CN106122108B - A kind of mechanical face seals of centrifugal pumps flusher - Google Patents
A kind of mechanical face seals of centrifugal pumps flusher Download PDFInfo
- Publication number
- CN106122108B CN106122108B CN201610603735.2A CN201610603735A CN106122108B CN 106122108 B CN106122108 B CN 106122108B CN 201610603735 A CN201610603735 A CN 201610603735A CN 106122108 B CN106122108 B CN 106122108B
- Authority
- CN
- China
- Prior art keywords
- pipe
- centrifugal pump
- branch pipe
- valve
- shut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of mechanical face seals of centrifugal pumps flushers, belong to centrifugation pump technical field, including the flushing pipe being connected on centrifugal pump, the liquid feeding end of flushing pipe and the outlet end of centrifugal pump connect, the outlet end of flushing pipe and the mechanical connection of centrifugal pump, it is characterized by: being connected with tubular filter in the flushing pipe, pressure gauge and restricting orifice, the tubular filter is close to the outlet end of centrifugal pump, mechanical seal of the restricting orifice close to centrifugal pump, the first shut-off valve and the second shut-off valve are provided in the flushing pipe, first shut-off valve is located between the outlet end and tubular filter of centrifugal pump, second shut-off valve is between pressure gauge and restricting orifice.The present invention can either play good cooling effect to mechanical seal, and can prevent deposited particles impurity on dynamic and static ring sealing face, effective protection dynamic and static ring sealing face, reduce abrasion, improve sealing effect, and then ensure the operation of centrifugal pump normal table.
Description
Technical field
The present invention relates to centrifugation pump technical field more particularly to a kind of mechanical face seals of centrifugal pumps flushers.
Background technique
Centrifugal pump is that the centrifugal force generated by the impeller of rotary pump drives the rotation of fluid to complete the dress of fluid conveying
It sets.
The essential structure of centrifugal pump includes six parts, is impeller, the pump housing, pump shaft, bearing, sealing ring and stuffing-box respectively.
Wherein, impeller is the core of centrifugal pump, its revolving speed high output is big, and the blade on impeller plays main function again, and impeller exists
It to be tested by static balance before assembly.Surfaces externally and internally on impeller is required to be smooth, to reduce the friction loss of water flow.The pump housing is also referred to as
Pump case, it is the main body of water pump.Support fixed function is played, and is connected with the bracket of installation bearing.The effect of pump shaft be by
The torque of motor is transmitted to impeller, is the main component for transmitting mechanical energy.Stuffing-box mainly by filler, seal cage, filling tube, fill out
Expect gland, water sealing (sealing water) pipe composition.Stuffing-box effect primarily to closing pump case and pump shaft between gap, do not allow pump in water
It flows to outside to come, does not also allow the air of outside to enter in pump, remain the vacuum in water pump.When pump shaft and filler friction produce
Heat amount, it is necessary to filler be cooled down, to keep the normal operation of water pump.
It is mainly caused by being failed as mechanical seal that centrifugal pump, which is shut down,.The performance of failure is mostly leakage, and leakaging cause has
It is a variety of, during actual use it is the most outstanding the reason is that dynamic and static ring sealing face leakage.It is mainly manifested in: sealing surface when installation
Gap is excessive, and flushing liquor has little time to take away the by-produced heat that rubs；Flushing liquor leaks from sealing surface gap, causes end face mistake
Heat and damage；Liquid medium vaporized expanding separates both ends of the surface by vaporized expanding power, when two sealing surfaces are firmly bonded, breaks
Bad lubricating film is to cause end face surface to overheat；In addition, the silt that river water is mingled with increases, to dynamic and static ring with the arrival in rainy season
Sealing surface generates biggish abrasion, can all mechanical seal be caused to be failed.
Publication No. CN 201661507U, publication date are that the Chinese patent literature on December 01st, 2010 discloses one kind
Mechanical seal combined part of the centrifugal multistage pump multiple centrifugal pump with cooling water washing, it by inlet segment, parts of bearings, fastening bolt nut, into
Water section outer side seal circle, inlet segment inner seal circle, axle envelope shell, mechanical gland, pump shaft, mechanical gland ring, machinery are close
Envelope, pump shaft axle sleeve composition, it is characterised in that: pump shaft axle sleeve is set on pump shaft；The mechanical seal being sleeved on pump shaft axle sleeve
In axle envelope shell and machine sealed cover, the mechanical seal left side for making axially position is separately installed in mechanical seal arranged on left and right sides
Positioning pin and the right positioning pin of mechanical seal；Both axle envelope shell and machine sealed cover connect bolt by machine sealed cover and are connected, and
Install organic sealed cover sealing ring additional between the two；Axle envelope shell is mounted and is clamped between inlet segment and parts of bearings, bearing portion
It is fastened together between part and inlet segment by fastening bolt nut, is added respectively between axle envelope shell and inlet segment
Inlet segment outer side seal circle and inlet segment inner seal circle；In the intracorporal cooling water intake of axle envelope shell, cooling water cavity and cold
But water water outlet is interconnected, and cooling water cavity, flushing water inlet are also connected with water out is rinsed；It is opened on axle envelope shell
Organic sealed cover installation threaded hole and shutdown discharge outlet.
Mechanical seal combined part of the centrifugal multistage pump multiple centrifugal pump disclosed in the patent document with cooling water washing, since structure designs
Unreasonable, the import of inlet segment flushing liquor can bring partial impurities into mechanical cavity and axle envelope gap, even rinse also only
It is that can take away certain media, after long-time service, sealing effect is poor.
Publication No. CN 203685667U, publication date are that on 07 02nd, 2014 Chinese patent literature discloses one kind
Horizontal centrifugal pump mechanical sealing, axle sleeve and pump by axis be keyed together with, machine envelope stationary ring and machine envelope rotating ring be socketed in axis
Set is external, forms friction pair, and machine envelope stationary seat is socketed in outside machine envelope stationary ring and machine envelope rotating ring and connect with the pump housing, machine envelope stationary seat
One end is equipped with machine sealing flushing liquid entrance, which is characterized in that machine sealing flushing liquid inlet is equipped with throttling stop valve, machine Feng Jinghuan
One end opposite with machine sealing flushing liquid entrance is exported equipped with machine sealing flushing liquid on seat, and the outlet of machine sealing flushing liquid is connected by reflux pipeline
It is connected to pump inlet, machine seals rotating ring and is connected by more flexible compensation springs with machine envelope rotating seat, and machine seals rotating seat socket
Outside axle sleeve.
