CN109163097B - Mechanical sealing device of ultrafine particle ball mill - Google Patents
Mechanical sealing device of ultrafine particle ball mill Download PDFInfo
- Publication number
- CN109163097B CN109163097B CN201811285543.7A CN201811285543A CN109163097B CN 109163097 B CN109163097 B CN 109163097B CN 201811285543 A CN201811285543 A CN 201811285543A CN 109163097 B CN109163097 B CN 109163097B
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- sealing
- seal
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- 238000007789 sealing Methods 0.000 title claims abstract description 104
- 239000011882 ultra-fine particle Substances 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000007667 floating Methods 0.000 claims abstract description 40
- 238000005086 pumping Methods 0.000 claims abstract description 39
- 230000003068 static effect Effects 0.000 claims abstract description 26
- 238000002955 isolation Methods 0.000 claims abstract description 14
- 210000004907 gland Anatomy 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 38
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention provides a mechanical sealing device of an ultrafine particle ball mill, which comprises: the device comprises a shaft sleeve, a main sealing assembly, an isolated liquid pumping assembly and a gas floating ring assembly; the shaft sleeve is sleeved on the rotating shaft; the main seal assembly comprises a main seal static ring, a main seal movable ring and a main seal compensation spring; the main seal static ring and the main seal moving ring form a main seal friction pair, and an isolating liquid channel is formed between the main seal static ring, the main seal moving ring and the shaft sleeve; the isolation liquid pumping assembly is used for pumping isolation liquid to the isolation liquid channel and comprises a pumping ring, a liquid inlet pipe, a liquid outlet pipe and a secondary sealing assembly, wherein the liquid inlet pipe and the liquid outlet pipe are arranged on the pumping ring; the gas floating ring assembly comprises an air inlet pipe and a three-stage sealing assembly, and the gas floating ring assembly conveys gas to a cavity near the outer side of the main sealing friction pair. On the basis of the traditional sealing structure, the invention performs double protection on the sealing surface by introducing isolating liquid and gas into the sealing surface, and effectively prevents the ultrafine particle medium from being adhered near the sealing friction pair and entering the gap of the sealing surface.
Description
Technical Field
The invention relates to a mechanical sealing device of an ultrafine particle ball mill.
Background
The mechanical seal device is a shaft seal device of a rotary machine, and is commonly used for equipment such as a centrifugal pump, a centrifugal machine, a reaction kettle, a compressor and the like. The mechanical sealing device is a device for preventing fluid leakage, which is formed by keeping the joint and relative sliding of one or a plurality of pairs of sealing surfaces which slide relatively perpendicular to the rotating shaft under the action of fluid pressure and the elasticity (or magnetic force) of the compensating mechanism and the cooperation of auxiliary sealing.
In the conventional mechanical seal device, in order to ensure the sealing effect, the sealing surfaces are kept in dynamic contact with each other, and the gap between the sealing surfaces is regarded as a sealing state in a state of 5 μ, so that the sealing effect can be achieved.
However, in the case of the ultra-fine particle ball mill, particularly when applied to a nano-sized ultra-fine particle medium having a diameter of less than 5 mu, the ultra-fine particle medium is easily introduced between the sealing surfaces, and particularly the ultra-fine particle medium has viscosity, and is accumulated between the sealing surfaces, so that the sealing effect of the sealing device is easily affected. Making conventional mechanical seals difficult to adapt in the case of ultra-fine particulate media.
Therefore, how to provide a mechanical sealing device of a ball mill, which can adapt to ultrafine particle medium materials, is a problem to be solved in the industry.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a mechanical sealing device of an ultrafine particle ball mill, which is used for double protection of a sealing surface on the basis of a traditional sealing structure: the isolating liquid is pumped to the sealing surface through the isolating liquid pumping assembly, and the isolating liquid washes the ultrafine particle medium entering near the sealing surface into the medium container, so that the ultrafine particle medium is effectively prevented from being bonded near the sealing friction pair; and the gas is introduced into the sealing surface through the gas floating ring assembly, and the gas blows out ultrafine particle (nanoscale or less than 5 mu diameter) media entering the gap of the sealing surface, so that the influence of the ultrafine particles on the main seal is effectively prevented.
In order to achieve the above object, the present invention provides a mechanical seal device of an ultra fine particle ball mill, comprising: the device comprises a shaft sleeve, a main sealing assembly, an isolated liquid pumping assembly and a gas floating ring assembly;
The shaft sleeve is sleeved on the rotating shaft;
The main seal assembly comprises a main seal static ring, a main seal movable ring and a main seal compensation spring; the main seal static ring and the main seal moving ring form a main seal friction pair, and an isolating liquid channel is formed between the main seal static ring, the main seal moving ring and the shaft sleeve, so that isolating liquid can conveniently enter the main seal friction pair;
The isolation liquid pumping assembly is used for pumping isolation liquid to the isolation liquid channel and comprises a pumping ring, a liquid inlet pipe and a liquid outlet pipe which are arranged on the pumping ring, and a secondary sealing assembly used for sealing the pumping ring;
The gas floating ring assembly comprises an air inlet pipe and a three-stage sealing assembly, and the gas floating ring assembly conveys gas to a cavity near the outer side of the main sealing friction pair through the air inlet pipe.
In the invention, the main sealing component seals the ball mill, in order to prevent the ultrafine particle medium from being adhered near the main sealing friction pair, the spacer fluid is pumped to the spacer fluid channel in the sealing process through the forced circulation generated by the pumping ring of the spacer fluid pumping component, and the influence of the ultrafine particle medium on the sealing surface is eliminated. The main seal assembly is optimized into a movable ring compensation spring structure, the main seal compensation spring of the main seal assembly is placed in clean isolation sealing liquid, and meanwhile, the main seal movable ring rotates along with the shaft sleeve at a high speed, so that the influence of ultrafine particle medium on sealing is minimized. Meanwhile, in order to prevent ultrafine particle media from entering gaps of the sealing surfaces and being bonded, gas is introduced into the sealing surfaces through the gas floating ring assembly, and the gas blows out ultrafine particle (nanoscale or less than 5 mu diameter) media entering the gaps of the sealing surfaces, so that the influence of the ultrafine particles on the main seal is effectively prevented.
In the present invention, the spacer fluid is a medium solution or other liquid that is soluble in the medium solution. The pressure of the isolating liquid is 1-3kg/cm 2 higher than the pressure of the medium side.
In the invention, in order to avoid chemical reaction between the gas and the ultrafine particle medium or the isolating liquid, the gas introduced into the gas floating ring assembly is inert gas, and the pressure of the gas is higher than the side pressure of the medium by 1-3kg/cm 2.
According to another embodiment of the invention, the front end of the shaft sleeve is provided with a first stepped boss, and the side surface of the first step of the first stepped boss is provided with a round hole for installing the main seal compensation spring. The first stepped boss is positioned at the front end of the isolating liquid channel, so that the isolating liquid channel forms a container for containing isolating liquid, and enough isolating liquid is used for flushing the ultrafine particle medium of the main sealing friction pair.
According to another embodiment of the invention, the main seal assembly further comprises a first moving ring seat for embedding the main seal moving ring, a stationary ring pressing plate for fixing the main seal stationary ring and a seal gland;
The inner side of the first movable ring seat is provided with a second stepped boss, and the base of the second stepped boss is sleeved on the outer side of the second step of the first stepped boss; the main seal compensation spring is arranged in the round hole and is fixedly connected with the side surface of the second step-type boss; a first transmission pin is arranged between the shaft sleeve and the first movable ring seat;
An axial floating O-shaped ring is arranged between the second step of the first step-shaped boss and the first step of the second step-shaped boss; the axial floating O-shaped ring and the main seal compensation spring of the main seal movable ring form bidirectional balance, so that the seal of the main seal assembly is adapted to the change of internal and external pressure.
A second step of the first step-type boss is provided with a blocking ring, and correspondingly, the inner side of the base of the second step-type boss is provided with an annular groove for accommodating the blocking ring; the barrier ring effectively prevents the axial floating O-ring from sticking to the first stepped boss while also providing flexibility to the main seal assembly during dynamic balancing of the sealing process.
