CN215110501U

CN215110501U - Composite felt packing sealing device

Info

Publication number: CN215110501U
Application number: CN202121375518.5U
Authority: CN
Inventors: 辛庚嘉; 朱晓; 李长旺; 张连岗
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-10
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a composite felt packing sealing device, including sealing body and axle diameter, the middle part of sealing body has been seted up the shaft hole, and the inside in shaft hole is equipped with the axle diameter, and the junction fixedly connected with broach seal and two felt seals of shaft hole and axle diameter, and the sealed inboard of two felts has all seted up the sealed draw-in groove of felt, and four outside backward flow holes and four inboard oil return holes have been seted up to the bottom in shaft hole, and the inboard fixedly connected with of sealing body is located the epitaxial water conservancy diversion folded plate in shaft hole, the utility model relates to a composite felt packing sealing device has promoted the sealed life-span and the sealing performance of felt packing; the comprehensive performance of the felt packing seal is promoted to be improved, the phenomena of oil leakage and oil throwing are avoided, and the field environmental protection problem is effectively avoided; the design is a combined type, the advantages of comb tooth sealing and felt packing sealing are integrated, and the sealing adaptability of the equipment and the continuous effectiveness under dynamic operation are effectively ensured.

Description

Composite felt packing sealing device

Technical Field

The utility model relates to a sealing device technical field specifically is a compound felt packing sealing device.

Background

The felt stuffing sealing device is widely applied to machines such as motors, gear boxes and the like at low speed, normal temperature and normal pressure and is used for sealing grease and lubricating oil. The felt seal is also adapted to be dust tight.

When the felt seal is used for liquid seal in the currently widely applied fan bearing box, speed reducer transmission box and the like, the higher the viscosity of a medium is, the better the sealing effect is, and the felt seal effect is poor for liquids with lower viscosity such as kerosene. The felt seal is typically used at a temperature not exceeding 90 c and the pressure of use is typically one atmosphere. The felt sealing can work normally at a high speed of 20 m/s under the conditions of high shaft hardness, good surface luminosity and sufficient lubrication by using high-quality fine felts.

The existing felt packing is mainly a casting part in design, and the sealing performance of the felt packing is ensured according to one or two layers of felt sealing ring packing. In the actual application, there is the malleation in the sealed cavity, and the sealed oil seepage of different degrees, the oil throwing phenomenon appear after the operation for a period of time of felt, and felt filler is excessive when serious, has certain hidden danger, and dust, the greasy dirt after the clearance decompression of outside etc. can the accelerated degradation, and the persistence of its sealed effect is relatively poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a compound felt filler sealing device to the solution is proposed in the above-mentioned background art in the in-service use, has the malleation in the sealed cavity, the different degrees oil impregnate appears after the sealed operation of felt a period, gets rid of the oil phenomenon, and felt filler is excessive when serious, has certain hidden danger, and dust in the outside, greasy dirt etc. after the clearance decompression can accelerated degradation, the relatively poor problem of continuation of its sealed effect.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a compound felt packing sealing device, includes sealed body and footpath, the shaft hole has been seted up at the middle part of sealed body, the inside in shaft hole is equipped with the footpath, the shaft hole is sealed with two felts with the junction fixedly connected with broach of footpath sealed, two sealed draw-in groove of felt has all been seted up to the sealed inboard of felt, four outside backward flow holes and four inboard oil gallery have been seted up to the bottom in shaft hole, the inboard fixedly connected with of sealed body is located the epitaxial water conservancy diversion folded plate in shaft hole, the oily water conservancy diversion hole of collection has been seted up to the bottom of sealed body and water conservancy diversion folded plate junction, just it communicates with each other with four outside backward flow holes and four inboard oil galleries to collect oily water conservancy diversion hole, the epitaxy of sealed body is fixed to be provided with installation positioning slot, the sealed body's sealed fixedly connected with sealed positioning support board of epitaxy.

As an optimal technical scheme of the utility model, four outside backward flow hole all is located between the broach is sealed and adjacent felt is sealed, four inboard oil gallery all is located between two felt seals.

As an optimal technical scheme of the utility model, two the felt filler is all installed to the inside of felt seal slot.

As an optimal technical scheme of the utility model, the fixed surface in axle footpath is connected with two axle footpath baffling boards, two the axle footpath baffling board is located two felts respectively between sealed and the inboard of water conservancy diversion folded plate.

As an optimal technical scheme of the utility model, two the camber angle of shaft diameter baffling board is 50 ~ 70 degrees.

