CN204299866U - Cantilever type lubrication three screw pump - Google Patents
Cantilever type lubrication three screw pump Download PDFInfo
- Publication number
- CN204299866U CN204299866U CN201420746147.0U CN201420746147U CN204299866U CN 204299866 U CN204299866 U CN 204299866U CN 201420746147 U CN201420746147 U CN 201420746147U CN 204299866 U CN204299866 U CN 204299866U
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- lining
- pump
- screw
- protecgulum
- screw rod
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Abstract
The utility model relates to a kind of cantilever type lubrication three screw pump, comprise lining, be arranged on the active screw rod in lining, driven screw and the protecgulum being arranged on lining one end, be characterised in that: the lining the other end is connected successively by fastening piece can the suction end cap of multi-angle rotary, gasket seal also forms snout cavity with lining, protecgulum and lining are located by seam and are connected by fastening piece, between protecgulum and lining, successively rolling bearing is installed, mechanical seal and outside framework oil seal, with driven screw tail end convex-concave balancing drum wedging in the middle part of active screw rod, pump inlet and pump discharge adopt to face side layout or with to side layout structure, pump inlet and pump discharge are equipped with and facilitate Pipe installing and the flange that can realize 90 ° of break-ins.Advantage is: designs simplification and firm, lightweight, installing space is little and easy to maintenance, it is flexible to import and export arrangement, low leakage is safe and reliable, the function oil system in suitable especially supporting petrochemical industry, metallurgy, power industry and all kinds of machinery.
Description
Technical field
The utility model belongs to positive displacement screw pump manufacturing technology field, particularly relates to a kind of cantilever type lubrication three screw pump.
Background technique
At present, in the various function oil systems such as petrochemical industry, metallurgy, power industry, what generally adopt is traditional three screw pump.Traditional three screw pump mostly is horizontal footing and installs, adopt steel pipe flanges connection, low-pressure balance oil return line structure and scavenger valve assembly, because component matching gap is little, cause the obstructed even blocking of medium oil return to cause internal pressure to raise and local pyrexia etc. can endanger the phenomenon that pump runs well, and cannot meet the demand of conveying high viscosity medium.Pump inlet and outlet arrangement fix and single can not 90 ° again break-in and reconfigure, structure relative complex and component are various, inertia is large, component matching gap is little, compared with high, seal leakage phenomenon, the requirement of dismounting service technique generally etc. causes that pump structure is miscellaneous, boundary dimension and weight large, import and export arrangement dumb, the large and maintenance difficult of taking up space be installed, expend that raw material are many, manufacture cost is high and the manufacture cycle long, be not suitable for batch production etc., therefore be difficult to be suitable for above-mentioned various function oil system.
Summary of the invention
The utility model for solve in known technology the technical problem that exists and provide that a kind of designs simplification, weight are lighter, installing space is little, easy to maintenance, import and export arrangement flexibly and can changable composite, low leakage and safe and reliable cantilever type lubrication three screw pump.
The technological scheme that the utility model is taked for the technical problem existed in solution known technology is:
Cantilever type lubrication three screw pump, comprise lining, be arranged on the active screw rod in lining, driven screw and the protecgulum being arranged on lining one end, it is characterized in that: the described lining the other end is connected successively by fastening piece can the suction end cap of multi-angle rotary, gasket seal also forms snout cavity with lining, described protecgulum and lining are located by seam and are connected by fastening piece, between protecgulum and lining, successively rolling bearing is installed, mechanical seal and outside framework oil seal, convex-concave balancing drum wedging was used with driven screw tail end in the middle part of described active screw rod, described pump inlet and pump discharge adopt to face side layout or with to side layout structure, described pump inlet and pump discharge are equipped with and facilitate Pipe installing and the flange that can realize 90 ° of break-ins.
The utility model can also adopt following technological scheme:
One end is provided with and snout cavity is through, the other end and the through cross scavenging hole of protecgulum in described lining.
Described protecgulum is provided with the annular oil return groove and L shape drainback passage that connect, and described L shape drainback passage top is by scavenger valve plug screw and packing ring shutoff.
Be provided with flange-shape balancing drum in the middle part of described active screw rod, described driven screw tail end is provided with recessed edge shape balancing drum, and described active screw rod forms convex-concave wedging by flange-shape balancing drum with the recessed edge shape balancing drum of the driven screw tail end be arranged symmetrically with and assembles.
