CN110152896A - A kind of decanter centrifuge feed pipe - Google Patents
A kind of decanter centrifuge feed pipe Download PDFInfo
- Publication number
- CN110152896A CN110152896A CN201910456580.8A CN201910456580A CN110152896A CN 110152896 A CN110152896 A CN 110152896A CN 201910456580 A CN201910456580 A CN 201910456580A CN 110152896 A CN110152896 A CN 110152896A
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- Prior art keywords
- cylindrical tube
- pipe
- thick
- thin
- jet
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- 239000000463 material Substances 0.000 claims abstract description 62
- 244000273618 Sphenoclea zeylanica Species 0.000 claims abstract description 27
- 239000000872 buffer Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 description 7
- 239000007790 solid phase Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
Abstract
A kind of decanter centrifuge feed pipe, including material to be separated expects pipe, flocculant buffer liquid pipe, push rod, bracket；The first jet of material to be separated expects pipe connects with thick cylindrical tube one end, and bend pipe one end connects with thick cylindrical tube side, and bend pipe inner cavity is connected with thick cylinder tube cavity；It includes second nozzle that flocculant, which buffers liquid pipe, thin cylindrical tube, and second nozzle is arranged in thick cylindrical tube, and thin cylindrical tube passes through capping and is arranged in thick cylindrical tube, forms annular channel between thin cylindrical tube and thick cylindrical tube；Pushing rod sleeve can be close to thin cylindrical tube in the intracavitary axial movement of thick cylindrical tube outside thin cylindrical tube, and rubber piston is arranged in annular channel；There is axial long and short limiting groove on hollow stem lateral surface, the axial long and short limiting groove of the spring, snap-lock on pedestal.The present invention improves the mixed effect of material and flocculant to be separated, prevents feed pipe from stopping state occur.
Description
Technical field
The invention belongs to centrifuge fields, and in particular to a kind of decanter centrifuge feed pipe.
Background technique
The physical properties such as granular size, concentration of solid phase particles object are separated by solid-liquid separation energy to decanter centrifuge in material to be separated
Power has great influence, properly increases the granular size of solid phase particles object in material to be separated, changes material concentration to be separated, can
To improve the separative efficiency of decanter centrifuge.Therefore, material to be separated needs before being centrifuged into decanter centrifuge
It is pre-processed, and pretreated main method is to add flocculant into material to be separated, is made in material to be separated
Grain object flocculation conglomeration, increases the volume of particulate matter, to improve the separative efficiency of decanter centrifuge.
Traditionally, material to be separated directly imports feed pipe by tee tube with flocculant, in feed pipe and material dispensing
It is centrifuged after the mixed flocculation of room into rotary drum.The hybrid mode does not ensure that being sufficiently mixed for solid-liquid two-phase, causes
The mixing of flocculant and material to be separated is uneven, and solid phase particles conglomeration effect is poor, and certain wave is also caused to the dosage of flocculant
Take, improve separation costs, reduces the separative efficiency of centrifuge；On the other hand, since there are certain resistance damages for feed pipe
Lose, after longtime running, material to be separated can deposit decanter centrifuge on feed pipe inner wall, may be blocked when serious into
Expects pipe influences the normal operation of decanter centrifuge.
Therefore, it is the mixed effect for improving flocculant and material to be separated, prevents feed pipe from stopping state occur, is promoted sleeping
The separative efficiency of screw centrifuge, reduce separation costs, just must the structure to decanter centrifuge carry out certain improvement.
Summary of the invention
In order to which the mixed effect for solving material and flocculant to be separated in traditional decanter centrifuge is poor, feed pipe is susceptible to plugging
Problem, the present invention provide a kind of decanter centrifuge feed pipe.
The technical solution adopted by the present invention is that:
Feed pipe axis for decanter centrifuge of the invention is overlapped with 6 axis of screw feeder, the feed pipe packet
Material to be separated expects pipe 1 is included, flocculant buffers liquid pipe 2, push rod 3, bracket 4；
The material to be separated expects pipe 1 includes first jet 11, thick cylindrical tube 12, capping 13, bend pipe 14, flange 15；
The first jet 11 includes thin straight pipe 111, taper pipeline section 112 and thick straight pipe 113, the taper pipeline section
112 connect the thin straight pipe 111 and the thick straight pipe 113, and the thin straight pipe 111 outlet is placed in material dispensing room 5
It is interior；The first jet 11 is connected by screw thread with described thick 12 one end of cylindrical tube, and the capping 13 is threadedly secured to institute
The other end of thick cylindrical tube 12 is stated, the bend pipe 14 is close to 13 setting of capping, described 14 one end of bend pipe and the thick cylinder
12 side of pipe connects, and 14 inner cavity of the bend pipe is connected with thick 12 inner cavity of cylindrical tube, and 14 inlet face central axis of bend pipe
With thick 12 central axis of cylindrical tube, 14 exit face central axis of bend pipe and the thick 12 center overlapping of axles of cylindrical tube are described
Flange 15 is fixed on 14 other end of bend pipe.
The flocculant buffering liquid pipe 2 includes second nozzle 21, thin cylindrical tube 22；
The second nozzle 21 includes thin mouth straight pipe 211, taper pipeline section 212 and thick mouth straight pipe 213, second spray
Mouth 21 is arranged in the thick cylindrical tube 12, the taper pipeline section of 21 pelvic outlet plane of second nozzle and the first jet 11
112 big transverse planes are overlapped, and the second nozzle 21 is connected by screw thread with described thin 22 one end of cylindrical tube, the thin cylindrical tube 22
Be arranged in the thick cylindrical tube 12 across the capping 13, and the second nozzle 21, the thin cylindrical tube 22 with it is described thick
Cylindrical tube 12 is coaxially set, and forms annular channel between the thin cylindrical tube 22 and the thick cylindrical tube 12.
The push rod 3 includes rubber piston 31, hollow stem 32, annular hand grip 33；
The push rod 3 is sleeved on outside the thin cylindrical tube 22, and can be close to the thin cylindrical tube 22 in the thick cylindrical tube
12 intracavitary axial movements, the rubber piston 31, which is arranged between the thin cylindrical tube 22 and the thick cylindrical tube 12, forms annular
In runner, the rubber piston 31 includes rotary table section 311 and cylindrical section 312, has a cylindrical cavity in the rubber piston 31,
Cylindrical empty cavity axis is overlapped with the rubber piston 31, and 31 both ends of the surface of the rubber piston are connected by cylindrical cavity
It is logical；The cylindrical section 312 is equipped with annular groove, and described 32 one end of hollow stem passes through annular groove and 31 phase of rubber piston
Connection, 32 center of hollow stem is through the capping 13；The annular hand grip 33 is fixed on 32 other end of hollow stem
Side, and 33 central axis of the annular hand grip is overlapped with the hollow stem 32.
The bracket 4 includes pedestal 41, strut 42, spring 43, buckle 44；
The pedestal 41 is used for the fixation of bracket 4, and 42 big end of strut is fixed on the pedestal 41, the strut 42
Small end has a through-hole, and the hollow stem 32 passes through the through-hole, sets that there are two circles on the through-hole annular inner wall in horizontal direction
Cylindrical groove is placed with spring 43 in each groove, and cylindrical buckle 44 is placed on the spring 43.
Three rubber rings 313 are evenly distributed with along axial direction on the 31 rotary table section side of rubber piston；Outside the hollow stem 32
There is the long limiting groove m of 2 axial directions on side, the short limiting groove n of 2 axial directions, the groove section is triangular in shape, and described 4
Circumferentially staggered length limiting groove is in 90 ° of arrangements；It is inclined-plane, the inclined-plane and the limit that the cylindrical buckle 44, which has one end bottom surface,
Position groove outer inclined-plane cooperation；The short limiting groove n limitation push rod 3 is in L1Axial movement in stroke, the long limiting groove m limit
Push rod processed 3 is in L2Axial movement in stroke；L1Stroke is the position that contacts with rubber piston of capping to rubber piston rotary table section big end
Plane and bend pipe inlet wall face neat position；L2Stroke covers the position to rubber piston rotary table section side contacted with rubber piston
The position that face is overlapped with first jet taper pipeline section side.
The 112 conical inclination α of taper pipeline section of the first jet 11 is 80 °, the outer diameter D of thin straight pipe 1111=34mm,
The outer diameter D of thick straight pipe 1132=64mm；The distance of capping 13 to bend pipe 14 is L1=200mm in the material to be separated expects pipe 1
~250mm.
Annular is evenly equipped with several axial air equalizer opening o in the capping 13.
Thin 211 outer diameter of mouth straight pipe of the second nozzle 21 is d1=8mm, and annular is evenly equipped with 6~10 on side
The radial first jet hole a that aperture is 1mm；The 212 big end outer diameter of taper pipeline section is d2=16mm, conical inclination β be 30 °~
80 °, there are several the second jet hole b for enclosing axial disposed at equal distance on 212 side of taper pipeline section, every circle includes uniformly distributed 6
The second jet hole b of~10 1mm, and the second jet hole b axis is perpendicular to 212 side of taper pipeline section；It is described thick
Mouth 213 outside diameter d of straight pipe3=29mm, and in axial direction annular is evenly equipped with the axial third jet stream that 6~10 apertures are 2mm
Hole c；Before the second nozzle 21 at x=10mm, annular is evenly equipped with 6~10 apertures and is on thin 22 side of cylindrical tube
The radial 4th jet hole d of 2mm, and 22 outside diameter d of thin cylindrical tube4=30mm.
The circle number k value solution procedure of second jet hole b is as follows:
Known d1、d2With it is each circle the second jet hole b group along tapered slope spacing be 3.5mm, can be found out according to Pythagorean theorem
The 212 side bus length of taper pipeline section:
Formula (1) is substituted into?Wherein [] is to be rounded symbol.
The course of work of the invention is as follows:
(1) buffer with flocculant flows into flocculant buffering liquid pipe 2, flows to second nozzle 21, and first strand first slow
Fliud flushing enter second nozzle 21 before, radially flowed out from the 4th jet hole d, with the material to be separated in material to be separated expects pipe 1 into
Row is pre-mixed for the first time, and second strand of buffer forms annular low pressure area from third jet hole c-axis to injection, by premixing
Material realized second of flocculant and solid-phase material and mixed that third stock buffer is by second at this time after volume inspiration low-pressure area
Jet hole b injects annular low pressure area at a certain angle, realizes that third time mixes with pre-mixed material, the 4th strand of buffer is by first
Jet hole a is radially projected, and carries out the 4th mixing to material to be separated around, and the impact of the 4th strand of buffer can slow down week
The axial velocity of material to be separated is enclosed, the incorporation time of buffer and material to be separated is extended, improves mixed effect, it is final to buffer
Liquid mainstream is projected by thin 211 axial high speed of mouth straight pipe, injection pass through four times mixing solid-liquid two-phase flows, finally, by with wadding
The material to be separated of solidifying agent premixing is flowed into material dispensing room 5 by first jet 11.
(2) in decanter centrifuge operational process, as shown in figure 14, buckle 44 and short limiting groove n cooperates, and realizes push rod
3 in L1(i.e. 1. rubber piston 31 can arrive between 2. position in initial position) freely moves axially (as shown in Figure 2,3) in stroke,
At this time to push rod 3 carry out push-and-pull operation the mobility of material to be separated can be improved can in the lower situation of material moisture
Occur to avoid the case where charging blockage, improves the adaptability that feed pipe treats separation of material granule density.
(3) when decanter centrifuge is out of service, material to be separated stops entering from bend pipe 14 at this time, as shown in figure 14,
Hollow stem 32 is rotated by 90 ° counterclockwise, the compressed spring 43 first of buckle 44, buckle 44 is detached from short limiting groove n, hollow stem rotation
When turning 90 °, buckle 44 is under the pretightning force effect of spring 43, again with long limiting groove m cooperation, it can be achieved that push rod 3 is in L2Row
(i.e. 1. rubber piston 31 can arrive between 3. position in initial position) freely moves axially (as shown in Figure 2,4) in journey, pushes away at this time
Dynamic push rod 3 to 3. position can strike off the material of charging inside pipe wall deposition shown in Fig. 4, thus prevention because solid phase particles into
Expects pipe inner wall accumulation caused by block, after push rod 3 can be replaced in 1. position shown in Fig. 2.
The beneficial effects of the present invention are embodied in: the mixed effect of material and flocculant to be separated is improved, prevents feed pipe from going out
Existing stopping state, promotes the separative efficiency of decanter centrifuge, reduces separation costs.
Detailed description of the invention
Fig. 1 is decanter centrifuge cross-sectional view in an embodiment；
Fig. 1 a is P in Fig. 11The partial enlarged view in portion；
Fig. 2 is feed pipe cross-sectional view in an embodiment (1. push rod is in initial position)；
Fig. 3 is feed pipe break-away cross-sectional view in an embodiment (push rod is in 2. position)；
Fig. 4 is feed pipe break-away cross-sectional view in an embodiment (push rod is in 3. position)；
Fig. 5 is the structural schematic diagram of the material to be separated expects pipe of feed pipe in an embodiment；
Fig. 6 is the break-away cross-sectional view of the material to be separated expects pipe of feed pipe in an embodiment；
Fig. 7 is the structural schematic diagram of the capping of feed pipe in an embodiment；
Fig. 8 is the structural schematic diagram of the flocculant buffering liquid pipe of feed pipe in an embodiment；
Fig. 9 is the axial view that Fig. 8 is seen along the direction A；
Figure 10 is the axial rift cross-sectional view of the flocculant buffering liquid pipe in an embodiment；
Figure 11 is the cooperation schematic diagram of push rod and bracket in an embodiment；
Figure 12 is the break-away cross-sectional view of push rod in an embodiment；
Figure 13 is support schematic diagram in an embodiment；
Figure 14 is the partial sectional view of bracket and hollow stem cooperation in an embodiment
Description of symbols: 1- material to be separated expects pipe, 11- first jet, the thin straight pipe of 111-, 112- taper pipeline section,
The thick straight pipe of 113-, the thick cylindrical tube of 12-, 13- capping, 14- bend pipe, 15- flange, 2- flocculant buffer liquid pipe, and 21- second sprays
Mouth, the thin mouth straight pipe of 211-, 212- taper pipeline section, the thick mouth straight pipe of 213-, the thin cylindrical tube of 22-, 3- push rod, 31- rubber piston,
311- rotary table section, 312- cylindrical section, 313- rubber ring, 32- hollow stem, 33- annular hand grip, 4- bracket, 41- pedestal, 42- branch
Bar, 43- spring, 44- buckle, 5- material dispensing room, 6- screw feeder, 7- rotary drum, 1.-indicate that capping is contacted with rubber piston
Position, 2.-indicate that the big transverse plane of rubber piston rotary table section and bend pipe inlet wall face neat position, 3.-indicate rubber piston
The position that rotary table section side is overlapped with first jet taper pipeline section side, o- air equalizer opening, α -112 conical surface of taper pipeline section incline
Angle, β -212 conical inclination of taper pipeline section, the first jet hole of a-, the second jet hole of b-, c- third jet hole, the 4th jet hole of d-,
M- long limiting groove, the short limiting groove of n-, L1Short limiting groove axial length, L2Long limiting groove axial length, D1It is thin straight
The outer diameter of pipeline section 111, D2The outer diameter of thick straight pipe 113, d1The outer diameter of thin mouth straight pipe 211, d2Outside 212 big end of taper pipeline section
Diameter, d3The outer diameter of thick mouth straight pipe 213, d4The outer diameter of thin cylindrical tube 22, the axial direction of the 4th jet hole of x- to second nozzle away from
From 212 side bus length of y- taper pipeline section.
Specific embodiment
Technical solution of the present invention and advantage to show ... in more detail will be carried out now by some relevant examples
Description.By combining corresponding picture and example, the purpose in the present invention is illustrated.It should be appreciated that described herein
Specific embodiment is only used to explain the present invention, is not to carry out any restrictions to the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Referring to attached drawing 1-14
It is as shown in Figure 1 decanter centrifuge cross-sectional view in an embodiment, feed pipe axis and 6 axis weight of screw feeder
It closes, the feed pipe includes material to be separated expects pipe 1, and flocculant buffers liquid pipe 2, push rod 3, bracket 4；
As shown in Fig. 1 a, Fig. 2, Fig. 3, Fig. 5, Fig. 6, material to be separated expects pipe 1 includes first jet 11, thick cylindrical tube 12, envelope
Lid 13, bend pipe 14, flange 15；The first jet 11 includes thin straight pipe 111, taper pipeline section 112 and thick straight pipe 113, institute
It states taper pipeline section 112 and connects the thin straight pipe 111 and the thick straight pipe 113, and the thin straight pipe 111 outlet is placed in object
Expect 5 in dispensing room；The first jet 11 is connected by screw thread with described thick 12 one end of cylindrical tube, and the capping 13 passes through screw thread
It is fixed on the other end of the thick cylindrical tube 12, the bend pipe 14 is close to 13 setting of capping, described 14 one end of bend pipe and institute
It states thick 12 side of cylindrical tube to connect, and 14 inner cavity of the bend pipe is connected with thick 12 inner cavity of cylindrical tube, and 14 import of bend pipe
Face central axis and thick 12 central axis of cylindrical tube, 14 exit face central axis of bend pipe and the thick 12 central axis weight of cylindrical tube
It closes, the flange 15 is fixed on 14 other end of bend pipe；The 112 conical inclination α of taper pipeline section of the first jet 11 is
80 °, the outer diameter D of thin straight pipe 1111=34mm, the outer diameter D of thick straight pipe 1132=64mm；It is sealed in the material to be separated expects pipe 1
The distance of lid 13 to bend pipe 14 is L1=200mm~250mm.
As shown in fig. 7, annular is evenly equipped with several axial air equalizer opening o in capping 13.
As shown in Fig. 1 a, Fig. 8, Fig. 9, Figure 10, it includes second nozzle 21, thin cylindrical tube 22 that flocculant, which buffers liquid pipe 2,；It is described
Thin 211 outer diameter of mouth straight pipe of second nozzle 21 is d1=8mm, and annular is evenly equipped with the radial direction that 10 apertures are 1mm on side
First jet hole a；The 212 big end outer diameter of taper pipeline section is d2=16mm, conical inclination β are 75 °, the taper pipeline section 212
There is k=3 to enclose the second jet hole b group of axial disposed at equal distance on side, every circle includes the second jet hole b of 10 1mm, every circle
Second jet hole b circumferential direction is uniformly distributed, and the second jet hole b axis is perpendicular to 212 side of taper pipeline section；The thick mouth is straight
213 outside diameter d of pipeline section3=29mm, and in axial direction annular is evenly equipped with the axial third jet hole c that 10 apertures are 2mm；Institute
It states before second nozzle 21 at x=10mm, annular is evenly equipped with the radial 4th that 10 apertures are 2mm on thin 22 side of cylindrical tube
Jet hole d, and 22 outside diameter d of thin cylindrical tube4=30mm；The second nozzle 21 includes thin mouth straight pipe 211, taper pipeline section
212 and thick mouth straight pipe 213, the second nozzle 21 is arranged in the thick cylindrical tube 12, and the outlet of second nozzle 21 is flat
Face is overlapped with the big transverse plane of taper pipeline section 112 of the first jet 11, and the second nozzle 21 passes through screw thread and the thin circle
22 one end of column tube connects, and the thin cylindrical tube 22 passes through the capping 13 and is arranged in the thick cylindrical tube 12, and described second
Nozzle 21, the thin cylindrical tube 22 and the thick cylindrical tube 12 are coaxially set, the thin cylindrical tube 22 and the thick cylindrical tube
Annular channel is formed between 12.
As shown in Fig. 2, Figure 11, Figure 12, push rod 3 includes rubber piston 31, hollow stem 32, annular hand grip 33；The push rod 3
It is sleeved on outside the thin cylindrical tube 22, and the thin cylindrical tube 22 can be close in the intracavitary axial movement of the thick cylindrical tube 12, institute
It states rubber piston 31 to be arranged between the thin cylindrical tube 22 and the thick cylindrical tube 12 in formation annular channel, the rubber is living
Plug 31 includes rotary table section 311 and cylindrical section 312, there is a cylindrical cavity in the rubber piston 31, cylindrical empty cavity axis with
The rubber piston 31 is overlapped, and 31 both ends of the surface of the rubber piston are connected by cylindrical cavity；On the cylindrical section 312
Equipped with annular groove, described 32 one end of hollow stem is connected by annular groove with the rubber piston 31, the hollow stem 32
Center is through the capping 13；The annular hand grip 33 is fixed on the side of 32 other end of hollow stem, and the annular hand
33 central axis of handle is overlapped with the hollow stem 32；31 material of rubber piston is industrial rubber, 31 rotary table of rubber piston
Three rubber rings 313 are evenly distributed with along axial direction on section side, 32 material of hollow stem is aluminium alloy.
As shown in figure 14, there are the long limiting groove m of 2 axial directions, 2 short limiting grooves of axial direction on 32 lateral surface of hollow stem
N, the groove section is triangular in shape, and it is in 90 ° of arrangements that 4 length limiting grooves are circumferentially staggered, as shown in figure 3, described
Short limiting groove n limitation push rod 3 is in L1Axial movement in stroke, as shown in figure 4, the long limiting groove m limitation push rod 3 is in L2
Axial movement in stroke.
As shown in Figure 13,14, bracket 4 includes pedestal 41, strut 42, spring 43, buckle 44；The pedestal 41 is used for bracket
4 fixation, 42 big end of strut are fixed on the pedestal 41, and 42 small end of strut has a through-hole, the hollow stem 32
It across the through-hole, is set in horizontal direction there are two cylinder shape groove on the through-hole annular inner wall, each groove is interior to be placed
There is spring 43, cylindrical buckle 44 is placed on the spring 43；It is inclined-plane that the cylindrical buckle 44, which has one end bottom surface, is such as schemed
Shown in 14, the inclined-plane and the limiting groove outer inclined-plane cooperate.
The working principle of the present embodiment is described below:
Buffer with flocculant flows into flocculant buffering liquid pipe 2, flows to second nozzle 21, first first strand of buffer
It before entering second nozzle 21, is radially flowed out from the 4th jet hole d, carries out the with the material to be separated in material to be separated expects pipe 1
Primary premixing, second strand of buffer forms annular low pressure area from third jet hole c-axis to injection, by the object of premixing
Material is realized flocculant and is mixed for second of solid-phase material that third stock buffer is by the second jet stream at this time after volume inspiration low-pressure area
Hole b injects annular low pressure area at a certain angle, realizes that third time mixes with pre-mixed material, the 4th strand of buffer is by the first jet stream
Hole a radially project, to material to be separated around carry out the 4th time mixing, and the impact of the 4th strand of buffer can slow down around to
The axial velocity of separation of material extends the incorporation time of buffer and material to be separated, improves mixed effect, final buffer master
Stream is projected by thin 211 axial high speed of mouth straight pipe, and injection passes through the solid-liquid two-phase flow of four mixing, finally, process and flocculant
The material to be separated of premixing is flowed into material dispensing room 5 by first jet 11；
In decanter centrifuge operational process, as shown in figure 14, buckle 44 and short limiting groove n cooperates, and realizes that push rod 3 exists
L1(i.e. 1. rubber piston 31 can arrive between 2. position in initial position) freely moves axially (as shown in Figure 2,3) in stroke, this
When push-and-pull operation is carried out to push rod 3 mobility of material to be separated can be improved, can be in the lower situation of material moisture
The case where avoiding charging blockage generation, improves the adaptability that feed pipe treats separation of material granule density；
When decanter centrifuge is out of service, material to be separated stops entering from bend pipe 14 at this time, as shown in figure 14, will be empty
Core bar 32 is rotated by 90 ° counterclockwise, and the compressed spring 43 first of buckle 44, buckle 44 is detached from short limiting groove n, and hollow stem is rotated by 90 °
When, buckle 44 is under the pretightning force effect of spring 43, again with long limiting groove m cooperation, it can be achieved that push rod 3 is in L2In stroke
(i.e. 1. rubber piston 31 can arrive between 3. position in initial position) freely moves axially (as shown in Figure 2,4), pushes away at this time
Bar 3 is to 3. position can strike off the material of charging inside pipe wall deposition shown in Fig. 4, so that prevention is because solid phase particles are in feed pipe
Inner wall accumulation caused by block, after push rod 3 can be replaced in 1. position shown in Fig. 2.