As an optimal technical scheme of the utility model, the inclination in collection oil water conservancy diversion hole 7 is 25 ~ 40 degrees.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the composite felt packing sealing device effectively uses the sealing performance of the comb tooth seal and the felt packing, effectively solves the problem that peripheral felts are degraded due to the influence of dust and oil stains by the aid of the comb tooth seal, effectively avoids the conditions of oil throwing and splashing during variable-speed operation, and comprehensively improves the practical sealing performance;

2. the inclination angle of the shaft diameter baffle plate is arranged, an oil collecting hole, a shaft seal baffling baffle plate and the like are added, the continuous effectiveness of felt sealing is optimized, redundant oil liquid is ensured to flow back in time, the pressure coordination of each sealing cavity is ensured, and the matching performance of the sealing and the shaft diameter matching is ensured;

3. the sealing service life of the felt is prolonged, and the application and performance of the felt packing sealing are further expanded and improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the sealing body of the present invention.

In the figure: 1. a seal body; 2. installing a positioning clamping groove; 3. sealing with felt; 4. a diversion folded plate; 5. an outer side return hole; 6. an inner oil return hole; 7. an oil collecting diversion hole; 8. sealing the comb teeth; 9. sealing and positioning the supporting plate; 10. the clamping groove is sealed by felt; 11. a shaft hole; 12. the diameter of the shaft; 13. and (4) a shaft diameter baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the utility model provides a composite felt packing sealing device, which comprises a sealing body 1 and an axle diameter 12, wherein the middle part of the sealing body 1 is provided with an axle hole 11, the inside of the axle hole 11 is provided with the axle diameter 12, the axle diameter 12 is the axle diameter body assembled by the sealing device and ensuring sealing, the connection part of the axle hole 11 and the axle diameter 12 is fixedly connected with a comb seal 8 and two felt seals 3, the comb seal 8 and the two felt seals 3 are arranged from outside to inside in sequence, the comb seal 8 is used for strengthening sealing performance, ensuring that the felt seals 3 are not influenced by dust, avoiding oil mist throwing phenomenon in variable speed operation of the axle diameter 12, ensuring the effectiveness of integral sealing under the condition of initial operation and play of the axle diameter 12, ensuring the accuracy of the comb seal 8 to be matched with the felt seals 3, and being provided with two or more felt seal bulges, ensuring the sealing efficacy of the axle diameter 12, the inner sides of two felt seals 3 are respectively provided with a felt seal clamping groove 10, the felt seal clamping grooves 10 are used for installing felt packing seals, the bottom of an axle hole 11 is provided with four outer side return holes 5 and four inner side oil return holes 6, the four outer side return holes 5 are used for collecting and returning leaked oil between the felt seals 3 and comb seals 8, the number of the inner side oil return holes 6 is determined according to the felt seal embedding design, the four inner side oil return holes 6 are used for collecting and returning pressure-reduced leaked oil between two felt seals 3, the inner side of a seal body 1 is fixedly connected with a flow guide folded plate 4 positioned on the extension of the axle hole 11, the flow guide folded plate 4 is used for ensuring the flow guide of returned lubricating oil and reducing the interference of the oil return due to the positive pressure of a cavity, the bottom of the joint of the seal body 1 and the flow guide folded plate 4 is provided with an oil collecting flow guide hole 7, and the oil collecting flow guide hole 7 is communicated with the four outer side return holes 5 and the four inner side oil return holes 6, collect oil water conservancy diversion hole 7 and be arranged in the backward flow of the oil of collection in outside backward flow hole 5 and the inboard oil return hole 6, and direct water conservancy diversion to the bearing box in, be used for reuse, sealed body 1's epitaxy is fixed and is provided with installation positioning slot 2, installation positioning slot 2 guarantees that this sealing device fixes on the bearing box body that will seal up, inlay the dress design, ensure the installation stable, sealed body 1's epitaxy fixedly connected with seals the location backup pad 9, guarantee sealed body 1 epitaxy and horizontal location, ensure with the horizontal uniformity of diameter of axle 12.

Preferably, four outer side return holes 5 are located between the comb seals 8 and the adjacent felt seals 3, four inner side return holes 6 are located between the two felt seals 3, the four outer side return holes 5 are circumferentially arranged, the four outer side return holes 5 are used for collecting and returning leaked oil between the felt seals 3 and the comb seals 8, the number of the inner side return holes 6 is determined according to the embedded design of the felt seals 3, and the four inner side return holes 6 are circumferentially arranged and used for collecting and returning pressure-reduced leaked oil between the two felt seals 3.

Preferably, felt stuffing is installed inside the two felt sealing clamping grooves 10, and the sealing performance is improved by filling the felt stuffing.

Preferably, the surface of the shaft diameter 12 is fixedly connected with two shaft diameter baffle plates 13, the two shaft diameter baffle plates 13 are respectively positioned between the two felt seals 3 and on the inner side of the diversion folded plate 4, and the shaft diameter baffle plates 13 with the shaft diameters 12 integrated are arranged in front of each felt seal 3 to prevent certain oil from splashing.

Preferably, the camber angle of the two axial-diameter baffle plates 13 is 50-70 degrees, the camber angle of the axial-diameter baffle plates 13 is 50-70 degrees, and the oil splashing can be effectively prevented due to the reasonable design of the angle.

Preferably, the inclination angle of the oil collecting diversion hole 7 is 25-40 degrees, so that smooth backflow is ensured.

When in specific use, the utility model relates to a composite felt packing sealing device, the shaft diameter 12 is the shaft diameter body which is assembled by the sealing device and ensures sealing, the sealing body 1 is arranged on the shaft diameter 12, the extension of the sealing body 1 is fixedly provided with an installation positioning clamping groove 2, the installation positioning clamping groove 2 ensures that the sealing device is fixed on a bearing box body to be sealed, the embedding design ensures stable installation, the extension of the sealing body 1 is fixedly connected with a sealing positioning supporting plate 9, the extension and horizontal positioning of the sealing body 1 are ensured, the horizontal consistency with the shaft diameter 12 is ensured, the sealing body 1 is additionally provided with a comb tooth seal 8, dust prevention and splash prevention, oil collection design and inclination angle are realized, the sealing performance is optimized, the comb tooth seal 8 is used for strengthening the sealing performance, the felt seal 3 is ensured not to be influenced by dust, the variable speed operation of the shaft diameter 12 is avoided, the oil mist is thrown away phenomenon, the validity of the whole seal is ensured under the condition of the initial operation and play of the shaft diameter 12, ensuring the fit of the precision performance of the comb tooth seal 8 and the felt seal 3, being provided with two or more felt seal bulges to ensure the sealing effect of the felt seal with the shaft diameter 12, a felt seal clamping groove 10 used for installing felt packing seal, four outer side return holes 5 are circumferentially arranged on the seal body 1, the four outer side return holes 5 are used for collecting and returning leaked oil between the felt seal 3 and the comb tooth seal 8, the number of the inner side return holes 6 is determined according to the embedded design of the felt seal 3, the four inner side return holes 6 are circumferentially arranged on the seal body 1 and used for collecting and returning decompressed leaked oil between the two felt seals 3, an oil collecting diversion hole 7 is used for returning oil collected in the outer side return holes 5 and the inner side return holes 6, the inclination angle of the oil collecting diversion hole 7 is 25-40 degrees and is directly diverted into the bearing box for recycling, a diversion folded plate 4 of the seal body 1 is used for ensuring the diversion of returned lubricating oil, the interference of positive pressure of the cavity on oil backflow is reduced, the two shaft diameter baffle plates 13 on the shaft diameter 12 are respectively positioned between the two felt seals 3 and on the inner sides of the diversion folded plates 4, the shaft diameter baffle plates 13 with the shaft diameters 12 integrated are arranged in front of each felt seal 3 to prevent certain oil from splashing, and the camber angle of the two shaft diameter baffle plates 13 is 50-70 degrees.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A composite felt wad sealing device comprises a sealing body (1) and a shaft diameter (12), and is characterized in that: the middle part of the sealing body (1) is provided with a shaft hole (11), the inside of the shaft hole (11) is provided with a shaft diameter (12), the joint of the shaft hole (11) and the shaft diameter (12) is fixedly connected with a comb seal (8) and two felt seals (3), two felt seals (3) are provided with felt seal clamping grooves (10) on the inner sides, four outer side return holes (5) and four inner side return holes (6) are provided on the bottom of the shaft hole (11), the inner side of the sealing body (1) is fixedly connected with a diversion folded plate (4) located on the extension of the shaft hole (11), an oil collection diversion hole (7) is provided on the bottom of the joint of the sealing body (1) and the diversion folded plate (4), the oil collection diversion hole (7) is communicated with the four outer side return holes (5) and the four inner side return holes (6), and an installation and positioning clamping groove (2) is fixedly arranged on the extension of the sealing body (1), the extension of the sealing body (1) is fixedly connected with a sealing positioning support plate (9).

2. A composite felt-wad sealing device according to claim 1, wherein: the four outer side oil return holes (5) are located between the comb seals (8) and the adjacent felt seals (3), and the four inner side oil return holes (6) are located between the two felt seals (3).

3. A composite felt-wad sealing device according to claim 1, wherein: felt fillers are arranged in the two felt sealing clamping grooves (10).

4. A composite felt-wad sealing device according to claim 1, wherein: the surface of the shaft diameter (12) is fixedly connected with two shaft diameter baffle plates (13), and the two shaft diameter baffle plates (13) are respectively positioned between the two felt seals (3) and on the inner side of the diversion folded plate (4).

5. A composite felt-wad sealing device according to claim 4, wherein: the camber angle of the two axial-radial baffle plates (13) is 50-70 degrees.

6. A composite felt-wad sealing device according to claim 1, wherein: the inclination angle of the oil collecting diversion hole (7) is 25-40 degrees.