CN212804703U

CN212804703U - High-pressure high-speed rotary sealing device for engineering machinery

Info

Publication number: CN212804703U
Application number: CN202021227246.XU
Authority: CN
Inventors: 赵健; 宋荣刚; 张俊岩; 宋希谦
Original assignee: Hebei Longlive Seals Technology Co ltd
Current assignee: Hebei Longlive Seals Technology Co ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-03-26
Anticipated expiration: 2030-06-29

Abstract

The utility model discloses a high-speed rotary seal device of engineering machine tool high pressure, which comprises an outer shell, the fixed end cover that is provided with in shell one side, the inlet has been seted up on the end cover, inlet below fixedly connected with pipeline, the inside hollow pivot that is provided with of shell, be provided with a bearing between shell and the hollow pivot, the one end that hollow pivot is close to the pipeline is provided with the carbide ring, the pipeline end is provided with the second sealing ring, the inside liquid circulation passageway of having seted up of hollow pivot and pipeline has realized the utility model has the advantages of simple structure, it is sealed effectual, long service life saves the cost.

Description

High-pressure high-speed rotary sealing device for engineering machinery

Technical Field

The utility model belongs to the technical field of mechanical equipment, especially, relate to a high-speed rotary seal device of engineering machine tool high pressure.

Background

The engineering machinery often needs to use a rotary sealing device, however, the common rotary joint used in the current market needs to be under higher revolution and higher pressure for a long time in the use process, so that the movable rotary sealing device is required to have better wear resistance and also has the requirement of keeping better running stability and sealing performance under high pressure. And current planar rotary joint, most all adopt ordinary carbon graphite and carborundum to mate the material as sealed, and most designs all adopt the spring to carry out the wearing and tearing compensation to sealing material, in whole rotary joint operation in-process, inside seal structure is in the pressure-bearing state completely, especially need receive the change of revolution height at any time when high pressure, very easily cause graphite ring and carborundum fracture, and can not effectively cool down in the contact department, extension machine life, under the sealed condition that loses efficacy of rotary joint, inside medium leaks and flows into the bearing, can lead to the bearing card to die, and then probably lead to all transmission parts of whole engineering machine to damage and produce the incident. Therefore, the high-pressure high-speed rotary sealing device for the engineering machinery is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-speed rotary seal device of engineering machine tool high pressure aims at solving the above-mentioned problem that has the function insufficiency.

The utility model relates to a realize like this, a high-speed rotary seal device of engineering machine tool high pressure, which comprises an outer shell, the fixed end cover that is provided with in shell one side, the inlet has been seted up on the end cover, inlet below fixedly connected with pipeline, the inside hollow rotating shaft that is provided with of shell, be provided with a bearing between shell and the hollow rotating shaft, the one end that hollow rotating shaft is close to the pipeline is provided with the carbide ring, the pipeline end is provided with the second sealing ring, the inside liquid circulation passageway of having seted up of hollow rotating shaft and pipeline.

Preferably, the shell and the end cover are both provided with extension plates, the extension plates are provided with fixing screws, and the shell is in threaded connection with the end cover through the fixing screws.

Preferably, the inside one end of keeping away from a bearing of shell is fixed and is provided with concave type fixed block, be provided with the sealed dish in the concave type fixed block, sealed dish inside and hollow rotating shaft fixed connection, be provided with first sealing ring between sealed dish outside and the concave type fixed block.

Preferably, be provided with a plurality of connecting rods on the one side that sealed dish is close to the end cover, the one end fixedly connected with cyclic annular gear dish of sealed dish is kept away from to the connecting rod, cyclic annular gear dish meshes with driven gear mutually.

Preferably, the inside activity of driven gear is provided with No. two bearings, No. two bearing internal fixations are provided with the dead lever, the dead lever is kept away from the one end and the shell inner wall fixed connection of No. two bearings, driven gear lower extreme fixed surface is provided with the fan.

Preferably, a sensor is fixedly arranged between the fixed rod and the concave fixed block.

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

the utility model discloses equipment is through the concave type fixed block that sets up in the shell inside, in the concave type fixed block with sealed dish swing joint, and the first sealing ring that sets up between sealed dish outside and concave type fixed block, effectively form the dynamic seal, the liquid that can effectually prevent to leak gets into a bearing, lead to a bearing card to die, avoid causing the incident, leak out simultaneously as liquid and in time detect out through the sensor, form duplicate protection, and drive sealed dish through hollow rotating shaft and rotate and then drive annular gear dish and rotate, drive driven gear through annular gear dish and rotate, rotation through driven gear can effectually drive the fan and rotate, realize the effective cooling to carbide ring and second sealing ring, thereby prolong this engineering machine tool high pressure high speed rotary seal device's life.

Drawings

Fig. 1 is a cross-sectional view of a side view of the high-pressure high-speed rotary sealing device of the engineering machine of the present invention;

fig. 2 is a schematic structural diagram of an annular gear plate of the high-pressure high-speed rotary sealing device of the engineering machinery of the present invention;

fig. 3 is an enlarged schematic view of a structure a in fig. 1 of the high-pressure high-speed rotary sealing device of the utility model.

In the figure: 1. a housing; 2. an end cap; 3. an extension plate; 4. fixing screws; 5. a hollow rotating shaft; 501. a liquid flow channel; 6. a first bearing; 7. a liquid inlet; 8. a first seal ring; 9. A concave fixed block; 10. sealing the disc; 11. a sensor; 12. a cemented carbide ring; 13. a second seal ring; 14. a connecting rod; 15. an annular gear plate; 16. a driven gear; 17. a second bearing; 18. A fan; 19. a pipeline; 20. and (5) fixing the rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely 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 thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-3, an engineering machinery high-pressure high-speed rotary sealing device includes a housing 1, an end cover 2 is fixedly disposed on one side of the housing 1, a liquid inlet 7 is disposed on the end cover 2, a pipeline 19 is fixedly connected below the liquid inlet 7, a hollow rotating shaft 5 is disposed inside the housing 1, a first bearing 6 is disposed between the housing 1 and the hollow rotating shaft 5, a hard alloy ring 12 is disposed at one end of the hollow rotating shaft 5 close to the pipeline 19, a second sealing ring 13 is disposed at the tail end of the pipeline 19, and a liquid circulation channel 501 is disposed inside the hollow rotating shaft 5 and the pipeline 19.

The utility model discloses in all be provided with extension board 3 on shell 1 and the end cover 2, be provided with fixed screw 4 on the extension board 3, shell 1 passes through fixed screw 4 threaded connection, effectual fixed shell 1 and end cover 2 with end cover 2.

The utility model discloses in 1 inside one end of keeping away from a bearing 6 of shell is fixed and is provided with concave type fixed block 9, be provided with sealed dish 10 in the concave type fixed block 9, sealed dish 10 is inside and 5 fixed connection of hollow rotating shaft, be provided with first sealing ring 8 between the sealed 10 outside of dish and the concave type fixed block 9, through the sealed between concave type fixed block 9 and the sealed dish 10, the liquid that can effectually prevent to leak gets into a bearing 6, leads to a bearing 6 card to die, avoids causing the incident.

The utility model discloses in sealed dish 10 is provided with a plurality of connecting rods 14 on being close to one side of end cover 2, the one end fixedly connected with cyclic annular gear dish 15 of sealed dish 10 is kept away from to connecting rod 14, cyclic annular gear dish 15 meshes with driven gear 16 mutually, drives sealed dish 10 through hollow rotating shaft 5 and rotates and then drive cyclic annular gear dish 15 and rotate, drives driven gear 16 through cyclic annular gear dish 15 and rotates.

The utility model discloses in 16 inside activities of driven gear are provided with bearing 17 No. two, bearing 17 internal fixation is provided with dead lever 20 No. two, No. two bearing 17's one end and 1 inner wall fixed connection of shell are kept away from to dead lever 20, effectively guarantee driven gear 16's position. The fan 18 is fixedly arranged on the surface of the lower end of the driven gear 16, the fan 18 can be effectively driven to rotate through the rotation of the driven gear 16, and the effective cooling of the hard alloy ring 12 and the second sealing ring 13 is realized.

The utility model discloses in fixed sensor 11 that is provided with between dead lever 20 and the concave type fixed block 9 in time detects inside whether have liquid to leak out.

The utility model discloses a theory of operation is: when this high-speed rotary seal device of engineering machine tool high pressure during operation, liquid gets into this rotary seal device by inlet 7, and flow in liquid circulation passageway 501, and hollow shaft 5 rotates, form the dynamic seal between the carbide ring 12 of hollow shaft 5 front end and the second sealing ring 13, guarantee that liquid does not leak, simultaneously, drive sealed dish 10 through hollow shaft 5 and rotate and then drive annular gear dish 15 and rotate, drive driven gear 16 through annular gear dish 15 and rotate, can effectually drive fan 18 through driven gear 16's rotation and rotate, realize the effective cooling to carbide ring 12 and second sealing ring 13.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a high-speed rotary seal device of engineering machine tool high pressure which includes shell (1), its characterized in that: the utility model discloses a bearing, including shell (1), end cover (2), inlet (7) below fixedly connected with pipeline (19), shell (1) inside is provided with hollow pivot (5), be provided with No. one bearing (6) between shell (1) and hollow pivot (5), the one end that hollow pivot (5) are close to pipeline (19) is provided with carbide ring (12), pipeline (19) end is provided with second sealing ring (13), liquid circulation passageway (501) have been seted up to hollow pivot (5) and pipeline (19) inside.

2. The high-pressure high-speed rotary sealing device for the engineering machinery as claimed in claim 1, wherein: the improved structure is characterized in that extension plates (3) are arranged on the shell (1) and the end cover (2), fixing screws (4) are arranged on the extension plates (3), and the shell (1) is in threaded connection with the end cover (2) through the fixing screws (4).

3. The high-pressure high-speed rotary sealing device for the engineering machinery as claimed in claim 1, wherein: the fixed concave type fixed block (9) that is provided with of one end of keeping away from a bearing (6) inside shell (1), be provided with sealed dish (10) in concave type fixed block (9), sealed dish (10) inside and hollow rotating shaft (5) fixed connection, be provided with first sealing ring (8) between sealed dish (10) outside and concave type fixed block (9).

4. The high-pressure high-speed rotary sealing device for the engineering machinery as claimed in claim 3, wherein: seal dish (10) and be provided with a plurality of connecting rods (14) on being close to one side of end cover (2), the one end fixedly connected with ring gear dish (15) of sealing dish (10) is kept away from in connecting rod (14), ring gear dish (15) and driven gear (16) mesh mutually.

5. The high-pressure high-speed rotary sealing device for the engineering machinery as claimed in claim 4, wherein: driven gear (16) inside activity is provided with No. two bearings (17), No. two bearing (17) internal fixation is provided with dead lever (20), the one end and shell (1) inner wall fixed connection of No. two bearings (17) are kept away from in dead lever (20), driven gear (16) lower extreme fixed surface is provided with fan (18).

6. The high-pressure high-speed rotary sealing device for the engineering machinery as claimed in claim 5, wherein: a sensor (11) is fixedly arranged between the fixed rod (20) and the concave fixed block (9).