Leakage-proof sealing assembly of ventilator

Abstract

The utility model belongs to the technical field of ventilator sealing, and relates to a ventilator leakproof sealing assembly which comprises a ventilator shell, a ventilator shaft, a sealing flange, a sealing gland, an inflation inlet and a sealing assembly, the sealing flange is detachably installed on the ventilator shell, and the sealing assembly is installed between the sealing flange and the ventilator shell. The sealing flange is provided with air inflation ports which are oppositely arranged, the two air inflation ports are communicated with the interior of the sealing flange, a sealing gland is detachably installed at the opening position of the sealing flange, a plurality of pressing plates abut against the outer surface of the sealing flange, the pressing plates are detachably installed on a ventilator shell, and screwed plugs are detachably installed on the air inflation ports. The gas seal and the packing seal are combined to form a multi-seal system, the multi-seal can effectively prevent the leakage risk caused by leakage failure of a single seal, the leakage problem caused by packing abrasion is delayed, and the seal service life is remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilator sealing, in particular to an anti-leakage sealing component for a ventilator. Background Art

[0002] In the field of industrial production and energy conversion, fans are key power and gas delivery equipment, and their stable operation is directly related to the efficiency and safety of the entire production system. Traditional fan sealing components widely use packing seal structures, especially packing seals as the mainstream form. This type of sealing method has the advantages of simple structure and low cost in the early stage, and is suitable for a variety of working conditions. However, as the fan runs for a long time, there will be continuous friction and wear between the packing and the rotating shaft.

[0003] Because the packing gradually wears out, a sealing gap is formed, which allows gas to bypass the sealing area and leak. Gas leakage not only reduces the operating efficiency of the fan and increases energy consumption, but may also pollute the production environment and even threaten the safe operation of the equipment. It can only be maintained regularly and the packing is replaced regularly, which is time-consuming and labor-intensive. Frequent disassembly and assembly may also cause additional mechanical damage to the fan shaft and sealing components, further shortening the service life of the equipment. Utility Model Content

[0004] In order to solve the technical problem that leakage is caused by gradual friction damage of existing fillers, the utility model provides a ventilator anti-leakage sealing component.

[0005] The technical solution of the utility model is achieved through the following scheme: a ventilator anti-leakage sealing component, including a ventilator casing, a ventilator shaft, a sealing flange, a sealing gland, an inflation port and a sealing component, the sealing flange is detachably mounted on the ventilator casing, a sealing component is installed between the sealing flange and the ventilator casing, the sealing flange is provided with inflation ports arranged opposite to each other, both of the inflation ports are connected to the inside of the sealing flange, a sealing gland is detachably mounted at the opening of the sealing flange, a plurality of pressure plates are abutted on the outer surface of the sealing flange, a plurality of pressure plates are detachably mounted on the ventilator casing, a wire plug is detachably mounted on the inflation port, and the end of the ventilator shaft is fitted with the sealing component.

[0006] Through the above technical scheme, a gas seal and a physical seal are formed by the sealing component and the inflation port to form a multiple sealing system, which effectively delays the leakage problem caused by packing wear and significantly improves the service life of the sealing component and the sealing life. The filled gas can provide a soft seal through gas pressure, reduce the direct stress on other components, and reduce the maintenance cost caused by frequent disassembly and replacement of seals. The inflatable seal is suitable for working conditions that require flexible adjustment of the sealing pressure, and can provide different sealing effects when the equipment is shut down and running.

[0007] Preferably, the sealing assembly comprises a sealing gasket, a plurality of carbon rings and a plurality of butter packings, wherein the plurality of carbon rings are detachably installed in the sealing flange, and the plurality of butter packings are located at the connection between the sealing flange and the sealing gland.

[0008] Preferably, the sealing gasket is installed between the sealing flange and the fan casing, and the carbon ring fits the end of the fan shaft.

[0009] Through the above technical solution, a multi-layer packing sealing structure is achieved by combining sealing gaskets, carbon rings and butter packing, which not only improves the reliability of the seal, but also enables other sealing layers to continue to provide effective sealing when a single sealing layer fails, greatly reducing the risk of leakage. The flexibility and adaptability of the butter packing enable it to effectively fill tiny gaps and ensure the integrity of the seal.

[0010] Preferably, the sealing flange comprises a first half flange and a second half flange, the second half flange is detachably mounted on the first half flange, the first half flange and the second half flange are both abutted against a plurality of pressure plates, and the fan shaft is located inside the first half flange and the second half flange.

[0011] Preferably, both the first half flange and the second half flange are provided with an inflation port, and the second half flange is provided with a wire cutting portion, which is detachably mounted on the first half flange by screws.

[0012] Preferably, a carbon ring groove is provided in the sealing flange, and the sealing gland protrusion is matched with the sealing flange protrusion groove.

