CN212857893U - Rotary joint for conveying cutting oil - Google Patents
Rotary joint for conveying cutting oil Download PDFInfo
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- CN212857893U CN212857893U CN202021908627.4U CN202021908627U CN212857893U CN 212857893 U CN212857893 U CN 212857893U CN 202021908627 U CN202021908627 U CN 202021908627U CN 212857893 U CN212857893 U CN 212857893U
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- hollow shaft
- rotary joint
- shaped ring
- groove ball
- deep groove
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Abstract
The utility model relates to a rotary joint for cutting oil conveying belongs to deep hole and bores rotary joint technical field. The hollow shaft is installed in the center of the joint body through two deep groove ball bearings and a plane bearing, a sealing gasket, an O-shaped ring b and the plane bearing are sequentially installed on the right end of the hollow shaft from left to right, the O-shaped ring b and the sealing gasket isolate the inner cavity of the deep groove ball bearing on the hollow shaft from the outer oil cavity, erosion of a cutting oil medium to a sealing structure is effectively avoided, and the phenomena of cutting fluid leakage and dripping leakage are avoided. The utility model discloses a bearing changes prior art's sliding contact pair into rolling contact pair, effectively stops cutting fluid seepage, water clock, and sealing performance is strong, and job stabilization is reliable, long service life, operation and easy maintenance, reduction in production cost. The problem of current rotary joint adopt sliding seal, rotary joint very easily appears the oil leak phenomenon, leads to short service life, production efficiency low is solved.
Description
Technical Field
The utility model relates to a rotary joint for cutting oil conveying belongs to deep hole and bores rotary joint technical field.
Background
The rotary joint is required to be used for conveying cutting oil during deep hole drilling, the existing rotary joint adopts sliding seal, the corrosion of cutting oil medium and the abrasion of metal particles contained in the oil to the sliding seal of the rotary joint are large, and in addition, the pressure of 4MPa is born during working, so that the oil leakage phenomenon of the rotary joint is easy to occur, and the service life is short. In addition, the rotary joint adopting the sliding seal is difficult to maintain, and once the rotary joint is damaged, the rotary joint can be returned to a factory for maintenance, so that the production time is delayed, and the production cost is greatly increased. Therefore, it is very important to develop a rotary joint with strong sealing performance, stable and reliable work, long service life, convenient operation and maintenance and low production cost.
Disclosure of Invention
The utility model aims to provide a cutting fluid cutting machine which adopts a plane bearing as a contact pair, uses an O-shaped ring and a sealing gasket to separate an inner cavity and an outer cavity of a hollow shaft, uses a compression spring to apply pre-pressure, effectively avoids the leakage and the drip leakage of the cutting fluid and can resist the pressure of 7 MPa; the rotary joint for conveying the cutting oil has the advantages of strong sealing performance, stable and reliable work, long service life, convenience in operation and maintenance and reduction of production cost.
The utility model discloses a realize above-mentioned purpose through following technical scheme:
this a rotary joint for cutting oil conveying comprises joint body, hollow shaft, deep groove ball bearing, spring, back lid, flat bearing, sealed pad, O shape circle an and O shape circle b, connects the body right-hand member and has a back lid through the mounting screw, and the preparation has the inlet port of being connected with hydraulic pressure oil pipe on the back lid, connects the center of the body and is equipped with hollow shaft, its characterized in that: the hollow shaft is arranged in the center of the joint body through two deep groove ball bearings and a plane bearing, a sealing gasket, an O-shaped ring b and the plane bearing are sequentially arranged on the right end of the hollow shaft from left to right, and the O-shaped ring b and the sealing gasket separate an inner cavity of the deep groove ball bearing on the hollow shaft from an outer cavity with oil; the concave cavity of the rear cover is internally provided with a spring which is contacted with a plane bearing on the hollow shaft, and the contact surface of the joint body and the rear cover is provided with an O-shaped ring a.
The two deep groove ball bearings can bear the working rotating speed of 6000 rpm; the sealing gasket, the O-shaped ring a and the O-shaped ring b can resist pressure of 7 MPa.
Compared with the prior art, the utility model beneficial effect lie in:
the rotary joint for conveying the cutting oil changes a sliding contact pair in the prior art into a rolling contact pair through a plane bearing, an inner cavity and an outer cavity of a hollow shaft are isolated by an O-shaped ring and a sealing gasket, pre-pressure is applied by a compression spring, erosion of a sealing structure by a cutting oil medium is effectively avoided, the phenomena of leakage and dripping of the cutting fluid are avoided, and the pressure resistance is 7 MPa; the sealing performance is strong, and the service life of the joint body is greatly prolonged. Because the rolling contact pair is changed, the purchasing and maintenance accessories are easy to obtain, the maintenance and the replacement do not need to return to the factory, and the operation is simple and convenient. Not only improves the working efficiency, but also reduces the production cost. The problems that the existing rotary joint adopts sliding seal, the rotary joint is easy to leak oil under the actions of corrosion of cutting oil medium, abrasion of metal particles contained in oil and 4MPa pressure, the service life is short, maintenance is difficult, factory return is required, the production efficiency is low and the cost is high are solved.
Drawings
Fig. 1 is an overall structural view of a rotary joint for cutting oil delivery.
In the figure: 1. the joint comprises a joint body, 2, a hollow shaft, 3, a deep groove ball bearing, 4, a spring, 5, a rear cover, 6, a plane bearing, 7, a sealing gasket, 8, O-shaped rings a and 9 and an O-shaped ring b.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the attached drawing figures:
the rotary joint for conveying cutting oil is composed of a joint body 1, a hollow shaft 2, deep groove ball bearings 3, a spring 4, a rear cover 5, a plane bearing 6, a sealing gasket 7, an O-shaped ring a8 and an O-shaped ring b9, wherein the rear cover 5 is installed at the right end of the joint body 1 through a screw, an oil inlet connected with a hydraulic oil pipe is formed in the rear cover 5, the hollow shaft 2 is installed in the center of the joint body 1 through the two deep groove ball bearings 3 and the plane bearing 6, the sealing gasket 7, the O-shaped ring b9 and the plane bearing 6 are sequentially installed on the right end of the hollow shaft 2 from left to right, and the O-shaped ring b9 and the sealing gasket 7 separate an inner cavity of the deep groove ball bearings 3 from an; the spring 4 is arranged in the cavity of the rear cover 5, the spring 4 is contacted with the plane bearing 6 on the hollow shaft 2, and the contact surface of the joint body 1 and the rear cover 5 is provided with an O-shaped ring a 8. The two deep groove ball bearings 3 can bear the working rotating speed of 6000 rpm; the sealing gasket 7, the O-shaped ring a8 and the O-shaped ring b9 can resist 7MPa (see figure 1).
The working principle of the rotary joint for cutting oil delivery is as follows:
the rotary joint for conveying the cutting oil adopts a mechanical sealing structure, a plane bearing 6 of the rotary joint is used as a contact pair, an inner cavity which is provided with two deep groove ball bearings 3 and is arranged on a hollow shaft 2 is isolated from an outer cavity which is formed by a rear cover 5 and a joint body 1 and is provided with oil through an O-shaped ring b9 and a sealing gasket 7, pre-pressure is applied to the plane bearing 6 through a spring 4, leakage and dripping of the cutting fluid are effectively avoided, and the pressure resistance of a sealing component can reach 7 MPa.
The rotary joint for conveying the cutting oil is supported by two deep groove ball bearings 3, and the rotary joint body 1 can run at high speed, and the rotating speed can reach more than 6000 rpm. The sealing assembly consists of a sealing gasket 7, two O-shaped rings, namely an O-shaped ring a8 and an O-shaped ring b9, and a firm seal capable of resisting 7MPa is formed. The plane bearing 6 is installed between the hollow shaft 2 and the spring 4, and forms a rotating pair of the cutting oil pressure chamber. The spring 4 applies pre-tightening pressure to the plane bearing 6 and the O-shaped ring b9, and during operation, the pressure cutting oil provides a holding force for the joint body 1, so that the normal operation of the rotary joint is guaranteed.
When the cutting machine works, the hollow shaft 2 and the plane bearing 6 rotate, and pressure cutting oil enters through the oil inlet hole in the rear cover 5 and then is sent out through the hollow shaft 2 to enter the part of the working machine requiring oil. The two deep groove ball bearings 3 provide support and high speed rotation capability, and the O-rings a8, b9 and the seal 7 of the seal assembly ensure that pressurized oil does not leak into the inner cavity of the deep groove ball bearing 3 mounted on the hollow shaft 2.
The above description is only a preferred embodiment of the present invention, and the above illustration does not limit the essence of the present invention in any form, and any simple modification or variation of the above embodiments based on the technical essence of the present invention and equivalent embodiments which may be changed or modified to equivalent variations by using the technical essence of the present invention by those of ordinary skill in the art after reading the present description still belong to the technical solution of the present invention without departing from the essence and scope of the present invention.
Claims (2)
1. The utility model provides a rotary joint for cutting oil conveying, it is by the joint body (1), hollow shaft (2), deep groove ball bearing (3), spring (4), back lid (5), flat bearing (6), sealed pad (7), O shape circle a (8) and O shape circle b (9) constitute, joint body (1) right-hand member has back lid (5) through the mounting screw, the preparation has the inlet port of being connected with hydraulic pressure oil pipe on back lid (5), hollow shaft (2) are equipped with at the center of the joint body (1), its characterized in that: the hollow shaft (2) is arranged in the center of the joint body (1) through two deep groove ball bearings (3) and a plane bearing (6), a sealing gasket (7), an O-shaped ring b (9) and the plane bearing (6) are sequentially arranged on the right end of the hollow shaft (2) from left to right, and the O-shaped ring b (9) and the sealing gasket (7) separate the inner cavity and the outer oil cavity of the deep groove ball bearing (3) on the hollow shaft (2); a spring (4) is installed in a concave cavity of the rear cover (5), the spring (4) is in contact with a plane bearing (6) on the hollow shaft (2), and an O-shaped ring a (8) is installed on the contact surface of the joint body (1) and the rear cover (5).
2. A rotary joint for cutting oil delivery as set forth in claim 1, wherein: the two deep groove ball bearings (3) can bear the working rotating speed of 6000 rpm; the sealing gasket (7), the O-shaped ring a (8) and the O-shaped ring b (9) can resist pressure of 7 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908627.4U CN212857893U (en) | 2020-09-04 | 2020-09-04 | Rotary joint for conveying cutting oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021908627.4U CN212857893U (en) | 2020-09-04 | 2020-09-04 | Rotary joint for conveying cutting oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212857893U true CN212857893U (en) | 2021-04-02 |
Family
ID=75195024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021908627.4U Active CN212857893U (en) | 2020-09-04 | 2020-09-04 | Rotary joint for conveying cutting oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212857893U (en) |
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2020
- 2020-09-04 CN CN202021908627.4U patent/CN212857893U/en active Active
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