CN2076174U - External-lubricating rotary pump - Google Patents
External-lubricating rotary pump Download PDFInfo
- Publication number
- CN2076174U CN2076174U CN 90210716 CN90210716U CN2076174U CN 2076174 U CN2076174 U CN 2076174U CN 90210716 CN90210716 CN 90210716 CN 90210716 U CN90210716 U CN 90210716U CN 2076174 U CN2076174 U CN 2076174U
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- cooling
- rotary pump
- bearing
- hydraulic pressure
- pressure wheel
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- Applications Or Details Of Rotary Compressors (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an external-lubricating rotary pump which is an improvement based on an internal-lubricating rotary pump. The utility model is provided with a specially-structured sealing device, a refrigerating device and an independent lubricating system; besides, a couple of driving wheels are additionally arranged on the external-lubricating rotary pump. The structure of the external-lubricating rotary pump comprises the unilateral sealing and unilateral supporting, and the bilateral sealing and bilateral supporting; the external-lubricating rotary pump can delivery liquid with general lubricating property and liquid without lubricating property or liquid with micro-particles and foreign matter, such as water solution, ammonia, bitumen, molasses and residual oil can be delivered. The external-lubricating rotary pump is not only suitable for liquid with normal temperature but also suitable for liquid with high temperature which is equal to or lower than 250 DEG Centigrade. Compared with the internal-lubricating rotary pump, the utility model has the advantages of wide scope of application, long service life and low cost.
Description
This model utility is a kind of improved rotary pump, is applicable to the liquid of carrying unlubricated performance or containing granulometric impurity, such as the aqueous solution, gasoline, ammonia, pitch, molasses, residual oil etc., is not only applicable to normal temperature liquid, also applicable to≤250 ℃ high-temp liquid.
The existing rated pressure of China is equal to or less than the rotary pump of 2.5 MPas, the most outstanding characteristics are that bearing will lean on the liquid of conveying to lubricate on the structure, all belong to this type of as existing gear pump (KCB, 2CY) series product, lubricate rotary pump in this class pump belongs to or be gear oil pump, they only are applicable to carries the normal temperature machinery oil, is not suitable for and carries the liquid that contains granulometric impurity or unlubricated property.
The purpose of this utility model is a kind of compact structure of design, rational outer lubricated rotary pump, improves working life and reliability, enlarges Applicable scope, makes it and can carry other class I liquid I of unlubricated property again by conveying mechanism oil; Can use at normal temperatures, can under≤250 ℃ high temperature condition, use again.
Should outer lubricated rotary pump be by to the lubricated structural improvement of rotary pump in existing: designed the hydraulic pressure wheel with unique texture, independent lubricated and cooling, do not occupied the mechanical seal of axial dimension and driving wheel etc. and realize.Outer lubricated rotary pump can be divided into one-sided supporting of one-sided sealing and bilateral sealing bilateral supporting two big classes according to pressure, the kind difference of liquid.
Outer lubricated rotary pump is made up of side cover, the pump housing, bearing support, hydraulic pressure wheel, driving wheel, bearing, Sealing and coupling etc.The one-sided supporting class of the one-sided sealing active hydraulic pressure wheel of lubricated rotary pump outward has circular groove with the paraxial neck of the end face place of being taken turns by bearing support by hydrodynamic pressure, bottom land to other end face has through hole, spring is housed in the hole, nose end has screw thread, plug is equipped with at the screw thread place, and retainer ring, seal ring and rotating ring are housed in circular groove.This structure has been utilized the shared axial dimension of hydraulic pressure wheel fully.The end face that bearing contacts with rotating ring can play decides the ring effect, has so just saved the independent ring of deciding, and the bearing hole of bearing top circle and bearing support is an interference fit, saves Sealing and the Axial Mounting Part of deciding ring again.Gu this can not increase under the preceding topic of axial dimension, form mechanical seal.The liquid and the lubricant oil isolating problem that are transferred have been solved reliably.Also have the cooling bath of rectangle or the scarce shape of circle simultaneously at the bearing top circle place, flute length accounts for 1/3 to 2/3 of bearing total length.Bearing is cooled off fully.Bearing support has cooling hole corresponding to the cooling bath position." worker " font cooling hole is arranged in the cooling cover plate, and there is screw thread the center, connects the external refrigeration water pipe, around the cooling cover plate through hole is arranged, and is fixed in the bearing support both sides with screw.Constitute lubricating oil bath in the corresponding space of cooling cover plate and bearing support, can contain lubricant oil with by the dress driving wheel, as cooling water by the time, bearing and lubricant oil all can be cooled off preferably.As from the foregoing, the cooling bath of bearing, the cooling hole on the bearing support, " worker " font cooling hole in the cooling cover plate are formed a cover cooling circuit.Lubricated rotary pump has only a pair of hydraulic pressure wheel in existing, should bear the effect of isolating the high and low pressure chamber again by transmitting torque.Especially when conveying contained the liquid of granulometric impurity, hydraulic pressure wheel quick abrasion made profile of tooth lose efficacy easily, transmits unstability.Outer lubricated rotary pump has increased pair of driving wheels, has reduced the load of hydraulic pressure wheel, guaranteed that the hydraulic pressure wheel runs well synchronously, so improved pump contains granulometric impurity liquid in conveying ability.This is taken turns and is in the lubricating oil bath, and is lubricated good, thereby has increased working life.
Outer lubricated rotary pump is compared with existing interior lubricant pump, and pump structure is reasonable in design, and bearing has independent lubrication system, has changed the dry friction phenomenon that interior lubricant pump causes because of the unlubricated performance of liquid of carrying; The rotating ring of seal arrangement, spring, retainer ring, seal ring etc. all place in the hydraulic pressure wheel, and replace fixed ring with bearing face, and more compact structure is removed and guaranteed that pump chamber does not have leakage, can also guarantee to support square from minimum, make pump shaft obtain minimum amount of deflection; Cooling circuit can cooling bearing, again can cutting oil; The driving wheel that increases places lubricating oil bath, is in good lubricating status all the time, has both reduced hydraulic pressure wheel load, has reduced the wearing and tearing of self again.This pump can be carried the liquid of various states, has enlarged Applicable scope; This pump on performance and structure, taken into full account existing pump flow, pressure, power, bore, connect factors such as size, replaceability is good, can make the user replace existing pump with this pump easily; On manufacture cost, owing to adopted novel more rational project organization, easy processing, cost also can be lower than 5～10% of existing pump, its remarkable in economical benefits.
The concrete structure of outer lubricated rotary pump is drawn by following examples and accompanying drawing.
Fig. 1, Fig. 2 are the structures of the one-sided supporting of one-sided sealing of outer lubricated rotary pump.
Fig. 3 is the partial structurtes of bilateral sealing bilateral supporting.
The active hydraulic pressure of outer lubricated rotary pump is taken turns (7) and is the shaft coupling wheel by hydrodynamic pressure wheel (8), there is tooth at the wheel rim place, its profile of tooth is involute or two circular curve and other curve, and axle journal matches with bearing, and initiatively coupling, belt pulley can be installed by hydraulic pressure wheel (7) spindle nose place.Initiatively hydraulic pressure wheel (7) and the end face of being taken turns (8) close bearing support (13) by hydrodynamic pressure have circular groove (23), and bottom land to other end is evenly equipped with 2 to 9 through holes, and nose end has screw thread.Rotating ring (6), seal ring (5) and retainer ring (4) are housed in the circular groove (23), spring (3) is housed in the hole, plug (2) is equipped with at the screw thread place.Bearing (19) cylindrical has rectangle or circle to lack shape cooling bath (29), its length is 1/3rd to 2/3rds of this bearing length, match with the corresponding aperture of bearing support (13), form cooling circuit, the end face that bearing (19) contacts with rotating ring (6) can play decides the ring effect.Therefore, saved parts such as deciding ring, seal ring, retainer ring." worker " font cooling hole (27) is arranged in the cooling cover plate (26), the plate center has screw effective for connecting external refrigeration, there is through hole in plate week, and available screw (22) is loaded on bearing support (13) both sides with cooling cover plate (26), makes the space of bearing support (13) form lubricating oil bath.Pair of driving wheels (14) is housed in the lubricating oil bath, be loaded on initiatively hydraulic pressure wheel (7) and the shaft extension place of being taken turns (8) by hydrodynamic pressure respectively with pin (15), initiatively in the shaft-cup (20) packing ring (17) is housed, oil sealing (18), and be contained in the spindle nose end of the active hydraulic pressure wheel (7) of bearing support with screw (16), passive shaft-cup (21) with screw be contained in the bearing support end face be positioned at shaft-cup initiatively below.There is through hole bearing support (13) bottom surface for connecting usefulness, and bearing hole is for the dress bearing, and on the corresponding side of cooling cover plate (26) cooling hole, screw is arranged.When cooling cover plate center screw and external refrigeration pipe (25) link, cooling water can be through " worker " font cooling hole (27), and bearing support cooling hole (28) reaches the purpose of cooling bearing to bearing cooling bath (29).Also lubricant oil is cooled off simultaneously.On the pump housing (11), side cover (12) and bearing support (13) opposite position through hole and screw are arranged, available stud (1) is fitted together the pump housing, side cover.Importing and exporting has screw to import and export pipe (24) for connecting on the flange (9), screw respectively has a through hole to be fixed on the pump housing bi-side importing and exporting flange (9) with stud (10) up and down.
Fig. 3 is the part-structure of the outer lubricated rotary pump of bilateral sealing bilateral supporting.The structure of the spring (3) of the sealing configuration of spring (3 '), retainer ring (4 ') and seal ring (5 ') and rotating ring (6 ') and the one-sided sealing unilateral component bearing structure of Fig. 1, Fig. 2, retainer ring (4) and seal ring (5) and rotating ring (6) is just the same.Difference is that hydraulic pressure wheel both ends of the surface all have circular groove, can form the bilateral sealing.All there is the bearing supporting at hydraulic pressure wheel two ends, can form the bilateral supporting.It is applicable to the liquid that discharge pressure is higher.
In lubricating oil bath, inject lubricant oil, connect and import and export pipe, behind the cooling line, when initiatively hydraulic pressure wheel spindle nose place imports power and it is rotated, driving wheel with can be rotated synchronously by hydrodynamic pressure wheel, suck liquid by inlet ductwork, discharge the liquid with certain pressure by export pipeline, this pump promptly enters normal operation.
In addition attached drawing reference numeral is explained
1, studs 2, plug 3, spring
4, retainer ring 5, seal ring 6, rotating ring
7, initiatively hydraulic pressure is taken turns 8, is taken turns 9, imports and exports flange by hydrodynamic pressure
10, twin columns bolt 11, the pump housing 12, side cover
13, bearing support 14, driving wheel 15, pin
16, screw 17, packing ring 18, oil sealing
19, bearing 20, active shaft-cup 21, passive shaft-cup
22, screw 23, circular groove 24, import and export pipe
25, cooling tube 26, cooling cover plate 27, " worker " font cooling hole
28, cooling hole 29 in the bearing support, cooling bath 3 ', spring
4 ', retainer ring 5 ', seal ring 6 ', rotating ring
19 ', bearing
Claims (7)
1, a kind of improved outer lubricated rotary pump, comprise side cover, the pump housing and bearing support hydraulic pressure wheel, have independent lubrication system and cooling unit and seal arrangement, it is characterized in that having set up pair of driving wheels (14) than interior lubricated rotary pump, and driving wheel (14) places lubricating oil bath, active hydraulic pressure wheel (7) is housed in this pump housing and is taken turns (8) by hydrodynamic pressure, at its end face circular groove (23) is arranged, there is cooling bath (29) in the outer garden of bearing (19), bearing support has corresponding cooling hole (28) corresponding to the cooling bath position, " worker " shape cooling hole (27) is arranged in the cooling cover plate, the rotating ring of seal arrangement, spring, retainer ring, seal ring all places in the hydraulic pressure wheel, structurally is divided into the supporting of one-sided supporting of one-sided sealing and bilateral sealing bilateral.
