Mounting tool for fan shaft seal

Abstract

The utility model belongs to the field of fan seal installation, and particularly relates to an installation tool for fan shaft seal, which comprises a guide sleeve, a shaft sleeve, a sealing sleeve, a sealing ring and a sealing ring, and is characterized in that the guide sleeve is seamlessly jointed with the fan shaft sleeve; the positioning bolt is used for guiding and positioning when the lower sealing shell of the fan is mounted; and the guide rod is used for guiding the upper sealing shell when the upper sealing shell and the lower sealing shell of the fan are closed. The installation tool is used in the fan shaft seal installation process, the safety risk is reduced, and meanwhile the installation time is shortened.

Description

Technical Field

[0001] The present application relates to the field of fan seal installation, and in particular to an installation tool for a fan shaft seal. Background Art

[0002] Fans can be classified in various ways according to different standards. Based on the direction of airflow, fans can be primarily categorized as centrifugal, axial, diagonal (mixed) and cross-flow. Shaft seals are primarily used in rotating equipment, such as centrifugal fans, where axial gas leakage must be prevented. Shaft sealing technology is particularly important in centrifugal fans, as these fans are widely used in industries that transport specialized gases, such as coal gas, waste recycling, and the chemical industry. These environments often exhibit certain explosive, corrosive, and flammable properties. Poor shaft seal performance can result in the loss of significant amounts of precious gas and can even pose environmental and safety risks due to gas leaks into the air. Therefore, selecting the appropriate shaft seal is crucial to ensuring safe and reliable fan operation.

[0003] Taking the high-temperature circulation fan in the smelting industry as an example, the key point for the smooth and efficient operation of the high-temperature circulation fan lies in the effectiveness of the shaft seal. The shaft seal is in the form of a floating ring seal + gas combination seal. This seal form is widely used in high, medium and low pressure fans because of its economic use, easy processing and low cost.

[0004] This high-temperature blower not only operates at around 280°C but also transports a medium of SO2, SO3, air, and fine catalyst powder, creating a harsh operating environment. This prevented the blower's shaft seal's floating ring from floating, causing the ring to frequently become stuck and seal failure, leading to large amounts of SO3 gas leaking from the blower's shaft seal. This not only created an environmental risk but also necessitated reduced production and shutdown for seal replacement. Each seal replacement took four hours, requiring production to be stopped and reduced, significantly impacting the operation. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, an embodiment of the present application intends to provide an installation tool for a fan shaft seal, which is used during the installation of the fan shaft seal to reduce safety risks and shorten installation time.

[0006] The technical solution disclosed in the embodiment of the present application is: an installation tool for a fan shaft seal, wherein the fan shaft seal includes a fan sleeve, an upper sealing shell, a lower sealing shell and a sealing ring, and the installation tool includes:

[0007] A guide sleeve, wherein the guide sleeve is seamlessly fitted with the fan shaft sleeve;

[0008] Positioning bolts, which are used to guide and position the lower sealing shell when it is installed;

[0009] The guide rod is used to guide the upper sealing shell when the upper sealing shell and the lower sealing shell are closed.

[0010] Furthermore, the embodiment of the present application discloses that the guide sleeve is a two-half structure.

[0011] Furthermore, an embodiment of the present application discloses that the guide sleeve is provided with a screw hole, and the screw hole is used to install a fixing bolt.

[0012] Furthermore, the embodiment of the present application discloses that the diameter of the positioning bolt is transitionally matched with the aperture of the lower sealing shell of the fan.

