Adjustable bowl for centrifugal extractor

Abstract

The invention relates to an adjustable drum of a centrifugal extractor, which comprises a drum, a separation channel assembly fixed on the drum for separating heavy and light phases, and an adjusting assembly for adjusting the size of the heavy phase and / or light phase outlet, a main shaft of the centrifugal extractor passing through the center of the drum and being connected with the drum, a plurality of flow uniformizing plates being evenly distributed in the radial direction in the drum, the drum being divided into a plurality of separated cavities by the flow uniformizing plates, and flow uniformizing holes being formed in the flow uniformizing plates. The heavy phase and / or light phase outlets of the adjusting assembly and the separation channel assembly are both waist-shaped holes and are located on the same circle. When the adjusting assembly is rotated, the size of the heavy phase outlet or light phase outlet formed by the superposition of the waist-shaped holes of the adjusting assembly and the separation channel assembly changes. The adjustable drum of the invention can conveniently adjust the size of the heavy phase and / or light phase outlet, thereby simply and quickly adjusting the proportion of the heavy and light phase liquids, meeting the requirements of different materials and occasions, and making the centrifugal extractor more versatile. The flow uniformizing holes formed in the flow uniformizing plates make the operation of the drum more stable and the separation effect better.

Description

Technical Field

[0001] This invention relates to the field of liquid-liquid extraction equipment technology, and more specifically to an adjustable drum of a centrifugal extractor. Background Technology

[0002] A cylindrical centrifugal extractor is a common liquid-liquid extraction device, characterized by high mass transfer efficiency, good extraction effect, and strong centrifugal force, making it suitable for processing materials with small density differences between the two phases, high viscosity, and easy emulsification. The general structure and working principle of a vertical cylindrical centrifugal extractor are as follows: the light phase (organic phase) and the heavy phase (solution containing the extracted substance) enter the mixing chamber from below. After mixing and mass transfer, they enter the upper rotating drum. Under the centrifugal force generated by the high-speed rotation of the drum and its internal blades, the heavier liquid phase gradually moves away from the center of the drum and towards the inner wall of the drum as it flows upwards, while the lighter liquid phase gradually moves towards the center of the drum. Both light and heavy phases then enter their respective collection chambers through their respective channels and are finally discharged from their respective outlets.

[0003] Cylindrical centrifugal extractors are widely used in industries such as petroleum refining, chemical engineering, pharmaceuticals, food processing, and military applications. They handle a wide variety of materials, each with varying requirements for equipment parameters. The light-heavy phase separation ratio is a crucial parameter for centrifugal extractors, highly dependent on the outlet flow rates of the heavy and light phases and the drum rotation speed. Multiple adjustments are required to achieve the desired light-heavy phase separation ratio. However, existing centrifugal extractors do not conveniently adjust the outlet size and flow rate of the heavy or light phase. Adjustments require replacing the heavy-light phase weir plate and related components at the weir opening, which is cumbersome and incurs high material and labor costs. Consequently, existing centrifugal extractors are often dedicated to a single purpose and are not typically used when materials and separation parameters are changed, resulting in poor versatility and wasted resources. Summary of the Invention

[0004] In view of the shortcomings or deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an adjustable drum for a centrifugal extractor, which can easily adjust the size and flow rate of the heavy phase or light phase outlet, thereby adjusting the heavy phase separation ratio and having strong versatility.

[0005] To solve the above-mentioned technical problems, the present invention has the following structure:

[0006] An adjustable drum for a centrifugal extractor is disclosed. The motor output shaft of the centrifugal extractor is connected to the main shaft via a flexible coupling. The adjustable drum is positioned below the main shaft. The main shaft and the drum are connected or integrally formed. The adjustable drum includes the drum itself, a separation channel assembly fixed above the drum for separating heavy and light phases, and an adjustment assembly for adjusting the outlet size of the heavy phase / or light phase. The drum main shaft passes vertically through the center of the drum and is connected to it. The drum includes a thin-walled cylindrical drum body, a bottom drum plate, and a drum flange at the opening of the drum body. The separation channel assembly is mounted on the drum flange. A drum mounting sleeve protruding on the bottom drum plate is keyed to the drum main shaft. A main shaft pressure plate axially limits the drum to fix it to the drum main shaft. Multiple flow equalization plates are radially distributed in the cavity of the drum body, dividing the drum body into multiple partitioned chambers. The flow equalization plates are vertically arranged. The outer edge is fixed to the inner wall of the drum cylinder, and the space between the inner edge is the inner cavity, through which the main shaft of the drum passes. Multiple liquid inlet holes for the mixed liquid are evenly distributed on the same circumference near the outer side of the drum bottom plate. The light phase port and / or heavy phase port of the separation channel assembly from which the heavy and light phase liquids flow out are waist-shaped through holes. A rotatable adjustment component is set on the waist-shaped through hole. The heavy phase port or light phase port on the adjustment component is also a waist-shaped hole, which is on the same circumference as the waist-shaped hole of the heavy phase port or light phase port of the separation channel assembly and has the same diameter. The length of the waist-shaped hole of the adjustment component is greater than or equal to that of the waist-shaped hole of the separation channel assembly. When the adjustment component rotates, the size of the heavy phase port or light phase port formed by the superposition of the waist-shaped hole of the adjustment component and the separation channel assembly changes accordingly. A locking structure is set for the adjustment component. When the adjustment component rotates to the required opening size of the heavy phase port or light phase port, the adjustment component is locked in that position.

[0007] Furthermore, the adjustment components consist of a discharge adjustment disc, an inner pressure plate, and an outer pressure plate. The discharge adjustment disc is an annular thin plate with a waist-shaped hole as a heavy phase inlet or a light phase inlet. The inner pressure plate and the outer pressure plate are respectively installed on the inner and outer circles of the discharge adjustment disc, and both are fixed above the discharge plate of the rotating drum. The shallow grooves at the bottom of the inner and outer pressure plates accommodate the discharge adjustment disc, forming a rotatable connection between the discharge adjustment disc and the discharge plate of the rotating drum at a defined position.

[0008] Furthermore, the locking structure of the adjusting component is as follows: a limiting oblong hole is opened on the discharge adjusting plate, and a limiting pin protrudes from the separating channel component, passing through the limiting oblong hole. The position and length of the limiting oblong hole are such that it cooperates with the limiting pin, allowing the heavy phase or light phase of the separating channel component to change between zero and fully open. The external thread at the end of the limiting pin cooperates with the nut. When the discharge adjusting plate is rotated to the required position, the nut is tightened to fix the position of the discharge adjusting plate.

[0009] Furthermore, the locking structure consists of two sets of limiting waist-shaped holes and limiting pins, which are symmetrically arranged relative to the center. The central angle (b) of the limiting waist-shaped hole is equal to the central angle (a) of the waist-shaped hole of the heavy phase port or light phase port of the separation channel assembly. The limit positions of the forward and reverse rotation of the discharge adjustment disc defined by the locking structure are exactly the positions where the opening of the heavy phase port or light phase port of the separation channel assembly is zero and the maximum value.

[0010] The adjustable drum of the centrifugal extractor described in any of the above embodiments includes a separation channel assembly comprising a drum discharge plate and a discharge plate bottom cover plate below it, both of which are stacked and fixed on the drum flange. The drum discharge plate has a disc-shaped structure with a central hole fitted onto the drum main shaft. A cross-shaped wide groove is cut from the center outwards from the bottom of the disc, extending to the edge of the disc. The wide groove does not penetrate through the disc, leaving the farthest end wall surface. On the same circumference near the outer edge of the four isolated islands separated by the cross-shaped wide groove, a waist-shaped through hole is cut as a heavy phase inlet. The bottom cover of the discharge pan is a thin circular plate with an inner hole in the center and four waist-shaped through holes far from the center. These holes coincide with the position of the discharge pan on the drum and are the same size. The outer diameter of the bottom cover of the discharge pan is smaller than the inner diameter of the farthest wall of the cross groove. The gap between the outer diameter and the inner diameter is the light phase inlet. The light phase liquid flows out from the light phase inlet through the inner hole of the bottom cover of the discharge pan and the cross-shaped wide groove of the discharge pan on the drum. The heavy phase liquid flows out from the waist-shaped heavy phase inlet that coincides on the bottom cover of the discharge pan and the discharge pan on the drum. An adjustment component is installed at the heavy phase inlet.

[0011] Furthermore, multiple narrow and long through holes are independently opened from top to bottom at the connection between each flow equalization plate and the inner wall of the drum cylinder to serve as flow equalization holes, so that each partition cavity is connected.

[0012] Furthermore, the adjustable drum of the centrifugal extractor also includes a main shaft clamping sleeve disposed in the central hole of the separation channel assembly. The main shaft clamping sleeve is fitted on the main shaft of the drum. The outer surface of the main shaft clamping sleeve is inverted conical and matches the inverted conical through hole in the center of the separation channel assembly. The flange on the upper part of the main shaft clamping sleeve is fixed to the separation channel assembly with fasteners.

[0013] Preferably, the drum body is fixed to the drum base plate, the drum body to the drum flange, and the drum body to the flow equalization plate by welding.

[0014] The adjustment handle is fixed on the upper part of the discharge adjustment plate.

[0015] Preferably, the upper middle part of the flow equalization plate is connected by a horizontally arranged annular upper connecting plate, and the lower inner edge of the flow equalization plate is connected by a horizontally arranged lower connecting plate of the annular flow equalization plate at the center of the drum body.

[0016] Compared with the prior art, the advantages of the present invention are as follows:

[0017] The adjustable drum of the centrifugal extractor of the present invention is equipped with an adjustment component at the outlet of the heavy phase and / or light phase, so that the size of the outlet of the heavy phase and / or light phase is adjustable, that is, the flow rate of the heavy phase liquid and the flow rate of the light phase liquid are adjustable. Moreover, the ratio of heavy phase liquid can be easily and quickly adjusted by simply loosening and rotating the adjustment component, without the need for cumbersome replacement of the heavy and light phase weir plates and related components of the weir. This can meet the needs of different materials and occasions, which not only greatly reduces material and labor costs, but also makes the centrifugal extractor more versatile.

[0018] The flow equalization plate of the present invention has flow equalization holes on the outside, which connects the various partition cavities inside the drum. This can avoid vibration caused by the loss of dynamic balance of the drum due to uneven deposition of heavy phase, making the high-speed operation of the drum more stable and the separation effect of heavy and light phases better.

[0019] The present invention connects the drum discharge disc and the drum main shaft through a main shaft clamping sleeve with an outer conical surface, which improves centering and strengthens load-bearing capacity. Attached Figure Description

[0020] Figure 1 : An attached view of the adjustable drum of the present invention;

[0021] Figure 2 : A bottom view of the separation channel assembly of the present invention;

[0022] Figure 3 : Figure 1 AA section view;

[0023] Figure 4 : Figure 3 Enlarged view of B;

[0024] Figure 5 : A bottom view of the rotary drum discharge plate of the present invention;

[0025] Figure 6 : A top view of the bottom cover plate of the discharge tray of the present invention;

[0026] Figure 7 : A top view of the discharge regulating disc of the present invention;

[0027] Figure 8 : Top view of the drum of the present invention. Detailed Implementation

[0028] The following will further explain the concept, specific structure, and technical effects of the present invention in conjunction with the accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention.

[0029] The motor output shaft of the centrifugal extractor is connected to the main shaft via a flexible coupling. An adjustable drum 200 is installed below the main shaft. The main shaft is connected to the main shaft 260 of the drum, or they are integrally formed. The motor drives the main shaft to drive the adjustable drum 200 to rotate at high speed, thereby achieving the separation of light and heavy phase liquids.

[0030] Figure 1 This is a top view of the adjustable drum 200. Figure 3 for Figure 1 AA section view, from Figure 3 As can be seen, the adjustable drum 200 of the centrifugal extractor includes a drum 210, a separation channel assembly 220 fixed above the drum 210 for separating the heavy and light phases, and an adjustment assembly 230 for adjusting the size of the heavy phase / or light phase outlet. The main shaft 260 of the drum passes vertically through the center of the drum 210 and is connected to it.

[0031] Figure 3 As shown, the drum 210 includes a thin-walled cylindrical drum body 211, a drum base plate 212 is fixed at the bottom of the drum body 211, a drum flange 213 is fixed at the opening of the drum body 211, and a separation channel assembly 220 is installed on the drum flange 213.

[0032] A cylindrical drum mounting sleeve 215 is welded to the center of the upper part of the drum base plate 212. The drum main shaft 260 passes through the center of the drum body 211 and the inner hole of the drum mounting sleeve 215. The drum mounting sleeve 215 is keyed to the drum main shaft 260. The lower main shaft pressure plate 216 presses the drum mounting sleeve 215 axially onto the shoulder of the drum main shaft 260 and fixes the main shaft pressure plate 216 to the lower shaft end of the drum main shaft 260. In this way, the lower part of the drum 210 is connected to the drum main shaft 260 through the drum mounting sleeve 215.

[0033] Figure 8 This is a top view of the drum 210. Multiple liquid inlet holes 219 are evenly distributed on the same circumference near the outer side of the drum base plate 212.

[0034] Figure 3 and Figure 8 As shown, multiple flow equalization plates 214 are evenly distributed radially in the cavity of the drum body 211, dividing the drum body 211 into multiple partitioned cavities. The flow equalization plates 214 are vertically arranged, with their outer edges fixed to the inner wall of the drum body 211, and the space between the inner edges is the inner cavity 218, through which the main shaft 260 of the drum passes.

[0035] Preferably, each flow equalization plate 214 has multiple narrow and elongated through holes from top to bottom at the connection between it and the inner wall of the drum body 211, serving as flow equalization holes 217. This allows the various partition chambers to be connected. After the mixed liquid is drawn into the drum body 211 through the liquid inlet on the bottom plate 212 of the drum, it is dispersed in each partition chamber. If, as in the prior art, the outer sides of the partition chambers are not connected, the uneven distribution of materials in each partition chamber will affect the dynamic balance of the drum 210 and cause severe vibration of the machine. However, by setting the flow equalization holes 217, the partition chambers are connected to each other, and the materials are evenly distributed, effectively improving the above problems.

[0036] Preferably, the upper middle section of the flow equalization plate 214 is connected by a horizontally arranged annular upper connecting plate, and the lower inner side of the flow equalization plate 214 is connected by a horizontally arranged annular lower connecting plate at the center of the drum body 211. This improves the strength of the flow equalization plate 214.

[0037] Preferably, the drum body 211 and the drum base plate 212, the drum body 211 and the drum flange 213, the drum body 211 and the flow equalization plate 214, the flow equalization plate 214 and the upper connecting plate of the flow equalization plate, and the lower connecting plate of the flow equalization plate are all fixed by welding.

[0038] The separation channel assembly 220 from which the heavy and light phase liquids flow out has a light phase port 224 and / or a heavy phase port 223 that are oblong-shaped through holes. A rotatable adjustment component 230 is provided on the oblong-shaped through hole. The heavy phase port 223 or light phase port 224 on the adjustment component 230 is also an oblong-shaped hole, which is on the same circumference as the oblong-shaped hole of the heavy phase port 223 or light phase port 224 of the separation channel assembly 220 and has the same diameter. The length of the oblong-shaped hole of the adjustment component 230 is greater than or equal to that of the oblong-shaped hole of the separation channel assembly 220. When the adjustment component 230 rotates, the size of the heavy phase port 223 or light phase port 224 formed by the superposition of the oblong-shaped hole of the adjustment component 230 and the separation channel assembly 220 changes accordingly, so as to adjust the size of the heavy phase port 223 or light phase port 224 of the separation channel assembly 220, thereby adjusting the flow rate of the heavy phase liquid or the light phase liquid, and thus adjusting the separation ratio of the light and heavy phases.

[0039] See Figure 4 The adjustment assembly 230 includes a discharge adjustment disc 231 and a limiting part for the discharge adjustment disc 231.

[0040] Specifically, Figure 7 As shown, the discharge regulating plate 231 is an annular thin plate with a waist-shaped hole as the phase inlet 223. The waist-shaped hole and the waist-shaped through hole of the separation channel assembly 220 are on the same circumference and have the same diameter. The length of the waist-shaped hole of the discharge regulating plate 231 is greater than or equal to that of the waist-shaped hole of the separation channel assembly 220. Figure 4In the process, an inner pressure plate 232 and an outer pressure plate 233 are respectively provided on the inner and outer circles of the discharge regulating plate 231. Both are fixed above the separation channel assembly 220. Shallow grooves are opened on the lower outer side of the inner pressure plate 232 and the lower inner side of the outer pressure plate 233 to accommodate the discharge regulating plate 231. The inner pressure plate 232 and the outer pressure plate 233 restrict the position of the discharge regulating plate 231, but the discharge regulating plate 231 can rotate in the shallow groove, forming a rotatable connection between the discharge regulating plate 231 and the separation channel assembly 220 at a certain position.

[0041] See Figure 1 and Figure 7 A locking structure 240 is provided between the discharge regulating disc 231 and the separation channel assembly 220 to limit and fix the rotatable discharge regulating disc 231. Specifically, a limiting oblong hole 241 is opened on the discharge regulating disc 231, and a limiting pin 242 protrudes from the separation channel assembly 220, passing through the limiting oblong hole 241. The position and length of the limiting oblong hole 241 are such that it cooperates with the limiting pin 242, allowing the heavy phase port 223 or light phase port 224 of the separation channel assembly 220 to change between zero and fully open. The external thread at the end of the limiting pin 242 cooperates with a nut. The nut is not tightened. When the discharge regulating disc 231 rotates to the desired position, the nut is tightened to clamp the discharge regulating disc 231 and fix its position.

[0042] See Figure 1 The locking structure 240 consists of two sets of limiting oblong holes 241 and limiting pins 242, which are symmetrically arranged relative to the center. The central angle (b) of the limiting oblong hole 241 is equal to the central angle (a) of the oblong hole of the heavy phase port 223 or light phase port 224 of the separation channel assembly 220. The extreme positions of the forward and reverse rotation of the discharge regulating disc 231 defined by the locking structure 240 are exactly the positions where the opening of the heavy phase port 223 or light phase port 224 of the separation channel assembly 220 is at zero and at its maximum value.

[0043] To facilitate the rotation of the discharge regulating disc 231, a handle is installed on the discharge regulating disc 231. Figure 4 ).

[0044] like Figure 3 and Figure 4 As shown, in one embodiment, the separation channel assembly 220 includes a rotary drum discharge disc 221 (see part drawing). Figure 5 ) and the bottom cover plate 222 of the discharge tray below it (see part drawing) Figure 6 Both are stacked and fixed on the drum flange 213, and the drum spindle 260 passes through the inner holes of both.

[0045] The discharge disc 221 of the rotary drum has a disc-shaped structure. The central hole is fitted onto the main shaft 260 of the rotary drum. A cross-shaped wide groove is opened from the center outward on the bottom of the disc. The wide groove extends to the edge of the disc but does not penetrate through, leaving the farthest end wall. On the same circumference near the outer side of the four isolated islands separated by the cross-shaped wide groove, a waist-shaped through hole is opened as a phase inlet 223.

[0046] See Figure 6 The bottom cover plate 222 of the discharge plate is a thin circular plate with an inner hole in the center and four waist-shaped through holes far from the center. The position of the holes coincides with that of the discharge plate 221 of the rotating drum, and the holes are the same size.

[0047] See Figure 2 and Figure 3 The gap between the outer circle of the discharge pan bottom cover plate 222 and the farthest end wall of the cross groove of the drum discharge pan 221 is the light phase opening 224. Therefore, the outer diameter of the discharge pan bottom cover plate 222 is smaller than the inner diameter of the farthest end wall of the cross groove.

[0048] Light phase liquid flows out from light phase port 224 through the inner hole of discharge pan bottom cover plate 222 and cross-shaped wide groove of drum discharge pan 221. Heavy phase liquid flows out through the corresponding waist-shaped heavy phase port 223 on discharge pan bottom cover plate 222 and drum discharge pan 221, away from the center. Adjustment component 230 is provided at heavy phase port 223.

[0049] like Figure 3 As shown, the adjustable drum 200 also includes a main shaft clamping sleeve 250 disposed between the inner hole of the drum discharge plate 221 and the main shaft 260 of the drum, and the main shaft clamping sleeve 250 is fitted on the main shaft 260 of the drum.

[0050] Specifically, the outer surface of the main shaft clamping sleeve 250 is inverted conical, which mates with the inverted conical inner hole at the center of the drum discharge plate 221. The flange on the upper part of the main shaft clamping sleeve 250 is fixed to the drum discharge plate 221 with fasteners. The tighter the fasteners are tightened, the more the main shaft clamping sleeve 250 is pressed downward, achieving a conical interference fit connection between the drum discharge plate 221 and the drum main shaft 260, thereby connecting the upper part of the adjustable drum 200 to the drum main shaft 260. The conical connection provides good centering, high load-bearing capacity, and more reliable connection.

[0051] The adjustable drum 200 of the centrifugal extractor of the present invention draws the mixture into the cavity of the drum 210 through the mixture inlet 219 on the outer side of the drum bottom plate 212, and disperses it in each partition cavity. Because the flow equalization plate 214 has flow equalization holes 217 on its outer edge, the mixture is evenly distributed in each partition cavity. The drum 210 rotates at high speed, and the flow equalization plate 214 pushes the mixture to flow at high speed. Under the action of centrifugal force, the heavier phase liquid with a higher specific gravity gradually moves towards the inner wall of the drum body 211 during the upward flow. The light phase liquid gradually concentrates in the inner cavity 218 near the main shaft 260 of the drum 210, while the heavy phase liquid flows out from the heavy phase port 223 of the waist-shaped through hole formed by the bottom cover plate 222 of the discharge plate, the discharge plate 221 of the drum, and the discharge regulating plate 231. The opening size of the heavy phase port 223 is adjustable. The light phase liquid flows out from the light phase port 224 formed by the cross-shaped wide groove of the discharge plate 221 and the bottom cover plate 222 of the discharge plate (and the outer wall of the drum body 211) through the center hole of the discharge plate bottom plate, thus realizing the separation of heavy and light phase liquids.

[0052] The adjustable drum 200 of the centrifugal extractor of the present invention is provided with an adjustment component 230 at the outlet of the heavy phase and / or light phase, so that the size of the outlet of the heavy phase and / or light phase is adjustable, that is, the flow rate of the heavy phase liquid and the flow rate of the light phase liquid are adjustable. Moreover, the ratio of heavy phase liquid can be easily and quickly adjusted by simply loosening and rotating the adjustment component 230, without the need for cumbersome replacement of the heavy and light phase weir plates and related components of the weir, which can meet the needs of different materials and occasions. This not only greatly reduces material and labor costs, but also makes the centrifugal extractor more versatile.

[0053] The flow equalization plate 214 of the present invention has flow equalization holes 217 on the outer side, which connects the various partition cavities in the drum 210. This can avoid vibration caused by the loss of dynamic balance of the drum 210 due to uneven deposition of heavy phase, and the high-speed operation of the drum 210 is more stable, and the separation effect of heavy and light phases is better.

[0054] The rotary drum discharge plate 221 and the rotary drum main shaft 260 of the present invention are connected by a main shaft clamping sleeve 250 with an outer conical surface, which has better centering and stronger load-bearing capacity.

[0055] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. An adjustable drum for a centrifugal extractor, wherein the motor output shaft of the centrifugal extractor is connected to the main shaft via a flexible coupling, and an adjustable drum is disposed below the main shaft. The main shaft is connected to the main shaft (260) of the drum, or the two are integrally formed, characterized in that... The adjustable drum includes a drum (210), a separation channel assembly (220) fixed above the drum (210) for separating heavy and light phases, and an adjustment assembly (230) for adjusting the size of the heavy phase / or light phase outlet. The main shaft (260) of the drum passes vertically through the center of the drum (210) and is connected to it. The drum (210) includes a thin-walled cylindrical drum body (211), a bottom drum plate (212), and a drum flange (213) at the opening on the drum body (211). The separation channel assembly (220) is mounted on the drum flange (213). The drum mounting sleeve (215) protruding on the bottom drum plate (212) is keyed to the drum spindle (260). The spindle pressure plate (216) axially limits the drum (210) to fix the drum (210) on the drum spindle (260). Multiple flow equalization plates (214) are radially distributed in the cavity of the drum body (211), dividing the drum body (211) into multiple partitioned cavities. The flow equalization plates (214) are vertically arranged, with their outer edges fixed to the inner wall of the drum body (211). The space between the inner edges is an inner cavity (218), through which the main shaft (260) of the drum passes. Multiple mixed liquid inlet holes (219) are evenly distributed on the same circumference near the outer side of the drum bottom plate (212). The light phase inlet (224) and / or heavy phase inlet (223) of the separation channel assembly (220) from which the heavy and light phase liquids flow are waist-shaped through holes. The waist-shaped through holes are provided with... The rotating adjustment component (230) has a heavy phase port (223) or light phase port (224) on it, which is also an oblong hole. This oblong hole is on the same circumference as the oblong hole of the heavy phase port (223) or light phase port (224) of the separation channel component (220), and has the same diameter. The length of the oblong hole of the adjustment component (230) is greater than or equal to that of the oblong hole of the separation channel component (220). When the adjustment component (230) rotates, the size of the heavy phase port (223) or light phase port (224) formed by the superposition of the oblong holes of the adjustment component (230) and the separation channel component (220) changes accordingly. A locking structure (240) is provided for the adjustment component (230) so that when the adjustment component (230) is rotated to the desired opening size of the heavy phase port (223) or the light phase port (224), the adjustment component (230) is locked in that position.

2. The adjustable drum of the centrifugal extractor according to claim 1, characterized in that, The adjustment assembly (230) consists of a discharge adjustment plate (231), an inner pressure plate (232), and an outer pressure plate (233). The discharge adjustment plate (231) is an annular thin plate with a waist-shaped hole as the heavy phase port (223) or the light phase port (224). The inner pressure plate (232) and the outer pressure plate (233) are respectively set at the inner and outer circles of the discharge adjustment plate (231) and are fixed above the drum discharge plate (221). The shallow grooves at the lower part of the inner pressure plate (232) and the outer pressure plate (233) accommodate the discharge adjustment plate (231), forming a rotatable connection between the discharge adjustment plate (231) and the drum discharge plate (221) at a certain position.

3. The adjustable drum of the centrifugal extractor according to claim 2, characterized in that, The locking structure (240) of the adjusting component (230) is as follows: a limiting waist-shaped hole (241) is opened on the discharge adjusting plate (231), and a limiting pin (242) protrudes from the separating channel component (220) and passes through the limiting waist-shaped hole (241). The position and length of the limiting waist-shaped hole (241) are such that it cooperates with the limiting pin (242), so that the heavy phase port (223) or the light phase port (224) of the separating channel component (220) can change between zero and fully open. The external thread at the end of the limiting pin (242) cooperates with the nut. When the discharge adjusting plate (231) is rotated to the required position, the nut is tightened to fix the position of the discharge adjusting plate (231).

4. The adjustable drum of the centrifugal extractor according to claim 3, characterized in that, The locking structure (240) consists of two sets of limiting waist-shaped holes (241) and limiting pins (242), which are symmetrically arranged relative to the center. The second central angle (b) of the limiting waist-shaped hole (241) is equal to the first central angle (a) of the waist-shaped hole of the heavy phase port (223) or the light phase port (224) of the separation channel assembly (220). The limit positions of the forward and reverse rotation of the discharge regulating disc (231) defined by the locking structure (240) are exactly the positions where the opening of the heavy phase port (223) or the light phase port (224) of the separation channel assembly (220) is zero and the maximum value.

5. The adjustable drum of the centrifugal extractor according to any one of claims 1-4, characterized in that, The separation channel assembly (220) includes a drum discharge plate (221) and a discharge plate bottom cover plate (222) below it, which are stacked and fixed on the drum flange (213). The drum discharge plate (221) is a disc-shaped structure with a central hole fitted onto the drum main shaft (260). A cross-shaped wide groove is opened from the center outward on the bottom of the disc, extending to the edge of the disc. The wide groove does not penetrate through the disc, leaving the farthest end wall. On the same circumference near the outer side of the four islands separated by the cross-shaped wide groove, a waist-shaped through hole is opened as the phase port (223). The discharge plate bottom cover plate (222) is a circular thin plate with an inner hole in the center and an outer hole away from the center. Four waist-shaped through holes are opened at the bottom, which coincide with the position of the drum discharge plate (221) and are of the same size. The outer diameter of the bottom cover plate (222) of the discharge plate is smaller than the inner diameter of the farthest wall of the cross groove. The gap between the outer diameter and the inner diameter is the light phase port (224). The light phase liquid flows out from the light phase port (224) through the inner hole of the bottom cover plate (222) of the discharge plate and the cross-shaped wide groove of the drum discharge plate (221). The heavy phase liquid flows out from the waist-shaped heavy phase port (223) that coincides on the bottom cover plate (222) of the discharge plate and the drum discharge plate (221). The adjustment component (230) is set at the heavy phase port (223).

6. The adjustable drum of the centrifugal extractor according to claim 1, characterized in that, Each of the flow equalization plates (214) has multiple narrow and long through holes (217) independently opened from top to bottom at the connection between the inner wall of the drum body (211) and the flow equalization plate (214), so that the various partition cavities are connected.

7. The adjustable drum of the centrifugal extractor according to claim 1, characterized in that, It also includes a spindle clamping sleeve (250) disposed in the central hole of the separation channel assembly (220). The spindle clamping sleeve (250) is fitted on the drum spindle (260). The outer surface of the spindle clamping sleeve (250) is inverted conical and cooperates with the inverted conical through hole in the center of the separation channel assembly (220). The flange on the upper part of the spindle clamping sleeve (250) is fixed on the separation channel assembly (220) with fasteners.

8. The adjustable drum of the centrifugal extractor according to claim 1, characterized in that, The drum body (211) is fixed to the drum base plate (212), the drum body (211) is fixed to the drum flange (213), and the drum body (211) is fixed to the flow equalization plate (214) by welding.

9. The adjustable drum of the centrifugal extractor according to claim 2, characterized in that, An adjustment handle is fixed on the upper part of the discharge adjustment plate (231).

10. The adjustable drum of the centrifugal extractor according to claim 1, characterized in that, The upper middle part of the flow equalization plate (214) is connected by a horizontally arranged annular upper connecting plate, and the lower inner edge of the flow equalization plate (214) is connected by a horizontally arranged lower connecting plate of the annular flow equalization plate at the center of the drum body (211).

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