CN112178195A - Container axial double-end-face split mechanical seal - Google Patents

Container axial double-end-face split mechanical seal Download PDF

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Publication number
CN112178195A
CN112178195A CN202011071936.5A CN202011071936A CN112178195A CN 112178195 A CN112178195 A CN 112178195A CN 202011071936 A CN202011071936 A CN 202011071936A CN 112178195 A CN112178195 A CN 112178195A
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CN
China
Prior art keywords
ring
medium
split
shaft sleeve
gland
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.)
Pending
Application number
CN202011071936.5A
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Chinese (zh)
Inventor
瞿国平
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.)
Parbat Machinery Suzhou Co Ltd
Original Assignee
Parbat Machinery Suzhou Co Ltd
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 Parbat Machinery Suzhou Co Ltd filed Critical Parbat Machinery Suzhou Co Ltd
Priority to CN202011071936.5A priority Critical patent/CN112178195A/en
Publication of CN112178195A publication Critical patent/CN112178195A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3452—Pressing means the pressing force resulting from the action of a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/3448—Pressing means the pressing force resulting from fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3464—Mounting of the seal
    • F16J15/348—Pre-assembled seals, e.g. cartridge seals
    • F16J15/3484—Tandem seals

Abstract

The invention discloses an integrated axial double-end-surface split mechanical seal, which comprises: the center of the main shaft is provided with a shaft sleeve, a gland, a medium moving ring, a medium static ring, an atmosphere moving ring and an atmosphere static ring which are arranged in opposite directions, the shaft sleeve is sleeved on the main shaft, the bottom of the shaft sleeve is provided with a medium moving ring groove, the medium moving ring is fixed in the medium moving ring groove, the medium static ring is connected with the medium moving ring in a sealing mode, and the top of the medium static ring is provided with a first push ring; the top of the shaft sleeve is provided with an atmospheric rotating ring groove, the atmospheric rotating ring is fixed in the atmospheric rotating ring groove, the atmospheric static ring is hermetically connected with the atmospheric rotating ring, the bottom of the atmospheric static ring is provided with a second push ring, the gland is sleeved on the shaft sleeve, the gland is provided with a connecting step protruding inwards, a plurality of first transmission parts and a plurality of first elastic parts are arranged between the first push ring and the connecting step, and a plurality of second transmission parts and a plurality of second elastic parts are arranged between the second push ring and the connecting step. The invention has strong sealing effect and is convenient to disassemble and assemble.