[0013] Through the above technical solution, the split design is easy to install and maintain, which not only improves the flexibility of installation, but also facilitates the replacement of severely worn parts separately when necessary, reducing the cost and complexity of overall replacement. The pressure plate applies pressure to the sealing flange from the outside to ensure that it is stable and not loose, preventing leakage problems caused by vibration or impact.

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1. The utility model combines gas sealing and physical sealing formed by sealing components and inflation ports to form a multiple sealing system, which effectively delays the leakage problem caused by packing wear and significantly improves the service life of the sealing components and the sealing life. The filled gas can provide a soft seal through gas pressure, reduce direct stress on other components, and reduce maintenance costs caused by frequent disassembly and replacement of seals. The inflatable seal is suitable for working conditions that require flexible adjustment of the sealing pressure, and can provide different sealing effects when the equipment is shut down and running.

[0016] 2. By combining sealing gaskets, carbon rings and butter packing, a multi-layer packing sealing structure is achieved, which not only improves the reliability of the seal, but also enables other sealing layers to continue to provide effective sealing when a single sealing layer fails, greatly reducing the risk of leakage. The flexibility and adaptability of the butter packing enable it to effectively fill tiny gaps and ensure the integrity of the seal.

[0017] 3. The split design facilitates installation and maintenance, which not only improves the flexibility of installation, but also facilitates the replacement of severely worn parts separately when necessary, reducing the cost and complexity of overall replacement. The pressure plate applies pressure to the sealing flange from the outside to ensure that it is stable and not loose, preventing leakage problems caused by vibration or impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model from the main perspective;

[0020] Figure 3 It is a schematic diagram of the side cross-sectional structure of the sealing flange of the utility model;

[0021] Figure 4 This is a schematic diagram of the main view structure of the sealing flange of the utility model;

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the pressing plate of the utility model.

[0023] Explanation of the reference numerals: 1. Sealing flange; 11. First half flange; 12. Second half flange; 2. Sealing gland; 3. Inflation port; 4. Sealing assembly; 41. Sealing gasket; 42. Carbon ring; 43. Butter packing; 5. Pressure plate; 6. Thread plug. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. The present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] A ventilator anti-leakage sealing component, such as Figure 1-Figure 5As shown, it includes a fan casing, a fan shaft, a sealing flange 1, a sealing gland 2, an air charging port 3 and a sealing assembly 4. The sealing flange 1 is detachably mounted on the fan casing. A sealing assembly 4 is installed between the sealing flange 1 and the fan casing. The sealing flange 1 is provided with oppositely arranged air charging ports 3. Both air charging ports 3 are connected to the inside of the sealing flange 1. A sealing gland 2 is detachably mounted at the opening of the sealing flange 1. A plurality of pressure plates 5 are abutted against the outer surface of the sealing flange 1. The plurality of pressure plates 5 are detachably mounted on the fan casing. The pressure plates 5 are L-shaped plates connected to the fan casing by bolts. The bolts for fixing the pressure plates 5 are welded to the fan casing. On the fan casing, a threaded plug 6 is detachably installed on the inflation port 3. The inflation port 3 is closed with the threaded plug 6 when not in use to complete a thorough seal. The multiple sealing systems can make comprehensive use of their respective advantages to effectively prevent the risk of leakage when a single seal fails. The inflation port 3 on the sealing flange 1 can be connected to the inflation equipment at the user's site. By adjusting the pressure of the injected gas to form a pressure difference, the leaked gas can be pushed out of the seal to prevent the gas from entering the seal, thereby improving the sealing and anti-leakage capability. The end of the fan shaft is fitted with the sealing component 4, and the sealing flange 1 and part of the sealing component 4 are tightly fitted with the fan to complete the sealing.

[0027] The sealing assembly 4 includes a sealing gasket 41, a plurality of carbon rings 42 and a plurality of butter packings 43. The sealing gasket 41 is installed between the sealing flange 1 and the fan casing. A gasket groove is provided at the position where the sealing flange 1 contacts the fan casing for placing the sealing gasket 41. The sealing gasket 41 also has the function of high temperature resistance and can adapt to high temperature working conditions to perform the first layer of sealing. The carbon ring 42 fits the end of the fan shaft. The plurality of carbon rings 42 are detachably installed in the sealing flange 1. The plurality of butter packings 43 are located at the connection between the sealing flange 1 and the sealing gland 2. There are two carbon rings 42 and two butter packings 43. A carbon ring 42 groove is provided in the sealing flange 1. The carbon ring 42 has good wear resistance, high temperature stability and thermal conductivity, etc., can adapt to high temperature working conditions, and effectively extend the sealing The sealing life is prolonged, the protruding part of the sealing gland 2 is matched with the convex groove of the sealing flange 1, the sealing gland 2 is convex, and a plurality of corresponding threaded holes are opened on the sealing flange 1 and the sealing gland 2, which are locked by bolts. The butter packing 43 has good flexibility and adaptability, can effectively fill the sealing gap and prevent gas leakage. At the same time, this packing rope is soaked in lubricants such as butter, has a good self-lubricating effect, and can effectively reduce the wear between the shaft. In addition, the butter packing 43 is suitable for a certain range of high temperature environments. In the case of multiple seals, it can effectively prevent the leakage risk when a single seal fails. The adjustability of the gas seal makes it unnecessary to immediately stop the machine for replacement when a slight leakage occurs, but the sealing effect can be restored by a simple inflation operation.

