CN112090317A - Bottom-in type stirrer for online replacement of mechanical seal and online replacement method thereof - Google Patents
Bottom-in type stirrer for online replacement of mechanical seal and online replacement method thereof Download PDFInfo
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- CN112090317A CN112090317A CN202011055092.5A CN202011055092A CN112090317A CN 112090317 A CN112090317 A CN 112090317A CN 202011055092 A CN202011055092 A CN 202011055092A CN 112090317 A CN112090317 A CN 112090317A
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- sealing
- mechanical seal
- mounting seat
- bearing seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/808—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0073—Sealings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F2035/35—Use of other general mechanical engineering elements in mixing devices
- B01F2035/351—Sealings
- B01F2035/3513—Sealings comprising a stationary member in frontal contact with a movable member
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Mechanical Sealing (AREA)
Abstract
The invention relates to a bottom-in mixer for replacing mechanical seal on line and an online replacement method thereof, wherein the bottom-in mixer for replacing the mechanical seal on line comprises the following components: the device comprises a bracket, a speed reducer, a coupler, a protective cover, a motor, a flange, a rack, a stirring shaft, a blade, a hub, a bearing seat assembly, a double-end-face mechanical seal, a liquid sealing system, a flushing water system, a rigid coupler and an auxiliary sealing system; the auxiliary sealing system comprises a mechanical seal mounting seat, a sealing ring, a sealing part and an isolating ring; the machine seal mounting seat is fixedly connected with the rack; the mechanical seal mounting seat is provided with a boss, a sealing ring is arranged on the boss, and the sealing part is provided with a groove with a downward concave surface. And an isolating ring is hermetically arranged below the boss, and the sealing part and the mechanical seal mounting seat provided with the isolating ring can be closed together and sealed. The invention can realize the flushing, cooling and lubricating of the double-end mechanical seal. The mechanical seal can be replaced on line without emptying the material.
Description
Technical Field
The invention relates to the technical field of bottom-in mixers, in particular to a bottom-in mixer capable of replacing mechanical seal on line and an online replacement method thereof.
Background
The mechanical seal of the existing bottom-in type stirrer is troublesome to disassemble, slurry in the kettle needs to be emptied when the mechanical seal of the stirrer is replaced, and the mechanical seal can be replaced after a motor, a speed reducer, a rack, a transmission shaft or a stirring shaft and other parts are disassembled, so that the mechanical seal is very inconvenient.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a bottom-in type stirrer capable of replacing a mechanical seal on line and an on-line replacement method thereof, wherein the mechanical seal can be replaced without emptying materials, and the operation is convenient.
In order to achieve the purpose, the invention provides the following technical scheme:
a bottom-entry mixer for on-line replacement of mechanical seals, comprising: the device comprises a bracket, a speed reducer, a coupling, a protective cover, a motor, a flange, a rack, a stirring shaft, a blade, a hub, a bearing seat assembly, a double-end-face mechanical seal, a liquid sealing system and a flushing water system, wherein a shaft head of the motor is fixedly connected with a shaft head of the speed reducer through the coupling;
the speed reducer is fixedly connected with the flange and the frame; an output shaft head of the speed reducer is fixedly connected with a shaft head of the stirring shaft through a rigid coupling; the stirring shaft is fixedly provided with a bearing seat assembly, a double-end-face mechanical seal and a sealing component; the stirring shaft is provided with a first shaft shoulder and a second shaft shoulder, the first shaft shoulder is positioned above the rigid coupling and is larger than the inner diameter of the rigid coupling, and the second shaft shoulder is positioned above the bearing seat assembly and is larger than the inner diameter of the bearing seat assembly; the sealing component is hermetically arranged on the stirring shaft; the bearing seat assembly is fixedly arranged on the rack; the double-end-face mechanical seal is connected with the mechanical seal mounting seat in a sealing manner and is fixedly connected with the stirring shaft through a locking ring; the auxiliary sealing system comprises a mechanical seal mounting seat, a sealing ring, a sealing part and an isolating ring;
the machine seal mounting seat is fixedly connected with the rack; the machine seals the mount pad and is equipped with the boss, be equipped with the sealing washer on the boss, seal part is equipped with the recess, and the concave surface is downward, seal installation has the isolating ring under the boss, seal part and the machine that installs the isolating ring seal the mount pad can be closed together, the isolating ring just seals with seal part's lateral wall laminating.
Further, the sealing ring is positioned at the top or the outer side of the boss.
Furthermore, the isolation ring comprises a pressing ring, a first sealing ring, a spring, a small sealing ring and a second sealing ring, wherein the pressing ring is fixedly connected with the first sealing ring through a bolt, and the second sealing ring limits the horizontal position and rotation of the second sealing ring through a pin and is movably connected with the pressing ring through the spring; the isolating ring is connected with the mechanical seal mounting seat through a pressing ring and a bolt, and the isolating ring is attached to the mechanical seal mounting seat through a small sealing ring; the second sealing ring is attached to the sealing part; the second sealing ring is made of non-metal sealing materials.
Further, the double-end-face mechanical seal comprises a shaft sleeve, a shell, a bearing, a framework oil seal, a fixed movable ring, a first movable ring, a second movable ring, a first static ring and a second static ring, wherein the shell comprises a gland, a bearing seat, a connecting flange and a shell,
the shaft sleeve is connected with the stirring shaft in a sealing manner, the fixed movable ring is connected with the shaft sleeve in a sealing manner, the gland is fixedly connected with the shaft sleeve, a framework oil seal is arranged between the gland and the shaft sleeve, the gland, the bearing block and the connecting flange are fixedly arranged on the mechanical seal mounting seat, the bearing is fixedly arranged on the shaft sleeve by the gland and the bearing block, and the framework oil seal is arranged between the connecting flange and the shaft sleeve; the shell is hermetically connected with the connecting flange; collecting grooves are formed in the shell and the flange, a second static ring is installed in the collecting grooves in the connecting flange in a sealing mode, a second movable ring is installed on the shaft sleeve in a sealing mode, a first movable ring is installed on a fixed movable ring in a sealing mode, the first static ring is installed in the collecting grooves in the shell through springs and is connected with the outer side wall of the collecting grooves in a sealing mode, the first movable ring is attached to the first static ring, and the second movable ring is attached to the second static ring;
the shell is provided with a sealing liquid inlet channel and a sealing liquid outlet channel, the shell, the first stationary ring, the first movable ring, the framework oil seal and the shaft sleeve are combined to form a closed space C, and the sealing liquid inlet channel and the sealing liquid outlet channel are respectively connected with the closed space C;
further, the shaft sleeve is connected with the stirring shaft in a sealing mode through a locking ring and a sealing ring, the fixed movable ring is connected with the shaft sleeve in a sealing mode through a bolt and the sealing ring, the gland is fixedly connected with the shaft sleeve through a gasket and the bolt, and the gland, the bearing block and the connecting flange are fixedly installed on the mechanical seal installation seat through the bolt; the shell is fixedly connected with the connecting flange through bolts, and a sealing ring is arranged on the contact surface of the shell and the connecting flange; the second stationary ring is fixedly arranged in a collecting tank on the connecting flange, and a sealing ring is arranged on a contact surface; the second movable ring is fixedly arranged on the shaft sleeve, a sealing ring is arranged on a contact surface, the first movable ring is fixedly arranged on the fixed movable ring, and the sealing ring is arranged on the contact surface; the first stationary ring is arranged in a collecting tank on the shell through a spring, and a sealing ring is arranged between the first stationary ring and the outer side wall of the collecting tank;
the sealing liquid inlet channel is communicated with a collecting tank on the shell, and the sealing liquid outlet channel is connected to the collecting tank of the connecting flange;
further, the flushing water system comprises a water tank, a water pump and a flushing water channel, the flushing water channel comprises a first flushing water channel, a second flushing water channel and a space A, the shell with the double end faces mechanically sealed is provided with the first flushing water channel, the machine seal mounting seat is provided with the second flushing water channel, and the first flushing water channel is communicated with the second flushing water channel in a sealing mode; a space A is formed between the double-end-face mechanical seal and the mechanical seal mounting seat, the stirring shaft, the mechanical seal mounting seat, the sealing part and the isolation ring are separated to form a space B, the second flushing water channel is communicated with the space A, and the pressure of the flushing water system is greater than that of the space B.
Further, the speed reducer is fixedly connected with the flange and the rack through bolts; the frame is provided with a bearing seat fixing plate, and the bearing seat assembly is fixedly connected with the bearing seat transition plate and the bearing seat fixing plate through bolts.
Further, the locking ring comprises an inner ring and an outer ring, the inner ring is disconnected, the upper portion and the lower portion of the outer wall of the inner ring are respectively provided with an inclined surface, the outer ring is provided with an inner wall matched with the inclined surfaces, and the two outer rings are locked through bolts.
Furthermore, the upper half coupling part of the rigid coupling is of a half-half detachable structure, and the two half parts are connected through bolts.
In addition, an online replacement method is also provided, which comprises the following steps:
when the double-end-face mechanical seal needs to be replaced, the liquid sealing system and the water flushing system are closed firstly, the second sealing ring of the isolating ring is closed with the sealing part at the moment, the speed reducer, the connecting disc and the rack are disassembled, the upper portion and the lower portion of the rigid coupling are disassembled, the bearing seat assembly, the transition plate of the bearing seat and the bearing seat fixing plate are disassembled, the mounting bolts of the double-end-face mechanical seal and the mechanical seal mounting seat are disassembled, the double-end-face mechanical seal, the bearing seat assembly and the stirring shaft are integrally moved down together with the sealing part until the sealing part and the mechanical seal mounting seat are closed, the sealing rings are respectively attached to the sealing part and the mechanical seal mounting seat at the moment, finally the locking ring is loosened, and the.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a structure, wherein the mounting position of a sealing component is higher than that of a machine seal mounting seat, the sealing component is matched with the machine seal mounting seat in shape, and a sealing ring is arranged between the sealing component and the machine seal mounting seat. The lower half part is provided with an isolating ring which has sealing performance with the sealing part and the mechanical seal mounting seat; when the mechanical seal needs to be replaced, the rigid coupling is disassembled, the mounting bolts of the mechanical seal and the mechanical seal mounting seat and the mounting bolts of the bearing assembly and the frame are loosened, the mechanical seal, the bearing assembly and the stirring shaft move down together with the sealing part, the sealing part and the mechanical seal mounting seat are closed at the moment to form an auxiliary sealing effect, and the mechanical seal can be pulled out for replacement at the moment.
Still provide a structure, wash the system through setting up the bath, realize washing the outside of first rotating ring, first quiet ring to take away impurity, rushing out the encapsulated situation of isolating ring, flow direction space B (in the reation kettle), thereby realized washing mechanical seal's outside.
Still provide a structure, through setting up the liquid sealing system, realize sealed, clean, cooling, the lubrication to double mechanical seal inside (space C).
Drawings
FIG. 1 is a schematic view of a blender with an inline replacement mechanical seal.
Fig. 2 is a schematic structural view of a double mechanical seal.
Fig. 3 is a schematic structural view of a sealing member and a mechanical seal mounting seat.
Fig. 4 is a schematic view of the spacer ring structure.
Fig. 5 is a schematic view of a rack structure.
Figure 6 shows a schematic view of a locking ring structure.
Description of reference numerals: 1 bracket, 2 speed reducer, 4 shaft coupling, 3 protective cover, 5 motor, 6 flange, 7 rigid shaft coupling, 8 frame, 9 first shaft shoulder, 10 bearing seat assembly, 11 bearing seat transition plate, 12 bearing seat fixing plate, 13 second shaft shoulder, 14 isolating ring, 14-1 press ring, 14-2 first seal ring, 14-3 seal ring, 14-4 second seal ring, 15 double end face mechanical seal, 15-1 shell, 15-2 skeleton oil seal, 15-3 gland, 15-4 bearing, 15-5 bearing seat, 15-6 connecting flange, 15-7 shell, 15-8 fixed movable ring, 15-9 first movable ring, 15-10 first stationary ring, 15-11 second movable ring, 15-12 second stationary ring, 15-13 sealing liquid inlet channel, 15-14 first flushing water channel, 15-15 shaft sleeves, 15-16 sealing liquid outlet channels, 15-17 collecting tanks, 16 mechanical seal mounting seats, 16-1 bosses, 16-2 second flushing water channels, 17 sealing rings, 18 sealing parts, 18-1 grooves, 19 stirring shafts, 20 blades, 21 hubs, 22 locking rings, 22-1 inner rings and 22-2 outer rings.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The invention provides the following technical scheme:
as shown in fig. 1, a bottom-in mixer for on-line replacement of mechanical seal comprises: the automatic cleaning device comprises a bracket 1, a speed reducer 2, a coupler 4, a protective cover 3, a motor 5, a flange 6, a frame 8, a stirring shaft 19, a blade 20, a hub 21, a bearing seat assembly 10, a double-end-face mechanical seal 15, a liquid sealing system and a flushing water system, wherein a shaft head of the motor 5 is fixedly connected with a shaft head of the speed reducer 2 through the coupler 4, and the automatic cleaning device also comprises a rigid coupler 7 and an auxiliary sealing system;
the speed reducer 2 is fixedly connected with the flange 6 and the frame 8; the output shaft head of the speed reducer 2 is fixedly connected with the shaft head of the stirring shaft 19 through a rigid coupling 7; the stirring shaft 19 is fixedly provided with a bearing seat assembly 10, a double-end-face mechanical seal 15 and a sealing component 18; the stirring shaft is provided with a first shaft shoulder 9 and a second shaft shoulder 13, the first shaft shoulder 9 is positioned above the rigid coupling 7 and is larger than the inner diameter of the rigid coupling 7, and the second shaft shoulder 13 is positioned above the bearing seat assembly 10 and is larger than the inner diameter of the bearing seat assembly 10; the sealing component 18 is hermetically arranged on the stirring shaft 19; the bearing seat assembly 10 is fixedly arranged on the frame 8; the double-end-face mechanical seal 15 is hermetically connected with the mechanical seal mounting base 16 and is fixedly connected with the stirring shaft 19 through a locking ring 22;
the auxiliary sealing system comprises a mechanical seal mounting seat 16, a sealing ring 17, a sealing part 18 and a spacer ring 14;
the machine seal mounting seat 16 is fixedly connected with the frame 8; the mechanical seal mounting seat 16 is provided with a boss 16-1, a sealing ring 17 is arranged on the boss 16-1, the sealing part 18 is provided with a groove 18-1, the concave surface of the sealing part is downward, an isolating ring 14 is hermetically mounted below the boss 16-1, the sealing part 18 and the mechanical seal mounting seat 16 provided with the isolating ring 14 can be closed together, and the isolating ring 14 is attached to and sealed with the side wall of the sealing part 18.
The sealing ring 17 is located on the top or outside of the boss 16-1.
According to the figures 3 and 4, the isolating ring 14 comprises a pressing ring 14-1, a first sealing ring 14-2, a spring, a small sealing ring 14-3 and a second sealing ring 14-4, wherein the pressing ring 14-1 is fixedly connected with the first sealing ring 14-2 through a bolt, the horizontal position and the rotation of the second sealing ring 14-4 are limited through a pin, and the second sealing ring is movably connected with the pressing ring 14-1 through the spring; the isolating ring 14 is in bolted connection with the mechanical seal mounting seat 16 through a pressure ring 14-1, and the isolating ring 14 is attached to the mechanical seal mounting seat 16 through a small sealing ring 14-3; the second sealing ring 14-4 is attached to the sealing part 18;
the second sealing ring 14-4 is made of non-metal sealing material.
According to the figures 2 and 3, the double-end-face mechanical seal 15 comprises a shaft sleeve 15-15, a shell 15-1, a bearing 15-4, a framework oil seal 15-2, a fixed movable ring 15-8, a first movable ring 15-9, a second movable ring 15-11, a first stationary ring 15-10 and a second stationary ring 15-12, wherein the shell 15-1 comprises a gland 15-3, a bearing seat 15-5, a connecting flange 15-6 and a shell 15-7,
the shaft sleeve 15-15 is connected with the stirring shaft 19 in a sealing mode through a locking ring 22 and a sealing ring, the fixed movable ring 15-8 is connected with the shaft sleeve 15-15 in a sealing mode through a bolt and the sealing ring, the gland 15-3 is fixedly connected with the shaft sleeve 15-15 through a gasket and the bolt, a framework oil seal 15-2 is installed between the gland 15-3 and the shaft sleeve 15-15, and the gland 15-3, the bearing seat 15-5 and the connecting flange 15-6 are fixedly installed on the machine seal installation seat 16 through the bolt; the bearing 15-4 is fixedly arranged on the shaft sleeve 15-15 by the gland 15-3 and the bearing seat 15-5, and a framework oil seal 15-2 is arranged between the connecting flange 15-6 and the shaft sleeve 15-15; the shell 15-7 is fixedly connected with the connecting flange 15-6 through bolts, and a sealing ring is arranged on the contact surface of the shell; collecting grooves 15-17 are formed in the shell 15-7 and the flange 15-6, the second stationary ring 15-12 is fixedly installed in the collecting grooves 15-17 in the connecting flange 15-6, and a sealing ring is arranged on a contact surface; the second movable ring 15-11 is fixedly arranged on the shaft sleeve 15-15, a sealing ring is arranged on the contact surface, the first movable ring 15-9 is fixedly arranged on the fixed movable ring 15-8, and the sealing ring is arranged on the contact surface; the first stationary ring 15-10 is arranged in a collecting tank 15-17 on the shell 15-7 through a spring, and a sealing ring is arranged between the first stationary ring and the outer side wall of the collecting tank 15-17;
the first movable ring 15-9 is attached to the first stationary ring 15-10, and the second movable ring 15-11 is attached to the second stationary ring 15-12;
the shell 15-1 is provided with a sealing liquid inlet channel 15-13 and a sealing liquid outlet channel 15-16, the shell 15-1, a first stationary ring 15-10, a first movable ring 15-9, a framework oil seal 15-2 and a shaft sleeve 15-15 are combined to form a closed space C, and the sealing liquid inlet channel 15-13 and the sealing liquid outlet channel 15-16 are respectively connected with the closed space C;
the sealing liquid inlet channel 15-13 leads to a collecting tank 15-17 on the shell 15-7, and the sealing liquid outlet channel 15-16 is connected to the collecting tank 15-17 of the connecting flange 15-6;
according to fig. 2, 3, the flushing water system comprises a water tank, a water pump, a flushing water channel comprising a first flushing water channel 15-14, a second flushing water channel 16-2, a space a,
a shell 15-1 of the double-end-face mechanical seal 15 is provided with a first flushing water channel 15-14, the mechanical seal mounting seat 16 is provided with a second flushing water channel 16-2, and the first flushing water channel 15-14 is communicated with the second flushing water channel 16-2 in a sealing manner; a space A is formed between the double mechanical seal 15 and the mechanical seal mounting seat 16, the stirring shaft 19, the mechanical seal mounting seat 16, the sealing part 18 and the isolating ring 14 are isolated to form a space B, the second flushing water channel 16-2 leads to the space A, and the pressure of the flushing water system is greater than that of the space B.
According to the figure 1, the speed reducer 2 is fixedly connected with the flange 6 and the frame 8 through bolts;
the frame 8 is provided with a bearing seat fixing plate 12, and the bearing seat assembly 10 is fixedly connected with a bearing seat transition plate 11 and the bearing seat fixing plate 12 through bolts.
According to fig. 6, the locking ring 22 comprises an inner ring 22-1 and an outer ring 22-2, the inner ring 22-1 is broken, the upper and lower surfaces of the outer wall of the inner ring 22-1 are respectively provided with an inclined surface, the outer ring 22-2 is provided with an inner wall matched with the inclined surface, and the two outer rings 22-2 are locked up and down through bolts.
The rigid coupling 7 according to fig. 1 has a split-half structure of the upper coupling part and the two halves connected by bolts.
The working principle is that the sealing part 18 and the mechanical seal mounting seat 16 can be closed or opened, when the stirring machine works, the sealing part 18 and the mechanical seal mounting seat 16 are opened, the sealing part 18 is attached and sealed with the isolating ring 14, when the flushing system is needed to flush the first movable ring 15-9 and the first static ring 15-10, the flushing system is opened, water flows to the space A through the first flushing water channel and the second flushing water channel, the first movable ring 15-9 and the first static ring 15-10 are flushed, dirt is taken away, and because the water pressure of the flushing water is greater than the pressure of the reaction kettle (space B), the second sealing ring 14-4 in the original sealing state is flushed, and the flushing water flows to the reaction kettle, namely, the space B.
When the double-end-face mechanical seal 15 needs to be replaced, the rigid coupling 7 is disassembled, the mounting bolts of the double-end-face mechanical seal 15 and the mechanical seal mounting seat 16 and the mounting bolts of the bearing assembly 10 and the frame 8 are loosened, the double-end-face mechanical seal 15, the bearing assembly 10 and the stirring shaft 19 move downwards together with the sealing part 18, at the moment, the sealing part 18 and the mechanical seal mounting seat 16 are closed, and an auxiliary sealing structure is formed due to the action of the sealing ring and the action of the isolating ring 14. At this point, locking ring 22 may be loosened and double mechanical seal 15 may be pulled out for replacement. All parts are removed without emptying the material.
The liquid sealing system of the double-end-face mechanical seal 15 is used for strengthening the sealing function between the second movable ring 15-11 and the second static ring 15-12 and removing impurities, cooling and lubricating. The sealing liquid enters the space C (an inner cavity of double-end mechanical seal) through the sealing liquid inlet channel 15-13, passes through the first movable ring 15-9 and the first static ring 15-10, passes through the second movable ring 15-11 and the second static ring 15-12, flows out of the sealing liquid outlet channel 15-16, and is recycled.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A bottom-entry mixer for on-line replacement of mechanical seals, comprising: the device comprises a bracket (1), a speed reducer (2), a coupler (4), a protective cover (3), a motor (5), a flange (6), a rack (8), a stirring shaft (19), blades (20), a hub (21), a bearing seat assembly (10), a double-end-face mechanical seal (15), a liquid sealing system and a flushing water system, wherein a shaft head of the motor (5) is fixedly connected with a shaft head of the speed reducer (2) through the coupler (4), and the device is characterized by further comprising a rigid coupler (7) and an auxiliary sealing system;
the speed reducer (2) is fixedly connected with the flange (6) and the frame (8); an output shaft head of the speed reducer (2) is fixedly connected with a shaft head of the stirring shaft (19) through a rigid coupling (7); the stirring shaft (19) is fixedly provided with a bearing seat assembly (10), a double-end-face mechanical seal (15) and a sealing component (18); the stirring shaft is provided with a first shaft shoulder (9) and a second shaft shoulder (13), the first shaft shoulder (9) is positioned above the rigid coupling (7) and is larger than the inner diameter of the rigid coupling (7), and the second shaft shoulder (13) is positioned above the bearing seat assembly (10) and is larger than the inner diameter of the bearing seat assembly (10); the sealing component (18) is hermetically arranged on the stirring shaft (19); the bearing seat assembly (10) is fixedly arranged on the rack (8); the double-end-face mechanical seal (15) is connected with the mechanical seal mounting seat (16) in a sealing manner and is fixedly connected with the stirring shaft (19) through a locking ring (22);
the auxiliary sealing system comprises a mechanical seal mounting seat (16), a sealing ring (17), a sealing part (18) and a spacer ring (14);
the machine seal mounting seat (16) is fixedly connected with the rack (8); the mechanical seal mounting seat (16) is provided with a boss (16-1), a sealing ring (17) is arranged on the boss (16-1), a groove (18-1) is formed in the sealing part (18), the concave surface of the sealing part faces downwards, an isolating ring (14) is arranged under the boss (16-1) in a sealing mode, the sealing part (18) and the mechanical seal mounting seat (16) provided with the isolating ring (14) can be closed together, and the isolating ring (14) is attached to and sealed with the side wall of the sealing part (18).
2. A blender with in-line replacement of mechanical seals as claimed in claim 1, characterised in that the sealing ring (17) is located on top of or outside the boss (16-1).
3. The bottom-in mixer for replacing mechanical seal on line according to claim 1 is characterized in that the isolation ring (14) comprises a press ring (14-1), a first seal ring (14-2), a spring, a small seal ring (14-3) and a second seal ring (14-4), wherein the press ring (14-1) is fixedly connected with the first seal ring (14-2) through a bolt, the second seal ring (14-4) is limited in horizontal position and rotation through a pin, and is movably connected with the press ring (14-1) through the spring; the isolating ring (14) is in bolted connection with the machine seal mounting seat (16) through a pressing ring (14-1), and the isolating ring (14) is attached to the machine seal mounting seat (16) through a small sealing ring (14-3); the second sealing ring (14-4) is attached to the sealing part (18);
the second sealing ring (14-4) is made of non-metal sealing material.
4. The bottom-in mixer for on-line replacement of mechanical seal according to claim 1, wherein the double-end mechanical seal (15) comprises a shaft sleeve (15-15), a housing (15-1), a bearing (15-4), a framework oil seal (15-2), a fixed movable ring (15-8), a first movable ring (15-9), a second movable ring (15-11), a first stationary ring (15-10) and a second stationary ring (15-12), the housing (15-1) comprises a gland (15-3), a bearing seat (15-5), a connecting flange (15-6) and a housing (15-7),
the shaft sleeve (15-15) is connected with the stirring shaft (19) in a sealing manner, the fixed movable ring (15-8) is connected with the shaft sleeve (15-15) in a sealing manner, the gland (15-3) is fixedly connected with the shaft sleeve (15-15), a framework oil seal (15-2) is arranged between the gland (15-3) and the shaft sleeve (15-15), the gland (15-3), the bearing seat (15-5) and the connecting flange (15-6) are fixedly arranged on the mechanical seal mounting seat (16), the bearing (15-4) is fixedly arranged on the shaft sleeve (15-15) by the gland (15-3) and the bearing seat (15-5), and the framework oil seal (15-2) is arranged between the connecting flange (15-6) and the shaft sleeve (15-15); the shell (15-7) is hermetically connected with the connecting flange (15-6); collecting grooves (15-17) are formed in the shell (15-7) and the flange (15-6), the second static ring (15-12) is installed in the collecting grooves (15-17) on the connecting flange (15-6) in a sealing mode, the second movable ring (15-11) is installed on the shaft sleeve (15-15) in a sealing mode, the first movable ring (15-9) is installed on the fixed movable ring (15-8) in a sealing mode, the first static ring (15-10) is installed in the collecting grooves (15-17) on the shell (15-7) through springs and connected with the outer side wall of the collecting grooves (15-17) in a sealing mode, the first movable ring (15-9) is attached to the first static ring (15-10), and the second movable ring (15-11) is attached to the second static ring (15-12);
the shell (15-1) is provided with a sealing liquid inlet channel (15-13) and a sealing liquid outlet channel (15-16), the shell (15-1), a first stationary ring (15-10), a first moving ring (15-9), a framework oil seal (15-2) and a shaft sleeve (15-15) are combined to form a closed space C, and the sealing liquid inlet channel (15-13) and the sealing liquid outlet channel (15-16) are respectively connected with the closed space C.
5. The bottom-in mixer for on-line replacement of mechanical seal according to claim 4 is characterized in that the shaft sleeve (15-15) is connected with the mixing shaft (19) in a sealing way through a locking ring (22) and a sealing ring, the fixed movable ring (15-8) is connected with the shaft sleeve (15-15) in a sealing way through a bolt and a sealing ring, the gland (15-3) is fixedly connected with the shaft sleeve (15-15) through a gasket and a bolt, and the gland (15-3), the bearing seat (15-5) and the connecting flange (15-6) are fixedly arranged on the machine seal mounting seat (16) through a bolt; the shell (15-7) is fixedly connected with the connecting flange (15-6) through bolts, and a sealing ring is arranged on the contact surface of the shell; the second stationary ring (15-12) is fixedly arranged in a collecting tank (15-17) on the connecting flange (15-6), and a sealing ring is arranged on the contact surface; the second movable ring (15-11) is fixedly arranged on the shaft sleeve (15-15), a sealing ring is arranged on the contact surface, the first movable ring (15-9) is fixedly arranged on the fixed movable ring (15-8), and the sealing ring is arranged on the contact surface; the first stationary ring (15-10) is arranged in a collecting tank (15-17) on the shell (15-7) through a spring, and a sealing ring is arranged between the first stationary ring and the outer side wall of the collecting tank (15-17);
the sealing liquid inlet channels (15-13) lead into collecting grooves (15-17) on the shell (15-7), and the sealing liquid outlet channels (15-16) are connected into the collecting grooves (15-17) of the connecting flanges (15-6).
6. A mixer of the bottom-in type with on-line replacement of mechanical seal according to claim 3 or 4, characterized in that the flushing water system comprises a water tank, a water pump, a flushing water channel, the flushing water channel comprising a first flushing water channel (15-14), a second flushing water channel (16-2), a space A,
a shell (15-1) of the double-end-face mechanical seal (15) is provided with a first flushing water channel (15-14), the mechanical seal mounting seat (16) is provided with a second flushing water channel (16-2), and the first flushing water channel (15-14) is communicated with the second flushing water channel (16-2) in a sealing mode; a space A is formed between the double-end-face mechanical seal (15) and the mechanical seal mounting seat (16), the stirring shaft (19), the mechanical seal mounting seat (16), the sealing part (18) and the isolating ring (14) isolate a space B, the second flushing water channel (16-2) leads to the space A, and the pressure of the flushing water system is greater than that of the space B.
7. The bottom-in mixer for on-line replacement of mechanical seal according to claim 1, wherein the speed reducer (2) is fixedly connected with the flange (6) and the frame (8) through bolts;
the frame (8) is provided with a bearing seat fixing plate (12), and the bearing seat assembly (10) is fixedly connected with the bearing seat transition plate (11) and the bearing seat fixing plate (12) through bolts.
8. A blender with in-line replacement of mechanical seals according to claim 1, wherein the locking ring (22) comprises an inner ring (22-1) and an outer ring (22-2), the inner ring (22-1) is broken, the outer wall of the inner ring is provided with an inclined surface respectively at the upper and lower parts, the outer ring (22-2) is provided with an inner wall matching with the inclined surface, and the two outer rings (22-2) are locked by bolts.
9. A blender with in-line replacement of mechanical seal as claimed in claim 1, wherein said rigid coupling (7) is split in half and the two halves are bolted together.
10. An online replacement method, characterized in that the bottom-in mixer for online replacement of mechanical seal of claims 1-9 is used, and the steps are as follows:
when the double-end-face mechanical seal needs to be replaced, the liquid sealing system and the water flushing system are closed firstly, the second sealing ring (14-4) of the isolating ring (14) is closed with the sealing part (18), then the speed reducer (2), the flange (6) and the frame (8) are disassembled, then the upper part and the lower part of the rigid coupling (7) are disassembled, then the bearing seat assembly (10) is disassembled from the transition plate (11) and the bearing seat fixing plate (12) of the bearing seat, then the mounting bolts of the double-end-face mechanical seal (15) and the mechanical seal mounting seat (16) are disassembled, at the moment, the double-end-face mechanical seal (15), the bearing seat assembly (10) and the stirring shaft (19) and the sealing part (18) are integrally moved downwards until the sealing part (18) is closed with the mechanical seal mounting seat (16), at the moment, the sealing rings are respectively attached to the sealing part (18) and the mechanical seal mounting seat (16, the double mechanical seal (15) is pulled out for replacement.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055092.5A CN112090317A (en) | 2020-09-30 | 2020-09-30 | Bottom-in type stirrer for online replacement of mechanical seal and online replacement method thereof |
| PCT/CN2020/124574 WO2022067933A1 (en) | 2020-09-30 | 2020-10-29 | Bottom-feeding stirrer allowing for online mechanical seal replacement and online replacement method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055092.5A CN112090317A (en) | 2020-09-30 | 2020-09-30 | Bottom-in type stirrer for online replacement of mechanical seal and online replacement method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112090317A true CN112090317A (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011055092.5A Pending CN112090317A (en) | 2020-09-30 | 2020-09-30 | Bottom-in type stirrer for online replacement of mechanical seal and online replacement method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112090317A (en) |
| WO (1) | WO2022067933A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113617271A (en) * | 2021-07-29 | 2021-11-09 | 浙江长城搅拌设备股份有限公司 | Anti-caking magnetic transmission stirring device for high-viscosity kettle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2683239Y (en) * | 2003-10-27 | 2005-03-09 | 田克俭 | Radial double end sealing four-column type stirring device |
| IT1401799B1 (en) * | 2010-09-29 | 2013-08-28 | Firex S R L | MACHINE FOR MIXING OR CUTTING, PARTICULARLY FOR THE PROCESSING OF FOOD, AGENT WITH PLANETARY MOVEMENT SHAFT |
| US9186636B2 (en) * | 2012-04-19 | 2015-11-17 | Lingyu Dong | Frosty swirl machine |
| CN205146129U (en) * | 2015-10-20 | 2016-04-13 | 江苏中热机械设备有限公司 | (mixing) shaft of side income formula mixer |
| CN108393006A (en) * | 2018-04-23 | 2018-08-14 | 浙江长城搅拌设备股份有限公司 | Can strip replace axle envelope intelligent side stir machine |
| CN111482107A (en) * | 2020-05-15 | 2020-08-04 | 江苏新宏大集团有限公司 | Novel bottom-mounted stirrer and using method thereof |
-
2020
- 2020-09-30 CN CN202011055092.5A patent/CN112090317A/en active Pending
- 2020-10-29 WO PCT/CN2020/124574 patent/WO2022067933A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113617271A (en) * | 2021-07-29 | 2021-11-09 | 浙江长城搅拌设备股份有限公司 | Anti-caking magnetic transmission stirring device for high-viscosity kettle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022067933A1 (en) | 2022-04-07 |
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