CN107606165B - Throttle device for mechanical seal cavity - Google Patents
Throttle device for mechanical seal cavity Download PDFInfo
- Publication number
- CN107606165B CN107606165B CN201710621793.2A CN201710621793A CN107606165B CN 107606165 B CN107606165 B CN 107606165B CN 201710621793 A CN201710621793 A CN 201710621793A CN 107606165 B CN107606165 B CN 107606165B
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- outer ring
- ring
- inner ring
- spigot
- spring
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Abstract
The invention discloses a mechanical seal cavity throttling device which consists of an inner ring (1), an outer ring (2), a spring (3), an anti-rotation pin (4), a clamp spring (5) and a conical thread plug (6); the inner ring (1) is in sliding fit with the spigot of the outer ring (2), springs (3) are distributed on the vertical end surfaces of the spigot platforms of the outer ring (2) and the inner ring (1) to push the inner ring (1), an anti-rotation pin (4) is arranged to prevent the inner ring (1) from rotating relative to the outer ring (2), the inner ring (1) is axially limited and installed in the outer ring (2) through a clamp spring (5) on the outer ring (2), a breaking notch (23) and a conical thread plug (6) are formed in the outer ring (2), the outer ring (2) is expanded through the conical thread plug (6), and the outer ring (2) is radially expanded and fastened on the inner ring wall of a pump body sealing cavity.
Description
Technical Field
The invention relates to a throttling device for a mechanical seal cavity shaft hole, which is matched with a mechanical seal device.
Background
In order to throttle the medium entering the mechanical seal device from the outside, so as to prevent impurities in the medium from entering the sealing end face and relieve the pressure outside the sealing end face, a throttle ring A is fixedly arranged on the outer annular surface of a tailstock of a dynamic ring assembly of the mechanical seal device, and the outer annular surface of the throttle ring A is in clearance fit with the inner annular surface of a mechanical seal cavity on a pump body to throttle. The inner diameter of the mechanical seal cavity is required to be large, so that the installation is difficult, and the mechanical seal cavity and the mechanical seal are required to be assembled and disassembled simultaneously, so that the assembly and the disassembly are inconvenient.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a mechanical seal cavity throttling device convenient to install and use.
The invention is composed of an inner ring 1, an outer ring 2, a spring 3, an anti-rotation pin 4, a clamp spring 5 and a conical thread plug 6.
An outer spigot table 10 is arranged on the right side of the inner ring 1, an inner spigot table 20 is arranged on the left side of the outer ring 2, the inner ring 1 is in sliding fit with the spigot of the outer ring 2, spring mounting holes 21 are circumferentially distributed on the vertical end face of the inner spigot table 20 of the outer ring 2, and springs 3 are mounted in the spring mounting holes 21 formed in the outer ring 2 to push against the inner ring 1.
An anti-rotation pin 4 is fixedly connected to the vertical end face of the inner spigot table 20 of the outer ring 2, and the anti-rotation pin 4 is matched with a pin hole 14 formed in the vertical end face of the outer spigot table 10 on the right side of the inner ring 1 to prevent the inner ring 1 and the outer ring 2 from rotating relatively.
The outer ring part of the left end surface of the inner ring 1 is provided with a concave table 15, the transverse end surface of the inner spigot table 20 of the outer ring 2 is provided with a clamping groove 25, the clamping spring 5 is arranged on the clamping groove 25 arranged on the outer ring 2, and the clamping spring 5 is matched with the concave table 15 on the inner ring 1, so that the inner ring 1 axially slides to be limited and arranged in the outer ring 2.
The outer ring 2 is provided with a breaking notch 23, a conical threaded hole 24 is formed in the breaking notch 23, a conical threaded plug 6 is arranged in the conical threaded hole 24, and the conical threaded plug 6 is matched with the conical threaded hole 24 formed in the outer ring 2 to expand the outer ring 2, so that the outer diameter is increased.
The inner side surface of the outer ring 2 is provided with a radial groove 27 and an anti-cracking hole 28 which are matched with the breaking notch 23, so that when the conical threaded hole 24 is screwed into the conical threaded plug 6 to expand the outer ring 2, the outer ring 2 can be conveniently expanded and the outer ring 2 can be prevented from being broken.
When the invention is used, the inner ring 1 is in clearance fit with a main shaft or a shaft sleeve, the outer ring 2 is in sliding clearance fit with the inner wall of a sealing cavity, the invention is arranged at the end face of a mechanical sealing cavity side end spigot of a pump body, a conical thread plug 6 is screwed up by a spanner, the conical thread plug 6 generates radial expansion force on the outer ring 2, so that the outer ring 2 is radially expanded and fastened on the inner wall of the sealing cavity of the pump body, and the inner ring 1 is abutted against the mechanical sealing cavity side end spigot end face under the action of a clamp spring 5 and is radially sealed.
The invention has very convenient installation, realizes connection and fastening through the expansion of the outer ring 2 and the pump cavity, occupies small radial space, and is particularly suitable for the condition of small inner diameter of the mechanical seal cavity.
Drawings
Fig. 1 is a prior art construction and utility state schematic.
Fig. 2, 3 and 4 are schematic structural views of an embodiment of the present invention, wherein fig. 3 is a sectional view A-A of fig. 2, and fig. 4 is a sectional view B-B of fig. 2.
FIG. 5 is a schematic diagram of the usage status of the embodiment of the present invention.
Detailed Description
The invention is composed of an inner ring 1, an outer ring 2, a spring 3, an anti-rotation pin 4, a clamp spring 5 and a conical thread plug 6.
An outer spigot table 10 is arranged on the right side of the inner ring 1, an inner spigot table 20 is arranged on the left side of the outer ring 2, the inner ring 1 is in sliding fit with the spigot of the outer ring 2, spring mounting holes 21 are circumferentially distributed on the vertical end face of the inner spigot table 20 of the outer ring 2, and springs 3 are mounted in the spring mounting holes 21 formed in the outer ring 2 to push against the inner ring 1.
An anti-rotation pin 4 is fixedly connected to the vertical end face of the inner spigot table 20 of the outer ring 2, and the anti-rotation pin 4 is matched with a pin hole 14 formed in the vertical end face of the outer spigot table 10 on the right side of the inner ring 1 to prevent the inner ring 1 and the outer ring 2 from rotating relatively.
The outer ring part of the left end surface of the inner ring 1 is provided with a concave table 15, the transverse end surface of the inner spigot table 20 of the outer ring 2 is provided with a clamping groove 25, the clamping spring 5 is arranged on the clamping groove 25 arranged on the outer ring 2, and the clamping spring 5 is matched with the concave table 15 on the inner ring 1, so that the inner ring 1 axially slides to be limited and arranged in the outer ring 2.
A breaking notch 23 is formed in the outer ring 2, a conical threaded hole 24 is formed in the breaking notch 23, and a conical threaded plug 6 is arranged in the conical threaded hole 24; a radial groove 27 and an anti-cracking hole 28 are provided on the inner side surface of the outer ring 2 corresponding to the center line of the breaking notch 23.
The embodiment shown in fig. 3 shows that the inner ring 1 of the throttling device of the mechanical seal cavity is matched with a pump shaft.
The embodiment of fig. 5 shows that the inner ring 1 of the throttling device of the mechanical seal cavity is matched with the shaft sleeve.
Claims (1)
1. The throttling device of the mechanical seal cavity is characterized by comprising an inner ring (1), an outer ring (2), a spring (3), an anti-rotation pin (4), a clamp spring (5) and a conical thread plug (6);
an outer spigot table (10) is arranged on the right side of the inner ring (1), an inner spigot table (20) is arranged on the left side of the outer ring (2), the inner ring (1) is in sliding fit with the spigot of the outer ring (2), spring mounting holes (21) are circumferentially distributed on the vertical end surface of the inner spigot table (20) of the outer ring (2), and springs (3) are mounted in the spring mounting holes (21) arranged on the outer ring (2) to push the inner ring (1);
an anti-rotation pin (4) is fixedly connected to the vertical end surface of the inner spigot table (20) of the outer ring (2), and the anti-rotation pin (4) is matched with a pin hole (14) formed in the vertical end surface of the outer spigot table (10) on the right side of the inner ring (1) to prevent the inner ring (1) from rotating relative to the outer ring (2);
the outer ring part of the left end surface of the inner ring (1) is provided with a concave table (15), the transverse end surface of the inner spigot table (20) of the outer ring (2) is provided with a clamping groove (25), the clamping spring (5) is arranged on the clamping groove (25) arranged on the outer ring (2), and the clamping spring (5) is matched with the concave table (15) on the inner ring (1) so that the inner ring (1) is axially and slidably arranged in the outer ring (2) in a limiting way;
a breaking notch (23) is formed in the outer ring (2), a conical threaded hole (24) is formed in the breaking notch (23), a conical threaded plug (6) is arranged in the conical threaded hole (24), and the conical threaded plug (6) is matched with the conical threaded hole (24) formed in the outer ring (2) to expand the outer ring (2) and increase the outer diameter;
radial grooves (27) and anti-cracking holes (28) are formed in the inner side face of the outer ring (2) so as to facilitate the outer ring (2) to expand and prevent the outer ring (2) from being broken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710621793.2A CN107606165B (en) | 2017-07-27 | 2017-07-27 | Throttle device for mechanical seal cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710621793.2A CN107606165B (en) | 2017-07-27 | 2017-07-27 | Throttle device for mechanical seal cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107606165A CN107606165A (en) | 2018-01-19 |
| CN107606165B true CN107606165B (en) | 2023-07-18 |
Family
ID=61060024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710621793.2A Active CN107606165B (en) | 2017-07-27 | 2017-07-27 | Throttle device for mechanical seal cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107606165B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861692A (en) * | 1971-08-20 | 1975-01-21 | Borg Warner Stieber Gmbh | Collet and adjusting screw therefor |
| DE8021867U1 (en) * | 1980-08-16 | 1980-11-13 | Feighofen, Hans, 5760 Arnsberg | TWO-RING CLAMP |
| US6149364A (en) * | 1997-03-07 | 2000-11-21 | Maeda; Yutaka | Collet and fastener using same |
| US6231262B1 (en) * | 1998-09-15 | 2001-05-15 | Riverbank Company, L.P. | Hydraulically-actuated torque coupler |
| CN201880945U (en) * | 2010-11-08 | 2011-06-29 | 安波电机(宁德)有限公司 | Blank cap type motor housing processing fixture |
| CN201922064U (en) * | 2011-01-27 | 2011-08-10 | 淄博真空设备厂有限公司 | Simple expanding mold jig |
| CN103233911A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | Divided-plate ring type sealing deivce |
| CN203390236U (en) * | 2013-08-08 | 2014-01-15 | 重庆蓝黛动力传动机械股份有限公司 | Mandrel with expandable core |
| CN204327786U (en) * | 2014-12-17 | 2015-05-13 | 洛阳豪智机械有限公司 | A kind of easily installing/dismounting hydraulic locking dish |
| CN204755625U (en) * | 2015-07-28 | 2015-11-11 | 四川德恩精工科技股份有限公司 | Easy dismounting's tight cover that expands |
| CN106466813A (en) * | 2015-08-13 | 2017-03-01 | 内蒙古航天红峡化工有限公司 | A kind of annular heat insulation layer polishing support fixture |
-
2017
- 2017-07-27 CN CN201710621793.2A patent/CN107606165B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861692A (en) * | 1971-08-20 | 1975-01-21 | Borg Warner Stieber Gmbh | Collet and adjusting screw therefor |
| DE8021867U1 (en) * | 1980-08-16 | 1980-11-13 | Feighofen, Hans, 5760 Arnsberg | TWO-RING CLAMP |
| US6149364A (en) * | 1997-03-07 | 2000-11-21 | Maeda; Yutaka | Collet and fastener using same |
| US6231262B1 (en) * | 1998-09-15 | 2001-05-15 | Riverbank Company, L.P. | Hydraulically-actuated torque coupler |
| CN201880945U (en) * | 2010-11-08 | 2011-06-29 | 安波电机(宁德)有限公司 | Blank cap type motor housing processing fixture |
| CN201922064U (en) * | 2011-01-27 | 2011-08-10 | 淄博真空设备厂有限公司 | Simple expanding mold jig |
| CN103233911A (en) * | 2013-04-13 | 2013-08-07 | 丹东克隆集团有限责任公司 | Divided-plate ring type sealing deivce |
| CN203390236U (en) * | 2013-08-08 | 2014-01-15 | 重庆蓝黛动力传动机械股份有限公司 | Mandrel with expandable core |
| CN204327786U (en) * | 2014-12-17 | 2015-05-13 | 洛阳豪智机械有限公司 | A kind of easily installing/dismounting hydraulic locking dish |
| CN204755625U (en) * | 2015-07-28 | 2015-11-11 | 四川德恩精工科技股份有限公司 | Easy dismounting's tight cover that expands |
| CN106466813A (en) * | 2015-08-13 | 2017-03-01 | 内蒙古航天红峡化工有限公司 | A kind of annular heat insulation layer polishing support fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107606165A (en) | 2018-01-19 |
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