Horizontal centrifugal pump mechanical sealing disclosed in the patent document, machine sealing flushing are in convection current trend, and flushing liquor passes through pipe
Road returns to pump intake, and the impurity in flushing liquor easily rests on the complicated position of machine sealing chamber, causes residual or accumulated impurities in machine envelope,
The envelope abrasion of aggravation machine.
Summary of the invention
The present invention in order to overcome the defects of the prior art described above, provides a kind of mechanical face seals of centrifugal pumps flusher, this hair
It is bright, good cooling effect can either be played to mechanical seal, and can prevent deposited particles impurity on dynamic and static ring sealing face, have
Effect protection dynamic and static ring sealing face, reduces abrasion, improves sealing effect, and then ensure the operation of centrifugal pump normal table.
The present invention is achieved through the following technical solutions:
A kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe being connected on centrifugal pump, the liquid feeding end of flushing pipe
It is connect with the outlet end of centrifugal pump, the outlet end of flushing pipe and the mechanical connection of centrifugal pump, it is characterised in that: the flushing
Tubular filter, pressure gauge and restricting orifice are connected on pipe, the tubular filter is close to the outlet end of centrifugal pump, the section
Discharge orifice plate is provided with the first shut-off valve and the second shut-off valve in the flushing pipe close to the mechanical seal of centrifugal pump, and described first
Shut-off valve is located between the outlet end and tubular filter of centrifugal pump, second shut-off valve be located at pressure gauge and restricting orifice it
Between.
It further include suspension separator, the outlet end of described suspension separator one end and centrifugal pump connects, the other end and flushing
The liquid feeding end of pipe connects.
The flushing pipe includes supervisor, the first branch pipe and the second branch pipe, close to first of the outlet end side of centrifugal pump
It is connected with the first shut-off valve, tubular filter, pressure gauge and the second shut-off valve on pipe in turn；Close to the outlet end side of centrifugal pump
The second branch pipe on be connected with the first shut-off valve, tubular filter, pressure gauge and the second shut-off valve in turn；First branch pipe and second
Branch pipe is arranged side by side, and the restricting orifice is connected on supervisor.
The restricting orifice is two, and a restricting orifice is arranged on the first branch pipe, and the setting of another restricting orifice exists
On second branch pipe.
Heat tracing pipe, the helically wound formula arrangement of heat tracing pipe are provided on first branch pipe and the second branch pipe.
Cooling-part is provided on the supervisor, cooling-part includes water tank, coil pipe and bimetallic arranged on the water tank
Thermometer, coil pipe are arranged in the inner bottom wall of water tank, and bimetallic thermometer stretches to the inner bottom wall of water tank, and water tank and supervisor connect
It is logical.
Venturi tube is provided on the supervisor, Venturi tube is between cooling-part and mechanical seal, Venturi tube
It is made of one piece by contraction section, cylindrical section and expansion segment, contraction section is connected by flange and supervisor, expansion segment and mechanical seal
Connection.
It is provided with shunting disk, shunting disk and expansion segment detachable connection on the expansion segment, is uniformly distributed on shunting disk
There are more jet pipes.
It is connected with the first elbow on first branch pipe, the second elbow, the first elbow and second are connected on the second branch pipe
Elbow is arranged diagonal.
Be provided with blow-down pipe on first branch pipe and the second branch pipe, blow-down pipe be located at tubular filter and pressure gauge it
Between.
Beneficial effects of the present invention are mainly manifested in following aspect:
One, of the invention, be connected with tubular filter, pressure gauge and restricting orifice in flushing pipe, tubular filter close to from
The outlet end of heart pump, restricting orifice are provided with the first shut-off valve and the second cut-off in flushing pipe close to the mechanical seal of centrifugal pump
Valve, the first shut-off valve are located between the outlet end and tubular filter of centrifugal pump, and the second shut-off valve is located at pressure gauge and throttle orifice
Between plate, medium can be cut off by the first shut-off valve, be conveniently replaceable flushing pipe and cleaning tubular filter；Pressure gauge can be with
When monitoring flushing pipe pipeline pressure variation；In use, entire flusher is mounted on centrifugal pump, from the outlet end of centrifugal pump
Medium out flow to the mechanical seal of centrifugal pump as flushing liquor through flushing pipe, is rinsed to mechanical seal, return again to from
In heart pump, a flush loop is formed；Due to being connected with tubular filter in flushing pipe, tubular filter can will be in flushing liquor
The solid particle mixed is filtered, then is defined through pipeline flow of the restricting orifice to flushing pipe, and punching can be effectively reduced
The pipeline pressure of pipe is washed, while playing the effect of current limliting decompression, make the flushing liquor stability of flow for eventually entering into mechanical seal and is done
Only, cooling effect can either be played to mechanical seal, ensure that mechanical seal chamber medium-high viscosity, low cloud point medium will not be precipitated,
Also avoid be precipitated after colloid heat up under the running at high speed of axis, coking and by mechanical seal locking, damage；It again being capable of anti-stop
Sealing effect is improved in deposited particles impurity on stationary ring sealing surface, effective protection dynamic and static ring sealing face, and then ensures that centrifugal pump is normal
Stable operation.
Two, of the invention, it further include suspension separator, the outlet end connection of suspension separator one end and centrifugal pump, the other end
It connect with the liquid feeding end of flushing pipe, solid particle in flushing liquor can be separated by suspension separator, make to enter postorder
Flushing liquor in tubular filter is cleaner, can guarantee not to be blocked after tubular filter is used for a long time, and then ensure and rinse
The cleaning solution of mechanical seal particle free from foreign meter reduces mechanical seal loss, mechanical seal is made to keep good sealing for a long time
Effect.
Three, of the invention, flushing pipe includes supervisor, the first branch pipe and the second branch pipe, close to the outlet end side of centrifugal pump
It is connected with the first shut-off valve, tubular filter, pressure gauge and the second shut-off valve on first branch pipe in turn；Close to the outlet of centrifugal pump
It holds and is connected with the first shut-off valve, tubular filter, pressure gauge and the second shut-off valve in turn on the second branch pipe of side；First branch pipe
It is arranged side by side with the second branch pipe, the restricting orifice is connected on supervisor, the flushing pipeline of two-way parallel connection distribution is formed, when any
When tubular filter blocks all the way, the pressure of the pressure gauge of the road will decline, at this time by the first cut-off of the road
Valve and the second shut-off valve are closed, i.e., the tubular filter of the road capable of washing；And the flushing pipeline of another way is able to maintain simultaneously
Mechanical seal is cleaned, reduces mechanical seal loss, and then extend the service life of centrifugal pump, whole process is without stopping
Centrifugal pump can guarantee the working efficiency of centrifugal pump.
Four, of the invention, restricting orifice is two, and a restricting orifice is arranged on the first branch pipe, another restricting orifice
It is arranged on the second branch pipe, by being arranged two restricting orifices, two restricting orifices being capable of independent independent control road flushing pipe
Pipeline flow, reduce the pipeline pressure of the road flushing pipe, current limliting antihypertensive effect is obvious, is conducive to carry out mechanical seal comprehensive
It rinses.
Five, of the invention, it is provided with heat tracing pipe on the first branch pipe and the second branch pipe, heat tracing pipe can be to rushing in flushing pipe
Washing lotion is heated, and prevents highly viscous flushing liquor hardened, improves the mobility of high viscosity flushing liquor, and heat tracing pipe is helically wound
Formula arrangement not only increases the contact area of heat tracing pipe and the first branch pipe and the second branch pipe, and contact uniformity is good, can make
First branch pipe and the second branch pipe are heated evenly, and further increase the mobility of high viscosity flushing liquor, and mechanical seal is rushed in guarantee
Wash effect.
Six, of the invention, it is provided with cooling-part on supervisor, cooling-part includes water tank, coil pipe and arranged on the water tank
Bimetallic thermometer, coil pipe are arranged in the inner bottom wall of water tank, and bimetallic thermometer stretches to the inner bottom wall of water tank, water tank and master
Pipe connection, coil pipe can play the role of water-bath heat in water tank and change, and to adjust the temperature of flushing liquor, pass through bimetallic thermometer
Water temperature in water tank can be intuitively observed, there is suitable temperature to the flushing liquor that mechanical seal is rinsed so as to ensure,
Reduce dynamic and static ring sealing face generate pattern cracking, effectively prevent high temperature burst phenomenon generation, and then extend centrifugal pump use the longevity
Life.
Seven, of the invention, it is provided with Venturi tube on supervisor, Venturi tube is between cooling-part and mechanical seal, text
Venturi is made of one piece by contraction section, cylindrical section and expansion segment, and contraction section is connected by flange and supervisor, expansion segment and machine
Tool is tightly connected, and using Venturi tube, is further mentioned after contraction section, cylindrical section from the flushing flow velocity that expansion segment comes out
Height, flushing liquor pressure is more preferable, can carry out good flushing to mechanical seal.
Eight, of the invention, it is provided with shunting disk, shunting disk and expansion segment detachable connection on expansion segment, is replaced and cleaned all
It is quite convenient, it is evenly distributed with more jet pipes on shunting disk, further increases the flushing pressure of flushing liquor, and can be equal
Even is rinsed mechanical seal, and flushing effect is more preferable.
Nine, of the invention, it is connected with the first elbow on the first branch pipe, the second elbow, the first elbow are connected on the second branch pipe
It is arranged diagonal with the second elbow, by setting the first elbow and the second elbow, it is on the corner suffered that flushing liquor can be reduced
Resistance ensures that flushing liquor has good mobility, and then is conducive to guarantee the flushing effect to mechanical seal.
Ten, of the invention, it is provided with blow-down pipe on the first branch pipe and the second branch pipe, blow-down pipe is located at tubular filter and pressure
Between power table, when needing to clean tubular filter, the first shut-off valve and the second shut-off valve are all closed, and can will rinse pipeline
Interior pressure is vented by blow-down pipe, then cleans tubular filter, and pressure would not be had by rinsing in pipeline, and cleaning is more pacified
It is complete convenient.
Detailed description of the invention
The present invention is described in further detail below in conjunction with specification drawings and specific embodiments, in which:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 3；
Fig. 4 is the structural schematic diagram of the embodiment of the present invention 4；
Fig. 5 is the structural schematic diagram of the embodiment of the present invention 5；
Fig. 6 is the structural schematic diagram of Venturi tube in the embodiment of the present invention 6；
Fig. 7 is the structural schematic diagram of the first branch pipe and the second branch pipe in the embodiment of the present invention 7；
Marked in the figure: 1, flushing pipe, 2, outlet end, 3, mechanical seal, 4, tubular filter, 5, pressure gauge, 6, throttle orifice
Plate, the 7, first shut-off valve, the 8, second shut-off valve, 9, suspension separator, 10, supervisor, the 11, first branch pipe, the 12, second branch pipe, 13,
Heat tracing pipe, 14, water tank, 15, coil pipe, 16, bimetallic thermometer, 17, Venturi tube, 18, contraction section, 19, cylindrical section, 20, expansion
Open section, 21, shunting disk, 22, jet pipe, the 23, first elbow, the 24, second elbow, 25, blow-down pipe.
Specific embodiment
Embodiment 1
Referring to Fig. 1, a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe 1 being connected on centrifugal pump, flushing pipe
1 liquid feeding end and the outlet end 2 of centrifugal pump connect, and the mechanical seal 3 of the outlet end and centrifugal pump of flushing pipe 1 connects, the punching
It washes on pipe 1 and is connected with tubular filter 4, pressure gauge 5 and restricting orifice 6, the tubular filter 4 is close to the outlet end of centrifugal pump
2, the restricting orifice 6 is provided with the first shut-off valve 7 and the second cut-off in the flushing pipe 1 close to the mechanical seal 3 of centrifugal pump
Valve 8, first shut-off valve 7 are located between the outlet end 2 and tubular filter 4 of centrifugal pump, and second shut-off valve 8 is located at pressure
Between power table 5 and restricting orifice 6.