Description

Container axial double-end-face split mechanical seal
Technical Field
The invention relates to a mechanical seal, in particular to an integrated axial double-end-face split mechanical seal.
Background
The main parts of the traditional mechanical seal, such as a movable ring, a static ring, a gland and a shaft sleeve, are closed circular ring bodies. In the installation, just can install other parts on the main shaft after installing mechanical seal cover on the main shaft earlier, and demolish the in-process, need remove other parts on the main shaft earlier and just can install mechanical seal cover on the main shaft, this kind of dismouting work is not only the process loaded down with trivial details, has reduced production efficiency, needs the staff to have high precision installation ability moreover.
Disclosure of Invention
The invention aims to provide a split mechanical seal for two axial end faces of a container, which is convenient to disassemble and assemble and has high sealing performance.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: container axial bi-polar face subdivision formula mechanical seal includes: the sealing device comprises a shaft sleeve, a gland, a medium movable ring, a medium static ring, an atmosphere movable ring and an atmosphere static ring, wherein the shaft sleeve, the gland, the medium movable ring, the medium static ring, the atmosphere movable ring and the atmosphere static ring are all split parts, the shaft sleeve split parts are spliced and sleeved on a main shaft, a first sealing ring is arranged between the shaft sleeve and the main shaft, a medium movable ring groove is arranged at the bottom of the shaft sleeve, the medium movable ring split parts are spliced and then fixed in the medium movable ring groove, a second sealing ring is arranged between the medium movable ring and the medium movable ring groove, the medium static ring split parts are spliced and then connected with the medium movable ring in a sealing manner, and a first push ring is arranged at the top of the medium static ring; an atmosphere rotating ring groove is formed in the top of the shaft sleeve, the atmosphere rotating ring split piece is fixed in the atmosphere rotating ring groove after being spliced, a third sealing ring is arranged between the atmosphere rotating ring and the atmosphere rotating ring groove, the atmosphere static ring split piece is connected with the atmosphere rotating ring in a sealing mode after being spliced, a second push ring is arranged at the bottom of the atmosphere static ring, and an annular cavity is reserved between the first push ring and the second push ring; the gland is split and is sleeved on the shaft sleeve after being spliced, fourth sealing rings are arranged between the gland and the medium static ring and between the gland and the atmosphere static ring, a connecting step protruding inwards is arranged on the gland, the connecting step extends into an annular cavity between the first push ring and the second push ring, movable gaps are reserved between the connecting step and the first push ring and between the connecting step and the second push ring, a plurality of first transmission parts and a plurality of first elastic parts are arranged between the first push ring and the connecting step, and a plurality of second transmission parts and a plurality of second elastic parts are arranged between the second push ring and the connecting step.
Further, the packaging axial double-end-face split mechanical seal is characterized in that the first push ring is a central split part, a plurality of step through holes and spring holes are uniformly arranged in the first push ring at intervals along the circumference, a first transmission screw penetrates through each step through hole to serve as a first transmission part, the first transmission screw extends upwards out of the first push ring and then is in threaded connection with a connecting step, a first spring is arranged in each spring hole to serve as a first elastic part, and the top end of the first spring abuts against the connecting step; the second push ring is a central split part, a plurality of step through holes and spring holes are uniformly arranged in the second push ring at intervals along the circumference, a second transmission screw penetrates through each step through hole to serve as a second transmission part, the second transmission screw downwards extends out of the second push ring and then is in threaded connection with the connecting step, a second spring is placed in each spring hole to serve as a second elastic part, and the bottom end of the second spring abuts against the connecting step.
