CN219282413U

CN219282413U - Oil seal device for rotating shaft of diaphragm compressor

Info

Publication number: CN219282413U
Application number: CN202223117206.1U
Authority: CN
Inventors: 陈元坤; 陈建; 张进
Original assignee: Chengdu Yiming Machinery Equipment Manufacturing Co ltd
Current assignee: Chengdu Yiming Machinery Equipment Manufacturing Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-06-30
Anticipated expiration: 2032-11-23

Abstract

The utility model discloses an oil seal device for a rotating shaft of a diaphragm compressor, which comprises a cover body, and a detachable stationary ring seat and a movable ring seat which are adjacently arranged in the cover body, wherein the cover body can be penetrated by the rotating shaft and is arranged on a bearing box from one end of a bearing, the movable ring seat can rotate along with the rotating shaft, the stationary ring seat comprises a detachable stationary ring, and the movable ring seat comprises a detachable movable ring; the static ring seat and the moving ring seat can bear continuous axial opposite acting force after being installed, so that the moving ring and the static ring are in contact with each other and form a seal in the circumferential opposite sliding; the oil seal device also comprises at least 1 lubricating oil mist spraying port which is arranged on the cover body and communicated with the inner cavity of the cover body. The sealing effect is enhanced, the abrasion of the rotating shaft is reduced, the installation and the disassembly are convenient, and the fittings are easy to replace due to the damage; the lubricating oil can be supplemented or updated periodically through the lubricating oil mist spraying inlet and the oil return hole, so that the effective operation of equipment is effectively maintained, and the failure rate is reduced.

Description

Oil seal device for rotating shaft of diaphragm compressor

Technical Field

The utility model belongs to the technical field of gas compression equipment, and particularly relates to an oil seal device for a rotating shaft of a diaphragm compressor.

Background

The oil seals are classified according to the rotation linear speed of the shaft, and the oil seals can be classified into low-speed oil seals and high-speed oil seals. The oil seals are classified according to the pressure which can be borne by the oil seals, and can be classified into normal pressure type oil seals and pressure type (more than 0.05 Mpa) oil seals. The oil seals are classified according to the structure and sealing principle of the oil seals and can be classified into standard oil seals and power reflux type oil seals. In addition, the materials of the oil seal assembly are classified into a framework type oil seal and a non-framework type oil seal; there are spring type oil seals and no spring type oil seals.

The oil film has fluid lubrication characteristics due to the oil film between the oil seal and the shaft which is controlled by the cutting edge of the oil seal. Under the action of the surface tension of the liquid, the rigidity of the oil film just enables the oil film and the air contact end to form a crescent surface, so that the leakage of a working medium is prevented, and the sealing of the rotating shaft is realized. The sealing capability of the oil seal depends on the thickness of the oil film of the sealing surface, and the thickness is too large, so that the oil seal leaks. When the thickness is too small, dry friction can occur, oil seals and shafts are worn, and oil films are not arranged between the sealing lips and the shafts, so that heat and wear are easy to occur.

The oil seal is generally divided into a monomer type and an assembled type, wherein the assembled type is that a framework and lip materials can be freely combined, and the oil seal is generally used for special oil seals. The sealing function, the characteristics, the structure type, the working state, the sealing mechanism and the like of the oil seal can be divided into various forms and different names, but conventionally, a rotary shaft lip seal ring is called an oil seal, and sealing elements for static sealing and dynamic sealing are called sealing elements.

The diaphragm compressor is mainly composed of a motor, a base, a crank case, a crankshaft connecting rod movement mechanism, a cylinder body part, an oil gas pipeline, an electric control system and related accessories. The power is mainly transmitted to a transmission system through a motor, the transmission system comprises a rotating shaft, and the transmission system is very necessary for protecting the bearing lubrication of the rotating shaft by oil seal and is suitable for the working environment and the working mode of the diaphragm compressor.

Disclosure of Invention

The purpose of the utility model is that: the oil seal device for the diaphragm compressor rotating shaft is provided for strengthening the oil seal effect of the diaphragm compressor rotating shaft, and has the characteristics of simple assembly, long service life and easy maintenance.

In order to solve the problems, the technical scheme of the utility model is as follows:

the oil seal device for the rotating shaft of the diaphragm compressor comprises a cover body, and a detachable stationary ring seat and a detachable moving ring seat which are adjacently arranged in the cover body, wherein the cover body can be penetrated by the rotating shaft and is arranged on a bearing box from one end of a bearing, the moving ring seat can rotate along with the rotating shaft, the stationary ring seat comprises a detachable stationary ring, and the moving ring seat comprises a detachable moving ring; the static ring seat and the moving ring seat can bear continuous axial opposite acting force after being installed, so that the moving ring and the static ring are in contact with each other and form a seal in the circumferential opposite sliding; the oil seal device also comprises at least 1 lubricating oil mist spraying port which is arranged on the cover body and communicated with the inner cavity of the cover body.

