CN208831263U - A kind of Wind-cooling type centrifugal pump - Google Patents

Abstract

The utility model discloses a kind of Wind-cooling type centrifugal pumps, the Wind-cooling type centrifugal pump is related to centrifugal pump field, including the pump housing, it is set to the intracorporal shaft of the pump, the bearing being set in the shaft, the outside of the shaft is circumferentially fixed with multiple flabellums, oil-filling cavity, the cold air chamber for flabellum placement and the airflow chamber between the oil-filling cavity and the cold air chamber placed for the bearing are provided in the pump housing, the junction of the cold air chamber and the airflow chamber is provided with tapered mouth, and the junction of the airflow chamber and the oil-filling cavity is provided with flaring mouth；Resulting cold wind is rotated by tapered mouth and flaring mouth flabellum to be accelerated, and resulting cold wind is rotated to flabellum by guide vane blade and carries out axial rectification, to guarantee the heat dissipation effect to bearing, the service efficiency of further structural reform centrifugal pump.

Description

A kind of Wind-cooling type centrifugal pump

Technical field

The utility model relates to centrifugal pump field, in particular to a kind of Wind-cooling type centrifugal pump.

Background technique

With the high speed development of modern industry, the promotion of product quality, the appearance of various worst hot cases makes the axis of centrifugal pump With bearing working high temperature, high pressure, high speed environment in, in the heat transfer to axis and bearing of high-temperature medium, in addition bearing is high The frictional heat of speed rotation and generation, so that the temperature rise of axis and bearing is much higher than its allows operating temperature rise range, is easy to cause axis Failure is held, the normal operation of centrifugal pump is influenced.

Authorization Notice No. is that the Chinese patent of CN206530494U discloses a kind of chemical centrifugal pump, including the pump housing, impeller, Choma, impeller nut, pump cover, filler, gland, seal member, intermediate support, O-ring seal, transverse bearing, axis, suspended portion Part, thrust bearing, bearing (ball) cover, fan, fan guard, thrust bearing right side are equipped with bearing (ball) cover, and bearing (ball) cover right side is also successively Equipped with fan and fan guard, fan and fan guard are sequentially arranged on axis.

It is in place of the deficiencies in the prior art, in the case where the blade of limited fan, degree that air-flow is clamped by blade Greatly weaken, so that the inertia of air-flow be enable to show, therefore is approximately axial in the practical mobility status of centrifugal pump interior air-flow Vortex movement and and flow through the superposition of both through-flows of blade, this flow regime will increase wind loss；Fan rotation generates Cold wind can only carry out simple air-cooled to the external of bearing when being transferred on bearing, the frictional heat of Bearing inner cannot be had Effect cooling, therefore fan is bad to the cooling effect of bearing, influences the normal operation of centrifugal pump.

Utility model content

The purpose of the utility model is to provide one kind from water-cooling type centrifugal pump, and which solve the bearings in existing centrifugal pump The bad problem of heat dissipation performance has the advantages that improve the service efficiency of centrifugal pump.

The above-mentioned technical purpose of the utility model has the technical scheme that

A kind of Wind-cooling type centrifugal pump including the pump housing, is set to the intracorporal shaft of the pump, the axis being set in the shaft Hold, the outside of the shaft is circumferentially fixed with multiple flabellums, be provided in the pump housing for the bearing place oil-filling cavity, For flabellum place cold air chamber and the airflow chamber between the oil-filling cavity and the cold air chamber, the cold air chamber with it is described The junction of airflow chamber is provided with tapered mouth, and the junction of the airflow chamber and the oil-filling cavity is provided with flaring mouth.

Using the above scheme, shaft rotation drives the flabellum rotation in shaft, and air-cooled indoor air-flow starts the cycle over flowing, Air-flow is directed in oil-filling cavity by airflow chamber by tapered mouth and flaring mouth, and final air-flow carries out wind to the indoor lubricating oil of oiling Cold, lubricating oil after cooling carries out comprehensive cooling to bearing, to extend the service life of bearing, finally improves centrifugal pump Service efficiency；When air-flow reaches tapered mouth, since the diameter of tapered mouth gradually becomes smaller, air-flow velocity is accelerated, and air-flow passes through again When flaring mouth, since the diameter of flaring mouth becomes larger, air-flow flow range is gradually expanded, when air-flow is flowed out from airflow chamber, Its flow velocity and diffusion zone are larger, and air-flow is made to be able to maintain higher axial flow velocity, further increase the service efficiency of centrifugal pump.

Further preferably are as follows: be provided in the flaring mouth guide vane inner cover being socketed on outside the shaft, it is multiple circumferentially The guide vane blade being fixed on the outer wall of guide vane inner cover and the inner wall of flaring mouth.

Using the above scheme, flow through tapered mouth air-flow it is accelerated after by between guide vane blade, between guide vane blade Chamber rectifies gas, reduces wind loss, further increases the service efficiency of centrifugal pump.

Further preferably are as follows: the guide vane blade was obliquely installed along the axial line of the shaft and along the week of the shaft To being uniformly distributed.

Using the above scheme, it flows through the fluid between guide vane blade to continue to be accelerated, and the high speed diffusion into oil-filling cavity, energy It is air-cooled to the lubricating oil progress of each section in oil-filling cavity, to guarantee the heat dissipation effect of bearing, further increase making for centrifugal pump Use efficiency.

Further preferably are as follows: the inner wall of the airflow chamber is fixed with spacer ring, on the spacer ring it is axially disposed have mutually interconnect Logical is socketed with gear on the tapered hole of the flabellum side and the flaring hole of close guide vane blade side, the shaft Ring, the baffle ring are embedded in the flaring hole, are back in the cold air chamber for limiting cold wind.

Using the above scheme, when air-flow reaches tapered hole, since tapered bore dia gradually becomes smaller, air-flow velocity is accelerated, gas When stream passes through flaring hole again, since flaring bore dia becomes larger, air-flow flow range is gradually expanded, when air-flow is flowed out from spacer ring When, flow velocity and diffusion zone are larger, and air-flow is made to be able to maintain higher flow velocity, further increase the service efficiency of centrifugal pump.

Further preferably are as follows: the radial outer wall of the baffle ring is with the baffle ring close to the connection of the axial end face of the spacer ring Place is provided with mating surface, the inner wall mutual cooperation of the mating surface and the flaring hole.

Using the above scheme, when baffle ring moves axially and is finally embedded in flaring hole with air-flow, mating surface and flaring hole Inner wall it is inconsistent and block opening, to limit the reflux of cold wind.

Further preferably are as follows: the axial end face of the guide vane inner cover is provided with annular relief, the axial end of the baffle ring Face is provided with the annular groove being embedded for the annular relief.

Using the above scheme, when cold wind is to one side reflux of cold air chamber, air-flow is forced to be tilted towards upstream when passing through guide surface It is dynamic, so that baffle ring is obtained axial lift, baffle ring is moved axially with air-flow.

Further preferably are as follows: the axial end face of the radial outer wall of the baffle ring and the baffle ring close to the guide vane blade Junction is provided with guide surface, and the guide surface is used to that the cold wind of the air-flow indoor return to be supplied to be directed to the baffle ring described In flaring hole.

Using the above scheme, when cold wind is to one side reflux of cold air chamber, air-flow is forced to be tilted towards upstream when passing through guide surface It is dynamic, so that baffle ring is obtained axial lift, baffle ring can be moved axially with air-flow and is finally embedded in flaring hole.

Further preferably are as follows: on the pump housing it is circumferentially arranged have it is multiple be located at the cold air chamber, the airflow chamber and institute State the radiation rib outside oil-filling cavity.

Using the above scheme, the thermal energy of cold air chamber, airflow chamber and oiling indoor air flow, lubricating oil and bearing passes through heat dissipation Muscle piece is transferred to outside the pump housing, further increases the service efficiency of centrifugal pump.

In conclusion the utility model has the following beneficial effects:

1. it is air-cooled to the indoor lubricating oil of oiling to drive flabellum to rotate by shaft, to carry out to the bearing in lubricating oil Comprehensive heat dissipation, to guarantee the heat dissipation effect of bearing；

2. rotating resulting cold wind by tapered mouth and flaring mouth flabellum to be accelerated, and by guide vane blade to flabellum It rotates the resulting axial rectification of cold wind progress and further increases the service efficiency of centrifugal pump to guarantee the heat dissipation effect of bearing；

3. limiting air-flow to one side reflux of flabellum by setting spacer ring and baffle ring, wind loss is reduced, to guarantee bearing Heat dissipation effect, further increase the service efficiency of centrifugal pump.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the centrifugal pump of embodiment；

Fig. 2 is the connection relationship diagram between shaft, flabellum, guidance set, guide vane, bearing and the pump housing of embodiment；

Fig. 3 is the enlarged drawing in the portion A of Fig. 2, the connection relationship for indicating baffle ring Yu guide vane inner cover.