Claims (5)
1. a kind of decanter centrifuge feed pipe, it is characterised in that: including material to be separated expects pipe (1), flocculant buffers liquid pipe
(2), push rod (3), bracket (4)；
The material to be separated expects pipe (1) includes first jet (11), thick cylindrical tube (12), is covered (13), bend pipe (14), flange
(15)；
The first jet (11) includes thin straight pipe (111), taper pipeline section (112) and thick straight pipe (113), the conical pipe
Section (112) connects the thin straight pipe (111) and the thick straight pipe (113), and the thin straight pipe (111) outlet is placed in object
Expect in dispensing room (5)；The first jet (11) is connected by screw thread with described thick cylindrical tube (12) one end, the capping (13)
It is threadedly secured to the other end of the thick cylindrical tube (12), the bend pipe (14) is arranged close to the capping (13), described
Bend pipe (14) one end connects with thick cylindrical tube (12) side, and in the bend pipe (14) inner cavity and the thick cylindrical tube (12)
Chamber is connected, and bend pipe (14) inlet face central axis and thick cylindrical tube (12) central axis, in bend pipe (14) exit face
Mandrel and thick cylindrical tube (12) the center overlapping of axles, the flange (15) are fixed on the bend pipe (14) other end.
Flocculant buffering liquid pipe (2) includes second nozzle (21), thin cylindrical tube (22)；
The second nozzle (21) includes thin mouth straight pipe (211), taper pipeline section (212) and thick mouth straight pipe (213), and described
Two nozzles (21) setting is in the thick cylindrical tube (12), second nozzle (21) pelvic outlet plane and the first jet (11)
The big transverse plane of taper pipeline section (112) be overlapped, the second nozzle (21) passes through screw thread and thin cylindrical tube (22) one end phase
It connects, the thin cylindrical tube (22) passes through the capping (13) and is arranged in the thick cylindrical tube (12), and the second nozzle
(21), the thin cylindrical tube (22) is coaxially set with the thick cylindrical tube (12), the thin cylindrical tube (22) and the thick circle
Column tube forms annular channel between (12).
The push rod (3) includes rubber piston (31), hollow stem (32), annular hand grip (33)；
The push rod (3) is sleeved on the thin cylindrical tube (22) outside, and can be close to the thin cylindrical tube (22) in the thick cylinder
Manage (12) intracavitary axial movement, the rubber piston (31) setting the thin cylindrical tube (22) and the thick cylindrical tube (12) it
Between formed annular channel in, the rubber piston (31) includes rotary table section (311) and cylindrical section (312), the rubber piston
(31) there is a cylindrical cavity in, cylindrical empty cavity axis is overlapped with the rubber piston (31), and the rubber piston (31)
Both ends of the surface are connected by cylindrical cavity；The cylindrical section (312) is equipped with annular groove, and described hollow stem (32) one end is logical
It crosses annular groove to be connected with the rubber piston (31), the capping (13) is run through at hollow stem (32) center；The ring
Shape handle (33) is fixed on the side of the hollow stem (32) other end, and the annular hand grip (33) central axis with it is described hollow
Bar (32) is overlapped.
The bracket (4) includes pedestal (41), strut (42), spring (43), buckle (44)；
The pedestal (41) is used for the fixation of bracket (4), and strut (42) big end is fixed on the pedestal (41), the branch
Bar (42) small end has a through-hole, and the hollow stem (32) passes through the through-hole, sets in horizontal direction on the through-hole annular inner wall
There are two cylinder shape groove, it is placed with spring (43) in each groove, is placed with cylindrical buckle on the spring (43)
(44)；
Three rubber rings (313) are evenly distributed with along axial direction on rubber piston (31) the rotary table section side；The hollow stem (32)
There are 2 long limiting grooves (m) of axial direction on lateral surface, 2 short limiting grooves (n) of axial direction, the groove section is triangular in shape, and institute
It is in 90 ° of arrangements that it is circumferentially staggered, which to state 4 length limiting grooves,；It is inclined-plane, the inclined-plane that the cylindrical buckle (44), which has one end bottom surface,
Cooperate with the limiting groove outer inclined-plane；Short limiting groove (n) limitation push rod (3) moves axially in L1 stroke, described
Long limiting groove (m) limitation push rod (3) moves axially in L2 stroke；L1 stroke is that the position that capping is contacted with rubber piston is arrived
The big transverse plane of rubber piston rotary table section and bend pipe inlet wall face neat position；L2Stroke covers the position contacted with rubber piston
The position being overlapped to rubber piston rotary table section side with first jet taper pipeline section side.
2. a kind of decanter centrifuge feed pipe as described in claim 1, it is characterised in that: the cone of the first jet (11)
Shape pipeline section (112) conical inclination α is 80 °, the outer diameter D of thin straight pipe (111)1=34mm, the outer diameter D 2=of thick straight pipe (113)
64mm；The distance that (13) to bend pipe (14) are covered on the material to be separated expects pipe (1) is L1=200mm~250mm.
