CN212563761U - Bearing box oil-resistant device - Google Patents
Bearing box oil-resistant device Download PDFInfo
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- CN212563761U CN212563761U CN202021131899.8U CN202021131899U CN212563761U CN 212563761 U CN212563761 U CN 212563761U CN 202021131899 U CN202021131899 U CN 202021131899U CN 212563761 U CN212563761 U CN 212563761U
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Abstract
An oil stopper of a bearing box comprises a rotary sealing ring, a static sealing ring and an O-shaped sealing ring, wherein the rotary sealing ring and the static sealing ring are connected into a whole by the O-shaped sealing ring arranged in an O-shaped groove of the rotary sealing ring and the O-shaped groove of the static sealing ring; the rotary sealing ring is sleeved on the shaft, and a bearing gland is sleeved on the outer circle of the static sealing ring. When the device works, the lubricating oil flowing into the pumping groove is thrown out by utilizing the centrifugal force generated when the rotary sealing ring rotates at a high speed, so that the lubricating oil outside the pumping groove forms certain pressure, the lubricating oil is prevented from entering a gap between the rotary sealing ring and the static sealing ring, the lubricating oil is prevented from leaking, and the sealing property is better. The shallow slot is processed at the stepped outer circle of the rotary sealing ring, the shallow slot reduces the contact area between the outer circle of the rotary sealing ring, which is positioned at the inner side of the static sealing ring, and the groove wall of the end face groove of the static sealing ring, so that the friction surface is reduced, meanwhile, the shallow slot forms a liquid containing groove, and lubricating oil in the shallow slot forms pressure due to high-speed rotation of a shaft, so that the lubricating oil is.
Description
Technical Field
The utility model belongs to the technical field of it is sealed, in particular to bearing box oil interceptor.
Background
The centrifugal pump is a universal machine widely applied to industrial enterprises in paper making, chemical industry, food, pharmacy, grain and oil processing, rubber, cotton spinning, printing and dyeing, wood industry and other industries, the pump is a machine for converting mechanical energy of a prime motor into energy for pumping liquid, the prime motor drives an impeller to rotate through a pump shaft to apply work to the liquid so as to increase the energy of the liquid, and therefore the required amount of liquid is conveyed to a required high place or a required place through a water absorption pool and an overflowing part of the pump. The prime mover is connected to the pump head through a coupling, the pump shaft in the suspension assembly rotates at high speed in a bearing housing, which contains lubricating oil to lubricate the front and rear bearings. In order to ensure that an oil splash ring is arranged on a lubricating pump shaft to stir lubricating oil in a bearing box, labyrinth grooves are formed in inner holes of bearing covers on the front and the rear of an original bearing box to prevent the lubricating oil from leaking, and once the structure is slightly deviated in manufacturing, the lubricating oil leaks in the bearing box easily and pollutes the environment due to later-stage abrasion. Too little lubricating oil in the bearing box causes bearing damage, and potential safety hazards are brought to the pump.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that prior art exists, the utility model provides a bearing box oil interceptor, this bearing box oil interceptor static sealing ring and axle contactless, the nothing wearing and tearing when equipment operation, the clearance is little, can guarantee that the bearing box inner medium does not have the leakage and prevents debris entering bearing box, can avoid sealed inefficacy and increase equipment reliability.
In order to realize the purpose, the technical scheme of the utility model is that:
an oil stopper of a bearing box comprises a rotary sealing ring, a static sealing ring and an O-shaped sealing ring, wherein the rotary sealing ring and the static sealing ring are connected into a whole by the O-shaped sealing ring arranged in an O-shaped groove of the rotary sealing ring and the O-shaped groove of the static sealing ring; the rotary sealing ring is sleeved on the shaft, and a bearing gland is sleeved on the outer circle of the static sealing ring.
The inner hole of the rotary sealing ring is in a step shape, two O-shaped grooves are processed on the step-shaped inner hole, one O-shaped groove is positioned at the hole wall of the inner hole matched with the shaft, the other O-shaped groove is positioned at the hole wall of the inner hole matched with the static sealing ring, an O-shaped sealing ring is arranged in the O-shaped groove on the hole wall of the inner hole matched with the shaft in an interference fit mode, and the rotary sealing ring is driven to rotate together with the shaft by the interference of the O-shaped sealing ring; an O-shaped groove processed on an inner hole of the rotary sealing ring matched with the static sealing ring and a corresponding O-shaped groove on the static sealing ring are internally provided with O-shaped sealing rings, and the static sealing ring and the rotary sealing ring are connected into a whole by the O-shaped sealing rings.
The outer circle of the rotary sealing ring is evenly processed with pumping grooves along the circumferential direction of the end face of the static sealing ring, and when the device works, lubricating oil flowing into the pumping grooves is thrown out by utilizing centrifugal force generated when the rotary sealing ring rotates at a high speed, so that the lubricating oil outside the pumping grooves forms certain pressure, the lubricating oil is prevented from entering a gap between the rotary sealing ring and the static sealing ring, and the lubricating oil is prevented from leaking.
The processing of static sealing ring excircle has two recesses, one of them recess is O type groove, O shape sealing washer is installed to O type inslot, O shape sealing washer interference is installed and is guaranteed static sealing ring location between the O type groove of static sealing ring and bearing gland hole, another recess is the dismantlement groove, it has a set of blowhole to dismantle inslot processing, the blowhole communicates with each other with the recess on the static sealing ring hole, the lubricating oil of revealing from static sealing ring hole flows through the blowhole, arrange the assigned position, prevent the polluted environment.
A terminal surface groove is processed on the terminal surface of one side, close to the rotary sealing ring, of the static sealing ring, an O-shaped groove corresponding to the O-shaped groove of the rotary sealing ring is processed on the groove wall of the terminal surface groove, and the two O-shaped grooves form a complete space and are provided with O-shaped sealing rings. A chamfer is processed at the inlet of the O-shaped groove at the groove of the end face of the static sealing ring so as to ensure that the step at the inlet of the O-shaped groove can cross the bottom of the O-shaped sealing ring during assembly and the O-shaped sealing ring is not damaged.
The shallow slot is processed at the stepped excircle of the rotary sealing ring, when the rotary sealing ring and the static sealing ring are assembled into a whole, the shallow slot is inserted into the inner side of the end face groove of the static sealing ring and is matched with the wall of the end face groove, the contact area between the excircle of the rotary sealing ring, which is positioned at the inner side of the static sealing ring, of the rotary sealing ring and the wall of the end face groove of the static sealing ring is reduced by the shallow slot, so that the friction surface is reduced, meanwhile, the shallow slot forms a liquid containing slot.
The utility model has the advantages that:
(1) the utility model discloses rotary seal ring and static sealing ring of bearing box oil interceptor connect into a whole by installing in the O shape sealing washer that two sealing rings correspond O type inslot, install in O shape sealing washer in the middle of rotary seal ring and the static sealing ring and float and can be in inslot axial displacement when equipment operates, can eliminate the main shaft and can not throw off easily again for the influence that the axial float of bearing box brought, safe and reliable more, this O shape sealing washer still can block the lubricating oil of revealing from rotary seal ring and static sealing ring clearance, a thing is multi-purpose.
(2) Compared with mechanical seal, the valve has the advantages of low price, compact structure, simple structure and no leakage.
(3) The oil stopper is in non-contact sealing, the rotary sealing ring and the static sealing ring are not in contact, the abrasion loss is small, and the service life is long.
(4) Because the rotary sealing ring is not in contact with the static sealing ring, the rotary sealing ring can be suitable for high-speed rotating equipment and has wide application range.
(5) When the device works, the lubricating oil flowing into the pumping groove is thrown out by utilizing the centrifugal force generated when the rotary sealing ring rotates at a high speed, so that the lubricating oil outside the pumping groove forms certain pressure, the lubricating oil is prevented from entering a gap between the rotary sealing ring and the static sealing ring, the lubricating oil is prevented from leaking, and the sealing property is better.
(6) The interior blowdown hole that sets up of dismantlement groove even there is a small amount of lubricating oil to reveal, also can be discharged the assigned position by the blowdown hole outflow, prevents the polluted environment.
(7) The shallow groove is machined in the outer circle of the shaft diameter of the middle and small end of the stepped outer circle of the rotary sealing ring, the contact area between the outer circle of the rotary sealing ring, which is positioned on the inner side of the static sealing ring, and the groove wall of the groove on the end face of the static sealing ring is reduced by the shallow groove, so that the friction surface is reduced, meanwhile, the shallow groove forms a liquid containing groove, and lubricating oil in the shallow groove forms pressure due to high-.
Drawings
FIG. 1 is an assembly diagram of the oil stopper of the bearing housing of the present invention;
fig. 2 is a side view of the stationary seal ring of the present invention;
fig. 3 is a side view of the rotary seal ring of the present invention;
FIG. 4 is a schematic view of the assembly of the oil stopper and the bearing gland of the bearing housing of the present invention;
1. a stationary seal ring; 2. an O-shaped sealing ring; 3. a pumping tank; 4. rotating the seal ring; 5. a sewage draining hole; 6. a bearing gland; 7. shallow grooves.
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.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 4, the oil stopper of the bearing box comprises a rotary sealing ring 4, a static sealing ring 1 and an O-shaped sealing ring 2, wherein the rotary sealing ring 4 and the static sealing ring 1 are connected into a whole by the O-shaped sealing ring 2 arranged in the O-shaped groove of the rotary sealing ring 4 and the O-shaped groove of the static sealing ring 1; the rotary sealing ring 4 is sleeved on the shaft, and the bearing gland 6 is sleeved on the outer circle of the static sealing ring 1.
An inner hole of the rotary sealing ring 4 is in a step shape, two O-shaped grooves are processed on the step-shaped inner hole, one O-shaped groove is positioned at the hole wall of the inner hole matched with the shaft, the other O-shaped groove is positioned at the hole wall of the inner hole matched with the static sealing ring 1, an O-shaped sealing ring 2 is arranged in the O-shaped groove on the hole wall of the inner hole matched with the shaft in an interference fit mode, and the rotary sealing ring 4 is driven to rotate together with the shaft by interference of the O-shaped sealing ring 2 when; an O-shaped groove processed on an inner hole of the rotary sealing ring 4 matched with the static sealing ring 1 and a corresponding O-shaped groove on the static sealing ring 1 are internally provided with O-shaped sealing rings 2, and the static sealing ring 1 and the rotary sealing ring 4 are connected into a whole by the O-shaped sealing rings 2.
The peripheral of the outer circle of the rotary sealing ring 4 is evenly processed with the pumping grooves 3 along the peripheral direction of the end face of the static sealing ring 1, when the equipment works, the lubricating oil flowing into the pumping grooves 3 is thrown out by utilizing the centrifugal force generated when the rotary sealing ring 4 rotates at a high speed, so that the lubricating oil outside the pumping grooves 3 forms certain pressure, the lubricating oil is prevented from entering the gap between the rotary sealing ring 4 and the static sealing ring 1, and the lubricating oil is prevented from leaking.
The processing of 1 excircle of static sealing ring has two recesses, one of them recess is O type groove, O shape sealing washer is installed to O type inslot, the interference of O shape sealing washer is installed and is guaranteed static sealing ring 1 location between the O type groove of static sealing ring 1 and the 6 holes of bearing gland, another recess is the dismantlement groove, it has a set of blowhole 5 to dismantle the inslot processing, the recess on blowhole 5 and the 1 hole of static sealing ring communicates with each other, the lubricating oil that exposes from the 1 hole of static sealing ring flows through blowhole 5, arrange the assigned position, prevent the polluted environment.
A terminal surface groove is processed on the end surface of one side, close to the rotary sealing ring 4, of the static sealing ring 1, an O-shaped groove corresponding to the O-shaped groove of the rotary sealing ring 4 is processed on the groove wall of the terminal surface groove, the two O-shaped grooves form a complete space, and an O-shaped sealing ring is installed in the complete space. A chamfer is processed at the inlet of the O-shaped groove at the groove of the end face of the static sealing ring 1 so as to ensure that the step of the inlet of the O-shaped groove can cross the bottom of the O-shaped sealing ring during assembly and the O-shaped sealing ring is not damaged.
The processing of 4 cascaded excircles of rotary seal ring has shallow slot 7, when rotary seal ring 4 assembles integratively with static sealing ring 1, shallow slot 7 probes into 1 terminal surface recess inboard of static sealing ring and cooperates with the terminal surface recess cell wall, shallow slot 7 has reduced rotary seal ring 4 and has been located the contact area of 1 terminal surface recess cell wall of rotary seal ring 4 excircle and the static sealing ring of 1 inboard of static sealing ring, and then reduce the friction surface, shallow slot 7 forms the holding tank simultaneously, lubricating oil forms pressure because of the high-speed rotation of axle in the shallow slot 7, block that lubricating oil reveals.
The installation process of the bearing box oil stopper comprises the following steps: when in installation, the middle-sized O-shaped sealing ring 2 of the three O-shaped sealing rings 2 is placed into an O-shaped groove matched with the rotary sealing ring 4 and the static sealing ring 1, the static sealing ring 1 is pressed into the rotary sealing ring 4, because the inlet of the O-shaped groove at the groove position of the end surface of the static sealing ring 1 is processed with a chamfer, can ensure that the inlet step of the O-shaped groove can cross the bottom of the O-shaped sealing ring during assembly without damaging the O-shaped sealing ring, and once the O-shaped sealing ring is pressed in, the O-shaped groove is higher than the inner diameter of the O-shaped sealing ring and can not be withdrawn, the static sealing ring 1 and the rotary sealing ring 4 are connected into a whole by the O-shaped sealing ring 2, the large O-shaped sealing ring and the small O-shaped sealing ring 2 are respectively arranged in an O-shaped groove at the outer circle of the static sealing ring 1 and an O-shaped groove at the inner hole of the rotary sealing ring 4 matched with the shaft, the oil stopper of the bearing box is pressed into the bearing gland 6, and the rotary sealing ring 4 is guaranteed to be pressed into the bearing box; the drain hole 5 faces downwards, and the bearing box oil stopper can be easily dismounted by prying the dismounting groove at the outer side of the static sealing ring 1 during dismounting.
Claims (6)
1. The bearing box oil resistor is characterized by comprising a rotary sealing ring, a static sealing ring and an O-shaped sealing ring, wherein the rotary sealing ring and the static sealing ring are connected into a whole by the O-shaped sealing ring arranged in an O-shaped groove of the rotary sealing ring and the O-shaped groove of the static sealing ring; the rotary sealing ring is sleeved on the shaft, and a bearing gland is sleeved on the outer circle of the static sealing ring.
2. The bearing housing oil resistor of claim 1, wherein: the inner hole of the rotary sealing ring is in a step shape, two O-shaped grooves are processed on the step-shaped inner hole, one O-shaped groove is positioned at the hole wall of the inner hole matched with the shaft, the other O-shaped groove is positioned at the hole wall of the inner hole matched with the static sealing ring, an O-shaped sealing ring is arranged in the O-shaped groove on the hole wall of the inner hole matched with the shaft in an interference fit mode, and the rotary sealing ring is driven to rotate together with the shaft by the interference of the O-shaped sealing ring when; an O-shaped groove processed on an inner hole of the rotary sealing ring matched with the static sealing ring and a corresponding O-shaped groove on the static sealing ring are internally provided with O-shaped sealing rings, and the static sealing ring and the rotary sealing ring are connected into a whole by the O-shaped sealing rings.
3. The bearing housing oil resistor of claim 1, wherein: and pumping grooves are uniformly machined in the circumferential direction of the outer circle of the rotary sealing ring close to the end face of the static sealing ring.
4. The bearing housing oil resistor of claim 1, wherein: the static sealing ring excircle processing has two recesses, and one of them recess is O type groove, installs O shape sealing washer in the O type inslot, and O shape sealing washer interference is installed and is guaranteed static sealing ring location between the O type groove of static sealing ring and bearing gland hole, and another recess is the dismantlement groove, and the processing of dismantlement inslot has a set of blowoff hole, and the blowoff hole communicates with each other with the recess on the static sealing ring hole, and the lubricating oil that lets out from static sealing ring hole flows through the blowoff hole.
5. The bearing housing oil resistor of claim 1, wherein: an end face groove is formed in the end face of the static sealing ring, close to one side of the rotary sealing ring, an O-shaped groove corresponding to the O-shaped groove of the rotary sealing ring is formed in the groove wall of the end face groove, and the two O-shaped grooves form a complete space and are provided with O-shaped sealing rings; and a chamfer is processed at the inlet of the O-shaped groove at the groove on the end surface of the static sealing ring.
6. The bearing housing oil resistor of claim 1, wherein: the stepped outer circle of the rotary sealing ring is provided with a shallow groove, and when the rotary sealing ring and the static sealing ring are assembled into a whole, the shallow groove extends into the inner side of the end face groove of the static sealing ring and is matched with the groove wall of the end face groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021131899.8U CN212563761U (en) | 2020-06-18 | 2020-06-18 | Bearing box oil-resistant device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021131899.8U CN212563761U (en) | 2020-06-18 | 2020-06-18 | Bearing box oil-resistant device |
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| Publication Number | Publication Date |
|---|---|
| CN212563761U true CN212563761U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021131899.8U Active CN212563761U (en) | 2020-06-18 | 2020-06-18 | Bearing box oil-resistant device |
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| CN (1) | CN212563761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007581A (en) * | 2021-02-23 | 2021-06-22 | 湖北菲博尔高温节能科技有限公司 | Prevent seal structure that emollient revealed in digit control machine tool bearing box |
-
2020
- 2020-06-18 CN CN202021131899.8U patent/CN212563761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007581A (en) * | 2021-02-23 | 2021-06-22 | 湖北菲博尔高温节能科技有限公司 | Prevent seal structure that emollient revealed in digit control machine tool bearing box |
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