CN111054528A - Piston pusher centrifuge and feeding method thereof - Google Patents
Piston pusher centrifuge and feeding method thereof Download PDFInfo
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- CN111054528A CN111054528A CN201911288905.2A CN201911288905A CN111054528A CN 111054528 A CN111054528 A CN 111054528A CN 201911288905 A CN201911288905 A CN 201911288905A CN 111054528 A CN111054528 A CN 111054528A
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- push rod
- main shaft
- washing water
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 58
- 238000005406 washing Methods 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims description 15
- 239000000706 filtrate Substances 0.000 claims description 9
- 230000004323 axial length Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Classifications
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- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/02—Electric motor drives
- B04B9/04—Direct drive
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- Centrifugal Separators (AREA)
Abstract
A piston pusher centrifuge comprises a main shaft, a push rod, a rotary drum, a pusher, a distributor, a driving mechanism, a rotary drum reinforcing structure, a main shaft supporting structure, a sleeve and a casing arranged outside the rotary drum; one end of the drum reinforcing structure is fixed on the sleeve, and the other end of the drum reinforcing structure is fixed on the drum wall of the drum; the push rod is of a hollow tubular structure, a material channel communicated with an inner pipeline of the push rod is arranged on the main shaft between the material pusher and the distributor and/or the push rod, and the material enters a gap between the material pusher and the distributor from the material channel and then enters the rotary drum; the middle parts of the main shaft, the push rod and the sleeve are provided with a washing water channel communicated with the interior of the push rod, washing water enters the interior of the rotary drum from the washing water channel, and due to the adoption of a multipoint supporting structure and a unique feeding method, the rotary drum has the advantages of large diameter, high rotating speed, long length of a filtering area, multiple stages of the rotary drum, difficulty in vibration, large separation factor, low water content of filter residues, small washing water equivalent, large production capacity and capability of being large-sized.
Description
Technical Field
The patent relates to a centrifuge, in particular to a piston pushing centrifuge and a feeding method thereof.
Background
A conventional piston pusher centrifuge is a continuously operating, pulse discharge, filter centrifuge. In the case of high speed operation, the material is continuously fed through a feed pipe at the open end of the drum and flows along a feed distributor onto the screen of the drum. The filtrate passes through the filter screen and is continuously discharged through the filtrate outlet, and filter residue accumulated on the inner surface of the filter screen is pushed out along the inner wall surface of the rotary drum by a pusher reciprocating relative to the rotary drum.
Because the materials are fed in from the feeding pipe at the open end of the rotary drum, the support of the main shaft of the conventional piston pusher centrifuge can only be made into a unilateral support structure, and the support structure is that two bearings of the main shaft are positioned at the same side of the rotary drum. The supporting structure of the rotary drum belongs to a cantilever structure, one end of the rotary drum is fixed on the main shaft or the push rod, and the other end of the rotary drum is a free end (capable of generating force parallel to the axial direction and force perpendicular to the axial direction). The axial feeding end of the rotary drum wall is connected with the main shaft or the push rod through the rotary drum bottom (a supporting structure) to support the rotary drum, and the axial discharging end of the rotary drum wall is not provided with a supporting structure and is connected with the main shaft or the push rod to support the rotary drum.
The axial feeding end of the primary rotating drum wall of the conventional primary piston pusher centrifuge is connected with the main shaft through a primary rotating drum bottom (supporting structure) to support the primary rotating drum, and the axial discharging end of the primary rotating drum wall is not provided with a supporting structure and is connected with the main shaft to support the primary rotating drum.
The axial feeding end of the primary rotating drum wall of the conventional secondary piston pusher centrifuge is connected with a push rod through a primary rotating drum bottom (supporting structure) to support the primary rotating drum, and the axial discharging end of the primary rotating drum wall is not connected with the push rod through the supporting structure to support the primary rotating drum. The axial feeding end of the second-stage rotating drum wall is connected with the main shaft through a second-stage rotating drum bottom (supporting structure) to support the second-stage rotating drum, and the axial discharging end of the second-stage rotating drum wall is not provided with a supporting structure and is connected with the main shaft to support the second-stage rotating drum.
The axial feeding end of the first-stage rotating drum wall of the conventional three-stage piston pusher centrifuge is connected with a main shaft (the first-stage rotating drum bottom is connected with the third-stage rotating drum bottom, and the third-stage rotating drum bottom is connected with the main shaft) by a first-stage rotating drum bottom to support the first-stage rotating drum, and the axial discharging end of the first-stage rotating drum wall is not provided with a supporting structure and is connected with the main shaft to support the first-stage rotating drum. The axial feeding end of the second-stage rotating drum wall is connected with the push rod through the second-stage rotating drum bottom to support the second-stage rotating drum, and the axial discharging end of the second-stage rotating drum wall is not provided with a supporting structure and is connected with the push rod to support the second-stage rotating drum. The axial feeding end of the three-stage rotary drum wall is connected with the main shaft through the three-stage rotary drum bottom to support the three-stage rotary drum, and the axial discharging end of the three-stage rotary drum wall is not provided with a supporting structure and is connected with the main shaft to support the three-stage rotary drum.
The centrifugal moment M borne by the fixed end of the rotary drum is equal to the product of the resultant force F of the centrifugal forces of the rotary drum, the filter screen, the materials and the like and the length L of the rotary drum. M ═ F × L. The centrifugal force is proportional to the centrifugal radius and the square of the rotational angular velocity. F ═ m × r × ω2. Meanwhile, the gravitational moment M borne by the fixed end of the rotary drum is equal to the product of the resultant force F of the gravity of the rotary drum, the filter screen, the materials and the like and the length L of the rotary drum. M ═ F × L.
The stability of a single-sided support is less than that of a double-sided support structure. The cantilever structure causes the free end of the rotary drum to vibrate under the combined action of forces parallel to the axial direction and forces perpendicular to the axial direction, and the bottom of the rotary drum at the fixed end of the rotary drum cracks when serious, so that serious accidents are caused.
The mechanical characteristics of the unilateral support and cantilever structure limit the increase of the diameter, the rotating speed, the length of a filtering area and the stage number of the rotary drum, so that the piston pusher centrifuge has a series of defects of easy vibration, small separation factor, short material filtering time, high material water content, large energy consumption for drying unit products, large washing water equivalent, large ring-shaped washing water treatment difficulty after use, increased cost conservation, small stage number of the rotary drum, small production capacity, no large scale and the like.
Disclosure of Invention
The invention aims to provide a piston pusher centrifuge, which overcomes the defects of small diameter of a rotary drum, slow rotating speed, short length of a filtering area, few stages of the rotary drum, easy vibration, small separation factor, short material filtering time, high material moisture content, high energy consumption for drying a unit product, large washing water equivalent, large ring-shaped difficulty in treating used washing water, increased cost conservation, few stages of the rotary drum, small production capacity and incapability of large scale in the conventional piston pusher centrifuge.
The technical scheme adopted by the invention is as follows: a piston pusher centrifuge comprises a main shaft, a push rod, a rotary drum with an open end and a hole on the side wall, a pusher, a distributor, a driving mechanism, a rotary drum reinforcing structure, a main shaft supporting structure, a sleeve and a casing arranged outside the rotary drum, wherein the lower end of the casing is provided with a filtrate outlet and a filter residue outlet; the method is characterized in that:
the main shaft supporting structure comprises a left supporting structure and a right supporting structure which are respectively arranged on two sides of the rotary drum; the drum bottom of the drum is fixedly arranged on the main shaft or the push rod, the drum reinforcing structures are uniformly distributed in the circumferential direction of the sleeve, one end of each drum reinforcing structure is fixed on the sleeve, and the other end of each drum reinforcing structure is fixed on the drum wall of the drum;
the push rod is of a hollow tubular structure, the left end of the push rod is a feeding inlet, and the right end of the push rod is a washing water inlet;
the main shaft and the push rod are driven to rotate by a driving mechanism; the push rod is driven by a driving mechanism to axially reciprocate; the main shaft is of a hollow tubular structure, and the push rod is arranged inside the main shaft; an opening is formed in the drum wall of the rotary drum to serve as a filtrate channel; the material pusher is fixedly arranged at the left end of the main shaft or the push rod; the distributor is arranged on the right side of the pusher, and a gap between the distributor and the pusher is used as a material channel; the sleeve is fixedly sleeved outside the main shaft or the push rod;
a material channel communicated with an inner pipeline of the push rod is arranged on the main shaft between the material pusher and the distributor and/or the push rod, and the material enters a gap between the material pusher and the distributor from the material channel and then enters the rotary drum; the middle parts of the main shaft, the push rod and the sleeve are provided with a washing water channel communicated with the interior of the push rod, washing water enters the interior of the rotary drum from the washing water channel, and a partition plate used for separating the material channel and the washing water channel is arranged in the push rod.
