CN203743007U - Abrasion-resistant large-displacement slurry oil pump - Google Patents

Abrasion-resistant large-displacement slurry oil pump Download PDF

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Publication number
CN203743007U
CN203743007U CN201420059863.1U CN201420059863U CN203743007U CN 203743007 U CN203743007 U CN 203743007U CN 201420059863 U CN201420059863 U CN 201420059863U CN 203743007 U CN203743007 U CN 203743007U
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China
Prior art keywords
sealing
impeller
suction
seal
wheel hub
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Active
Application number
CN201420059863.1U
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Chinese (zh)
Inventor
池庆杰
沈水钦
夏益洪
陈杰
倪秀栋
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ZHEJIANG KE'ER PUMP SHARE CO Ltd
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ZHEJIANG KE'ER PUMP SHARE CO Ltd
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Priority to CN201420059863.1U priority Critical patent/CN203743007U/en
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Abstract

The utility model discloses an abrasion-resistant large-displacement slurry oil pump. The abrasion-resistant large-displacement slurry oil pump comprises a pump cover (9), a pump body (10), a mechanical seal device (22), a bearing device (24), an inner volute (6), an impeller (7), a rotating shaft (2), a sealing body (4) and a wheel hub sealing bush (3). The position, making contact with the impeller, of the wheel hub sealing bush is provided with an annular groove (14). The gap between the longitudinal suction end sealing surface (13) of the impeller and the inner volute is smaller than the gap between the transverse suction end sealing surface (16) of the impeller and the inner volute. The annular groove is adopted for the wheel hub sealing bush, and the longitudinal (radial) end face structure is adopted for the suction end sealing surface for sealing; in this way, the slurry oil pump can operate normally and safely, the situation that various faults and halting phenomena occur due to the facts that the sealing gap of the slurry oil pump is overlarge because of abrasion, and efficiency is lowered is reduced, and working efficiency is enhanced.

Description

The large discharge capacity oil mud pump of abrasion resistant type
Technical field
The utility model relates to a kind of oil mud pump.
Background technique
Oil mud pump is one of visual plant of catalytic cracking unit fractionating system, mainly for delivery of the high temperature slurry oil that contains catalyst granules, because pumped medium (slurry oil) temperature high (360 DEG C of left and right), density are large, and contain the solid particles such as catalyzer, more than some of them catalyst granules content can reach 11 grams per liters.Because easily making catalyst solid particle rest on for a long time in seal clearance, traditional oil mud pump impeller sealing structure (for transverse end surface sealing means) cannot drain; make the horizontal suction side sealing surface of impeller often because of catalyst granules serious wear; cause the excesssive gap of sealing pair; pump efficiency is reduced and vibrate; even there are various phenomena of the failure and shut down, therefore making maintenance cost raising and the shortening in working life of oil mud pump.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, and provide a kind of safe and reliable to operation, wear resistance good, the large discharge capacity oil mud pump of abrasion resistant type simple in structure.
The purpose of this utility model realizes by following technical solution: the large discharge capacity oil mud pump of abrasion resistant type, comprise pump cover, the pump housing, mechanical seal device, bearing means, interior volute, impeller, rotating shaft, seal, wheel hub seal cartridge, on described wheel hub seal cartridge and with impeller contacting point, have ring groove, the gap between longitudinal suction side sealing surface and the interior volute of described impeller is less than the gap between horizontal suction side sealing surface and the interior volute of impeller.
Adopt after the utility model structure, because the wheel hub seal cartridge on impeller has adopted ring groove, once the catalyst solid particle of this sealing pair of flowing through can fall in this ring groove, and can not destroy the wheel hub sealing surface working surface of impeller.And the suction side sealing surface of impeller has adopted after longitudinally (radially) end-face structure sealing, the catalyst solid particle of flowing through in this sealing pair gap, also can be because the suction of suction eye compared with discharging greatly fast from sealing auxiliary air gap, the suction side sealing surface working surface of destruction impeller that therefore also can be not to a great extent.Thereby make that oil mud pump is normal, safe operation, reduced oil mud pump seal clearance and excessively made the various faults that Efficiency Decreasing occurs and shut down phenomenon because wearing and tearing, improved working efficiency.
Brief description of the drawings
Below in conjunction with drawings and the embodiments, the utility model is described in further detail.
Fig. 1 is impeller sealing arrangement mounting structure schematic diagram of the present utility model.
Fig. 2 is the enlarged diagram of wheel hub seal cartridge in Fig. 1.
Fig. 3 is the structural representation of the large discharge capacity oil mud pump of the utility model abrasion resistant type.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3 is known, the large discharge capacity oil mud pump of the utility model abrasion resistant type, comprise pump cover 9, the pump housing 10, mechanical seal device 22, bearing means 24, interior volute 6 (and interior volute cover plate 5), impeller 7, rotating shaft 2 (and axis head nut 8), seal 4, wheel hub seal cartridge 3, on described wheel hub seal cartridge 3, and there is ring groove 14 (as shown in Figure 2) with impeller 7 contacting points, gap between longitudinal suction side sealing surface 13 and the interior volute 6 of described impeller 7 is less than the gap (being longitudinal terminal surface sealing means) between horizontal suction side sealing surface 16 and the interior volute 6 of impeller 7.
Wherein: described impeller 7 is contained in rotating shaft 2 and uses axis head nut 8 being tightly placed between interior volute 6 and interior volute cover plate 5, the wheel hub seal cartridge 3 corresponding with the wheel hub sealing surface of impeller is contained on seal 4, and longitudinal suction side sealing surface 13 of described impeller 7 is by keeping certain seal clearance between assembling and positioning and the sealing surface of interior volute.Seal 4 is contained on the pump cover 9 of this oil mud pump, and interior volute 6 is contained on the pump housing 10 of this oil mud pump, and the pump housing 10 is external suction casing housing 23 again; Bearing means 24 comprises bearing rear pressing cover 17, angular contact bearing 18, bearing bracket stand 19, roller bearing 20, the front gland 21 of bearing.Described interior volute 6 (and interior volute cover plate 5), impeller 7 (and front shroud back blades 12, back shroud back blades 11), rotating shaft 2 (and axis head nut 8), seal 4, wheel hub seal cartridge 3 are configured to the impeller sealing arrangement (as shown in Figure 1) of this oil mud pump.
On described impeller 7, be provided with the wheel hub sealing surface of front shroud back blades 12 and back shroud back blades 11 and impeller and the suction port end face seal face of impeller; The wheel hub sealing surface of described impeller forms one group of sealing pair with corresponding wheel hub seal cartridge, and the suction port end face seal face of impeller forms another group sealing pair with corresponding interior volute sealing surface.The front and rear portions of impeller is provided with respectively forward and backward cover plate back blades separately, because of the effect of impeller centrifugal force, can make near the pressure at the seal ring place (forward and backward cover plate back blades root) of impeller decrease, can effectively reduce the pressure reduction of this sealing place and reach the minimizing of sealing place amount of leakage, herewith also can make sealing pair gap have larger increase, to prevent that larger particles from snapping in seal clearance place.
In the time that impeller 7 rotates, the pumped medium (slurry oil) at back shroud back blades place can be because of the effect of centrifugal force by circumferencial direction to external diffusion, but part medium still can flow to wheel hub seal clearance 1 place and suction eye seal clearance place, because the wheel hub seal cartridge 3 on impeller has adopted ring groove 14, once flow through, the solid particle of this seal clearance can fall in ring groove 14, and can not destroy the working surface of wheel hub sealing surface.Longitudinal suction side sealing surface 13 of impeller has adopted after longitudinal (radially) end face seal structure, solid particle once flow through in this sealing pair gap, can, because the suction of suction eye 15 is compared with fast solid particle being discharged from the seal clearance of suction eye greatly, therefore can not destroy the working surface of longitudinal suction side sealing surface of impeller immediately yet yet.Thereby can make that oil pump unit is normal, safe operation, effectively reduce and made the fault that Efficiency Decreasing occurs because seal clearance wearing and tearing are excessive and shut down phenomenon.