The advantage that the utility model has and good effect are: because the utility model adopts technique scheme, namely the pump inlet of three screw pump and pump discharge are to face side layout or with to side layout structure, pump inlet and pump discharge arrangement may be combined with out various ways, and pump inlet and pump discharge adopt can the Flange joint of 90 ° of break-ins; The suction end cap of multi-angle rotary can meet the connecting direction that user selects import and pipeline as required, and user imports and exports arrangement without the need to predefined pump substantially, and then provides conveniently for user uses.This three screw pump designs simplification, lightweight, volume and weight are only equivalent to about 50% of traditional horizontal double-bottom foot mount type three screw pump.Lining and pump housing body overlap to be unified, and has not only simplified the component pump housing simultaneously but also reduce boundary dimension, weight reduction, reduction inertia, easy to manufacture and with short production cycle.Suck on end cap and lining two parts because pump inlet and pump discharge lay respectively at, suction end cap can not be connected if lining front end part is submerged into fuel tank and directly connects oil purifier, more simplifying after product prolongation structure.Initiatively adopts convex-concave balancing drum wedging structure both to simplify in the middle part of screw rod with driven screw tail end balance set that traditional three screw pump need configure and its back-up ring of the anterior spacing driven screw of locating stud, initiatively screw rod spacing, decrease simultaneously 30% initiatively screw rod Balance disc external diameter directly reduce manufacture needed for the specification of bar and raw materials consumption, reduction manufacture cost etc.Only the recessed edge type balancing drum of driven screw tail end need be installed on the flange-type balancing drum of initiatively screw rod, the convex-concave wedging structure of balancing drum not only spacing driven screw but also can balancing axial thrust, the reliable and assembling of structure easily.Protecgulum and Stuffing box become one, the annular oil return groove that inside connects, L shape drainback passage and the loop of spill port composition of crossing lining compare that the low-pressure balance oil return line of traditional three screw pump complexity is simple and compact for structure eliminates scavenger valve assembly simultaneously, oil return very unobstructed is made to carry high viscosity medium, avoid traditional three screw pump little due to component matching gap, cause the obstructed even blocking of medium oil return to cause internal pressure to raise and local pyrexia etc. can endanger the phenomenon that pump runs well.Arrange at mechanical seal rear portion and prevent mechanical seal external leakage and dust-proof outside framework oil seal.Therefore cantilever type lubrication three screw pump designs simplification and firmly attractive in appearance, weight is lighter, installing space is little and it is more convenient to keep in repair, import and export flexible and changeable multiple, the low-pressure pulsation capable of being combined of arrangement, low vibrating noise, low leakage and safe and reliable, be suitable for the function oil system in supporting petrochemical industry, metallurgy, power industry and all kinds of machinery especially.
Accompanying drawing explanation
Fig. 1 is plan view of the present utility model;
Fig. 2 is left view of the present utility model;
Fig. 3 is plan view of the present utility model.
In figure: 1, lining; 2, active screw rod; 3, driven screw; 4, end cap is sucked; 5, protecgulum; 6, rolling bearing; 7, mechanical seal; 8, outside framework oil seal; 9, supporting bead; 10, circlip for shaft; 11, scavenger valve plug screw; 12, packing ring; 13, gasket seal; 14, screw; 15, annular oil return groove; 16, L shape drainback passage; 17, pump inlet; 18, pump discharge; 19, flange; 20, cross scavenging hole.
Embodiment
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1-Fig. 3, cantilever type lubrication three screw pump, comprise lining 1, the active screw rod 2 be arranged in lining, driven screw 3 and be arranged on the protecgulum 5 of lining one end.The described lining the other end is connected successively by fastening piece screw 14 can the suction end cap 4 of multi-angle rotary, gasket seal 13 also forms snout cavity with lining, described protecgulum and lining are located by seam and are connected by fastening piece screw 14, between protecgulum and lining, rolling bearing 6 is installed successively, mechanical seal 7 and outside framework oil seal 8, convex-concave balancing drum wedging was used with driven screw tail end in the middle part of described active screw rod, described pump inlet 17 and pump discharge 18 adopt to face side layout or with to side layout structure, described pump inlet and pump discharge are equipped with and facilitate Pipe installing and the flange 19 that can realize 90 ° of break-ins.
In the present embodiment, be provided with one end in described lining and snout cavity is through, the other end and the through cross scavenging hole 20 of protecgulum.
Described protecgulum is provided with the annular oil return groove 15 and L shape drainback passage 16 that connect, and described L shape drainback passage top is by scavenger valve plug screw 11 and packing ring 12 shutoff.
Be provided with flange-shape balancing drum in the middle part of described active screw rod, described driven screw tail end is provided with recessed edge shape balancing drum, and described active screw rod forms convex-concave wedging by flange-shape balancing drum with the recessed edge shape balancing drum of the driven screw tail end be arranged symmetrically with and assembles.
In the present embodiment, the layout of described pump inlet 17 and pump discharge 18 can arrange multiple, enter that a left side goes out comprising the right side, a left side enter that the right side goes out, the right side goes out on entering, a left side goes out on entering, an enterprising left side goes out, the enterprising right side goes out, bottom in and top out, under enter a left side go out and under enter the forms such as the right side goes out.
In the present embodiment, describedly pump a small amount of high-pressure medium in oral cavity and infiltrate after protecgulum 5 lubricates rolling bearing 6 and mechanical seal 7 by the convex-concave balancing drum gap of initiatively screw rod 2 and driven screw 3 wedging, pump inlet chamber is flowed back in the annular oil return groove 15 connected by inner successively, L shape drainback passage 16 and the cross scavenging hole 20 of crossing lining.
In the present embodiment, described rolling bearing 6 is by pumped medium self oiling, inner ring leans on active screw rod 2 shaft shoulder and circlip for shaft 10 and supporting bead 9 to realize bilateral axial restraint, and the bearing support that outer ring is arranged by lining 1 ear end face and protecgulum 5 realizes bilateral axially locating.
In the present embodiment, described mechanical seal 7 rear portion is arranged for preventing mechanical seal external leakage and dust-proof outside framework oil seal 8.
Working principle of the present utility model is:
For carrying lubricity medium, be mainly all kinds of not containing abrasion impurity and to the non-corrosive each class lubricating oil of pumping element.When active screw rod rotates under power drive and drives the driven screw be engaged with to rotate, screw spiral section is divided into several active chambers.Along with bolt rotary, the active chamber of each spiral channel-shaped constantly from pump inlet chamber to the transfer of outlet plenum side, and makes the not Operating In Persistent Current Mode chamber volume communicated with snout cavity constantly increase, and produces imbibition, make working chamber volume be increased to maximum value, become Operating In Persistent Current Mode chamber.Move with to pump oral cavity identical along axis, form again not Operating In Persistent Current Mode chamber, its volume is constantly reduced, carries out hydraulic fluid, thus realize the continuous boosting conveying of liquid.Initiatively adopts convex-concave balancing drum wedging balancing axial thrust with driven screw tail end in the middle part of screw rod and rolling bearing leans on pumped medium self oiling.After a small amount of high-pressure medium in outlet plenum infiltrates protecgulum lubrication rolling bearing and mechanical seal by the convex-concave balancing drum gap of initiatively screw rod and driven screw wedging, the annular oil return groove connected by inner successively, L shape drainback passage and the spill port crossing lining flow back to snout cavity.
The embodiment that the utility model accompanying drawing describes is exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Claims (4)
1. a cantilever type lubrication three screw pump, comprise lining, be arranged on the active screw rod in lining, driven screw and the protecgulum being arranged on lining one end, it is characterized in that: the described lining the other end is connected successively by fastening piece can the suction end cap of multi-angle rotary, gasket seal also forms snout cavity with lining, described protecgulum and lining are located by seam and are connected by fastening piece, between protecgulum and lining, successively rolling bearing is installed, mechanical seal and outside framework oil seal, convex-concave balancing drum wedging is passed through with driven screw tail end in the middle part of described active screw rod, described pump inlet and pump discharge adopt to face side layout or with to side layout structure, described pump inlet and pump discharge are equipped with and facilitate Pipe installing and the flange that can realize 90 ° of break-ins.
2. cantilever type according to claim 1 lubrication three screw pump, is characterized in that: be provided with one end in described lining and snout cavity is through, the other end and the through cross scavenging hole of protecgulum.
3. cantilever type lubrication three screw pump according to claim 1, it is characterized in that: described protecgulum is provided with the annular oil return groove and L shape drainback passage that connect, described L shape drainback passage top is by scavenger valve plug screw and packing ring shutoff.
4. cantilever type lubrication three screw pump according to claim 1, it is characterized in that: in the middle part of described active screw rod, be provided with flange-shape balancing drum, described driven screw tail end is provided with recessed edge shape balancing drum, and described active screw rod forms convex-concave wedging by flange-shape balancing drum with the recessed edge shape balancing drum of the driven screw tail end be arranged symmetrically with and assembles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420746147.0U CN204299866U (en) | 2014-12-02 | 2014-12-02 | Cantilever type lubrication three screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420746147.0U CN204299866U (en) | 2014-12-02 | 2014-12-02 | Cantilever type lubrication three screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299866U true CN204299866U (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420746147.0U Expired - Fee Related CN204299866U (en) | 2014-12-02 | 2014-12-02 | Cantilever type lubrication three screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201857A (en) * | 2015-10-29 | 2015-12-30 | 无锡压缩机股份有限公司 | Oil jet screw air compressor exhaust end oil return structure |
| CN109083838A (en) * | 2018-07-31 | 2018-12-25 | 合肥集源穗意液压技术股份有限公司 | A kind of high-efficiency oil-return, decompression preceding lid mechanism |
-
2014
- 2014-12-02 CN CN201420746147.0U patent/CN204299866U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201857A (en) * | 2015-10-29 | 2015-12-30 | 无锡压缩机股份有限公司 | Oil jet screw air compressor exhaust end oil return structure |
| CN109083838A (en) * | 2018-07-31 | 2018-12-25 | 合肥集源穗意液压技术股份有限公司 | A kind of high-efficiency oil-return, decompression preceding lid mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20171202 |