CN204716985U - A kind of side entering type sanitation-grade mechanical seal structure - Google Patents
A kind of side entering type sanitation-grade mechanical seal structure Download PDFInfo
- Publication number
- CN204716985U CN204716985U CN201520365858.8U CN201520365858U CN204716985U CN 204716985 U CN204716985 U CN 204716985U CN 201520365858 U CN201520365858 U CN 201520365858U CN 204716985 U CN204716985 U CN 204716985U
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Abstract
The utility model discloses a kind of side entering type sanitation-grade mechanical seal structure, comprise rotating ring, stationary ring, rotating seat and stationary seat, stirring shaft upper sleeve has axle sleeve, axle sleeve be fixed with rotating seat and be provided with stationary seat, stationary seat is by the rear end of bearing hinge connection at axle sleeve, rotating seat is fixed on the front end of axle sleeve, described axle sleeve upper sleeve has rotating ring and stationary ring, rotating ring O type circle is clamped with between the outer wall of rotating ring and the inwall of rotating seat, stationary ring O type circle is clamped with between the outer wall of stationary ring and the inwall of stationary seat, stationary seat is provided with spring, stationary ring is put forth effort on the top of spring, the front-end face of stationary ring is pressed against on the ear end face of rotating ring.Its stationary ring and stationary seat adopt dynamic cooperation, and radial sealing surfaces adopts the sealing of O type circle, axially adopt spring-compensating to compress; Adopt O type circle to seal between rotating ring and axle sleeve, also adopt O type circle to seal between rotating seat and bearing, sealing is reliable, and cleaning is without dead angle.And sealing adopts metal carbide to food-grade PTFE, the generation of decreasing pollution material.
Description
Technical field:
The utility model relates to technical field of mechanical, relates to a kind of side entering type sanitation-grade mechanical seal structure in particular.
Background technique:
Mechanical seal refers to and under the effect of hydrodynamic pressure and compensation mechanism elastic force (or magnetic force) and under the cooperation of auxiliary seal, keeps laminating by least one pair of end face perpendicular to spin axis and relative sliding and device that the anti-fluid that forms is leaked.
But its structure of existing mechanical seal is generally and all adopts stationary ring to be arranged on base plate, and rotating ring is arranged on rotating seat, and rotating seat rotates with axle, and sealing surface adopts silicon carbide to form of graphite.This structure certainly will cause 2 kinds of results, the first, stationary ring with there is larger gap before axle and store material; The second, rotating ring spring is immersed in the middle of material.No matter which kind of, all not easy cleanings, and the wearing and tearing of graphite all can pollute material.
Model utility content:
The purpose of this utility model overcomes the deficiencies in the prior art, provides the mechanical seal of a kind of side entering type sanitation-grade, and its stationary ring and stationary seat adopt dynamic cooperation, and radial sealing surfaces adopts the sealing of O type circle, axially adopts spring-compensating to compress; Adopt O type circle to seal between rotating ring and axle sleeve, also adopt O type circle to seal between rotating seat and bearing, static each other, sealing is reliable, and cleaning is without dead angle.And sealing adopts metal carbide to food-grade PTFE, the generation of decreasing pollution material.
The scheme that the utility model solve the technical problem is:
The mechanical seal of a kind of side entering type sanitation-grade, comprise rotating ring, stationary ring, rotating seat and stationary seat, stirring shaft upper sleeve has axle sleeve, axle sleeve be fixed with rotating seat and be provided with stationary seat, stationary seat is by the rear end of bearing hinge connection at axle sleeve, rotating seat is fixed on the front end of axle sleeve, described axle sleeve upper sleeve has rotating ring and stationary ring, rotating ring O type circle is clamped with between the outer wall of rotating ring and the inwall of rotating seat, stationary ring O type circle is clamped with between the outer wall of stationary ring and the inwall of stationary seat, stationary seat is provided with spring, stationary ring is put forth effort on the top of spring, the front-end face of stationary ring is pressed against on the ear end face of rotating ring.
Described axle sleeve is disposed with stair-stepping front waist section, middle part and end segment from front to back, the diameter of front waist section is greater than the diameter of middle part, the diameter of middle part is greater than the diameter of end segment, the top of front waist section has spiro union portion, the rear portion of middle part has thread section, the inwall of front waist section has seal ring connected in star, seal ring is nested in seal ring connected in star, and seal ring is pressed against on the outer wall of stirring shaft.
Described rotating seat is screwed onto on spiro union portion, the outside, rear end of rotating seat has axially extended rotating seat extension part, the rear end inwall of rotating seat extension part has circular groove, the front-end face of rotating ring has the rotating ring extension part extended forward, rotating ring extension part sleeve is in rotating seat extension part, and rotating ring O type circle is clamped between rotating ring extension part and rotating seat extension part.
Bearing is fixed with in described middle part, the rear end of middle part is bolted with two locking nuts, two locking nuts are pressed against mutually, one of them locking nut is pressed against on the ear end face of the outer ring of bearing, the front-end face of the outer ring of bearing is pressed against on the ear end face of front waist section, seal end plate is bolted to connection on stationary seat, and the outer side wall of the outer ring of bearing is pressed against on the madial wall of seal end plate.
The rear portion of described front waist section is inserted with cushion block, and cushion block is in seal end plate, and the front-end face of cushion block is pressed against on the ear end face of stationary seat, and the outer side wall of cushion block is pressed against on the madial wall of seal end plate.
The madial wall of described cushion block has radial extension edge, spring seat sleeve is in front waist section, the outer wall of spring seat is pressed against on the madial wall of stationary seat, the bottom of spring seat is pressed against on radial extension edge, the front inner wall of stationary seat has the radial lug boss extended, the front portion of spring seat is pressed against on the ear end face of lug boss, the madial wall of lug boss has sealing circular groove, stationary ring O type circle is nested in sealing circular groove, spring sleeve is in spring seat, spring seat is put forth effort in the lower end of spring, packing ring is put forth effort in upper end, packing ring sleeve is in front waist section and be in spring seat, stationary ring sleeve is in stationary seat, packing ring is pressed against on the ear end face of stationary ring, the front-end face of stationary ring is pressed against on the ear end face of rotating ring, stationary ring O type circle elasticity is pressed against on the outer side wall of stationary ring, the ear end face of described rotating ring is fixed with metal alloy layer, and stationary ring is teflon material.
Outstanding effect of the present utility model is:
Compared with prior art, its stationary ring and stationary seat adopt dynamic cooperation, and radial sealing surfaces adopts the sealing of O type circle, axially adopt spring-compensating to compress; Adopt O type circle to seal between rotating ring and axle sleeve, also adopt O type circle to seal between rotating seat and bearing, static each other, sealing is reliable, and cleaning is without dead angle.And sealing adopts metal carbide to food-grade PTFE, the generation of decreasing pollution material.
Accompanying drawing illustrates:
Fig. 1 is partial sectional view of the present utility model.
Embodiment:
Embodiment, see as shown in Figure 1, the mechanical seal of a kind of side entering type sanitation-grade, comprise rotating ring 1, stationary ring 2, rotating seat 3 and stationary seat 4, stirring shaft 10 upper sleeve has axle sleeve 20, axle sleeve 20 be fixed with rotating seat 3 and be provided with stationary seat 4, stationary seat 4 is hinged on the rear end of axle sleeve 20 by bearing 5, rotating seat 3 is fixed on the front end of axle sleeve 20, described axle sleeve 20 upper sleeve has rotating ring 1 and stationary ring 2, rotating ring O type circle 6 is clamped with between the outer wall of rotating ring 1 and the inwall of rotating seat 3, stationary ring O type circle 7 is clamped with between the outer wall of stationary ring 2 and the inwall of stationary seat 4, stationary seat 4 is provided with spring 8, stationary ring 2 is put forth effort on the top of spring 8, the front-end face of stationary ring 2 is pressed against on the ear end face of rotating ring 1.
