CN215333596U - Mechanical sealing device for tandem type double-end-face pump - Google Patents
Mechanical sealing device for tandem type double-end-face pump Download PDFInfo
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- CN215333596U CN215333596U CN202121031425.0U CN202121031425U CN215333596U CN 215333596 U CN215333596 U CN 215333596U CN 202121031425 U CN202121031425 U CN 202121031425U CN 215333596 U CN215333596 U CN 215333596U
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Abstract
The utility model relates to a mechanical sealing device for a tandem type double-end-face pump, which comprises: axle, axle sleeve, bush, first spring mechanism, manger plate ring, first rotating ring, first quiet ring, first gland, second spring mechanism, pumping ring, second rotating ring, the quiet ring of second and second gland, first spring mechanism includes: the second spring mechanism comprises a second spring seat, a second spring and a second push ring, a throttling ring is arranged between the second gland and the shaft sleeve, a driving ring is arranged on one side of the second gland, a first sealing surface is formed between the first movable ring and the first stationary ring, a backflow channel communicated with the first sealing surface is arranged in the first gland, a high-temperature medium at an outlet high-pressure point of the pump enters the backflow channel after being cooled by the heat exchanger, and an isolation liquid inlet channel, an isolation liquid outlet channel, a quenching liquid channel and a leakage channel are arranged in the second gland, so that the thermal isolation effect is achieved.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the field of mechanical sealing, in particular to a mechanical sealing device for a tandem type double-end-face pump.
[ background of the utility model ]
The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. 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 static ring and the dynamic ring are core components in the mechanical sealing device, a sealing surface is formed between the static ring and the dynamic ring, and when a medium in the device is a high-temperature medium, the heat of the high-temperature medium is easily conducted to the sealing surface, so that the sealing surface is damaged.
Therefore, there is a need to provide a mechanical seal device for a tandem double-ended pump that solves the above problems.
[ Utility model ] content
In order to solve the above problems, an object of the present invention is to provide a mechanical seal device for a tandem double-ended pump with thermal isolation.
In order to achieve the purpose, the utility model adopts the technical scheme that: a mechanical seal for a tandem double-ended pump, comprising: axle, axle sleeve, bush, first spring mechanism, manger plate ring, first rotating ring, first quiet ring, first gland, second spring mechanism, pumping ring, second rotating ring, the quiet ring of second and second gland, the axle sleeve is located epaxially, the bush cover is located on the axle sleeve, first spring mechanism includes: the first spring seat, the first spring and the first push ring, one end of the first spring is abutted against the first spring seat, the other end of the first spring is abutted against the first push ring, the first push ring is abutted against the first moving ring, the first stationary ring is connected with the first gland through a first pin, a first sealing surface is formed between the first moving ring and the first stationary ring, the first spring seat is sleeved on the bushing, the water retaining ring is sleeved on the first spring seat, the water retaining ring, the first spring seat and the bushing are connected through a first fixing piece, the second spring mechanism comprises a second spring seat, a second spring and a second push ring, one end of the second spring is abutted against the second spring seat, the other end of the second spring is abutted against the second push ring, the second push ring is abutted against the second moving ring, and the second spring seat is sleeved on the shaft sleeve, the pumping ring is sleeved on the second spring seat and connected with the second spring seat through a second fixing piece, the second stationary ring is connected with the second pressing cover through a second pin, a second sealing surface is formed between the second stationary ring and the second movable ring, the first pressing cover is connected with the second pressing cover through a third fixing piece, a throttling ring is arranged between the second pressing cover and the shaft sleeve, a driving ring is arranged on one side of the second pressing cover and connected with the shaft sleeve through a fourth fixing piece, a backflow channel communicated with the first sealing surface is arranged in the first pressing cover, a high-temperature medium at an outlet high-pressure point of the pump enters the backflow channel after being cooled by a heat exchanger, and an isolating liquid inlet channel, an isolating liquid outlet channel, a quenching liquid channel and a leakage channel which are communicated with the second sealing surface are arranged in the second pressing cover.
Preferably, a mechanical seal device for a tandem type double-end-face pump in the present invention is further configured to: the outer wall surface of the water retaining ring is provided with a plurality of channels which are arranged side by side.
Preferably, a mechanical seal device for a tandem type double-end-face pump in the present invention is further configured to: one side of first quiet ring is equipped with the clamp plate one side of clamp plate is equipped with the snap ring, first gland is equipped with the gland draw-in groove with snap ring matched with.
Preferably, a mechanical seal device for a tandem type double-end-face pump in the present invention is further configured to: one side of the second gland is provided with an installation sheet, the shaft sleeve is provided with a shaft sleeve clamping groove matched with the installation sheet, and the installation sheet is connected with the second gland through a fifth fixing piece.
Preferably, a mechanical seal device for a tandem type double-end-face pump in the present invention is further configured to: be equipped with the axle sleeve sealing washer between axle sleeve and the axle, be equipped with the bush sealing washer between bush and the axle sleeve, be equipped with first rotating ring sealing washer between first rotating ring and the bush, be equipped with first quiet ring sealing washer between first quiet ring and the first gland, be equipped with the second rotating ring sealing washer between second rotating ring and the axle sleeve, be equipped with the quiet ring sealing washer of second between quiet ring of second and the second gland, be equipped with first gland sealing washer between first gland and the second gland.
Preferably, a mechanical seal device for a tandem type double-end-face pump in the present invention is further configured to: the shaft sleeve sealing ring, the lining sealing ring, the first movable ring sealing ring, the first static ring sealing ring, the second movable ring sealing ring, the second static ring sealing ring and the first gland sealing ring are all O-shaped rings.
Preferably, a mechanical seal device for a tandem type double-end-face pump in the present invention is further configured to: the first fixing piece, the second fixing piece and the fourth fixing piece are all hexagon socket head cap screws, and the third fixing piece is a hexagon socket head cap screw.
Compared with the prior art, the utility model has the following beneficial effects: the serial double-end-face mechanical sealing device has a simple structure and is convenient to install, and the sealing performance is greatly improved by arranging two sets of static rings and moving rings.
[ description of the drawings ]
Fig. 1 is a schematic cross-sectional structural view of a mechanical seal device for a tandem double-ended pump according to the present invention.
In fig. 1: 1. a shaft, 2, a shaft sleeve, 20, a shaft sleeve sealing ring, 21, a shaft sleeve clamping groove, 3, a bushing, 30, a bushing sealing ring, 4, a first spring mechanism, 40, a first spring seat, 41, a first spring, 42, a first push ring, 5, a water retaining ring, 50, a channel, 51, a first fixing member, 6, a first movable ring, 60, a first movable ring sealing ring, 61, a first sealing surface, 7, a first stationary ring, 70, a first pin, 71, a first stationary ring sealing ring, 72, a pressure plate, 73, a snap ring, 8, a first gland, 80, a gland clamping groove, 81, a first gland sealing ring, 82, a third fixing member, 83, a backflow channel, 9, a second spring mechanism, 90, a second spring seat, 91, a second spring, 92, a second push ring, 10, a pumping ring, 100, a second fixing member, 11, a second movable ring, 110, a second movable ring sealing ring, 12, a second ring, 120. a second stationary ring seal ring 121, a second pin 122, a second sealing surface 13, a second gland 130, a restrictor ring 131, a mounting plate 132, a drive ring 133, a fourth fixing member 134, a fifth fixing member 135, a spacer inlet passage 136, a spacer outlet passage 137, a quench liquid passage 138, and a leakage passage.
[ detailed description ] embodiments
A mechanical seal for a tandem double-ended pump according to the present invention is described in further detail below with reference to specific embodiments.
Referring to fig. 1, a mechanical seal device for a tandem type double-end-face pump includes: the pump comprises a shaft 1, a shaft sleeve 2, a bushing 3, a first spring mechanism 4, a water retaining ring 5, a first movable ring 6, a first static ring 7, a first gland 8, a second spring mechanism 9, a pumping ring 10, a second movable ring 11, a second static ring 12 and a second gland 13.
The axle sleeve 2 cover is located on axle 1, be equipped with axle sleeve sealing washer 20 between axle sleeve 2 and the axle 1, 3 covers of bush are located on axle sleeve 2, be equipped with bush sealing washer 30 between bush 3 and the axle sleeve 2, first spring mechanism 4 includes: the first spring seat 40, the first spring 41 and the first push ring 42, one end of the first spring 41 abuts against the first spring seat 40, the other end of the first spring 41 abuts against the first push ring 42, the first push ring 42 abuts against the first movable ring 6, the first stationary ring 7 is connected with the first gland 8 through a first pin 70, a first movable ring sealing ring 60 is arranged between the first movable ring 6 and the bushing 3, a first stationary ring sealing ring 71 is arranged between the first stationary ring 7 and the first gland 8, a first sealing surface 61 is formed between the first movable ring 6 and the first stationary ring 7, a pressing plate 72 is arranged on one side of the first stationary ring 7, a clamping ring 73 is arranged on one side of the pressing plate 72, and a gland clamping groove 80 matched with the clamping ring 73 is arranged on the first gland 8.
The first spring seat 40 is sleeved on the bushing 3, the water retaining ring 5 is sleeved on the first spring seat 40, and the outer wall surface of the water retaining ring 5 is provided with a plurality of channels 50 which are arranged side by side. The water stop ring 5, the first spring seat 40 and the bushing 3 are connected by a first fixing member 51, and in the present embodiment, the first fixing member 51 is a socket head cap set screw. The second spring mechanism 9 includes a second spring seat 90, a second spring 91 and a second push ring 92, one end of the second spring 91 abuts against the second spring seat 90, the other end of the second spring 91 abuts against the second push ring 92, the second push ring 92 abuts against the second movable ring 11, the second spring seat 90 is sleeved on the shaft sleeve 2, the pumping ring 10 is sleeved on the second spring seat 90 and connected with the second spring seat 90 through a second fixing member 100, in this embodiment, the second fixing member 100 is a hexagon socket head cap end set screw, and the pumping ring 10 functions to make the isolation liquid flow circularly. A second stationary ring sealing ring 120 is arranged between the second stationary ring 12 and the second gland 13, the second stationary ring 12 is connected with the second gland 13 through a second pin 121, a second moving ring sealing ring 110 is arranged between the second moving ring 11 and the shaft sleeve 2, a second sealing surface 122 is formed between the second stationary ring 12 and the second moving ring 11, a first gland sealing ring 81 is arranged between the first gland 8 and the second gland 13, the first gland 8 is connected with the second gland 13 through a third fixing member 82, and in the embodiment, the third fixing member 82 is an inner hexagonal cylinder head screw.
A throttle ring 130 is disposed between the second gland 13 and the shaft sleeve 2, an installation plate 131 is disposed on one side of the second gland 13, a driving ring 132 is disposed on one side of the installation plate 131, the driving ring 132 is connected with the shaft sleeve 2 through a fourth fixing member 133, in this embodiment, the fourth fixing member 133 is a hexagon socket set screw, the shaft sleeve 2 is provided with a shaft sleeve slot 21 matched with the installation plate 131, and the installation plate 131 is connected with the second gland 13 through a fifth fixing member 134.
A backflow channel 83 communicated with the first sealing surface 61 is arranged in the first gland 8, a high-temperature medium at an outlet high-pressure point of the pump enters the backflow channel 83 after being cooled by a heat exchanger, an isolation liquid inlet channel 135, an isolation liquid outlet channel 136, a quenching liquid channel 137 and a leakage channel 138 which are communicated with the second sealing surface 122 are arranged in the second gland 13, and in the embodiment, the shaft sleeve sealing ring 20, the bushing sealing ring 30, the first moving ring sealing ring 60, the first stationary ring sealing ring 71, the second moving ring sealing ring 110, the second stationary ring sealing ring 120 and the first gland sealing ring 81 are all O-rings.
The working principle of the mechanical sealing device for the tandem type double-end-face pump is as follows: the driving ring 132 drives the shaft 1 to rotate, so as to drive the shaft sleeve 2, the bushing 3, the first spring mechanism 4, the water retaining ring 5, the first movable ring 6, the second spring mechanism 9, the pumping ring 10 and the second movable ring 11 to rotate, the first stationary ring 7, the first gland 8, the second stationary ring 12 and the second gland 13 are stationary members, a first sealing surface 61 is formed between the first movable ring 6 and the first stationary ring 7, the first spring mechanism 4 is used for providing compensation force for the first sealing surface 61, the water retaining ring 5 can prevent a high-temperature medium in the equipment from flowing to the first sealing surface 61, and the high-temperature medium at an outlet high-pressure point of the pump enters the backflow channel 83 after being cooled by the heat exchanger, so that not only a thermal isolation effect is achieved, but also energy loss is reduced. The second sealing surface 122 is formed between the second movable ring 11 and the second stationary ring 12, the second spring mechanism 9 is used for providing compensation force for the second sealing surface 122, and the isolation fluid flows in from the isolation fluid inlet passage 135 and flows out from the isolation fluid outlet passage 136, so that the second sealing surface 122 can be cooled and washed.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (7)
1. A serial-type double-end-face mechanical seal device for pump which characterized in that: the method comprises the following steps: axle, axle sleeve, bush, first spring mechanism, manger plate ring, first rotating ring, first quiet ring, first gland, second spring mechanism, pumping ring, second rotating ring, the quiet ring of second and second gland, the axle sleeve is located epaxially, the bush cover is located on the axle sleeve, first spring mechanism includes: the first spring seat, the first spring and the first push ring, one end of the first spring is abutted against the first spring seat, the other end of the first spring is abutted against the first push ring, the first push ring is abutted against the first moving ring, the first stationary ring is connected with the first gland through a first pin, a first sealing surface is formed between the first moving ring and the first stationary ring, the first spring seat is sleeved on the bushing, the water retaining ring is sleeved on the first spring seat, the water retaining ring, the first spring seat and the bushing are connected through a first fixing piece, the second spring mechanism comprises a second spring seat, a second spring and a second push ring, one end of the second spring is abutted against the second spring seat, the other end of the second spring is abutted against the second push ring, the second push ring is abutted against the second moving ring, and the second spring seat is sleeved on the shaft sleeve, the pumping ring is sleeved on the second spring seat and connected with the second spring seat through a second fixing piece, the second stationary ring is connected with the second pressing cover through a second pin, a second sealing surface is formed between the second stationary ring and the second movable ring, the first pressing cover is connected with the second pressing cover through a third fixing piece, a throttling ring is arranged between the second pressing cover and the shaft sleeve, a driving ring is arranged on one side of the second pressing cover and connected with the shaft sleeve through a fourth fixing piece, a backflow channel communicated with the first sealing surface is arranged in the first pressing cover, a high-temperature medium at an outlet high-pressure point of the pump enters the backflow channel after being cooled by a heat exchanger, and an isolating liquid inlet channel, an isolating liquid outlet channel, a quenching liquid channel and a leakage channel which are communicated with the second sealing surface are arranged in the second pressing cover.
2. A tandem double-ended pump mechanical seal according to claim 1, wherein: the outer wall surface of the water retaining ring is provided with a plurality of channels which are arranged side by side.
3. A tandem double-ended pump mechanical seal according to claim 1, wherein: one side of first quiet ring is equipped with the clamp plate one side of clamp plate is equipped with the snap ring, first gland is equipped with the gland draw-in groove with snap ring matched with.
4. A tandem double-ended pump mechanical seal according to claim 1, wherein: one side of the second gland is provided with an installation sheet, the shaft sleeve is provided with a shaft sleeve clamping groove matched with the installation sheet, and the installation sheet is connected with the second gland through a fifth fixing piece.
5. A tandem double-ended pump mechanical seal according to claim 1, wherein: be equipped with the axle sleeve sealing washer between axle sleeve and the axle, be equipped with the bush sealing washer between bush and the axle sleeve, be equipped with first rotating ring sealing washer between first rotating ring and the bush, be equipped with first quiet ring sealing washer between first quiet ring and the first gland, be equipped with the second rotating ring sealing washer between second rotating ring and the axle sleeve, be equipped with the quiet ring sealing washer of second between quiet ring of second and the second gland, be equipped with first gland sealing washer between first gland and the second gland.
6. A tandem double-ended pump mechanical seal according to claim 5, wherein: the shaft sleeve sealing ring, the lining sealing ring, the first movable ring sealing ring, the first static ring sealing ring, the second movable ring sealing ring, the second static ring sealing ring and the first gland sealing ring are all O-shaped rings.
7. A tandem double-ended pump mechanical seal according to claim 1, wherein: the first fixing piece, the second fixing piece and the fourth fixing piece are all hexagon socket head cap screws, and the third fixing piece is a hexagon socket head cap screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121031425.0U CN215333596U (en) | 2021-05-14 | 2021-05-14 | Mechanical sealing device for tandem type double-end-face pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121031425.0U CN215333596U (en) | 2021-05-14 | 2021-05-14 | Mechanical sealing device for tandem type double-end-face pump |
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| Publication Number | Publication Date |
|---|---|
| CN215333596U true CN215333596U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121031425.0U Active CN215333596U (en) | 2021-05-14 | 2021-05-14 | Mechanical sealing device for tandem type double-end-face pump |
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| CN (1) | CN215333596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526258A (en) * | 2022-01-21 | 2022-05-24 | 中密控股股份有限公司 | Three-stage series shaft seal device and nuclear main pump equipment |
-
2021
- 2021-05-14 CN CN202121031425.0U patent/CN215333596U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526258A (en) * | 2022-01-21 | 2022-05-24 | 中密控股股份有限公司 | Three-stage series shaft seal device and nuclear main pump equipment |
| CN114526258B (en) * | 2022-01-21 | 2024-04-02 | 中密控股股份有限公司 | Three-stage series shaft seal device and nuclear main pump equipment |
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