CN205918635U - Latent hydroelectric machine's shaft sealing mechanism - Google Patents

Latent hydroelectric machine's shaft sealing mechanism Download PDF

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Publication number
CN205918635U
CN205918635U CN201620720525.7U CN201620720525U CN205918635U CN 205918635 U CN205918635 U CN 205918635U CN 201620720525 U CN201620720525 U CN 201620720525U CN 205918635 U CN205918635 U CN 205918635U
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CN
China
Prior art keywords
sealing
bearing
gland
gas
shaft
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Active
Application number
CN201620720525.7U
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Chinese (zh)
Inventor
唐静
王建峰
张勇
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.)
Sub-Motor Electric Pump Co Ltd Is Contained In Hefei
Original Assignee
Sub-Motor Electric Pump Co Ltd Is Contained In Hefei
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Publication date
Application filed by Sub-Motor Electric Pump Co Ltd Is Contained In Hefei filed Critical Sub-Motor Electric Pump Co Ltd Is Contained In Hefei
Priority to CN201620720525.7U priority Critical patent/CN205918635U/en
Application granted granted Critical
Publication of CN205918635U publication Critical patent/CN205918635U/en
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Abstract

The utility model relates to a latent hydroelectric machine's shaft sealing mechanism belongs to the sealing device field, including pump case, gas -tight silo, pivot, bearing and gland, the gas -tight silo suit is between pivot and pump case to both ends and gland threaded connection, bearing Kit are in the pivot, and surface and gas -tight silo are laminated, bearing medial surface and the laminating of pivot end face of bench, and the bearing bore of bearing both sides face is equipped with third way sealing device and second way sealing device, its characterized in that respectively: the third says that sealing device and second way sealing device still include auxiliary seal spare, auxiliary seal spare is embedded in the recess of gland and pivot contact surface, the second says that the sealing device axial outside is equipped with first sealing device. Adopt the utility model discloses an after the above -mentioned structure, leakage quantity is let out in effectual reduction, has improved the stability of long -time running.

Description

A kind of shaft sealer of submersible motor
Technical field
This utility model is related to a kind of sealing device, particularly a kind of shaft sealer of submersible motor.
Background technology
Submersible motor belongs to a kind of water pump working in water, has deep-well to use with the scope of operation with two kinds.Wherein, in submersible motor The motor of wet type is very high for seal request.The sealing of conventional motors is all that simple sealing member is fixedly connected on machine Gland above, play sealing function.But the wet type motor that submersible motor uses is very big due to the pressure reduction sealing both sides, root According to formula
In formula, δ p=p2-p1The pressure differential (mpa) at mechanical seal sealing surface two ends
The relative linear velocity (m/s) of v mechanical seal pair of friction components
p1Mechanical seal end surface normal pressure (mpa)
The dynamic viscosity of ρ sealing medium
Understand, pressure reduction is big, then leakage rate is just big, seal that on high-tension side pressure is bigger, and then lead to long-term unstable Property is bigger.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of shaft sealer of submersible motor, increased first road Sealing device, decreases second and the pressure reduction of three seals device, reduces leakage rate, reduces follow-up sealing dress simultaneously The end force put, improves the stability of system operation.This utility model additionally uses rotation spindle-type sealing ring, make use of machine Tool runs the principle of sum, reduce further leakage rate.For this reason, the utility model proposes technical scheme below: a kind of submersible motor Shaft sealer, including pump case, gas-tight silo, rotating shaft, bearing and gland, gas-tight silo is set between rotating shaft and pump case, described Gas-tight silo is fixedly connected with pump case, and is threadeded with gland in two ends, and bearing is set in rotating shaft, and outer surface is pasted with gas-tight silo Close, bearing medial surface fitted with rotating shaft step end face, the bearing bore of bearing two sides is respectively equipped with three seals device and the Two road sealing devices it is characterised in that: described three seals device and the second road sealing device also include auxiliary sealing member, institute State auxiliary sealing member to be embedded in gland and the groove in shaft contacts face, described second road sealing device is axially external to be provided with first road Sealing device.
As further improvement of the utility model, described head road sealing device is sealed by mechanical seal mode.
As further improvement of the utility model, described three seals device and the second road sealing device pass through machinery Sealing means seal.
As further improvement of the utility model, described auxiliary sealing member is rotation spindle-type sealing ring.
As further improvement of the utility model, described auxiliary sealing member is abrasive rubber material.
After apparatus above of the present utility model, effectively reduce leakage rate, improve the stability of longtime running.
Brief description
With reference to the accompanying drawings and detailed description this utility model is described in further detail.
Fig. 1 show the structural representation of this utility model submersible motor.
Specific embodiment
With reference to Fig. 1, a kind of shaft sealer of submersible motor, including pump case 1, gas-tight silo 2, rotating shaft 3, bearing 4 and gland 5, gas-tight silo 2 is set between rotating shaft 3 and pump case 1, and two ends are connected with gland 5 screw thread 6, and bearing 4 is set in rotating shaft 3, Outer surface is fitted with gas-tight silo 2, and bearing medial surface is fitted with rotating shaft step end face, and the bearing bore of bearing two sides is respectively equipped with Three seals device and the second road sealing device, described three seals device and the second road sealing device pass through mechanical seal 7 Seal with 8 modes, described three seals device and the second road sealing device also include auxiliary sealing member 9 and 10, described auxiliary Sealing member 9 and 10 is embedded in gland 5 and the annular groove 11 of rotating shaft 3 contact surface, and this auxiliary sealing member 9 and 10 is rotation spindle-type Sealing ring, is abrasive rubber material, and described second road sealing device is axially external to be provided with first road sealing device, described head road sealing Device is sealed by mechanical seal 12 mode.When rotating shaft 3 rotates, auxiliary sealing member 9 and 10 plays main seal effect, rotates one After the section time, mechanical seal plays main seal effect.
Structure of the present utility model is not limited to above form.This utility model also has other embodiments, such as assists Sealing member adopts o type sealing ring, and this variation all falls within protection domain of the present utility model.

