CN205330972U - Novel single screw compressor for petrochemical industry of being convenient for change lubricating grease - Google Patents

Abstract

The utility model discloses a be convenient for change the single screw compressor for the petrochemical industry of lubricating grease, at the in -process of changing lubricating grease, the lubricating grease adhesion of avoiding being changed out is on the casing. Still form sealed cooperation through the 3rd mechanical seal device and casing including star wheel axle, star wheel axle's upper portion is passed through the bearing and is installed on the bearing frame, the bearing frame is located on the casing, the upper portion of bearing frame is equipped with the upper end cover, the lower part of bearing frame is equipped with the bottom end cover, open space no. 3 has between bottom end cover and the 3rd mechanical seal device, the front portion that is located the helicla flute of screw rod in the casing is equipped with cavity no. 1, still be equipped with the oil drain port on the casing, the oil drain port is linked together with cavity no. 1, detachably is equipped with the oil drain port end cap on the oil drain port, the rigidity that lies in on the screw rod between the two and the 2nd mechanical seal device of inner end cap has waterproof circle no. 2, be equipped with on the upper end cover and annotate the fat mouth, be equipped with the grease discharging mouth on the bottom end cover, the skirt is linked together with the grease discharging mouth, the tip of skirt stretches out space no. 3.

Description

A kind of novel petrochemical industry single screw compressor being conveniently replaceable grease

Technical field

This utility model belongs to the technical field of single screw compressor, concretely relates to a kind of novel petrochemical industry single screw compressor being conveniently replaceable grease。

Background technology

Single screw compressor includes casing, screw rod, screw shaft, free end bearing, free end shaft bearing, fixing end bearing and fixing end bearing block, the two ends of screw shaft are supported on the inner ring of free end bearing, fixing end bearing respectively, free end bearing is arranged in free end shaft bearing, fixing end bearing is arranged on fixing end bearing block, and free end shaft bearing, fixing end bearing block are installed in casing。The side of fixing end bearing block is provided with outer end cap, is provided with inner end cap on its other side, inner end cap is additionally provided with the through hole of screw shaft traverse。By outer end cap and inner end cap, fixing end bearing is encapsulated in the receiving compartment of fixing end bearing block。For avoiding grease in receiving compartment from the gap leakage between through hole and screw shaft out, the hole wall being typically employed in through hole is provided with screw thread。But, adopt this structure, it is easy to make the rainwater in the external world enter in receiving compartment。Additionally, the grease of the bearing for lubricating spider gear shaft upper end needs periodic replacement。When changing grease, clamp-oning grease by filling gun from the greasing mouth upper end cover, the grease that waste and old grease is newly injected is extrusion from row's fat mouth。Thus cause the grease changed out to stick in casing。

Summary of the invention

The purpose of this utility model is to provide a kind of novel petrochemical industry single screw compressor being conveniently replaceable grease, in the process changing grease, it is to avoid the grease being replaced out sticks in casing。

For solving above-mentioned technical problem, the purpose of this utility model is achieved in that

A kind of novel petrochemical industry single screw compressor being conveniently replaceable grease, including casing, casing is provided with the first mechanically-sealing apparatus and the second mechanically-sealing apparatus, screw shaft forms sealing by the first mechanically-sealing apparatus and the second mechanically-sealing apparatus with casing and coordinates, and the free end of screw shaft is exposed at the outside of the first mechanically-sealing apparatus and is connected with the inner ring of free end bearing, the power end of screw shaft is exposed at the outside of the second mechanically-sealing apparatus and is connected with the inner ring of fixing end bearing, fixing end bearing and free end bearing are respectively arranged in fixing end bearing block and free end shaft bearing, fixing end bearing block and free end shaft bearing are respectively arranged on the two ends of casing, the side of free end shaft bearing is provided with outer end cap one, the opposite side of free end shaft bearing is provided with inner end cap one, inner end cap one is provided with mean for the through hole one of screw shaft traverse, there is unlimited space one between inner end cap one and the first mechanically-sealing apparatus, the side of fixing end bearing block is provided with outer end cap two, the opposite side of fixing end bearing block is provided with inner end cap two, inner end cap two is provided with mean for screw shaft traverse through hole two, there is unlimited space two between inner end cap two and the second mechanically-sealing apparatus, it is fixed on the screw rod on screw shaft and two symmetrically arranged star-wheels of one-tenth are meshed, star-wheel is arranged on spider gear shaft, spider gear shaft forms sealing also by the 3rd mechanically-sealing apparatus with casing and coordinates, the top of spider gear shaft is arranged on bearing block by bearing, bearing block is located in casing, the top of bearing block is provided with upper end cover, the bottom of bearing block is provided with bottom end cover, there is unlimited space three between bottom end cover and the 3rd mechanically-sealing apparatus, the spiral fluted front portion being positioned at screw rod in casing is provided with chamber one, casing is additionally provided with oil drain out, oil drain out is connected with chamber one, oil drain out is removably provided with oil drain out plug, on screw shaft, the position between inner end cap two and the second mechanically-sealing apparatus is fixed with water proof ring two, upper end cover is provided with greasing mouth, the row's of being provided with fat mouth on bottom end cover, skirt is connected with row's fat mouth, the end protrusions space three of skirt。

On the basis of such scheme and as the preferred version of such scheme: water proof ring two and inner end cap two-phase are pressed close to。

This utility model highlights and useful having the technical effect that compared to existing technology

Petrochemical industry single screw compressor of the present utility model, guides to the outside of casing, it is to avoid grease sticks in casing in changing grease process by skirt by the grease flowed out from row's fat mouth。

Accompanying drawing explanation

Fig. 1 is sectional structure schematic diagram of the present utility model。

Fig. 2 is sectional structure schematic diagram of the present utility model。

Detailed description of the invention

This utility model is further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1 Fig. 2；

This gives a kind of novel petrochemical industry single screw compressor being conveniently replaceable grease, including casing 1, casing 1 is provided with the first mechanically-sealing apparatus 2 and the second mechanically-sealing apparatus 3, screw shaft forms sealing by the first mechanically-sealing apparatus and the second mechanically-sealing apparatus with casing 1 and coordinates, and the free end 41 of screw shaft is exposed at the outside of the first mechanically-sealing apparatus 2 and is connected with the inner ring 51 of free end bearing 5, the power end 42 of screw shaft is exposed at the outside of the second mechanically-sealing apparatus 3 and is connected with the inner ring 61 of fixing end bearing 6, fixing end bearing 6 and free end bearing 5 are respectively arranged in fixing end bearing block 7 and free end shaft bearing 8, as shown in FIG., free end shaft bearing 8 is provided with receiving compartment one, free end bearing is fixed in this receiving compartment one。Fixing end bearing block 7 is provided with receiving compartment two, and fixing end bearing is fixed in this receiving compartment two。Fixing end bearing block and free end shaft bearing are respectively arranged on the two ends of casing 1, and the screw rod 4 being fixed on screw shaft becomes symmetrically arranged star-wheel 9 to be meshed with two, and star-wheel is located on spider gear shaft 10。The side of free end shaft bearing 8 is provided with outer end cap 1, the opposite side of free end shaft bearing is provided with inner end cap 1, inner end cap one is provided with mean for the through hole one of screw shaft traverse, having unlimited space 1 between inner end cap 1 and the first mechanically-sealing apparatus 2, on screw shaft, the position between inner end cap 1 and the first mechanically-sealing apparatus 2 is fixed with water proof ring 1。Preferably, water proof ring one is pressed close to inner end cap one phase。The side of fixing end bearing block 7 is provided with outer end cap 2 15, the opposite side of fixing end bearing block is provided with inner end cap 2 16, inner end cap two is provided with mean for screw shaft traverse through hole two, having unlimited space 2 17 between inner end cap 2 16 and the second mechanically-sealing apparatus 3, on screw shaft, the position between inner end cap two and the second mechanically-sealing apparatus is fixed with water proof ring 2 18。Preferably, water proof ring two and inner end cap two-phase are pressed close to。

What this was novel is conveniently replaceable the petrochemical industry single screw compressor of grease, have employed the structure of water proof ring one, when rainy day, after rainwater is dropped on water proof ring one, the centrifugal force formed on water proof ring one is utilized to be thrown away by rainwater, it is to avoid rainwater is in screw shaft freedom of entry end bearing block。In like manner, the structure of water proof ring two is adopted, it is to avoid rainwater enters in fixing end bearing block。

