CN206681976U - A kind of self-lubricating cooling system of double-suction double screw pump - Google Patents
A kind of self-lubricating cooling system of double-suction double screw pump Download PDFInfo
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- CN206681976U CN206681976U CN201720383499.8U CN201720383499U CN206681976U CN 206681976 U CN206681976 U CN 206681976U CN 201720383499 U CN201720383499 U CN 201720383499U CN 206681976 U CN206681976 U CN 206681976U
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- impeller
- spacer
- screw shaft
- bearing
- double
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Abstract
A kind of self-lubricating cooling system of double-suction double screw pump, impeller and spacer with helical blade is added on the screw shaft between bearing and pump assembly, impeller is fixedly connected with screw shaft, and gap is left between impeller and spacer；Spacer is embedded in the hole of intermediate plate and bearing block, and positioning is choked axially through pump assembly endoporus step and bearing outer ring；Spacer both sides are provided with oil groove；The bottom surface of bearing block symmetrically respectively sets the oilhole of a threaded interface, and the bottom surface of intermediate plate symmetrically respectively sets the oilhole of a threaded interface；Gear-box bottom surface increases an oil outlet and fuel feed hole, is tightly connected on the outside of screw shaft by bearing cap；It is tightly connected on the inside of screw shaft by mechanical seal and pump assembly.Heat can all be taken away by lubricating oil caused by the utility model mechanical seal, avoid mechanical seal caused by sealing surface steep temperature rise from failing.
Description
Technical field
The utility model belongs to a kind of extraordinary double-suction double screw pump, the self-lubricating cooling more particularly to double-suction double screw pump
The improvement of system architecture.
Background technology
The range of viscosities of double entry screw pump pumped (conveying) medium is big, from the light substance liquid of low viscosity to the dense media of hyperviscosity
Liquid can meet that its conveying requires, widely should in industries such as oil, chemical industry, metallurgy, machinery, food, power station, naval vessels
With.
The main flow structural shape of double-suction double screw pump is in the market, and pump screw rod two ends part is suction chamber, screw rod
Center section is discharge chamber, at work from the two ends inspiration pumped (conveying) medium of two screw rods, the discharge conveying among screw rod
Medium.The both ends of two screw rods carry out sealing medium by mechanical seal, and mechanical seal friction generation is big in pump operation process
The heat of amount, the heat are mainly taken away by the medium of flowing, so as to realize the cooling down of mechanical seal.
The failure problems that double-suction double screw pump is easiest to occur in industrial processes are that mechanical seal failure causes leakage.
At work, rotating ring and stationary ring rub double-suction double screw pump between each other in mechanical seal, and caused heat is larger, if the heat
Amount can not be pulled away in time, and the sealing surface of rotating ring and stationary ring steep temperature rise, sealing surface can fail in a short time, cause pump to be let out
Dew.Especially following two situations when, the sealing surface of mechanical seal is easier to fail：One, the dry operating of mechanical seal, as pump group opens
Do not have to cause disconnected plug flow etc. containing substantial amounts of gas in medium inflow or pumped (conveying) medium after dynamic, be all gas around mechanical seal,
Heat caused by rotating ring and stationary ring friction can not be taken away in time, cause sealing surface to fail；Two, hyperviscosity medium is conveyed, is situated between
Matter viscosity is too high, and mobility can be very poor, it is impossible in time takes away heat caused by rotating ring and stationary ring friction, causes sealing surface to lose
Effect.
The content of the invention
The shortcomings that the purpose of this utility model is to overcome above-mentioned prior art to exist, there is provided a kind of double-suction double screw pump
Self-lubricating cooling system, it can protect mechanical seal at the dry operating of mechanical seal or conveying hyperviscosity medium, ensure screw rod
The normal use of pump.
What the purpose of this utility model was realized in.A kind of self-lubricating cooling system of double-suction double screw pump, it is special
Sign is, impeller and spacer with helical blade, impeller and spiral shell are added on the screw shaft between bearing and pump assembly
Bar axle is fixedly connected, and gap is left between impeller and spacer；Spacer is embedded in the hole of intermediate plate and bearing block, axially through pump
Body component endoporus step and bearing outer ring choke positioning；Spacer both sides are provided with oil groove；
The bottom surface of bearing block symmetrically respectively sets the oilhole of a threaded interface, and the bottom surface of intermediate plate symmetrically respectively sets one
The oilhole of threaded interface；Gear-box bottom surface one oil outlet of increase and fuel feed hole, the oilhole of oil inlet pipe one end connection bearing block,
The fuel feed hole of other end tooth connection roller box, flowline one end connect oilhole, the oil outlet of other end tooth connection roller box of intermediate plate；
It is tightly connected on the outside of screw shaft by bearing cap；Connected on the inside of screw shaft by mechanical seal and pump assembly sealing
Connect.
The extraordinary double-suction double screw pump with self-lubricating cooling system that the utility model is related to, solves double-suction double screw pump
There is mechanical seal steep temperature rise caused by disconnected plug flow or highly viscous medium during pumped (conveying) medium and the problem of fail.It is solved
Technical scheme certainly be on screw shaft, the outside of mechanical seal increase impeller and spacer, using gear-box simultaneously as fuel reserve tank,
Lubricating oil in gear-box is introduced by impeller-driven and rinses mechanical seal, heat caused by mechanical seal is taken away, by going out
Oil pipe flows back to gear-box, is radiated in gear-box, and so as to complete entirely to circulate, optimal work is provided for mechanical seal sealing surface
Environment, so as to ensure the service life of screw pump.
Brief description of the drawings
1 pump assembly, 2 intermediate plates, 3 bearing blocks, 31 oilholes, 4 mechanical seals, 5 screw shafts, 6 impellers, 61 steps, 62
Rank, 63 helical blades, 7 spacers, 71 oil grooves, 72 oil grooves, 8 bearings, 9 locking nuts, 10 gear-boxes, 101 oil outlets, 102 oil-feeds
Hole, 11 bearing caps, 12 oil inlet pipes, 13 flowlines.
Accompanying drawing 1 applies the partial cutaway schematic in double-suction double screw pump for the utility model；
Accompanying drawing 2 is the utility model structure partial enlarged drawing；
Accompanying drawing 3 is blade wheel structure schematic diagram of the present utility model；
Accompanying drawing 4 is Fig. 3 side view；
Accompanying drawing 5 is for spacer structure schematic diagram of the present utility model；
Accompanying drawing 6 is Fig. 5 right view；
Accompanying drawing 7 is Fig. 5 left view；
Accompanying drawing 8 is Fig. 5 top view；
Accompanying drawing 9 is Fig. 1 top view.
Embodiment
Implementation of the present utility model is further elaborated below in conjunction with brief description of the drawings.
The self-lubricating cooling system of a kind of double-suction double screw pump, it is characterised in that between bearing 8 and pump assembly 1
Impeller 6 and spacer 7 with helical blade 63 are added on screw shaft 5, impeller 6 is impeller with the fixed connection structure of screw shaft 5
6 are enclosed on screw shaft 5, and wherein the driving source after helical blade rotation as lubricating oil, driving lubricating oil are circulated, leaf
Take turns that 6 one end steps 62 are withstood at the step of screw shaft 5, other end step 61 withstands on the inboard of the inner ring of bearing 8 and realizes the axle of impeller
To positioning, impeller 6 and bearing 8 carry out axially position by locking nut 9；After pump startup, impeller 6 will be synchronous with screw shaft 5
Operating.
Gap is left between impeller 6 and spacer 7；Spacer 7 is embedded in the hole of intermediate plate 2 and bearing block 3, axially through pump
The endoporus step of body component 1 and the outer ring of bearing 8 choke positioning；
Two oil grooves are provided with the spacer 7, first oil groove 71 is connected with the oilhole 31 on bearing block 3, for lubrication
Oily flow channel, second oil groove 72 are connected with the oilhole 21 on intermediate plate 2, are outflow of lubrication oil passage.
The bottom surface of bearing block 3 symmetrically respectively sets the oilhole 31 of a threaded interface, and the bottom surface of intermediate plate 2 is symmetrically respectively set
The oilhole 21 of one threaded interface；The bottom surface of gear-box 10 increases an oil outlet 101 and fuel feed hole 102, the one end of oil inlet pipe 12
Oilhole 31, the fuel feed hole 102 of other end tooth connection roller box 10 of bearing block 3 are connected, the one end of flowline 13 connects the oil of intermediate plate 2
Hole 21, the oil outlet 101 of other end tooth connection roller box 10；
The outside of screw shaft 5 is tightly connected by bearing cap 11；The inner side of screw shaft 5 is close by mechanical seal 4 and pump assembly 1
Envelope connection.
The difference of the utility model and traditional structure is that the utility model adds between bearing 8 and pump assembly 1
Impeller 6 and spacer 7, bearing block 3 is connected with gear-box 10 by oil inlet pipe 12, by flowline 13 by intermediate plate 2 and gear
Case 10 connects.Enough lubricating oil is filled with before pump startup in gear-box, in pump operation process, screw rod impeller 6 rotates,
Lubricating oil flows into oil inlet pipe 12 from the fuel feed hole 102 of gear-box 10, then is flowed into by the oilhole 31 on bearing block 3 in bearing block
At impeller 6, then impeller 6 drives oil flushing mechanical seal 4, and the lubricating oil of flowing can rub mechanical seal the production of 4 wiping faces
Raw heat is taken away, and then lubricating oil is flowed out by the oilhole 21 on intermediate plate 2 and along flowline 13 by gear-box 10
Oil outlet 101 is flowed back in gear-box 10, forms whole self-lubricating cooling circulation.So there is disconnected plug flow or defeated in pump pumped (conveying) medium
When sending highly viscous medium, heat caused by mechanical seal can all be taken away by lubricating oil, so as to avoid sealing surface steep temperature rise from causing
Mechanical seal failure, so as to ensure the normal work of double-suction double screw pump.
Claims (3)
- A kind of 1. self-lubricating cooling system of double-suction double screw pump, it is characterised in that the screw rod between bearing and pump assembly Impeller and spacer with helical blade are added on axle, impeller is fixedly connected with screw shaft, between being left between impeller and spacer Gap；Spacer is embedded in the hole of intermediate plate and bearing block, and positioning is choked axially through pump assembly endoporus step and bearing outer ring； Spacer both sides are provided with oil groove；The bottom surface of bearing block symmetrically respectively sets the oilhole of a threaded interface, and the bottom surface of intermediate plate symmetrically respectively sets a band spiral shell The oilhole of line interface；Gear-box bottom surface increases an oil outlet and fuel feed hole, the oilhole of oil inlet pipe one end connection bearing block, another The fuel feed hole of tooth connection roller box is held, flowline one end connects oilhole, the oil outlet of other end tooth connection roller box of intermediate plate；It is tightly connected on the outside of screw shaft by bearing cap；It is tightly connected on the inside of screw shaft by mechanical seal and pump assembly.
- 2. according to the self-lubricating cooling system of the double-suction double screw pump described in claim 1, it is characterised in that described impeller with Screw shaft fixed connection structure is that impeller set is on screw shaft, and impeller one end step-shaped top is at the step of screw shaft, another end stand Rank withstands on the inboard of bearing inner race, impeller and bearing and carries out axially position by locking nut.
- 3. according to the self-lubricating cooling system of the double-suction double screw pump described in claim 1 or 2, it is characterised in that the spacer On be provided with two oil grooves, first oil groove is connected with the oilhole on bearing block, is lubricating oil flow channel, second oil groove with Oilhole on intermediate plate is connected, and is outflow of lubrication oil passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720383499.8U CN206681976U (en) | 2017-04-13 | 2017-04-13 | A kind of self-lubricating cooling system of double-suction double screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720383499.8U CN206681976U (en) | 2017-04-13 | 2017-04-13 | A kind of self-lubricating cooling system of double-suction double screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206681976U true CN206681976U (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720383499.8U Active CN206681976U (en) | 2017-04-13 | 2017-04-13 | A kind of self-lubricating cooling system of double-suction double screw pump |
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| CN (1) | CN206681976U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692506A (en) * | 2020-05-22 | 2020-09-22 | 中联重科股份有限公司 | Oil pump transmission connecting device and hydraulic transmission mechanical equipment |
-
2017
- 2017-04-13 CN CN201720383499.8U patent/CN206681976U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692506A (en) * | 2020-05-22 | 2020-09-22 | 中联重科股份有限公司 | Oil pump transmission connecting device and hydraulic transmission mechanical equipment |
| CN111692506B (en) * | 2020-05-22 | 2021-07-16 | 中联重科股份有限公司 | Oil pump transmission connecting device and hydraulic transmission mechanical equipment |
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