CN111821897B - High-concentration two-stage horizontal mixer - Google Patents

Abstract

The invention discloses a high-concentration two-stage horizontal stirrer which comprises a horizontally arranged first-stage stirrer and a horizontally arranged second-stage stirrer, wherein the first-stage stirrer comprises a first-stage casing and a paddle type stirring wheel arranged in the first-stage casing, a feeding hole is formed in one end of the upper surface of the first-stage casing, a first-stage discharging hole is formed in the other end of the lower part of the first-stage casing, the second-stage stirrer comprises a second-stage casing, a second-stage feeding hole is formed in one end of the upper part of the second-stage casing, the second-stage feeding hole is located under the first-stage discharging hole, a second-stage discharging hole is formed in one end, far away from the first-stage stirrer, of the lower part of the second-stage casing, a stirring shaft is arranged in the second-stage casing, double-helix blades are arranged on the stirring shaft, and each double-blade comprises an inner layer of blade and an outer layer of blade in opposite spiral directions. The two stirring shafts are horizontally arranged and are parallel to each other, and the double-helix blades on the two stirring shafts have the same helix direction and rotation movement direction.

Description

High-concentration two-stage horizontal mixer

Technical Field

The invention relates to the field of stirring machinery, in particular to a high-concentration two-stage horizontal stirrer.

Background

A stirring device is a component commonly used in the industry for mixing materials into a homogeneous mixture. A large amount of stirrers are required in mine filling projects, a high-concentration stirrer is an important part for manufacturing filling slurry, and the filling effect is directly influenced by the quality of the mixing effect.

In the prior art, the stirring effect of a stirring device is limited, and CN201520614563.X discloses a horizontal dust-removing stirrer which only has one stirring area, the primary mixing and the later-stage stirring of materials are carried out in the same area, and stirring blades cannot carry out targeted selection according to coarse stirring and fine stirring;

in addition, the horizontal mixer mostly uses the packing seal to carry out shaft end dynamic seal, and the packing seal is easy to wear away from the medium contact side, so that the maintenance is frequent.

Disclosure of Invention

The invention aims to provide an automatic treatment device for microbial solid waste, which aims to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a high concentration doublestage horizontal mixer, one-level mixer and second grade mixer including horizontal setting, wherein, one-level mixer includes the one-level casing and sets up the paddle formula stirring wheel inside the one-level casing, one end sets up the feed inlet on the one-level casing, the lower part other end of one-level casing sets up the one-level discharge gate, the second grade mixer includes the second grade casing, the one end on second grade casing upper portion sets up the second grade feed inlet, the second grade feed inlet is located the one-level discharge gate under, the one end that the one-level mixer was kept away from to second grade casing lower part sets up the second grade discharge gate, set up the (mixing) shaft in the second grade casing, set up double helix blade on the (mixing) shaft, double helix blade includes inside and outside two-layer opposite spiral direction's blade.

Mixer doublestage sets up, set up paddle formula stirring wheel in the first mixer, mainly used is with the material, the fluid carries out the primary mixing, make the broken mixture of material of block piece advance the fluid and become thick liquid, thick liquid flows into the second grade feed inlet at the one-level discharge gate, thick liquid carries out careful mixing in the second grade mixer, become even lotion and then flow toward subsequent position of use through the second grade discharge gate, the one-level has clear and definite division of labor with the second grade mixer, thick mixture and fine mixing divide step-by-step to go, obtain even thick liquid in the device export.

Furthermore, the number of the stirring shafts is two, the two stirring shafts are horizontally arranged and are parallel to each other, and the double-helix blades on the two stirring shafts have the same helix direction and the same rotation movement direction.

