CN201949924U

CN201949924U - Improved horizontal decanter centrifuge

Info

Publication number: CN201949924U
Application number: CN2010206717405U
Authority: CN
Inventors: 吴培钧; 莫珉珉
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-21
Filing date: 2010-12-21
Publication date: 2011-08-31
Anticipated expiration: 2020-12-21

Abstract

The utility model discloses an improved horizontal decanter centrifuge, which comprises a rotary drum, a spiral conveyor and a feed pipe, wherein the rotary drum is supported on a first bearing seat and a second bearing seat on a rack and comprises a first end part and a second end part, the spiral conveyor is coaxially arranged in the rotary drum, a separation cavity is formed between the rotary drum and the spiral conveyor, the first end part of the rotary drum and the corresponding end of the spiral conveyor are externally connected to a differential mechanism, through holes are formed at the axle center of the differential mechanism and the axle center of the spiral conveyor respectively, one end of the feed pipe is inserted into the through hole, the other end of the feed pipe is fixed on a support seat positioned on the rack in a still manner, a first centripetal pump for pumping the separated clear liquor out of the machine is arranged at the axle center at one end in the spiral conveyor, which corresponds to the second end part of the rotary drum, and deslagging through holes are arranged on the peripheral wall of the second end part of the rotary drum. The effective volume of the separation cavity in the improved horizontal decanter centrifuge can be maximal, and the separation effect is improved; and a seal element is not required, the maintenance frequency of equipment is reduced, and the working efficiency is effectively improved.

Description

A kind of modified horizontal screw centrifuge

Technical field

The utility model relates to a kind of horizontal screw centrifuge, the follow-on downstream-type horizontal screw centrifuge of particularly a kind of feed pipe stationary fixing on frame.

Background technology

In the downstream-type horizontal screw centrifuge of the prior art, shown in the structure and separation principle schematic diagram of the existing downstream-type horizontal screw centrifuge of accompanying drawing 2, most being provided with in disengagement chamber is used to carry the clear liquid return duct of liquid to the big end of rotary drum, make that the segment space of disengagement chamber is occupied, cause the degree of depth that is used for Separation of Solid and Liquid of rotary drum to reduce, also just reduce the volume of disengagement chamber, finally influenced the effect of separating; In addition, in the horizontal screw centrifuge for barrier material suspension and isolated clarified solution, between rotary drum that rotates and auger conveyor, to add moving sealing element, and as easy as rolling off a log the wearing and tearing by the hard particles in the suspension of this moving sealing element and cause losing efficacy, make suspension enter in the clarified solution, cause the clarity of clarified solution to descend.

The utility model content

Of the present utility model to provide a kind of follow-on downstream-type horizontal screw centrifuge, the particularly feed pipe on it be the axle center that is fixedly installed on differential mechanism, do not need the movable sealing parts, improved the service life of equipment when improving separative efficiency effectively.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of modified horizontal screw centrifuge, comprise the clutch shaft bearing seat and second bearing block that are arranged on the frame, main motor, auxiliary-motor, differential mechanism, be supported in the rotary drum on described clutch shaft bearing seat and described second bearing block, feed arrangement and drawing mechanism, described rotary drum inside is coaxially arranged with auger conveyor, described auger conveyor comprises cylindrical shell, be arranged on the rotating shaft at described cylindrical shell two ends, circumferentially be arranged on the conveying blade of the outside wall surface of described cylindrical shell, described differential mechanism comprises main pulley, secondary belt pulley and differential mechanism body, the described main pulley of described main motor-driven drives described drum rotating, described auxiliary-motor drives described secondary belt pulley and drives described auger conveyor rotation, form disengagement chamber between described rotary drum and the described auger conveyor, the periphery of described rotary drum is arranged with case, corresponding first through hole and second through hole of being provided with in the axle center of described differential mechanism body with the axle center of described auger conveyor, also be provided with a supporting base on the frame, described feeding-passage is the feed pipe of one one end stationary fixing on described supporting base, the other end of described feed pipe inserts in described first through hole and described second through hole successively, and the tube chamber of described feed pipe is connected with described disengagement chamber.

Preferably, described rotary drum has first end and the second end, described first end is supported on the described clutch shaft bearing seat, described the second end is supported on described second bearing block, described differential mechanism body is connected to the first end of described rotary drum, described drawing mechanism is arranged on the second end of described rotary drum, and further, described drawing mechanism comprises solid phase drawing mechanism and liquid phase drawing mechanism.

Still more preferably, described solid phase drawing mechanism is several deslagging through holes that are arranged on the circumferential distribution on the perisporium of the end on described second bearing block of being positioned at of described rotary drum, perhaps, described solid phase drawing mechanism is the deslagging nozzle that is arranged on the perisporium of the end on described second bearing block of being positioned at of described rotary drum, again further, the lowest part of corresponding several described deslagging through holes is provided with slag notch on the described case.

Preferably, described liquid phase drawing mechanism is first centripetal discharge pump that is arranged on the end on described second bearing block of being positioned at of described auger conveyor, described first centripetal discharge pump comprises first impeller assembly and first drain pipe, described first drain pipe is arranged on the axle center that is positioned at the rotating shaft on described second bearing block on the described auger conveyor, one end of described first drain pipe extends, the other end is vertically connected on the pivot place of described first impeller assembly, the pivot of described first impeller assembly is positioned on the axial line of described auger conveyor cylindrical shell, and described first drain pipe is connected with described disengagement chamber.

Preferably, described liquid phase drawing mechanism comprises heavy-fluid phase drawing mechanism and light liquid drawing mechanism mutually: described heavy-fluid phase drawing mechanism is second centripetal discharge pump that is arranged on the end on described second bearing block of being positioned at of described auger conveyor, described second centripetal discharge pump comprises second impeller assembly and second drain pipe, described second drain pipe is arranged on the axle center that is positioned at the rotating shaft on described second bearing block on the described auger conveyor, described second drain pipe an end extend, the other end vertically is connected to the pivot place of described second impeller assembly; Described light liquid phase drawing mechanism is the 3rd centripetal discharge pump that is arranged on the end on described second bearing block of being positioned at of described auger conveyor, described the 3rd centripetal discharge pump comprises trilobed wheel assembly and the 3rd drain pipe, the coaxial inside that is arranged on described second drain pipe of described the 3rd drain pipe, one end of described the 3rd drain pipe stretches out outside described second drain pipe, the other end vertically is connected to the pivot place of described trilobed wheel assembly, the pivot of described trilobed wheel assembly is positioned on the axial line of described auger conveyor cylindrical shell, described second drain pipe, described the 3rd drain pipe is connected with described disengagement chamber respectively, described second impeller assembly is arranged on the periphery of described the 3rd drain pipe, form second liquid outlet channel between the outer wall of the inwall of described second drain pipe and described the 3rd drain pipe, described second impeller assembly is nearer than described second bearing block of described trilobed wheel assembly distance.

The beneficial effects of the utility model are: its feed pipe stationary fixing is arranged on the place, axle center of feed pipe support and differential mechanism, and be connected with disengagement chamber between the auger conveyor with rotary drum, and feed pipe in the utility model and drawing mechanism are separately positioned on the two ends of rotary drum, so do not need to be provided with the clear liquid return duct, make the volume of the disengagement chamber between rotary drum and the auger conveyor reach maximum, the time that suspension stops in disengagement chamber reaches the longest, improved the effect of separating, simultaneously, isolated clarified solution pumps outside the machine by the centripetal discharge pump that is arranged on the auger conveyor in the utility model, need not to be provided with moving sealing element, reduce the repair rate of equipment, improved operating efficiency effectively.

Description of drawings

Accompanying drawing 1 is the structural representation (broken section) of the modified horizontal screw centrifuge in the utility model;

Accompanying drawing 2 is the structure and the separation principle schematic diagram of the horizontal screw centrifuge of downstream-type of the prior art.

In the accompanying drawing: 1, clutch shaft bearing seat; 2, second bearing block; 3, rotary drum; 31, first end; 32, the second end; 4, cylindrical shell; 5, rotating shaft; 6, conveying blade; 7, main motor; 8, auxiliary-motor; 9, differential mechanism body; 10, disengagement chamber; 11, case; 12, supporting base; 13, feed pipe; 14, deslagging through hole; 15, slag notch; 16, first impeller assembly; 17, first drain pipe.

The specific embodiment

Below in conjunction with embodiment shown in the drawings the technical solution of the utility model is done following detailed description the in detail:

As shown in Figure 1, follow-on horizontal screw centrifuge of the present utility model comprises the clutch shaft bearing seat 1 and second bearing block 2 that is arranged on the frame, be supported in the rotary drum 3 on the clutch shaft bearing seat 1 and second bearing block 2, the coaxial auger conveyor that is arranged on rotary drum 3 inside, main motor 7, auxiliary-motor 8, feed arrangement and drawing mechanism, rotary drum 3 has first end 31 and the second end 32, auger conveyor comprises cylindrical shell 4, be arranged on the rotating shaft 5 at the two ends of cylindrical shell 4, circumferentially be arranged on the conveying blade 6 of the outside wall surface of cylindrical shell 4, the first end 31 of rotary drum 3 is provided with differential mechanism, described differential mechanism comprises main pulley, secondary belt pulley and differential mechanism body 9, differential mechanism body 9 and rotary drum 3 coaxial installations, the both sides of differential mechanism body 9 and rotary drum 3 separation clutch shaft bearing seats 1, main motor 7 drives main pulley and drives rotary drum 3 rotations, auxiliary-motor 8 drives secondary belt pulley and drives the auger conveyor rotation, produce differential between rotary drum 3 and the auger conveyor, form disengagement chamber 10 between rotary drum 3 and the auger conveyor, the periphery of rotary drum 3 is provided with case 11, frame is provided with a supporting base 12, the axle center of differential mechanism body 9 offers first through hole, the axle center of the rotating shaft 5 of auger conveyor offers second through hole, feed arrangement is that one one end inserts first through hole and second through hole successively, the feed pipe 13 of other end stationary fixing on supporting base 12, this feed pipe 13 is connected with disengagement chamber 10, drawing mechanism comprises solid phase drawing mechanism and liquid phase drawing mechanism, the liquid phase drawing mechanism comprises first drain pipe 17 in the axle center of an end that is arranged on the second end that is positioned at rotary drum 3 32 on the auger conveyor, one end of this first drain pipe 17 extends, the other end vertically is connected to the pivot place of first impeller assembly 16 on the cross-wise direction that is arranged on auger conveyor, be interconnected between first drain pipe 17 and the disengagement chamber 10, the solid phase tapping channel comprise along several deslagging through holes 14 on the perisporium of the second end 32 that circumferentially is arranged on rotary drum 3 and be arranged on corresponding these deslagging through holes 14 on the case 11 under a slag notch 15 of position.

In addition, above-mentioned solid phase drawing mechanism also can be arranged on several nozzles of circumferentially arranging in the edge of the second end 32 of rotary drum 3, above-mentioned liquid phase drawing mechanism comprises heavy-fluid phase drawing mechanism and light liquid drawing mechanism mutually: described heavy-fluid phase drawing mechanism is second centripetal discharge pump that is arranged on the end on described second bearing block 2 of being positioned at of described auger conveyor, described second centripetal discharge pump comprises second impeller assembly and second drain pipe, described second drain pipe is arranged on the axle center that is positioned at the rotating shaft 5 on described second bearing block 2 on the described auger conveyor, described second drain pipe an end extend, the other end vertically is connected to the pivot place of described second impeller assembly; Described light liquid phase drawing mechanism is the 3rd centripetal discharge pump that is arranged on the end on described second bearing block 2 of being positioned at of described auger conveyor, described the 3rd centripetal discharge pump comprises trilobed wheel assembly and the 3rd drain pipe, the coaxial inside that is arranged on described second drain pipe of described the 3rd drain pipe, one end of described the 3rd drain pipe stretches out outside described second drain pipe, the other end vertically is connected to the pivot place of described trilobed wheel assembly, the pivot of described trilobed wheel assembly is positioned on the axial line of described auger conveyor cylindrical shell 4, described second drain pipe, described the 3rd drain pipe is connected with described disengagement chamber 10 respectively, described second impeller assembly is arranged on the periphery of described the 3rd drain pipe, form second liquid outlet channel between the outer wall of the inwall of described second drain pipe and described the 3rd drain pipe, described second impeller assembly is nearer than described second bearing block 2 of described trilobed wheel assembly distance.

The operation principle of horizontal screw centrifuge of the present utility model:

After suspension to be separated enters from feed pipe 13, several through holes on the perisporium of the end of auger conveyor cylindrical shell 4 enter disengagement chamber 10, under the effect that rotary drum 3 and auger conveyor differential rotate, the solid matter that proportion is bigger is deposited to the inwall of rotary drum 3, and be pushed to several deslagging through hole 14 places along with the rotation of conveying blade 6 and get rid of, enter in the case 11, outside the 15 eliminating machines of the slag notch on case 11, and meanwhile, the liquid that proportion is lighter be focused to auger conveyor cylindrical shell 4 around, the same position that under the effect of conveying blade 6, is pushed to first impeller assembly 16, through the effect of this centripetal discharge pump, get rid of to machine by first drain pipe 17.

Feed pipe 13 stationary fixing in the downstream-type horizontal screw centrifuge in the utility model are arranged on the place, axle center of feed pipe 13 supports and differential mechanism, and feed pipe 13 and drawing mechanism are separately positioned on the two ends of rotary drum 3, so do not need to be provided with the clear liquid return duct, make the volume of the disengagement chamber 10 between rotary drum 3 and the auger conveyor reach maximum, the time that suspension stops in disengagement chamber 10 reaches the longest, improved the effect of separating, simultaneously, isolated clarified solution pumps outside the machine by the centripetal discharge pump that is arranged on the auger conveyor in the utility model, need not to be provided with moving sealing element, reduce the repair rate of equipment, improved operating efficiency effectively.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims

1. modified horizontal screw centrifuge, comprise the clutch shaft bearing seat and second bearing block that are arranged on the frame, main motor, auxiliary-motor, differential mechanism, be supported in the rotary drum on described clutch shaft bearing seat and described second bearing block, feed arrangement and drawing mechanism, described rotary drum inside is coaxially arranged with auger conveyor, described auger conveyor comprises cylindrical shell, be arranged on the rotating shaft at described cylindrical shell two ends, circumferentially be arranged on the conveying blade of the outside wall surface of described cylindrical shell, described differential mechanism comprises main pulley, secondary belt pulley and differential mechanism body, the described main pulley of described main motor-driven drives described drum rotating, described auxiliary-motor drives described secondary belt pulley and drives described auger conveyor rotation, form disengagement chamber between described rotary drum and the described auger conveyor, the periphery of described rotary drum is arranged with case, this horizontal screw centrifuge is characterised in that: corresponding first through hole and second through hole of being provided with the axle center of described auger conveyor in the axle center of described differential mechanism body, also be provided with a supporting base on the frame, described feeding-passage is the feed pipe of one one end stationary fixing on described supporting base, the other end of described feed pipe inserts in described first through hole and described second through hole successively, and the tube chamber of described feed pipe is connected with described disengagement chamber.

2. a kind of modified horizontal screw centrifuge according to claim 1, it is characterized in that: described rotary drum has first end and the second end, described first end is supported on the described clutch shaft bearing seat, described the second end is supported on described second bearing block, described differential mechanism body is connected to the first end of described rotary drum, and described drawing mechanism is arranged on the second end of described rotary drum.

3. a kind of modified horizontal screw centrifuge according to claim 1 and 2 is characterized in that: described drawing mechanism comprises solid phase drawing mechanism and liquid phase drawing mechanism.

4. a kind of modified horizontal screw centrifuge according to claim 3 is characterized in that: described solid phase drawing mechanism is several deslagging through holes that are arranged on the circumferential distribution on the perisporium of the end on described second bearing block of being positioned at of described rotary drum.

5. a kind of modified horizontal screw centrifuge according to claim 3 is characterized in that: described solid phase drawing mechanism is the deslagging nozzle that is arranged on the perisporium of the end on described second bearing block of being positioned at of described rotary drum.

6. according to claim 4 or 5 described a kind of modified horizontal screw centrifuges, it is characterized in that: the lowest part of corresponding several described deslagging through holes is provided with slag notch on the described case.

7. a kind of modified horizontal screw centrifuge according to claim 3, it is characterized in that: described liquid phase drawing mechanism is first centripetal discharge pump that is arranged on the end on described second bearing block of being positioned at of described auger conveyor, described first centripetal discharge pump comprises first impeller assembly and first drain pipe, described first drain pipe is arranged on the axle center that is positioned at the rotating shaft on described second bearing block on the described auger conveyor, one end of described first drain pipe extends, the other end is vertically connected on the pivot place of described first impeller assembly, the pivot of described first impeller assembly is positioned on the axial line of described auger conveyor cylindrical shell, and described first drain pipe is connected with described disengagement chamber.

8. a kind of modified horizontal screw centrifuge according to claim 3, it is characterized in that: described liquid phase drawing mechanism comprises heavy-fluid phase drawing mechanism and light liquid drawing mechanism mutually: described heavy-fluid phase drawing mechanism is second centripetal discharge pump that is arranged on the end on described second bearing block of being positioned at of described auger conveyor, described second centripetal discharge pump comprises second impeller assembly and second drain pipe, described second drain pipe is arranged on the axle center that is positioned at the rotating shaft on described second bearing block on the described auger conveyor, described second drain pipe an end extend, the other end vertically is connected to the pivot place of described second impeller assembly; Described light liquid phase drawing mechanism is the 3rd centripetal discharge pump that is arranged on the end on described second bearing block of being positioned at of described auger conveyor, described the 3rd centripetal discharge pump comprises trilobed wheel assembly and the 3rd drain pipe, the coaxial inside that is arranged on described second drain pipe of described the 3rd drain pipe, one end of described the 3rd drain pipe stretches out outside described second drain pipe, the other end vertically is connected to the pivot place of described trilobed wheel assembly, the pivot of described trilobed wheel assembly is positioned on the axial line of described auger conveyor cylindrical shell, described second drain pipe, described the 3rd drain pipe is connected with described disengagement chamber respectively, described second impeller assembly is arranged on the periphery of described the 3rd drain pipe, form second liquid outlet channel between the outer wall of the inwall of described second drain pipe and described the 3rd drain pipe, described second impeller assembly is nearer than described second bearing block of described trilobed wheel assembly distance.