CN2568854Y - Special packaged mechanical airtight packing for electric submerged pump - Google Patents

Special packaged mechanical airtight packing for electric submerged pump Download PDF

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Publication number
CN2568854Y
CN2568854Y CN 02264229 CN02264229U CN2568854Y CN 2568854 Y CN2568854 Y CN 2568854Y CN 02264229 CN02264229 CN 02264229 CN 02264229 U CN02264229 U CN 02264229U CN 2568854 Y CN2568854 Y CN 2568854Y
Authority
CN
China
Prior art keywords
axle sleeve
airtight packing
movable ring
rotating ring
utility
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 02264229
Other languages
Chinese (zh)
Inventor
郭新
郭华
李勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUXI AIRTIGHT PACKING CO Ltd WENLING CITY
Original Assignee
LUXI AIRTIGHT PACKING CO Ltd WENLING CITY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUXI AIRTIGHT PACKING CO Ltd WENLING CITY filed Critical LUXI AIRTIGHT PACKING CO Ltd WENLING CITY
Priority to CN 02264229 priority Critical patent/CN2568854Y/en
Application granted granted Critical
Publication of CN2568854Y publication Critical patent/CN2568854Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a special packaged mechanical airtight packing for an electric submerged pump, which comprises an axle sleeve which follows an axle to rotate, a box cover which is fixedly arranged on a housing, a pressure spring, a movable ring, a static ring and an elastic airtight packing, wherein, the pressure spring is positioned in a box body which is composed of the axle sleeve and the box cover, the movable ring and the static ring mutually form an end face seal, and the elastic airtight packing is arranged between the movable ring and the axle sleeve. The utility model is characterized in that the elastic airtight packing is a rubber bellows which can be extended along an axial direction, and both ends of the rubber bellows are respectively tightly contacted with the axle sleeve and the movable ring to form the seal. The axial displacement of the movable ring is met by the self extending of the rubber bellows under the action of the spring force of the pressure spring in the process of compensation. The utility model has the advantages of strong sealing compensation capacity, little resistance and high bearing pressure.

Description

The special-purpose cartridge type mechanical sealing element of Submerged Motor Pumps
Technical field:
The utility model relates to mechanical sealing element.A kind of being applied in the machineries such as rotary pump class, stirrer, compressor of more specifically saying so stops the mechanical sealing element of rotary mechanism conveyance fluid medium along the slot leakage between turning axle and the mechanical hull.
Background technique:
Mechanical seal product and other sealing (as packing seal etc.) are compared, and many advantages are arranged, as leak few, compensation automatically, the life-span is long etc.
It is a kind of easy integrated mechanical sealing fully that Submerged Motor Pumps uses boxed formula mechanical seal, be to be used for stoping medium (water, oil) in the pump chamber etc. to enter between the stator and rotor of motor, enter because of water or oil avoiding, the serious consequence of burn-down of electric motor will be caused, but, use boxed the formula mechanical sealing element at as shown in Figure 2 Submerged Motor Pumps of the prior art, limit because of its structure to have following major defect:
1, sealing effect, poor performance, working life is short;
2, starting torque is big.Because what adopt between rotating ring 1 and axle sleeve 2 is the sealing configuration of rubber seal 3, for guaranteeing the applying of sealing surface between rotating ring 1 and the stationary ring 4, reach the effect of sealing, under the spring force effect of stage clip 5, when rotating ring 1 moves axially compensation, the rubber seal 3 that needs to drive with axle sleeve 2 interference fit (sealing) moves, surface friction drag must increase like this, therefore, needs to increase spring force, cause the friction torque of seal face big, caused electric motor starting power to strengthen;
3, unbalanced type mechanical seal can not realize the pressure balance of fluid medium.And, at an end of aqueous medium, sealing or external-mounted structure, its bearing capacity is poor.Pressure medium must not be greater than 0.3Mpa.Simultaneously, do not pushed open, must increase spring force, increased electric motor starting power equally by medium in order to guarantee sealing surface.
Summary of the invention:
Technical problem to be solved by this invention is to avoid above-mentioned existing in prior technology deficiency, provides a kind of follow-on Submerged Motor Pumps special-purpose cartridge type mechanical sealing element, and its sealing compensation ability is strong, and resistance is little, the pressure-bearing height.
The technological scheme that the utility model technical solution problem is adopted is:
The utility model comprise the axle sleeve that rotates with axle, with the lid that housing fixedly installs, be positioned at the stage clip of the box body that constitutes by axle sleeve and lid, form the rotating ring and the stationary ring of end face seal each other, and be arranged on the elastomer seal between rotating ring and the axle sleeve.
Structural feature of the present utility model is the rubber corrugated pipe of described elastomer seal for stretching vertically, and the two ends of this rubber corrugated pipe closely contact with axle sleeve and rotating ring respectively and form sealing.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the rubber seal coil structures in compared to prior art, the setting of rubber corrugated pipe in the utility model has strengthened its sealing compensation ability greatly.Be during compensation under the spring force effect of stage clip, rely on the axial displacement of satisfying rotating ring of self extending of rubber corrugated pipe, therefore, almost do not have surface friction drag in the compensation process.
2, the rubber corrugated pipe in the utility model can play the partial equilibrium effect, bears the pressure height.
3, the utility model can also be by can be with the pressing plate of stationary ring axially locating, so that mechanical seal can be born forward and reverse pressure, to improve the bearing capacity of sealing in interior all settings of lid.
The drawing explanation:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model background technique structural representation.
Embodiment:
Referring to Fig. 1, identical with prior art is, the lid 6 that present embodiment comprises the axle sleeve 2 that rotates with axle, fixedly installs with housing, be positioned at the stage clip 5 of the box body that is constituted by axle sleeve 2 and lid 6, form the rotating ring 1 and the stationary ring 4 of end face seal each other, and be arranged on the elastomer seal between rotating ring 1 and the axle sleeve 2.Improvement structure in the present embodiment is that this elastomer seal is not the rubber seal 3 in as shown in Figure 2 the prior art, but the rubber corrugated pipe 7 that can stretch vertically as shown in Figure 1, the two ends of this rubber corrugated pipe 7 closely contact with axle sleeve 2 and rotating ring 1 respectively and form sealing.In concrete the enforcement, rubber corrugated pipe 7 one ends are fixed on the periphery of axle sleeve 2 by collar 9, and the other end is pressed on the rotating ring 1 by stage clip 5 by sheath 10.During compensation, under the spring force effect of stage clip 5, rely on the axial displacement of satisfying rotating ring 1 of self extending of rubber corrugated pipe 7.
Fig. 1 illustrates, in order to improve forward and reverse bearing capacity, and promptly respectively from the forward and reverse pressure of pump chamber impeller side and motor side, in the present embodiment, can be being provided with in interior week of lid 6 with the pressing plate 8 of stationary ring 4 axially locating.In concrete the enforcement, can adopt the screw thread pressing plate.The screw thread pressing plate can carry out pretension to stationary ring, and, be not subjected to the influence of processing dimension error.

Claims (3)

1, the special-purpose cartridge type mechanical sealing element of Submerged Motor Pumps, the lid (6) that comprises the axle sleeve (2) that rotates with axle, fixedly installs with housing, be positioned at the stage clip (5) of the box body that is constituted by axle sleeve (2) and lid (6), form the rotating ring (1) and the stationary ring (4) of end face seal each other, and be arranged on elastomer seal between rotating ring (1) and the axle sleeve (2), it is characterized in that the rubber corrugated pipe (7) of described elastomer seal for stretching vertically, the two ends of this rubber corrugated pipe (7) closely contact with axle sleeve (2) and rotating ring (1) respectively and form sealing.
2, the special-purpose cartridge type mechanical sealing element of submersible pump according to claim 1 is characterized in that described rubber corrugated pipe (7) one ends are fixed on the periphery of axle sleeve (2) by collar (9), and the other end is pressed on the rotating ring (1) by stage clip (5) by sheath (10).
3, the special-purpose cartridge type mechanical sealing element of Submerged Motor Pumps according to claim 1 and 2, it is characterized in that can be with the pressing plate (8) of stationary ring (4) axially locating being provided with in interior week of described lid (6).
CN 02264229 2002-09-06 2002-09-06 Special packaged mechanical airtight packing for electric submerged pump Expired - Fee Related CN2568854Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 02264229 CN2568854Y (en) 2002-09-06 2002-09-06 Special packaged mechanical airtight packing for electric submerged pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 02264229 CN2568854Y (en) 2002-09-06 2002-09-06 Special packaged mechanical airtight packing for electric submerged pump

Publications (1)

Publication Number Publication Date
CN2568854Y true CN2568854Y (en) 2003-08-27

Family

ID=33730469

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 02264229 Expired - Fee Related CN2568854Y (en) 2002-09-06 2002-09-06 Special packaged mechanical airtight packing for electric submerged pump

Country Status (1)

Country Link
CN (1) CN2568854Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883657A (en) * 2014-03-13 2014-06-25 常熟市辛庄镇杨园宏盛塑料五金大棚配件厂 Spring with elastic sealing device
EP3325858B1 (en) * 2015-07-17 2019-08-21 EagleBurgmann Germany GmbH & Co. KG Slip-ring seal arrangement with bellows element

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883657A (en) * 2014-03-13 2014-06-25 常熟市辛庄镇杨园宏盛塑料五金大棚配件厂 Spring with elastic sealing device
EP3325858B1 (en) * 2015-07-17 2019-08-21 EagleBurgmann Germany GmbH & Co. KG Slip-ring seal arrangement with bellows element

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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