Further, the packaging axial double-end-face split mechanical seal is characterized in that a plurality of first cylindrical pins are uniformly arranged in the medium moving ring groove at intervals along the circumference, a plurality of first cylindrical holes are uniformly arranged at the bottom of the medium moving ring at intervals along the circumference, and after the medium moving ring is placed in the medium moving ring groove, the first cylindrical pins in the medium moving ring groove respectively extend into the first cylindrical holes in the medium moving ring; a plurality of second cylindrical pins are uniformly arranged in the atmospheric rotating ring groove at intervals along the circumference, a plurality of second cylindrical holes are uniformly arranged at the top of the atmospheric rotating ring at intervals along the circumference, and after the atmospheric rotating ring is placed in the atmospheric rotating ring groove, the second cylindrical pins in the atmospheric rotating ring groove respectively extend into the second cylindrical holes in the atmospheric rotating ring.
Further, aforementioned collection dress axial double-ended face subdivision formula mechanical seal, wherein, be provided with a plurality of L shape stoppers along the even interval of circumference between axle sleeve and gland, the long portion of L shape stopper is connected with the axle sleeve through the screw, and the short portion of L shape stopper is connected with the top of gland through the screw.
Further, the axial double-end-face split mechanical seal for the container is characterized in that a shaft sleeve gasket is arranged between the shaft sleeve split pieces, a first positioning pin and a first positioning hole are arranged between the shaft sleeve split pieces, and the shaft sleeve split pieces are connected in a tightening mode through screws.
Further, the assembly axial double-end-face split mechanical seal is characterized in that a gland gasket is arranged between the gland split pieces, a second positioning pin and a second positioning hole are arranged between the gland split pieces, and the gland split pieces are in tightening connection through screws.
Further, the integrated axial double-end-face split mechanical seal is characterized in that a flat gasket is arranged at the bottom of the gland.
The invention has the advantages that: because the shaft sleeve, the gland, the medium movable ring, the medium static ring and the atmosphere movable ring and the atmosphere static ring all adopt split structures, when the mechanical seal is installed and replaced, the mechanical seal does not need to be sleeved in from the end part of the main shaft, other parts on the main shaft do not need to be detached, the workload is reduced, and the working efficiency is improved. When the split mechanical seal bears the pressure of the medium, the contact pressure between the medium moving ring and the medium static ring and between the medium moving ring and the inner static ring is increased along with the increase of the pressure of the sealed medium, and the resistance of the sealed medium flowing out of the sealing surface is improved. Additionally, an atmosphere movable ring and an atmosphere static ring which are connected in a sealing mode are arranged, so that the sealing performance and the service life of the mechanical seal can be improved, the anti-vacuumizing capacity of the mechanical seal can be improved, and the application range of the mechanical seal is widened.
Drawings
Fig. 1 is a schematic cross-sectional structural view of an integrated axial double-end-surface split mechanical seal according to the present invention.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the preferred embodiments.
As shown in fig. 1, the integrated axial double-end-surface split mechanical seal according to the present invention includes: the sealing structure comprises a shaft sleeve 1, a gland 2, a medium rotating ring 3, a medium static ring 4, an atmosphere rotating ring 5 and an atmosphere static ring 6, wherein the shaft sleeve 1, the gland 2, the medium rotating ring 3, the medium static ring 4, the atmosphere rotating ring 5 and the atmosphere static ring 6 are all central split parts, the split parts of the shaft sleeve 1 are spliced and sleeved on a main shaft 10, a first sealing ring 11 is arranged between the shaft sleeve 1 and the main shaft 10, a medium rotating ring groove 12 is arranged at the bottom of the shaft sleeve 1, a plurality of first cylindrical pins 13 are uniformly arranged in the medium rotating ring groove 12 at intervals along the circumference, a plurality of first cylindrical holes 31 are uniformly arranged at the bottom of the medium rotating ring 3 at intervals along the circumference, the split parts of the medium rotating ring 3 are spliced and placed in the medium rotating ring groove, each first cylindrical pin 13 in the medium rotating ring groove 12 respectively extends into each first cylindrical hole 31 on the medium rotating ring 3, a second sealing ring 32 is arranged between the medium rotating ring 3 and the medium rotating ring groove 12, the split part of the medium static ring 4 is connected with the medium dynamic ring 3 in a sealing way after being spliced, a first push ring 40 is arranged at the top of the medium static ring 