Further, the drum reinforcing structure is composed of one or more of plates, columns, pipes, hollow shafts and fasteners which are uniformly distributed along the circumferential direction of the drum.
Furthermore, the drum reinforcing structures can be distributed in the drum along the axial direction in a row and positioned between the axial feeding end and the axial discharging end of the drum wall, and the axial length is equal to or less than the length of the filtering area of the drum wall, so that a continuous supporting structure is formed; the two rows of the supporting structures are respectively positioned at the axial feeding end and the axial discharging end of the drum wall and form a simple supporting beam supporting structure supported by double supporting points; can be more than two columns, are respectively positioned between the axial feeding end and the axial discharging end of the drum wall and form a supporting structure with multiple supporting points.
Further, the drum of the drum is a single-stage drum or a double-stage drum or a multi-stage drum; the rotary drum and the rotary drum, the rotary drum and the pusher, the rotary drum and the feeding distributor, the pusher and the feeding distributor, the rotary drum and the main shaft and the rotary drum and the push rod are connected through a connecting structure to transmit power to rotate or rotate and reciprocate.
Further, the connecting structure is a combination of one or more of a plate, a column, a pipe and a fastener, or a combination of one or more of them and a fastener.
Furthermore, the material channel or the washing water channel is in the form of holes or circular seams and the like, and when the channel is a hole, the shaft is in a continuous form; when the channel is a circular seam, the shaft is in a disconnected form, and two ends of the circular seam are connected by adopting a connecting structure.
Furthermore, the push rod is designed into a hollow tubular structure with two open ends and penetrates through the rotary drum, materials enter from a feed inlet of the push rod, washing water enters from a washing water port of the push rod, and a material channel and a washing water channel are arranged in the push rod area where the rotary drum is located; the material enters the inside of the rotary drum through the material channel, and the washing water enters the inside of the rotary drum through the washing water channel.
The invention has the advantages and characteristics that: due to the adoption of a multi-point supporting structure and a unique feeding mode, the rotary drum has the advantages of large diameter, high rotating speed, long filtering area, multiple rotary drum stages, difficulty in vibration, large separation factor, prolonged filtering time of materials due to the increase of the length of the filtering area, low water content of filter residues, small washing water equivalent, large production capacity, capability of large scale, safety and stability, low power consumption per ton of products, and capability of providing guarantee for energy conservation, consumption reduction, emission reduction and environmental protection.
Drawings
FIG. 1 is a schematic view of the overall structure of the preferred embodiment of the present invention (pusher reciprocating, drum not reciprocating);
FIG. 2 is a schematic view of the overall structure of another preferred embodiment of the present invention (inner first layer drum reciprocating, pusher not reciprocating);
FIG. 3 is a schematic view of the overall structure of another preferred embodiment of the present invention (inner second layer drum, pusher reciprocating, other layer drums not reciprocating);
FIG. 4 is a schematic view of the overall structure of another preferred embodiment of the present invention (pusher reciprocating, drum not reciprocating);
FIG. 5 is a schematic view of the overall structure of another preferred embodiment of the present invention (the pusher does not reciprocate, the inner first layer drum reciprocates);
FIG. 6 is a schematic view of the overall structure of another preferred embodiment of the present invention (pusher reciprocating, second layer drum reciprocating, other layer drum not reciprocating);
FIG. 7 is a cross-sectional view of the drum of FIG. 1;
FIG. 8 is a schematic structural view of a drum device according to a preferred embodiment of the present invention (corresponding to the drum structure of FIG. 4, in which a part of the outer side wall of the drum is uncovered for easy representation of the inner structure);
FIG. 9 is a schematic structural view of a drum device according to another preferred embodiment of the present invention (corresponding to the drum structure of FIG. 1, in which a part of the outer side wall of the drum is uncovered for easy representation of the inner structure);
fig. 10 is a schematic perspective view of the axial discharge end of the drum device according to the preferred embodiment of the present invention (in the case that the drum reinforcing structures are arranged in a row in the axial direction in the drum).
Description of the drawings: the arrows in the figure represent the movement path of the material or the washing water.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
Example 1:
referring to fig. 1, a piston pusher centrifuge includes a main shaft 1, a push rod 2, a drum 3 with an open end and a perforated side wall, a pusher 4, a distributor 5, a driving mechanism 6, a drum reinforcing structure 7, a main shaft supporting structure 8, a sleeve 9, and a casing 10 disposed outside the drum 3, wherein a filtrate outlet 101 and a residue outlet 102 are disposed at the lower end of the casing 10;
the main shaft supporting structure 8 comprises a left supporting structure 81 and a right supporting structure 82 which are respectively arranged at two sides of the rotary drum; the drum bottom 31 of the drum 3 is fixedly arranged on the main shaft 1 or the push rod 2, the drum reinforcing structures 7 are uniformly distributed in the circumferential direction of the sleeve 9, one end of each drum reinforcing structure 7 is fixed on the sleeve 9, and the other end of each drum reinforcing structure 7 is fixed on the drum wall 32 of the drum 3;
the push rod 2 is of a hollow tubular structure, the left end of the push rod 2 is a feeding inlet 21, and the right end of the push rod 2 is a washing water inlet 22;
the main shaft 1 and the push rod 2 are driven to rotate by a driving mechanism 6; the push rod 2 is driven by a driving mechanism 6 to do axial reciprocating motion; the main shaft 1 is of a hollow tubular structure, and the push rod 2 is arranged inside the main shaft 1; the drum wall 32 of the drum 3 is provided with an opening as a filtrate channel; the material pushing device 4 is fixedly arranged at the left end of the main shaft 1 or the push rod 2; the distributor 5 is arranged on the right side of the pusher 4, and a gap between the distributor and the pusher is used as a material channel; the sleeve 9 is fixedly sleeved outside the main shaft 1 or the push rod 2;
a material channel 23 (a structure form is a through hole) communicated with an inner pipeline of the push rod is arranged on the main shaft 1 and/or the push rod 2 between the material pusher 4 and the distributor 5, and the material enters a gap between the material pusher 4 and the distributor 5 from the material channel and then enters the rotary drum; the middle parts of the main shaft 1, the push rod 2 and the sleeve 9 are provided with a washing water channel 24 (the structure form is a through hole) communicated with the interior of the push rod, washing water enters the interior of the rotary drum from the washing water channel, and a partition plate 25 used for separating the material channel 21 and the washing water channel 22 is arranged in the push rod.
Specifically, the drum reinforcing structure 7 is composed of one or more of plates, columns, pipes, hollow shafts and fasteners which are uniformly distributed along the circumferential direction of the drum. The reinforcing structure 7 and the distributor 5 are integrally connected (non-integrally connected structure is also possible) in view of ease of processing. The drum reinforcing structures 7 are distributed in the drum along the axial direction, and the number of the drum reinforcing structures can be one, and the drum reinforcing structures are positioned between the axial feeding end and the axial discharging end of the drum wall 32, the axial length of the drum reinforcing structures is equal to or less than the length of a drum wall filtering area, and the drum reinforcing structures become a continuous supporting structure (see fig. 1 and 4);
example 2:
the difference from the embodiment 1 is that the number of the drum reinforcing structures 7 distributed in the axial direction in the drum can be two rows (see fig. 2, fig. 3 and fig. 5), which are respectively located at the axial feeding end and the axial discharging end of the drum wall 32 and become a simple supporting beam supporting structure supported by double supporting points; there may be more than two rows (see fig. 6), each located between the axial feed and discharge ends of the drum wall 32, to form a multi-pivot support structure.
Example 3:
the difference from embodiment 1 is that the material channel 23 or the washing water channel 24 is in other structural forms such as a circular seam on the push rod 2, and two ends of the circular seam are connected by the connecting structure 11, and the torque of the driving mechanism is transmitted through the connecting structure 11 (see the area with the connecting structure 11 in fig. 2, 3, 4, 5, 6, and 9). The connecting structure 11 may be a combination of one or more of a plate, a post, a tube, and a fastener (e.g., a screw, a bolt), or a combination of one or more of a plurality of types of plates, posts, and tubes and a fastener (e.g., a structure similar to a shaft coupling).
Example 4:
the difference from the embodiment 1 is that, referring to fig. 2 to 6, the drum 3 is a single-stage drum or a double-stage drum or a multi-stage drum; the rotary drum and the rotary drum, the rotary drum and the pusher, the rotary drum and the feeding distributor, the pusher and the feeding distributor, the rotary drum and the main shaft and the rotary drum and the push rod are connected through a connecting structure 11 to transmit power to rotate or rotate and reciprocate.