The present embodiment is most basic embodiment, is connected with tubular filter, pressure gauge and restricting orifice in flushing pipe,
For tubular filter close to the outlet end of centrifugal pump, restricting orifice is provided with first in flushing pipe close to the mechanical seal of centrifugal pump
Shut-off valve and the second shut-off valve, the first shut-off valve are located between the outlet end and tubular filter of centrifugal pump, the second shut-off valve position
Between pressure gauge and restricting orifice, medium can be cut off by the first shut-off valve, be conveniently replaceable flushing pipe and cleaning tubular type mistake
Filter；Pressure gauge can monitor the variation of flushing pipe pipeline pressure at any time；In use, entire flusher is mounted on centrifugal pump
On, the medium come out from the outlet end of centrifugal pump flow to the mechanical seal of centrifugal pump as flushing liquor through flushing pipe, to mechanical close
Envelope is rinsed, and is returned again in centrifugal pump, and a flush loop is formed；Due to being connected with tubular filter, tubular type in flushing pipe
The solid particle mixed in flushing liquor can be filtered by filter, then be carried out through pipeline flow of the restricting orifice to flushing pipe
It limits, the pipeline pressure of flushing pipe can be effectively reduced, while playing the effect of current limliting decompression, make to eventually enter into mechanical seal
Flushing liquor stability of flow and clean, can either play cooling effect to mechanical seal, ensure that mechanical seal chamber medium-high viscosity, low
Cloud point medium will not be precipitated, also avoid be precipitated after colloid heat up under the running at high speed of axis, coking and by mechanical seal locking,
Damage；Deposited particles impurity on dynamic and static ring sealing face can be prevented again, sealing effect is improved in effective protection dynamic and static ring sealing face,
And then ensure the operation of centrifugal pump normal table.
Embodiment 2
Referring to fig. 2, a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe 1 being connected on centrifugal pump, flushing pipe
1 liquid feeding end and the outlet end 2 of centrifugal pump connect, and the mechanical seal 3 of the outlet end and centrifugal pump of flushing pipe 1 connects, the punching
It washes on pipe 1 and is connected with tubular filter 4, pressure gauge 5 and restricting orifice 6, the tubular filter 4 is close to the outlet end of centrifugal pump
2, the restricting orifice 6 is provided with the first shut-off valve 7 and the second cut-off in the flushing pipe 1 close to the mechanical seal 3 of centrifugal pump
Valve 8, first shut-off valve 7 are located between the outlet end 2 and tubular filter 4 of centrifugal pump, and second shut-off valve 8 is located at pressure
Between power table 5 and restricting orifice 6.
It further include suspension separator 9, the outlet end 2 of described 9 one end of suspension separator and centrifugal pump connects, the other end and punching
Wash the liquid feeding end connection of pipe 1.
The flushing pipe 1 includes the 10, first branch pipe 11 of supervisor and the second branch pipe 12, close to 2 side of outlet end of centrifugal pump
The first branch pipe 11 on be connected with the first shut-off valve 7, tubular filter 4, pressure gauge 5 and the second shut-off valve 8 in turn；Close to centrifugation
The first shut-off valve 7, tubular filter 4, pressure gauge 5 and second are connected in turn on second branch pipe 12 of 2 side of outlet end of pump
Shut-off valve 8；First branch pipe 11 and the second branch pipe 12 are arranged side by side, and are connected with the restricting orifice 6 on supervisor 10.
The present embodiment is a better embodiment, further includes suspension separator, and suspension separator one end and centrifugal pump go out
The liquid feeding end of the connection of mouth end, the other end and flushing pipe connects, and can be separated solid particle in flushing liquor by suspension separator
Out, make the flushing liquor entered in postorder tubular filter cleaner, can guarantee not to be blocked after tubular filter is used for a long time
Plug, and then ensure the cleaning solution particle free from foreign meter for rinsing mechanical seal, mechanical seal loss is reduced, makes mechanical seal for a long time
It keeps good sealing effectiveness.Flushing pipe includes supervisor, the first branch pipe and the second branch pipe, close to the outlet end side of centrifugal pump
It is connected with the first shut-off valve, tubular filter, pressure gauge and the second shut-off valve on first branch pipe in turn；Close to the outlet of centrifugal pump
It holds and is connected with the first shut-off valve, tubular filter, pressure gauge and the second shut-off valve in turn on the second branch pipe of side；First branch pipe
It is arranged side by side with the second branch pipe, the restricting orifice is connected on supervisor, the flushing pipeline of two-way parallel connection distribution is formed, when any
When tubular filter blocks all the way, the pressure of the pressure gauge of the road will decline, at this time by the first cut-off of the road
Valve and the second shut-off valve are closed, i.e., the tubular filter of the road capable of washing；And the flushing pipeline of another way is able to maintain simultaneously
Mechanical seal is cleaned, reduces mechanical seal loss, and then extend the service life of centrifugal pump, whole process is without stopping
Centrifugal pump can guarantee the working efficiency of centrifugal pump.
Embodiment 3
Referring to Fig. 3, a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe 1 being connected on centrifugal pump, flushing pipe
1 liquid feeding end and the outlet end 2 of centrifugal pump connect, and the mechanical seal 3 of the outlet end and centrifugal pump of flushing pipe 1 connects, the punching
It washes on pipe 1 and is connected with tubular filter 4, pressure gauge 5 and restricting orifice 6, the tubular filter 4 is close to the outlet end of centrifugal pump
2, the restricting orifice 6 is provided with the first shut-off valve 7 and the second cut-off in the flushing pipe 1 close to the mechanical seal 3 of centrifugal pump
Valve 8, first shut-off valve 7 are located between the outlet end 2 and tubular filter 4 of centrifugal pump, and second shut-off valve 8 is located at pressure
Between power table 5 and restricting orifice 6.
It further include suspension separator 9, the outlet end 2 of described 9 one end of suspension separator and centrifugal pump connects, the other end and punching
Wash the liquid feeding end connection of pipe 1.
The flushing pipe 1 includes the 10, first branch pipe 11 of supervisor and the second branch pipe 12, close to 2 side of outlet end of centrifugal pump
The first branch pipe 11 on be connected with the first shut-off valve 7, tubular filter 4, pressure gauge 5 and the second shut-off valve 8 in turn；Close to centrifugation
The first shut-off valve 7, tubular filter 4, pressure gauge 5 and second are connected in turn on second branch pipe 12 of 2 side of outlet end of pump
Shut-off valve 8；First branch pipe 11 and the second branch pipe 12 are arranged side by side.
The restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first branch pipe 11, another restricting orifice 6 is set
It sets on the second branch pipe 12.
Heat tracing pipe 13, the helically wound formula cloth of heat tracing pipe 13 are provided on first branch pipe 11 and the second branch pipe 12
It sets.
The present embodiment is another better embodiment, and restricting orifice is two, and a restricting orifice is arranged in the first branch pipe
On, another restricting orifice is arranged on the second branch pipe, and by the way that two restricting orifices are arranged, two restricting orifices can individually solely
The vertical pipeline flow for controlling the road flushing pipe, reduces the pipeline pressure of the road flushing pipe, and current limliting antihypertensive effect is obvious, is conducive to machine
Tool sealing is comprehensively rinsed.Heat tracing pipe is provided on first branch pipe and the second branch pipe, heat tracing pipe can be in flushing pipe
Flushing liquor heated, prevent highly viscous flushing liquor hardened, improve high viscosity flushing liquor mobility, heat tracing pipe is helically
Wound form arrangement not only increases the contact area of heat tracing pipe and the first branch pipe and the second branch pipe, and contact uniformity is good, energy
It is enough heated evenly the first branch pipe and the second branch pipe, further increases the mobility of high viscosity flushing liquor, ensure to mechanical seal
Flushing effect.
Embodiment 4
Referring to fig. 4, a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe 1 being connected on centrifugal pump, flushing pipe
1 liquid feeding end and the outlet end 2 of centrifugal pump connect, and the mechanical seal 3 of the outlet end and centrifugal pump of flushing pipe 1 connects, the punching
It washes on pipe 1 and is connected with tubular filter 4, pressure gauge 5 and restricting orifice 6, the tubular filter 4 is close to the outlet end of centrifugal pump
2, the restricting orifice 6 is provided with the first shut-off valve 7 and the second cut-off in the flushing pipe 1 close to the mechanical seal 3 of centrifugal pump
Valve 8, first shut-off valve 7 are located between the outlet end 2 and tubular filter 4 of centrifugal pump, and second shut-off valve 8 is located at pressure
Between power table 5 and restricting orifice 6.
It further include suspension separator 9, the outlet end 2 of described 9 one end of suspension separator and centrifugal pump connects, the other end and punching
Wash the liquid feeding end connection of pipe 1.
The flushing pipe 1 includes the 10, first branch pipe 11 of supervisor and the second branch pipe 12, close to 2 side of outlet end of centrifugal pump
The first branch pipe 11 on be connected with the first shut-off valve 7, tubular filter 4, pressure gauge 5 and the second shut-off valve 8 in turn；Close to centrifugation
The first shut-off valve 7, tubular filter 4, pressure gauge 5 and second are connected in turn on second branch pipe 12 of 2 side of outlet end of pump
Shut-off valve 8；First branch pipe 11 and the second branch pipe 12 are arranged side by side.
The restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first branch pipe 11, another restricting orifice 6 is set
It sets on the second branch pipe 12.
Heat tracing pipe 13, the helically wound formula cloth of heat tracing pipe 13 are provided on first branch pipe 11 and the second branch pipe 12
It sets.
Cooling-part is provided on the supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged in the inner bottom wall of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Bottom wall, water tank 14 are connected to supervisor 10.
The present embodiment is another better embodiment, is provided with cooling-part on supervisor, cooling-part includes water tank, coil pipe
With bimetallic thermometer arranged on the water tank, coil pipe is arranged in the inner bottom wall of water tank, and bimetallic thermometer stretches to water tank
Inner bottom wall, water tank with supervisor be connected to, coil pipe can play the role of water-bath heat in water tank and change, to adjust the temperature of flushing liquor
Degree, can intuitively observe water temperature in water tank by bimetallic thermometer, rush so as to ensure to what mechanical seal was rinsed
Washing lotion has suitable temperature, reduces dynamic and static ring sealing face and generates pattern cracking, effectively prevent high temperature to burst phenomenon generation, in turn
Extend the service life of centrifugal pump.
Embodiment 5
Referring to Fig. 5, a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe 1 being connected on centrifugal pump, flushing pipe
1 liquid feeding end and the outlet end 2 of centrifugal pump connect, and the mechanical seal 3 of the outlet end and centrifugal pump of flushing pipe 1 connects, the punching
It washes on pipe 1 and is connected with tubular filter 4, pressure gauge 5 and restricting orifice 6, the tubular filter 4 is close to the outlet end of centrifugal pump
2, the restricting orifice 6 is provided with the first shut-off valve 7 and the second cut-off in the flushing pipe 1 close to the mechanical seal 3 of centrifugal pump
Valve 8, first shut-off valve 7 are located between the outlet end 2 and tubular filter 4 of centrifugal pump, and second shut-off valve 8 is located at pressure
Between power table 5 and restricting orifice 6.
It further include suspension separator 9, the outlet end 2 of described 9 one end of suspension separator and centrifugal pump connects, the other end and punching
Wash the liquid feeding end connection of pipe 1.
The flushing pipe 1 includes the 10, first branch pipe 11 of supervisor and the second branch pipe 12, close to 2 side of outlet end of centrifugal pump
The first branch pipe 11 on be connected with the first shut-off valve 7, tubular filter 4, pressure gauge 5 and the second shut-off valve 8 in turn；Close to centrifugation
The first shut-off valve 7, tubular filter 4, pressure gauge 5 and second are connected in turn on second branch pipe 12 of 2 side of outlet end of pump
Shut-off valve 8；First branch pipe 11 and the second branch pipe 12 are arranged side by side.
The restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first branch pipe 11, another restricting orifice 6 is set
It sets on the second branch pipe 12.
Heat tracing pipe 13, the helically wound formula cloth of heat tracing pipe 13 are provided on first branch pipe 11 and the second branch pipe 12
It sets.
Cooling-part is provided on the supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged in the inner bottom wall of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Bottom wall, water tank 14 are connected to supervisor 10.
It is provided with Venturi tube 17 on the supervisor 10, Venturi tube 17 is between cooling-part and mechanical seal 3, text
Venturi 17 is made of one piece by contraction section 18, cylindrical section 19 and expansion segment 20, and contraction section 18 is connected by flange and supervisor 10
It connects, expansion segment 20 is connect with mechanical seal 3.
The present embodiment is another better embodiment, is provided with Venturi tube on supervisor, Venturi tube is located at cooling-part
Between mechanical seal, Venturi tube is made of one piece by contraction section, cylindrical section and expansion segment, and contraction section passes through flange and master
Pipe connection, expansion segment and mechanical connection, the flushing using Venturi tube, after contraction section, cylindrical section from expansion segment out
Flow velocity is further enhanced, and flushing liquor pressure is more preferable, can carry out good flushing to mechanical seal.
Embodiment 6
Referring to figs. 5 and 6, a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe 1 being connected on centrifugal pump,
The liquid feeding end of flushing pipe 1 and the outlet end 2 of centrifugal pump connect, and the mechanical seal 3 of the outlet end and centrifugal pump of flushing pipe 1 connects,
It is connected with tubular filter 4, pressure gauge 5 and restricting orifice 6 in the flushing pipe 1, the tubular filter 4 is close to centrifugal pump
Outlet end 2, the restricting orifice 6 are provided with the first shut-off valve 7 and in the flushing pipe 1 close to the mechanical seal 3 of centrifugal pump
Two shut-off valves 8, first shut-off valve 7 are located between the outlet end 2 and tubular filter 4 of centrifugal pump, second shut-off valve 8
Between pressure gauge 5 and restricting orifice 6.
It further include suspension separator 9, the outlet end 2 of described 9 one end of suspension separator and centrifugal pump connects, the other end and punching
Wash the liquid feeding end connection of pipe 1.
The flushing pipe 1 includes the 10, first branch pipe 11 of supervisor and the second branch pipe 12, close to 2 side of outlet end of centrifugal pump
The first branch pipe 11 on be connected with the first shut-off valve 7, tubular filter 4, pressure gauge 5 and the second shut-off valve 8 in turn；Close to centrifugation
The first shut-off valve 7, tubular filter 4, pressure gauge 5 and second are connected in turn on second branch pipe 12 of 2 side of outlet end of pump
Shut-off valve 8；First branch pipe 11 and the second branch pipe 12 are arranged side by side.
The restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first branch pipe 11, another restricting orifice 6 is set
It sets on the second branch pipe 12.
Heat tracing pipe 13, the helically wound formula cloth of heat tracing pipe 13 are provided on first branch pipe 11 and the second branch pipe 12
It sets.
Cooling-part is provided on the supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged in the inner bottom wall of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Bottom wall, water tank 14 are connected to supervisor 10.
It is provided with Venturi tube 17 on the supervisor 10, Venturi tube 17 is between cooling-part and mechanical seal 3, text
Venturi 17 is made of one piece by contraction section 18, cylindrical section 19 and expansion segment 20, and contraction section 18 is connected by flange and supervisor 10
It connects, expansion segment 20 is connect with mechanical seal 3.
Shunting disk 21, shunting disk 21 and 20 detachable connection of expansion segment, shunting disk 21 are provided on the expansion segment 20
On be evenly distributed with more jet pipes 22.
The present embodiment is another better embodiment, is provided with shunting disk on expansion segment, shunting disk is detachable with expansion segment
Formula connection, is replaced and cleaned all quite convenient, more jet pipes is evenly distributed on shunting disk, further increase rushing for flushing liquor
Pressure is washed, and uniformly mechanical seal can be rinsed, flushing effect is more preferable.
Embodiment 7
Referring to Fig. 5-Fig. 7, a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe 1 being connected on centrifugal pump, punching
The outlet end 2 of the liquid feeding end and centrifugal pump of washing pipe 1 connects, and the mechanical seal 3 of the outlet end and centrifugal pump of flushing pipe 1 connects, institute
It states and is connected with tubular filter 4, pressure gauge 5 and restricting orifice 6 in flushing pipe 1, the tubular filter 4 goes out close to centrifugal pump
Mouthful end 2, the restricting orifice 6 are provided with the first shut-off valve 7 and second in the flushing pipe 1 close to the mechanical seal 3 of centrifugal pump
Shut-off valve 8, first shut-off valve 7 are located between the outlet end 2 and tubular filter 4 of centrifugal pump, second shut-off valve 8
Between pressure gauge 5 and restricting orifice 6.
It further include suspension separator 9, the outlet end 2 of described 9 one end of suspension separator and centrifugal pump connects, the other end and punching
Wash the liquid feeding end connection of pipe 1.
The flushing pipe 1 includes the 10, first branch pipe 11 of supervisor and the second branch pipe 12, close to 2 side of outlet end of centrifugal pump
The first branch pipe 11 on be connected with the first shut-off valve 7, tubular filter 4, pressure gauge 5 and the second shut-off valve 8 in turn；Close to centrifugation
The first shut-off valve 7, tubular filter 4, pressure gauge 5 and second are connected in turn on second branch pipe 12 of 2 side of outlet end of pump
Shut-off valve 8；First branch pipe 11 and the second branch pipe 12 are arranged side by side.
The restricting orifice 6 is two, and a restricting orifice 6 is arranged on the first branch pipe 11, another restricting orifice 6 is set
It sets on the second branch pipe 12.
Heat tracing pipe 13, the helically wound formula cloth of heat tracing pipe 13 are provided on first branch pipe 11 and the second branch pipe 12
It sets.
Cooling-part is provided on the supervisor 10, cooling-part includes water tank 14, coil pipe 15 and is arranged on water tank 14
Bimetallic thermometer 16, coil pipe 15 is arranged in the inner bottom wall of water tank 14, and bimetallic thermometer 16 stretches to the interior of water tank 14
Bottom wall, water tank 14 are connected to supervisor 10.
It is provided with Venturi tube 17 on the supervisor 10, Venturi tube 17 is between cooling-part and mechanical seal 3, text
Venturi 17 is made of one piece by contraction section 18, cylindrical section 19 and expansion segment 20, and contraction section 18 is connected by flange and supervisor 10
It connects, expansion segment 20 is connect with mechanical seal 3.
Shunting disk 21, shunting disk 21 and 20 detachable connection of expansion segment, shunting disk 21 are provided on the expansion segment 20
On be evenly distributed with more jet pipes 22.
