CN210935415U - Horizontal screw discharging sedimentation centrifuge for end flaring of screw conveyor - Google Patents
Horizontal screw discharging sedimentation centrifuge for end flaring of screw conveyor Download PDFInfo
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- CN210935415U CN210935415U CN201921610917.8U CN201921610917U CN210935415U CN 210935415 U CN210935415 U CN 210935415U CN 201921610917 U CN201921610917 U CN 201921610917U CN 210935415 U CN210935415 U CN 210935415U
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Abstract
The utility model relates to a horizontal screw discharge sedimentary centrifuge for the flaring at the tail end of a screw conveyor, which comprises a screw conveyor, a rotary drum, a frame, a left bearing seat, a right bearing seat, a differential mechanism, a light phase discharge end flange, a heavy phase discharge end flange, a feed pipe and a motor; the rotary drum is a cylindrical barrel; the spiral core tube comprises a cylindrical core tube and an inverted conical core tube from left to right, the cylindrical core tube is a cylindrical barrel, and the inverted conical core tube is a right-expanded round-table-shaped barrel. Under the technical scheme, a conical rotary drum is omitted and only a cylindrical rotary drum is used, so that the processing technology is simplified; after the material enters the drying section of the conical core tube, the inverted conical core tube is a truncated cone-shaped cylinder expanding rightwards, so that the material is extruded and dried; and the round platform-shaped cylinder body of the inverted conical core tube expanding rightwards blocks the light phase layer from passing through, so that the discharged materials are drier.
Description
Technical Field
The utility model belongs to the technical field of mechanical separation, concretely relates to spiral shell sedimentation centrifuge of unloading crouches of terminal flaring of auger delivery ware.
Background
The horizontal spiral centrifuge is a settling equipment with horizontal spiral discharge and continuous operation, and is characterized by that it utilizes the high-speed rotation of rotating body (rotating drum and spiral) to produce strong centrifugal force to make the light phase and heavy phase quickly layered, and utilizes the spiral conveyer to push out the heavy phase from heavy phase discharge outlet of horizontal spiral centrifuge, and the light phase is discharged from light phase discharge outlet of centrifuge so as to attain the effect of separating light phase from heavy phase.
A horizontal spiral discharge sedimentary centrifuge comprises a rotary drum, a spiral conveyor, a frame, a left bearing seat, a right bearing seat, a differential mechanism, a light phase discharge end flange (also called a large end cover), a heavy phase discharge end flange (also called a small end cover), a feeding pipe and a motor; the drum comprises a cylindrical drum and a conical drum, when the centrifuge is used, materials enter a separation section of the centrifuge, the drum of the separation section is the cylindrical drum and the conical drum, a heavy phase layer and a light phase layer are formed after the materials of the separation section are separated, the heavy phase materials are thrown to the inner wall of the cylindrical drum to form the heavy phase layer, and then the heavy phase layers are pushed to a drying section by a spiral conveyor, the drum of the drying section is the conical drum, the diameter of the drum is gradually reduced, so that the materials entering the drying section are continuously extruded and dried and are pushed to a heavy phase outlet at the small end of the drum; and the light phase layer in the centrifuge is extruded by the heavy phase layer and flows to the light phase outlet at the large end of the centrifuge drum in the opposite direction.
Chinese patent document (publication No. CN 106694241B) discloses a horizontal spiral discharge settling centrifuge, which comprises a rotary drum and a spiral pusher, wherein the spiral pusher comprises a core shaft and a pushing sheet, the core shaft is provided with a feeding hole, the rotary drum is provided with a liquid outlet and a slag outlet, a suspension is uniformly pushed into the rotary drum through a spiral conveying sheet, the contact area between the pushing sheet and the inner wall of the rotary drum is increased through a scraping sheet, the pushing effect of solid-phase particles is improved, in addition, the scraping sheet can extrude a solid phase in the pushing process, and the liquid content of the solid phase is favorably reduced.
In the prior art, the material in the heavy phase layer is extruded by the shrinkage of the conical drum, part of the light phase layer is extruded by the material and flows to the light phase end, and part of the light phase layer is discharged along with the heavy phase layer during the extrusion of the material, so the light phase content of the discharged heavy phase material is still higher.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the horizontal screw discharging settling centrifuge with flared end of screw conveyer has the light phase layer incapable of flowing to the heavy phase outlet and capable of flowing to the light phase outlet in the opposite direction.
The technical scheme adopted by the invention for solving the technical problems is as follows: a horizontal screw discharge sedimentation centrifuge with a flaring at the tail end of a screw conveyor comprises the screw conveyor, a rotary drum, a frame, a left bearing seat, a right bearing seat, a differential mechanism, a light phase discharge end flange, a heavy phase discharge end flange, a feeding pipe and a motor; the drum with the screw conveyor coaxially arranged inside is arranged on the frame, a light phase discharge end flange, a left bearing seat and a differential are sequentially arranged on the left side of the drum from right to left, a heavy phase discharge end flange and a right bearing seat are sequentially arranged on the right side of the drum from left to right, and the feeding pipe is arranged at one end close to the right bearing seat and communicated with the screw conveyor; the spiral conveyor comprises a spiral core pipe and spiral blades, wherein the axial lead of the spiral blades is superposed with the axial lead L of the spiral core pipe, and the spiral blades are spirally wound and connected on the outer circumference of the spiral core pipe;
the spiral core tube comprises a cylindrical core tube and an inverted conical core tube from left to right, the cylindrical core tube is a cylindrical barrel, and the inverted conical core tube is a right-expanded round-table-shaped barrel.
Further, the rotary drum is a cylindrical barrel.
Furthermore, the small end of the inverted conical core tube of the spiral core tube is coaxially connected with the cylindrical core tube, the diameter of the excircle of the small end of the inverted conical core tube is consistent with that of the excircle of the cylindrical core tube, and the conical angle α of the inverted conical core tube is 7-10 degrees, preferably 8 degrees.
Further, an outer circumference generatrix L1 of the helical blade is parallel to an inner circumference generatrix L3 of the rotary drum; the inner circumference generatrix L2 of the helical blade is coincident with the outer circumference generatrix of the helical core tube;
an annular cavity is formed between the rotary drum and the spiral core tube, and the spiral blades are positioned in the annular cavity.
Furthermore, the helical blades comprise a cylindrical section helical blade and an inverted conical section helical blade which are connected end to end from left to right and have the same axial lead L, and the cylindrical section helical blade is wound and connected on the outer circumference of the cylindrical core tube; the inverted cone section helical blade is wound and connected on the outer circumference of the inverted cone core tube;
the cylindrical section helical blade is a single-end helical blade with equal pitch; the inverted cone section helical blade is 2 or 3 helical blades with equal pitch, and the pitch of each inverted cone section helical blade is consistent with that of the cylindrical section helical blade.
The cone angle α of the inverted cone core tube should be selected according to different materials to effectively extrude the heavy-phase materials under the premise of ensuring that the annular cavity is not blocked.
Furthermore, the drum comprises a cylindrical drum and an inverted cone drum from left to right, the cylindrical drum is a cylindrical barrel, the inverted cone drum is a truncated cone-shaped barrel expanding towards right, and the small end of the inverted cone drum is coaxially connected with the cylindrical drum.
Further, a cylindrical annular cavity is formed between the cylindrical drum and the cylindrical core tube, and a conical annular cavity is formed between the inverted conical drum and the inverted conical core tube; the sectional area of the section of the annular cavity, which is vertical to the axial lead L, is continuously reduced rightward. The annular cavity particularly satisfies the following conditions: the sectional area of any section of the conical annular cavity, which is vertical to the axis L, is smaller than that of any section of the cylindrical annular cavity, which is vertical to the axis L, and the sectional area is continuously reduced towards the right.
Furthermore, the diameter of the excircle of the small end of the inverted cone core tube of the spiral core tube is consistent with that of the excircle of the cylindrical core tube, the cone angle α of the inverted cone core tube is 7-10 degrees, preferably 8 degrees, the diameter of the excircle of the small end of the inverted cone rotary drum of the rotary drum is consistent with that of the cylindrical rotary drum, the wall thickness of the inverted cone rotary drum is consistent with that of the cylindrical rotary drum, and the cone angle β of the inverted cone rotary drum is 1-3 degrees, preferably 2 degrees.
The taper angle α of the inverted cone core tube and the taper angle β of the inverted cone rotary drum are selected according to different materials, so that the heavy-phase materials are effectively extruded on the premise of ensuring that the annular cavity is not blocked.
Furthermore, the helical blades comprise a cylindrical section helical blade and an inverted conical section helical blade which are connected end to end from left to right and have the same axial lead L, and the cylindrical section helical blade is wound and connected on the outer circumference of the cylindrical core tube; the inverted cone section helical blade is wound and connected on the outer circumference of the inverted cone core tube;
an outer circumference generating line L4 of the cylindrical section helical blade connected with the cylindrical core tube on the helical blade is parallel to an inner circumference generating line L6 of the cylindrical rotary drum; an outer circumference generatrix L5 of the inverted cone section helical blade connected with the inverted cone core tube on the helical blade is parallel to an inner circumference generatrix L7 of the inverted cone rotary drum; the inner circumference generatrix L2 of the helical blade is coincident with the outer circumference generatrix of the helical core tube;
the cylindrical section helical blade is a single-end helical blade with equal pitch; the inverted cone section helical blade is 2 or 3 helical blades with equal pitch, and the pitch of each inverted cone section helical blade is consistent with that of the cylindrical section helical blade.
The invention has the beneficial effects that:
① when the drum is cylindrical, it has simplified process because the drum is not conical drum but only cylindrical drum, and after the material enters the drying section of the conical core tube, the material is extruded to form light phase because the inverted conical core tube is a truncated cone expanding to the right, and the truncated cone of the inverted conical core tube expanding to the right blocks the light phase layer from passing through, so the light phase content in the discharged heavy phase material is lower.
② when the drum comprises a cylindrical drum and an inverted cone drum from left to right, after the material enters the drying section of the cone core tube, the inverted cone drum is a round-table-shaped cylinder expanding to the right, so that the centrifugal force on the material is continuously increased, and the material is acted by the reaction force to the right, thereby avoiding the material accumulating at the feeding end of the inverted cone drum, reducing the load of the helical blades, reducing the abrasion of the helical blades, extruding the material to extrude the light phase because the conical annular cavity is continuously contracted to the right, and the round-table-shaped cylinder of the inverted cone core tube expanding to the right blocks the light phase layer from passing through, so that the light phase rate contained in the discharged heavy phase material is lower.
Drawings
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of embodiment 1 of a first embodiment of the present invention;
fig. 2 is a schematic structural view of embodiment 2 of a second embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the screw conveyor of FIGS. 1 and 2;
fig. 4 is a schematic structural view of the drum in fig. 2.
The left-right direction in the specification coincides with the left-right direction in fig. 1 to 4.
The reference numbers in the above figures are as follows:
1 is a screw conveyer, 11 is a screw core pipe, 111 is a cylindrical core pipe, 112 is an inverted cone core pipe, 12 is a helical blade, 121 is a cylindrical section helical blade, 122 is an inverted cone section helical blade, 2 is a rotary drum, 21 is a cylindrical rotary drum, 22 is an inverted cone rotary drum, 23 is an annular cavity, 231 is a cylindrical annular cavity, 232 is a conical annular cavity, 3 is a frame, 4 is a left bearing seat, 5 is a right bearing seat, 6 is a differential mechanism, 7 is a light phase discharge end flange, 8 is a heavy phase discharge end flange, and 9 is a feeding pipe;
l is an axial lead, L1 is an outer circumferential generatrix of the helical blade, L2 is an inner circumferential generatrix of the helical blade, L3 is an inner circumferential generatrix of the rotary drum, L4 is an outer circumferential generatrix of the helical blade with a cylindrical section, L5 is an outer circumferential generatrix of the helical blade with an inverted conical section, L6 is an inner circumferential generatrix of the cylindrical rotary drum, L7 is an inner circumferential generatrix of the inverted conical rotary drum, L8 is the length of an inverted conical core tube, L9 is the length of the inverted conical rotary drum, α is a conical angle of the inverted conical core tube, and β is a conical angle of the inverted conical rotary drum.
Detailed Description
Example 1:
referring to fig. 1 and 3, a horizontal screw discharge settling centrifuge with a flaring at the tail end of a screw conveyor comprises a screw conveyor 1, a rotary drum 2, a frame 3, a left bearing seat 4, a right bearing seat 5, a differential mechanism 6, a light phase discharge end flange 7, a heavy phase discharge end flange 8, a feeding pipe 9 and a motor; the drum 2 with the screw conveyor 1 coaxially arranged inside is arranged on a frame 3, a light phase discharge end flange 7, a left bearing seat 4 and a differential mechanism 6 are sequentially arranged on the left side of the drum 2 from right to left, a heavy phase discharge end flange 8 and a right bearing seat 5 are sequentially arranged on the right side of the drum 2 from left to right, and a feeding pipe 9 is arranged at one end close to the right bearing seat 5 and communicated with the screw conveyor 2; the screw conveyor 1 includes a spiral core pipe 11 and a spiral blade 12, the axis of the spiral blade 12 coincides with the axis L of the spiral core pipe 11, and the spiral blade 12 is spirally wound around the outer circumference of the spiral core pipe 11.
The rotary drum 2 is a cylindrical barrel; the spiral core tube 11 includes a cylindrical core tube 111 and an inverted conical core tube 112 from left to right, the cylindrical core tube 111 is a cylindrical barrel, and the inverted conical core tube 112 is a right-expanded circular truncated cone-shaped barrel.
The small end of the inverted conical core tube 112 of the spiral core tube 11 is coaxially connected with the cylindrical core tube 111, the excircle diameter of the small end of the inverted conical core tube 112 is consistent with that of the cylindrical core tube 111, and the conical angle α of the inverted conical core tube 112 is 8 degrees.
The outer circumference generatrix L1 of the helical blade 12 is parallel to the inner circumference generatrix L3 of the rotary drum 2; the inner circumferential generatrix L2 of the helical blade 12 coincides with the outer circumferential generatrix of the helical mandrel 11.
An annular cavity 23 is formed between the rotary drum 2 and the spiral core tube 11, and the spiral blades 12 are positioned in the annular cavity 23.
The helical blade 12 comprises a cylindrical helical blade 121 and an inverted conical helical blade 122 which are connected end to end and have the same axial lead L from left to right, and the cylindrical helical blade 121 is wound and connected on the outer circumference of the cylindrical core tube 111; an inverted conical section helical blade 122 is wound around the outer circumference of the inverted conical core tube 112.
The cylindrical section helical blade 121 is a single-end helical blade with equal pitch; the inverted cone helical blade 122 is a 2-head helical blade with equal pitch, and the pitch of each inverted cone helical blade 122 is consistent with that of the cylindrical helical blade 121.
The inner diameter of the drum 2 of this embodiment is 450mm, the outer diameter of the cylindrical core tube 111 is 210mm, and the length L8 of the inverted conical core tube 112 is 660 mm.
Application example 1:
in the working state of the centrifuge, materials enter the inverted cone core tube 11 of the inverted cone core tube of the spiral core tube from the inverted cone core tube 9 of the feeding tube, the materials are thrown into a cavity between the cylindrical core tube 111 and the rotary drum 2 for separation under the action of centrifugal force, and after the materials enter a drying section of the inverted cone core tube 112 under the pushing of the spiral conveyor 1, the heavy-phase materials are extruded by the helical blades 12, the inner wall of the rotary drum 2 and the outer wall of the circular truncated cone-shaped cylinder of the inverted cone core tube 112 to extrude light phases because the inverted cone core tube 112 is a circular truncated cone-shaped cylinder expanding rightwards; the cone-shaped cylinder of the inverted conical core tube 112 expanding rightwards blocks the light phase layer from passing through, so that the light phase content of the discharged heavy phase material is lower; the extruded material of the heavy phase layer is discharged out of the centrifuge body from a heavy phase discharge port on the right side of the centrifuge; the light phase material is discharged from the light phase outlet on the left side of the centrifuge.
Example 2:
referring to fig. 2, 3 and 4, a horizontal screw discharging and settling centrifuge with a flaring end of a screw conveyor comprises a screw conveyor 1, a rotary drum 2, a frame 3, a left bearing seat 4, a right bearing seat 5, a differential mechanism 6, a light phase discharging end flange 7, a heavy phase discharging end flange 8, a feeding pipe 9 and a motor; the drum 2 with the screw conveyor 1 coaxially arranged inside is arranged on a frame 3, a light phase discharge end flange 7, a left bearing seat 4 and a differential mechanism 6 are sequentially arranged on the left side of the drum 2 from right to left, a heavy phase discharge end flange 8 and a right bearing seat 5 are sequentially arranged on the right side of the drum 2 from left to right, and a feeding pipe 9 is arranged at one end close to the right bearing seat 5 and communicated with the screw conveyor 2; the screw conveyor 1 comprises a spiral core tube 11 and a spiral blade 12 from left to right, wherein the axis of the spiral blade 12 is coincident with the axis L of the spiral core tube 11, and the spiral blade 12 is spirally wound on the outer circumference of the spiral core tube 11.
The drum 2 comprises a cylindrical drum 21 and an inverted conical drum 22 from left to right, the cylindrical drum 21 is a cylindrical barrel, the inverted conical drum 22 is a truncated cone-shaped barrel expanded to the right, and the small end of the inverted conical drum 22 is coaxially connected with the cylindrical drum 21; the spiral core tube 11 comprises a cylindrical core tube 111 and an inverted conical core tube 112, the cylindrical core tube 111 is a cylindrical barrel, the inverted conical core tube 112 is a truncated cone-shaped barrel expanding rightwards, and the small end of the inverted conical core tube 112 is coaxially connected with the cylindrical core tube 111.
An annular cavity 23 is formed between the rotary drum 2 and the spiral core tube 11, and the spiral blades 12 are positioned in the annular cavity 23; a cylindrical annular cavity 231 is formed between the cylindrical rotary drum 21 and the cylindrical core tube 111, and a conical annular cavity 232 is formed between the inverted conical rotary drum 22 and the inverted conical core tube 112; the sectional area of any one of the conical annular cavities 232 of the annular cavity 23 perpendicular to the axis L is smaller than that of any one of the cylindrical annular cavities 231 perpendicular to the axis L, and decreases rightward.
The outer circle diameter of the small end of an inverted cone core tube 112 of the spiral core tube 11 is consistent with the outer circle diameter of a cylindrical core tube 111, the cone angle α of the inverted cone core tube 112 is 8 degrees, the outer circle diameter of the small end of an inverted cone rotary drum 22 of the rotary drum 2 is consistent with the outer circle diameter of the cylindrical rotary drum 21, the wall thickness of the inverted cone rotary drum 22 is consistent with the wall thickness of the cylindrical rotary drum 21, and the cone angle β of the inverted cone rotary drum 22 is 2 degrees.
The helical blade 12 comprises a cylindrical helical blade 121 and an inverted conical helical blade 122 which are connected end to end and have the same axial lead L from left to right, and the cylindrical helical blade 121 is wound and connected on the outer circumference of the cylindrical core tube 111; an inverted conical section helical blade 122 is wound around the outer circumference of the inverted conical core tube 112.
An outer circumferential generatrix L4 of the cylindrical helical blade 121 on the helical blade 12, which is connected with the cylindrical core tube 111, is parallel to an inner circumferential generatrix L6 of the cylindrical rotary drum 21; the outer circumference generatrix L5 of the inverted cone section helical blade 122 on the helical blade 12 connected with the inverted cone core tube 112 is parallel to the inner circumference generatrix L7 of the inverted cone rotary drum 22; the inner circumferential generatrix L2 of the helical blade 12 coincides with the outer circumferential generatrix of the helical mandrel 11.
The cylindrical section helical blade 121 is a single-end helical blade with equal pitch; the inverted cone helical blade 122 is a 3-head helical blade with equal pitch, and the pitch of each inverted cone helical blade 122 is consistent with that of the cylindrical helical blade 121.
In this embodiment, the inner diameter of drum 2 is 450mm, the outer diameter of cylindrical core tube 111 is 210mm, the length L8 of inverted conical core tube 112 is 660mm, and the length L9 of inverted conical drum 22 is equal to the length L8 of inverted conical core tube 112.
Application example 2:
in the working state of the centrifuge, the material enters the spiral core tube 11 from the feeding tube 9, the material is thrown into the cavity between the cylindrical core tube 111 and the rotary drum 2 for separation under the action of centrifugal force, after the material is pushed by the spiral conveyor 1 to enter the drying section of the inverted conical core tube 112, the inverted conical rotary drum 22 is a round-table-shaped cylinder expanding rightwards, the centrifugal force borne by the material is continuously increased, and the heavy-phase material is also subjected to the action of the component force of the reaction force rightwards, so that the heavy-phase material is accelerated to move rightwards, the accumulation of the heavy-phase material at the feeding end of the inverted conical rotary drum 22 is avoided, the load of the spiral blades 12 is reduced, and the abrasion of the spiral blades 12 is reduced; the heavy phase material is extruded to extrude the light phase because the conical annular cavity 232 is required to be continuously contracted rightwards; the circular truncated cone-shaped cylinder of the inverted conical core tube 112 expanding rightwards blocks the light phase layer from passing through, so that the light phase content in the discharged heavy phase is lower; the extruded material of the heavy phase layer is discharged out of the centrifuge body from a heavy phase discharge port on the right side of the centrifuge; the light phase material is discharged from the light phase outlet on the left side of the centrifuge.
In light of the foregoing description of the preferred embodiments of the present invention, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A horizontal screw discharge sedimentation centrifuge with a flaring at the tail end of a screw conveyor comprises the screw conveyor (1), a rotary drum (2), a frame (3), a left bearing seat (4), a right bearing seat (5), a differential (6), a light phase discharge end flange (7), a heavy phase discharge end flange (8), a feeding pipe (9) and a motor; a rotary drum (2) with a screw conveyor (1) coaxially arranged inside is arranged on a rack (3), a light phase discharge end flange (7), a left bearing seat (4) and a differential (6) are sequentially arranged on the left side of the rotary drum (2) from right to left, a heavy phase discharge end flange (8) and a right bearing seat (5) are sequentially arranged on the right side of the rotary drum (2) from left to right, and a feeding pipe (9) is arranged at one end close to the right bearing seat (5) and communicated with the screw conveyor (1); the spiral conveyor (1) comprises a spiral core pipe (11) and spiral blades (12), wherein the axial lead of the spiral blades (12) is superposed with the axial lead L of the spiral core pipe (11), and the spiral blades (12) are spirally wound and connected on the outer circumference of the spiral core pipe (11);
the method is characterized in that: the spiral core tube (11) comprises a cylindrical core tube (111) and an inverted conical core tube (112) from left to right, the cylindrical core tube (111) is a cylindrical barrel, and the inverted conical core tube (112) is a right-expanding round-table-shaped barrel.
2. A screw conveyor end flaring horizontal screw discharge decanter centrifuge as claimed in claim 1, further characterized by: the rotary drum (2) is a cylindrical barrel.
3. A screw conveyor end flaring horizontal screw discharge decanter centrifuge as claimed in claim 1, further characterized by: the drum (2) comprises a cylindrical drum (21) and an inverted cone drum (22) from left to right, the cylindrical drum (21) is a cylindrical barrel, the inverted cone drum (22) is a round-table-shaped barrel which expands rightwards, and the small end of the inverted cone drum (22) is coaxially connected with the cylindrical drum (21).
4. The horizontal screw discharge sedimentary centrifuge with the flared end of the screw conveyor is characterized in that the small end of an inverted conical core tube (112) of the spiral core tube (11) is coaxially connected with a cylindrical core tube (111), the excircle diameter of the small end of the inverted conical core tube (112) is consistent with that of the cylindrical core tube (111), and the cone angle α of the inverted conical core tube (112) is 7-10 degrees.
5. A screw conveyor end flaring horizontal screw discharge decanter centrifuge as claimed in claim 2, characterized in that: the outer circumference generatrix L1 of the helical blade (12) is parallel to the inner circumference generatrix L3 of the rotary drum (2); the inner circumference generatrix L2 of the helical blade (12) is coincident with the outer circumference generatrix of the helical core tube (11);
an annular cavity (23) is formed between the rotary drum (2) and the spiral core tube (11), and the spiral blades (12) are positioned in the annular cavity (23).
6. A screw conveyor end flaring horizontal screw discharge decanter centrifuge as claimed in claim 2, characterized in that: the helical blade (12) comprises a cylindrical section helical blade (121) and an inverted conical section helical blade (122) which are connected end to end from left to right and have the same axial line L, and the cylindrical section helical blade (121) is wound and connected on the outer circumference of the cylindrical core tube (111); the inverted cone section helical blade (122) is wound and connected on the outer circumference of the inverted cone core tube (112);
the cylindrical section helical blade (121) is a single-end helical blade with equal pitch; the inverted cone section helical blade (122) is a 2-head or 3-head helical blade with equal pitch, and the pitch of each inverted cone section helical blade (122) is consistent with that of the cylindrical section helical blade (121).
7. A screw conveyor end flaring horizontal screw discharge decanter centrifuge as claimed in claim 3, characterized in that: a cylindrical annular cavity (231) is formed between the cylindrical rotary drum (21) and the cylindrical core tube (111), and a conical annular cavity (232) is formed between the inverted conical rotary drum (22) and the inverted conical core tube (112); the sectional area of the section of the annular cavity (23) perpendicular to the axial lead L is reduced rightward.
8. The horizontal screw discharge sedimentary centrifuge with the flaring end of the screw conveyor is characterized in that the outer circle diameter of the small end of the inverted conical core tube (112) of the spiral core tube (11) is consistent with the outer circle diameter of the cylindrical core tube (111), the cone angle α of the inverted conical core tube (112) is 7-10 degrees, the outer circle diameter of the small end of the inverted conical rotary drum (22) of the rotary drum (2) is consistent with the outer circle diameter of the cylindrical rotary drum (21), the wall thickness of the inverted conical rotary drum (22) is consistent with the wall thickness of the cylindrical rotary drum (21), and the cone angle β of the inverted conical rotary drum (22) is 1-3 degrees.
9. A screw conveyor end flaring horizontal screw discharge decanter centrifuge as claimed in claim 3, characterized in that: the helical blade (12) comprises a cylindrical section helical blade (121) and an inverted conical section helical blade (122) which are connected end to end from left to right and have the same axial line L, and the cylindrical section helical blade (121) is wound and connected on the outer circumference of the cylindrical core tube (111); the inverted cone section helical blade (122) is wound and connected on the outer circumference of the inverted cone core tube (112);
an outer circumferential generatrix L4 of the cylindrical section helical blade (121) which is connected with the cylindrical core tube (111) on the helical blade (12) is parallel to an inner circumferential generatrix L6 of the cylindrical rotary drum (21); an outer circumferential generatrix L5 of an inverted cone section helical blade (122) which is arranged on the helical blade (12) and connected with the inverted cone core tube (112) is parallel to an inner circumferential generatrix L7 of the inverted cone rotary drum (22); the inner circumference generatrix L2 of the helical blade (12) is coincident with the outer circumference generatrix of the helical core tube (11);
the cylindrical section helical blade (121) is a single-end helical blade with equal pitch; the inverted cone section helical blade (122) is a 2-head or 3-head helical blade with equal pitch, and the pitch of each inverted cone section helical blade (122) is consistent with that of the cylindrical section helical blade (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610917.8U CN210935415U (en) | 2019-09-25 | 2019-09-25 | Horizontal screw discharging sedimentation centrifuge for end flaring of screw conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921610917.8U CN210935415U (en) | 2019-09-25 | 2019-09-25 | Horizontal screw discharging sedimentation centrifuge for end flaring of screw conveyor |
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| Publication Number | Publication Date |
|---|---|
| CN210935415U true CN210935415U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921610917.8U Active CN210935415U (en) | 2019-09-25 | 2019-09-25 | Horizontal screw discharging sedimentation centrifuge for end flaring of screw conveyor |
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| CN (1) | CN210935415U (en) |
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