Centrifugal liquid outlet kinetic energy recovery device and centrifugal separation equipment

Abstract

The invention relates to the technical field of centrifugal separation, and discloses a centrifugal liquid outlet kinetic energy recovery device and centrifugal separation equipment. The centrifugal liquid outlet kinetic energy recovery device comprises a plurality of leading-out cavities which are uniformly arranged on a heavy-phase weir plate in the circumferential direction of the heavy-phase weir plate and synchronously rotate with the heavy-phase weir plate; the interior of the leading-out cavity is divided into a double-layer structure by the impact baffle plate, so that fluid in the leading-out cavity forms a C-shaped path, and an outlet of the C-shaped path forms a nozzle for spraying out fluid opposite to the rotation direction of the heavy phase weir plate, so that the counter-acting force of the fluid positively acts on rotation of the leading-out cavity; and a force exerting surface which is used for positively acting on the leading-out cavity to rotate under the impact of fluid is formed at the reverse folding part of the C-shaped path. The normal impact force of the fluid is decomposed by impacting the inclined surface, a tangential component force is generated, a forward driving torque is directly formed on the cavity, the jet direction of the fluid jetted from the nozzle is set to be opposite to the rotating direction of the rotary drum, and a strong forward torque is applied to the rotary drum again by the counter-acting force generated by the jet flow. Torque generated by inclined plane impact and jet reverse thrust is superposed in the same direction.

Description

Technical Field

[0001] This invention relates to the field of centrifugal separation technology, and in particular to a centrifugal effluent kinetic energy recovery device and centrifugal separation equipment. Background Technology

[0002] Centrifugal separation equipment is a machine that uses centrifugal force generated by high-speed rotation to separate the components of a mixture. Centrifugal extraction equipment is a specialized type of machine used for liquid-liquid extraction, particularly suitable for efficient separation of systems that are easily emulsified or have small density differences. For example, in the recycling of new energy batteries, lithium ions need to be recovered from the lithium precipitation mother liquor (organic phase). This equipment allows the mother liquor and extractant (aqueous phase) to mix and transfer rapidly within its interior, and then uses powerful centrifugal force to achieve rapid and clear separation of the aqueous and organic phases, thereby efficiently extracting lithium. This process has advantages over traditional methods, such as high efficiency and less susceptibility to emulsification.

[0003] For example, in the utility model patent with authorization announcement number CN200977420Y, the two-phase liquid enters the annular gap between the rotating drum and the fixed drum from the light phase inlet and the heavy phase inlet for mixing and mass transfer. The mixed two-phase liquid enters the rotating drum from the bottom of the drum for phase separation. The separated light phase is discharged into the light phase collection chamber through the light phase weir and discharged from the stage through the light phase outlet. The clarified heavy phase is discharged into the heavy phase collection chamber through the heavy phase weir and discharged from the stage through the heavy phase outlet.

[0004] However, this solution still has some problems. Specifically, when the separated liquid (especially the heavy phase) is thrown out from the drum weir plate under strong centrifugal force, its "absolute" jet direction is consistent with the rotational tangent direction of the outer edge of the drum. According to Newton's third law (action and reaction), as the liquid is accelerated outward, it generates an equal and opposite reaction force on the drum itself. This reaction force is exactly opposite to the direction of the drum's rotation, thus forming a continuous "resistance torque" or "braking torque." This torque directly cancels out a portion of the effective torque output by the drive motor. To maintain the drum's rated speed, the drive motor must do extra work to overcome the resistance generated by the fluid it discharges, resulting in unnecessary power consumption and reduced overall energy efficiency. From an engineering perspective, this not only increases operating costs but may also limit the application advantages of this solution in applications requiring high power density or energy saving, while the large amount of kinetic energy in the ejected liquid is wasted. Summary of the Invention

[0005] To address the aforementioned problems, this invention aims to provide a centrifugal effluent kinetic energy recovery device and centrifugal separation equipment that can convert resistance into power, save energy and reduce consumption during operation, and increase system efficiency and reduce burden.

[0006] The technical solution of the present invention is as follows: This invention provides a centrifugal effluent kinetic energy recovery device, comprising multiple outlet cavities uniformly arranged circumferentially on a heavy phase weir plate and rotating synchronously thereon. The outlet cavities are divided into a double-layer structure by an impact baffle plate, thereby forming a C-shaped path for the fluid inside the outlet cavities. The outlet of the C-shaped path forms a nozzle for ejecting fluid in the opposite direction to the rotation of the heavy phase weir plate, so that the reaction force of the fluid acts positively on the rotation of the outlet cavities. The reverse bend of the C-shaped path forms a force surface for positively acting on the rotation of the outlet cavities under the impact of the fluid.

[0007] According to one embodiment of the present invention, the force-bearing surface is an inclined surface disposed on the inner wall of each outlet cavity, and the incline of the inclined surface points towards the nozzle side.

[0008] According to one embodiment of the present invention, the jetting direction of the nozzle is tangential to the circle formed by the rotation path of the outlet cavity.

[0009] According to one embodiment of the present invention, the outlet cavity is formed with a streamlined head at the end away from the nozzle to reduce wind resistance.

[0010] According to one embodiment of the present invention, the heavy phase weir plate is provided with a guide hole that communicates with the C-shaped path inlet.

[0011] According to one embodiment of the present invention, guide plates are installed at intervals below the heavy phase weir plate and are fixed in position to each other. A guide cavity for receiving fluid on the side of the drum wall is formed between the heavy phase weir plate and the guide plates. The drum is provided with a conical widening section below the heavy phase weir plate so that the liquid inside and outside the drum flows faster and is deflected into the guide hole under the action of the guide plates.

[0012] According to one embodiment of the present invention, the cross-section of the guide hole is tapered with a diameter that gradually increases from bottom to top.

[0013] The present invention also provides a centrifugal separation device, including the centrifugal effluent kinetic energy recovery device of the above embodiment, and further including a frame and a drive motor mounted on the frame. A shell is fixedly installed inside the frame, and a drum is rotatably installed inside the shell via a rotating shaft. The working end of the drive motor is connected to the rotating shaft for transmission. Heavy phase inlet and light phase inlet are respectively provided on the bottom two sides of the shell. From top to bottom, heavy phase weir plate and light phase weir plate are sequentially provided on the top inner wall of the drum. A heavy phase collection chamber is formed above the heavy phase weir plate, and a light phase collection chamber is formed above the light phase weir plate. A heavy phase outlet is formed on the heavy phase collection chamber, and a light phase outlet is formed on the light phase collection chamber.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: Based on the aforementioned device design, this invention sets multiple outlet cavities along the tangential direction of the weir plate. The separated high-speed fluid then impacts an inclined plane, which decomposes the normal impact force of the fluid into a tangential component force. This component force directly generates a positive driving torque on the cavity. Furthermore, the fluid ejected from the nozzle is set to spray in the opposite direction to the rotation direction of the drum. The reaction force generated by the jet stream applies another strong positive torque to the drum. The torque generated by the inclined plane impact and the jet thrust is superimposed in the same direction, forming a significant auxiliary driving effect. This directly reduces the load on the main drive motor and achieves significant energy saving. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a half-section structure according to Embodiment 1 of the present invention; Figure 2 for Figure 1 A magnified view of part A in the image; Figure 3 for Figure 2 Derive the longitudinal section of the cavity; Figure 4 for Figure 2 Derive a top view of the cavity from the middle; Figure 5 This is a schematic diagram of a half-section structure according to Embodiment 2 of the present invention; Figure 6 for Figure 5 A magnified view of part B in the image.

[0017] In the picture: 100. Centrifugal separation equipment; 200. Centrifugal effluent kinetic energy recovery device; 300. Feeding device; 101. Frame; 102. Drive motor; 103. Outer shell; 104. Rotating shaft; 105. Rotating drum; 105A. Conical widening section; 106. Heavy phase weir plate; 107. Light phase weir plate; 108. Heavy phase collection chamber; 109. Light phase collection chamber; 110. Heavy phase outlet; 111. Light phase outlet; 112. Guide hole ; 113. Heavy phase inlet; 114. Light phase inlet; 115. Feed impeller; 201. Outlet cavity; 202. Nozzle; 203. Head; 203A. Inclined surface; 204. Impact baffle; 205. Guide plate; 301. Premixing cavity; 302. Spiral suction impeller; 303. Mixing impeller; 304. Enhanced stirring impeller; 305. Mixing baffle; 306. Spiral feeder; 307. Press impeller. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Example 1 like Figures 1 to 4As shown, this embodiment provides a centrifugal liquid kinetic energy recovery device 200 (a rotating component, typically made of stainless steel, used to recover and convert the kinetic energy of separated liquids into auxiliary driving force). It includes multiple outlet chambers 201 (rotary kinetic energy recovery units, uniformly distributed and fixedly connected) evenly arranged circumferentially on and rotating synchronously with the heavy phase weir plate 106. The outlet chambers 201 are divided into a double-layer structure (forming inner and outer flow channels) by impact baffles 204, so that the fluid inside the outlet chamber forms a C-shaped path (fluid flows along the curved channel). The outlet of the C-shaped path forms a nozzle 202 (reverse jet nozzle) for ejecting fluid in the opposite direction of rotation of the heavy phase weir plate 106, so that the reaction force of the fluid acts positively on the rotation of the outlet chambers 201 (generating a torque to boost the drum 105). The reverse bend of the C-shaped path forms a force-guiding area for positively acting on the rotation of the outlet chambers 201 under the impact of the fluid. Furthermore, the force-bearing surface is an inclined surface 203A (inclined guide surface) provided on the inner wall of each outlet cavity 201, and the direction of the inclination of the inclined surface 203A points towards the nozzle 202 (to guide the fluid to smoothly change direction). Furthermore, the jetting direction of the nozzle 202 is tangential to the circle formed by the rotation path of the outlet cavity 201 (jetting in the opposite direction along the tangent to enhance thrust). Furthermore, a streamlined head 203 (drag-reducing leading edge, usually integrally machined) is formed at the end of the outlet cavity 201 away from the nozzle 202 to reduce wind resistance. Furthermore, a guide hole 112 (liquid introduction channel) is provided on the heavy phase weir plate 106 to communicate with the C-shaped path inlet. Furthermore, guide plates 205 (annular baffles) are installed at intervals below the heavy phase weir plate 106, with fixed positions relative to each other. A guide cavity (annular gap liquid collection area) is formed between the heavy phase weir plate 106 and the guide plates 205 to collect the fluid on the wall side of the drum 105. A conical widening section 105A is provided below the heavy phase weir plate 106 on the drum 105 (this structure is designed to promote accelerated liquid flow and is usually integrally machined with the drum 105), so that the liquid inside and outside the drum 105 flows accelerated and is deflected into the guide hole 112 under the action of the guide plates 205. Furthermore, the cross-section of the guide hole 112 is a cone with a diameter that gradually increases from bottom to top (an enlarged inlet to facilitate smooth fluid entry).This embodiment also provides a centrifugal separation device 100 (industrial centrifugal separation system), including the centrifugal effluent kinetic energy recovery device 200 of the above-described embodiment, and further including a frame 101 (support frame, usually a welded metal structure) and a drive motor 102 (main drive device) mounted on the frame 101. A housing 103 (equipment outer cylinder, usually a metal shell) is fixedly installed inside the frame 101. A rotating drum 105 (high-speed rotating separation chamber, usually made of metal material) is rotatably mounted inside the housing 103 via a rotating shaft 104. The working end of the drive motor 102 is connected to the rotating shaft 104 via a coupling or belt. The bottom sides of the outer casing 103 are respectively provided with a heavy phase inlet 113 and a light phase inlet 114 (material input interface). From top to bottom, the inner wall of the top of the drum 105 is provided with a heavy phase weir plate 106 and a light phase weir plate 107 (overflow weir for controlling the separation height of the two phases). A heavy phase collection chamber 108 (heavy phase temporary storage area) is formed above the heavy phase weir plate 106, and a light phase collection chamber 109 (light phase temporary storage area) is formed above the light phase weir plate 107. A heavy phase outlet 110 (heavy phase discharge channel) is formed on the heavy phase collection chamber 108, and a light phase outlet 111 (light phase discharge channel) is formed on the light phase collection chamber 109.