Further, described axle sleeve 20 is disposed with stair-stepping front waist section 21, middle part 22 and end segment 23 from front to back, the diameter of front waist section 21 is greater than the diameter of middle part 22, the diameter of middle part 22 is greater than the diameter of end segment 23, the top of front waist section 21 has spiro union portion 211, the rear portion of middle part 22 has thread section 221, the inwall of front waist section 21 has seal ring connected in star 212, and seal ring 213 is nested in seal ring connected in star 212, and seal ring 213 is pressed against on the outer wall of stirring shaft 10.
Further, described rotating seat 3 is screwed onto on spiro union portion 211, the outside, rear end of rotating seat 3 has axially extended rotating seat extension part 31, the rear end inwall of rotating seat extension part 31 has circular groove 32, the front-end face of rotating ring 1 has the rotating ring extension part 11 extended forward, rotating ring extension part 11 sleeve is in rotating seat extension part 31, and rotating ring O type circle 6 is clamped between rotating ring extension part 11 and rotating seat extension part 31.
Further, bearing 5 is fixed with in described middle part 22, the rear end of middle part 22 is bolted with two locking nuts 222, two locking nuts 222 are pressed against mutually, one of them locking nut 222 is pressed against on the ear end face of the outer ring of bearing 5, the front-end face of the outer ring of bearing 5 is pressed against on the ear end face of front waist section 21, and seal end plate 9 is bolted to connection on stationary seat 4, and the outer side wall of the outer ring of bearing 20 is pressed against on the madial wall of seal end plate 9.
Further, the rear portion of described front waist section 21 is inserted with cushion block 214, and cushion block 214 is in seal end plate 9, and the front-end face of cushion block 214 is pressed against on the ear end face of stationary seat 4, and the outer side wall of cushion block 214 is pressed against on the madial wall of seal end plate 9.
Further, the madial wall of described cushion block 214 has radial extension edge 215, spring seat 216 sleeve is in front waist section 21, the outer wall of spring seat 216 is pressed against on the madial wall of stationary seat 4, the bottom of spring seat 216 is pressed against on radial extension edge 215, the front inner wall of stationary seat 4 has the radial lug boss 41 extended, the front portion of spring seat 216 is pressed against on the ear end face of lug boss 41, the madial wall of lug boss 41 has sealing circular groove 411, stationary ring O type circle 7 is nested in sealing circular groove 411, spring 8 sleeve is in spring seat 216, spring seat 216 is put forth effort in the lower end of spring 8, packing ring 217 is put forth effort in upper end, packing ring 217 sleeve is in front waist section 21 and be in spring seat 216, stationary ring 2 sleeve is in stationary seat 4, packing ring 217 is pressed against on the ear end face of stationary ring 2, the front-end face of stationary ring 2 is pressed against on the ear end face of rotating ring 1, stationary ring O type circle 7 elasticity is pressed against on the outer side wall of stationary ring 2, the ear end face of described rotating ring 1 is fixed with metal alloy layer 12, and stationary ring 2 is polytetrafluoroethylene floor material.
It adopts rotating ring O type circle 6 and stationary ring O type circle 7, static each other, improves its sealing effect, meanwhile, the ear end face of the rotating ring 1 that it adopts is fixed with metal alloy layer 12, stationary ring 2 is teflon material, and stationary ring 2 is the teflon material of food-grade, it pollutes less.And its stationary ring 2 and stationary seat 4 coordinate for dynamic, its cleaning without dead angle, easy to clean, and good seal.
Finally; above mode of execution is only for illustration of the utility model; and be not limitation of the utility model; the those of ordinary skill of relevant technical field; when not departing from spirit and scope of the present utility model; can also make a variety of changes and modification, therefore all equivalent technological schemes also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (6)
1. side entering type sanitation-grade mechanical seal, comprise rotating ring (1), stationary ring (2), rotating seat (3) and stationary seat (4), stirring shaft (10) upper sleeve has axle sleeve (20), axle sleeve (20) be fixed with rotating seat (3) and be provided with stationary seat (4), stationary seat (4) is hinged on the rear end of axle sleeve (20) by bearing (5), rotating seat (3) is fixed on the front end of axle sleeve (20), it is characterized in that: described axle sleeve (20) upper sleeve has rotating ring (1) and stationary ring (2), rotating ring O type circle (6) is clamped with between the outer wall of rotating ring (1) and the inwall of rotating seat (3), stationary ring O type circle (7) is clamped with between the outer wall of stationary ring (2) and the inwall of stationary seat (4), stationary seat (4) is provided with spring (8), stationary ring (2) is put forth effort on the top of spring (8), the front-end face of stationary ring (2) is pressed against on the ear end face of rotating ring (1).
2. a kind of side entering type sanitation-grade according to claim 1 mechanical seal, it is characterized in that: described axle sleeve (20) is disposed with stair-stepping front waist section (21) from front to back, middle part (22) and end segment (23), the diameter of front waist section (21) is greater than the diameter of middle part (22), the diameter of middle part (22) is greater than the diameter of end segment (23), the top of front waist section (21) has spiro union portion (211), the rear portion of middle part (22) has thread section (221), the inwall of front waist section (21) has seal ring connected in star (212), seal ring (213) is nested in seal ring connected in star (212), seal ring (213) is pressed against on the outer wall of stirring shaft (10).
3. a kind of side entering type sanitation-grade according to claim 2 mechanical seal, it is characterized in that: described rotating seat (3) is screwed onto on spiro union portion (211), the outside, rear end of rotating seat (3) has axially extended rotating seat extension part (31), the rear end inwall of rotating seat extension part (31) has circular groove (32), the front-end face of rotating ring (1) has the rotating ring extension part (11) extended forward, rotating ring extension part (11) sleeve is in rotating seat extension part (31), rotating ring O type circle (6) is clamped between rotating ring extension part (11) and rotating seat extension part (31).
4. a kind of side entering type sanitation-grade according to claim 2 mechanical seal, it is characterized in that: in described middle part (22), be fixed with bearing (5), the rear end of middle part (22) is bolted with two locking nuts (222), two locking nuts (222) are pressed against mutually, one of them locking nut (222) is pressed against on the ear end face of the outer ring of bearing (5), the front-end face of the outer ring of bearing (5) is pressed against on the ear end face of front waist section (21), seal end plate (9) is bolted to connection on stationary seat (4), the outer side wall of the outer ring of bearing (20) is pressed against on the madial wall of seal end plate (9).
5. a kind of side entering type sanitation-grade according to claim 4 mechanical seal, it is characterized in that: the rear portion of described front waist section (21) is inserted with cushion block (214), cushion block (214) is in seal end plate (9), the front-end face of cushion block (214) is pressed against on the ear end face of stationary seat (4), and the outer side wall of cushion block (214) is pressed against on the madial wall of seal end plate (9).
6. a kind of side entering type sanitation-grade according to claim 5 mechanical seal, it is characterized in that: the madial wall of described cushion block (214) has radial extension edge (215), spring seat (216) sleeve is in front waist section (21), the outer wall of spring seat (216) is pressed against on the madial wall of stationary seat (4), the bottom of spring seat (216) is pressed against on radial extension edge (215), the front inner wall of stationary seat (4) has the radial lug boss (41) extended, the front portion of spring seat (216) is pressed against on the ear end face of lug boss (41), the madial wall of lug boss (41) has sealing circular groove (411), stationary ring O type circle (7) is nested in sealing circular groove (411), spring (8) sleeve is in spring seat (216), spring seat (216) is put forth effort in the lower end of spring (8), packing ring (217) is put forth effort in upper end, packing ring (217) sleeve is in front waist section (21) and be in spring seat (216), stationary ring (2) sleeve is in stationary seat (4), packing ring (217) is pressed against on the ear end face of stationary ring (2), the front-end face of stationary ring (2) is pressed against on the ear end face of rotating ring (1), stationary ring O type circle (7) elasticity is pressed against on the outer side wall of stationary ring (2), the ear end face of described rotating ring (1) is fixed with metal alloy layer (12), stationary ring (2) is teflon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365858.8U CN204716985U (en) | 2015-05-29 | 2015-05-29 | A kind of side entering type sanitation-grade mechanical seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365858.8U CN204716985U (en) | 2015-05-29 | 2015-05-29 | A kind of side entering type sanitation-grade mechanical seal structure |