It is connected with the first elbow 23 on first branch pipe 11, the second elbow 24 is connected on the second branch pipe 12, first is curved
First 23 and second elbow 24 be arranged diagonal.
Blow-down pipe 25 is provided on first branch pipe 11 and the second branch pipe 12, blow-down pipe 25 is located at tubular filter 4
Between pressure gauge 5.
The present embodiment is preferred forms, and tubular filter, pressure gauge and restricting orifice, tubular type are connected in flushing pipe
For filter close to the outlet end of centrifugal pump, restricting orifice is provided with the first cut-off in flushing pipe close to the mechanical seal of centrifugal pump
Valve and the second shut-off valve, the first shut-off valve are located between the outlet end and tubular filter of centrifugal pump, and the second shut-off valve is located at pressure
Between power table and restricting orifice, medium can be cut off by the first shut-off valve, be conveniently replaceable flushing pipe and cleaning tubular filter；
Pressure gauge can monitor the variation of flushing pipe pipeline pressure at any time；In use, entire flusher is mounted on centrifugal pump, from from
The medium that the outlet end of heart pump comes out flow to the mechanical seal of centrifugal pump as flushing liquor through flushing pipe, rushes to mechanical seal
It washes, returns again in centrifugal pump, form a flush loop；Due to being connected with tubular filter, tubular filter energy in flushing pipe
It is enough to be filtered the solid particle mixed in flushing liquor, then be defined through pipeline flow of the restricting orifice to flushing pipe, it can
The pipeline pressure of flushing pipe is effectively reduced, while the effect of current limliting decompression is played, makes the flushing liquor for eventually entering into mechanical seal
Stability of flow and clean, can either play cooling effect to mechanical seal, ensure that mechanical seal chamber medium-high viscosity, low cloud point are situated between
Matter will not be precipitated, also avoid be precipitated after colloid heat up under the running at high speed of axis, coking and by mechanical seal locking, damage；
Deposited particles impurity on dynamic and static ring sealing face can be prevented again, and sealing effect, Jin Erbao are improved in effective protection dynamic and static ring sealing face
Hinder the operation of centrifugal pump normal table.It is connected with the first elbow on first branch pipe, is connected with the second elbow on the second branch pipe, first
Elbow and the second elbow are arranged diagonal, and by the first elbow of setting and the second elbow, can reduce flushing liquor on the corner institute
The resistance received ensures that flushing liquor has good mobility, and then is conducive to guarantee the flushing effect to mechanical seal.First branch pipe
With blow-down pipe is provided on the second branch pipe, blow-down pipe is between tubular filter and pressure gauge, when needing to clean tubular type mistake
When filter, the first shut-off valve and the second shut-off valve are all closed, and can will be rinsed the pressure in pipeline and are vented by blow-down pipe, then
Tubular filter is cleaned, pressure would not be had by rinsing in pipeline, cleaning more safe and convenient.
Claims (5)
1. a kind of mechanical face seals of centrifugal pumps flusher, including the flushing pipe (1) being connected on centrifugal pump, flushing pipe (1) into
Liquid end and the outlet end (2) of centrifugal pump connect, and the mechanical seal (3) of the outlet end and centrifugal pump of flushing pipe (1) connects, feature
It is: is connected with tubular filter (4), pressure gauge (5) and restricting orifice (6), the tubular filter on the flushing pipe (1)
(4) close to the outlet end (2) of centrifugal pump, mechanical seal (3) of the restricting orifice (6) close to centrifugal pump, the flushing pipe (1)
On be provided with the first shut-off valve (7) and the second shut-off valve (8), first shut-off valve (7) be located at the outlet end (2) of centrifugal pump with
Between tubular filter (4), second shut-off valve (8) is located between pressure gauge (5) and restricting orifice (6)；It further include suspension
The outlet end (2) of separator (9), described suspension separator (9) one end and centrifugal pump connects, the other end and flushing pipe (1) into
The connection of liquid end；The flushing pipe (1) includes supervisor (10), the first branch pipe (11) and the second branch pipe (12), close to going out for centrifugal pump
Be connected in turn on first branch pipe (11) of mouthful end (2) side the first shut-off valve (7), tubular filter (4), pressure gauge (5) and
Second shut-off valve (8)；The first shut-off valve is connected in turn on second branch pipe (12) of outlet end (2) side of centrifugal pump
(7), tubular filter (4), pressure gauge (5) and the second shut-off valve (8)；First branch pipe (11) and the second branch pipe (12) are simultaneously arranged
It sets, the restricting orifice (6) is two, and a restricting orifice (6) is arranged on the first branch pipe (11), another restricting orifice
(6) it is arranged on the second branch pipe (12)；Heat tracing pipe (13), companion are provided on first branch pipe (11) and the second branch pipe (12)
The helically wound formula arrangement of heat pipe (13)；Cooling-part is provided on the supervisor (10), cooling-part includes water tank (14), disk
The bimetallic thermometer (16) managing (15) and being arranged on water tank (14), coil pipe (15) are arranged in the inner bottom wall of water tank (14),
Bimetallic thermometer (16) stretches to the inner bottom wall of water tank (14), and water tank (14) is connected to supervisor (10).
2. a kind of mechanical face seals of centrifugal pumps flusher according to claim 1, it is characterised in that: on the supervisor (10)
It is provided with Venturi tube (17), Venturi tube (17) is located between cooling-part and mechanical seal (3), and Venturi tube (17) is by receiving
Contracting section (18), cylindrical section (19) and expansion segment (20) are made of one piece, and contraction section (18) is connect by flange with supervisor (10),
Expansion segment (20) is connect with mechanical seal (3).
3. a kind of mechanical face seals of centrifugal pumps flusher according to claim 2, it is characterised in that: the expansion segment (20)
On be provided with shunting disk (21), shunting disk (21) and expansion segment (20) detachable connection, shunting disk are evenly distributed on (21)
More jet pipes (22).
4. a kind of mechanical face seals of centrifugal pumps flusher according to claim 1, it is characterised in that: first branch pipe
(11) it is connected with the first elbow (23), is connected on the second branch pipe (12) the second elbow (24) on, the first elbow (23) and second
Elbow (24) is arranged diagonal.
5. a kind of mechanical face seals of centrifugal pumps flusher according to claim 1, it is characterised in that: first branch pipe
(11) and on the second branch pipe (12) it is provided with blow-down pipe (25), blow-down pipe (25) is located at tubular filter (4) and pressure gauge (5)
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603735.2A CN106122108B (en) | 2016-07-28 | 2016-07-28 | A kind of mechanical face seals of centrifugal pumps flusher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610603735.2A CN106122108B (en) | 2016-07-28 | 2016-07-28 | A kind of mechanical face seals of centrifugal pumps flusher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106122108A CN106122108A (en) | 2016-11-16 |
| CN106122108B true CN106122108B (en) | 2019-05-10 |
Family
ID=57290470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610603735.2A Active CN106122108B (en) | 2016-07-28 | 2016-07-28 | A kind of mechanical face seals of centrifugal pumps flusher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106122108B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593930A (en) * | 2016-12-15 | 2017-04-26 | 上海工程技术大学 | Suspension type centrifugal pump |
| CN107390520B (en) * | 2017-06-27 | 2019-10-01 | 江苏大学镇江流体工程装备技术研究院 | A kind of fire fighting supply pumping station controlling system and its design method |
| CN107368048B (en) * | 2017-06-27 | 2020-07-03 | 江苏大学镇江流体工程装备技术研究院 | Design method of underground water supply pump station structure control system |
| CN110685920A (en) * | 2019-10-31 | 2020-01-14 | 上海佰诺泵阀有限公司 | Centrifugal pump for conveying medium containing particles |
| CN111420446A (en) * | 2020-04-14 | 2020-07-17 | 山东京博中聚新材料有限公司 | Colloidal particle pump with pipe network type colloidal particle water-tight seal flusher |
| CN111692123A (en) * | 2020-05-09 | 2020-09-22 | 青海盐湖工业股份有限公司 | Double-end-face mechanical sealing device for pump |
| CN112682358B (en) * | 2020-12-09 | 2022-04-08 | 江苏大学镇江流体工程装备技术研究院 | Safe and stable high-temperature-resistant hot water circulating pump system |
| CN113289968B (en) * | 2021-04-07 | 2022-04-12 | 岭东核电有限公司 | Spent fuel assembly treatment equipment and method |
| CN113623276A (en) * | 2021-09-07 | 2021-11-09 | 云南大红山管道有限公司 | Machine seal flushing water bearing cooling water supply system of centrifugal pump and control method |
| CN114483590B (en) * | 2022-01-28 | 2023-04-11 | 浙江水泵总厂有限公司 | Machine seals washes structure and has its airtight pipeline system of vacuum |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2290113B (en) * | 1994-05-31 | 1998-07-15 | Ingersoll Dresser Pump Co | Centrifugal pump |
| US7112033B1 (en) * | 2003-02-24 | 2006-09-26 | Wright Pumps, Inc. | Hygienic mechanical seal flushing system for pure liquids in sanitary centrifugal pumps |
| CN202001396U (en) * | 2011-03-21 | 2011-10-05 | 天津市聚能高压泵有限公司 | Flushing device of mechanical seal for high pressure pump |
| CN202673798U (en) * | 2012-06-26 | 2013-01-16 | 四川川工泵业有限公司 | Structure for self supplying cooling wash water for mechanical seal of sewage pump |
| CN103352855A (en) * | 2013-06-20 | 2013-10-16 | 江苏大学 | Novel hydrodynamic turbine pump free of shaft seal structure |
| CN203374533U (en) * | 2013-08-01 | 2014-01-01 | 陕西煤业化工集团(上海)胜帮化工技术有限公司 | Mechanical seal flushing device of centrifugal pump high-viscosity working medium |
| CN104791306B (en) * | 2014-10-15 | 2017-06-16 | 邢宇 | A kind of axle envelope auxiliary rinse-system of centrifugal pump and axial-flow pump |
| CN204436889U (en) * | 2014-11-28 | 2015-07-01 | 大连环友屏蔽泵有限公司 | Circulation pipe is with the canned motorpump of filter |
| CN104632723A (en) * | 2015-02-27 | 2015-05-20 | 新疆大全新能源有限公司 | Mechanical seal flushing device, mechanical seal flushing system and mechanical seal flushing method |
-
2016
- 2016-07-28 CN CN201610603735.2A patent/CN106122108B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106122108A (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106122108B (en) | A kind of mechanical face seals of centrifugal pumps flusher | |
| CN101307767A (en) | Single-phase pipeline shielding electric pump | |
| CN209761841U (en) | Leakage-free high-temperature high-pressure hot water pump | |
| CN202545269U (en) | Corrosion-resistant and wear-resistant plastic-lined self-priming pump | |
| CN109281872A (en) | A kind of mechanical face seals of centrifugal pumps flusher and its manufacturing process | |
| CN209164160U (en) | A kind of axial force balance structure of long-shaft pump | |
| CN101691871B (en) | Improvement on axial thrust balancing device of vertical multistage barrel pump | |
| CN109372758A (en) | Long-shaft pump under a kind of vertical solution | |
| CN206129615U (en) | Circulating water horizontal centrifugal pump | |
| CN206439198U (en) | A kind of low Pulp pump of flushing water pressure | |
| CN102410243B (en) | Particle-resistance structure for sealing turbid water pump | |
| CN103994077A (en) | Vertical type slime pump | |
| CN107725492A (en) | A kind of device for cleaning centrifugal pump | |
| CN208295127U (en) | It is a kind of can on-line maintenance mechanical seal rinsing system | |
| CN208397017U (en) | A kind of vertical pump mechanical seal rinsing device | |
| CN208442031U (en) | A kind of water pump | |
| CN208669621U (en) | A kind of air-conditioning duct pump | |
| CN113323880B (en) | Double-suction pump convenient to disassemble and inspect and low in vibration noise | |
| CN206377058U (en) | The water pump of rotor chamber internal and external pressure balance | |
| CN206159103U (en) | Abrasionproof centrifugal pump is inhaled to side | |
| CN205154763U (en) | Binary channels prevents blockking up mechanical seal rinse -system | |
| CN104728124A (en) | Multi-stage centrifugal pump | |
| CN108980052B (en) | Direct-connection vertical sewage pump | |
| CN215927791U (en) | Energy-efficient pre-pump that power plant unit was used | |
| CN213392723U (en) | Portable vertical pipeline centrifugal pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |