CN111059289B - Multistage sealed cooling system suitable for high-speed slicer - Google Patents
Multistage sealed cooling system suitable for high-speed slicer Download PDFInfo
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- CN111059289B CN111059289B CN201911310560.6A CN201911310560A CN111059289B CN 111059289 B CN111059289 B CN 111059289B CN 201911310560 A CN201911310560 A CN 201911310560A CN 111059289 B CN111059289 B CN 111059289B
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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
- F16J15/3404—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member and characterised by parts or details relating to lubrication, cooling or venting of the seal
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
- F16C37/007—Cooling of bearings of rolling bearings
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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
- F16J15/3436—Pressing means
- F16J15/3452—Pressing means the pressing force resulting from the action of a spring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Abstract
The invention discloses a multistage sealing cooling system suitable for a high-speed slicing machine, which comprises a shaft sleeve, a shell, a bearing side sealing assembly, a motor side sealing assembly and an isolation check ring, wherein the shaft sleeve is arranged on the shell; the shaft sleeve is fixedly sleeved on a motor shaft of the high-speed slicing machine, and the shell is arranged on the outer side of the shaft sleeve, so that a cooling liquid flowing chamber is formed; the isolating check ring divides the cooling liquid flowing chamber into a bearing side cooling liquid chamber and a motor side cooling liquid chamber; an internal circulation cooling liquid flow channel for cooling the bearing is arranged in a motor shaft of the high-speed slicing machine; the bearing side cooling liquid cavity and the motor side cooling liquid cavity are respectively provided with a cooling liquid inlet, a liquid inlet channel, a cooling liquid outlet and a liquid outlet channel; the bearing side sealing assembly is used for preventing cooling liquid from leaking to the bearing; the motor side sealing assembly is used for preventing cooling liquid from leaking to the motor. The cooling circulation system enables the bearing to have long service life, and simultaneously meets the requirements of high rotating speed, high pressure and zero leakage of the high-speed slicing machine.
Description
Technical Field
The invention relates to a mechanical sealing structure, in particular to a multistage sealing cooling system suitable for a high-speed slicing machine.
Background
The rotating speed of a traditional slicing machine is generally about 4500r/min, a bearing in the slicing machine can meet the use requirement by cooling in a natural state, but the rotating speed of the traditional slicing machine is higher and higher along with the further improvement of the efficiency requirement of the slicing machine, and when the rotating speed of the traditional high-speed slicing machine reaches 10500r/min, if the bearing is still cooled by adopting a natural cooling mode, the service requirement cannot be met, the service life of the bearing is greatly reduced, and the performance of the slicing machine is reduced or even fails.
Disclosure of Invention
The invention discloses a multistage sealing cooling system suitable for a high-speed slicer, which aims to solve the problem that the natural cooling of a bearing of the high-speed slicer cannot meet the requirement during high-speed (10500r/min) operation.
The specific technical scheme of the invention is as follows:
the invention provides a multistage sealing cooling system suitable for a high-speed slicing machine, which is positioned between a motor body and a bearing of a motor shaft of the high-speed slicing machine and comprises a shaft sleeve, a shell, a bearing side sealing assembly, a motor side sealing assembly and an isolation check ring, wherein the bearing side sealing assembly is arranged on the shell;
the shaft sleeve is fixedly sleeved on a motor shaft of the high-speed slicing machine, and a plurality of sealing rings are arranged between the inner wall of the shaft sleeve and the outer wall of the motor shaft;
the shell is arranged outside the shaft sleeve, and a cooling liquid flowing chamber is formed between the shell and the shaft sleeve;
the isolation check ring is arranged on a radial annular bulge arranged on the inner wall of the shell, so that the cooling liquid flowing chamber is divided into two mutually isolated bearing side cooling liquid chambers and a motor side cooling liquid chamber;
an internal circulation cooling liquid flow channel for cooling the bearing is arranged in a motor shaft of the high-speed slicing machine;
a cooling liquid inlet is formed in the outer wall, corresponding to the shell, of the bearing side cooling liquid cavity, and a liquid inlet channel for communicating the inlet of the internal circulation cooling liquid channel with the bearing side cooling liquid cavity is formed in the shaft sleeve corresponding to the bearing side cooling liquid cavity;
a cooling liquid outlet is formed in the outer wall of the shell corresponding to the motor side cooling liquid cavity, and a liquid outlet channel communicated with the outlet of the internal circulation cooling liquid channel is formed in the shaft sleeve corresponding to the motor side cooling liquid cavity;
the bearing side sealing assembly is arranged at one side of the bearing side cooling liquid cavity and is used for preventing cooling liquid from leaking to the bearing;
the motor side sealing assembly is installed on one side of the motor side cooling liquid cavity and used for preventing cooling liquid from leaking to the motor.
Further, the motor side sealing assembly comprises a dynamic and static ring seal and a motor side static seal; the movable ring and the static ring are sealed and positioned in the cooling liquid cavity at the motor side, the static ring is arranged in the shell, and the movable ring is embedded in the shaft sleeve;
the motor side static seal comprises a screw and an annular sealing retainer ring, the annular sealing retainer ring is fixed on the end face of the shell close to one side of the motor through the screw, the annular sealing retainer ring is of an L-shaped lip structure, and the lip direction faces the inside of the shell.
Further, the bearing side sealing assembly comprises a dynamic and static ring seal and a bearing side centrifugal seal; the static ring is arranged in the housing, and the dynamic ring is embedded in the shaft sleeve;
the bearing side centrifugal seal comprises a screw and a sealing disc; the sealing disc is sleeved on the motor shaft and fixed on the end face, close to the bearing, of one side of the shaft sleeve through a screw, the sealing disc extends inwards in the axial direction of the motor shaft to form an axial annular bulge matched with a spigot of the shaft sleeve, a labyrinth sealing structure is formed between the outer wall of the sealing disc and the inner wall of the shell, an annular groove is further formed in the sealing disc, and the opening of the annular groove faces towards the inside of the shell.
Furthermore, a sealing ring is arranged at the position where the axial annular bulge is matched with the spigot of the shaft sleeve.
Furthermore, the static ring and the movable ring are respectively arranged on the shell and the shaft sleeve through anti-rotation pins.
Furthermore, a compression spring is arranged between the static ring and the shell.
Furthermore, the outer part of the annular sealing retainer ring is uniformly provided with at least three arc-shaped retaining pieces along the circumferential direction, and the arc-shaped retaining pieces are connected with the shell through screws.
Further, the shaft sleeve is coaxially arranged on the motor shaft through the shaft clamping device.
Further, the housing includes a bearing-side housing and a motor-side flange; the bearing side shell and the motor side flange are connected into a whole through screws, and a sealing ring is arranged between the bearing side shell and the motor side flange.
Further, the internal circulation cooling liquid channel comprises a first axial channel, a second axial channel and a radial channel; the radial flow channel is arranged along the radial direction of the motor shaft and is positioned on one side of the bearing to be cooled, which is far away from the motor; the first axial flow passage and the second axial flow passage are parallel to each other, one ends of the first axial flow passage and the second axial flow passage are communicated through the radial flow passages, and the other ends of the first axial flow passage and the second axial flow passage are sealed through screw plugs.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the cooling system is additionally arranged between the motor body of the high-speed slicer and the bearing of the motor shaft, so that the cooling of the bearing is realized, and meanwhile, the cooling liquid is sealed by the bearing side sealing assembly and the motor side sealing assembly, the leakage of the cooling liquid to the motor side and the bearing side is prevented, the bearing of the high-speed slicer has long service life, and the requirements of high rotating speed, high pressure and zero leakage of the high-speed slicer are met.
2. According to the invention, the end face sealing structures are arranged on the motor side and the bearing side, the dynamic and static ring friction pair is circularly cooled by using cooling liquid, the anti-rotation pins are arranged behind the dynamic and static rings, and the friction pair is matched with the graphite by adopting SiC, so that the impact and abrasion requirements under the working condition of positive and negative alternate high-speed operation are met, the friction power consumption of the sealing device is effectively reduced, and the service life of the sealing device is prolonged; meanwhile, the outer wall of a sealing disc with a bearing side for centrifugal sealing and the inner wall of the shell are sealed in a labyrinth manner, a spigot between the sealing disc and the shaft sleeve is matched and sealed through a sealing ring, so that the inner and outer sealing of the sealing disc is realized, meanwhile, the disc is provided with an annular groove, the sealing in the radial direction is realized through the centrifugal force generated by the rotation of the sealing disc, and the sealing reliability of the whole cooling system is greatly improved.
3. The shaft sleeve is arranged on a motor shaft by adopting the shaft holder, and the shell is detachably connected with the motor side flange plate by the bearing side shell through the screw, so that the whole cooling system and the internal parts are more convenient to disassemble and assemble, and the shaft sleeve is beneficial to system maintenance.
Drawings
Fig. 1 is a schematic diagram of the general structure of the present invention.
The reference numbers are as follows:
1-motor shaft, 2-bearing, 3-shaft sleeve, 4-shell, 5-bearing side sealing component, 6-motor side sealing component, 7-isolation retainer ring, 8-sealing ring, 9-shaft holding device, 10-cooling liquid flowing cavity, 11-bearing side shell, 12-motor side flange, 13-radial annular bulge, 14-bearing side cooling liquid cavity, 15-motor side cooling liquid cavity, 16-internal circulation cooling liquid flow channel, 17-first axial flow channel, 18-second axial flow channel, 19-radial flow channel, 20-screw plug, 21-liquid outlet, 22-liquid inlet, 23-cooling liquid inlet, 24-liquid inlet channel, 25-cooling liquid outlet, 26-liquid outlet channel, 27-dynamic and static ring sealing, 271-static ring, 272-dynamic ring, 273-anti-rotation pin, 274-compression spring, 28-bearing side centrifugal seal, 281-sealing disk, 282-axial annular bulge, 283-annular groove, 29-motor side static seal, 291-annular sealing retainer ring and 292-arc baffle plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present embodiment provides a multi-stage sealed cooling system suitable for high speed microtomes, as shown in FIG. 1
The system is arranged between a motor body (not shown in the figure) of a high-speed slicing machine and a bearing 2 of a motor shaft 1, and the specific structure is as follows: the sealing device comprises a shaft sleeve 3, a shell 4, a bearing side sealing assembly 5, a motor side sealing assembly 6 and an isolation check ring 7;
the shaft sleeve 3 is fixedly sleeved on a motor shaft 1 of the high-speed slicing machine, and a plurality of sealing rings 8 are arranged between the inner wall of the shaft sleeve 3 and the outer wall of the motor shaft 1; in the embodiment, in order to facilitate the disassembly, assembly and replacement of subsequent parts, the shaft sleeve 3 is arranged on the motor shaft 1 through the shaft holder 9;
the shell 4 is arranged outside the shaft sleeve 3 and does not contact with the shaft sleeve, so that a cooling liquid flowing chamber 10 is formed between the shell 4 and the shaft sleeve 3; in this embodiment, in order to facilitate the disassembly, assembly and replacement of subsequent parts, the housing 4 is composed of a bearing-side housing 11 and a motor-side flange 12; the bearing side housing 11 and the motor side flange 12 are integrally connected by screws, and a seal ring 8 is interposed therebetween to ensure a sealing effect.
The isolation check ring 7 is mounted on a radial annular protrusion 13 formed on the inner wall of the housing 4 (in this embodiment, the radial annular protrusion 13 is located on the inner wall of the motor-side flange 12), so as to divide the coolant flow chamber 10 into two mutually isolated bearing-side coolant chambers 14 and a motor-side coolant chamber 15;
an internal circulation cooling liquid flow channel 16 for cooling a bearing is arranged in a motor shaft 1 of the high-speed slicing machine; the specific structure of the internal circulation cooling liquid flow passage 16 comprises a first axial flow passage 17, a second axial flow passage 18 and a radial flow passage 19; the radial flow channel 19 is arranged along the radial direction of the motor shaft 1 and is positioned on one side of the bearing 2 to be cooled, which is far away from the motor; the first axial flow passage 17 and the second axial flow passage 18 are parallel to each other, one end of the first axial flow passage 17 and one end of the second axial flow passage 18 are communicated through a radial flow passage 19, the other end of the first axial flow passage 17 and the other end of the second axial flow passage 18 are sealed through a screw plug 20, a liquid outlet 21 is formed in the first axial flow passage 17, and a liquid inlet 22 is formed in the second axial flow passage 18;
a cooling liquid inlet 23 is formed in the outer wall, corresponding to the shell 4, of the bearing side cooling liquid cavity 14, and a liquid inlet channel 24 for communicating a liquid inlet 22 of the internal circulation cooling liquid channel with the bearing side cooling liquid cavity 14 is formed in the shaft sleeve 3 corresponding to the bearing side cooling liquid cavity 14;
a cooling liquid outlet 25 is formed in the outer wall of the shell 4 corresponding to the motor side cooling liquid cavity 15, and a liquid outlet channel 26 communicated with the liquid outlet 21 of the internal circulation cooling liquid channel is formed in the shaft sleeve 3 corresponding to the motor side cooling liquid cavity 15;
the bearing side seal assembly 5 is installed on the side of the bearing side cooling liquid chamber 14 for preventing the cooling liquid from leaking to the bearing; specifically, the bearing-side seal assembly 5 in the present embodiment includes a dynamic-static ring seal 27 and a bearing-side centrifugal seal 28;
the static ring seal 27 is positioned in the bearing side cooling liquid chamber 14, the static ring 271 is installed in the bearing side housing 11, the dynamic ring 272 is embedded in the shaft sleeve 3, the static ring 271 and the dynamic ring 272 are respectively installed on the bearing side housing 11 and the shaft sleeve 3 through the anti-rotation pins 273, and a compression spring 274 is also arranged between the static ring 271 and the bearing side housing 11 and used for always applying pressure to the static ring so as to enable the static ring and the dynamic ring to be tightly attached;
the bearing side centrifugal seal 28 comprises a screw and sealing disc 281; the sealing disc 281 is sleeved on the motor shaft 1 and fixed on one side end face of the shaft sleeve 4 close to the bearing through a screw, the sealing disc 281 extends inwards along the axial direction of the motor shaft 1 to form an axial annular protrusion 282 matched with a spigot of the shaft sleeve 4 (a sealing ring 8 is installed at a position matched with the spigot in the embodiment to prevent axial leakage between the shaft sleeve 4 and the sealing disc 281), a labyrinth sealing structure is formed between the outer wall of the sealing disc 281 and the inner wall of the bearing side shell 11 to prevent axial leakage between the bearing side shell 11 and the sealing disc 281, an annular groove 283 is further arranged on the sealing disc 281, the opening of the annular groove 283 faces the inside of the bearing side shell 11, and radial leakage between the sealing disc 281 and the bearing side shell 11 is avoided under the action of centrifugal force generated by the sealing disc 281 along with the rotation of the shaft sleeve 4.
The motor side sealing assembly 6 is installed on one side of the motor side cooling liquid cavity 15 and used for preventing cooling liquid from leaking to the motor, specifically, the motor side sealing assembly 6 in the embodiment comprises a moving and static ring seal 27 and a motor side static seal 29;
the static ring seal 27 is positioned in the motor side cooling liquid cavity 15, the static ring 271 is installed in the motor side flange 12, the dynamic ring 272 is embedded in the shaft sleeve 3, the static ring 271 and the dynamic ring 272 are respectively installed on the motor side flange 12 and the shaft sleeve 3 through anti-rotation pins 273, and a compression spring 274 is also arranged between the static ring 271 and the motor side flange 12 and used for applying pressure to the static ring all the time so as to enable the static ring and the dynamic ring to be tightly attached;
the motor side static seal 29 includes a screw and an annular seal retainer 291, and the annular seal retainer 291 is fixed to the end surface of the motor side flange 12 on the side close to the motor by the screw, and the annular seal retainer 291 has an L-shaped lip structure, and the lip direction faces the inside of the motor side flange 12. Specifically, due to convenient fixing and assembling, at least three arc-shaped baffle plates 292 are uniformly distributed on the outer portion of the annular sealing retainer ring 291 along the circumferential direction, and the arc-shaped baffle plates 292 are connected with the motor side flange 12 through screws.
From the above description of the structure of the sealed cooling system, the practical use of the system is now described as follows:
firstly, the system needs to meet the following technical indexes when in use:
pressure of the coolant: 1 MPa.
Cooling liquid: water + ethylene glycol.
Running speed of bearing: 10500r/min, and the rotation is positive and negative.
Service life of the bearing: and (4) 4000 h.
Individual run cycle times were 56 s:
4s during the forward starting stage;
the forward running stage is 20 s;
4s in the forward deceleration stage;
4s of reverse starting stage;
the reverse operation stage is 20 s;
and 4s in the reverse deceleration stage.
Then, the cooling liquid is introduced into the bearing side cooling liquid cavity 14 through the cooling liquid inlet 23, the cooling liquid entering the bearing side cooling liquid cavity 14 enters the first axial flow channel 17 through the liquid inlet channel 24, then flows through the radial flow channel 19 and the second axial flow channel 18, flows into the motor side cooling liquid cavity 15 from the liquid outlet channel 26, and is finally discharged from the cooling liquid outlet 25, so that the cooling of the bearing in the high-speed running process is realized;
in the process, the coolant initially entering the bearing side coolant chamber 14 is prevented from leaking to the bearing 2 under the synergistic effect of the two-stage sealing structures of the dynamic and static ring seals 27 and the bearing side centrifugal seals 28, and meanwhile, the coolant which has finished cooling in the motor side coolant chamber 15 is prevented from leaking to the motor under the synergistic effect of the two-stage sealing structures of the dynamic and static ring seals 27 and the motor side static seal 29.
The assembly and installation process of the present embodiment is as follows:
firstly, mounting an isolation retainer ring 7 on a radial annular bulge 13 of a motor side flange 12 through screws according to a structure shown in the figure;
secondly, a moving ring 271 and a stationary ring 272 in the two moving and stationary ring seals 27 are respectively arranged on the bearing side shell 11, the motor side flange 12 and the shaft sleeve 3; when the motor side flange 12 and the bearing side shell 11 are butted, after the sealing ring 8 is arranged at the matching position, the motor side flange 12 and the bearing side shell are connected by bolts, so that two dynamic and static ring seals are formed;
thirdly, mounting the sealing disc 281 on the shaft sleeve 3 through a screw;
fourthly, mounting the annular sealing retainer ring 291 on the motor-side flange 12 by screws;
fifthly, mounting the arc-shaped baffle 292 on the motor side flange plate 12 through screws;
sixthly, mounting the shaft sleeve 3 and the assembly part on the motor shaft 1, aligning the liquid inlet channel 24 with the liquid inlet 22 of the internal circulation cooling liquid flow channel, and aligning the liquid outlet channel 26 with the liquid outlet 21 of the internal circulation cooling liquid flow channel;
and seventhly, mounting the shaft embracing device 9 on the shaft sleeve 3 to form the system.
The product is subjected to forward and reverse alternating operation test examination in sequence, and the test shows that all sealing indexes meet the requirements of a high-speed and high-speed slicing machine device.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a multistage sealed cooling system suitable for high-speed slicer which characterized in that: the sealing device comprises a shaft sleeve (3), a shell (4), a bearing side sealing assembly (5), a motor side sealing assembly (6) and an isolation retainer ring (7);
the shaft sleeve (3) is fixedly sleeved on a motor shaft (1) of the high-speed slicing machine, and a plurality of sealing rings (8) are arranged between the inner wall of the shaft sleeve (3) and the outer wall of the motor shaft (1);
the shell (4) is arranged on the outer side of the shaft sleeve (3), and a cooling liquid flowing chamber (10) is formed between the shell (4) and the shaft sleeve (3);
the isolation retainer ring (7) is arranged on a radial annular bulge (13) formed on the inner wall of the shell (4), so that the cooling liquid flowing chamber (10) is divided into two mutually isolated bearing side cooling liquid chambers (14) and a motor side cooling liquid chamber (15);
an internal circulation cooling liquid flow channel (16) for cooling a bearing is formed in a motor shaft (1) of the high-speed slicing machine;
a cooling liquid inlet (23) is formed in the outer wall, corresponding to the shell (4), of the bearing side cooling liquid cavity (14), and a liquid inlet channel (24) for communicating the inlet of the internal circulation cooling liquid flow passage (16) with the bearing side cooling liquid cavity (14) is formed in the shaft sleeve (3) corresponding to the bearing side cooling liquid cavity (14);
a cooling liquid outlet (25) is formed in the outer wall of the motor side cooling liquid cavity (15) corresponding to the shell (4), and a liquid outlet channel (26) communicated with an outlet of the internal circulation cooling liquid flow channel (16) is formed in the shaft sleeve (3) corresponding to the motor side cooling liquid cavity (15);
the bearing side sealing assembly (5) is arranged at one side of the bearing side cooling liquid chamber (14) and is used for preventing cooling liquid from leaking to the bearing;
the bearing side sealing assembly (5) comprises a dynamic and static ring seal (27) and a bearing side centrifugal seal (28); the dynamic and static ring seal (27) is positioned in the bearing side cooling liquid chamber (14), the static ring (271) is arranged in the shell (4), and the dynamic ring (272) is embedded in the shaft sleeve (3);
the bearing side centrifugal seal (28) comprises a screw and a sealing disc (281); the sealing disc (281) is sleeved on the motor shaft (1) and fixed on one side end face, close to the bearing (2), of the shaft sleeve (3) through screws, the sealing disc (281) extends inwards along the axial direction of the motor shaft (1) to form an axial annular bulge (282) matched with a spigot of the shaft sleeve, a labyrinth sealing structure is formed between the outer wall of the sealing disc (281) and the inner wall of the shell, an annular groove (283) is further arranged on the sealing disc (281), and an opening of the annular groove (283) faces the inside of the shell (4);
the motor side sealing assembly (6) is arranged on one side of the motor side cooling liquid cavity (15) and is used for preventing cooling liquid from leaking to the motor;
the motor side sealing assembly (6) comprises a dynamic and static ring seal (27) and a motor side static seal (29); the dynamic and static ring seal (27) is positioned in the motor side cooling liquid cavity (15), the static ring (271) is installed in the shell (4), and the dynamic ring (272) is embedded in the shaft sleeve (3);
the motor side static seal (29) comprises a screw and an annular sealing retainer ring (291), the annular sealing retainer ring (291) is fixed on the end face of the shell (4) close to one side of the motor by the screw, the annular sealing retainer ring (291) is of an L-shaped lip structure, and the lip direction faces the inside of the shell;
the static ring (271) and the rotating ring (272) are respectively arranged on the shell (4) and the shaft sleeve (3) through anti-rotating pins (273).
2. The multi-stage sealed cooling system for a high speed microtome according to claim 1, further comprising: and a sealing ring (8) is arranged at the position where the axial annular bulge (282) is matched with the spigot of the shaft sleeve (3).
3. The multi-stage sealed cooling system for a high speed microtome according to claim 2, further comprising: and a compression spring (274) is arranged between the static ring (271) and the shell (4).
4. The multi-stage sealed cooling system for a high speed microtome according to claim 3, further comprising: the outer portion of the annular sealing retainer ring (291) is evenly distributed with at least three arc-shaped retaining pieces (292) along the circumferential direction, and the arc-shaped retaining pieces (292) are connected with the shell (4) through screws.
5. The multi-stage sealed cooling system for a high speed microtome according to claim 1, further comprising: the shaft sleeve (3) is coaxially arranged on the motor shaft (1) through a shaft holding device (9).
6. The multi-stage sealed cooling system for a high speed microtome according to claim 1, further comprising: the shell (4) comprises a bearing side shell (11) and a motor side flange plate (12); the bearing side shell (11) and the motor side flange plate (12) are connected into a whole through screws, and a sealing ring is arranged between the bearing side shell and the motor side flange plate.
7. The multi-stage sealed cooling system for a high speed microtome according to claim 1, further comprising: the internal circulation cooling liquid flow channel (16) comprises a first axial flow channel (17), a second axial flow channel (18) and a radial flow channel (19); the radial flow channel (19) is arranged along the radial direction of the motor shaft 1 and is positioned at one side of the bearing to be cooled, which is far away from the motor; the first axial flow passage (17) and the second axial flow passage (18) are parallel to each other, one ends of the first axial flow passage and the second axial flow passage are communicated through a radial flow passage (19), and the other ends of the first axial flow passage and the second axial flow passage are sealed through a screw plug (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911310560.6A CN111059289B (en) | 2019-12-18 | 2019-12-18 | Multistage sealed cooling system suitable for high-speed slicer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911310560.6A CN111059289B (en) | 2019-12-18 | 2019-12-18 | Multistage sealed cooling system suitable for high-speed slicer |
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| CN111059289A CN111059289A (en) | 2020-04-24 |
| CN111059289B true CN111059289B (en) | 2022-04-12 |
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| CN112324591B (en) * | 2020-09-27 | 2022-01-04 | 蓝箭航天技术有限公司 | Low-temperature high-rotating-speed floating ring sealing test device for rocket engine |
| CN113446255A (en) * | 2021-08-06 | 2021-09-28 | 宜兴市宙斯泵业有限公司 | Mechanical seal for centrifugal pump capable of realizing self-circulation of cooling water |
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| US3843140A (en) * | 1971-11-24 | 1974-10-22 | Feodor Burgmann Fa | Cooled mechanical seal |
| CH572174A5 (en) * | 1972-06-09 | 1976-01-30 | Burgmann Dichtungswerk Feodor | |
| DE2238655C3 (en) * | 1972-08-05 | 1974-12-19 | Klein, Schanzlin & Becker Ag, 6710 Frankenthal | Mechanical seal for centrifugal pumps conveying hot liquids |
| CN201297390Y (en) * | 2008-11-11 | 2009-08-26 | 中芯国际集成电路制造(上海)有限公司 | Magneto-fluid cooling structure and corresponding magneto-fluid sealing device |
| CN204114151U (en) * | 2014-09-25 | 2015-01-21 | 天津西澳维密封技术发展有限公司 | Mechanical seal circulating cooling structure |
| CN104265907A (en) * | 2014-10-15 | 2015-01-07 | 邢宇 | Convection cooling of double mechanical sealing medium side friction pair |
| JP2019173889A (en) * | 2018-03-29 | 2019-10-10 | 三菱重工業株式会社 | Multistage shaft seal device and rotary machine |
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2019
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