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| Publication Number | Publication Date |
|---|---|
| CN204716985U true CN204716985U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520365858.8U Expired - Fee Related CN204716985U (en) | 2015-05-29 | 2015-05-29 | A kind of side entering type sanitation-grade mechanical seal structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN204716985U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402396A (en) * | 2016-10-25 | 2017-02-15 | 浙江大学 | High-temperature mechanical sealing structure |
| CN106523708A (en) * | 2016-12-02 | 2017-03-22 | 南京航空航天大学 | Polytetrafluoroethylene contact type sealing device |
| CN107237827A (en) * | 2016-03-28 | 2017-10-10 | 沈阳海默数控机床有限公司 | A kind of sealing structure of machine tool chief axis |
| CN107401616A (en) * | 2017-07-28 | 2017-11-28 | 丹东克隆集团有限责任公司 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
| CN108603601A (en) * | 2016-02-02 | 2018-09-28 | 伊格尔博格曼德国有限公司 | Mechanically-sealing apparatus with simple structure |
| CN109210196A (en) * | 2018-11-09 | 2019-01-15 | 昆山密友机械密封有限公司 | The Hermetical connecting structure of high-temperature service mechanical shaft seal axle sleeve |
| CN109441871A (en) * | 2018-12-20 | 2019-03-08 | 丹东克隆集团有限责任公司 | Nuclear power feed pump mechanical sealing linkage ring device |
| CN110405528A (en) * | 2019-07-31 | 2019-11-05 | 哈尔滨锅炉厂有限责任公司 | The anti-iron filings device of tube end maching |
| CN109210196B (en) * | 2018-11-09 | 2024-04-16 | 昆山密友机械密封有限公司 | Sealing connection structure of mechanical shaft sealing shaft sleeve of high-temperature equipment |
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2015
- 2015-05-29 CN CN201520365858.8U patent/CN204716985U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108603601A (en) * | 2016-02-02 | 2018-09-28 | 伊格尔博格曼德国有限公司 | Mechanically-sealing apparatus with simple structure |
| CN107237827A (en) * | 2016-03-28 | 2017-10-10 | 沈阳海默数控机床有限公司 | A kind of sealing structure of machine tool chief axis |
| CN106402396A (en) * | 2016-10-25 | 2017-02-15 | 浙江大学 | High-temperature mechanical sealing structure |
| CN106402396B (en) * | 2016-10-25 | 2018-02-06 | 浙江大学 | High temperature mechanical sealing structure |
| CN106523708A (en) * | 2016-12-02 | 2017-03-22 | 南京航空航天大学 | Polytetrafluoroethylene contact type sealing device |
| CN106523708B (en) * | 2016-12-02 | 2018-03-02 | 南京航空航天大学 | A kind of polytetrafluoroethylene (PTFE) contact type sealing device |
| CN107401616A (en) * | 2017-07-28 | 2017-11-28 | 丹东克隆集团有限责任公司 | Nuclear power low pressure safety injection pump mechanically-sealing apparatus |
| CN109210196A (en) * | 2018-11-09 | 2019-01-15 | 昆山密友机械密封有限公司 | The Hermetical connecting structure of high-temperature service mechanical shaft seal axle sleeve |
| CN109210196B (en) * | 2018-11-09 | 2024-04-16 | 昆山密友机械密封有限公司 | Sealing connection structure of mechanical shaft sealing shaft sleeve of high-temperature equipment |
| CN109441871A (en) * | 2018-12-20 | 2019-03-08 | 丹东克隆集团有限责任公司 | Nuclear power feed pump mechanical sealing linkage ring device |
| CN110405528A (en) * | 2019-07-31 | 2019-11-05 | 哈尔滨锅炉厂有限责任公司 | The anti-iron filings device of tube end maching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20180529 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |