CN210106602U - Self-circulation double-end-face mechanical sealing system - Google Patents
Self-circulation double-end-face mechanical sealing system Download PDFInfo
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- CN210106602U CN210106602U CN201920729498.3U CN201920729498U CN210106602U CN 210106602 U CN210106602 U CN 210106602U CN 201920729498 U CN201920729498 U CN 201920729498U CN 210106602 U CN210106602 U CN 210106602U
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Abstract
The utility model provides a self-loopa double-end face mechanical seal system, including mechanical seal subassembly, mechanical seal subassembly includes the mechanical seal seat, be provided with the external screw thread pump guiding gutter in the mechanical seal seat, the mechanical seal seat center has been seted up the shaft hole and has been run through with the external screw thread pump guiding gutter, external screw thread pump guiding gutter internal connection, transmission are arranged in to the transmission main shaft, the external screw thread pump guiding gutter surface has been seted up and has been got rid of the water hole, be fixed with first rotating ring and second rotating ring respectively on the terminal surface around the external screw thread pump guiding gutter, first rotating ring inboard setting is hugged closely to first stationary ring, the second rotating ring inboard setting is hugged closely to the stationary ring of second, be provided with pressure spring between first stationary ring and the stationary ring of second, the mechanical seal retaining ring is fixed in the first stationary ring outside, the outside. The self-circulation double-end-face mechanical sealing system is simple in structure and ingenious in design, cooling during friction between the movable ring and the static ring can be effectively achieved, the service life of mechanical sealing is prolonged, and meanwhile a good mechanical sealing effect is achieved.
Description
Technical Field
The utility model relates to a mechanical seal technical field, concretely relates to self-loopa double mechanical seal system.
Background
The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, grinders, reaction vessels, and compressors. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. The mechanical seal is called a face seal, and is defined in the relevant national standard as a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to a rotating axis, keeping fit and relatively sliding under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal. "
The mechanical sealing part belongs to one of precise mechanical basic parts with complex structures and is a key part of equipment such as various pumps, grinders, reaction synthesis kettles, turbine compressors, submersible motors and the like. In the prior art, the grinding area of the grinding machine is a closed cylinder, when the grinding machine works, the upper cover is closed, the grinding of the material particle size is not positive, no protective measures are provided in the grinding area, if a small grinding medium enters the gap, the small grinding medium can leak out of the gap, and the grinding efficiency is low.
Chinese patent publication No. CN201685178U discloses a mechanical seal in an ultra-fine horizontal nano-grinder, which mainly comprises: the high-precision sealing device comprises a front end rotating ring, a front end static ring, a first flow guide sleeve, an inner partition sleeve, a shaft sleeve, a rear end static ring, a rear end rotating ring, an adjusting cushion block, a shell, special-shaped sealing rings, sealing bolts, a movable pin and a sealing element, wherein the shell is fixedly connected with a grinding machine through threads, the two front end rotating rings are installed on the upper side and the lower side of the grinding machine in a high-precision tolerance fit mode, the two front end static rings are installed on the two front end rotating rings, the two pairs of front end rotating rings and the front end static rings, the rear end static rings and the rear end rotating rings, and the special-shaped sealing rings processed by. The mechanical seal adopts two pairs of friction pairs of front end movable rings and front end static rings, rear end static rings and rear end movable rings, and special-shaped seal rings made of special materials are arranged between the static rings and the shell, so that the existence of an elastic compensation space is ensured, and small grinding media are prevented from entering elastic compensation gaps. However, in the high-speed grinding process, high temperature is generated after friction between the moving ring and the static ring, if the temperature is not reduced in time, the moving ring and the static ring are easily abraded, the sealing performance is reduced, and the service life of the mechanical seal is further shortened.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a self-loopa double mechanical seal system can effectively realize the cooling when rubbing between rotating ring and the quiet ring, improves mechanical seal's life.