The static ring pressing plate is arranged on the main seal static ring, an anti-rotation pin is arranged between the main seal static ring and the sealing gland, the sealing gland is connected with the static ring pressing plate through a clamp spring, and the static ring pressing plate limits and protects the main seal static ring to prevent the main seal static ring from being pushed out by isolating liquid with pressure higher than that of a medium.
According to another embodiment of the invention, the spacer fluid pumping assembly is arranged at the rear end of the main sealing assembly, and the spacer fluid pumping assembly further comprises a sealing cavity arranged at the outer side of the pumping ring; the sealing cavity is connected with the sealing gland through a connecting screw; the liquid outlet pipe and the liquid inlet pipe are respectively provided with a pipe joint, and the liquid outlet pipe, the liquid inlet pipe and the pipe joints are all fixed in the sealed cavity;
the second-stage sealing assembly comprises a second stationary ring, a second movable ring, a second compensation spring, a second movable ring seat for embedding the second movable ring and a second spring seat for embedding the second spring; the second movable ring seat is sleeved on the shaft sleeve, and the second spring seat is sleeved on the shaft sleeve.
According to another embodiment of the invention, the pumping ring is fixed on the spring seat, so that the connecting parts are reduced, and meanwhile, the space of the mechanical sealing device is saved, and the weight is reduced.
According to another embodiment of the invention, the rear end of the sleeve is provided with a driving key and a second driving pin. The drive key provides reliable torque transmission and drives the second moving ring to rotate through the second drive pin and the set screw on the second spring seat.
According to another specific embodiment of the invention, the gas floating ring assembly is arranged on the outer side of the main sealing assembly, and the gas inlet pipe is fixed in the sealing gland;
the tertiary seal assembly includes: the third spring seat, the third spring, the lining ring pressing plate and the floating ring pressing cover; the floating ring gland is sleeved on the outer side of the first movable ring seat, an annular cavity is formed between the floating ring gland and the first movable ring seat, the third spring seat is arranged in the annular cavity and sleeved on the outer side of the first movable ring seat, and the lining ring pressing plate is fixed on an opening of the annular cavity and fixedly connected with the third spring;
And an air flow channel of the air floating ring assembly is formed among the lining ring pressing plate, the static ring pressing plate and the sealing gland, and air of the air inlet pipe enters the air flow channel and enters a cavity near the outer side of the main sealing friction pair.
According to another specific embodiment of the invention, the front end of the shaft sleeve is fixed on the rotating shaft through a plurality of radial enclasping screws, and at least two of the enclasping screws are surface contact screws; the shaft sleeve is firmly held tightly by the surface contact type screw, so that the fixation is stable.
The inner side of the shaft sleeve is provided with two sections of matching surfaces which are arranged at two ends of the shaft sleeve; the sleeve is sleeved with two positioning O-shaped rings. A certain gap is allowed between the rear end of the shaft sleeve and the rotating shaft, and the shaft sleeve is positioned through two positioning O-shaped rings, so that the shaft sleeve can be conveniently installed, dismounted and overhauled. The arrangement of the double-positioning O-shaped ring can improve the reliability of the sealing point of the shaft sleeve and the precision of the whole sealing device.
According to another embodiment of the invention, the front end of the hugging screw is provided with a driving ring. And the driving ring is used for determining reliable axial positioning through enclasping the screw, so that torque transmission is realized.
According to another embodiment of the invention, the mechanical sealing device further comprises a limiting plate.
In the invention, all parts are preassembled through the O-shaped ring, no rigid contact exists, the perfect fit of the sealing friction pair is ensured, and the reliability and the adaptability of the sealing device are improved.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of a mechanical seal device of an ultrafine particle ball mill of example 1;
fig. 2 is an enlarged partial schematic view of the mechanical seal device of the ultra fine particle ball mill of example 1.