In order to show the structure more clearly, fig. 8, 9 and 10 show the structure of the drum (only the drum structure in fig. 1 and 4 is taken as an example, fig. 8 corresponds to the drum in fig. 1, fig. 9 corresponds to the drum in fig. 4)
According to the feeding method of the piston pusher centrifuge, the push rod 2 is designed into a hollow tubular structure with two open ends and penetrates through the rotary drum 3, materials enter from the feeding hole 21 of the push rod 2, washing water enters from the washing water hole of the push rod 2, and a material channel 23 and a washing water channel 24 are arranged in the area of the push rod 2 where the rotary drum 3 is located; the material enters the interior of the rotary drum through the material channel 23, and the washing water enters the interior of the rotary drum through the washing water channel 24. Washing water enters the rotary drum 3 from the washing water channel 24, the rotary drum 3 rotates under the action of the driving mechanism 6, materials are dried under the action of centrifugal force, filtrate is separated out from the open holes of the rotary drum wall 32, filter residues are left on the side wall of the rotary drum wall 32 to form a barrel-shaped filter cake 12, and the filter cake is pushed out of the open end of the rotary drum 3 by a material pusher 4 or the rotary drum 3 which reciprocates left and right (the displacement of the left and right reciprocating motion is limited by the unclosed material channel or the washing water channel).
The support structure of the spindle is changed from a single-side support structure into a double-side or multi-side support structure, and the cantilever beam support structure supported by a single pivot at the axial feed end of the rotary drum wall is changed into a simple beam support structure supported by double pivots at the axial feed end and the axial discharge end of the rotary drum wall, or is changed into a support structure with multiple pivots between the axial feed end and the axial discharge end of the rotary drum wall, or is changed into a plate support structure with the length approximately equal to the length of a filter area of the rotary drum wall; the strength of the drum wall is greatly enhanced, so that the drum has large diameter, high rotating speed, long filtering area, multiple stages of the drum, difficult vibration, large separation factor, increased length of the filtering area, prolonged filtering time of materials, low water content of filter residues, small washing water equivalent, large production capacity and large scale.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. The present invention is not limited to the above-described embodiments, and the above-described embodiments and the description are only for illustrating the structural relationship and the principle of the present invention, and the present invention may have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A piston pusher centrifuge comprises a main shaft (1), a push rod (2), a rotary drum (3) with an open end and a hole on the side wall, a pusher (4), a distributor (5), a driving mechanism (6), a rotary drum reinforcing structure (7), a main shaft supporting structure (8), a sleeve (9) and a casing (10) arranged outside the rotary drum (3), wherein the lower end of the casing (10) is provided with a filtrate outlet (101) and a filter residue outlet (102); the method is characterized in that:
the main shaft supporting structure (8) comprises a left supporting structure (81) and a right supporting structure (82) which are respectively arranged on two sides of the rotary drum; a drum bottom (31) of the rotary drum (3) is fixedly arranged on the main shaft (1) or the push rod (2), the rotary drum reinforcing structures (7) are uniformly distributed in the circumferential direction of the sleeve (9), one end of each rotary drum reinforcing structure (7) is fixed on the sleeve (9), and the other end of each rotary drum reinforcing structure is fixed on a drum wall (32) of the rotary drum (3); the push rod (2) is of a hollow tubular structure, the left end of the push rod (2) is a feeding inlet (21), and the right end of the push rod (2) is a washing water inlet (22);
the main shaft (1) and the push rod (2) are driven to rotate by a driving mechanism (6); the push rod (2) is driven by the driving mechanism (6) to do axial reciprocating motion; the main shaft (1) is of a hollow tubular structure, and the push rod (2) is arranged inside the main shaft (1); an opening hole is formed in a drum wall (32) of the drum (3) and is used as a filtrate channel; the material pushing device (4) is fixedly arranged at the left end of the main shaft (1) or the push rod (2); the distributor (5) is arranged on the right side of the pusher (4), and a gap between the distributor and the pusher is used as a material channel; the sleeve (9) is fixedly sleeved outside the main shaft (1) or the push rod (2);
a material channel (23) communicated with an inner pipeline of the push rod is arranged on the main shaft (1) and/or the push rod (2) between the material pusher (4) and the distributor (5), and the material enters a gap between the material pusher (4) and the distributor (5) from the material channel and then enters the rotary drum; the middle parts of the main shaft (1), the push rod (2) and the sleeve (9) are provided with a washing water channel (24) communicated with the inside of the push rod, washing water enters the inside of the rotary drum from the washing water channel, and a partition plate (25) used for separating the material channel (21) and the washing water channel (22) is arranged in the push rod.
2. The pusher centrifuge of claim 1, wherein: the drum reinforcing structure (7) is composed of one or more of plates, columns, pipes, hollow shafts and fasteners which are uniformly distributed along the circumferential direction of the drum.
3. The pusher centrifuge of claim 1, wherein: the drum reinforcing structures (7) are distributed in the drum along the axial direction, can be in a row, are positioned between the axial feeding end and the axial discharging end of the drum wall (32), have the axial length equal to or less than the length of the drum wall filtering area, and form a continuous supporting structure; can be two lines which are respectively positioned at the axial feeding end and the axial discharging end of the drum wall (32) to form a simple supporting beam supporting structure supported by double supporting points; can be more than two columns which are respectively positioned between the axial feeding end and the axial discharging end of the drum wall (32) and become a supporting structure with multiple supporting points.
4. The pusher centrifuge of claim 1, wherein: the rotary drum (3) is a single-stage rotary drum or a double-stage rotary drum or a multi-stage rotary drum; the rotary drum and the rotary drum, the rotary drum and the pusher, the rotary drum and the feeding distributor, the pusher and the feeding distributor, the rotary drum and the main shaft and the rotary drum and the push rod are connected through a connecting structure (11) to transmit power to rotate or rotate and reciprocate.
5. The pusher centrifuge of claim 4, wherein: the connecting structure (11) is a combination of one or more of a plate, a column, a pipe and a fastener, or a combination of one or more of a plurality of the plates, the columns and the pipe and the fastener.
6. The pusher centrifuge of claim 1, wherein: the material channel (23) or the washing water channel (24) is in a hole or circular seam form, and when the channel is a hole, the shaft is in a continuous form; when the channel is a circular seam, the shaft is in a disconnected form, and two ends of the circular seam are connected by adopting a connecting structure (11).
7. The method of feeding in a pusher centrifuge of claim 1, wherein: the push rod (2) is designed into a hollow tubular structure with two open ends and penetrates through the rotary drum (3), materials enter from a feed inlet (21) of the push rod (2), washing water enters from a washing water port of the push rod (2), and a material channel (23) and a washing water channel (24) are arranged in the area of the push rod (2) where the rotary drum (3) is located; the material enters the inside of the rotary drum through the material channel (23), and the washing water enters the inside of the rotary drum through the washing water channel (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911288905.2A CN111054528B (en) | 2019-12-12 | 2019-12-12 | Piston pushing centrifugal machine and feeding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911288905.2A CN111054528B (en) | 2019-12-12 | 2019-12-12 | Piston pushing centrifugal machine and feeding method thereof |
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| CN111054528A true CN111054528A (en) | 2020-04-24 |
| CN111054528B CN111054528B (en) | 2024-02-02 |
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| JPH02284656A (en) * | 1989-04-25 | 1990-11-22 | Mitsubishi Kakoki Kaisha Ltd | Decanter and washing method thereof |
| GB9611209D0 (en) * | 1996-05-29 | 1996-07-31 | Ecc Int Ltd | Decanter centrifuge |
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| CN214599780U (en) * | 2021-03-18 | 2021-11-05 | 南京新筛分科技实业有限公司 | Novel anti-fracture structure for feed pipe of horizontal screw centrifuge |
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| CN205236193U (en) * | 2015-12-14 | 2016-05-18 | 昆明青上化工有限公司 | Doublestage piston pushing centrifugal machine |
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| CN109499782A (en) * | 2018-12-26 | 2019-03-22 | 湘潭惠博离心机有限公司 | A kind of three-level piston push centrifuge drum device |
| CN211887455U (en) * | 2019-12-12 | 2020-11-10 | 武汉德泽环保科技有限公司 | Piston pushing centrifugal machine |
| CN214599780U (en) * | 2021-03-18 | 2021-11-05 | 南京新筛分科技实业有限公司 | Novel anti-fracture structure for feed pipe of horizontal screw centrifuge |
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