CN201661614U

CN201661614U - Disc type separator bearing cooling structure

Info

Publication number: CN201661614U
Application number: CN2010200230320U
Authority: CN
Inventors: 牟富君; 王斌
Original assignee: JUNENG MACHINERY (CHINA) CO Ltd; Jiangsu Juneng Machinery Co Ltd
Current assignee: JUNENG MACHINERY (CHINA) CO Ltd; Jiangsu Juneng Machinery Co Ltd
Priority date: 2010-01-20
Filing date: 2010-01-20
Publication date: 2010-12-01
Anticipated expiration: 2020-01-20

Abstract

The utility model relates to an improvement of a high-speed disc type separator bearing system, which is characterized in that a groove is arranged on the inner surface on the wall of a bearing chamber in the radial direction; the space between two axial outer ends of the groove and a bearing spacer sleeve is sealed to form a sealed cavity; and the sealed cavity is connected with a water inlet and outlet channel. Heat produced by a bearing which is operated at high speed in long term can be brought out by accessing circulating cooling water to the bearing, without increasing volume, therefore, the temperature rise of the bearing is limited, and the actual measurement result of an experiment shows that the temperature of the bearing is only increased by about 70 DEG C after the circulating water cooling structure is added, and is reduced by 30 DEG C compared with the original 100 DEG C, not only the service life of the bearing is prolonged, but also the operation accuracy of the separator is obviously improved, and the operation accuracy of the separator is effectively ensured and the service life of the bearing is prolonged.

Description

Disk centrifuge bearing cooling structure

Technical field

Model utility is about the improvement to high speed dish type seperator bearing arrangement, relates in particular to the bearing cooling structure that does not change the bearing portion structure.

Background technique

Disk centrifuge is a high-speed rotating machine, and rotating speed is usually at 3000-6000 rev/min, because the long-term again operation continuously of seperator rotating speed height, the shaft bearing temperature rise is comparatively serious, temperature rise up to 100 ℃ about.Owing to be subjected to the restriction of seperator main shaft structure, there is not the space mounting cooling system in the bearing chamber outside, only depend on the ambient air heat radiation can not effectively reduce and cause bearing running hot owing to run up.Bearing temperature raises, and can bring a lot of negative effects, for example influences the machine run precision, influence bearing working life, and can bring potential safety hazard to the Security of seperator high speed rotating.People are head it off, have once taked multiple corrective measure, for example are processed into dentation structure (Fig. 1) at bearing chamber 1 overcoat, increase fan cooled, but all thoroughly do not deal with problems.Above-mentioned deficiency still has is worth improved place.

The model utility content

The model utility purpose is to overcome the deficiency of above-mentioned prior art, provides a kind of and is not changing original basic structure, can effectively reduce the seperator bearing temperature, guarantees the bearing disk centrifuge bearing cooling structure in working life.

The model utility purpose realizes, the main improvement is that the bearing chamber inwall is radially dug a cavity, become an airtight cooling water chamber, chew by being provided with to connect at two ends, the heat that bearing produces is taken in the circulation of formation cooling water out of, heats up thereby limited the long-term operation of bearing high speed, overcome above-mentioned the deficiencies in the prior art, realized the model utility purpose.Specifically, model utility disk centrifuge bearing cooling structure, bag is inserted rotating shaft and block bearing, it is characterized in that bearing locular wall inner face has radially dug indent, form closed cavity by sealing between axial outer two ends of indent and bearing spacer, closed cavity is connected with the water inlet and outlet passage.

Owing to be subjected to strong mechanical constraints, interior concave space is less relatively, and for improving circulating water cooling effect, a kind of better is that the water inlet and outlet passage is arranged at the axial two ends of closed cavity.For helping I﹠ M, a kind of better is to be processed with axial bore at the bearing chamber wall thickness, is communicated with externally connected pipe (water channel) and closed cavity one end respectively.

Model utility disk centrifuge bearing cooling structure, owing between bearing chamber and bearing spacer, be processed with airtight cooling space, and the access way that connects circulating water, thereby constitute circulating water cooling structure, with respect to prior art, do not increase any volume, by feeding recirculated cooling water, the heat that the long-term operation of bearing high speed produces can be taken out of, thereby limited the temperature rise of bearing, through the test actual measurement, increase the temperature rise of circulating water cooling structure rear bearing only about 70 ℃, more originally 100 ℃ have descended about 30 ℃, have not only prolonged bearing working life, and make the running accuracy of seperator that remarkable improvement arranged, effectively guarantee the running accuracy of seperator and prolonged bearing working life.

Below in conjunction with a specific embodiment; model utility is further understood in exemplary illustration and help; but embodiment's detail only is for model utility is described; do not represent model utility design whole technological schemes down; therefore should not be construed as the total technological scheme of model utility is limited; some are In the view of the technician; the unsubstantiality that does not depart from the model utility design increases and/or change; for example change or replace, all truely use novel protected scope so that technical characteristics with same or similar technique effect is simple.

Description of drawings

Fig. 1 is a kind of prior art bearing chamber cross section structure schematic representation.

Fig. 2 is a model utility bearing chamber cross section structure schematic representation.

Embodiment

Embodiment: referring to Fig. 2, model utility disk centrifuge bearing cooling structure, process a footpath at bearing chamber wall 1 inner side surface and concave 3, axial outer two ends of indent and 2 of bearing spacers respectively increase two seals circle 6, make bearing chamber and bearing spacer assembling back form an airtight cavity.The bearing chamber wall has axially processed a blind hole 10, and blind hole is communicated with directly concave 3 one ends and externally connected pipe 7 respectively, and 3 the other ends that directly concave are connected with externally connected pipe 4, form the recirculated water cooling structure jointly with airtight cavity.During the seperator running, same by the circulation of external cooling water, the heat that bearings at both ends 5 and 8,9 high speed rotating produce is taken away.

To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; the for example variation of externally connected pipe position; the change of cooling medium; or the like unsubstantiality change, can be employed equally, can both realize and basic identical function of the foregoing description and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection domain.

Claims

1. disk centrifuge bearing cooling structure wraps and inserts rotating shaft and block bearing, it is characterized in that bearing locular wall inner face has radially dug indent, forms closed cavity by sealing between axial outer two ends of indent and bearing spacer, and closed cavity is connected with the water inlet and outlet passage.

2. according to the described disk centrifuge bearing of claim 1 cooling structure, it is characterized in that the water inlet and outlet passage is arranged at the axial two ends of closed cavity.

3. according to the described disk centrifuge bearing of claim 2 cooling structure, it is characterized in that the bearing chamber wall thickness is processed with axial bore, be communicated with a water channel and closed cavity one end respectively.