3. a kind of decanter centrifuge feed pipe as described in claim 1, it is characterised in that: annular is equal on the capping (13)
It is furnished with several axial air equalizer openings (o).
4. a kind of decanter centrifuge feed pipe as described in claim 1, it is characterised in that: the second nozzle (21) it is thin
Mouth straight pipe (211) outer diameter is d1=8mm, and annular is evenly equipped with radial first jet hole that 6~10 apertures are 1mm on side
(a)；Taper pipeline section (212) the big end outer diameter is d2=16mm, and conical inclination β is 30 °~80 °, the taper pipeline section (212)
There are several the second jet holes (b) for enclosing axial disposed at equal distance on side, every circle includes the second jet hole of 6~10 1mm
(b), the second jet hole (b) of every circle is circumferential uniformly distributed, and the second jet hole (b) axis is perpendicular to the taper pipeline section (212)
Side；Thick mouth straight pipe (213) the outside diameter d 3=29mm, and it is 2mm's that in axial direction annular, which is evenly equipped with 6~10 apertures,
Axial third jet hole (c)；Before the second nozzle (21) at x=10mm, annular is equal on thin cylindrical tube (22) side
It is furnished with radial 4th jet hole (d) that 6~10 apertures are 2mm, and the thin cylindrical tube (22) outside diameter d 4=30mm.
5. a kind of decanter centrifuge feed pipe as described in claim 1, it is characterised in that: the circle number k of the second jet hole (b)
It is as follows to be worth solution procedure:
Known d1, d2 and respectively the second jet hole (b) group of circle are 3.5mm along the spacing of tapered slope, can be found out according to Pythagorean theorem
Taper pipeline section (212) side bus length:
Formula (1) is substituted into?
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| CN201910456580.8A CN110152896A (en) | 2019-05-29 | 2019-05-29 | A kind of decanter centrifuge feed pipe |
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| CN201910456580.8A CN110152896A (en) | 2019-05-29 | 2019-05-29 | A kind of decanter centrifuge feed pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683621A (en) * | 2019-10-14 | 2020-01-14 | 浙江工业大学 | Flocculating agent inlet pipe for horizontal screw centrifuge |
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| GB1403096A (en) * | 1971-10-23 | 1975-08-13 | Kloeckner Humboldt Deutz Ag | Solid-jacket centrifuge with a slurry accelerator body |
| EP0176943A2 (en) * | 1984-10-03 | 1986-04-09 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Method and device for draining sludge |
| CN102274804A (en) * | 2011-08-30 | 2011-12-14 | 上海市离心机械研究所有限公司 | Improvement structure of feed distributor for horizontal spiral centrifugal machine |
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| CN206240648U (en) * | 2016-11-30 | 2017-06-13 | 济南汇川硅溶胶厂 | A kind of horizontal type screw settling centrifuge |
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| KR20180081315A (en) * | 2017-01-06 | 2018-07-16 | 이세호 | Water-Jet Type Centrifuge by Hydraulic Motor |
| CN210614045U (en) * | 2019-05-29 | 2020-05-26 | 浙江工业大学 | Feed pipe for horizontal screw centrifuge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1403096A (en) * | 1971-10-23 | 1975-08-13 | Kloeckner Humboldt Deutz Ag | Solid-jacket centrifuge with a slurry accelerator body |
| DE2165508A1 (en) * | 1971-12-30 | 1973-07-05 | Kloeckner Humboldt Deutz Ag | CENTRIFUGE FOR THE CONTINUOUS SEPARATION OF SOLID-LIQUID MIXTURES |
| EP0176943A2 (en) * | 1984-10-03 | 1986-04-09 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Method and device for draining sludge |
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| KR20180081315A (en) * | 2017-01-06 | 2018-07-16 | 이세호 | Water-Jet Type Centrifuge by Hydraulic Motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683621A (en) * | 2019-10-14 | 2020-01-14 | 浙江工业大学 | Flocculating agent inlet pipe for horizontal screw centrifuge |
| CN110683621B (en) * | 2019-10-14 | 2024-04-16 | 浙江工业大学 | Flocculant feed pipe for horizontal decanter centrifuge |
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