[0028] The sealing flange 1 includes a first half flange 11 and a second half flange 12. The second half flange 12 can be detachably mounted on the first half flange 11. The fan shaft is located inside the first half flange 11 and the second half flange 12. A wire cutting portion is provided on the second half flange 12. The wire cutting portion can be detachably mounted on the first half flange 11 by screws. The second half flange 12 is in a state where the two corners of the semicircle are cut at right angles, and a screw groove is provided on the first half flange 11. The screw passes through the wire cutting portion of the second half flange 12 to complete the assembly with the first half flange 11. The first half flange 11 and the second half flange 12 are both provided with an inflation port 3. The injected gas can provide a soft seal through the gas pressure to reduce the direct stress on other components. When the inflation port 3 is not needed, , screw on the screw plug 6 to complete the seal, prevent dust, moisture and other impurities from entering the seal, and keep the sealed environment clean and dry. The first half flange 11 and the second half flange 12 are both abutted against a plurality of pressure plates 5. The second half flange 12 and the first half flange 11 can be disassembled by removing the screws, so that worn parts can be easily replaced when necessary, without the need to replace the entire seal, thereby reducing maintenance costs. The number of pressure plates 5 is preferably four, which are symmetrically arranged. The symmetrical distribution makes the pressure plate 5 more stable, and the pressure plate 5 can further enhance the stability and reliability of the sealing structure. The pressure plate 5 can ensure close contact between the flanges, prevent loosening or leakage due to vibration, impact and other factors, and improve the overall performance and service life of the sealing device.

[0029] Working principle: This sealing device is assembled on the fan. At this time, the sealing gasket 41 between the sealing flange 1 and the contact position of the fan housing becomes the first step to prevent gas leakage. When the gas enters the seal, it first contacts the carbon ring 42 to perform the second step of leakage prevention. The plug 6 is further opened to inflate and seal through the plug 6. At this time, a gas soft seal is formed in the sealing device. The leaked gas that wants to enter the sealing device is pushed out by the pressure difference. The butter packing 43 is further used for final caulking to complete multiple sealing.

[0030] When the sealing assembly 4 needs to be replaced, the replacement and maintenance can be easily completed by simply removing the screws of the wire cutting portion of the second half flange 12.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A ventilator anti-leakage sealing assembly, characterized in that: The invention comprises a fan casing, a fan shaft, a sealing flange (1), a sealing gland (2), an air filling port (3) and a sealing assembly (4), wherein the sealing flange (1) is detachably mounted on the fan casing, a sealing assembly (4) is mounted between the sealing flange (1) and the fan casing, the sealing flange (1) is provided with oppositely arranged air filling ports (3), the two air filling ports (3) are both connected to the inside of the sealing flange (1), a sealing gland (2) is detachably mounted at the opening of the sealing flange (1), a plurality of pressure plates (5) are abutted against the outer surface of the sealing flange (1), the plurality of pressure plates (5) are detachably mounted on the fan casing, a thread plug (6) is detachably mounted on the air filling port (3), and the end of the fan shaft is fitted with the sealing assembly (4).

2. A ventilator anti-leakage sealing assembly according to claim 1, characterized in that: The sealing assembly (4) comprises a sealing gasket (41), a plurality of carbon rings (42) and a plurality of butter packings (43), wherein the plurality of carbon rings (42) are detachably mounted in the sealing flange (1), and the plurality of butter packings (43) are located at the connection between the sealing flange (1) and the sealing gland (2).

3. A ventilator anti-leakage sealing assembly according to claim 2, characterized in that: The sealing gasket (41) is installed between the sealing flange (1) and the fan housing, and the carbon ring (42) fits the end of the fan shaft.

4. The ventilator anti-leakage sealing assembly according to claim 1, characterized in that: The sealing flange (1) comprises a first half flange (11) and a second half flange (12); the second half flange (12) is detachably mounted on the first half flange (11); the first half flange (11) and the second half flange (12) are both abutted against a plurality of pressure plates (5); and the fan shaft is located inside the first half flange (11) and the second half flange (12).

5. A ventilator anti-leakage sealing assembly according to claim 4, characterized in that: The first half flange (11) and the second half flange (12) are both provided with an air filling port (3), and the second half flange (12) is provided with a wire cutting portion, which is detachably mounted on the first half flange (11) by means of screws.

6. A ventilator anti-leakage sealing assembly according to claim 2, characterized in that: A carbon ring groove is provided in the sealing flange (1), and the protruding portion of the sealing gland (2) is adapted to fit the protruding groove of the sealing flange (1).

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