4, and the first push ring 40 is a central split part; an atmospheric rotating ring groove 14 is formed in the top of the shaft sleeve 1, a plurality of second cylindrical pins 15 are uniformly arranged in the atmospheric rotating ring groove 14 at intervals along the circumference, a plurality of second cylindrical holes 51 are uniformly arranged in the top of the atmospheric rotating ring 5 at intervals along the circumference, split parts of the atmospheric rotating ring 5 are placed in the atmospheric rotating ring groove 14 after being split, each second cylindrical pin 15 in the atmospheric rotating ring groove 14 respectively extends into each second cylindrical hole 51 in the atmospheric rotating ring 5, a third sealing ring 52 is arranged between the atmospheric rotating ring 5 and the atmospheric rotating ring groove 15, split parts of the atmospheric stationary ring 6 are connected with the atmospheric rotating ring 5 in a sealing mode after being split, a second push ring 60 is arranged at the bottom of the atmospheric stationary ring 6, the second push ring 60 is a central split part, and an annular cavity is reserved between the first push ring 40 and the second push ring 60; the split parts of the gland 2 are sleeved on the shaft sleeve 1 after being spliced, fourth sealing rings 21 are arranged between the gland 2 and the medium static ring 4 and the atmosphere static ring 6, connecting steps 22 protruding inwards are arranged on the gland 2, the connecting steps 22 extend into an annular cavity between the first push ring 40 and the second push ring 60, movable gaps are reserved between the connecting steps 22 and the first push ring 40 and between the connecting steps 22 and the second push ring 60, a plurality of step through holes and spring holes are uniformly arranged in the first push ring 40 at intervals along the circumference, a first transmission screw 41 is arranged in each step through hole in a penetrating mode to serve as a first transmission piece, the first transmission screw 41 extends upwards out of the first push ring 40 and is in threaded connection with the connecting step 22, a first spring 42 is arranged in each spring hole to serve as a first elastic piece, the top end of the first spring 42 is abutted against the connecting step 22, a plurality of step through holes and spring holes are uniformly arranged in the second push ring 60 at intervals along the circumference, a second transmission screw 61 is arranged in each step through hole in a penetrating manner and serves as a second transmission piece, the second transmission screw 61 extends downwards out of the second push ring 60 and then is in threaded connection with the connecting step 22, a second spring 62 is arranged in each spring hole and serves as a second elastic piece, and the bottom end of the second spring 62 abuts against the connecting step 22.
In this embodiment, a plurality of L-shaped stoppers 7 are uniformly arranged between the shaft sleeve 1 and the gland 2 at intervals along the circumference, the long portion 71 of each L-shaped stopper 7 is connected with the shaft sleeve 1 through a screw, and the short portion 72 of each L-shaped stopper 7 is connected with the top of the gland 2 through a screw.
In this embodiment, a bushing gasket 16 is disposed between the split parts of the bushing 1, a first positioning pin 17 and a first positioning hole 18 are disposed between the split parts of the bushing 1, and the split parts of the bushing 1 are fastened and connected by screws. A gland gasket 23 is arranged between the split parts of the gland 2, a second positioning pin 24 and a second positioning hole 25 are arranged between the split parts of the gland 2, the split parts of the gland 2 are connected by tightening screws, and a flat gasket 26 is arranged at the bottom of the gland 2.
The invention has the advantages that: because the shaft sleeve, the gland, the medium movable ring, the medium static ring and the atmosphere movable ring and the atmosphere static ring all adopt split structures, when the mechanical seal is installed and replaced, the mechanical seal does not need to be sleeved in from the end part of the main shaft, other parts on the main shaft do not need to be detached, the workload is reduced, and the working efficiency is improved. When the split mechanical seal bears the pressure of the medium, the contact pressure between the medium moving ring and the medium static ring and between the medium moving ring and the inner static ring is increased along with the increase of the pressure of the sealed medium, and the resistance of the sealed medium flowing out of the sealing surface is improved. Additionally, an atmosphere movable ring and an atmosphere static ring which are connected in a sealing mode are arranged, so that the sealing performance and the service life of the mechanical seal can be improved, the anti-vacuumizing capacity of the mechanical seal can be improved, and the application range of the mechanical seal is widened.

