Anti-clogging flush centrifuge

Abstract

The utility model discloses a kind of anti-clogging flush centrifuges, for pharmaceutical intermediates production.Aiming at the problem that traditional centrifuge is easily blocked due to high concentration of material and viscosity, it comprises shell, centrifugal separation unit, driving unit and anti-blocking unit;Anti-blocking unit contains pressurizing cylinder (inner wall is equipped with pressurizing cavity, turbine blade and elastic cleaning assembly) and rotation type flushing assembly of centrifugal cylinder circumferential wall coaxially nested in centrifugal cylinder.By the "flushing-scraping" synergistic mechanism of turbine-driven turbulent flow and self-adaptive scraping of elastic cleaning sheet, combined with full-circle dead angle-free flushing, efficient anti-blocking is achieved, ensuring production continuity and cleanliness, suitable for pharmaceutical intermediates solid-liquid separation.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical intermediate production equipment technology, and in particular to a clogging-resistant rinsing centrifuge. Background Technology

[0002] In the production of pharmaceutical intermediates, separation and purification are key processes. The core objective is to efficiently separate the target components from impurities in the reaction products to meet the purity requirements of subsequent synthesis steps. Centrifugation technology is widely used in the solid-liquid separation stage of pharmaceutical intermediates (such as solid-phase separation after crystallization and precipitation) due to its high separation efficiency and wide applicability. However, pharmaceutical intermediate materials typically have the following characteristics: 1. High concentration of solids: Some reaction-generated intermediate crystals have high density and small particle size (such as microcrystals or nanoparticles), which easily adhere tightly to the inner wall of the centrifuge tube or drum during centrifugation, forming a dense deposition layer; 2. Viscosity or tendency to agglomerate: Intermediate materials containing polysaccharides, proteins, or multifunctional groups (such as antibiotic intermediates and amino acid derivatives) are prone to adhesion due to intermolecular forces, and may even form clumps under centrifugal force, increasing the risk of blockage; 3. High cleanliness requirements: Pharmaceutical intermediates must comply with strict GMP (Good Manufacturing Practice). If residual materials are not completely removed during the separation process, cross-contamination may occur, affecting batch-to-batch quality consistency.

[0003] While traditional centrifuges can achieve basic solid-liquid separation, they have the following significant drawbacks for the pharmaceutical intermediates mentioned above: 1. Prone to clogging: Material adhesion or clump accumulation on the inner wall of the centrifuge drum and the surface of the rotor reduces the effective volume of the separation chamber, and the separation efficiency decreases significantly with prolonged operation, requiring frequent shutdowns for manual cleaning, which seriously affects production continuity. 2. Difficult to clean: The rinsing structure of traditional centrifuges is mostly fixed nozzles, with a limited rinsing range, making it difficult to cover all areas of the inner wall. Moreover, the rinsing pressure is not adjustable, making it unable to meet the cleaning needs of materials with different viscosities or particle sizes. 3. Insufficient sealing reliability: The connection between the separation chamber and the drive unit is prone to material leakage or rinsing medium leakage, leading to material contamination or equipment corrosion, which does not meet the strict cleanliness requirements of pharmaceutical production.

[0004] Therefore, there is an urgent need to develop a special centrifuge that is tailored to the characteristics of pharmaceutical intermediate production, has a highly efficient anti-clogging function, and meets cleanliness requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a clogging-proof rinsing centrifuge.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses an anti-clogging rinsing centrifuge, comprising a shell, a centrifugal separation unit, a drive unit, and an anti-clogging unit. The centrifugal separation unit includes a centrifugal drum coaxially arranged on a horizontal axis within the shell. The centrifugal drum has an openable front cover at its front end and a fixed rear cover at its rear end. A rotating drum is rotatably mounted inside the centrifugal drum via a bearing assembly. The front end of the rotating drum passes through the openable front cover, and the rear end passes through the fixed rear cover and is connected to the drive unit via a transmission mechanism. The shell has a feed inlet on the top side near the front cover, a light phase outlet on the bottom side near the rear cover, and a heavy phase outlet on the top side near the rear cover. The anti-clogging unit includes a pressure cylinder coaxially nested within the centrifugal drum. The inner wall of the pressure cylinder is divided into at least three pressure chambers along the axial direction, and each pressure chamber is equipped with turbine blades and a cleaning assembly. At least four rinsing assemblies are evenly distributed circumferentially on the circumferential wall of the centrifugal drum. The drive unit is fixed to the outside of the rear end of the shell and connected to the rear end of the rotating drum via a transmission mechanism.

[0007] As a preferred technical solution of this utility model, the cleaning assembly includes a cleaning disc coaxially fixed to the inner wall of the pressure cylinder. At least three mounting seats are evenly provided on the outer circumference of the cleaning disc, and a cleaning blade is hinged in each mounting seat by a pin. The cleaning blade is an arc-shaped plate structure with a wear-resistant coating on its inner surface and its outer surface abutting against the inner wall of the centrifuge cylinder.

[0008] As a preferred technical solution of this utility model, the cleaning blade is made of elastic material, and its contact pressure with the inner wall of the centrifuge cylinder can be adaptively adjusted by adjusting the preload of the torsion spring on the adjusting pin; the mounting base opening is provided with an elastic limiting block to limit the swing angle range of the cleaning blade around the pin.

[0009] As a preferred embodiment of this utility model, the rinsing assembly includes a rinsing head embedded in the circumferential wall of the centrifuge cylinder, the spray direction of the rinsing head being along the radial direction of the centrifuge cylinder; the rinsing head is connected to an external water tank via a water supply pipe, the water supply pipe being equipped with a solenoid valve and a flow regulating valve; the rinsing head is a rotary nozzle structure, which integrates a micro turbine inside, and can be driven to rotate around its own axis by the flow of the rinsing medium, the spray range covering the entire circumference of the inner wall of the centrifuge cylinder; the rinsing assembly is uniformly distributed along the circumference of the centrifuge cylinder.

[0010] As a preferred embodiment of this utility model, the drive unit includes a drive motor fixed to the rear end of the housing, the output shaft of the drive motor is connected to the input shaft of the reducer through a flexible coupling, and the output shaft of the reducer is connected to the rear end of the drum through a spline; the reducer is fixed to a horizontal mounting base by a shock-absorbing bracket.

[0011] As a preferred technical solution of this utility model, the front end of the pressure cylinder is sealed to the front end cover through a front seal, and the rear end is sealed to the rear end cover through a rear seal; the front seal and the rear seal are both double-end mechanical seal structures, and are respectively disposed at the contact interface between the front end cover and the pressure cylinder and the contact interface between the rear end cover and the pressure cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Through the integrated pressurizing cylinder and multi-chamber collaborative design, combined with the fluid drive of the turbine blades and the mechanical scraping of the cleaning components, a dual anti-clogging mechanism of "flushing-scraping" is formed: the turbine blades in the pressurizing cylinder rotate with the fluid flow, generating local turbulence and enhancing the impact force of the flushing medium, loosening the adhering particles on the inner wall of the centrifuge cylinder; the elastic cleaning blades of the cleaning components are hinged to the cleaning disc by pins, and with the adaptive preload of the torsion spring, they can dynamically conform to the inner wall of the centrifuge cylinder, scraping away stubborn deposits (such as microcrystalline clumps or sticky materials) in real time, preventing clogging. This design extends the continuous operation time of the centrifuge by 3-5 times, significantly reduces the frequency of downtime for cleaning, and significantly improves production efficiency; 2. At least four rotating flushing components are evenly distributed on the circumferential wall of the centrifuge cylinder. Each flushing head has a built-in micro-turbine that rotates automatically via the flow of the flushing medium, achieving 360° radial spraying without dead angles. Combined with a flow regulating valve for precise control of flushing pressure and flow (e.g., increasing pressure for high-viscosity materials and decreasing pressure for fragile particles), this thoroughly removes residual materials while avoiding damage to the centrifuge cylinder's inner wall from high-pressure flushing. Furthermore, the independent piping design for the flushing medium (such as purified water or sterile gas), combined with a double-end mechanical seal structure, ensures no leakage between the separation chamber and the external environment, complying with GMP's stringent restrictions on cross-contamination. 3. The adjustable preload of the cleaning blade's elastic material (such as medical-grade silicone) and the torsion spring at the pin shaft allows for dynamic adjustment of contact pressure based on material characteristics (such as particle hardness and viscosity), ensuring cleaning effectiveness while reducing component wear. The elastic limit block on the mounting base further restricts the cleaning blade's swing amplitude, preventing failure due to overload deformation. This design extends the equipment maintenance cycle to more than twice that of traditional centrifuges, and the cleaning blade replacement is simple, significantly reducing maintenance costs. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the present invention; Figure 3This is a top view of the present invention; Figure 4 This is a schematic diagram of the cleaning component of this utility model; In the diagram: 1. Outer shell; 2. Centrifuge drum; 3. Rotary drum; 4. Pressurizing cylinder; 5. Flushing assembly; 11. Feed inlet; 12. Heavy phase outlet; 13. Light phase outlet; 21. Front cover; 22. Rear cover; 31. Bearing assembly; 41. Pressurizing chamber; 42. Turbine blades; 43. Cleaning assembly; 44. Front seal; 45. Rear seal; 51. Flushing head; 52. Water supply pipe; 53. Solenoid valve; 54. Flow regulating valve; 61. Drive motor; 62. Flexible coupling; 63. Reducer; 64. Shock absorber bracket; 65. Transmission mechanism; 431. Cleaning disc; 432. Cleaning blade; 433. Pin; 434. Mounting base; 4331. Torsion spring; 4341. Flexible limit block. Detailed Implementation

[0014] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0015] In the attached diagram, all identical reference numerals refer to the same components.

[0016] Example 1: Solid-liquid separation scenario of pharmaceutical intermediate microcrystalline particles like Figures 1-4 As shown, the anti-clogging rinsing centrifuge of this embodiment is used to separate pharmaceutical intermediate crystal suspensions containing microcrystalline particles with a particle size of 0.1-0.5mm. Its main structure consists of four parts: shell 1, centrifugal separation unit, drive unit and anti-clogging unit.

[0017] Centrifugal Separation Unit: The outer shell 1 is a rectangular hollow structure, with a horizontally arranged centrifuge cylinder 2 coaxially arranged inside. A front cover 21 (manually openable for maintenance) is installed at the front end of the centrifuge cylinder 2 via a snap-fit ​​structure, and a rear cover 22 is fixedly connected to the rear end (welded to the outer shell 1). A drum 3 is rotatably mounted inside the centrifuge cylinder 2 via a deep groove ball bearing assembly 31. The drum 3 is a thin-walled metal cylindrical structure, with its front end extending through the front cover 21 to the outside of the outer shell 1 (in contact with the material to be separated), and its rear end passing through the fixed rear cover 22 and connected to the drive unit. An inlet 11 is located near the front cover 21 at the top of the outer shell 1 (through which material enters the centrifuge cylinder 2), a light phase outlet 13 is located below the fixed rear cover 22 at the bottom (through which the separated supernatant is discharged), and a heavy phase outlet 12 is located above the fixed rear cover 22 at the top (through which deposited microcrystalline particles are discharged).

[0018] Please see the appendix Figure 2The drive unit, fixed to the rear end of the housing 1, includes a drive motor 61, a flexible coupling 62, a reducer 63, and a shock-absorbing bracket 64. The output shaft of the drive motor 61 is connected to the input shaft of the reducer 63 via the flexible coupling 62 (to buffer motor vibration). The output shaft of the reducer 63 is connected to the rear end of the drum 3 via a spline (forming a transmission mechanism 65) (to transmit torque and allow slight axial displacement). The reducer 63 is fixed to a horizontal mounting base via the shock-absorbing bracket 64 (composed of a rubber pad and a metal frame) (to reduce the impact of equipment vibration on the separation effect).

[0019] Anti-clogging unit: includes a pressure cylinder 4 coaxially nested inside the centrifuge cylinder 2 and a rinsing assembly 5 distributed along the circumferential wall of the centrifuge cylinder 2.

[0020] Please see the appendix Figure 2 The pressurizing cylinder 4 is a thin-walled cylindrical structure. Its front end is sealed to the front cover 21 via a front seal 44 (a double-end mechanical seal consisting of a rotating ring, a stationary ring, and a spring), and its rear end is sealed to the fixed rear cover 22 via a rear seal 45 (with the same structure as the front seal 44) (ensuring that a sealed chamber is formed inside the pressurizing cylinder 4). The inner wall of the pressurizing cylinder 4 is divided into at least three pressurizing chambers 41 along the axial direction (three in this embodiment). Each pressurizing chamber 41 is equipped with a turbine blade 42 (an arc-shaped blade that rotates with the fluid flow) and a cleaning assembly 43.

[0021] Please see the appendix Figure 4 The cleaning assembly 43 includes a cleaning disc 431 (a disc-shaped metal structure) coaxially fixed to the inner wall of the pressure cylinder 4. At least three mounting seats 434 (three in this embodiment) are evenly distributed on the outer circumference of the cleaning disc 431. A cleaning blade 432 is hinged to each mounting seat 434 via a pin 433. The cleaning blade 432 has an arc-shaped plate structure, with its inner surface coated with a medical-grade wear-resistant coating (to enhance wear resistance), and its outer surface abutting against the inner wall of the centrifuge cylinder 2 (directly contacting and scraping away deposits). A torsion spring 4331 (with adjustable preload) is fitted onto the pin 433 to adjust the contact pressure between the cleaning blade 432 and the inner wall of the centrifuge cylinder 2. An elastic limiting block 4341 (made of rubber) is provided at the opening of the mounting seat 434 to limit the swing angle of the cleaning blade 432 around the pin 433 (to prevent excessive deformation).

[0022] Rinse assembly 5: evenly distributed along the circumference of the centrifugal cylinder 2 wall at least four (four in this embodiment), each rinse assembly 5 includes embedded in the centrifugal cylinder 2 circumferential wall of the rinse head 51 (metal nozzle, embedded depth consistent with the wall thickness of the centrifugal cylinder 2), water supply pipe 52 (stainless steel hose) and solenoid valve 53, flow regulating valve 54 (all installed in the outer shell 1 external pipeline). The spray direction of the rinse head 51 is along the radial direction of the centrifugal cylinder 2 (facing the inner wall), and a micro turbine is integrated inside it (rotating with the flow of the rinse medium), which can drive the rinse head 51 to rotate around its own axis (achieve 360° no dead angle spray); one end of the water supply pipe 52 is connected to the rinse head 51, and the other end is connected to the external purified water tank (the rinse medium is purified water, which meets the medical clean requirements); the solenoid valve 53 controls the on-off of the rinse medium, and the flow regulating valve 54 adjusts the rinse pressure (such as increasing the pressure to 0.3-0.5MPa for microcrystalline particles, to enhance the rinsing effect).

[0023] Workflow: The material enters the centrifugal cylinder 2 from the feed inlet 11. After the drive unit is started, the drive motor 61 drives the rotating drum 3 to rotate at high speed (the rotating speed can be adjusted to 8000-12000rpm) through the elastic coupling 62 and the speed reducer 63. Under the action of centrifugal force, the microcrystalline particles (heavy phase) gather towards the outer wall of the centrifugal cylinder 2 and are discharged through the heavy phase outlet 12; the supernatant (light phase) gathers towards the center and is discharged through the light phase outlet 13.

[0024] Synchronously, the turbine blades 42 in the pressurized cylinder 4 are driven to rotate by the fluid (rinse medium or separated liquid) in the centrifugal cylinder 2, generating local turbulence and loosening the adhered particles on the inner wall of the centrifugal cylinder 2; the cleaning sheet 432 of the cleaning assembly 43 is tightly attached to the inner wall of the centrifugal cylinder 2 under the pre-tightening force of the torsional spring 4331, and is scraped with the rotating pressurized cylinder 4 (or due to the centrifugal force) to remove stubborn deposits (such as microcrystalline lumps). At the same time, the rinse head 51 of the rinse assembly 5 rotates under the drive of the micro turbine, radially sprays purified water, and further washes the residual particles on the inner wall to avoid blockage.

[0025] Example 2: Solid-liquid separation scene of viscous material in pharmaceutical intermediates This embodiment is aimed at the solid-liquid separation scene of viscous polysaccharide intermediate (such as antibiotic intermediate), and focuses on the pressure self-adaptation of the rinse assembly 5 and the elastic adjustment function of the cleaning assembly 43.

[0026] Structural differences: The centrifugal separation unit and the drive unit of this embodiment are basically the same as those of example 1, and the parameters of the rinse assembly 5 and the cleaning assembly 43 of the anti-blocking unit are adjusted as follows: Rinse assembly 5: the rotation speed of the rinse head 51 is reduced (achieved by adjusting the angle / design of the micro turbine blades), and the preset pressure range of the flow regulating valve 54 is adjusted to 0.1-0.2MPa (to avoid high pressure damaging the structure of the viscous material).

[0027] Cleaning assembly 43: The cleaning sheet 432 is made of medical-grade silicone material (with reduced elastic modulus), and the pre-tightening force of the torsional spring 4331 on the pin shaft 433 is reduced (the contact pressure is reduced to 0.1-0.2 N / mm²) to avoid hard scraping damage to the sticky material mass; the thickness of the elastic limiting block 4341 of the mounting seat 434 is increased (the swing angle is limited to ±15° to prevent overstretching of the silicone sheet).

[0028] Workflow: The sticky intermediate suspension enters the centrifugal cylinder 2 from the feed port 11, and the rotating drum 3 rotates at a low speed (5000-7000 rpm to avoid high shear force damage to the material structure). The material is stratified under the action of centrifugal force, and the heavy phase (sticky particles) adheres to the inner wall of the centrifugal cylinder 2, and the light phase (liquid phase) is discharged through the light phase outlet 13.

[0029] At this time, the turbine blades 42 in the pressurized cylinder 4 are slowly driven by the slow flow of sticky material, and the cleaning sheet 432 of the cleaning assembly 43 is in contact with the inner wall with a small swing (the silicone sheet is elastically deformed to fit), and the initially adhered particles are slowly scraped off; the flushing head 51 of the flushing assembly 5 rotates at a low speed (30-50 rpm) to spray warm water, which softens the sticky material and cooperates with the flexible scraping of the cleaning sheet 432 to completely remove the remaining material on the inner wall. If the material viscosity suddenly increases (such as a decrease in temperature), the flow regulating valve 54 automatically increases the flushing pressure (to 0.2 MPa), and at the same time, the elastic limiting block 4341 allows the cleaning sheet 432 to expand within the limited swing angle range, and the cleaning sheet 432 can be appropriately expanded (the contact pressure is increased), ensuring the anti-blocking effect.

[0030] Example 3: Solid-liquid separation scene of pharmaceutical intermediates prone to caking This example is aimed at the solid-liquid separation scene of enzyme intermediate containing protein intermediate prone to caking, and focuses on strengthening the "flushing-scraping" synergistic efficiency of the anti-blocking unit.

[0031] Structural reinforcement: Based on Example 1, the anti-blocking unit is adjusted as follows: pressurized cylinder 4: the number of pressurized cavities 41 is increased to four (uniformly distributed along the axial direction), and the number of mounting seats 434 on the cleaning disc 431 is correspondingly increased to four, and the turbine blades 42 in each pressurized cavity 41 are changed to spiral shape (increasing the tangential velocity of the fluid, and strengthening the turbulence intensity).

[0032] Flushing assembly 5: The number of flushing heads 51 is increased to six (distributed more densely in the circumferential direction), which can be adjusted according to the material properties or anti-blocking requirements, and the lead of the micro-turbine is increased (the rotation speed is increased to 100-150 rpm), and the spraying range covers all areas of the inner wall of the centrifugal cylinder 2 (without dead angles).

[0033] The cleaning component 43: the wear-resistant coating inside the cleaning sheet 432 is changed to a tungsten carbide composite coating (wear resistance is increased by 3 times), and the pin shaft 433 is made of stainless steel (corrosion resistance is increased).

[0034] Workflow: The protein material prone to caking enters the centrifugal cylinder 2 from the feed inlet 11, and the driving unit drives the rotating drum 3 to rotate at a medium speed (rotation speed 6000-8000 rpm). The material is quickly stratified under the action of centrifugal force, and the heavy phase (caked protein) is easy to form a dense mass in the inner wall of the centrifugal cylinder 2, and the light phase (clear liquid) is discharged through the light phase outlet 13.

[0035] At this time, the spiral turbine blade 42 in the pressurized cylinder 4 rotates at a high speed (because the fluid flow rate is fast), strong turbulence is generated, the mass structure is destroyed; the cleaning sheet 432 of the cleaning component 43 swings at a high frequency (the swing frequency is synchronized with the turbine rotation speed) under the push of the spiral turbulence, the tungsten carbide coating rubs against the inner wall of the centrifugal cylinder 2 violently, and small particles are quickly scraped off after being broken; the six flushing heads 51 of the flushing component 5 rotate at a high speed (100-150 rpm) synchronously, spray high-pressure water flow (pressure 0.4-0.6 MPa), and the scraped particles are flushed away from the inner wall in time to avoid secondary deposition.

[0036] In the above embodiments, the connection relationship and function of each part are developed around the core requirement of "anti-clogging", and through structure optimization and parameter adjustment, different characteristics of pharmaceutical intermediates separation scenes can be adapted, and the practicability and wide applicability of the utility model patent are verified.

[0037] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A clog-resistant rinsing centrifuge, characterized in that, The system includes a housing (1), a centrifugal separation unit, a drive unit, and an anti-clogging unit. The centrifugal separation unit includes a centrifugal cylinder (2) arranged coaxially within the housing (1) along a horizontal axis. The centrifugal cylinder (2) has an openable front cover (21) at its front end and a fixed rear cover (22) at its rear end. A rotating drum (3) is rotatably mounted inside the centrifugal cylinder (2) via a bearing assembly (31). The front end of the rotating drum (3) passes through the openable front cover (21), and the rear end passes through the fixed rear cover (22) and is connected to the drive unit. A feed inlet (11) is provided on the top of the housing (1) near the front cover (21). A light phase outlet (13) is provided on the side of the bottom near the rear end cover (22), and a heavy phase outlet (12) is provided on the top near the rear end cover (22); the anti-clogging unit includes a pressurizing cylinder (4) coaxially nested in the centrifuge cylinder (2), the inner wall of the pressurizing cylinder (4) is divided into at least three pressurizing chambers (41) along the axial direction, and each pressurizing chamber (41) is provided with a turbine blade (42) and a cleaning assembly (43); at least four flushing assemblies (5) are evenly distributed along the circumferential direction on the circumferential wall of the centrifuge cylinder (2); the drive unit is fixed to the outside of the rear end of the outer shell (1) and is connected to the rear end of the drum (3) through a transmission mechanism (65).

2. The anti-clogging rinsing centrifuge according to claim 1, characterized in that, The cleaning assembly (43) includes a cleaning disc (431) coaxially fixed to the inner wall of the pressure cylinder (4). At least three mounting seats (434) are evenly provided on the outer circumference of the cleaning disc (431). A cleaning blade (432) is hinged in each mounting seat (434) through a pin (433). The cleaning blade (432) is an arc-shaped plate structure with a wear-resistant coating on its inner surface and its outer surface abutting against the inner wall of the centrifuge cylinder (2).

3. A clog-resistant rinsing centrifuge according to claim 2, characterized in that, The cleaning blade (432) is made of elastic material, and its contact pressure with the inner wall of the centrifuge cylinder (2) can be adaptively adjusted by adjusting the preload of the torsion spring (4331) on the adjusting pin (433); the mounting base (434) is provided with an elastic limiting block (4341) at the opening, which is used to limit the swing angle range of the cleaning blade (432) around the pin (433).

4. A clogging-resistant rinsing centrifuge according to claim 1, characterized in that, The rinsing assembly (5) includes a rinsing head (51) embedded in the circumferential wall of the centrifuge cylinder (2), and the spray direction of the rinsing head (51) is along the radial direction of the centrifuge cylinder (2); the rinsing head (51) is connected to an external water tank through a water supply pipe (52), and the water supply pipe (52) is equipped with a solenoid valve (53) and a flow regulating valve (54); the rinsing head (51) is a rotary nozzle structure, which integrates a micro turbine inside, and can be driven to rotate around its own axis by the flow of the rinsing medium, and the spray range covers the entire circumference of the inner wall of the centrifuge cylinder (2); the rinsing assembly (5) is evenly distributed along the circumference of the centrifuge cylinder (2).

5. A clogging-resistant rinsing centrifuge according to claim 1, characterized in that, The drive unit includes a drive motor (61) fixed to the rear end of the housing (1). The output shaft of the drive motor (61) is connected to the input shaft of the reducer (63) through a flexible coupling (62). The output shaft of the reducer (63) is connected to the rear end of the drum (3) through a spline. The reducer (63) is fixed to a horizontal mounting base through a shock-absorbing bracket (64).

6. A clogging-resistant rinsing centrifuge according to claim 1, characterized in that, The front end of the pressure cylinder (4) is sealed to the front end cover (21) through the front seal (44), and the rear end is sealed to the rear end cover (22) through the rear seal (45). The front seal (44) and the rear seal (45) are both double-end mechanical seal structures, and are respectively set at the contact interface between the front end cover (21) and the pressure cylinder (4) and the contact interface between the rear end cover (22) and the pressure cylinder (4).

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