Claims (2)

1. the large discharge capacity oil mud pump of abrasion resistant type, comprise pump cover (9), the pump housing (10), mechanical seal device (22), bearing means (24), interior volute (6), impeller (7), rotating shaft (2), seal (4), wheel hub seal cartridge (3), it is characterized in that: on described wheel hub seal cartridge (3), and there is ring groove (14) with impeller (7) contacting point, gap between longitudinal suction side sealing surface (13) and the interior volute (6) of described impeller (7) is less than the gap between horizontal suction side sealing surface (16) and the interior volute (6) of impeller (7).
2. the large discharge capacity oil mud pump of abrasion resistant type according to claim 1, is characterized in that: on described impeller (7), be provided with front shroud back blades (12) and back shroud back blades (11) and impeller hub sealing surface and suction eye end face seal face; Described impeller hub sealing surface forms one group of sealing pair with corresponding wheel hub seal cartridge, and suction eye end face seal face forms another group sealing pair with corresponding interior volute sealing surface.
CN201420059863.1U 2014-01-28 2014-01-28 Abrasion-resistant large-displacement slurry oil pump Active CN203743007U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420059863.1U CN203743007U (en) 2014-01-28 2014-01-28 Abrasion-resistant large-displacement slurry oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420059863.1U CN203743007U (en) 2014-01-28 2014-01-28 Abrasion-resistant large-displacement slurry oil pump

Publications (1)

Publication Number Publication Date
CN203743007U true CN203743007U (en) 2014-07-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420059863.1U Active CN203743007U (en) 2014-01-28 2014-01-28 Abrasion-resistant large-displacement slurry oil pump

Country Status (1)

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CN (1) CN203743007U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438458A (en) * 2016-12-27 2017-02-22 安特洛(福安市)电机有限公司 Closed type and semi-open type mixed impeller structure of centrifugal pump
CN106438393A (en) * 2016-12-20 2017-02-22 合肥工业大学 Wear-resistant prefabricated pumping station
CN111472979A (en) * 2020-04-10 2020-07-31 沈阳格瑞德泵业有限公司 Double-shell cantilever type oil slurry pump with independent inner shell

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106438393A (en) * 2016-12-20 2017-02-22 合肥工业大学 Wear-resistant prefabricated pumping station
CN106438393B (en) * 2016-12-20 2019-07-30 合肥工业大学 A kind of antiwear prefabricated pumping plant
CN106438458A (en) * 2016-12-27 2017-02-22 安特洛(福安市)电机有限公司 Closed type and semi-open type mixed impeller structure of centrifugal pump
CN111472979A (en) * 2020-04-10 2020-07-31 沈阳格瑞德泵业有限公司 Double-shell cantilever type oil slurry pump with independent inner shell

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