CN212202590U

CN212202590U - Rotating shaft sealing device and ventilator using same

Info

Publication number: CN212202590U
Application number: CN202020853224.8U
Authority: CN
Inventors: 胡锦康
Original assignee: Foshan City Nanhai Jiuzhou Popula Fan Co Ltd
Current assignee: Foshan City Nanhai Jiuzhou Popula Fan Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-22
Anticipated expiration: 2030-05-20

Abstract

The utility model provides a rotation axis sealing device and use its ventilation blower, relate to the sealed technical field of fan, a rotation axis sealing device, including base and apron, the base includes the pedestal and connects the bottom plate, the inside of pedestal has sealed hole, sealed hole is equipped with the sealed filler that forms by rope and lubricating oil mixture, connect the terminal surface that the bottom plate set up at the pedestal, it has first shaft hole to connect the bottom plate, first shaft hole communicates to sealed hole, the pedestal is equipped with in its another terminal surface and toward the hem of rolling over outward along radial direction, the apron can be dismantled with the hem and be connected, the apron is equipped with the second shaft hole. The utility model provides a rotation axis sealing device compares with the sealing device of current other types, not only possesses good sealing performance, but also reduces the roughness's of axis of rotation requirement, maintains the maintenance, changes gland packing simple and conveniently.

Description

Rotating shaft sealing device and ventilator using same

Technical Field

The utility model relates to a technical field that the fan is sealed, especially a axis of rotation sealing device and use its ventilation blower.

Background

The usage of fan divides two kinds basically, one kind is the air blast (air supply), the other kind is induced air (induced draft or convulsions), in B formula, C formula, D formula driven single suction centrifugal fan, a round hole about 10mm bigger than the axis of rotation diameter need be opened to the fan backplate, be used for the axis of rotation to pass fan backplate installation impeller, the effect of reserving this 10mm clearance is when fan operation work, the axis of rotation can not take place the friction with the backplate, guarantee fan normal operating work, but there is an drawback, be exactly when the fan is operation work, the fan the inside has some gas to leak out from this 10mm clearance, it goes in the atmosphere to discharge. If the gas delivered by the fan contains smoke or harmful components, the leaked gas has influence on safety, so that the fan needs to be sealed.

The existing fan sealing method in the fan industry basically adds a round cake with the diameter being 1mm larger than that of a rotating shaft on the rear side plate of the fan for sealing, only the gap is reduced, the gas leakage is reduced as much as possible, and the complete sealing cannot be realized, so that the method is simplest and the cost is lowest. In the other method, an oil seal is adopted for sealing, but the method has the defects of complex work, troublesome installation, high cost and strict processing requirement and mainly shows that the requirement on the roughness of a shaft is strict and the precision of a bracket for installing the oil seal is high, because the shaft is in close contact with the oil seal, the oil seal is made of rubber materials, a rotating shaft is made of steel materials, if the roughness of the rotating shaft does not reach the roughness required by the oil seal, the rotating shaft is easy to abrade the oil seal and is not durable when rotating, and when the oil seal cannot be used after being abraded, an impeller needs to be detached from the rotating shaft, and then the oil seal can be replaced by a new oil seal, so that a fan needs to be frequently detached and the user is unnecessarily troubled.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect, the utility model aims to provide a low, easy dismounting's axis of rotation sealing device and use its ventilation blower to the rotating shaft roughness.

To achieve the purpose, the utility model adopts the following technical proposal: the utility model provides a rotation axis sealing device, includes base and apron, the base includes pedestal and connecting bottom plate, the inside of pedestal has sealed hole, sealed hole is equipped with the sealing filler who is formed by rope and lubricating oil mixture, connecting bottom plate sets up the terminal surface of pedestal, connecting bottom plate has first shaft hole, first shaft hole intercommunication to sealed hole, the pedestal is equipped with in its another terminal surface along the hem that turns over the book outward along radial direction, the apron with the connection can be dismantled to the hem, the apron is equipped with the second shaft hole.

