A horizontal centrifuge device and centrifugation method with double-ended counter-rotating spiral feeding.
The horizontal centrifuge device with double-ended reverse spiral feeding uses a differential and regulating device to achieve double-ended weight balance of the suspension, which solves the problems of rotational instability and clogging in horizontal centrifuge devices, and improves centrifugation efficiency and stability.
Patent Information
- Application Number
- CN202310376545.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-11
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2043-04-11
AI Technical Summary
Horizontal centrifuges are prone to significant wear on one side during centrifugation, resulting in unstable rotation and easy blockage at the outlet, which affects separation efficiency.
The horizontal centrifugal device adopts a double-ended reverse spiral feeding mechanism. The conveyor and drum rotate at different speeds through a differential gear. Combined with the adjustment device and compensation component, it ensures the diversion and weight balance of the suspension with opposite spiral directions at both ends. The pressure sensing component automatically detects and adjusts the force on the central shaft to reduce shaking and wear.
It improves the stability and separation efficiency of the centrifugation process, reduces shaft end wear, and ensures the smoothness and quality of continuous centrifugation.
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Figure CN116174171B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of solid-liquid separation technology, specifically to a horizontal centrifuge device and centrifugation method with a double-ended counter-rotating spiral pusher. Background Technology
[0002] Centrifuges, as traditional solid-liquid phase separation devices, are widely used in chemical, petroleum, pharmaceutical, and food industries, and are one of the main industrial equipment. They mainly utilize the fact that a mixture contains solid and liquid phases with significantly different densities and are immiscible, and separate them by using centrifugal force to achieve different settling velocities.
[0003] Among them, horizontal centrifuges have a lower center of gravity and better stability compared to other centrifuges, such as vertical centrifuges, making them suitable for large-capacity centrifugation. However, unlike vertical centrifuges, the rotating centrifugal structure of horizontal centrifuges is supported at both ends, which makes it impossible to balance the forces on both ends during centrifugation. This can easily lead to greater wear on one side, resulting in less stable rotation and larger fluctuations in centrifugation during continuous centrifugation. Furthermore, the centrifugal force can cause shaking during operation, reducing separation efficiency.
[0004] In addition, most horizontal centrifuges use single-sided guided centrifugation, with one end being the inlet and the other the outlet. This can easily cause the outlet to be blocked by solids, affecting the centrifugal separation efficiency. Summary of the Invention
[0005] The purpose of this invention is to provide a horizontal centrifuge device and centrifugation method with double-ended reverse spiral feeding, so as to solve the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:
[0007] A horizontal centrifuge with double-ended counter-rotating spiral feeding includes a shell, a separating device, an adjusting device, and a drive motor. The drive motor is fastened to the shell and driven by the separating device. The shell has a working chamber, and the separating device and the adjusting device are respectively placed in the working chamber. The separating device includes a conveyor, and a rotating drum is provided on the outer layer of the conveyor. The drive motor is driven by the conveyor. A differential is provided on one side of the drive motor. The differential is driven by the rotating drum and the conveyor through a bevel gear set. The adjusting device is connected to the separating device.
[0008] The housing serves as the primary load-bearing foundation for mounting other components. Torque is input via a drive motor, and then transmitted differentially to the conveyor and drum, causing them to rotate at different speeds. This speed difference forces the denser solids to adhere to the inner wall of the drum, while the less dense liquids, subjected to less centrifugal force, remain within the solid layer, thus separating the solid and liquid phases. An adjusting device further divides the suspension transported by the conveyors rotating in opposite directions, ensuring balanced force on both ends and preventing excessive shaft wear during centrifugation, which would affect centrifugation smoothness and quality.
[0009] Furthermore, the conveyor includes a central shaft, with centrifugal zones at both ends of the central shaft, and separation blades in each centrifugal zone. The separation blades on both sides are spirally arranged, with the two separation blades rotating in opposite directions. The two separation blades are respectively fastened to the surface of the central shaft. A material channel is provided on the central shaft. The separation device also includes a feed pipe, which is connected to the material channel. The material channel has several discharge ports along the circumference, with the ends of the discharge ports facing the inner layer of the drum.
[0010] A distribution zone is provided on the central shaft, which is located between two centrifugal zones. The adjustment device includes a compensation component, which is connected to the central shaft drive. The compensation component includes an adjustment ring, a take-up roller, and compensation blades. A rotary groove is provided on the central shaft. The adjustment ring and the rotary groove are intermittently rotatably connected. A compensation chamber is provided on the adjustment ring. The take-up roller is placed in the compensation chamber. Several rolls of compensation blades are wound on the take-up roller. The two ends of the compensation blades are respectively fastened to the separation blades on both sides. The compensation blades are located in the distribution zone.
[0011] The central shaft is supported at both ends by bearings within the working chamber. The outer circumference of the central shaft is divided into three axial regions: the two ends are centrifugal zones, primarily used to install separation blades, causing the suspension to be centrifuged by the blades; the middle section is the distribution zone, where the discharge ports of the material channels on the central shaft are located. To ensure uniform discharge, several discharge ports are equidistantly arranged along the central shaft axis. During the rotation of the central shaft, the suspension in the material channels flows out from the discharge ports under centrifugal force. The length of the total number of blades on both sides is adjusted by a compensation component; the total length of the blades is the length of the separation blades. The length of the blades and the length of the compensating blades tilted at the same angle are adjusted by adjusting the ratio of the total blade length on both sides of the adjusting ring, thereby adjusting the suspension ratio on both sides, keeping the weight at both ends balanced, reducing shaking during centrifugation, and reducing wear. In the initial state, all the compensating blades are wound on the take-up roller, and the compensating blades on both sides are stacked and wound on the take-up roller. They are unwound together. The length of the compensating blades connected to the total blades is adjusted as needed to adjust the suspension guiding ratio. The take-up roller is rotated and supported by the compensation chamber.
[0012] Furthermore, the compensation assembly also includes a winding motor, which is intermittently driven to the winding roller. The adjustment device also includes a directional cylinder and a reversing motor. The reversing motor is placed in the rotary groove. The inner ring of the adjustment ring has a toothed surface. The output end of the reversing motor has a gear that meshes with the toothed surface of the adjustment ring. The reversing motor and the adjustment ring are driven together. The directional cylinder is placed at the two outlets of the compensation chamber. The output end of the directional cylinder has a locking block. The directional cylinder and the locking block are driven together by a ball joint. The compensation blade has a directional groove. The locking block and the directional groove are driven together. The central shaft has a guide groove. The compensation blade and the guide groove are adapted to each other.
[0013] The take-up motor provides power for the rotation of the take-up roller. When adjustment is required, the output torque of the take-up motor drives the take-up roller to rotate, causing the compensating blades to unwind from the take-up roller. The compensating blades are made of elastic metal and can complete the take-up and unwinding process. When the take-up motor unwinds, the reversing motor meshes with the toothed surface of the inner ring of the adjusting ring through gears, causing the adjusting ring to rotate and causing the unwound compensating blades to extend from the compensation chamber. The extension state of the compensating blades is adjusted by two directional cylinders at the outlet of the compensation chamber. The directional cylinders insert into the directional grooves of the compensating blades through locking blocks, thereby switching the state of the compensating blades being upright or attached to the central axis. The upright state of the compensating blades is when they are inserted into the guide grooves and can push the suspension to move, which is the state of being connected to the main blades. The state of being attached to the central axis is when the compensating blades cannot push the suspension forward, which is the state of not being connected to the main blades.
[0014] Furthermore, detection slots are provided at both ends of the housing, and the adjustment device also includes pressure sensing components. Two sets of pressure sensing components are placed in the detection slots respectively, and the pressure sensing components abut against the central shaft. The pressure sensing components include a magnetic column, a pressure sensing coil, and a return spring. The pressure sensing coil and the magnetic column are placed in the detection slots, and the upper end of the magnetic column abuts against the central shaft.
[0015] The pressure-sensing components are installed in the detection slots on both sides of the housing. One end of the magnetic column passes through the pressure-sensing coil, and the upper end abuts against the central shaft. The magnetic column can make frictional contact with the detection slot. When there is a difference in the weight of the centrifuged suspension on both sides of the central shaft, the side of the central shaft with the heavier suspension pushes the magnetic column downward. The pressure-sensing coil moves to cut the magnetic field lines, generating an induced current, thereby automatically detecting the unbalanced force on the central shaft.
[0016] Furthermore, the pressure sensing coil is electrically connected to the adjacent steering cylinder;
[0017] During reversal: the activated directional cylinder causes the compensating blade to insert into the guide groove, while the deactivated directional cylinder causes the adjacent compensating blade to fit against the outer ring of the central shaft.
[0018] When an imbalance is detected, the take-up motor unwinds the compensating blades. The reversing motor ensures that the unwound compensating blades remain spirally arranged, facilitating the movement of the suspension. Initially, the directional cylinder drives the compensating blades to unwind and remain upright, meaning the compensating blades extend out of the compensation chamber and insert into the guide groove. The side with the directional cylinder connected to the pressure-sensing coil has a greater weight. The directional cylinder drives the locking block to move, thereby bringing the compensating blades on this side into contact with the outer ring of the central shaft. This prevents the blades from tilting at the central shaft, thus preventing them from moving the suspension. This results in the lighter side of the central shaft having a longer total blade length than the heavier side, allowing more suspension to enter the lighter side. This automatic balance of the weight at both ends of the central shaft improves centrifugal smoothness and reduces shaft end wear.
[0019] As an optimization, a return spring is provided at the end of the magnetic column furthest from the central axis, and the bottom end of the return spring is connected to the detection groove. During the pressing and transmission process of the central axis on the magnetic column, the magnetic column presses the return spring. When the weights at both ends are balanced, the return spring resets the magnetic column, facilitating continuous weight monitoring.
[0020] As an optimization, the diameter of the separating blades decreases gradually along the direction away from the vertical center plane of the central axis. By gradually changing the diameter of the separating blades, the solid material inside the drum is pushed towards the shaft end during the rotation of the separating blades, facilitating separation and removal.
[0021] As an optimization, a slag outlet is provided at the end of the shell, and several overflow ports are provided on the drum. The overflow ports are arranged at an angle, with the inlet of the overflow port facing the end of the central shaft. The centrifuged solids are discharged from the slag outlet, and the inclined overflow ports prevent liquid from entering the overflow ports due to centrifugal inertia. When the liquid pressure between the drum and the conveyor increases, the pressure difference forces the liquid to flow from the overflow ports, thus achieving solid-liquid phase separation.
[0022] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention adjusts the ratio of the total blade length on both sides of the adjusting ring to regulate the ratio of the suspension on both sides, thereby maintaining the weight balance at both ends, reducing shaking during centrifugation, and reducing wear; when the winding motor unwinds, the reversing motor meshes with the toothed surface of the inner ring of the adjusting ring through gears, causing the adjusting ring to rotate, so that the unwound compensating blade extends out of the compensation chamber. The extension state of the compensating blade is adjusted by two directional cylinders at the outlet of the compensation chamber. The directional cylinders are inserted into the directional groove of the compensating blade through a locking block, thereby switching the state of the compensating blade vertically or close to the central shaft; when there is a difference in the weight of the centrifuged suspension on both sides of the central shaft, the end of the central shaft that receives the heavier suspension will rotate. The magnetic column is pushed downwards, and the pressure-sensing coil cuts the magnetic field lines, generating an induced current, which automatically detects the unbalanced force on the central shaft. When an imbalance is detected, the winding motor unwinds the compensating blades. The reversing motor ensures that the unwound compensating blades are still arranged in a spiral shape. The side with the directional cylinder connected to the pressure-sensing coil has a larger weight. The directional cylinder drives the locking block to move, thereby causing the compensating blades on this side to be in contact with the outer ring of the central shaft, without creating an angle with the central shaft, thus preventing the suspension from moving. This makes the total length of the blades on the lighter side of the central shaft longer than the heavier side, allowing more suspension to enter the lighter side. This automatically balances the weight at both ends of the central shaft, improving centrifugal smoothness and reducing shaft end wear. Attached Figure Description
[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:
[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0025] Figure 2 This is a schematic diagram of the double-ended reverse spiral of the present invention;
[0026] Figure 3 yes Figure 2 A magnified view of a portion of the view;
[0027] Figure 4 This is a schematic diagram of the overall blade extension adjustment of the present invention;
[0028] Figure 5 This is a schematic diagram of the power transmission for adjusting the compensating blades according to the present invention;
[0029] Figure 6 yes Figure 1 A partial zoom-in view (B) of the view;
[0030] In the diagram: 1-Shell, 11-Working chamber, 12-Detection groove, 13-Slag outlet, 2-Separation device, 21-Conveyor, 211-Central shaft, 2111-Centrifugal zone, 2112-Distribution zone, 2113-Rotating trough, 2114-Guide trough, 2115-Material channel, 212-Separation blade, 22-Drum, 221-Overflow port, 23-Feed pipe, 3-Adjusting device, 31-Compensation component, 311-Adjusting ring, 3111-Compensation chamber, 312-Take-up roller, 313-Compensation blade, 314-Take-up motor, 32-Pressure sensing component, 321-Magnetic column, 322-Pressure sensing coil, 323-Reset spring, 33-Directional cylinder, 34-Clamping block, 35-Reversing motor, 4-Drive motor, 5-Differential gear. Detailed Implementation
[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0032] The present invention provides the following technical solution:
[0033] like Figures 1 to 6 As shown, a horizontal centrifuge device with double-ended reverse spiral feeding includes a shell 1, a separation device 2, an adjustment device 3, and a drive motor 4. The drive motor 4 is fastened to the shell 1 and driven by the separation device 2. The shell 1 is provided with a working chamber 11. The separation device 2 and the adjustment device 3 are respectively placed in the working chamber 11. The separation device 2 includes a conveyor 21. A drum 22 is provided on the outer layer of the conveyor 21. The drive motor 4 is driven by the conveyor 21. A differential 5 is provided on one side of the drive motor 4. The differential 5 is driven by the drum 22 and the conveyor 21 respectively through a bevel gear set. The adjustment device 3 is connected to the separation device 2.
[0034] The housing 1 serves as the main load-bearing foundation for mounting other devices. The torque is input through the drive motor 4 and then transmitted to the conveyor 21 and the drum 22 via the differential speed device 5, causing the conveyor 21 and the drum 22 to rotate at different speeds, thus creating a speed difference. The high-speed rotating conveyor 21 and the drum 22 centrifuge and adhere the denser solids to the inner wall of the drum 22, while the liquids, due to their lower density, experience less centrifugal force and remain in the inner layer of the solids, thereby separating the solid and liquid phases. The regulating device 3 diverts the suspension conveyed by the conveyor 21, which rotates in opposite directions at both ends, to ensure that the conveyor 21 is subjected to balanced forces at both ends and to prevent excessive wear on the shaft end during centrifugation, which would affect the smoothness and quality of centrifugation.
[0035] Furthermore, the conveyor 21 includes a central shaft 211, with centrifugal zones 2111 at both ends of the central shaft 211. Each centrifugal zone 2111 is provided with a separation blade 212. The separation blades 212 on both sides are spirally arranged, with the two separation blades 212 rotating in opposite directions. The two separation blades 212 are respectively fastened to the surface of the central shaft 211. A material channel 2115 is provided on the central shaft 211. The separation device 2 also includes a feed pipe 23, which is connected to the material channel 2115. The material channel 2115 is provided with several discharge ports along the circumference, with the ends of the discharge ports facing the inner layer of the drum 22.
[0036] A distribution area 2112 is provided on the central shaft 211. The distribution area 2112 is located between two centrifugal zones 2111. The adjustment device 3 includes a compensation component 31. The compensation component 31 is connected to the central shaft 211. The compensation component 31 includes an adjustment ring 311, a take-up roller 312, and a compensation blade 313. A rotary groove 2113 is provided on the central shaft 211. The adjustment ring 311 and the rotary groove 2113 are intermittently rotatably connected. A compensation chamber 3111 is provided on the adjustment ring 311. The take-up roller 312 is placed in the compensation chamber 3111. Several rolls of compensation blade 313 are wound on the take-up roller 312. The two ends of the compensation blade 313 are respectively fastened to the separation blades 212 on both sides. The compensation blade 313 is located in the distribution area 2112.
[0037] The central shaft 211 is supported at both ends by bearings within the working chamber 11. The outer circumference of the central shaft 211 is divided into three axial regions: the two ends are centrifugal zones 2111, primarily used to install separation blades 212, causing the suspension to be centrifuged by the separation blades 212; the middle section is the distribution zone 2112; and the discharge port of the material channel 2115 on the central shaft 211 is located in the distribution zone 2112. To ensure uniform discharge, several discharge ports are equidistantly arranged along the axial direction of the central shaft 211. During the rotation of the central shaft 211, the suspension in the material channel 2115 flows out from the discharge port under centrifugal force. The length of the total blades on both sides is adjusted by the compensation component 31. The length of the blade is the length of the separating blade 212 and the length of the compensating blade 313 tilted at the same angle. By adjusting the ratio of the total blade length on both sides of the adjusting ring 311, the ratio of the suspension on both sides is adjusted to keep the weight of both ends balanced, reduce the shaking during centrifugation, and reduce wear. In the initial state, all the compensating blades 313 are wound on the take-up roller 312, and the compensating blades 313 on both sides are stacked and wound on the take-up roller 312. They are unwound together. The length of the compensating blades 313 connected to the total blade is adjusted as needed to adjust the suspension guiding ratio. The take-up roller 312 is rotated and supported by the compensation chamber 3111.
[0038] Furthermore, the compensation component 31 also includes a take-up motor 314, which is intermittently connected to the take-up roller 312. The adjustment device 3 also includes a directional cylinder 33 and a reversing motor 35. The reversing motor 35 is placed in the rotary groove 2113. The inner ring of the adjustment ring 311 is provided with a toothed surface. The output end of the reversing motor 35 is provided with a gear, which meshes with the toothed surface of the adjustment ring 311. The reversing motor 35 and the adjustment ring 311 are connected in a transmission manner. The directional cylinder 33 is placed at the two outlets of the compensation chamber 3111. The output end of the directional cylinder 33 is provided with a locking block 34. The directional cylinder 33 and the locking block 34 are connected in a transmission manner through a ball joint. The compensation blade 313 is provided with a directional groove, and the locking block 34 is connected in a transmission manner to the directional groove. The central shaft 211 is provided with a guide groove 2114, and the compensation blade 313 and the guide groove 2114 are adapted to each other.
[0039] The take-up motor 314 provides power for the rotation of the take-up roller 312. When adjustment is required, the take-up motor 314 outputs torque to drive the take-up roller 312 to rotate, causing the compensating blade 313 to unwind from the take-up roller 312. The compensating blade 313 is made of elastic metal and can complete the take-up and unwinding processes. When the take-up motor 314 unwinds, the reversing motor 35 engages with the toothed surface of the inner ring of the adjusting ring 311 through a gear, causing the adjusting ring 311 to rotate, causing the unwinding compensating blade 313 to extend from the compensating chamber 3111. Two directional cylinders 33 at the outlet of the compensation chamber 3111 adjust the extension state of the compensation blade 313. The directional cylinders 33 are inserted into the directional groove of the compensation blade 313 through the locking block 34, thereby switching the state of the compensation blade 313 being upright or attached to the central shaft 211. When the compensation blade 313 is upright, it is inserted into the guide groove 2114 and can push the suspension to move, which is the state of being connected to the main blade. When it is attached to the central shaft 211, the compensation blade 313 cannot push the suspension forward, which is the state of not being connected to the main blade.
[0040] Furthermore, the housing 1 is provided with detection grooves 12 at both ends, and the adjustment device 3 also includes pressure sensing components 32. Two sets of pressure sensing components 32 are respectively placed in the detection grooves 12. The pressure sensing components 32 abut against the central shaft 211. The pressure sensing components 32 include a magnetic column 321, a pressure sensing coil 322 and a return spring 323. The pressure sensing coil 322 and the magnetic column 321 are placed in the detection grooves 12, and the upper end of the magnetic column 321 abuts against the central shaft 211.
[0041] The pressure-sensing components 32 are installed through the detection slots 12 on both sides of the housing 1. One end of the magnetic column 321 passes through the pressure-sensing coil 322, and the upper end abuts against the central shaft 211. The magnetic column 321 can make frictional contact with the detection slots 12. When there is a difference in weight of the centrifuged suspension on both sides of the central shaft 211, the side of the central shaft 211 with the heavier suspension pushes the magnetic column 321 downward. The pressure-sensing coil 322 moves to cut the magnetic field lines and generates an induced current, thereby automatically detecting the unbalanced state of the force on the central shaft.
[0042] Furthermore, the pressure sensing coil 322 is electrically connected to the adjacent directional cylinder 33;
[0043] During reversal: the activated directional cylinder 33 causes the compensating blade 313 to insert into the guide groove 2114, while the deactivated directional cylinder 33 causes the adjacent compensating blade 313 to fit against the outer ring of the central shaft 211.
[0044] When an imbalance is detected, the take-up motor 314 unwinds the compensating blade 313. The reversing motor 35 ensures that the unwound compensating blade 313 remains spirally arranged, facilitating the movement of the suspension. Initially, the directional cylinder 33 drives the compensating blade 313 to unwind and stand upright, meaning the compensating blade 313 extends out of the compensation chamber 3111 and inserts into the guide groove 2114. The side of the directional cylinder 33 connected to the pressure sensing coil 322 has a larger weight. The directional cylinder 33 drives the locking block 34 to move, thereby causing the compensating blade 313 on this side to be in contact with the outer ring of the central shaft 211. There is no tilt angle between the blade and the central shaft 211, meaning the suspension cannot be moved. This results in the total blade length on the lighter side of the central shaft 211 being longer than the heavier side. Even if more suspension enters the lighter side, the weight of the two ends of the central shaft is automatically balanced, improving centrifugal smoothness and reducing shaft end wear.
[0045] As an optimization, a return spring 323 is provided at the end of the magnetic column 321 away from the central shaft 211, and the bottom end of the return spring 323 is connected to the detection groove 12. During the pressing and transmission process of the central shaft 211 on the magnetic column 321, the return spring 323 is pressed by the magnetic column 321. When the weights at both ends are balanced, the return spring resets the magnetic column 321, which facilitates continuous weight monitoring.
[0046] As an optimization, the diameter of the separating blade 212 decreases gradually along the direction away from the vertical center plane of the central axis 211. By gradually changing the diameter of the separating blade 212, the solid material inside the drum 22 is pushed towards the shaft end during rotation, facilitating separation and removal.
[0047] As an optimization, the shell 1 is provided with a slag outlet 13 at one end, and the drum 22 is provided with several overflow ports 221. The overflow ports 221 are arranged at an angle, with the inlet of the overflow port 221 facing the end of the central shaft 211. The centrifuged solids are discharged from the slag outlet 13. The inclined overflow ports 221 prevent liquid from entering the overflow ports 221 under the action of centrifugal inertia. When the liquid pressure between the drum 22 and the conveyor 21 increases, the liquid is pushed to flow from the overflow ports 221 under the action of pressure difference, so as to achieve solid-liquid phase separation.
[0048] A centrifugation method for a horizontal centrifuge device with double-ended counter-rotating spiral feeders, the centrifugation method comprising the following steps:
[0049] 1) Liquid inlet centrifugation; The suspension is fed into the feed channel 2115 through the feed pipe 23. Under the action of centrifugal force, the suspension flows out. Through differential speed setting, the solids adhere to the outer layer of the drum 22, and the liquid is located in the inner layer of the drum 22.
[0050] 2) Dual-end balance detection; During the centrifugation process, the suspension exerts a reverse force on the central shaft 211, which will affect the dual-end balance state of the central shaft 211. The weight of the suspension separated by dual-end centrifugation is monitored.
[0051] 3) Discharge guidance and distribution, and weight balance; for the lighter end of the central shaft 211, the total blade length is extended to increase the total amount entering the centrifugal separation, so that the forces on both ends of the central shaft are balanced, and to prevent excessive wear on one end, which would affect the centrifugal separation efficiency.
[0052] 4) Solid-liquid separation and diversion. The solid and liquid materials after solid-liquid centrifugation are diverted separately through the weight-balanced conveyor 21 to facilitate continuous centrifugation.
[0053] The working principle of this invention is as follows: During the rotation of the central shaft 211, the suspension in the material channel 2115 flows out from the outlet under centrifugal force. The length of the total blades on both sides is adjusted by the compensation component 31. The length of the total blades is the length of the separating blade 212 and the length of the compensation blade 313 which is inclined at the same angle. By adjusting the ratio of the total blade lengths on both sides of the adjusting ring 311, the ratio of the suspension on both sides is adjusted to keep the weight of both ends balanced. When the winding motor 314 unwinds, the reversing motor 35, through gears and the adjusting ring 311, The meshing of the inner ring's toothed surfaces causes the adjusting ring 311 to rotate, causing the unwound compensating blade 313 to extend from the compensating chamber 3111. Two directional cylinders 33 at the outlet of the compensating chamber 3111 adjust the extension state of the compensating blade 313. The directional cylinders 33 are inserted into the directional grooves of the compensating blade 313 via locking blocks 34, thus switching the state of the compensating blade 313 between upright and aligned with the central shaft 211. The upright state of the compensating blade 313 involves insertion into the guide groove 2114, which can push the suspension forward; this is the state of connection to the main blade. When a weight difference arises between the centrifugally distributed suspension on both sides of shaft 211, the side of shaft 211 with the heavier suspension pushes the magnetic column 321 downward, causing the pressure sensing coil 322 to cut magnetic field lines and generate an induced current. When an imbalance is detected, the winding motor 314 unwinds the compensating blade 313. The reversing motor 35 ensures that the unwound compensating blade 313 remains in a spiral arrangement to facilitate the movement of the suspension. Initially, the reversing cylinder 33 drives the compensating blade 313 to unwind and be in an upright position, i.e., the compensating blade 313... After extending out of the compensation chamber 3111, the blade 13 is inserted into the guide groove 2114. The side of the directional cylinder 33 connected to the pressure sensing coil 322 has a larger weight. The directional cylinder 33 drives the locking block 34 to move, thereby causing the compensation blade 313 on this side to be in contact with the outer ring of the central shaft 211. There is no tilt angle between it and the central shaft 211, that is, it cannot push the suspension to move. This makes the total blade length on the lighter side of the central shaft 211 longer than the heavier side. Even if more of the suspension enters the lighter side, the weight of the two ends of the central shaft is automatically balanced.
[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0055] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A horizontal centrifuge device with double-ended counter-rotating spiral feeding, characterized in that: The horizontal centrifuge device includes a shell (1), a separation device (2), an adjustment device (3), and a drive motor (4). The drive motor (4) is fastened to the shell (1), and the drive motor (4) is driven to the separation device (2). The shell (1) is provided with a working chamber (11). The separation device (2) and the adjustment device (3) are respectively placed in the working chamber (11). The separation device (2) includes a conveyor (21). The outer layer of the conveyor (21) is provided with a drum (22). The drive motor (4) is driven to the conveyor (21). A differential (5) is provided on one side of the drive motor (4). The differential (5) is driven to the drum (22) and the conveyor (21) respectively through a bevel gear set. The adjustment device (3) is connected to the separation device (2). The conveyor (21) includes a central shaft (211), centrifugal zones (2111) are provided at both ends of the central shaft (2111), and separation blades (212) are provided in each of the two centrifugal zones (2111). The separation blades (212) on both sides are spirally arranged, and the two separation blades (212) rotate in opposite directions. The two separation blades (212) are respectively fastened to the surface of the central shaft (211). A material channel (2115) is provided on the central shaft (211). The separation device (2) also includes a feed pipe (23). The feed pipe (23) and the material channel (2115) are connected. The material channel (2115) is provided with several discharge ports along the circumference. The end of the discharge port faces the inner layer of the drum (22). The central shaft (211) is provided with a distribution area (2112), which is located between two centrifugal zones (2111). The adjusting device (3) includes a compensation component (31), which is connected to the central shaft (211) in a driving manner. The compensation component (31) includes an adjusting ring (311), a take-up roller (312), and a compensation blade (313). The central shaft (211) is provided with a rotary groove (2113). The adjustment ring (311) and the rotary groove (2113) are intermittently rotatably connected. The adjustment ring (311) is provided with a compensation chamber (3111). The take-up roller (312) is placed in the compensation chamber (3111). Several rolls of compensation blades (313) are wound on the take-up roller (312). The two ends of the compensation blades (313) are respectively fastened to the separation blades (212) on both sides. The compensation blades (313) are located in the distribution area (2112). The compensation component (31) also includes a take-up motor (314), which is intermittently connected to the take-up roller (312). The adjustment device (3) also includes a directional cylinder (33) and a reversing motor (35). The reversing motor (35) is placed in the rotary groove (2113). The inner ring of the adjustment ring (311) is provided with a toothed surface. The output end of the reversing motor (35) is provided with a gear. The gear meshes with the toothed surface of the adjustment ring (311). The adjustment ring (311) is connected to the adjustment cylinder (33) and the adjustment cylinder (33) is located at the two outlets of the compensation chamber (3111). The output end of the adjustment cylinder (33) is provided with a locking block (34). The adjustment cylinder (33) and the locking block (34) are connected by ball joint transmission. The compensation blade (313) is provided with an adjustment groove. The locking block (34) and the adjustment groove are connected by transmission. The central shaft (211) is provided with a guide groove (2114). The compensation blade (313) and the guide groove (2114) are adapted to each other. The housing (1) is provided with detection slots (12) at both ends. The adjustment device (3) also includes a pressure sensing component (32). The two sets of pressure sensing components (32) are respectively placed in the detection slots (12). The pressure sensing component (32) and the central shaft (211) abut against each other. The pressure sensing component (32) includes a magnetic column (321), a pressure sensing coil (322) and a return spring (323). The pressure sensing coil (322) and the magnetic column (321) are placed in the detection slots (12). The upper end of the magnetic column (321) abuts against the central shaft (211). The pressure sensing coil (322) is electrically connected to the adjacent steering cylinder (33); During reversal: the activated directional cylinder (33) causes the compensating blade (313) to insert into the guide groove (2114), while the deactivated directional cylinder (33) causes the adjacent compensating blade (313) to fit against the outer ring of the central shaft (211).
2. The horizontal centrifuge device with double-ended counter-rotating spiral feeding according to claim 1, characterized in that: The magnetic column (321) is provided with a reset spring (323) at the end away from the central axis (211), and the bottom end of the reset spring (323) is connected to the detection groove (12).
3. A horizontal centrifuge device with double-ended counter-rotating spiral feeding according to claim 2, characterized in that: The separation blades (212) are arranged with decreasing screw diameters along the direction away from the vertical center plane of the central axis (211).
4. A horizontal centrifuge device with double-ended counter-rotating spiral feeding as described in claim 3, characterized in that: The shell (1) is provided with a slag outlet (13) at one end, and the drum (22) is provided with several overflow outlets (221). The overflow outlets (221) are arranged at an angle, and the inlet of the overflow outlets (221) faces the end of the central shaft (211).
5. The centrifugation method of a horizontal centrifuge device with double-ended counter-rotating spiral feeding according to claim 4, characterized in that: The centrifugation method includes the following steps: 1) Inject liquid and centrifuge; 2) Dual-end balance detection; 3) Discharge distribution is guided and weight is balanced; 4) Solid-liquid separation and diversion.
Citation Information
Patent Citations
Double-ended reverse spiral material-pushing horizontal centrifuge
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Horizontal type double-cone spiral sedimentation centrifuge
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