The utility model discloses an oil seal device for a rotating shaft of a diaphragm compressor, wherein a static ring mounting groove for mounting a static ring is formed in one side of a static ring seat facing a dynamic ring seat, and a dynamic ring mounting groove for mounting a dynamic ring is formed in one side of the dynamic ring seat facing the static ring seat.

The utility model relates to an oil seal device for a rotating shaft of a diaphragm compressor, which further comprises an annular rubber seal ring, wherein a seal ring mounting groove for mounting the annular rubber seal ring is formed in the inner side of a movable ring seat.

The oil seal device for the rotating shaft of the diaphragm compressor further comprises a spigot disc detachably arranged in the cover body, wherein the spigot disc is positioned on one side of the stationary ring seat, which is opposite to the movable ring seat, and is not in contact with the stationary ring seat.

The oil seal device for the rotating shaft of the diaphragm compressor is characterized in that 1 lubricating oil mist spraying inlet is radially arranged at the upper end of a cover body, and the lubricating oil mist spraying inlet is communicated with an inner cavity of the cover body from a spigot disc and a static ring seat.

According to the oil seal device for the rotating shaft of the diaphragm compressor, the annular balance seat is arranged on one side, facing away from the static ring seat, of the movable ring seat, and the annular balance seat can be detachably arranged on the rotating shaft.

The oil seal device for the rotating shaft of the diaphragm compressor is provided with 1 or more through balancing seat screw holes along the radial direction of the annular balancing seat, and the through balancing seat screw holes are used for fixing the annular balancing seat on the rotating shaft.

According to the oil seal device for the rotating shaft of the diaphragm compressor, 2-5 positioning blocks are uniformly distributed on the outer annular surface of the annular balance seat, the annular balance seat can be fixed on the cover body when the positioning blocks are assembled, and the positioning blocks are removed from the annular balance seat and the cover body after the assembly is completed.

According to the oil seal device for the rotating shaft of the diaphragm compressor, 1-3 oil return holes are formed in one side, away from the movable ring seat, of the lower end of the stationary ring seat, and the oil return holes are communicated with the stationary ring mounting groove.

According to the oil sealing device for the rotating shaft of the diaphragm compressor, the annular balance seat and the movable ring seat can be detachably connected and fixed.

The oil seal device for the rotating shaft of the diaphragm compressor has the following advantages:

by arranging the movable ring seat to be matched with the movable ring and the static ring seat to be matched with the static ring, the sealing effect is enhanced, meanwhile, the abrasion of the rotating shaft is reduced, the assembly and the disassembly are convenient, and the accessory is easy to replace due to the damage; by arranging the lubricating oil mist spraying inlet and matching with the corresponding oil return holes, atomized lubricating oil can be sprayed, and the lubricating oil can be periodically supplemented or updated so as to effectively maintain the effective operation of equipment and reduce the failure rate. The whole device also has the advantages of simple assembly, long service life and easy maintenance.

Drawings

FIG. 1 is a schematic view of an oil seal device for a rotary shaft of a diaphragm compressor according to the present utility model;

FIG. 2 is a schematic diagram of a second embodiment of an oil seal for a rotary shaft of a diaphragm compressor according to the present utility model;

FIG. 3 is a schematic view of an oil seal for a rotary shaft of a diaphragm compressor according to the present utility model;

fig. 4 is a schematic view of an oil seal device for a rotary shaft of a diaphragm compressor according to the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present technology will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The oil seal device for the rotating shaft of the diaphragm compressor comprises a cover body 1, and a detachable stationary ring seat 2 and a detachable moving ring seat 3 which are adjacently arranged in the cover body 1, wherein the cover body 1 can be penetrated by a rotating shaft 7 and is arranged on a bearing box 9 from one end of a bearing 8, the moving ring seat 3 can rotate along with the rotating shaft 7, the stationary ring seat 2 comprises a detachable stationary ring 21, and the moving ring seat 3 comprises a detachable moving ring 31; the stationary ring seat 2 and the movable ring seat 3 can be subjected to continuous axial opposite acting force after being installed, so that the movable ring 31 and the stationary ring 21 are in contact with each other and form a seal in the circumferential opposite sliding; the oil seal device also comprises at least 1 lubricating oil mist spraying port 11 which is arranged on the cover body 1 and is communicated with the inner cavity of the cover body 1. Through the lubricating oil mist spraying inlet 11, lubricating oil can be sprayed into the inner cavity of the cover body 1 in a spraying mode, and meanwhile, the atomized lubricating oil directly covers the bearing 8 to lubricate the bearing 8. The spraying of the lubricating oil into the lubricating oil mist spraying opening 11 is performed intermittently, not continuously, so that the purpose of timely supplementing the lubricating oil or renewing the lubricating oil can be achieved. Further, an oil return hole (not shown) corresponding to the lubricating oil mist inlet 11 is provided at the bottom of the bearing housing, so that the lubricating oil can be updated through the oil return hole.