Spider gear shaft forms sealing also by the 3rd mechanically-sealing apparatus with casing and coordinates。The top of spider gear shaft 10 is arranged on bearing block 20 by bearing 19。Bearing block 20 is located in casing 1。As shown in FIG., being provided with receiving compartment three on bearing block, bearing is arranged in this receiving compartment three。The top of bearing block 20 is provided with upper end cover 21, and upper end cover is covered in the top of receiving compartment。The bottom of bearing block is provided with bottom end cover 22, as shown in FIG., is provided with a through hole for spider gear shaft traverse, is encapsulated in receiving compartment three by bearing by bottom end cover on bottom end cover。There is unlimited space 3 26 between bottom end cover and the 3rd mechanically-sealing apparatus。Spacing between inner ring and the bottom end cover 22 of bearing 19 is 0.1mm。Owing to forming small-gap suture between the inner ring and bottom end cover of bearing so that be positioned at its grease therebetween, after spider gear shaft rotates, got rid of back chamber under the influence of centrifugal force, reach sealing effectiveness。Being provided with greasing mouth 23 on upper end cover, the row's of being provided with fat mouth 24 on bottom end cover, skirt 25 is connected with row's fat mouth, the end protrusions space three of skirt。

The front portion of the helicla flute 43 being positioned at screw rod 4 in casing 1 is provided with chamber 1, is additionally provided with oil drain out 29 in casing 1, and oil drain out is connected with chamber one, is removably provided with oil drain out plug on oil drain out。Generally, oil drain out plug。By arranging oil drain out and the structure of oil drain out plug, before start, can will disassemble oil drain out plug, the lubricating oil accumulated in chamber is discharged, again oil drain out plug is screwed up on oil drain out again after end, it is possible to be effectively prevented screw rod and star-wheel occurs the phenomenon of liquid hammer in the course of the work。

Above-described embodiment is only preferred embodiment of the present utility model, not limits protection domain of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection domain of the present utility model。

Claims (2)

1. the petrochemical industry single screw compressor being conveniently replaceable grease one kind novel, including casing, casing is provided with the first mechanically-sealing apparatus and the second mechanically-sealing apparatus, screw shaft forms sealing by the first mechanically-sealing apparatus and the second mechanically-sealing apparatus with casing and coordinates, and the free end of screw shaft is exposed at the outside of the first mechanically-sealing apparatus and is connected with the inner ring of free end bearing, the power end of screw shaft is exposed at the outside of the second mechanically-sealing apparatus and is connected with the inner ring of fixing end bearing, fixing end bearing and free end bearing are respectively arranged in fixing end bearing block and free end shaft bearing, fixing end bearing block and free end shaft bearing are respectively arranged on the two ends of casing, the side of free end shaft bearing is provided with outer end cap one, the opposite side of free end shaft bearing is provided with inner end cap one, inner end cap one is provided with mean for the through hole one of screw shaft traverse, there is unlimited space one between inner end cap one and the first mechanically-sealing apparatus, the side of fixing end bearing block is provided with outer end cap two, the opposite side of fixing end bearing block is provided with inner end cap two, inner end cap two is provided with mean for screw shaft traverse through hole two, there is unlimited space two between inner end cap two and the second mechanically-sealing apparatus, it is fixed on the screw rod on screw shaft and two symmetrically arranged star-wheels of one-tenth are meshed, star-wheel is arranged on spider gear shaft, spider gear shaft forms sealing also by the 3rd mechanically-sealing apparatus with casing and coordinates, the top of spider gear shaft is arranged on bearing block by bearing, bearing block is located in casing, the top of bearing block is provided with upper end cover, the bottom of bearing block is provided with bottom end cover, there is unlimited space three between bottom end cover and the 3rd mechanically-sealing apparatus, the spiral fluted front portion being positioned at screw rod in casing is provided with chamber one, casing is additionally provided with oil drain out, oil drain out is connected with chamber one, oil drain out is removably provided with oil drain out plug, it is characterized in that: on screw shaft, the position between inner end cap two and the second mechanically-sealing apparatus is fixed with water proof ring two, upper end cover is provided with greasing mouth, the row's of being provided with fat mouth on bottom end cover, skirt is connected with row's fat mouth, the end protrusions space three of skirt。

2. the novel petrochemical industry single screw compressor being conveniently replaceable grease according to claim 1, it is characterised in that: water proof ring two and inner end cap two-phase are pressed close to。