Further, the aperture of the sealing hole is larger than that of the first shaft hole, and the aperture of the first shaft hole is the same as that of the second shaft hole.

Further, a thread fixing piece is arranged between the cover plate and the folded edge, and comprises a nut and a stud;

the hem is equipped with first connecting hole, the apron is equipped with the second connecting hole that corresponds with first connecting hole, the double-screw bolt is passed through behind first connecting hole and the second connecting hole with the nut is connected.

Further, the connecting bottom plate is provided with a plurality of third connecting holes.

Furthermore, the area of the folding edge projected to the connecting bottom plate along the axial direction is a projection area, and the third connecting hole is located on the outer side of the projection area.

Furthermore, the connecting bottom plate is square, the folded edge is circular, and the third connecting holes are formed in the corners of the connecting bottom plate.

A ventilator comprises a driving device, a fan volute and the rotating shaft sealing device;

the connecting bottom plate is fixed on the outer wall of the fan volute, the driving device is provided with a rotating shaft, and the rotating shaft sequentially penetrates through the second shaft hole, the sealing hole and the first shaft hole.

Further, a disassembly space for moving out the cover plate along the axial direction is formed between the rotating shaft sealing device and the driving device.

The utility model discloses in, to be filled by the sealing filler that rope and lubricating oil mixture formed extremely sealed hole makes sealing filler parcel axis of rotation to realize sealed effect, reduced the requirement to the roughness of rotating shaft surface, need not to reach the required smooth finish requirement of oil blanket, save a large amount of grinding time.

The cover plate covers the sealing hole, so that the sealing filler is effectively prevented from falling off, and the sealing performance of the rotating shaft sealing device is ensured. The base body is provided with the folded edge which is folded outwards along the radial direction, so that the contact area of the cover plate and the base body is enlarged, stress is dispersed, and the cover plate is prevented from being deformed to reduce the sealing effect. The hem with adopt detachable connected mode between the apron, easy dismounting conveniently opens sealed hole does benefit to the change sealed downthehole sealed filler.

The utility model provides an axis of rotation sealing device compares with the sealing device of current other types, not only possesses good sealing performance, but also reduces the roughness's of axis of rotation requirement, just the utility model discloses a rational in infrastructure, maintain maintenance, change sealing filler is simple and convenient.

Drawings

Fig. 1 is an exploded view of a rotary shaft sealing device according to the present invention;

fig. 2 is a schematic view of a rotary shaft sealing device according to the present invention projected in an axial direction;

fig. 3 is a schematic structural diagram of a ventilator according to the present invention;

fig. 4 is a schematic view of the disassembled cover plate of fig. 3.

Wherein: the fan comprises a base 1, a base body 11, a sealing hole 111, a sealing filler 112, a flange 113, a first connecting hole 114, a connecting bottom plate 12, a first shaft hole 121, a third connecting hole 122, a cover plate 2, a second shaft hole 21, a second connecting hole 22, a threaded fixing piece 3, a nut 31, a stud 32, a driving device 4, a rotating shaft 41, a fan volute 5, a projection area a and a disassembly space b.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 1-2, a rotating shaft sealing device comprises a base 1 and a cover plate 2, wherein the base 1 comprises a base body 11 and a connecting bottom plate 12, a sealing hole 111 is formed in the base body 11, and a sealing filler 112 formed by mixing a rope and lubricating oil is arranged in the sealing hole 111. Wherein, in the embodiment, the rope is preferably a butter rope, and the lubricating oil is preferably butter, is easy to purchase on the market and has low cost. The connecting bottom plate 12 is disposed on an end surface of the seat body 11, the connecting bottom plate 12 has a first shaft hole 121, the first shaft hole 121 is communicated with the sealing hole 111, a folded edge 113 that is folded outward along a radial direction is disposed on the other end surface of the seat body 11, the cover plate 2 is detachably connected to the folded edge 113, and the cover plate 2 has a second shaft hole 21. The first shaft hole 121 is used for allowing the rotating shaft 41 to penetrate through the rotating shaft sealing device, and the second shaft hole 21 is used for allowing the rotating shaft to penetrate through the rotating shaft sealing device.

The utility model discloses in, to be mixed by rope and lubricating oil and form the gland packing 112 fill extremely sealed hole 111 makes gland packing 112 parcel axis of rotation 41 to realize sealed effect, reduced the requirement to axis of rotation 41 roughness, need not to reach the required smooth finish requirement of installation oil blanket, save a large amount of grinding time.

The sealing hole 111 is covered by the cover plate 2, so that the sealing filler 112 is effectively prevented from falling off, and the sealing performance of the rotating shaft sealing device is ensured. The seat body 11 is provided with the folded edge 113 which is folded outwards along the radial direction, so that the contact area between the cover plate 2 and the seat body 11 is increased, stress is dispersed, and the cover plate 2 is prevented from being deformed to cause the reduction of the sealing effect. The folding edge 113 and the cover plate 2 are detachably connected, so that the sealing hole 111 is convenient to open, and the sealing filler 112 in the sealing hole 111 is convenient to replace.

The utility model provides a rotation axis sealing device compares with the sealing device of current other types, not only possesses good sealing performance, but also reduces the requirement of the roughness of rotation axis 41, just the utility model discloses a rational in infrastructure, maintain maintenance, change sealing filler 112 is simple and convenient.

Further, the diameter of the sealing hole 111 is larger than that of the first shaft hole 121, and the diameter of the first shaft hole 121 is the same as that of the second shaft hole 21. Specifically, referring to fig. 1 and 3, the connecting bottom plate 12 and the cover plate 2 are respectively disposed on two end surfaces of the seat body 11, so that the aperture of the sealing hole 111 is larger than the apertures of the first shaft hole 121 and the second shaft hole 21, and thus the sealing hole 111 has a space for filling the sealing filler 112, and the two ends of the sealing hole 111 have limiting baffles, so as to prevent the sealing filler 112 from falling off. In an embodiment of the present invention, when the rotating shaft sealing device is used for matching with the rotating shaft 41 with a diameter of 65mm, the aperture of the sealing hole 111 is 96mm, and the aperture of the first shaft hole 121 and the aperture of the second shaft hole 21 are both 66 mm.

Further, a threaded fixing member 3 is arranged between the cover plate 2 and the folded edge 113, and the threaded fixing member 3 comprises a nut 31 and a stud 32. The folding edge 113 is provided with a first connecting hole 114, the cover plate 2 is provided with a second connecting hole 22 corresponding to the first connecting hole 114, and the stud 32 penetrates through the first connecting hole 114 and the second connecting hole 22 and then is connected with the nut 31. Specifically, as shown in fig. 3, the cover plate 2 is detachably connected to the folded edge 113 through the threaded fastener 3, and the stud 32 is connected to the nut 31 after penetrating through the first connection hole 114 and the second connection hole 22, so that the cover plate 2 is conveniently disassembled and assembled, the sealing hole 111 is conveniently opened, and the sealing filler 112 inside the sealing hole 111 is conveniently replaced.

Further, the connection base plate 12 is provided with a plurality of third connection holes 122. By providing the plurality of third connection holes 122 in the connection base plate 12, a fixing member such as a pin or a screw can be inserted through the connection base plate 12, thereby achieving the mounting and fixing of the connection base plate 12.

Further, a region of the flange 113 projected to the connecting base plate 12 along the axial direction is a projected region a, and the third connecting hole 122 is located outside the projected region a. Specifically, as shown in fig. 2, when the folded edge 113 is projected along the axial direction, each of the third connecting holes 122 is not located in the projection area a of the folded edge 113, so that the structure is reasonable, the folded edge 113 is effectively prevented from obstructing the use of a screwdriver or a sleeve or other disassembling tools, and the connecting bottom plate 12 is convenient to mount and fix.

Further, the connecting bottom plate 12 is square, the folded edge 113 is circular, and the third connecting hole 122 is disposed at a corner of the connecting bottom plate 12. Specifically, as shown in fig. 2, the connecting base plate 12 is square, the folded edge 113 is circular, when the folded edge 113 projects along the axial direction when the connecting base plate 12 is used, the corner of the connecting base plate 12 is located outside the projection area a of the folded edge 113, and through the third connecting hole 122 is arranged at the corner of the connecting base plate 12, the third connecting hole 122 is effectively prevented from being arranged in the projection area a of the folded edge 113, so that the folded edge 113 is effectively prevented from blocking the use of tools such as a screwdriver, and the connecting base plate 12 is convenient to mount and fix, has a reasonable structure, and is favorable for dispersing stress.

Referring to fig. 3-4, the utility model also discloses a ventilator, including drive arrangement 4 and fan spiral case 5, still include a above-mentioned axis of rotation sealing device. The connecting bottom plate 12 is fixed on the outer wall of the fan volute 5, the driving device 4 has a rotating shaft 41, and the rotating shaft 41 sequentially passes through the second shaft hole 21, the sealing hole 111 and the first shaft hole 121. Specifically, referring to fig. 1 and 3, connection bottom plate 12 is fixed fan spiral case 5's outer wall is realized rotation axis sealing device fixes fan spiral case 5's outer wall has used foretell rotation axis sealing device, not only possesses good sealing performance, but also reduces the requirement of the roughness of axis of rotation 41, just the utility model discloses a rational in infrastructure, maintain maintenance, change gland packing 112 is simple and convenient.

Further, referring to fig. 3 and 4, a disassembly space b for the cover plate 2 to move out in the axial direction is provided between the rotating shaft sealing device and the driving device 4. In particular, the drive means 4 may be an electric motor. When the cover plate 2 is connected with the folded edge 113, a disassembly space b for the cover plate 2 to move out along the axial direction is formed between the rotating shaft sealing device and the driving device 4. As shown in fig. 4, when the sealing packing 112 needs to be replaced, the dismounting space b is provided, so that the cover plate 2 can be moved out backward along the axial direction, the sealing hole 111 can be opened, the sealing packing 112 can be replaced without dismounting the driving device 4, and the rotating shaft sealing device is convenient and fast.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. A rotary shaft seal assembly characterized by: including base and apron, the base includes pedestal and connecting bottom plate, the inside of pedestal has the sealed hole, the sealed hole is equipped with the sealing filler who forms by rope and lubricating oil mixture, connecting bottom plate sets up the terminal surface of pedestal, connecting bottom plate has first shaft hole, first shaft hole intercommunication to sealed hole, the pedestal is equipped with in its another terminal surface along the hem of turning over the book outward along radial direction, the apron with the connection can be dismantled to the hem, the apron is equipped with the second shaft hole.

2. A rotary shaft seal assembly as defined in claim 1 wherein: the aperture of the sealing hole is larger than that of the first shaft hole, and the aperture of the first shaft hole is the same as that of the second shaft hole.

3. A rotary shaft seal assembly as defined in claim 1 wherein: a threaded fixing piece is arranged between the cover plate and the folded edge and comprises a nut and a stud;

4. A rotary shaft seal assembly as defined in claim 1 wherein: the connecting bottom plate is provided with a plurality of third connecting holes.

5. The rotary shaft seal assembly according to claim 4 wherein: the area of the folded edge projected to the connecting bottom plate along the axial direction is a projection area, and the third connecting hole is positioned on the outer side of the projection area.

6. A rotary shaft seal assembly as defined in claim 5 wherein: the connecting bottom plate is square, the folded edge is circular, and the third connecting hole is formed in the corner of the connecting bottom plate.

7. A ventilator comprising a drive means and a fan volute, characterized in that: further comprising a rotary shaft seal assembly according to any one of claims 1 to 6;

8. A ventilator according to claim 7, wherein: and a disassembly space for moving the cover plate out along the axial direction is formed between the rotating shaft sealing device and the driving device.