Further, the stationary ring seat 2 is provided with a stationary ring mounting groove 22 for mounting the stationary ring 21 on the side facing the movable ring seat 3, and the movable ring seat 3 is provided with a movable ring mounting groove 33 for mounting the movable ring 31 on the side facing the stationary ring seat 2. In some embodiments, as shown in the figures, the stationary ring mounting groove 22 and the moving ring mounting groove 33 form an annular step shape, and the outer diameter of the stationary ring mounting groove 22 is larger than the outer diameter of the moving ring mounting groove 33, so that the stationary ring seat 2 and the moving ring seat 3 can be conveniently mounted at respective mounting positions, and the running state is more stable. As can be seen from the figure, the static ring seat 2 is also provided with the axial static ring seat mounting holes 23 uniformly distributed in the circumferential direction, preferably 3-6 static ring seat mounting holes 23 are provided, and the static ring seat mounting holes are axially fixed on the cover body 1 through screws 34; of course, other existing manners, such as a snap connection, may be adopted for the connection and fixation between the stationary ring seat 2 and the cover body 1.

The opposite surfaces of the movable ring 31 and the stationary ring 21 are sealing surfaces, and the two sealing surfaces rub against each other during the relative circumferential rotation, and the sealing effect can be ensured during the friction.

Further, the oil seal device further comprises an annular rubber seal ring 32, and a seal ring mounting groove 34 for mounting the annular rubber seal ring 32 is formed in the inner side of the movable ring seat 3. Of course, the sealing ring can also be made of many existing materials, including polytetrafluoroethylene or graphite. The rubber sealing ring 32 has the advantages that the rubber sealing ring 32 is clamped in the sealing ring mounting groove 34, after the movable ring seat 3 is sleeved into the bearing 7, the rubber sealing ring 32 forms effective sealing on the surface of the bearing 7 through annular tension, and the rubber sealing ring 32 also achieves effective sealing in the sealing ring mounting groove 34 through elastic interference fit. Meanwhile, the rubber sealing ring 32 is matched with the sealing ring mounting groove 34, and the rubber sealing ring 32 is more convenient and quicker to replace in maintenance.

Further, the oil seal device further comprises a spigot disc 4 detachably arranged in the cover body, and the spigot disc 4 is positioned on one side of the stationary ring seat 2, which is opposite to the movable ring seat 3, and is not in contact with the stationary ring seat 2. The inner diameter of the spigot disc 4 is larger than that of the rotating shaft 7, an axial gap of 0.1-0.3mm is reserved between the spigot disc 4 and the bearing 8, and the gap is reserved for the bearing 8, so that the bearing is prevented from being blocked, the shaft does not have a channeling amount, and the current amount of the motor can be increased. The spigot plate 4 also has the function of being capable of propping against the bearing 8, so that the large amount of scurrying of the bearing 8 is avoided.

Further, the oil seal device for the rotating shaft of the diaphragm compressor is provided with 1 lubricating oil mist spraying inlet 11 in the radial direction at the upper end of the cover body 1, and the lubricating oil mist spraying inlet 11 is communicated with the inner cavity of the cover body from the gap disc 4 and the static ring seat 2.

Furthermore, the oil sealing device for the rotating shaft of the diaphragm compressor is further provided with an annular balance seat 5 at one side of the movable ring seat 3, which is away from the static ring seat 2, and the annular balance seat 5 can be detachably arranged on the rotating shaft 7.

Further, in the oil seal device for a rotary shaft of a diaphragm compressor, 1 or more through-type balance seat screw holes 51 are provided in the radial direction of the annular balance seat 5, for fixing the annular balance seat 5 to the rotary shaft 7, and further, the balance seat screw holes 51 of the annular balance seat 5 cannot be covered by the cover body 1.