Claims (5)

1. a kind of shaft sealer of submersible motor, including pump case, gas-tight silo, rotating shaft, bearing and gland, gas-tight silo is set in and turns Between axle and pump case, and threadeded with gland in two ends, and bearing is set in rotating shaft, and outer surface is fitted with gas-tight silo, bearing Medial surface is fitted with rotating shaft step end face, and the bearing bore of bearing two sides is respectively equipped with three seals device and second sealing Device it is characterised in that: described three seals device and the second road sealing device also include auxiliary sealing member, and described auxiliary is close Sealing is embedded in gland and the groove in shaft contacts face, and described second road sealing device is axially external to be provided with first road sealing dress Put.
2. according to a kind of submersible motor described in claim 1 shaft sealer it is characterised in that: described head road sealing device Sealed by mechanical seal mode.
3. according to a kind of submersible motor described in claim 1 shaft sealer it is characterised in that: described three seals dress Put and sealed by mechanical seal mode with the second road sealing device.
4. according to a kind of submersible motor described in claim 1 shaft sealer it is characterised in that: described auxiliary sealing member For rotating spindle-type sealing ring.
5. according to a kind of submersible motor described in claim 1 or 4 shaft sealer it is characterised in that: described auxiliary is close Sealing is abrasive rubber material.
CN201620720525.7U 2016-07-08 2016-07-08 Latent hydroelectric machine's shaft sealing mechanism Active CN205918635U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620720525.7U CN205918635U (en) 2016-07-08 2016-07-08 Latent hydroelectric machine's shaft sealing mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620720525.7U CN205918635U (en) 2016-07-08 2016-07-08 Latent hydroelectric machine's shaft sealing mechanism

Publications (1)

Publication Number Publication Date
CN205918635U true CN205918635U (en) 2017-02-01

Family

ID=57874702

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620720525.7U Active CN205918635U (en) 2016-07-08 2016-07-08 Latent hydroelectric machine's shaft sealing mechanism

Country Status (1)

Country Link
CN (1) CN205918635U (en)

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