[0013] Compared with the prior art, 1. the guide sleeve, positioning bolt and guide rod in this application are simple to manufacture, easy to process and easy to implement; 2. The original maintenance and construction space for the fan is relatively small, and maintenance work must be carried out when the fan is shut down, but the temperature of the fan is still maintained at about 150 degrees. If you are not careful during the maintenance process, you will get burned, and the safety risk is relatively high. The use of this installation tool reduces the safety risk of personnel during installation; 3. The fan seal consists of 6 sealing rings and upper and lower sealing shells. The gap between the sealing ring and the shell is very small, less than 30um. When the upper and lower shells are closed, the gap between each sealing ring must be consistent, and the two halves of the sealing shell must be strictly ensured to be in a straight line to ensure that the 6 sealing rings enter the sealing shell groove. A slight deviation will cause the seal to The ring is damaged and scrapped. The use of this installation tool reduces the difficulty of seal installation and reduces the risk of damage during installation; 4. The fan shaft sleeve is designed to be relatively short, and there is a stop between the sealing shell and the casing. The sealing ring must be held on the shaft sleeve during seal installation, which forces the sealing shell to move outward only about 1CM. Sealant needs to be applied between the shaft seal shell and the casing to prevent smoke leakage. The application status of the sealant cannot be observed in the 1CM gap, and the relatively high temperature increases the difficulty of application, which makes it difficult to ensure the construction quality and easily causes secondary repairs. The use of this installation tool improves the construction quality and greatly shortens the installation time; 5. This installation tool is suitable for the seal installation of a variety of fans (mainly centrifugal fans). BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 : A schematic structural diagram of the installation tool of the utility model;

[0015] Figure 2 : A schematic structural diagram of a guide sleeve in the installation tool of the present invention;

[0016] In the figure: 1. Guide sleeve; 2. Positioning bolt; 3. Guide rod; 4. Fixing bolt; 5. Screw hole; 6. Fan shaft sleeve; 7. Lower sealing shell; 8. Upper sealing shell; 9. Sealing ring. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Example

[0018] like Figure 1 、 2 As shown, a mounting tool for a fan shaft seal, the fan shaft seal includes a fan shaft sleeve 6, an upper sealing shell 8, a lower sealing shell 7 and a sealing ring 9, and the mounting tool includes: a guide sleeve 1, the guide sleeve 1 is used to fit seamlessly with the fan shaft sleeve 6, the guide sleeve 1 is a two-half structure, the guide sleeve 1 is provided with a screw hole 5, the screw hole 5 is used to install a fixing bolt 4; a positioning bolt 2, the positioning bolt 2 is used to guide and position when installing the fan lower sealing shell 7; and a guide rod 3, the guide rod 3 is used to guide the upper sealing shell 8 when closing the upper sealing shell 8 and the lower sealing shell 7.

[0019] How to use this installation tool: When installing the lower sealing shell 7 of the fan, the positioning bolt 2 plays a guiding and positioning role. The diameter of the positioning bolt 2 transitions with the aperture of the lower sealing shell 7 of the fan. During installation, ensure that the fan sealing shell is concentric with the fan shaft. When closing the upper and lower sealing shells of the fan, the guide rod 3 guides the upper sealing shell 8 of the fan. It is only necessary to adjust the gap of the sealing ring 9 in the lower shell, and install and close the upper sealing shell 8 with the guide rod 3 as the reference surface against the guide rod 3. The guide sleeve 1 is a two-half structure, fixed with bolts. The outer diameter is consistent with the fan shaft sleeve 6, and the outer surface is polished. When the guide sleeve 1 moves outward to provide a distance for gluing and sealing, it fits seamlessly with the fan shaft sleeve to ensure that the sealing ring 9 in the sealing shell will not fall off, making gluing and sealing convenient.

[0020] Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A mounting tool for a fan shaft seal, the fan shaft seal comprising a fan shaft sleeve (6), an upper sealing shell (8), a lower sealing shell (7) and a sealing ring (9), characterized in that: The installation tool includes: A guide sleeve (1), wherein the guide sleeve (1) is seamlessly fitted to the fan shaft sleeve (6); A positioning bolt (2), the positioning bolt (2) is used to guide and position the lower sealing shell (7) when installing the lower sealing shell (7); A guide rod (3) is used to guide the upper sealing shell (8) when the upper sealing shell (8) and the lower sealing shell (7) are closed.

2. The installation tool for fan shaft seal according to claim 1, characterized in that: The guide sleeve (1) is a two-half structure.

3. The installation tool for fan shaft seal according to claim 1, characterized in that: The guide sleeve (1) is provided with a screw hole (5), and the screw hole (5) is used to install a fixing bolt (4).

4. The installation tool for fan shaft seal according to claim 1, characterized in that: The diameter of the positioning bolt (2) is transitionally matched with the hole diameter of the lower sealing shell (7).

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