Sealing device for a clean air fan

Abstract

The utility model belongs to the technical field of purification fan, concretely relates to purification fan installation sealing device, including purification box, the lower end fixedly connected with support frame of purification box, the right -hand member fixedly connected with installation cylinder of purification box, the inside bearing of installation cylinder is installed with rotating shaft, rotating shaft and purification box swing joint, the outside of rotating shaft is connected with sealing ring through screw thread, sealing ring and purification box swing joint, the inside right -hand side wall fixed connection of purification box has limit stop. The scheme can carry out sealing treatment between rotating shaft and purification box through the effect of sealing ring, can carry out rotary position limiting to sealing ring under the effect of limit stop, guarantees the installation stability of sealing ring well, and under the effect of spring one etc. structure, can make extrusion ring always contact with sealing ring, guarantees good extrusion sealing effect, improves the sealing characteristic to rotating shaft.

Description

Technical Field

[0001] This utility model belongs to the field of purification fan technology, specifically relating to a sealing device for purifying fan installation. Background Technology

[0002] Air purification fans are key pieces of equipment that integrate air transport and pollutant purification, and are widely used in cleanrooms, laboratories, industrial waste gas treatment, medical environments, and other fields. Their core function is to achieve directional airflow and efficient pollutant removal through a combination of fan power and filtration / purification technology.

[0003] A purification fan is disclosed in the utility model patent with patent authorization announcement number CN219367864U. The fan consists of: a shell, an air inlet pipe and an air outlet pipe inside the shell, a fan and a first activated carbon filter device between the air inlet pipe and the air outlet pipe, the first activated carbon filter device including a shell, an activated carbon filter plate and a cover plate, one end of the shell being connected to the air inlet pipe, and the other end of the shell being connected to the fan through a first connecting pipe, a sliding groove being provided inside the shell, a slider being provided on the activated carbon filter plate, the slider slidingly engaging with the sliding groove, a threaded hole being provided on the shell, a through hole being provided on the cover plate, the cover plate being fixedly connected to the shell through the through hole, the threaded hole and bolts, and a rotating door being provided on the shell.

[0004] However, existing purification fans also have certain defects. The shaft seals of existing purification fans often leak gas during operation, which poses a significant risk to on-site inspection personnel. Summary of the Invention

[0005] The purpose of this utility model is to provide a sealing device for the installation of a purification fan, which solves the problem that gas leakage often occurs at the shaft seal of the existing purification fan during operation, and the gas leakage poses a significant risk to on-site inspection personnel.

[0006] To achieve the above objectives, this utility model provides a sealing device for installing a purification fan, including a purification box. A support frame is fixedly connected to the lower end of the purification box, and an installation cylinder is fixedly connected to the right end of the purification box. A rotating shaft is mounted inside the installation cylinder via a bearing, and the rotating shaft is movably connected to the purification box. A sealing ring is threadedly connected to the outer side of the rotating shaft, and the sealing ring is movably connected to the purification box. A limit block is fixedly connected to the inner right side wall of the purification box, and the limit block contacts the sealing ring. An installation piece is fixedly connected to the right end of the purification box and inside the installation cylinder. A compression ring is slidably connected to the inner wall of the purification box, and the compression ring contacts the sealing ring. A servo motor is fixedly mounted to the right end of the installation cylinder, and the output shaft of the servo motor is welded to the rotating shaft. An oil injection mechanism is provided at the right end of the purification box.

[0007] The principle of this utility model is as follows: through the action of the sealing ring, the rotating shaft and the purification box can be sealed. Under the action of the limiting block, the sealing ring can be rotated and limited to ensure good installation stability of the sealing ring. Under the action of the spring and other structures, the extrusion ring can always be in contact with the sealing ring to ensure good extrusion sealing effect and improve the sealing characteristics of the rotating shaft. By pulling the end column upwards, the traction line moves, which in turn moves the sealing block. Under the action of the support plate, the second spring deforms, eventually causing the sealing block to detach from the flow pipe. Under the action of the flow pipe, the lubricating oil can flow, eventually allowing the lubricating oil to contact the bearing inside the mounting cylinder, lubricating the bearing and ensuring good bearing rotation.

[0008] The beneficial effects of this utility model are as follows: This solution can seal the rotating shaft and the purification box through the sealing ring. Under the action of the limiting block, the sealing ring can be rotated and limited to ensure good installation stability. Under the action of the spring and other structures, the compression ring can always be in contact with the sealing ring to ensure a good compression sealing effect and improve the sealing characteristics of the rotating shaft. By pulling the end column upward, the traction line is moved, causing the sealing block to move, which in turn causes the spring to deform. Under the action of the flow pipe, the lubricating oil can be circulated and used, and finally the lubricating oil comes into contact with the bearing inside the mounting cylinder to effectively lubricate the bearing and ensure good rotation effect.

[0009] Furthermore, four limiting blocks are provided, and the four limiting blocks are arranged in a circular array on the purification box. By setting the limiting blocks, the sealing ring can be rotated and limited.

[0010] Furthermore, a spring is welded to the left end of the mounting plate, and the other end of the spring is fixedly connected to the compression ring. The compression ring can be tightened by the spring.

[0011] Furthermore, two support frames are provided, which are symmetrically distributed on the purification box. The support frames can be used to support the purification box.

[0012] Furthermore, the oil injection mechanism includes an oil storage box. The oil storage box is fixedly connected to the right end of the purification box. A flow pipe is fixedly connected to the inner wall of the oil storage box. An end post is in contact with the upper end of the oil storage box. A traction line is fixedly connected to the lower side of the end post. The traction line is slidably connected to the oil storage box. A blocking block is fixedly connected to the lower end of the traction line. The blocking block is in contact with the oil storage box and the flow pipe. A support plate is fixedly connected to the inner wall of the oil storage box. Through the action of the end post, traction line, and other structures, the blocking block can be pulled away from the flow pipe, thereby allowing the lubricating oil to circulate and be used.

[0013] Furthermore, the flow pipe contacts the mounting cylinder and the bearing inside the mounting cylinder. The flow pipe allows for the guidance of lubricating oil.

[0014] Furthermore, a second spring is welded to the lower end of the support plate, and the other end of the second spring is fixedly connected to the sealing block. The sealing block can be tightened by the second spring. Attached Figure Description

[0015] Figure 1 This is a perspective view of the overall structure of the sealing device for the purification fan according to an embodiment of the present invention; Figure 2 A sealing device is installed on the purification fan in an embodiment of the present invention. Figure 1 A bottom view; Figure 3 A sealing device is installed on the purification fan in an embodiment of the present invention. Figure 1 Side view; Figure 4 A sealing device is installed on the purification fan in an embodiment of the present invention. Figure 3 A schematic diagram of the structure excluding the mounting cylinder; Figure 5 A sealing device is installed on the purification fan in an embodiment of the present invention. Figure 4 Enlarged view of the mounting plate; Figure 6 A sealing device is installed on the purification fan in an embodiment of the present invention. Figure 1 A front sectional view; Figure 7 A sealing device is installed on the purification fan in an embodiment of the present invention. Figure 6 Enlarged view of the oil injection mechanism.

[0016] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings of the instruction manual include: 1. Purification box; 2. Support frame; 3. Mounting cylinder; 4. Rotating shaft; 5. Sealing ring; 6. Limiting block; 7. Mounting piece; 8. Compression ring; 9. Spring 1; 10. Servo motor; 11. Oil injection mechanism; 110. Oil storage box; 111. Flow pipe; 112. End post; 113. Traction line; 114. Sealing block; 115. Support piece; 116. Spring 2. Detailed Implementation

[0017] The implementation examples are basically as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, this embodiment provides a sealing device for installing a purification fan, including a purification box 1. A support frame 2 is fixedly connected to the lower end of the purification box 1. An installation cylinder 3 is fixedly connected to the right end of the purification box 1. A rotating shaft 4 is installed inside the installation cylinder 3 via a bearing. The rotating shaft 4 is movably connected to the purification box 1. A sealing ring 5 is threadedly connected to the outer side of the rotating shaft 4. The sealing ring 5 is movably connected to the purification box 1. A limit block 6 is fixedly connected to the inner right side wall of the purification box 1. The limit block 6 contacts the sealing ring 5. An installation piece 7 is fixedly connected to the right end of the purification box 1 and inside the installation cylinder 3. A compression ring 8 is slidably connected to the inner wall of the purification box 1. The compression ring 8 contacts the sealing ring 5. A servo motor 10 is fixedly installed at the right end of the installation cylinder 3. The output shaft of the servo motor 10 is welded to the rotating shaft 4.

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, there are two support frames 2, which are symmetrically distributed on the purification box 1. The support frames 2 can support the purification box 1. There are four limiting blocks 6, which are arranged in a ring array on the purification box 1. The limiting blocks 6 can limit the rotation of the sealing ring 5. A spring 9 is welded to the left end of the mounting plate 7. The other end of the spring 9 is fixedly connected to the compression ring 8. The spring 9 can be used to tighten the compression ring 8.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, an oil injection mechanism 11 is provided at the right end of the purification box 1. The oil injection mechanism 11 includes an oil storage box 110. The oil storage box 110 is fixedly connected to the right end of the purification box 1. A flow pipe 111 is fixedly connected to the inner wall of the oil storage box 110. An end post 112 is in contact with the upper end of the oil storage box 110. A traction line 113 is fixedly connected to the lower side of the end post 112. The traction line 113 is slidably connected to the oil storage box 110. A blocking block 114 is fixedly connected to the lower end of the traction line 113. The blocking block 114 is in contact with the oil storage box 110 and the flow pipe 111. A support plate 115 is fixedly connected to the inner wall of the oil storage box 110. Through the action of the end post 112, the traction line 113 and other structures, the blocking block 114 can be pulled away from the flow pipe 111, thereby allowing the lubricating oil to circulate and be used.

[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5, Figure 6 , Figure 7 As shown, the flow pipe 111 is in contact with the mounting cylinder 3 and the bearing inside the mounting cylinder 3. The flow pipe 111 can guide the lubricating oil. The lower end of the support plate 115 is welded with a second spring 116. The other end of the second spring 116 is fixedly connected to the sealing block 114. The sealing block 114 can be tightened by the second spring 116.

[0021] The specific implementation process of this utility model is as follows: Through the action of the sealing ring 5, the rotating shaft 4 and the purification box 1 can be sealed. Under the action of the limiting block 6, the sealing ring 5 can be rotated and limited to ensure good installation stability of the sealing ring 5. Under the action of the spring 9 and other structures, the extrusion ring 8 can always be in contact with the sealing ring 5 to ensure good extrusion sealing effect and improve the sealing characteristics of the rotating shaft 4. By pulling the end post 112 upward, the traction line 113 is moved, which in turn moves the sealing block 114. Under the action of the support plate 115, the spring 116 deforms, and the sealing block 114 is finally disengaged from the flow pipe 111. Under the action of the flow pipe 111, the lubricating oil can flow, and finally the lubricating oil comes into contact with the bearing inside the mounting cylinder 3 to lubricate the bearing and ensure good rotation of the bearing.

[0022] This solution uses the sealing ring 5 to seal the space between the rotating shaft 4 and the purification box 1. The limiting block 6 limits the rotation of the sealing ring 5, ensuring its stable installation. The spring 9 and other structures ensure the compression ring 8 remains in contact with the sealing ring 5, guaranteeing a good compression seal and improving the sealing characteristics of the rotating shaft 4. Pulling the end post 112 upwards moves the traction line 113, causing the sealing block 114 to move. This, in turn, causes the spring 116 to deform, allowing lubricating oil to circulate through the flow pipe 111. Ultimately, the lubricating oil contacts the bearing inside the mounting cylinder 3, effectively lubricating it and ensuring good rotational performance.

[0023] It should be noted in advance that, in this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A sealing device for a purification fan, including a purification chamber, characterized in that: A support frame is fixedly connected to the lower end of the purification box, and an installation cylinder is fixedly connected to the right end of the purification box. A rotating shaft is installed inside the installation cylinder via a bearing, and the rotating shaft is movably connected to the purification box. A sealing ring is threadedly connected to the outer side of the rotating shaft, and the sealing ring is movably connected to the purification box. A limit block is fixedly connected to the inner right side wall of the purification box, and the limit block contacts the sealing ring. An installation piece is fixedly connected to the right end of the purification box and inside the installation cylinder. A compression ring is slidably connected to the inner wall of the purification box, and the compression ring contacts the sealing ring. A servo motor is fixedly installed at the right end of the installation cylinder, and the output shaft of the servo motor is welded to the rotating shaft. An oil injection mechanism is provided at the right end of the purification box.

2. The sealing device for the purification fan according to claim 1, characterized in that: Four limiting blocks are provided, and the four limiting blocks are arranged in a circular array on the purification box.

3. The sealing device for the purification fan according to claim 1, characterized in that: A spring is welded to the left end of the mounting plate, and the other end of the spring is fixedly connected to the compression ring.

4. The sealing device for the purification fan according to claim 1, characterized in that: There are two support frames, which are symmetrically distributed on the purification box.

5. The sealing device for the purification fan according to claim 1, characterized in that: The oil injection mechanism includes an oil storage box. The oil storage box is fixedly connected to the right end of the purification box. A flow pipe is fixedly connected to the inner wall of the oil storage box. An end post is in contact with the upper end of the oil storage box. A traction line is fixedly connected to the lower side of the end post. The traction line is slidably connected to the oil storage box. A blocking block is fixedly connected to the lower end of the traction line. The blocking block is in contact with the oil storage box and the flow pipe. A support plate is fixedly connected to the inner wall of the oil storage box.

6. The sealing device for the purification fan according to claim 5, characterized in that: The flow tube is in contact with the mounting cylinder, and the flow tube is in contact with the bearing inside the mounting cylinder.

7. The sealing device for the purification fan according to claim 5, characterized in that: A second spring is welded to the lower end of the support plate, and the other end of the second spring is fixedly connected to the sealing block.

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