Detailed Description
Example 1
This embodiment provides a mechanical seal device for an ultra-fine particle ball mill, as shown in fig. 1-2, comprising: shaft sleeve 301, main seal assembly, spacer fluid pumping assembly, and gas floating ring assembly.
The shaft sleeve 301 is sleeved on the rotating shaft; the front end of the sleeve 301 is provided with a first stepped boss, and a circular hole (not shown in the figure) for embedding the main seal compensation spring 123 is provided on the side of the first step 61 of the first stepped boss. The front end of the shaft sleeve 301 is fixed on the rotating shaft through a plurality of radial enclasping screws 303, and at least two of the enclasping screws 303 are surface contact screws; the shaft sleeve 301 is tightly held by the surface contact type screw, so that the fixation is stable. The inner side of the shaft sleeve 301 is provided with two sections of matching surfaces (not shown in the figure), and the two sections of matching surfaces (not shown in the figure) are arranged at two ends of the shaft sleeve 301; the sleeve is sleeved with two locating O-rings 302. A certain clearance is allowed between the rear end of the shaft sleeve 301 and the rotating shaft, and the shaft sleeve is positioned by two positioning O-shaped rings 302, so that the shaft sleeve is convenient to install, disassemble and overhaul. The arrangement of the double positioning O-shaped rings 302 can improve the reliability of the sealing point of the shaft sleeve 301 and the precision of the whole sealing device. The front end of the enclasping screw 303 is provided with a driving ring 304, and the driving ring 304 determines reliable axial positioning through the enclasping screw 303, so that torque transmission is realized.
The main seal assembly comprises a main seal static ring 111, a main seal dynamic ring 121 and a main seal compensation spring 123; the main seal static ring 111 and the main seal dynamic ring 121 form a main seal friction pair, and an isolating liquid channel is formed between the main seal static ring 111, the main seal dynamic ring 121 and the shaft sleeve 301, so that isolating liquid can enter the main seal friction pair conveniently; the first stepped boss is positioned at the front end of the isolating liquid channel, so that the isolating liquid channel forms a container for containing isolating liquid, and enough isolating liquid is used for flushing the ultrafine particle medium of the main sealing friction pair. The main seal assembly further includes a first ring seat 122 for embedding the main seal ring 121, a stationary ring pressure plate 115 for fixing the main seal stationary ring 111, and a seal gland 113.
The inner side of the first movable ring seat 122 is provided with a second stepped boss, and the base 51 of the second stepped boss is sleeved outside the second step 62 of the first stepped boss; the main seal compensation spring 123 is embedded in a round hole (not shown in the figure) and is fixedly connected with the side surface of the second step 53 of the second step boss; a first drive pin 126 is disposed between the bushing 301 and the first collar 122.
An axial floating O-ring 124 is arranged between the second step 62 of the first stepped boss and the first step 52 of the second stepped boss; the axially floating O-ring 124 forms a bi-directional balance with the main seal compensation spring 123 of the main seal ring 121, allowing the seal of the main seal assembly to accommodate changes in internal and external pressures.
The second step 62 of the first stepped boss is provided with a blocking ring 125, and correspondingly, the inner side of the base 51 of the second stepped boss is provided with an annular groove (not shown in the figure) for accommodating the blocking ring 125; the barrier ring 125 effectively prevents the axial floating O-ring 124 from sticking to the first stepped boss while also providing flexibility to the main seal assembly during dynamic balancing of the sealing process.
The stationary ring pressing plate 115 is inlaid on the main seal stationary ring 111, an anti-rotation pin 114 is arranged between the main seal stationary ring 111 and the seal pressing cover 113, the seal pressing cover 113 is connected with the stationary ring pressing plate 115 through a clamp spring 116, the stationary ring pressing plate 115 performs limit protection on the main seal stationary ring 111, and the main seal stationary ring 111 is prevented from being pushed out by isolating liquid with pressure higher than medium.
In this embodiment, the main seal assembly seals the ball mill.