In order to realize the technical scheme, the utility model provides a self-loopa double mechanical seal system, include: the mechanical seal assembly comprises a machine seal seat, an external thread pump water chute is arranged in the machine seal seat, a shaft hole is formed in the center of the machine seal seat and penetrates through the external thread pump water chute, a transmission main shaft is arranged in the external thread pump water chute for connection and transmission, the surface of the water chute of the external thread pump is provided with a water throwing hole, the front end surface and the rear end surface of the water chute of the external thread pump are respectively fixed with a first movable ring and a second movable ring, the first static ring is arranged by being clung to the inner side of the first movable ring, the second static ring is arranged by being clung to the inner side of the second movable ring, a pressure spring is arranged between the first static ring and the second static ring, a mechanical seal retainer ring is fixed at the outer side of the first static ring, a mechanical seal baffle is arranged at the outer side of the mechanical seal retainer ring, and the machine seal seat is provided with a cooling water inlet and a cooling water outlet, the cooling water inlet and the cooling water outlet are respectively communicated with the water guide groove of the external thread pump, and the cooling water inlet and the cooling water outlet are vertically arranged.
In the technical scheme, in the time of the actual work, the transmission main shaft is high-speed rotatory, it is rotatory to drive external screw thread pump guiding gutter and rotating ring, the cooling water inlet on the machine seal seat is intake, the hole that throws water that utilizes the equipartition on the external screw thread pump guiding gutter is intake, the pressure boost, then discharge from the cooling water export, form inside cooling water circulation, play the lubrication, the effect of cooling heat dissipation, cooling when effectively realizing the friction between rotating ring and the quiet ring, improve mechanical seal's life, utilize spring automatic compensation simultaneously, the rotating ring is sealed with quiet ring friction at high-speed rotatory in-process, realize that the isolation of material and bearing frame is sealed, play good mechanical seal effect.
Preferably, this self-loopa double mechanical seal system still includes sealed circulating tank, be provided with compressed air import, mechanical seal liquid export and mechanical seal liquid return port on the sealed circulating tank, pass through the pipe connection between the cooling water inlet on mechanical seal liquid export and the mechanical seal seat, pass through the pipe connection between the cooling water outlet on mechanical seal liquid return port and the mechanical seal seat, compressed air import and air compressor are connected. In the actual working process, a cooling solvent is added into the sealed circulation tank, compressed air enters the sealed circulation tank through the compressed air inlet, the cooling solvent is conveyed to the cooling water inlet on the mechanical seal seat from the mechanical seal liquid outlet, then flows back to the mechanical seal liquid return port through the cooling water outlet on the mechanical seal seat, circulating cooling water and pressure are continuously provided for the mechanical seal assembly, a lubricating film is formed, the friction force is reduced, the cooling and cooling during the friction of a movable ring and a static ring of the mechanical seal are guaranteed, and the service life of the mechanical seal device is prolonged and protected.
Preferably, a clearance of 1-2mm is kept between the water throwing hole formed in the surface of the external thread pump water guide groove and the inner surface of the machine seal seat, a certain clearance must be kept between the water throwing hole formed in the surface of the external thread pump water guide groove and the inner surface of the machine seal seat, so that a water film is formed between the surface of the external thread pump water guide groove and the inner surface of the machine seal seat, cooling during friction of a moving ring and a static ring is effectively realized, the clearance between the water throwing hole formed in the surface of the external thread pump water guide groove and the inner surface of the machine seal seat is not too large, when the clearance is too large, a continuous water film is difficult to form, the cooling effect is not good, the clearance between the water throwing hole formed in the surface of the external thread pump water guide groove and the inner surface of the machine seal seat is not too small, when the clearance is too small, a heat dissipation space is not. A large number of experiments find that the cooling effect when the clearance of 1-2mm is kept between the water throwing hole formed in the surface of the water guide groove of the external thread pump and the inner surface of the mechanical seal seat can be effectively realized when the movable ring and the static ring are rubbed, and particularly the cooling effect is optimal when the clearance of 1.5mm is kept between the water throwing hole formed in the surface of the water guide groove of the external thread pump and the inner surface of the mechanical seal seat.
Preferably, the cooling water inlet setting direction is perpendicular to the water throwing hole setting direction, and the cooling water outlet setting direction is parallel to the water throwing hole setting direction, so that the area formed by water films can be increased, and the cooling effect is enhanced.
Preferably, the second movable ring is fixed at the rear end of the water guide groove of the external thread pump through a clamp spring.
Preferably, the contact positions of the first movable ring and the second movable ring with the water guide groove of the external thread pump are provided with sealing rings so as to enhance the sealing performance of the contact positions of the first movable ring and the second movable ring with the water guide groove of the external thread pump.
Preferably, a sealing ring and a mechanical seal retainer ring are arranged at the contact position of the first static ring and the inner surface of the mechanical seal seat, and a sealing ring is arranged at the contact position of the second static ring and the inner surface of the mechanical seal seat, so that the sealing performance of the contact positions of the first static ring and the second static ring and the mechanical seal seat is enhanced.
Preferably, the machine seal seat is further provided with a screw hole connected with external equipment.
Preferably, a liquid level sensor and a liquid level observation window are arranged on the sealed circulating tank.
Preferably, the machine seal retainer ring is designed into an inner inverted cone shape, and plays a role of retaining balls and reduces friction with a transmission main shaft.
The utility model provides a pair of two terminal surface mechanical seal systems of self-loopa's beneficial effect lies in: this self-loopa two-end-face mechanical seal system simple structure, and is ingenious in design, through set up the external screw pump guiding gutter that the hole was got rid of to the surface equipartition in the inside axial of quick-witted seal seat, it is high-speed rotatory through the transmission main shaft, it is rotatory to drive external screw pump guiding gutter and rotating ring, the cooling water inlet on the quick-witted seal seat is intake, utilize the hole that gets rid of water of equipartition on the external screw pump guiding gutter to intake, the pressure boost, then discharge from the cooling water outlet, form inside cooling water circulation, play the lubrication, the radiating effect of cooling, cooling when effectively realizing the friction between rotating ring and the stationary ring, improve mechanical seal's life, utilize spring automatic compensation simultaneously, the rotating ring is sealed with stationary ring friction at high-speed rotatory in-process, realize the isolation of material and bearing frame and seal.
Drawings
Fig. 1 is a cross-sectional view of the mechanical seal assembly of the present invention.
Fig. 2 is a front view of the mechanical seal assembly of the present invention.
Fig. 3 is the structural schematic diagram of the water guide groove of the external thread pump of the utility model.
Fig. 4 is the structure schematic diagram of the middle machine sealing retainer ring of the present invention.
Fig. 5 is a schematic view of the connection of the overall structure of the present invention.
In the figure: 1. a machine seal seat; 2. a mechanical seal baffle; 3. a first stationary ring; 4. a transmission main shaft; 5. a water guide groove of the external thread pump; 6. a first rotating ring; 7. a mechanical seal retainer ring; 8. a pressure spring; 9. a second stationary ring; 10. a seal ring; 11. a clamp spring; 12. a second rotating ring; 13. a feed inlet; 14. a cooling water inlet; 15. a cooling water outlet; 16. a screw hole; 17. a water throwing hole; 18. sealing the circulating tank; 19. a compressed air inlet; 20. a mechanical seal liquid outlet; 21. returning machine sealing liquid; 22. a liquid level sensor; 23. a liquid level observation window; 100. a mechanical seal assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.
Example 1: a self-circulating double mechanical seal system.
Referring to fig. 1-5, a self-circulating double mechanical seal system includes: the mechanical seal assembly 100, the mechanical seal assembly 100 includes a machine seal seat 1, an external thread pump guiding gutter 5 is arranged in the machine seal seat 1, a shaft hole is formed in the center of the machine seal seat 1 and penetrates through the external thread pump guiding gutter 5, a transmission main shaft 4 is arranged in the external thread pump guiding gutter 5 for internal connection and transmission, a plurality of strip water throwing holes 17 are uniformly formed in the surface of the external thread pump guiding gutter 5, a feed inlet 13, a cooling water inlet 14 and a cooling water outlet 15 are arranged on the machine seal seat 1, the cooling water inlet 14 and the cooling water outlet 15 are respectively communicated with the external thread pump guiding gutter 5, wherein the setting direction of the cooling water inlet 14 is perpendicular to the setting direction of the water throwing holes 17, the setting direction of the cooling water outlet 15 is parallel to the setting direction of the water throwing holes 17, the cooling water inlet 14 is perpendicular to the cooling water outlet 15, and by the design, the area formed by water films can, a clearance of 1.5mm is kept between the water throwing hole 17 formed on the surface of the external thread pump water guide groove 5 and the inner surface of the machine seal seat 1, a certain clearance is kept between the water throwing hole 17 formed on the surface of the external thread pump water guide groove 5 and the inner surface of the machine seal seat 1, so that when the external thread pump water guide groove 5 rotates at a high speed along with the transmission main shaft 4, a water film is formed between the surface of the external thread pump water guide groove 5 and the inner surface of the machine seal seat 1, the cooling and cooling of a moving ring and a static ring are effectively realized, the clearance between the water throwing hole 17 formed on the surface of the external thread pump water guide groove 5 and the inner surface of the machine seal seat 1 is not too large, when the clearance is too large, a continuous water film is difficult to form, the cooling and cooling effect is not good, the clearance between the water throwing hole 17 formed on the surface of the external thread pump water guide groove 5 and the inner surface of the machine seal, heat accumulation is easy to cause, and the cooling effect is not good; through a large number of experiments, when a clearance of 1.5mm is kept between a water throwing hole formed in the surface of the water guide groove of the external thread pump and the inner surface of the machine seal seat, the cooling of the movable ring and the static ring during friction can be effectively realized, and the cooling effect is optimal;
a first movable ring 6 and a second movable ring 12 are respectively fixed on the front end surface and the rear end surface of the external thread pump water guide groove 5, wherein the second movable ring 12 is fixed at the rear end of the external thread pump water guide groove 5 through a clamp spring 11, and a sealing ring 10 is arranged at the contact part of the first movable ring 6 and the second movable ring 12 with the external thread pump water guide groove 5 so as to enhance the sealing property of the contact part of the first movable ring 6 and the second movable ring 12 with the external thread pump water guide groove 5; the first static ring 3 is arranged close to the inner side of the first movable ring 6, the second static ring 9 is arranged close to the inner side of the second movable ring 12, a pressure spring 8 is arranged between the first static ring 3 and the second static ring 9, and a sealing ring 10 is also arranged at the contact part of the first static ring 3 and the second static ring 9 and the inner surface of the mechanical seal seat 1 so as to enhance the sealing property of the contact part of the first static ring 3 and the second static ring 9 and the mechanical seal seat 1; the mechanical seal retainer ring 7 is fixed on the outer side of the first stationary ring 3, the mechanical seal retainer ring 7 is designed into an inner inverted cone shape, the mechanical seal retainer ring plays a role of blocking balls and reduces friction with a transmission main shaft, the outer side of the mechanical seal retainer ring 7 is fixed by the mechanical seal baffle plate 2, and the outer surface of the front end of the mechanical seal seat 1 is also provided with a plurality of screw holes 16 connected with external equipment;
still including sealed circulating tank 18, be provided with compressed air import 19, machine on the sealed circulating tank 18 and seal liquid export 20 and machine and seal liquid and return mouthful 21, through the pipe connection between machine seal liquid export 20 and the machine seal seat 1 on the cooling water inlet 14, through the pipe connection between machine seal liquid returns mouthful 21 and the machine seal seat 1 on the cooling water export 15, compressed air import 19 is connected with air compressor, is provided with level sensor 22 and liquid level observation window 23 on the sealed circulating tank 18 to convenient observation and the control to the interior liquid level of sealed circulating tank 18.
In the embodiment, during actual operation, a cooling solvent is added into the sealed circulation tank 18, compressed air enters the sealed circulation tank 18 through the compressed air inlet 19, the cooling solvent is conveyed from the sealing liquid outlet 20 to the cooling water inlet 14 on the mechanical seal seat 1, the transmission main shaft 4 rotates at a high speed to drive the external screw pump water guide groove 5, the first movable ring 6 and the second movable ring 12 to rotate at a high speed, water is fed and pressurized through the water throwing holes 17 uniformly distributed on the external screw pump water guide groove 5, a water film is formed between the external screw pump water guide groove 5 and the inner surface of the mechanical seal seat 1, then the water film is discharged from the cooling water outlet 15, and finally the water flows back into the sealed circulation tank 18 through the mechanical seal liquid return port 21 to continuously provide circulating cooling water and pressure for the mechanical seal assembly 100, form a lubricating film, reduce friction force, ensure cooling during friction of the mechanical seal movable ring and the static ring, prolong and protect the service life of the mechanical seal device, meanwhile, the automatic compensation of the pressure spring 8 is utilized to ensure that the movable ring is in friction sealing with the static ring in the process of high-speed rotation, so that the materials and the bearing seat are isolated and sealed, and a good mechanical sealing effect is achieved.
This self-loopa two-end-face mechanical seal system simple structure, design benefit, through setting up the external screw pump guiding gutter 5 that the surface equipartition got rid of water hole 17 in 1 inside axial of machine seal seat, through 4 high-speed rotations of transmission main shaft, it is rotatory to drive external screw pump guiding gutter 5 and rotating ring, cooling water inlet 14 on the machine seal seat 1 intakes, utilize the water hole 17 that gets rid of equipartition on the external screw pump guiding gutter 5 to intake, the pressure boost, then discharge from cooling water outlet 15, form inside cooling water circulation, play the lubrication, the radiating effect of cooling, cooling when effectively realizing friction between rotating ring and the quiet ring, improve mechanical seal's life.
The above description is a preferred embodiment of the present invention, but the present invention should not be limited to the disclosure of the embodiment and the accompanying drawings, and therefore, all equivalents and modifications that can be accomplished without departing from the spirit of the present invention are within the protection scope of the present invention.
Claims (10)
1. A self-circulating double mechanical seal system, comprising: the mechanical seal assembly comprises a machine seal seat, an external thread pump water chute is arranged in the machine seal seat, a shaft hole is formed in the center of the machine seal seat and penetrates through the external thread pump water chute, a transmission main shaft is arranged in the external thread pump water chute for connection and transmission, the surface of the water chute of the external thread pump is provided with a water throwing hole, the front end surface and the rear end surface of the water chute of the external thread pump are respectively fixed with a first movable ring and a second movable ring, the first static ring is arranged by being clung to the inner side of the first movable ring, the second static ring is arranged by being clung to the inner side of the second movable ring, a pressure spring is arranged between the first static ring and the second static ring, a mechanical seal retainer ring is fixed at the outer side of the first static ring, a mechanical seal baffle is arranged at the outer side of the mechanical seal retainer ring, and the machine seal seat is provided with a cooling water inlet and a cooling water outlet, the cooling water inlet and the cooling water outlet are respectively communicated with the water guide groove of the external thread pump, and the cooling water inlet and the cooling water outlet are vertically arranged.
2. The self-circulating double mechanical seal system of claim 1, wherein: still including sealed circulation tank, be provided with compressed air import, machine on the sealed circulation tank and seal liquid export and machine and seal the liquid and return the mouth, pass through the pipe connection between the cooling water inlet on machine seal liquid export and the machine seal seat, pass through the pipe connection between the cooling water outlet on machine seal liquid returns the mouth and the machine seal seat, compressed air import and air compressor are connected.
3. The self-circulating double mechanical seal system of claim 1, wherein: a clearance of 1-2mm is kept between a water throwing hole formed in the surface of the water guide groove of the external thread pump and the inner surface of the machine seal seat.
4. The self-circulating double mechanical seal system of claim 1, wherein: the cooling water inlet is arranged in a direction perpendicular to the water throwing hole, and the cooling water outlet is arranged in a direction parallel to the water throwing hole.
5. The self-circulating double mechanical seal system of claim 1, wherein: and the second movable ring is fixed at the rear end of the water guide groove of the external thread pump through a clamp spring.
6. The self-circulating double mechanical seal system of claim 1, wherein: and sealing rings are arranged at the contact parts of the first movable ring and the second movable ring and the water guide groove of the external thread pump.
7. The self-circulating double mechanical seal system of claim 1, wherein: a sealing ring and a mechanical seal retainer ring are arranged at the contact position of the first static ring and the inner surface of the mechanical seal seat, and a sealing ring is arranged at the contact position of the second static ring and the inner surface of the mechanical seal seat.
8. The self-circulating double mechanical seal system of claim 1, wherein: and the machine seal seat is also provided with a screw hole connected with external equipment.
9. The self-circulating double mechanical seal system of claim 2, wherein: and a liquid level sensor and a liquid level observation window are arranged on the sealed circulating tank.
10. The self-circulating double mechanical seal system of claim 1, wherein: the machine seal retainer ring is designed into an inner inverted cone shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729498.3U CN210106602U (en) | 2019-05-21 | 2019-05-21 | Self-circulation double-end-face mechanical sealing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920729498.3U CN210106602U (en) | 2019-05-21 | 2019-05-21 | Self-circulation double-end-face mechanical sealing system |
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| Publication Number | Publication Date |
|---|---|
| CN210106602U true CN210106602U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920729498.3U Active CN210106602U (en) | 2019-05-21 | 2019-05-21 | Self-circulation double-end-face mechanical sealing system |
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| Country | Link |
|---|---|
| CN (1) | CN210106602U (en) |
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2019
- 2019-05-21 CN CN201920729498.3U patent/CN210106602U/en active Active
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