CN213628860U - Shaft seal device for complete split pump - Google Patents
Shaft seal device for complete split pump Download PDFInfo
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- CN213628860U CN213628860U CN202022373487.1U CN202022373487U CN213628860U CN 213628860 U CN213628860 U CN 213628860U CN 202022373487 U CN202022373487 U CN 202022373487U CN 213628860 U CN213628860 U CN 213628860U
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- split
- ring
- gland
- split type
- sealing
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Abstract
The utility model discloses a shaft seal device for a complete split pump, which comprises a split shaft sleeve, a first split sealing ring is arranged between the split shaft sleeve and a shaft, a split annular bulge part with a movable ring caulking groove is formed at the periphery of the split shaft sleeve, a split type movable ring is embedded in the movable ring embedding groove, a second split type sealing ring is arranged between the split type movable ring and the split type shaft sleeve, a split gland is sleeved outside the split shaft sleeve, a split push ring is arranged between the split gland and the split shaft sleeve, a split static ring is arranged between the split push ring and the split movable ring, a positioning groove is arranged on the inner circumferential surface of the split gland at the split static ring, a third split sealing ring is embedded in the positioning groove, a spring is arranged between the split push ring and the split gland, under the action of the elastic force of the spring, the split push ring can push the split stationary ring to contact with the split movable ring rotating along with the shaft in a sealing manner all the time. The utility model has the advantages of convenient disassembly and assembly.
Description
Technical Field
The utility model relates to a pump shaft seal equipment technical field, concretely relates to complete subdivision formula shaft seal device for pump.
Background
The pump is an important device in the industries of petrochemical industry and the like, and is one of main production devices of the whole chemical process flow. The shaft seal device is one of the most frequent parts of the pump and even the whole process flow which possibly have faults; the shaft seal device is also provided with a bearing, a reducer, a motor and other end fittings. Once the shaft seal device breaks down and needs to be overhauled, shaft end fittings such as a bearing, a speed reducer, a motor and the like above the shaft seal device must be firstly dismantled, so that the disassembly is very troublesome, the maintenance period is long, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a complete subdivision formula pump shaft seal device of convenient is changed in dismouting.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the shaft seal device for the complete split pump comprises a split shaft sleeve fixedly sleeved on a shaft, a first split sealing ring used for sealing a gap between the split shaft sleeve and the shaft is arranged between the split shaft sleeve and the shaft, the periphery of the split shaft sleeve outwards protrudes to form a split annular protruding part, a movable ring embedding groove is arranged on the end surface of the split annular protruding part close to the atmosphere side, a split movable ring is embedded in the movable ring embedding groove, a second split sealing ring used for sealing the gap between the split movable ring and the split shaft sleeve is arranged between the split movable ring and the split shaft sleeve, a split gland connected and fixed with a pump body is sleeved outside the split shaft sleeve, a split gland gasket used for sealing the gap between the split gland and the pump body is arranged on the end surface of the split gland close to the equipment side, a split push ring opposite to the split movable ring is arranged between the split gland and the split shaft sleeve, the split type push ring is connected with the split type gland through a guide mechanism, the split type push ring can move axially relative to the split type gland through the guide mechanism and cannot rotate relative to the split type gland, a split type static ring is arranged between the split type push ring and the split type movable ring, a positioning groove is formed in the inner circumferential surface of the split type gland at the position of the split type static ring, a third split type sealing ring used for sealing a gap between the split type static ring and the split type gland is embedded in the positioning groove, a spring is arranged between the split type push ring and the split type gland, and under the elastic force action of the spring, the split type push ring can push the split type static ring to contact with the split type movable ring which is sealed to rotate along with the shaft all the time.
Further, the shaft sealing device for a fully split pump described above, wherein: the structure of the guide mechanism comprises: the split type push ring is provided with a plurality of stepped guide through holes which axially penetrate through the split type push ring and the large-caliber end faces the split type stationary ring along the circumferential direction, the end part of the split type gland close to the atmosphere side is provided with a plurality of threaded holes along the circumferential direction, the guide through holes correspond to the threaded holes one by one, each pair of corresponding guide through holes and each threaded hole are respectively provided with a guide limit screw, the head of each guide limit screw is positioned at the large-caliber end of the guide through hole, the screw rod of each guide limit screw extends out from the small-caliber end of the guide through hole and is in threaded connection with the corresponding threaded hole, the split type push ring can axially move relative to the split type gland and cannot rotate relative to the split type gland through the mutual matching of the guide limit screw, the guide through hole and the threaded hole, and when the guide limit screw is screwed into the threaded hole from the guide through hole until the head of the guide limit screw, and the guide limit screw can drive the split push ring to move towards the end part of the split gland on the near-atmosphere side along with the continuous screwing of the guide limit screw into the threaded hole, so that the split push ring can pre-compress the spring positioned between the split push ring and the end part of the split gland.
Further, the shaft sealing device for a fully split pump described above, wherein: the concrete structure of subdivision formula gland includes: annular gland body, gland body have two and dissect the branch department, make gland body subdivision for a pair of semi-ring gland that closes mutually, are provided with corresponding locking screw hole on two subdivision joint end faces of every dissection of gland body respectively, wear to be equipped with an anti-drop bolt in every to the locking screw hole that corresponds respectively, and the structure of every anti-drop bolt includes: nut and fixed connection are in the check lock lever on the nut, the external diameter of check lock lever is less than the internal diameter of locking screw hole, be provided with the locking head at the check lock lever tip of keeping away from the nut, be provided with in the outside of locking head can with the internal thread looks screw thread fit's of locking screw hole external screw thread, corresponding locking screw hole on the locking screw hole of a semi-ring gland is screwed out and the complete screw in is covered to another semi-ring gland when the locking head of anti-drop bolt, until the nut of anti-drop bolt is tight when corresponding semi-ring gland, the anti-drop bolt can close the locking relatively and fix annular gland body with two semi-ring glands.
Further, the shaft sealing device for a fully split pump described above, wherein: and each split part of the split gland is respectively provided with a first sealing gasket for sealing between two split joint end surfaces of the split part.
Further, the shaft sealing device for a fully split pump described above, wherein: and each split part of the split shaft sleeve is respectively provided with a second sealing gasket for sealing between two split joint end surfaces of the split part.
Through the implementation of the above technical scheme, the beneficial effects of the utility model are that: (1) each part in the shaft seal device adopts a split structure, so that the shaft seal device is very convenient to disassemble and assemble, the shaft seal device is replaced under the condition that all shaft end matching pieces above the shaft seal device are not disassembled, the maintenance period is greatly shortened, the maintenance cost is reduced, and the maintenance efficiency is improved; (2) in the assembling process, the split type push ring is driven to pre-compress the spring by adjusting the guide limit screw, so that the movable parts such as the split type shaft sleeve and the split type movable ring which rotate along with the shaft can be easily and smoothly placed into the split type gland, the installation is more convenient, and the assembling efficiency is improved; (3) the anti-falling bolt on the split gland is designed, so that the anti-falling bolt can be effectively prevented from being loosened and falling in the process of assembling the split gland, and the assembly efficiency is improved; (4) the third split type sealing ring for sealing the gap between the split type static ring and the split type gland is arranged in the positioning groove on the inner peripheral surface of the split type gland, so that the third split type sealing ring can be prevented from changing position due to the relation of pumping pressure in the pump, and the use stability is ensured.
Drawings
Fig. 1 is a schematic structural view of a shaft seal device for a fully split pump according to the present invention.
Fig. 2 is an enlarged schematic view of a portion a shown in fig. 1.
Fig. 3 is a schematic structural view of fig. 1 with a third split seal ring and a guide limit screw hidden.
Fig. 4 is an enlarged schematic view of a portion B shown in fig. 1.
Fig. 5 is a schematic structural view of the split type gland in the left side view direction of fig. 1.
Fig. 6 is an enlarged schematic view of a portion C shown in fig. 5.
Fig. 7 is a schematic structural view of fig. 6 with the anti-drop bolt hidden.
Fig. 8 is a structural view of the anti-drop bolt shown in fig. 5.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, the shaft seal device for a complete split pump includes a split shaft sleeve 2 fixedly fitted to a shaft 1, a first split seal ring 3 provided between the split shaft sleeve 2 and the shaft 1 for sealing a gap therebetween, a split annular protrusion 4 formed by protruding an outer periphery of the split shaft sleeve 2 outward, a split ring insert groove provided on an end surface of the split annular protrusion 4 near an atmospheric side, a split movable ring 5 fitted in the split ring insert groove, a second split seal ring 6 provided between the split movable ring 5 and the split shaft sleeve 2 for sealing a gap therebetween, the second split seal ring 6 transmitting rotation of the split shaft sleeve 2 rotating with the shaft 1 to the split movable ring 5 so that the split movable ring 5 and the split shaft sleeve 2 rotate together with the shaft 1 in synchronization, a split gland 7 connected and fixed with the pump body is sleeved outside the split shaft sleeve 2, a radial gap is left between the split gland 7 and the split shaft sleeve 2, a split gland gasket 12 for sealing the gap between the split gland 7 and the pump body is arranged on the end surface of the split gland 7 near the equipment side, a split push ring 8 facing the split moving ring 5 is arranged between the split gland 7 and the split shaft sleeve 2, a radial gap is left between the split push ring 8 and the split shaft sleeve 2, the split push ring 8 is connected with the split gland 7 through a guide mechanism, the split push ring 8 can axially move relative to the split gland 7 and can not rotate relative to the split gland 7 through the guide mechanism, a split stationary ring 9 is arranged between the split push ring 7 and the split moving ring 5, a radial gap is left between the split stationary ring 9 and the split shaft sleeve 2, a positioning groove 10 is arranged on the inner peripheral surface of the split gland 7 at the split static ring 9, a third split sealing ring 11 for sealing a gap between the split static ring 9 and the split gland 7 is embedded in the positioning groove 10, a spring 13 is arranged between the split push ring 8 and the end part of the split gland 7, and the split push ring 8 can push the split static ring 9 to be always in contact with the split movable ring 5 rotating along with the shaft 1 under the elastic force action of the spring 13;
in this embodiment, the structure of the guide mechanism includes: a plurality of stepped guide through holes 14 axially penetrating the split push ring 8 and having a large diameter end facing the split stationary ring 9 are circumferentially arranged on the split push ring 8, a plurality of threaded holes 15 are circumferentially arranged at the end of the split gland 7 near the atmosphere side, the guide through holes 14 are in one-to-one correspondence with the threaded holes 15, a guide limit screw 16 is respectively arranged in each pair of the corresponding guide through hole 14 and the corresponding threaded hole 15, the head of each guide limit screw 16 is positioned at the large diameter end of the guide through hole 14, the screw rod of each guide limit screw 16 extends out from the small diameter end of the guide through hole 14 and is in threaded connection with the corresponding threaded hole 15, the split push ring 8 can axially move relative to the split gland 7 and cannot rotate relative to the split gland 7 through the mutual cooperation of the guide limit screw 16, the guide through hole 14 and the threaded hole 15, and when the guide limit screw 16 is screwed into the threaded hole 15 from the guide through hole 14, When the head of the guide mechanism abuts against the step surface of the guide through hole 14, the guide limiting screw 16 is continuously screwed into the threaded hole 15, and the guide limiting screw 16 can drive the split type push ring 8 to move towards the end part of the split type gland close to the atmosphere side, so that the split type push ring 8 can pre-compress the spring 13 between the split type push ring 8 and the end part of the split type gland 7, the guide mechanism is simple in structure and convenient to install and maintain, and when the guide mechanism is assembled, the spring 13 is pre-compressed through the split type push ring 8, so that the split type shaft sleeve, the split type movable ring and other movable parts rotating along with the shaft can be easily and smoothly placed into the split type gland, and the installation is more convenient;
in the present embodiment, the specific structure of the split cover 7 includes: annular gland body, gland body have two sections departments, make the gland body subdivision be a pair of semi-ring gland 71 that closes mutually, are provided with corresponding locking screw hole 72 on two subdivision joint terminal surfaces of every section department of gland body 71 respectively, wear to be equipped with an anti-drop bolt 73 in every to corresponding locking screw hole 72 respectively, and every anti-drop bolt 73's structure includes: the split gland is simple in structure and convenient to assemble, the anti-falling bolt cannot be loosened in the assembling process, and the assembling efficiency is improved; in this embodiment, each split part of the split gland 7 is respectively provided with a first sealing gasket 17 for sealing between two split joint end surfaces of the split part, and each split part of the split shaft sleeve 2 is respectively provided with a second sealing gasket 18 for sealing between two split joint end surfaces of the split part, so that the shaft seal effect can be better ensured through the first sealing gasket 17 and the second sealing gasket 18, and the sealing performance is improved;
when the split type sealing device is used, under the elastic force action of the spring 13, the split type push ring 8 can push the split type static ring 9 to be always in contact with and seal the split type movable ring 5 rotating along with the shaft 1, and effective sealing of the shaft end of the pump is achieved through the common matching of the first split type sealing ring 3, the second split type sealing ring 6, the third split type sealing ring 11 and the split type gland gasket 12.
The utility model has the advantages that: (1) each part in the shaft seal device adopts a split structure, so that the shaft seal device is very convenient to disassemble and assemble, the shaft seal device is replaced under the condition that all shaft end matching pieces above the shaft seal device are not disassembled, the maintenance period is greatly shortened, the maintenance cost is reduced, and the maintenance efficiency is improved; (2) in the assembling process, the split type push ring is driven to pre-compress the spring by adjusting the guide limit screw, so that the movable parts such as the split type shaft sleeve and the split type movable ring which rotate along with the shaft can be easily and smoothly placed into the split type gland, the installation is more convenient, and the assembling efficiency is improved; (3) the anti-falling bolt on the split gland is designed, so that the anti-falling bolt can be effectively prevented from being loosened and falling in the process of assembling the split gland, and the assembly efficiency is improved; (4) the third split type sealing ring for sealing the gap between the split type static ring and the split type gland is arranged in the positioning groove on the inner peripheral surface of the split type gland, so that the third split type sealing ring can be prevented from changing position due to the relation of pumping pressure in the pump, and the use stability is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications or equivalent changes made in accordance with the technical spirit of the present invention are also within the scope of the present invention.
Claims (5)
1. Complete subdivision formula shaft seal device for pump which characterized in that: comprises a split shaft sleeve fixedly sleeved on a shaft, a first split sealing ring used for sealing a gap between the split shaft sleeve and the shaft is arranged between the split shaft sleeve and the shaft, the periphery of the split shaft sleeve outwards protrudes to form a split annular protruding part, a movable ring caulking groove is arranged on the end surface of the split annular protruding part close to the atmosphere side, a split movable ring is embedded in the movable ring caulking groove, a second split sealing ring used for sealing the gap between the split movable ring and the split shaft sleeve is arranged between the split movable ring and the split shaft sleeve, a split gland connected and fixed with a pump body is sleeved outside the split shaft sleeve, a split gland gasket used for sealing the gap between the split gland and the split pump body is arranged on the end surface of the split gland close to the equipment side, a split push ring opposite to the split movable ring is arranged between the split gland and the split shaft sleeve, and the split push ring is connected with the split gland through a guide mechanism, the split type push ring can move axially relative to the split type gland through the guide mechanism and cannot rotate relative to the split type gland, a split type static ring is arranged between the split type push ring and the split type movable ring, a positioning groove is formed in the inner circumferential surface of the split type gland at the position of the split type static ring, a third split type sealing ring used for sealing a gap between the split type static ring and the split type gland is embedded in the positioning groove, a spring is arranged between the split type push ring and the split type gland, and the split type push ring can push the split type static ring to contact with the split type movable ring rotating along with the shaft in a sealing mode all the time under the elastic force action of the spring.
2. The shaft sealing device for a full split pump according to claim 1, wherein: the structure of the guide mechanism comprises: the split type push ring is provided with a plurality of stepped guide through holes which axially penetrate through the split type push ring and the large-caliber end faces the split type stationary ring along the circumferential direction, the end part of the split type gland close to the atmosphere side is provided with a plurality of threaded holes along the circumferential direction, the guide through holes correspond to the threaded holes one by one, each pair of corresponding guide through holes and each threaded hole are respectively provided with a guide limit screw, the head of each guide limit screw is positioned at the large-caliber end of the guide through hole, the screw rod of each guide limit screw extends out from the small-caliber end of the guide through hole and is in threaded connection with the corresponding threaded hole, the split type push ring can axially move relative to the split type gland and cannot rotate relative to the split type gland through the mutual matching of the guide limit screw, the guide through hole and the threaded hole, and when the guide limit screw is screwed into the threaded hole from the guide through hole until the head of the guide limit screw, and the guide limit screw can drive the split push ring to move towards the end part of the split gland on the near-atmosphere side along with the continuous screwing of the guide limit screw into the threaded hole, so that the split push ring can pre-compress the spring positioned between the split push ring and the end part of the split gland.
3. The shaft sealing device for a full split pump according to claim 1, wherein: the concrete structure of subdivision formula gland includes: annular gland body, gland body have two and dissect the branch department, make gland body subdivision for a pair of semi-ring gland that closes mutually, are provided with corresponding locking screw hole on two subdivision joint end faces of every dissection of gland body respectively, wear to be equipped with an anti-drop bolt in every to the locking screw hole that corresponds respectively, and the structure of every anti-drop bolt includes: nut and fixed connection are in the check lock lever on the nut, the external diameter of check lock lever is less than the internal diameter of locking screw hole, be provided with the locking head at the check lock lever tip of keeping away from the nut, be provided with in the outside of locking head can with the internal thread looks screw thread fit's of locking screw hole external screw thread, corresponding locking screw hole on the locking screw hole of a semi-ring gland is screwed out and the complete screw in is covered to another semi-ring gland when the locking head of anti-drop bolt, until the nut of anti-drop bolt is tight when corresponding semi-ring gland, the anti-drop bolt can close the locking relatively and fix annular gland body with two semi-ring glands.
4. The shaft sealing device for a full split pump according to claim 3, wherein: and each split part of the split gland is respectively provided with a first sealing gasket for sealing between two split joint end surfaces of the split part.
5. The shaft sealing device for a full split pump according to claim 1, wherein: and each split part of the split shaft sleeve is respectively provided with a second sealing gasket for sealing between two split joint end surfaces of the split part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022373487.1U CN213628860U (en) | 2020-10-22 | 2020-10-22 | Shaft seal device for complete split pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022373487.1U CN213628860U (en) | 2020-10-22 | 2020-10-22 | Shaft seal device for complete split pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213628860U true CN213628860U (en) | 2021-07-06 |
Family
ID=76622243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022373487.1U Active CN213628860U (en) | 2020-10-22 | 2020-10-22 | Shaft seal device for complete split pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213628860U (en) |
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2020
- 2020-10-22 CN CN202022373487.1U patent/CN213628860U/en active Active
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