The slurry in the secondary shell is pushed by the double helix blade to flow, the helical directions of the inner layer blade and the outer layer blade on the two stirring shafts are the same, the outer ring is taken to rotate leftwards, the inner ring is taken to rotate rightwards, the fluid in the middle position of the outer layer blade moves upwards and downwards at the same time after rotating, the fluids in the two directions are mutually sheared at the symmetrical line, the shearing force is favorable for mixing the slurry, a plurality of symmetrical helical structures are arranged on the market, the fluids at the symmetrical line are mutually extruded and are only mixed in the flowing process, the double helix structure does not play a combined role, in the application, the same helical direction and the rotating direction have a shearing function at the intersection, part of the slurry does not flow through the intersection point of the connecting line of the symmetrical line and the stirring shaft, but is 'caught' by the other double helix blade and flows with the double helix blade after being pushed by the rotation of the double helix blade, the slurry in the part flows in a gourd shape between the two double helical blades and axially advances, the flow path is longer, and the mixing is more thorough.

Further, the mixer still includes spiral shaft seal, the position department that is passed by the (mixing) shaft on the second grade casing sets up wears the shaft hole, rotatory shaft seal includes the thread bush, the thread bush is established on the (mixing) shaft and is connected with the (mixing) shaft transmission, the thread bush is joined in marriage and is worn the shaft hole and realize that the axle head is sealed, the extrusion direction of thread bush outward appearance screw thread is towards the stirring region, the position department that passes the one-level casing at one-level mixer paddle formula stirring wheel rotation axis is provided with the spiral shaft seal with the interior looks isostructure of second grade mixer.

The screw thread that the rotation was played has the effect that promotes fluid towards one side motion in a narrow and small cylinder space, pass the position department of second grade casing at the (mixing) shaft, carry out axle head dynamic seal through the screw thread, the screw thread is the right-hand thread, the (mixing) shaft is anticlockwise rotation towards stirring regional from the motor, the alveolus of screw thread has an axial component towards the stirring region to the fluid medium's in the alveolus motive force, prevent that the thick liquids in the stirring region from flowing outside the second grade casing along the (mixing) shaft, the power of (mixing) shaft is directly taken to the motion power of spiral alveolus, dynamic seal is reliable, the setting is simple and convenient, compare in packing seal, do not have vulnerable part.

Further, the spiral shaft seal still includes crowded material ring sum reset spring, the apparent screw thread of thread bush has the breach, still is equipped with the annular on the through-hole inner wall, puts crowded material ring in the annular, crowded material ring inner circle sets up a radial inside protruding embedding screw thread alveolus towards the thread bush, crowded material ring is protruding width inwards less than the breach width, reset spring one end is supported tight annular lateral wall one end and is supported the terminal surface of tightly crowded material ring, reset spring will crowded material ring to keeping away from the regional one side of stirring.

If the screw thread groove only pushes the slurry towards the stirring area, the pushing force is small due to low rotating speed, and the slurry medium in the screw thread on the outer surface of the screw sleeve can rotate in situ and cannot be transferred to the stirring area where the double-spiral blade is located under the condition of small pushing force, so that the application further arranges the extruding ring on the inner wall of the shaft penetrating hole, the inner ring of the extruding ring is provided with a bulge towards the screw thread groove to be embedded into the screw thread groove, the bulge keeps the angle position in the circumferential direction and can be pushed by the side surface of the screw thread groove to move axially, after the screw sleeve rotates for one circle, the bulge is pushed to move axially for a lead distance and then falls back and resets at the corresponding notch position axially, the notch is internally provided with a reed choke with elasticity smaller than that of a reset spring, only the bulge is allowed to jack the notch under the action of the reset spring, and the bulge is closed when not in contact with the reed choke, prevent that thick liquids medium axial from passing through the breach, the medium that the screw thread alveolus cooperation arch pushed in the alveolus flows along the alveolus to guarantee that the thread bush must take place to the promotion of thick liquids medium is complete, guarantee that the axle head is sealed reliable, prevent to leak.