To prevent the ultra-fine particulate media from sticking near the primary seal friction pair, the spacer fluid is pumped to the spacer fluid channel during the sealing process by forced circulation created by the pumping ring 231 of the spacer fluid pumping assembly, eliminating the effects of the ultra-fine particulate media on the sealing surface. The main seal assembly is optimized into a dynamic ring compensation spring structure, the main seal compensation spring 123 of the main seal assembly is placed in clean isolation sealing liquid, and meanwhile, the main seal dynamic ring 121 rotates along with the shaft sleeve 301 at a high speed, so that the influence of ultrafine particle medium on sealing is minimized.
The isolation liquid pumping assembly is used for pumping isolation liquid to the isolation liquid channel, and comprises a pumping ring 231, a liquid inlet pipe 233 and a liquid outlet pipe 232 which are arranged on the pumping ring 231, and a secondary sealing assembly used for sealing the pumping ring 231; the spacer fluid pumping assembly is disposed at the rear end of the main seal assembly, and further includes a seal cavity 234 disposed outside the pumping ring 231; the sealing cavity 234 is coupled with the sealing gland 113 by a coupling screw 312; the liquid outlet pipe 232 and the liquid inlet pipe 233 are respectively provided with a pipe joint 235, and the liquid outlet pipe 232, the liquid inlet pipe 233 and the pipe joint 235 are respectively fixed in the sealing cavity 234;
The secondary seal assembly includes a second stationary ring 211, a second movable ring 221, a second compensation spring 223, a second movable ring seat 224 for embedding the second movable ring 221, and a second spring seat 225 for embedding the second spring 223; the second movable ring seat 224 is sleeved on the shaft sleeve 301, and the second spring seat 225 is sleeved on the shaft sleeve 301.
The pumping ring 231 is fixed to the second spring seat 225 by the fixing screw 226, so that the connection parts are reduced, and at the same time, the space of the mechanical sealing device is saved, and the weight is reduced.
The rear end of the sleeve 301 is provided with a drive key 310 and a second drive pin 311. The drive key 310 provides reliable torque transmission and drives rotation of the second ring 221 via the second drive pin 311 and the set screw on the second spring seat 225.
The spacer fluid is a dielectric solution or other liquid that is soluble with the dielectric solution. The pressure of the isolating liquid is 1-3kg/cm 2 higher than the pressure of the medium side.
In order to prevent ultrafine particle medium from entering the gap of the sealing surface and being bonded, gas is introduced into the sealing surface through the gas floating ring assembly, and the gas blows out ultrafine particle (nanoscale or less than 5 mu diameter) medium entering the gap of the sealing surface, so that the influence of the ultrafine particles on the main seal is effectively prevented.
The gas floating ring assembly comprises a gas inlet pipe 401 and a three-stage sealing assembly, and the gas floating ring assembly conveys gas to the main sealing friction pair through the gas inlet pipe 401. The gas floating ring assembly is arranged at the outer side of the main sealing assembly, and the gas inlet pipe 401 is fixed in the sealing gland 113; the tertiary seal assembly includes: a third spring seat 404, a third spring 403, a liner ring pressure plate 405, a floating ring gland 402; the floating ring gland 402 is sleeved on the outer side of the first movable ring seat 122, an annular cavity is formed between the floating ring gland 402 and the first movable ring seat 122, the third spring seat 404 is arranged in the annular cavity and sleeved on the outer side of the first movable ring seat 122, and the lining ring pressure plate 405 is fixed on an opening of the annular cavity and fixedly connected with the third spring 403; the gas floating ring assembly gas flow channel is formed among the lining ring pressing plate 405, the static ring pressing plate 115 and the sealing gland 113, the gas inlet pipe is connected with a gas source through the adapter 406, and the gas accessed by the gas inlet pipe 401 enters the gas flow channel and enters the main sealing friction pair. In order to avoid chemical reaction between the gas and the ultrafine particle medium or the isolating liquid, the gas introduced into the gas floating ring assembly is inert gas, and the pressure of the gas is higher than the side pressure of the medium by 1-3kg/cm 2.
The mechanical seal device further includes a limiting plate 305 fixed to the outer side of the driving ring 304 and the front side of the floating ring gland 402 by set screws 306, respectively, to limit the main seal assembly.
In this embodiment, a main sealing static ring O-ring 112, a second moving ring O-ring 222, a second static ring O-ring 212, a first auxiliary O-ring 308, and a second auxiliary O-ring 309 are further provided to form an auxiliary sealing assembly, and each component is preassembled through the O-ring, so that no rigid contact exists, perfect fit of a sealing friction pair is ensured, and reliability and adaptability of the sealing device are improved.
While the invention has been described in terms of preferred embodiments, it is not intended to limit the scope of the invention. It is intended that all modifications within the scope of the invention, i.e., all equivalents thereof, be embraced by the invention as they come within their scope without departing from the invention.
Claims (7)
1. A mechanical seal device for an ultra-fine particle ball mill, the mechanical seal device comprising: the device comprises a shaft sleeve, a main sealing assembly, an isolated liquid pumping assembly and a gas floating ring assembly; the shaft sleeve is sleeved on the rotating shaft; the main seal assembly comprises a main seal static ring, a main seal moving ring and a main seal compensation spring; the main seal stationary ring and the main seal movable ring form a main seal friction pair, and an isolating liquid channel is formed among the main seal stationary ring, the main seal movable ring and the shaft sleeve so as to facilitate isolating liquid to enter a cavity near the outer side of the main seal friction pair; the isolation liquid pumping assembly is used for pumping isolation liquid to the isolation liquid channel and comprises a pumping ring, a liquid inlet pipe and a liquid outlet pipe which are arranged near the pumping ring, and a secondary sealing assembly used for sealing the pumping ring; the gas floating ring assembly comprises an air inlet pipe and a three-stage sealing assembly, and the gas floating ring assembly conveys gas into a cavity near the outer side of the main sealing friction pair through the air inlet pipe;
The front end of the shaft sleeve is provided with a first stepped boss, and a round hole for installing the main seal compensation spring is formed in the side face of a first step of the first stepped boss;
The main seal assembly further comprises a first movable ring seat, a stationary ring pressing plate and a seal gland, wherein the first movable ring seat is used for embedding the main seal movable ring, and the stationary ring pressing plate is used for fixing the main seal stationary ring; the inner side of the first movable ring seat is provided with a second stepped boss, and the base of the second stepped boss is sleeved on the outer side of the second step of the first stepped boss; the main seal compensation spring is arranged in the round hole and is fixedly connected with the side surface of the second step type boss; a transmission pin is arranged between the shaft sleeve and the first movable ring seat; an axial floating O-shaped ring is arranged between the second step of the first step-shaped boss and the first step of the second step-shaped boss; a blocking ring is arranged on a second step of the first stepped boss, and correspondingly, an annular groove for accommodating the blocking ring is arranged on the inner side of a base of the second stepped boss; the static ring pressing plate is arranged on the main seal static ring, an anti-rotation pin is arranged between the main seal static ring and the seal gland, and the seal gland is connected with the static ring pressing plate through a clamp spring;
The front end of the shaft sleeve is fixed on the rotating shaft through a plurality of radial enclasping screws, and at least two of the enclasping screws are surface contact screws; the inner side of the shaft sleeve is provided with two sections of matching surfaces, and the two sections of matching surfaces are arranged at two ends of the shaft sleeve; the sleeve is sleeved with two positioning O-shaped rings.
2. The mechanical seal of claim 1, wherein the spacer fluid pumping assembly is disposed at a rear end of the main seal assembly, the spacer fluid pumping assembly further comprising a seal cavity disposed outside the pumping ring; the sealing cavity is connected with the sealing gland through a connecting screw; the liquid outlet pipe and the liquid inlet pipe are respectively provided with a pipe joint, and the liquid outlet pipe, the liquid inlet pipe and the pipe joints are all fixed in the sealed cavity; the secondary sealing assembly comprises a second stationary ring, a second movable ring, a second compensation spring, a second movable ring seat for embedding the second movable ring, and a second spring seat for installing the second compensation spring; the second movable ring seat is sleeved on the shaft sleeve, and the second spring seat is sleeved on the shaft sleeve.
3. The mechanical seal of claim 2, wherein the pumping ring is secured to the second spring seat.
4. The mechanical seal of claim 2 wherein the rear end of the sleeve is provided with a drive key and a second drive pin.
5. The mechanical seal of claim 2, wherein said gas floating ring assembly is disposed outside of said main seal assembly, said gas inlet tube being secured within said seal gland; the tertiary seal assembly includes: the third spring seat, the third spring, the lining ring pressing plate and the floating ring pressing cover; the floating ring gland is sleeved on the outer side of the first movable ring seat, an annular cavity is formed between the floating ring gland and the first movable ring seat, the third spring seat is arranged in the annular cavity and sleeved on the outer side of the first movable ring seat, and the lining ring pressing plate is fixed on an opening of the annular cavity and fixedly connected with the third spring; and an air flow channel of the air floating ring assembly is formed among the lining ring pressing plate, the static ring pressing plate and the sealing gland, and air of the air inlet pipe enters the air flow channel and enters a cavity near the outer side of the main sealing friction pair.
6. The mechanical seal of claim 1, wherein the front end of the hugging screw is provided with a drive ring.
7. The mechanical seal of claim 1, further comprising a stop plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285543.7A CN109163097B (en) | 2018-10-31 | 2018-10-31 | Mechanical sealing device of ultrafine particle ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811285543.7A CN109163097B (en) | 2018-10-31 | 2018-10-31 | Mechanical sealing device of ultrafine particle ball mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109163097A CN109163097A (en) | 2019-01-08 |
| CN109163097B true CN109163097B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811285543.7A Active CN109163097B (en) | 2018-10-31 | 2018-10-31 | Mechanical sealing device of ultrafine particle ball mill |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110748646A (en) * | 2019-10-24 | 2020-02-04 | 马鞍山楚锐科技信息咨询有限公司 | Adjustable sealing element |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4575306A (en) * | 1984-08-28 | 1986-03-11 | Kaiser Aluminum & Chemical Corporation | Slurry pump mechanical seal mounting assembly |
| JPH11304006A (en) * | 1998-04-15 | 1999-11-05 | Mitsubishi Heavy Ind Ltd | Dry gas sealing device |
| CN2804440Y (en) * | 2005-07-02 | 2006-08-09 | 自贡机械密封件有限责任公司 | Mechanical sealing gland without droping ring |
| CN201858359U (en) * | 2010-11-05 | 2011-06-08 | 天津市合润科技有限责任公司 | Anti-vibration mechanical seal provided with secondary protective device and used for large dredge boat |
| WO2017156933A1 (en) * | 2016-03-16 | 2017-09-21 | 邢宇 | High pressure resistant flushing system with multiple mechanical seals |
| 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 |
| CN209385655U (en) * | 2018-10-31 | 2019-09-13 | 东莞市华汇精密机械有限公司 | A kind of mechanically-sealing apparatus of ultrafine dust ball mill |
-
2018
- 2018-10-31 CN CN201811285543.7A patent/CN109163097B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4575306A (en) * | 1984-08-28 | 1986-03-11 | Kaiser Aluminum & Chemical Corporation | Slurry pump mechanical seal mounting assembly |
| JPH11304006A (en) * | 1998-04-15 | 1999-11-05 | Mitsubishi Heavy Ind Ltd | Dry gas sealing device |
| CN2804440Y (en) * | 2005-07-02 | 2006-08-09 | 自贡机械密封件有限责任公司 | Mechanical sealing gland without droping ring |
| CN201858359U (en) * | 2010-11-05 | 2011-06-08 | 天津市合润科技有限责任公司 | Anti-vibration mechanical seal provided with secondary protective device and used for large dredge boat |
| WO2017156933A1 (en) * | 2016-03-16 | 2017-09-21 | 邢宇 | High pressure resistant flushing system with multiple mechanical seals |
| 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 |
| CN209385655U (en) * | 2018-10-31 | 2019-09-13 | 东莞市华汇精密机械有限公司 | A kind of mechanically-sealing apparatus of ultrafine dust ball mill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109163097A (en) | 2019-01-08 |
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