Furthermore, 2-5 positioning blocks 6 are uniformly distributed on the outer annular surface of the annular balance seat 5 by the oil sealing device for the rotating shaft of the diaphragm compressor, the annular balance seat 5 can be fixed on the cover body 1 when the positioning blocks 6 are assembled, and the positioning blocks 6 are removed from the annular balance seat 5 and the cover body 1 after the assembly is completed. The positioning block is mainly used for determining the installation position of the annular balance seat 5 when the oil seal device is installed.

Further, the oil sealing device for the rotating shaft of the diaphragm compressor is provided with a plurality of oil return holes 22 on the static ring seat 2. The return hole 22 serves to return the oil accumulated at the lower ends of the movable ring 31 and the stationary ring 21 to the bearing housing. The probability of lubricating oil leakage is reduced.

More preferably, the oil sealing device for the rotating shaft of the diaphragm compressor is characterized in that 1-3 oil return holes 22 are formed in the lower end of the static ring seat 2, and the oil return holes are communicated with the static ring mounting groove.

In some exemplary embodiments, 2-5 compression springs 33 which are uniformly arranged in the compression ring direction are arranged on the side, facing the movable ring seat 3, of the annular balance seat 5 of the oil seal device for the rotating shaft of the diaphragm compressor, and two ends of each compression spring 33 are respectively in contact with the movable ring seat 3 and the annular balance seat 5 and are in a compressed state, so that the movable ring seat 3 is subjected to continuous axial pressure, and the movable ring seat 3 tends to be close, and further effective sealing between the movable ring 31 and the stationary ring 21 is facilitated. Meanwhile, the compression spring 33 is introduced, so that the oil seal device can have a certain assembly allowance, can adapt to the movement amount of the rotating shaft 7, and is convenient for assembly operation.

Further, the annular balance seat 5 and the movable ring seat 3 can be detachably connected and fixed, as can be seen in the figure, the annular balance seat 5 and the movable ring seat 3 are connected by the connecting pin 52, other connection modes can be applied to the connection, and the annular balance seat 5 is fixed on the rotating shaft 7, so that the movable ring seat 3 can rotate along with the rotating shaft 7 through the transmission of the annular balance seat 5.

The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. An oil seal device for a rotating shaft of a diaphragm compressor is characterized in that: the rotary ring seat can rotate along with the rotating shaft, the stationary ring seat comprises a detachable stationary ring, and the rotary ring seat comprises a detachable rotary ring; the static ring seat and the moving ring seat can bear continuous axial opposite acting force after being installed, so that the moving ring and the static ring are in contact with each other and form a seal in the circumferential opposite sliding; the oil seal device also comprises at least 1 lubricating oil mist spraying port which is arranged on the cover body and communicated with the inner cavity of the cover body.

2. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 1, wherein: the static ring seat is provided with a static ring installation groove for installing a static ring on one side facing the dynamic ring seat, and the dynamic ring seat is provided with a dynamic ring installation groove for installing a dynamic ring on one side facing the static ring seat.

3. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 1, wherein: the oil seal device further comprises an annular rubber sealing ring, and a sealing ring mounting groove for mounting the annular rubber sealing ring is formed in the inner side of the movable ring seat.

4. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 2, wherein: the movable ring seat is characterized by further comprising a spigot disc detachably arranged in the cover body, wherein the spigot disc is positioned on one side of the movable ring seat, which is opposite to the movable ring seat, and is not contacted with the movable ring seat.

5. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 4, wherein: the upper end of the cover body is radially provided with 1 lubricating oil mist spraying inlet which is communicated with the inner cavity of the cover body from the gap disc and the static ring seat.

6. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 2, wherein: an annular balance seat is arranged on one side of the movable ring seat, which is opposite to the static ring seat, and the annular balance seat can be detachably arranged on the rotating shaft.

7. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 6, wherein: and 1 or more through balance seat screw holes are formed along the radial direction of the annular balance seat and are used for fixing the annular balance seat on the rotating shaft.

8. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 7, wherein: 2-5 positioning blocks are uniformly distributed on the outer annular surface of the annular balance seat, the annular balance seat can be fixed on the cover body when the positioning blocks are assembled, and the positioning blocks are removed from the annular balance seat and the cover body after the assembly is completed.

9. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 2, wherein: 1-3 oil return holes are formed in one side, away from the movable ring seat, of the lower end of the stationary ring seat, and the oil return holes are communicated with the stationary ring mounting groove.

10. The oil seal device for a rotary shaft of a diaphragm compressor according to claim 7, wherein: the annular balance seat and the movable ring seat can be detachably connected and fixed.