Furthermore, the notches are at least three, the three notches sequentially have a difference of one and one third of thread lead, the extrusion rings are also three, the extrusion rings are sequentially stacked in the axial direction, a reset spring is also arranged between every two adjacent extrusion rings, all the reset springs push all the extrusion rings to one side far away from a stirring area, the inner ring protrusion angle phase difference of the two extrusion rings far away from each other in the circumferential direction is equal to the protrusion angle phase of any one of the extrusion rings at the two sides.

The phase angles of the three gaps are different by 120 degrees, the projections on the shaft section are circumferentially and uniformly distributed, and a lead is added to correspond to 360 degrees, namely: the adjacent gaps are 480 degrees (one and one third of lead) in phase difference on the spiral angle, the three gaps respectively provide reset positions for the three protrusions, and the circumferential angles of the three protrusions are not equally divided on the circumference, so that the three protrusions do not pass through the gaps together to reset, and the three protrusions are successively reset at the reset time, so that at least one gap is blocked at each time, and at least one protrusion in the thread tooth groove is kept in the tooth groove to slide.

Furthermore, the double helical blade is composed of a plurality of single-lead helical blades formed by punching, and the double helical blade is fixed with the stirring shaft through a fastener. The punched spiral blade is accurate in size and shape, and is convenient to maintain and replace through connection of the fastening piece.

Compared with the prior art, the invention has the beneficial effects that: stirring and mixing are carried out hierarchically by a two-stage stirrer, a paddle type stirring wheel is used for crushing and primarily mixing materials, fine and uniform mixing is carried out by double helical blades, the double helical blades rotate in the same direction, slurry is pushed by the double helical blades to flow, shearing action is continuously carried out, the shearing action is carried out on the inner layer and the outer layer of a single double helical blade and the symmetrical lines of the two double helical blades, the mixing is uniform, most of the slurry pushed by the outer layer helical blades flows between the two double helical blades, the flow path is lengthened, and the mixing is thorough; the shaft end of the thread sleeve is sealed, a good dynamic sealing effect is still achieved under the low-speed occasion, the protrusions are embedded into the thread tooth sockets and slide along the tooth sockets, the auxiliary tooth sockets form a semi-closed space facing a stirring area, and the protrusions are pushed and extruded through the springs to penetrate through the notches to automatically reset in the tooth sockets.

Drawings

In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the two-stage mixer of the present invention;

FIG. 3 is a view showing the axial section of the stirring shaft according to the present invention

FIG. 4 is a schematic view of the spiral shaft seal according to the present invention;

FIG. 5 is a schematic view of the extrusion ring and the protrusion embedded in the threaded sleeve according to the present invention;

FIG. 6 is a first expanded view of a thread groove in the outer cylindrical surface of the thread insert of the present invention;

FIG. 7 is a second expanded view of the thread groove of the outer cylindrical surface of the thread bushing of the present invention;

FIG. 8 is a third expanded view of the thread groove of the outer cylindrical surface of the thread sleeve of the present invention.

In the figure: 1-first-stage stirrer, 11-first-stage machine shell, 12-first-stage feeding hole, 13-first-stage discharging hole, 2-second-stage stirrer, 21-second-stage machine shell, 211-through shaft hole, 22-second-stage feeding hole, 23-second-stage discharging hole, 24-stirring shaft, 25-double helical blade, 3-helical shaft seal, 31-threaded sleeve, 311-notch, 32-extrusion ring, 321-protrusion and 33-reset spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, a high concentration double-stage horizontal mixer, including the one-level mixer 1 and the second-stage mixer 2 of horizontal setting, wherein, the one-level mixer 1 includes one-level casing 11 and sets up the paddle formula stirring wheel in one-level casing 11 inside, one-level casing 11 goes up one end and sets up feed inlet 12, the lower part other end of one-level casing 11 sets up one-level discharge gate 13, second-stage mixer 2 includes second-stage casing 21, the one end on second-stage casing 21 upper portion sets up second grade feed inlet 22, second grade feed inlet 22 is located one-level discharge gate 13 under, the one end that one-level mixer 1 was kept away from to second-stage casing 21 lower part sets up second grade discharge gate 23, set up (mixing) shaft 24 in the second-stage casing 21, set up double helix blade 25 on (mixing) shaft 24, double helix blade 25 includes the opposite blade of inside and outside two-layer spiral direction.

Mixer doublestage sets up, set up paddle formula stirring wheel in the first mixer, mainly used is with the material, the fluid carries out the primary mixing, make the broken mixture of material of block piece advance the fluid and become thick liquid, thick liquid flows into second grade feed inlet 22 at one-level discharge gate 13, thick liquid carries out careful mixing in second grade mixer 2, become even lotion and then flow toward subsequent position of use through second grade discharge gate 23, the one-level has clear division of labor with second grade mixer, thick mixture and fine mixing divide step-by-step to go on, obtain even thick liquid in the device export.

As shown in fig. 2, double helix blade 25 is arranged on stirring shaft 24, double helix blade 25 includes two layers of blades with opposite spiral directions, for convenience of drawing in fig. 2, the same left-handed structure is drawn by the inner and outer layer helical blades on the same stirring shaft 24, actually, when the outer layer is left-handed helix, the inner ring is right-handed helix, an upper stirring shaft 24 in fig. 2, when stirring shaft 24 is counterclockwise rotation seen from the motor end, the outer layer left-handed blade of double helix blade 25 pushes the slurry leftwards, the right-handed blade of the inner layer pushes the slurry leftwards rightwards, the inner and outer layers flow in two directions, and the mixing is sufficient.

As shown in fig. 2, there are two stirring shafts 24, the two stirring shafts 24 are horizontally arranged and parallel to each other, and the double helical blades 25 on the two stirring shafts 24 have the same helical direction and rotational movement direction.

The slurry in the secondary shell 21 is pushed by the double helix blades 25 to flow, the helical directions of the inner and outer layer blades on the two stirring shafts 24 are the same, the outer ring is taken to rotate leftwards, the inner ring is taken to rotate rightwards, the two layers of fluid in the middle position of the outer layer blade move upwards and downwards at the same time after the two layers of fluid are rotated, the two layers of fluid are mutually sheared at the symmetrical line, the shearing force is favorable for mixing the slurry, as shown in figure 3, a plurality of symmetrical helical structures (a pair of helical blades on the upper part of figure 3) on the market are mutually extruded at the symmetrical line, only the fluid is mixed in the flowing process, the double helix structures do not play a combined role, in the application, the double helix structures have a shearing function at the intersection, and part of the slurry does not flow through the intersection point of the symmetrical line and the stirring shaft 24 connecting line, but is pushed by the rotation of one double-spiral blade 25, and then is "caught" by the other double-spiral blade 25 and carries the flow, and the part of the pulp flows in a gourd shape between the two double-spiral blades 25 and axially advances, so that the flow path is longer, and the mixing is more thorough.

As shown in fig. 2 and 4, the stirring machine further includes a spiral shaft seal 3, a shaft penetrating hole 211 is formed in a position where the stirring shaft 24 penetrates through the secondary casing 21, the rotary shaft seal 3 includes a threaded sleeve 31, the threaded sleeve 31 is sleeved on the stirring shaft 24 and is in transmission connection with the stirring shaft 24, the threaded sleeve 31 is matched with the shaft penetrating hole 211 to realize shaft end sealing, the extruding direction of the external threads of the threaded sleeve 31 faces to a stirring area, and the spiral shaft seal 3 having the same structure as that of the secondary stirring machine 2 is arranged in a position where the blade type stirring wheel rotating shaft of the primary stirring machine 1 penetrates through the primary casing 11.

The screw thread that has rotated has the effect of promoting fluid towards one side motion in a narrow and small cylinder space, as shown in fig. 4, in the position department that (mixing) shaft 24 passes secondary casing 21, carry out axle head dynamic seal through the screw thread, the screw thread is the right-hand thread, (mixing) shaft 24 is anticlockwise rotatory towards stirring regional viewing from the motor, the alveolus of screw thread has an axial component towards stirring regional to the driving force of the fluid medium in the alveolus, prevent that the thick liquids in the stirring region from flowing outside secondary casing 21 along the (mixing) shaft, the power of (mixing) shaft 24 is directly taken to the motion power of spiral alveolus, dynamic seal is reliable, the setting is simple and convenient, compare in packing seal, do not have quick-wear part.

As shown in fig. 5 to 8, the spiral shaft seal 3 further includes an extruding ring 32 and a return spring 33, the thread on the outer surface of the thread bushing 31 has a notch 311, the inner wall of the shaft through hole 211 is further provided with a ring groove, the extruding ring 32 is disposed in the ring groove, the inner ring of the extruding ring 32 is provided with a radial inward protrusion 321 facing the thread bushing 31 to be embedded in the thread groove, the inward protrusion width of the extruding ring 32 is smaller than the width of the notch 311, one end of the return spring 33 abuts against one end of the side wall of the ring groove to abut against the end surface of the extruding ring 32, and the return spring 33 extrudes the extruding ring 32 to one side far away from the stirring area.

If the screw thread groove alone pushes the slurry towards the stirring area, the pushing force is small due to low rotation speed, and the slurry medium in the screw thread on the outer surface of the screw sleeve 31 may rotate in situ and cannot be transferred to the stirring area where the double helical blade is located under the condition of small pushing force, so that the present application further arranges the extruding ring 32 on the inner wall of the shaft through hole 211, the inner ring of the extruding ring 32 is provided with a protrusion 321 towards the screw thread groove to be embedded into the screw thread groove, the protrusion 321 keeps the angular position in the circumferential direction and can be pushed by the side surface of the screw thread groove to move axially, as shown in fig. 7, after the screw sleeve 31 rotates for one circle, the protrusion 321 is pushed to move axially by a lead distance, and then falls axially to reset at the corresponding position of the notch 311, the notch 311 is provided with a reed choke mouth having elasticity smaller than that of the return spring 33, and only the protrusion 321 is allowed to push the notch 311 under the action of the return spring 33, the protrusion 321 is not closed when contacting with the reed bottleneck, and prevents the slurry medium from axially passing through the notch 311, as shown in fig. 6, on the expansion drawing of the outer cylindrical surface of the thread bush 31, the right hand thread rotates and moves upwards in the drawing, and the thread tooth groove is matched with the protrusion 321 to push the medium in the tooth groove to flow along the tooth groove, so that the complete pushing of the thread bush 31 to the slurry medium is ensured, the sealing of the shaft end is ensured to be reliable, and the leakage is prevented.

As shown in fig. 6 to 8, there are at least three notches 311, the three notches 311 have a thread lead which is one and one third different from each other in sequence, there are three extrusion rings 32, the extrusion rings 32 are axially stacked in sequence, a return spring 33 is also arranged between adjacent extrusion rings 32, all the return springs 33 push all the extrusion rings 32 toward one side away from the stirring area, in the circumferential direction, the protruding angles of the inner rings of two extrusion rings 32 which are away from each other have a difference of 120 degrees, and the protruding angle phase of the inner ring of the middle extrusion ring 32 is equal to the protruding angle phase of any one of the extrusion rings 32 at both sides.

The phase angles of the three gaps 311 are different by 120 degrees, the projections on the axial section are circumferentially and uniformly distributed, and a lead is added to correspond to 360 degrees, namely: the adjacent notches 311 have a phase difference of 480 degrees (one and one third of lead) at a helical angle, the three notches 311 respectively provide a reset position for the three protrusions 321, and because the circumferential angles of the three protrusions 321 are not circumferentially equally divided, the three protrusions 321 do not pass through the notches 311 together for resetting, and the resetting is performed successively at the resetting time, so that at least one notch is blocked at each time, and at least one protrusion 321 in the thread tooth socket is kept in the tooth socket to slide.

The double helical blade 25 is composed of a plurality of single-lead helical blades which are punched and formed, and the double helical blade 25 is fixed with the stirring shaft 24 through a fastening piece. The punched spiral blade is accurate in size and shape, and is convenient to maintain and replace through connection of the fastening piece.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (3)

1. The utility model provides a high concentration doublestage horizontal mixer which characterized in that: the stirring machine comprises a horizontal type first-stage stirring machine (1) and a horizontal type second-stage stirring machine (2), wherein the first-stage stirring machine (1) comprises a first-stage casing (11) and a paddle type stirring wheel arranged inside the first-stage casing (11), one end of the upper surface of the first-stage casing (11) is provided with a feeding hole (12), the other end of the lower part of the first-stage casing (11) is provided with a first-stage discharging hole (13), the second-stage stirring machine (2) comprises a second-stage casing (21), one end of the upper part of the second-stage casing (21) is provided with a second-stage feeding hole (22), the second-stage feeding hole (22) is positioned under the first-stage discharging hole (13), one end of the lower part of the second-stage casing (21) far away from the first-stage stirring machine (1) is provided with a second-stage discharging hole (23), a stirring shaft (24) is arranged in the second-stage casing (21), and double-helix blades (25) are arranged on the stirring shaft (24), the double-spiral blades (25) comprise inner and outer layers of blades with opposite spiral directions;

the two stirring shafts (24) are horizontally arranged and are parallel to each other, and double helical blades (25) on the two stirring shafts (24) have the same helical direction and the same rotational motion direction;

the stirring machine further comprises a spiral shaft seal (3), a shaft penetrating hole (211) is formed in the position, which is penetrated by the stirring shaft (24), of the secondary shell (21), the spiral shaft seal (3) comprises a threaded sleeve (31), the threaded sleeve (31) is sleeved on the stirring shaft (24) and is in transmission connection with the stirring shaft (24), the threaded sleeve (31) is matched with the shaft penetrating hole (211) to realize shaft end sealing, and the spiral shaft seal (3) with the same structure as that in the secondary stirring machine (2) is arranged at the position, which is penetrated through the primary shell (11), of a blade type stirring wheel rotating shaft of the primary stirring machine (1);

spiral shaft seal (3) still include crowded material ring (32) and reset spring (33), the apparent screw thread of thread bush (31) has breach (311), wear still to be equipped with the annular on shaft hole (211) inner wall, put crowded material ring (32) in the annular, crowded material ring (32) inner circle sets up radial inside arch (321) towards thread bush (31), and arch (321) imbed in the screw thread alveolus, crowded material ring (32) protruding width inwards is less than breach (311) width, reset spring (33) one end is supported tight annular lateral wall one end and is supported the terminal surface of tightly crowded material ring (32), and reset spring (33) will crowded material ring (32) are to one side of keeping away from the stirring region.

2. The high-consistency dual-stage horizontal mixer of claim 1, wherein: the utility model discloses a material extruding machine, including breach (311), material extruding ring (32), two extruding rings (32), and the protruding angle phase of inner circle of two extruding rings (32) that keep away from mutually differs 120 degrees, and the protruding angle phase of inner circle of middle extruding ring (32) equals the protruding angle phase of arbitrary one in two extruding rings (32) of both sides, notch (311) is three at least, and three breach (311) differs a thread lead of third again in proper order, material extruding ring (32) also has threely, and material extruding ring (32) axial is overlapped in proper order, also sets up reset spring (33) between adjacent material extruding ring (32), and all reset spring (33) are all pushed all material extruding ring (32) toward the one side of keeping away from the stirring region.

3. The high-consistency dual-stage horizontal mixer of claim 1, wherein: the double-helix blade (25) is composed of a plurality of single-lead helical blades formed by punching, and the double-helix blade (25) is fixed with the stirring shaft (24) through a fastener.

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