2, press claim 1 described outer lubricated rotary pump, it is characterized in that active hydraulic pressure wheel (7) wherein and be shaft coupling taking turns by hydrodynamic pressure wheel (8), there is tooth at the wheel rim place, profile of tooth is involute or two gardens arc curve and other curve, axle journal matches with bearing, and initiatively coupling, belt pulley can be installed by hydraulic pressure wheel (7) spindle nose place.
3, by claim 1 and the described outer lubricated rotary pump of claim 2, it is characterized in that active hydraulic pressure wheel (7) wherein is provided with 2 to 9 through holes with bottom land to other end that is had circular groove (23) by the end face of hydrodynamic pressure wheel (8), spring is housed in the hole, nose end has screw thread, plug (2) is equipped with at the screw thread place, and rotating ring (6), seal ring (5) retainer ring (4) are housed in circular groove (23).
4, by the described outer lubricated rotary pump of claim 1, it is characterized in that the cooling bath of opening in the outer garden of bearing (19) wherein (29) is the scarce shape of rectangle or garden, flute length is about 1/3rd to 2/3rds of bearing length overall.
5, by the described outer lubricated rotary pump of claim 1, it is characterized in that there is screw thread at " worker " shape cooling hole (27) center in the cooling cover plate (26) wherein, can connect external refrigeration pipe (25), cooling cover plate (26) has through hole on every side, be fixed in bearing support (13) both sides by screw, cooling cover plate (26) constitutes lubricating oil bath with the corresponding space of bearing support (13).
6, by the described lubricated rotary pump of claim 1, it is characterized in that driving wheel (14) wherein places lubricating oil bath to be contained in initiatively hydraulic pressure wheel (7) and the shaft extension place of being taken turns (8) by hydrodynamic pressure respectively with pin (15), initiatively in the shaft-cup (20) packing ring (17) is housed, oil sealing (18), and be contained in the spindle nose end of the active hydraulic pressure wheel (7) of bearing support (13) with screw (16), passive shaft-cup (21) with screw be contained in bearing support (13) end face be positioned at shaft-cup (20) initiatively below, bearing support (13) bottom surface has through hole for connection, bearing hole is for the dress bearing, bearing support and cooling cover plate (26) have cooling hole and screw on the corresponding side, " worker " the shape cooling hole in cooling hole and the cooling cover plate and the cooling bath of bearing can form cooling circuit, screw is used for fixing cooling cover plate, and cooling cover plate (26) center screw is connected with external refrigeration pipe (25).
7, by the described outer lubricated rotary pump of claim 1, the sealing configuration that it is characterized in that spring (3), retainer ring (4) and the seal ring (5) of bilateral sealing bilateral supporting wherein and rotating ring (6) is the same with the structure of spring (3), retainer ring (4) and the seal ring (5) of one-sided sealing unilateral component bearing structure and rotating ring (6), on the hydraulic pressure wheel biend circular groove is arranged all, be the bilateral sealing, all there is the bearing supporting at hydraulic pressure wheel two ends, are the bilateral supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90210716 CN2076174U (en) | 1990-03-08 | 1990-03-08 | External-lubricating rotary pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90210716 CN2076174U (en) | 1990-03-08 | 1990-03-08 | External-lubricating rotary pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2076174U true CN2076174U (en) | 1991-05-01 |
Family
ID=4890598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90210716 Withdrawn CN2076174U (en) | 1990-03-08 | 1990-03-08 | External-lubricating rotary pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2076174U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498827A (en) * | 2008-06-05 | 2014-01-08 | 怀特驱动产品有限公司 | Hydraulic system |
-
1990
- 1990-03-08 CN CN 90210716 patent/CN2076174U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498827A (en) * | 2008-06-05 | 2014-01-08 | 怀特驱动产品有限公司 | Hydraulic system |
| CN103498827B (en) * | 2008-06-05 | 2016-09-14 | 怀特驱动产品有限公司 | Hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |