CN2103377U

CN2103377U - High-speed rotator for horizontal centrifuger

Info

Publication number: CN2103377U
Application number: CN 91218006
Authority: CN
Inventors: 王雅谷
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-07-09
Filing date: 1991-07-09
Publication date: 1992-05-06

Abstract

The utility model relates to a high-speed rotator for horizontal helical centrifuges. In the prior art, the wobble of the overhanging end of a roller results in the dynamic unbalance of a complete appliance and sealed premature failure. The utility model is characterized in that a high-speed roller or static pressure slide bearing 8 or 35, which can be used for decreasing the wobble degree of the overhanging end, is installed on a high-speed oil delivery joint 9 which is arranged on the outermost overhanging end of a roller 3. The bearing 8 or 35 is in an identical shaft line with bearing 1, 5 or 33, 34 on both ends of the roller. A pressure lubricating device 10 or 36 is adopted for cooling and lubricating the roller or the slide bearing. The horizontal helical centrifuge can be ensured to run in a high-speed smooth work condition.

Description

High-speed rotator for horizontal centrifuger

The utility model relates to the high speed rotating device that is used for horizontal screw centrifuge, belong to the improvement of existing centrifuge being rotated device, be used to improve wearing and tearing because of expanded graphite sealing ring in the complete machine unbalance dynamic that swing caused of centrifuge projecting end and the high speed oil transportation joint.

Chinese patent (patent No. 87206560 is authorized day 88427) discloses a kind of " the spiral shell centrifugal solid-liquid separator crouches ", constituting of its tumbler: the two ends of cylinder are installed on the two high speed rolling bearings, and cylinder is between the screwed pipe of same axis and the inner wall of rotary drum rolling bearing is set, and the screwed pipe spindle nose links to each other with hydraulic motor output shaft, drives screwed pipe with respect to cylinder work little overspeed rotation in the same way by hydraulic motor.In order to satisfy the job requirement of solid-liquid centrifugation, cylinder must high speed rotating (about 3000r/min), and it then is that input quantity by the change hydraulic motor realizes that the differential of cylinder and discharge screwed pipe mates.Therefore unavoidably exist following weak point: the belt pulley end face of hydraulic motor and cylinder projecting end connects joins, and connect the high speed oil transportation joint of joining the projecting end of centrifuge is further prolonged with the hydraulic motor end face, centrifuge is because of the caused moment of flexure of projecting end gravity and the band caused moment of flexure of transmission driving force and because of disalignment that alignment error caused, separate under the operating mode at centrifuge, all will make projecting end produce swing.Centrifuge for high speed rotating, even there is very a spot of swing in projecting end, all will produce serious wearing and tearing to the expanded graphite sealing ring between the joint axle housing of high speed rotating in the oil transportation joint and the static joint axis, cause oil transportation joint inner high voltage chamber and low-pressure cavity hermetic barrier premature failure, and the differential coupling between centrifugal basket and the screwed pipe can't accurately be realized, solid-liquid separation effect is affected; Because the swing of centrifuge projecting end also can make centrifuge overall dynamic-balance condition change, and influence the service life of tumbler, and the noise increase when centrifuge is run up.

The purpose of this utility model is to overcome existing above-mentioned deficiency in the prior art, and provide a kind of horizontal screw centrifuge projecting end momentum that is intended to reduce, improve the overall dynamic-balance performance, improve the high speed rotating device of expanded graphite ring wear in the oil transportation joint, to improve the service life of centrifuge.

The purpose of this utility model is realized by following technological means: the utility model is at the operating mode of centrifuge high speed rotating, the following design of high speed rotating device: the cylinder two ends are installed on the two high speed rotating supports, and this cylinder is between the screwed pipe of same axis and the inner wall of rotary drum and is provided with the rolling bearing group, between the belt pulley of cylinder projecting end and the hydraulic motor and between hydraulic motor and the high speed oil transportation joint, end face connects and joins successively on same axis, being in cylinder overhangs the high speed rotating supporting of the minimizing projecting end oscillating quantity of usefulness is installed on its shell of high speed oil transportation joint of outermost end, the rotating support at this rotating support and cylinder two ends is in same axis, and is communicated with the force feed device after the inlet and outlet of fuel channel parallel connection of each rotating support.

The utility model compared with prior art has following advantage: (1) has improved the high-speed balancing condition of complete machine because three rotating supports are in same axis, steady, the noise reduction of running when making centrifuge work.(2) guaranteed that the most important between the joint axle housing of high speed rotating and the static joint axis also is that the weakest expanded graphite hermetic barrier is moved under nominal situation, prolong service life, also guaranteed cylinder and screwed pipe differential matched accuracy and reliability.

Description of drawings is as follows:

The high speed rotating device schematic diagram that Fig. 1 forms for rolling bearing.(embodiment one)

The rotating support generalized section that Fig. 2 forms for rolling bearing.

Fig. 3 is the high speed rotating device schematic diagram that the utility model static-pressure sliding bearing is formed.(embodiment two)

Fig. 4 is the force feed device schematic diagram of sliding bearing.

The utility model will be described in further detail in conjunction with the embodiments.

The high speed rotating device of forming by rolling bearing as shown in Figure 1, the two ends of cylinder 3 are installed in by the double-row self-aligning ball bearing to be formed in the high speed scroll supporting 1 and 5, and cylinder 3 is in and is provided with the rolling bearing group 2 that not only can hold radial load but also bear axial force between the screwed pipe 4 of same axis and the inner wall of rotary drum.Be installed between the belt pulley 6 and hydraulic motor 7 of idler 5 outside cylinders 3 projecting ends, and between hydraulic motor 7 and the high speed oil transportation joint 9 on same axis successively end face connect and join installation.Driving mechanism makes cylinder 3 high speed rotating by the band transmission.Generally, for rigid pivoted, interfere, avoid the structure that adopts three rotating supports for avoiding rotating.And all adopt flat key or spline to be connected between the cylinder 3 of horizontal screw centrifuge and the belt pulley 6 and between hydraulic motor 7 output shafts and the screwed pipe 4, gap between key and the keyway exists, make being connected of cylinder 3 and its projecting end, perfect rigidity not, in order to realize that centrifuge runs up steadily, at the projecting end of cylinder is to be provided with high speed scroll supporting 8 on the oil transportation joint 9, and guarantees that three rolling bearings 1,5,8 are in coaxial line, the oscillating quantity of centrifuge projecting end is reduced and overcomes.Rolling bearing 1,5,8 must have good lubricated and cooling condition under the operating mode of high speed rotating.Each rolling bearing is communicated with employing forced circulation fuel feeding in the present embodiment with force feed device 10 after the oil circuit parallel connection.Be applicable in the force feed device 10 of rolling bearing at this.11 is that Oil pump electrical machinery, 12 is that oil pump, 13 is that check-valves, 14 is that flow speed control valve, 15 is that overflow valve, 16 is that oil pressure gauge, 17 is that relay, 18 is that oil filter, 19 is that fuel tank, 20 is a pipeline road.

The rolling bearing generalized section of forming by rolling bearing as shown in Figure 2.This rolling bearing comprises this high speed scroll supporting of flowing through of the lubricating oil of a biserial self-aligning ball bearing 21, bearing block 22, pedestal cap 23, bearing cover 24, sealing ring 25, sealing ring end cap 26 and lubricant passage way 27, force feed device 10, and bearing 21 is lubricated and cools off.

High speed rotating device of forming by static-pressure sliding bearing as shown in Figure 3 and Figure 4 and the force feed device that is suitable for this static-pressure sliding bearing.High speed hydrostatic sliding bearing 33,34,35 is positioned at same axis, the constituting of the force feed device 36 that adapts therewith: Oil pump electrical machinery 11, oil pump 12, check valve 13, flow speed control valve 14, overflow valve 15, oil pressure gauge 16, relay 17, oil filter 18, fuel tank 19, pipeline road 20, accumulator 28, Rubber diaphragm valve 29, guiding valve 30, major axis damper 31, small damping device 32.

The static pressure sliding bearing into and out of oil circuit, after the parallel connection, be communicated with the Rubber diaphragm valve 29 and the guiding valve 30 of force feed device 36 respectively.In the fuel feeding process, pressure oil is from a, the b of Rubber diaphragm valve 29 and c, the d of guiding valve 30, through oil circuit in parallel to each static pressure sliding bearing fuel feeding.Under static load or operating mode situation, the diameter of axle that all can cause cylinder 3 because of the effect of external force such as heavy burden and driving force certain radial deflection in hydrostatic bearing, establishing side-play amount is e, the then oil film attenuation at e place, pressure increases; And corresponding opposite side gap, e place becomes big, pressure reduces, thereby the valve stamen of guiding valve 30 or the glued membrane of Rubber diaphragm valve 29 are moved to the left or to the right, then all can cause the supercharging of pressure oil because of the effect of damper 31 and 32, and diameter of axle skew is recovered, this skew is constantly carried out repeatedly with recovery, is keeping the high speed rotating device to be under the steady operating mode and is moving.

Claims

1, a kind of high speed rotating device that is used for horizontal screw centrifuge, the two ends of cylinder are installed on the two high speed rolling bearings, and this cylinder is between the screwed pipe of same axis and the inner wall of rotary drum and is provided with the rolling bearing group.Between the belt pulley of cylinder projecting end and the hydraulic motor and between hydraulic motor and the high speed oil transportation joint, end face connects and joins successively on same axis, it is characterized in that: be in the overhang high speed oil transportation joint (9) of outermost end of cylinder (3), be equipped with on its shell in order to reduce high speed scroll supporting (8) or the static pressure sliding bearing (35) of projecting end oscillating quantity, the rolling bearing (1) at this rolling bearing (8) or sliding bearing (35) and cylinder two ends, (5) or sliding bearing (33), (34) be in same axis, and each rolls or the advancing of sliding bearing, be communicated with force feed device (10) or (36) after the vent line parallel connection.