In figure, 1, the pump housing；11, it is vortexed shell；12, oiling shell；121, air outlet；13, axle sleeve；14, fan drum； 141, air inlet；15, radiation rib；16, motor；2, shaft；21, bearing；3, oil-filling cavity；4, airflow chamber；41, tapered mouth；42, Flaring mouth；43, guide vane inner cover；431, annular relief；44, guide vane blade；5, cold air chamber；51, flabellum；6, guidance set；61, Spacer ring；611, tapered hole；612, flaring hole；62, baffle ring；621, mating surface；622, guide surface；623, annular groove.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

A kind of Wind-cooling type centrifugal pump, as depicted in figs. 1 and 2, including the pump housing 1, be set to shaft 2 in the pump housing 1, be set to turn Bearing 21 on axis 2 is set to the oil-filling cavity 3 installed in the pump housing 1 for bearing 21, multiple fans being circumferentially fixed in shaft 2 Leaf 51 is set to the cold air chamber 5 installed in the pump housing 1 for flabellum 51 and the airflow chamber 4 between oil-filling cavity 3 and cold air chamber 5, The guidance set 6 for forcing cold wind along flabellum 51 to 21 direction one-way flow of bearing is provided in airflow chamber 4.

The rotation of shaft 2 drives the flabellum 51 in shaft 2 to rotate, and air-cooled indoor air-flow starts the cycle over flowing, and air-flow passes through Airflow chamber 4 is directed to component 6 and is directed in oil-filling cavity 3, and final air-flow is air-cooled to the lubricating oil progress in oil-filling cavity 3, after cooling Lubricating oil comprehensive cooling is carried out to bearing 21.

The pump housing 1 includes vortex shell 11, the oiling shell 12 being fixed on vortex shell 11, is fixed on oiling shell 12 Axle sleeve 13, be fixed on and cover upper fan drum 14 week, the motor 16 of the rotation of drive shaft 2, cold air chamber 5 are provided on the pump housing 1 In fan drum 14, airflow chamber 4 is located in axle sleeve 13, and oil-filling cavity 3 is located in oiling shell 12；Fan drum 14, axle sleeve 13 and the outer wall of oiling shell 12 be circumferentially fixed with multiple radiation ribs 15, on fan drum 14 it is circumferentially arranged have it is multiple Air inlet 141 between radiation rib 15, on oiling shell 12 it is circumferentially arranged have it is multiple between radiation rib 15 Air outlet 121, the thermal energy of 3 interior air-flow of cold air chamber 5, airflow chamber 4 and oil-filling cavity, lubricating oil and bearing 21 passes through radiation rib 15 are transferred to outside the pump housing 1, while 1 interior air-flow of the pump housing between air inlet 141 and air outlet 121 with outside air by recycling.

Referring to Fig. 2, the junction of cold air chamber 5 and airflow chamber 4 is provided with tapered mouth 41, the connection of airflow chamber 4 and oil-filling cavity 3 Place is provided with flaring mouth 42, the guide vane inner cover 43 being socketed on outside shaft 2 is provided in flaring mouth 42, multiple be circumferentially fixed on is led The guide vane blade 44 of the inner wall of the outer wall and flaring mouth 42 of leaf inner cover 43；Guide vane inner cover 43 is in truncated cone-shaped, and guide vane inner cover 43 Outer wall is parallel with the inner wall of flaring mouth 42, and flabellum 51 and guide vane blade 44 are obliquely installed, in vortex along the axial line of shaft 2 Shape.

Guiding mechanism includes spacer ring 61, is socketed on baffle ring 62 in shaft 2 and between spacer ring 61 and guide vane inner cover 43, The opening worn for shaft 2 is provided on spacer ring 61, the internal diameter of opening is first incremented by along axial direction to successively decrease afterwards, and opening includes being interconnected 51 side of close flabellum tapered hole 611 and close to 43 side of guide vane inner cover flaring hole 612, the radial outer wall of baffle ring 62 with The junction of the axial end face of spacer ring 61 is provided with mating surface 621, mating surface 621 is mutual with the inner wall in flaring hole 612 The junction of the inclined-plane of cooperation, the radial outer wall of baffle ring 62 and the axial end face close to guide vane inner cover 43 is provided with guide surface 622 (referring to Fig. 3)；When cold wind is to 5 one side reflux of cold air chamber, air-flow is forced to tilt upward flowing when passing through guide surface 622, makes to keep off Ring 62 obtains axial lift, and baffle ring 62 is moved axially with air-flow and is finally embedded in flaring hole 612, mating surface 621 and gradually The inner wall of reaming 612 is inconsistent and blocks the reflux of opening, limitation cold wind.

Referring to Fig. 3, the axial end face of guide vane inner cover 43 is provided with annular relief 431, the axial end face setting of baffle ring 62 There is the annular groove 623 being fitted into for annular relief 431；When the fan is operating, cold wind flow on baffle ring 62, forces baffle ring 62 axial Mobile, final annular groove 623 is embedded in outside annular relief 431, to realize the support and positioning to baffle ring 62.

Working principle:

S1 starts motor 16, and shaft 2 rotates, and flabellum 51 rotates；

51 surrounding of S2 flabellum generates air-flow, and air-flow rotates resulting cold wind by tapered mouth 41 and 42 flabellum 51 of flaring mouth Accelerated, while axially being rectified by guide vane blade 44；

Then air-flow passes through guiding mechanism to 3 side one-way flow of oil-filling cavity to S3；

S4 air-flow is flow on the lubricating oil in oil-filling cavity 3, and lubricating oil is cooled, and the bearing 21 in lubricating oil is by all directions It is cooling.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but As long as within the protection scope of the present utility model all by the protection of Patent Law.

Claims (8)

1. a kind of Wind-cooling type centrifugal pump including the pump housing (1), the shaft (2) being set in the pump housing (1), is set to described turn Bearing (21) on axis (2), it is characterized in that: the outside of the shaft (2) is circumferentially fixed with multiple flabellums (51), the pump housing (1) oil-filling cavity (3) for the bearing (21) placement is provided in, for the cold air chamber (5) of flabellum (51) placement and positioned at institute State the airflow chamber (4) between oil-filling cavity (3) and the cold air chamber (5), the connection of the cold air chamber (5) and the airflow chamber (4) Place is provided with tapered mouth (41), and the junction of the airflow chamber (4) and the oil-filling cavity (3) is provided with flaring mouth (42).

2. a kind of Wind-cooling type centrifugal pump according to claim 1, it is characterized in that: being provided with socket in the flaring mouth (42) In guide vane inner cover (43), multiple outer walls for being circumferentially fixed on guide vane inner cover (43) and the flaring mouth (42) of the shaft (2) outside Inner wall on guide vane blade (44).

3. a kind of Wind-cooling type centrifugal pump according to claim 2, it is characterized in that: the guide vane blade (44) is along the shaft (2) axial line is obliquely installed and is uniformly distributed along the circumferential direction of the shaft (2).

4. a kind of Wind-cooling type centrifugal pump according to claim 2, it is characterized in that: the inner wall of the airflow chamber (4) is fixed with Spacer ring (61), it is axially disposed on the spacer ring (61) to have the interconnected tapered hole close to the flabellum (51) side (611) and on the flaring hole (612) of guide vane blade (44) side, the shaft (2) it is socketed with baffle ring (62), it is described Baffle ring (62) is embedded in the flaring hole (612), is back in the cold air chamber (5) for limiting cold wind.

5. a kind of Wind-cooling type centrifugal pump according to claim 4, it is characterized in that: the radial outer wall of the baffle ring (62) and institute It states baffle ring (62) to be provided with mating surface (621) close to the junction of the axial end face of the spacer ring (61), the mating surface (621) It cooperates with the inner wall of the flaring hole (612).

6. a kind of Wind-cooling type centrifugal pump according to claim 5, it is characterized in that: the axial end face of the guide vane inner cover (43) It is provided with annular relief (431), the axial end face of the baffle ring (62), which is provided with, supplies the annular relief (431) to be embedded Annular groove (623).

7. a kind of Wind-cooling type centrifugal pump according to claim 6, it is characterized in that: the radial outer wall of the baffle ring (62) and institute It states baffle ring (62) and the junction of the axial end face of the guide vane blade (44) is provided with guide surface (622), the guide surface (622) baffle ring (62) is directed in the flaring hole (612) for the cold wind for flowing back in the airflow chamber (4).

8. a kind of Wind-cooling type centrifugal pump according to claim 1, it is characterized in that: circumferentially arranged on the pump housing (1) have It is multiple to be located at the cold air chamber (5), the radiation rib (15) of the airflow chamber (4) and the oil-filling cavity (3) outside.