Claims (7)

1. The split mechanical seal with the two axial end faces for packaging is characterized in that: the method comprises the following steps: the sealing device comprises a shaft sleeve, a gland, a medium movable ring, a medium static ring, an atmosphere movable ring and an atmosphere static ring, wherein the shaft sleeve, the gland, the medium movable ring, the medium static ring, the atmosphere movable ring and the atmosphere static ring are all split parts, the shaft sleeve split parts are spliced and sleeved on a main shaft, a first sealing ring is arranged between the shaft sleeve and the main shaft, a medium movable ring groove is arranged at the bottom of the shaft sleeve, the medium movable ring split parts are spliced and then fixed in the medium movable ring groove, a second sealing ring is arranged between the medium movable ring and the medium movable ring groove, the medium static ring split parts are spliced and then connected with the medium movable ring in a sealing manner, and a first push ring is arranged at the top of the medium static ring; an atmosphere rotating ring groove is formed in the top of the shaft sleeve, the atmosphere rotating ring split piece is fixed in the atmosphere rotating ring groove after being spliced, a third sealing ring is arranged between the atmosphere rotating ring and the atmosphere rotating ring groove, the atmosphere static ring split piece is connected with the atmosphere rotating ring in a sealing mode after being spliced, a second push ring is arranged at the bottom of the atmosphere static ring, and an annular cavity is reserved between the first push ring and the second push ring; the gland is split and is sleeved on the shaft sleeve after being spliced, fourth sealing rings are arranged between the gland and the medium static ring and between the gland and the atmosphere static ring, a connecting step protruding inwards is arranged on the gland, the connecting step extends into an annular cavity between the first push ring and the second push ring, movable gaps are reserved between the connecting step and the first push ring and between the connecting step and the second push ring, a plurality of first transmission parts and a plurality of first elastic parts are arranged between the first push ring and the connecting step, and a plurality of second transmission parts and a plurality of second elastic parts are arranged between the second push ring and the connecting step.
2. The integrated axial double-ended split mechanical seal of claim 1, wherein: the first push ring is a central split part, a plurality of step through holes and spring holes are uniformly arranged in the first push ring at intervals along the circumference, a first transmission screw penetrates through each step through hole to serve as a first transmission part, the first transmission screw extends upwards out of the first push ring and then is in threaded connection with a connecting step, a first spring is placed in each spring hole to serve as a first elastic part, and the top end of the first spring abuts against the connecting step; the second push ring is a central split part, a plurality of step through holes and spring holes are uniformly arranged in the second push ring at intervals along the circumference, a second transmission screw penetrates through each step through hole to serve as a second transmission part, the second transmission screw downwards extends out of the second push ring and then is in threaded connection with the connecting step, a second spring is placed in each spring hole to serve as a second elastic part, and the bottom end of the second spring abuts against the connecting step.
3. An integrated axial double-ended split mechanical seal according to claim 1 or 2, wherein: a plurality of first cylindrical pins are uniformly arranged in the medium moving ring groove at intervals along the circumference, a plurality of first cylindrical holes are uniformly arranged at the bottom of the medium moving ring at intervals along the circumference, and after the medium moving ring is placed in the medium moving ring groove, each first cylindrical pin in the medium moving ring groove extends into each first cylindrical hole in the medium moving ring; a plurality of second cylindrical pins are uniformly arranged in the atmospheric rotating ring groove at intervals along the circumference, a plurality of second cylindrical holes are uniformly arranged at the top of the atmospheric rotating ring at intervals along the circumference, and after the atmospheric rotating ring is placed in the atmospheric rotating ring groove, the second cylindrical pins in the atmospheric rotating ring groove respectively extend into the second cylindrical holes in the atmospheric rotating ring.
4. An integrated axial double-ended split mechanical seal according to claim 1 or 2, wherein: a plurality of L-shaped limiting blocks are uniformly arranged between the shaft sleeve and the gland at intervals along the circumference, the long parts of the L-shaped limiting blocks are connected with the shaft sleeve through screws, and the short parts of the L-shaped limiting blocks are connected with the top of the gland through screws.
5. An integrated axial double-ended split mechanical seal according to claim 1 or 2, wherein: the shaft sleeve split type bearing comprises a shaft sleeve split piece, a shaft sleeve gasket, a first positioning pin and a first positioning hole, wherein the shaft sleeve split piece is arranged between the shaft sleeve split piece, and the shaft sleeve split piece is connected with the shaft sleeve split piece in a tightening mode through screws.
6. An integrated axial double-ended split mechanical seal according to claim 1 or 2, wherein: a gland gasket is arranged between the gland split parts, a second positioning pin and a second positioning hole are arranged between the gland split parts, and the gland split parts are connected in a tightening mode through screws.
7. An integrated axial double-ended split mechanical seal according to claim 1 or 2, wherein: the bottom of the gland is provided with a flat gasket.
CN202011071936.5A 2020-10-09 2020-10-09 Container axial double-end-face split mechanical seal Pending CN112178195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011071936.5A CN112178195A (en) 2020-10-09 2020-10-09 Container axial double-end-face split mechanical seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011071936.5A CN112178195A (en) 2020-10-09 2020-10-09 Container axial double-end-face split mechanical seal

Publications (1)

Publication Number Publication Date
CN112178195A true CN112178195A (en) 2021-01-05

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ID=73948943

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011071936.5A Pending CN112178195A (en) 2020-10-09 2020-10-09 Container axial double-end-face split mechanical seal

Country Status (1)

Country Link
CN (1) CN112178195A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113028066A (en) * 2021-04-13 2021-06-25 辽宁石油化工大学 Seal assembly for main pump of nuclear power station
CN114517835A (en) * 2022-01-27 2022-05-20 重庆渝辉智能装备有限公司 Integrated double-end-face mechanical sealing structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113028066A (en) * 2021-04-13 2021-06-25 辽宁石油化工大学 Seal assembly for main pump of nuclear power station
CN114517835A (en) * 2022-01-27 2022-05-20 重庆渝辉智能装备有限公司 Integrated double-end-face mechanical sealing structure

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