[0020] Example 2 like Figures 5 to 6As shown, this embodiment, based on Embodiment 1, also includes the following limitations: A feeding device 300 (an integrated module for material pretreatment, typically made of stainless steel and integrally installed) is provided at the bottom of the drum 105. The feeding device 300 includes a premixing chamber 301 (an annular mixing chamber, coaxially fitted with the drum 105) fitted in the inlet area of ​​the drum 105. A rotating shaft 104 passes through the drum 105 and extends into the premixing chamber 301, with a secondary mixing device (a fine mixing component for material homogenization) at its end. A primary mixing device (a coarse mixing component for initial material intake and preliminary stirring) is provided at the bottom of the premixing chamber 301. The rotating drum 105, premixing chamber 301, and rotating shaft 104 are all driven by the same power source to generate rotation (synchronous rotation, no additional seals required). This allows the material to be drawn into the premixing chamber 301 through the gap between the outer shell 103 and the premixing chamber 301, and then undergo secondary mixing through the primary mixing device and the secondary mixing device before entering the rotating drum 105. (First, the material flows naturally from the gap between the outer shell 103 and the premixing chamber 301, then is drawn in by the centripetal impeller 302 of the primary mixing device and initially stirred, then finely mixed by the mixing impeller 303 of the secondary mixing device, and finally actively pumped into the rotating drum 105 by the feed impeller 115.) The secondary mixing device is configured as a mixing impeller 303 (conical stirring blades, which enhance shear force) that is fixedly installed at the bottom of the rotating shaft 104 and synchronously driven by the rotating shaft 104. The primary mixing device is configured as a centripetal impeller 302 (radial suction structure, which realizes centripetal flow of materials) that is fixedly installed at the bottom of the premixing chamber 301 and synchronously driven by the premixing chamber 301. In this embodiment, the bottom portion of the drum 105 extends into the premixing chamber 301, and a feed impeller 115 (with built-in pumping element, actively conveying as the drum 105 rotates) is provided on this portion for pumping fluid into the drum 105. The premixed material is actively pumped from the premixing chamber 301 into the drum 105 (first, the pressure impeller 307 rotates and guides the liquid on the outer periphery of the premixing chamber 301 to the center, and then the mixed material is axially pushed into the drum 105 by the feed impeller 115), ensuring that the material enters the centrifugal separation area stably, continuously, and efficiently, avoiding interruption of feeding or decrease in separation efficiency due to insufficient pressure or poor flow. Furthermore, an enhanced stirring impeller 304 (auxiliary turbulence-increasing blades to enhance turbulence intensity) is fixedly installed on the inner wall of the premixing chamber 301, so that the enhanced stirring impeller 304 is synchronously driven to rotate by the premixing chamber 301 to enhance the stirring effect (first, the premixing chamber 301 rotates to drive the enhanced stirring impeller 304, and then the impeller stirs to break the laminar flow and promote uniform mixing of materials). The longitudinal section of the mixing impeller 303 presents a cone shape with a gradually increasing diameter from bottom to top (inverted cone structure, which is conducive to guiding materials from the outside to the inside).It also includes a spiral guide 306 (axial guide vanes, fixed to the outer wall of the premixing chamber 301). The spiral guide 306 is fixedly connected to the outer wall of the premixing chamber 301 so that the spiral guide 306 is synchronously driven to rotate by the premixing chamber 301, thereby accelerating the downward flow of liquid in the gap between the outer shell 103 and the premixing chamber 301 (first, the spiral guide 306 rotates to guide the liquid to flow axially downward, and then accelerates the rapid collection of liquid in the gap). It also includes a mixing baffle 305 (anti-backflow baffle, installed at the top of the outer wall of the premixing chamber 301). The mixing baffle 305 is fixedly installed at the top of the outer wall of the premixing chamber 301 to cooperate with the spiral guide 306 to prevent the upward flow of liquid in the gap between the outer shell 103 and the premixing chamber 301 (first, the mixing baffle 305 blocks the upward backflow of liquid, and then works with the spiral guide 306 to form a single downward flow channel). It also includes a pressing impeller 307 (radial return guide impeller, fixed to the top of the inner wall of the premixing chamber 301). The pressing impeller 307 is fixedly connected to the top of the inner wall of the premixing chamber 301 so that the liquid on the outer side of the premixing chamber 301 is rotated to the middle of the premixing chamber 301 and sucked in (first the pressing impeller 307 rotates to guide the outer peripheral liquid to the center, and then promotes the smooth flow of the material into the primary mixing device).

[0021] The working principle of Example 2 is as follows: First, the heavy phase and light phase raw materials enter the annular flow channel between the premixing chamber 301 and the outer shell 103 through the heavy phase inlet 113 and the light phase inlet 114, respectively. Under the guidance and obstruction of the mixing baffle 305, the two-phase fluids flow axially downwards and generate initial tangential shear. At this time, the drive motor 102 starts, driving the drum 105 and the premixing chamber 301 fixedly connected to it to rotate synchronously at high speed through the rotating shaft 104. The spiral guide 306 provided on the outer wall of the premixing chamber 301 rotates accordingly, and its spiral blades generate a downward axial pumping force when rotating, forcing the fluid in the annular gap to be conveyed downwards, thereby ensuring that the material can be effectively captured by the centripetal impeller 302 located at the bottom. The centripetal impeller 302 rotates at high speed with the rotating shaft 104, generating a significant negative pressure in its inlet center region, which powerfully pumps the downward-conveyed two-phase fluid upwards into the center inlet at the bottom of the premixing chamber 301. This pumping process, accompanied by intense shearing and entrainment, completes the first discretization and preliminary mixing of the heavy and light phases.

[0022] Subsequently, the material entering from the bottom center of the premixing chamber 301 is immediately captured and subjected to a second high-intensity mixing by the coaxially mounted, suspended conical mixing impeller 303. The high-speed rotation of this impeller generates intense turbulence. Its unique conical structure not only enhances radial shear strength but also generates an axial force pointing towards the central axis of the drum 105, preferentially guiding the lighter, less dense phase upwards. This design ensures that the lighter phase tends to reach a higher liquid level before entering the main separation zone, effectively preventing secondary mixing and backmixing of the lighter phase with the settled heavier phase at the bottom of the drum 105, thus laying a fluid dynamic foundation for clear phase interface separation. Through the dedicated premixing chamber 301 located at the front end of the drum 105, this system completes two-stage progressive mixing within a compact, relatively enclosed high-intensity shear field before the material enters the main drum 105, significantly increasing the mass transfer surface area and mixing uniformity, creating excellent conditions for subsequent efficient extraction reactions.

[0023] Then, the mixture in the premixing chamber 301 is further sheared and homogenized by the reinforced stirring impeller 304 fixed inside the chamber, completing the third final mixing. Under the action of strong centrifugal force, some of the fluid that may be insufficiently mixed and rises along the inner wall of the premixing chamber 301 is forced to flow back to the middle of the chamber by the pressure impeller 307 rotating at the top of the chamber, forming an internal circulation to ensure that nothing is missed. Finally, all materials are sucked in by the feed impeller 115 at the bottom of the drum 105 and smoothly enter the main separation zone of the drum 105. The fluid entering the drum 105 rotates at high speed with the drum 105 and gradually rises along the axis. When it enters the tapered widening section 105A of the upper half of the drum 105 with a gradually expanding diameter, the separation environment is optimized in two ways: first, the separation radius increases, and according to the centrifugal force formula F_c = mω²r, the separation factor is significantly improved, and the separation driving force is enhanced; second, the tapered space provides a larger sedimentation storage volume for the heavy phase, reducing the risk of interface disturbance.

[0024] Inside the drum 105, the fluid rapidly stratifies under a centrifugal force field several times stronger than gravity: the heavy phase is thrown against the drum wall and flows upward along it; the light phase accumulates in the central region. The opening of the light phase weir 107 extends precisely to the light phase accumulation area, guiding the separated light phase to the light phase collection chamber 109, and finally discharging it from the light phase outlet 111. The heavy phase continues to rise along the drum wall, and after passing the top of the heavy phase weir 106, it is effectively captured by the guide plate 205 located on the separation side of the weir. The guide plate 205 smoothly guides the high-speed heavy phase fluid into the guide hole 112 (its tapered design, smaller at the bottom and larger at the top, facilitates fluid acceleration and stabilizes the flow rate), and then injects it into the outlet chamber 201. This chamber is precisely arranged along the tangential direction of the rotation circle of the drum 105 and is the core of kinetic energy conversion.

[0025] Within the outlet cavity 201, the high-speed fluid first impacts the fixed impact baffle 204, precisely splitting into two streams. One stream deflects to the left, entering the lower half of the nozzle 202, but the lower half of the nozzle 202 is closed, so subsequent water flow can only come from the other side; the other stream deflects to the right, first impacting the inclined surface 203A within the head 203. The inclined surface 203A decomposes the normal impact force of the fluid, generating a tangential component force, directly creating a positive driving torque on the cavity (i.e., the rotating drum 105). Subsequently, this stream of fluid bypasses the impact baffle 204 and is ejected from the upper half of the nozzle 202. All fluid ejected from the nozzle 202 has its ejection direction set opposite to the rotation direction of the rotating drum 105. According to Newton's third law, the reaction force generated by the jet stream again applies a strong positive torque to the rotating drum 105. The torque generated by the impact of the inclined plane 203A and the jet thrust is superimposed in the same direction, forming a significant auxiliary driving effect, directly reducing the load on the main drive motor 102 and achieving significant energy saving. The streamlined design of the cavity head 203 effectively reduces the wind resistance loss generated by friction with air during high-speed rotation. This invention has significant advantages over traditional centrifugal separators 100. Conventional designs typically reduce the flow rate of the separated liquid to prevent the high-speed liquid jet from generating reverse impact resistance on the drum 105, thereby avoiding overload or mechanical damage to the drive motor 102. However, this approach inherently consumes the kinetic energy carried by the liquid, resulting in energy waste and limiting the equipment's ability to handle high-flow-rate materials.

[0026] This invention innovatively incorporates a conical widening section 105A in the heavy phase outlet 110 region of the drum 105. This structure is not for deceleration, but rather utilizes the principle of centrifugal acceleration to further increase the flow velocity of the heavy phase liquid near the wall of the drum 105 as it flows through the conical widening section 105A. The accelerated high-speed liquid is guided by the guide plate 205, enters the C-shaped flow channel of the kinetic energy recovery device through the conical guide hole 112 on the heavy phase weir plate 106, and finally is ejected at high speed from the tangential nozzle 202 in the opposite direction to the rotation of the drum 105. According to the principle of conservation of momentum, the reaction torque generated by this reverse injection is consistent with the rotation direction of the drum 105, thereby actively propelling the drum 105 to rotate and achieving effective recovery and reuse of the liquid's kinetic energy.

[0027] Therefore, this invention not only avoids viewing liquid kinetic energy as a negative factor to be suppressed, but also transforms it into auxiliary driving energy, significantly reducing the load on the drive motor 102 and improving the overall energy efficiency. Simultaneously, because the liquid is efficiently extracted and participates in work, it also reduces turbulence and liquid film accumulation within the cavity, which is beneficial for improving separation clarity and processing throughput. This design concept breaks through the traditional passive protection approach of "deceleration and anti-impact," achieving a technological leap from "energy consumption" to "energy empowerment."

[0028] In summary, this embodiment ensures mass transfer and extraction efficiency through a compact and semi-enclosed stepped premixing system at the feed end. The design of the tapered drum 105 with a gradually expanding diameter optimizes the centrifugal separation force field and phase interface stability. Finally, a tangential kinetic energy recovery device integrated into the weir plate efficiently converts the kinetic energy of the high-pressure heavy phase fluid into mechanical energy to drive the rotation of the drum 105. The entire system achieves seamless integration and synergistic effect of the three functional modules: mixing, separation, and energy recovery, resulting in a dual improvement in system operating efficiency and energy utilization efficiency.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A centrifugal effluent kinetic energy recovery device, characterized in that, The system includes multiple outlet cavities (201) that are uniformly arranged around the heavy phase weir plate (106) and rotate synchronously with it. The outlet cavities (201) are divided into a double-layer structure by an impact baffle plate (204) so ​​that the fluid inside the outlet cavity forms a C-shaped path. The outlet of the C-shaped path forms a nozzle (202) for ejecting fluid in the opposite direction of rotation to the heavy phase weir plate (106), so that the reaction force of the fluid acts positively on the rotation of the outlet cavity (201). The reverse bend of the C-shaped path forms a force surface for positively acting on the rotation of the outlet cavity (201) under the impact of the fluid.

2. The centrifugal effluent kinetic energy recovery device according to claim 1, characterized in that, The force-bearing surface is an inclined surface (203A) set on the inner wall of each outlet cavity (201), and the direction of the inclination of the inclined surface (203A) points to the nozzle (202) side.

3. The centrifugal effluent kinetic energy recovery device according to claim 1 or 2, characterized in that, The jetting direction of the nozzle (202) is tangential to the circle formed by the rotation path of the outlet cavity (201).

4. The centrifugal effluent kinetic energy recovery device according to claim 1 or 2, characterized in that, The outlet cavity (201) has a streamlined head (203) at the end away from the nozzle (202) to reduce wind resistance.

5. The centrifugal effluent kinetic energy recovery device according to claim 1 or 2, characterized in that, The heavy phase weir plate (106) is provided with a guide hole (112) that communicates with the C-shaped path inlet.

6. The centrifugal effluent kinetic energy recovery device according to claim 5, characterized in that, Below the heavy phase weir plate (106), guide plates (205) are installed at intervals and fixed to each other. A guide cavity for containing the fluid on the wall side of the drum (105) is formed between the heavy phase weir plate (106) and the guide plate (205). The drum (105) is provided with a conical widening section (105A) below the heavy phase weir plate (106) so that the liquid inside and outside the drum (105) flows faster and is deflected into the guide hole (112) under the action of the guide plate (205).

7. The centrifugal effluent kinetic energy recovery device according to claim 5, characterized in that, The cross-section of the guide hole (112) is a cone shape with the diameter gradually increasing from bottom to top.

8. A centrifugal separation device, characterized in that, The centrifugal effluent kinetic energy recovery device, as described in any one of claims 1-7, further includes a frame (101) and a drive motor (102) mounted on the frame (101). A housing (103) is fixedly installed inside the frame (101). A drum (105) is rotatably mounted inside the housing (103) via a rotating shaft (104). The working end of the drive motor (102) is connected to the rotating shaft (104) for transmission. Heavy phase inlets are respectively provided on both sides of the bottom of the housing (103). (113) and light phase inlet (114), from top to bottom, heavy phase weir plate (106) and light phase weir plate (107) are arranged sequentially on the top inner wall of the drum (105), heavy phase collection cavity (108) is formed above heavy phase weir plate (106), light phase collection cavity (109) is formed above light phase weir plate (107), heavy phase outlet (110) is formed on heavy phase collection cavity (108), and light phase outlet (111) is formed on light phase collection cavity (109).

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