CN218423407U

CN218423407U - Horizontal screw centrifuge for oxalate removal process

Info

Publication number: CN218423407U
Application number: CN202222445257.0U
Authority: CN
Inventors: 罗春
Original assignee: Hunan Nuolan Dier Environmental Protection Technology Co ltd
Current assignee: Hunan Nuolan Dier Environmental Protection Technology Co ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-02-03
Anticipated expiration: 2032-09-15

Abstract

The utility model discloses a spiral shell centrifuge crouches for technology is got rid of to oxalate belongs to spiral shell centrifuge technical field crouches, including frame and pre-storage water tank, the top of frame is provided with two support frames, two rotate between the support frame and be connected with the rotary drum, the inner chamber of rotary drum rotates and is connected with spiral conveying pole, the one end of spiral conveying pole extends to the outside and the fixed mounting of support frame has rotary joint, rotary joint's one end fixed mounting has three way connection valve, three way connection valve's one end fixedly connected with inlet pipe, the screw thread stopper is installed to the top screw thread of pre-storage water tank. The utility model discloses in, after to oxalate solution solid-liquid separation, from the inlet tube to the inner chamber of water storage tank in advance imports water to heat water through the electrothermal tube, hot water through water storage tank inner chamber in advance washs rotary drum and spiral conveying pole, guarantees the cleaning quality to this spiral shell centrifuge crouches.

Description

Horizontal screw centrifuge for oxalate removal process

Technical Field

The utility model relates to a spiral shell centrifuge technical field crouches, more specifically says, relates to a spiral shell centrifuge crouches for technology is got rid of to oxalate.

Background

In the Bayer process, organic matters entering the system along with ores circulate in the process along with the solution, and when the impurities pass through a high-pressure digester repeatedly, the impurities in the solution are gradually decomposed from high-molecular compounds into low-molecular compounds, and finally sodium oxalate, sodium carbonate and other low-molecular sodium salts are formed and accumulated in the process in a circulating way, so that the production of alumina and the quality of products are adversely affected. The presence of sodium oxalate leads to the following problems: increase alkali consumption, refine product, decompose foam, and have high alkali consumption. It is therefore necessary to remove sodium oxalate from bayer process liquors to reduce the risk of its production.

Through retrieval, the invention patent with publication number CN112299461A discloses a device and a process for removing oxalate from a sodium aluminate solution, which comprises an oxalate reaction growth system, a grading system and a solid-liquid separation system, wherein an oxalate growth agent, the sodium aluminate solution at an alumina production section and an oxalate inducer are added into a reaction tank together, and are stirred to separate out oxalate in large granular agglomerates so as to obtain reaction slurry; then pumping the reaction slurry into a grader for grading to obtain underflow and overflow; finally, the underflow and the overflow are respectively subjected to solid-liquid separation, and oxalate in the sodium aluminate solution can be removed. The process flow of the invention is short, economical and feasible, wherein the underflow and the overflow are subjected to solid-liquid separation by a horizontal screw centrifuge.

Through retrieval, utility model patent with publication number CN206746833U discloses a horizontal decanter centrifuge, comprising a horizontal decanter centrifuge main body, wherein a differential is arranged on the right side of the inner cavity of the horizontal decanter centrifuge main body, an auxiliary motor is arranged on the right side of the top of the horizontal decanter centrifuge main body, a coupling is arranged on the right side of the auxiliary motor, the bottom of the coupling extends into the inner cavity of the horizontal decanter centrifuge main body, one end of the coupling extending into the inner cavity of the horizontal decanter centrifuge main body is connected with the differential, a driving shaft is inserted into the inner cavity of the differential, and the right end of the driving shaft extends out of the right side wall of the horizontal decanter centrifuge main body; this patent simple structure, convenient to use, this patent adopt two kinds to adjust the mode that the differential mode combines and adjust the differential, have replaced the mode that differential was adjusted to single mode in the past for speed governing stability is lower. However, in the above patent scheme: when the oxalate-removing agent is used, the oxalate-removing agent needs to be cleaned, and a conventional horizontal screw centrifuge can be cleaned by using cold water, but the cleaning effect of the oxalate-removing agent and other mixed solutions by using cold water after separation is poor. For this reason we propose a horizontal screw centrifuge for the oxalate removal process.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims at providing a technology is got rid of to oxalate is with spiral shell centrifuge that crouches.

In order to solve the problem, the utility model adopts the following technical scheme:

the utility model provides a technology is got rid of to oxalate is with spiral shell centrifuge that crouches, includes frame and pre-storage water tank, the top of frame is provided with two support frames, two rotate between the support frame and be connected with the rotary drum, the inner chamber of rotary drum rotates and is connected with spiral defeated material pole, the one end of spiral defeated material pole extends to the outside and the fixed mounting of support frame has rotary joint, rotary joint's one end fixed mounting has three way valve, three way valve's one end fixedly connected with inlet pipe, the screw stopper is installed to the top screw thread of pre-storage water tank, the top fixedly connected with inlet tube of pre-storage water tank, be provided with rabbling mechanism on the pre-storage water tank, the top fixed mounting of pre-storage water tank has the water pump, the input and the output of water pump are fixedly connected with catheter respectively, one the one end of catheter extends to the inner chamber of pre-storage water tank, another the one end of catheter is connected with three way valve, the inner chamber of pre-storage water tank is provided with the electrothermal tube.

As a preferred scheme of the utility model, rabbling mechanism includes the servo motor of fixed mounting in the water tank side of reserving, servo motor's output shaft extends to the inner chamber and the fixedly connected with bull stick of the water tank of reserving in advance, the side fixedly connected with stirring board of bull stick.

As a preferred scheme of the utility model, be provided with in the frame and drive the first actuating mechanism of rotary drum pivoted, be provided with the second actuating mechanism that drives spiral conveying pole commentaries on classics in the frame.

As a preferred scheme of the utility model, the top of frame and the outside that is located the rotary drum are provided with the aircraft bonnet, the bottom of frame is provided with the liquid phase discharge port, the bottom of frame is provided with the solid phase discharge port.

As an optimized scheme of the utility model, the side of pre-storage water tank is provided with perspective board, the bottom fixed mounting of pre-storage water tank has the ooff valve.

As an optimized proposal of the utility model, the side fixed mounting of the pre-storage water tank is provided with a control panel.

Compared with the prior art, the utility model has the advantages of:

(1) The utility model discloses in, after to oxalate solution solid-liquid separation, from the inlet tube to the inner chamber water intaking of water tank in advance to heat water through the electrothermal tube, hot water through water tank inner chamber in advance washs rotary drum and spiral conveying pole, guarantees to this horizontal spiral shell centrifuge's cleaning quality.

(2) The utility model discloses in, when adhering to difficult abluent material on rotary drum and the spiral conveying pole in addition, open the solution that the screw plug added to material and carry out the dissolution in the oxalate solution to the inner chamber of pre-storage water tank, start servo motor simultaneously and make specific solvent and water phase mixture, utilize and mix and wash thoroughly in to rotary drum and the spiral conveying pole to the liquid of follow-up separation brings pollution and influence, has improved the practicality.

Drawings

FIG. 1 is a schematic view of the back side of the present invention;

FIG. 2 is a front schematic view of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

fig. 4 is a schematic sectional view of the pre-storage tank of the present invention.

The reference numbers in the figures illustrate:

1. a frame; 2. a support frame; 3. a drum; 4. a screw feed rod; 5. a hood; 6. a rotary joint; 7. a three-way valve; 8. a feed pipe; 9. a pre-storage water tank; 10. a first drive mechanism; 11. a second drive mechanism; 12. a liquid phase discharge port; 13. a solid phase discharge port; 14. a stirring mechanism; 15. a water pump; 16. a catheter; 17. a threaded plug; 18. a water inlet pipe; 19. A control panel; 20. a see-through plate; 21. an electric heating tube; 22. an on-off valve; 23. a servo motor; 24. a rotating rod; 25. and (4) stirring the plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The embodiment is as follows:

referring to fig. 1-4, a horizontal decanter centrifuge for an oxalate removing process comprises a rack 1 and a pre-storage water tank 9, wherein two support frames 2 are arranged at the top of the rack 1, a rotary drum 3 is rotatably connected between the two support frames 2, an inner cavity of the rotary drum 3 is rotatably connected with a spiral conveying rod 4, one end of the spiral conveying rod 4 extends to the outside of the support frames 2 and is fixedly provided with a rotary joint 6, one end of the rotary joint 6 is fixedly provided with a three-way valve 7, one end of the three-way valve 7 is fixedly connected with a feeding pipe 8, a threaded plug 17 is arranged at the top of the pre-storage water tank 9 in a threaded manner, the top of the pre-storage water tank 9 is fixedly connected with a water inlet pipe 18, a stirring mechanism 14 is arranged on the pre-storage water tank 9, a water pump 15 is fixedly arranged at the top of the pre-storage water tank 9, an input end and an output end of the water pump 15 are respectively and fixedly connected with a liquid guide pipe 16, one end of one liquid guide pipe 16 extends to the inner cavity of the pre-storage water tank 9, one end of the other liquid guide pipe 16 is connected with the three-storage water tank 7, and an electric heating pipe 21 is arranged in the inner cavity of the pre-storage water tank 9.

Specifically, referring to fig. 4, the stirring mechanism 14 includes a servo motor 23 fixedly installed on the side of the pre-stored water tank 9, an output shaft of the servo motor 23 extends to the inner cavity of the pre-stored water tank 9 and is fixedly connected with a rotating rod 24, and a stirring plate 25 is fixedly connected to the side of the rotating rod 24.

In this embodiment, the servo motor 23 drives the rotating rod 24 and the stirring plate 25 to rotate, and the liquid in the inner cavity of the pre-storage water tank 9 is stirred by the stirring plate 25.

Specifically, referring to fig. 3, the frame 1 is provided with a first driving mechanism 10 for driving the rotary drum 3 to rotate, and the frame 1 is provided with a second driving mechanism 11 for driving the spiral conveying rod 4 to rotate.

In this embodiment, the first driving mechanism 10 and the second driving mechanism 11 are respectively composed of a motor, a synchronous wheel and a synchronous belt, so that the motor drives the spiral feeding rod 4 and the rotary drum 3 to rotate.

Specifically, referring to fig. 3, a hood 5 is disposed at the top of the frame 1 and outside the drum 3, a liquid phase discharge port 12 is disposed at the bottom of the frame 1, and a solid phase discharge port 13 is disposed at the bottom of the frame 1.

In this embodiment, the liquid phase discharge port 12 is used for discharging the filtered liquid, and the solid phase discharge port 13 is used for discharging the filtered solid.

Specifically, referring to fig. 4, a perspective plate 20 is disposed on a side surface of the pre-water tank 9, and a switch valve 22 is fixedly installed at a bottom of the pre-water tank 9.

In this embodiment, the amount and state of liquid in the inner chamber of the preliminary storage tank 9 are controlled by the see-through plate 20, and the excess liquid in the inner chamber of the preliminary storage tank 9 is discharged by the open/close valve 22.

Specifically, referring to fig. 4, a control panel 19 is fixedly mounted on a side surface of the pre-water tank 9.

In this embodiment, the control panel 19 is electrically connected to the water pump 15, the electric heating tube 21 and the servo motor 23, respectively, and the control panel 19 controls the water pump 15, the electric heating tube 21 and the servo motor 23.

The working principle is as follows: when the device is used, the rotary drum 3 and the spiral conveying rod 4 are driven to rotate by the first driving mechanism 10 and the second driving mechanism 11, oxalate solution is guided into the spiral conveying rod 4 through the feeding pipe 8, the three-way valve 7 and the rotary joint 6, solid-liquid separation is carried out on the oxalate solution through the rotation of the spiral conveying rod 4 and the rotary drum 3, liquid is discharged from the liquid-phase discharge port 12, solid is discharged from the solid-phase discharge port 13, after the oxalate solution is subjected to solid-liquid separation, water is guided into the inner cavity of the water storage tank 9 from the water inlet pipe 18 and is heated through the electric heating pipe 21, when the rotary drum 3 and the spiral conveying rod 4 are cleaned, the water pump 15 is started, hot water in the inner cavity of the water storage tank 9 is guided into the spiral conveying rod 4 and the rotary drum 3 through the liquid guide pipe 16, the three-way valve 7 and the rotary joint 6 to be cleaned, substances which are difficult to clean can be attached to the rotary drum 3 and the spiral conveying rod 4, the threaded plug 17 is opened, the solution which is dissolved in the oxalate solution is added into the inner cavity of the water storage tank 9, the special solvent is mixed with the water phase, the servo motor 23 is started at the same time, finally, the rotary drum 3 and the rotary joint 6 are used for completely separating the liquid is cleaned through the rotary drum 3, and the rotary joint 4, and the rotary joint 6, and the rotary joint, and the rotary drum 4, and the rotary joint 4 can be cleaned, and can be completely separated, and can be used for completely, and can be used for preventing pollution.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the modified concept of the present invention within the technical scope disclosed in the present invention.

Claims

1. A horizontal screw centrifuge for oxalate removal process is characterized in that: the water pump is characterized by comprising a rack (1) and a pre-storage water tank (9), wherein two support frames (2) are arranged at the top of the rack (1), a rotary drum (3) is connected between the support frames (2) in a rotating mode, an inner cavity of the rotary drum (3) is connected with a spiral conveying rod (4) in a rotating mode, one end of the spiral conveying rod (4) extends to the outside of the support frame (2), a rotary joint (6) is fixedly installed at the outside of the support frame (2), a three-way valve (7) is fixedly installed at one end of the rotary joint (6), one end of the three-way valve (7) is fixedly connected with an inlet pipe (8), a threaded plug (17) is installed at the top of the pre-storage water tank (9) in a threaded mode, a water inlet pipe (18) is fixedly connected to the top of the pre-storage water tank (9), a stirring mechanism (14) is arranged on the pre-storage water tank (9), a water pump (15) is fixedly installed at the top of the pre-storage water tank (9), an input end and an output end of the water pump (15) is fixedly connected with a liquid guide pipe (16), one end of the liquid guide pipe (16) extends to the inner cavity of the pre-storage water tank (9), the other liquid guide pipe (16) is connected with the liquid guide pipe (7), and the inner cavity of the pre-storage water tank (21) is connected with the electric heating pipe (9).

2. A horizontal decanter centrifuge according to claim 1, wherein: the stirring mechanism (14) comprises a servo motor (23) fixedly installed on the side face of the pre-storage water tank (9), an output shaft of the servo motor (23) extends to an inner cavity of the pre-storage water tank (9) and is fixedly connected with a rotating rod (24), and a stirring plate (25) is fixedly connected to the side face of the rotating rod (24).

3. A decanter centrifuge, according to claim 1, for an oxalate removing process, characterized in that: the machine frame (1) is provided with a first driving mechanism (10) for driving the rotary drum (3) to rotate, and the machine frame (1) is provided with a second driving mechanism (11) for driving the spiral conveying rod (4) to rotate.

4. A decanter centrifuge, according to claim 1, for an oxalate removing process, characterized in that: the top of the rack (1) and the outer side of the rotary drum (3) are provided with a hood (5), the bottom of the rack (1) is provided with a liquid-phase discharge port (12), and the bottom of the rack (1) is provided with a solid-phase discharge port (13).

5. A horizontal decanter centrifuge according to claim 1, wherein: a perspective plate (20) is arranged on the side face of the pre-storage water tank (9), and a switch valve (22) is fixedly mounted at the bottom of the pre-storage water tank (9).

6. A horizontal decanter centrifuge according to claim 1, wherein: and a control panel (19) is fixedly arranged on the side surface of the pre-storage water tank (9).