Separation equipment for mud, sand and water with complex particle sizes

Abstract

The invention discloses complex particle size mud-sand water separation equipment which comprises a water container, a plurality of sand collecting plates are arranged in the water container in an up-down layering mode, the water container forms a plurality of cavities based on the sand collecting plates, a plurality of liquid passing holes are formed in the areas, close to the peripheral side, of the sand collecting plates, a shaft hole is formed in the center of each sand collecting plate, and the liquid passing holes are communicated with the liquid passing holes. A water inlet is formed in the bottom of one side of the water container and can be externally connected with a treatment water source, and a water outlet is formed in the top of one side of the water container; a main shaft of the multi-stage rotational flow assembly is rotationally arranged in the shaft hole, a plurality of groups of stirring paddles are arranged on the main shaft, corresponding to the plurality of cavities, of the multi-stage rotational flow assembly, the number of blades of the stirring paddles in the upper cavity and the lower cavity which are adjacent to each other is different, and different rotational flow speeds can be generated so as to realize graded sedimentation of particle impurities in different cavities; impurities with different particle sizes can be treated in a layered and staged manner, so that the cleanliness of discharged water is ensured.

Description

Technical Field

[0001] This invention belongs to the technical field of water treatment equipment, specifically relating to a complex particle size mud-sand water separation device. Background Technology

[0002] High-turbidity muddy water contains particulate impurities of different sizes, which cannot be effectively reused directly, resulting in water waste. Effectively separating impurities from muddy water allows the treated water to be reused, saving water resources, and recovering fine sand impurities for reuse.

[0003] Although existing centrifugal separation technology is used, the separation effect is limited and it cannot separate fine particle size impurities, which affects the use of subsequent treated water.

[0004] Therefore, how to provide a multi-stage separation device capable of handling mud, sand, and water with complex particle sizes is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a complex particle size mud-sand water separation device, which can process impurity particles of different sizes in water in layers and grades, achieve efficient separation and treatment of mud-sand water, and ensure the purity of the treated water.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a complex particle size mud-sand-water separation device, comprising:

[0007] A water container, wherein the interior of the water container is provided with multiple sand collecting plates in upper and lower layers, and the water container forms multiple chambers based on the multiple sand collecting plates. Multiple liquid passage holes are opened near the periphery of the sand collecting plates, and a shaft hole is provided in the center of the sand collecting plates. A water inlet is provided at the bottom of one side of the water container and can be connected to an external water source for treatment. A water outlet is provided at the top of one side of the water container. A multi-stage cyclone assembly is provided, wherein the main shaft of the multi-stage cyclone assembly is rotatably disposed in the shaft hole, and multiple sets of stirring blades are provided on the main shaft corresponding to multiple chambers. The stirring blades in adjacent chambers have different numbers of blades and can generate different cyclone velocities to achieve graded centrifugal sedimentation of particulate impurities in different chambers.

[0008] The beneficial technical effects of this invention are as follows: The water container forms multiple chambers based on multiple sand-collecting plates in upper and lower layers. Liquid passage holes are provided on the peripheral edges of the sand-collecting plates to ensure fluid transfer between the upper and lower layers. Simultaneously, it can change the swirling state, preventing the outflow of impurities carried by the water and ensuring that impurities do not affect the settling and accumulation of impurities in the middle of the sand-collecting plates. The water to be treated enters from the bottom and flows out from the top. By utilizing the difference in the number of agitator blades in the corresponding chambers of the multi-stage swirling assembly, the swirling speed is differentiated, enabling the centrifugal separation and sedimentation of impurities of different particle sizes in different chambers. Multi-layered centrifugal treatment improves the purity of the outflowing treated water. It should be noted that the core purpose of the agitator is not to directly generate centrifugal force, but to enhance the centrifugal effect formed by the swirling flow by controlling the water flow state, thereby achieving effective separation of sand particles and organic matter. The particles ultimately collect at the bottom center not solely due to centrifugal force, but as a result of the combined effect of centrifugal force and gravity.

[0009] Preferably, it also includes a flow stabilizer plate, which is fixedly disposed inside the water container and located above the plurality of sand collecting plates. The water container has a buffer chamber formed on the upper side of the flow stabilizer plate. The flow stabilizer plate has a central hole through which the main shaft passes. The flow stabilizer plate has a plurality of flow holes densely distributed on its periphery near the central hole. The outlet is disposed in the buffer chamber. The purified water after graded sedimentation flows out stably from the outlet after passing through the buffer chamber.

[0010] The resulting technical effect is that a buffer chamber is constructed by combining the flow stabilizer plate with the water container. After the treated water stabilizes in the buffer chamber, it is discharged from the outlet. It should be noted that a flow passage is opened in the middle area of ​​the flow stabilizer plate to further prevent the fluid from carrying impurities out.

[0011] Preferably, the number of blades of the lower-level agitator corresponding to the multi-stage cyclone assembly is greater than the number of blades of the adjacent upper-level agitator. The multiple chambers form a multi-stage separation chamber based on the action of the multi-stage cyclone assembly. The multi-stage separation chambers are arranged in upper and lower layers and can separate particle size impurities in water step by step based on different cyclone centrifugal effects.

[0012] The resulting technical effect is that the multi-stage swirling assembly of the present invention is based on the number of blades of the upper and lower stirring blades. The number of blades of the stirring blades in different chambers directly affects the swirling velocity and flow field distribution. Different swirling velocities and flow field distributions have different centrifugal sedimentation effects on impurities of different particle sizes. At the same rotational speed: increasing the number of blades ≈ increasing the energy input density and frequency → the effect is close to increasing the rotational speed.

[0013] The flow field is more turbulent, with stronger shear and more intense mixing. Reducing the number of blades is equivalent to reducing the energy input density and frequency, which is similar to reducing the rotational speed. The flow field is more stable, the shear is weaker, and the overall circulation is more gentle. For larger particles such as 20-50 micrometers, their large mass and inertia mean that the centrifugal force they experience is much greater than the fluid disturbance. Even under conditions of high blade number, i.e., high rotational speed, they can be efficiently thrown towards the pool wall and settled. For particles of 0-2 micrometers, 2-5 micrometers, and 5-10 micrometers, reducing the number of blades is equivalent to reducing the rotational speed, making the flow field more stable and the shear weaker to achieve removal. This invention can achieve targeted separation and removal of particles of different sizes in multi-stage separation chambers.

[0014] Preferably, the sidewall of the water container is provided with a coagulant addition port and a flocculant addition port corresponding to the multi-stage separation chamber, and the coagulant addition port and the flocculant addition port are arranged away from the bottom separation chamber.

[0015] The resulting technical effect is as follows: In order to further improve the separation and sedimentation effect, coagulants and flocculants are added to initially agglomerate small particles and connect multiple small particles together to form larger and denser flocs, which further improves the particle size and overall sedimentation performance. The bottom separation chamber is first used to settle larger particle size impurities. Adding flocculants and / or coagulants to the upper or higher separation chambers can give full play to the efficacy of the agents and achieve better aggregation and sedimentation.

[0016] Preferably, it also includes a bottom sludge discharge pipe, which is connected to the bottom of the water container and used to discharge the sludge and sand accumulated in the bottom chamber.

[0017] The resulting technical effect is that the bottom sludge discharge pipe can discharge the sludge and sand accumulated in the middle of the bottom chamber, which is convenient for long-term use.

[0018] Preferably, it also includes a sand collecting plate sludge discharge pipe, which is horizontally connected to the bottom of the sand collecting plate, and the discharge end of the sand collecting plate sludge discharge pipe extends to the outer wall of the water container.

[0019] The resulting technical effect is that the mud and sand in the sand collection plate can be drained out, which can improve the working time and processing efficiency of the device.

[0020] Preferably, the sand collecting plate is a conical plate, the side wall of the water container is provided with a clearance pipe hole, and the outer side wall of the sand collecting plate sludge discharge pipe is sealed to the clearance pipe hole.

[0021] The resulting technical effect is that the conical sand collection plate facilitates the accumulation of mud and sand in the center, which is beneficial for subsequent cleaning.

[0022] Preferably, the stirring paddles of the multi-stage cyclone assembly are installed at the same or different heights in the corresponding chambers.

[0023] The resulting technical effect is that different impeller heights affect the flow field distribution within the chamber. The stirring intensity (speed) and height can be flexibly adjusted according to actual process requirements, thereby optimizing the mixing efficiency and flow field structure configuration in each region.

[0024] Preferably, the water container has a cylindrical structure, and the outer diameter of the stirring paddle corresponding to the multi-stage vortex assembly is half the outer diameter of the water container.

[0025] The resulting technical effect is that the cylindrical water container will cause swirling under the stirring action of the agitator, which can prevent the water from stagnating in corners. Specifically, the diameter of the agitator should not be too large or too small, otherwise it will affect the central aggregation effect of mud and sand. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a complex particle size mud-sand water separation device according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a complex particle size mud-sand water separation device according to the present invention. Figure 2 ; Figure 3 This is a diagram illustrating the particle flocculation process of a complex particle size mud-sand-water separation device according to the present invention. Figure 4 TKE contour plots were simulated for different stirring speeds in this invention: (a) speed = 50 rpm, (b) speed = 40 rpm, (c) speed = 30 rpm, (d) speed = 20 rpm, (e) speed = 10 rpm; Figure 5 The velocity streamline diagrams for different stirring speeds simulated in this invention are as follows: (a) speed = 50 rpm, (b) speed = 40 rpm, (c) speed = 30 rpm, (d) speed = 20 rpm, (e) speed = 10 rpm; Figure 6 TKE contour plots for different numbers of blades in the impeller of this invention: (a) four blades, (b) three blades, (c) two blades, (d) one blade; Figure 7 The velocity streamline diagrams for different numbers of impeller blades in this invention are: (a) four blades, (b) three blades, (c) two blades, and (d) one blade. Figure 8 TKE contour maps for different impeller installation heights of the present invention: (a) impeller height = 100 mm, (b) impeller height = 80 mm, (c) impeller height = 60 mm; Figure 9The velocity streamline diagrams of the impeller at different installation heights are as follows: (a) agitator height 100 mm, (b) impeller height 80 mm, (c) impeller height 60 mm. Figure 10 for Figure 4 , 6 The turbulent kinetic energy layer data map corresponding to 8; Figure 11 for Figure 5 , 7 The velocity magnitude layer data plot corresponding to 9.

[0027] 1 Water container, 11 Chamber, 12 Buffer chamber, 2 Sand collecting plate, 21 Liquid passage hole, 3 Water inlet, 4 Water outlet, 5 Multi-stage vortex assembly, 51 Main shaft, 52 Agitator, 6 Flow stabilizer plate, 61 Flow passage hole, 7 Coagulant addition port, 8 Flocculant addition port, 9 Bottom sludge discharge pipe, 10 Sand collecting plate sludge discharge pipe. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Figure 4 and Figure 5 The simulation conditions were: simulated water concentration = 200 mg / L, hydraulic residence time = 5 minutes, number of impeller blades = 4, and agitator height = 100 mm. Figure 6 and Figure 7 The simulation conditions were: simulated water concentration = 200 mg / L, hydraulic residence time = 5 minutes, stirrer speed = 50 rpm, and stirrer blade installation height = 100 mm. Figure 8 and Figure 9 The simulation conditions were: simulated water concentration = 200 mg / L, hydraulic residence time = 5 minutes, impeller speed = 50 rpm, and number of impeller blades = 4. See the appendix of this invention. Figures 1 to 11 According to an embodiment of the present invention, a mud-sand-water separation device with complex particle size includes: Water container 1 provides temporary storage conditions for the water treatment process. The water container is not limited to the structure of a barrel or pool. The interior of the water container 1 is provided with multiple sand collecting plates 2 in upper and lower layers. The water container 1 forms multiple chambers 11 based on the multiple sand collecting plates 2. Multiple liquid passage holes 21 are opened near the periphery of the sand collecting plates 2. The liquid passage holes provide conditions for the fluid flow between the upper and lower chambers. The center of the sand collecting plates 2 is provided with a shaft hole. A water inlet 3 is provided at the bottom of one side of the water container 1 and can be connected to an external water source. A water outlet 4 is provided at the top of the other side of the water container 1. The multi-stage cyclone assembly 5 has a main shaft 51 that is rotatably mounted in the shaft hole. The multi-stage cyclone assembly 5 has multiple sets of stirring blades 52 on the main shaft corresponding to multiple chambers 11. The stirring blades 52 in adjacent chambers have different numbers of blades and can generate different cyclone speeds to achieve graded centrifugal sedimentation of particulate impurities in different chambers 11.

[0030] This device achieves the difference in rotational speed by increasing the number of blades on the agitator. Essentially, changing the number of blades adjusts the contact frequency and the contact area between the agitator and the fluid.

[0031] At the same rotational speed: Increasing the number of blades ≈ increasing energy input density and frequency → the effect is close to increasing the rotational speed. The flow field is more turbulent, the shear is stronger, and the mixing is more intense. Reducing the number of blades ≈ decreasing energy input density and frequency → the effect is close to decreasing the rotational speed. The flow field is more stable, the shear is weaker, and the overall circulation is more gentle. For larger particles such as 20-50 micrometers, their mass and inertia are large, and the centrifugal force they experience is much greater than the fluid disturbance. Even under conditions of high blade number, i.e., high rotational speed, they can be efficiently thrown towards the container wall and settled. For particles of 0-2 micrometers, 2-5 micrometers, and 5-10 micrometers, reducing the number of blades is equivalent to reducing the rotational speed, making the flow field more stable and the shear weaker to achieve removal.

[0032] In practice, the number of chambers in the water container can be increased according to the needs of the treatment process. For different particle sizes, different numbers of blades can be used to control the water flow rate at the same stirring speed, thereby achieving the removal of particles of different sizes.

[0033] In this device, the particles gather at the bottom center of the water container under the action of the stirring paddle, mainly relying on the synergistic effect of centrifugal effect and gravity settling in fluid dynamics.

[0034] As the agitator rotates within the chamber, it causes the surrounding water to move in a circular motion, creating a vortex flow field. The flow velocity is higher near the agitator blades and lower further away, forming a velocity gradient. When particles settle near the bottom wall of the chamber, the lower flow velocity at the bottom reduces inertial force, preventing the particles from being carried away by the water flow. Instead, the axial flow pushes the particles towards the center of the chamber bottom. Thus, guided by the bottom flow field, the particles converge towards the center.

[0035] The rotating flow field creates a low-pressure center in the central region, while the sidewalls of the chamber are high-pressure zones. Under the influence of the pressure gradient, particles migrate from the high-pressure zone (outer edge) to the low-pressure zone (center), especially noticeable at the bottom. Furthermore, the liquid passage holes in the sand collection plate disrupt the overall swirling flow, preventing particles from rising with the water circulation and promoting their settling. A sand discharge pipe can be installed at the bottom center of the chamber to facilitate the pumping away of accumulated particles or periodic removal.

[0036] In other embodiments, a flow stabilizer 6 is also included. The flow stabilizer 6 is fixedly disposed inside the water container 1 and located above multiple sand collecting plates 2. A buffer chamber 12 is formed on the upper side of the water container 1 corresponding to the flow stabilizer 6. The buffer chamber is located at the top layer of the water container. The center of the flow stabilizer 6 is provided with a central hole through which the main shaft passes. Multiple flow holes 61 are densely distributed on the periphery of the flow stabilizer 6 near the central hole. This is different from the liquid passage holes arranged on the periphery of the sand collecting plates. The flow field pressure in the central region is low and the flow velocity is slow, which makes the treated water near the chamber enter the buffer chamber more stably. The outlet 4 is located in the buffer chamber 12. The purified water after staged sedimentation flows out stably from the outlet 4 after passing through the buffer chamber 12.

[0037] In some other specific embodiments, the number of blades of the lower layer impeller corresponding to the multi-stage swirling assembly 5 is greater than the number of blades of the adjacent upper layer impeller. Multiple chambers 11 form a multi-stage separation chamber based on the action of the multi-stage swirling assembly 5. The multi-stage separation chamber is arranged in upper and lower layers and can separate particle impurities in the water step by step. The purpose is to separate impurities with particle sizes from large to small from bottom to top.

[0038] In some other embodiments, the sidewall of the water container 1 is provided with a coagulant addition port 7 and a flocculant addition port 8 corresponding to the multi-stage separation chambers, and the coagulant addition port 7 and the flocculant addition port 8 are arranged away from the bottom separation chamber.

[0039] Fine particles in silty water exhibit extremely slow natural settling velocities, primarily due to their high surface negative charge, which generates strong electrostatic repulsion between particles, hindering their approach and aggregation, thus making it difficult to form larger flocs. These fine particles can remain in a relatively stable suspended state in water for extended periods, making them difficult to settle and separate. Treatment using chemical coagulants is necessary.

[0040] Taking a three-stage separation chamber as an example, the coagulant addition port 7 is located on the side wall of the second-stage separation chamber, and the flocculant addition port 8 is located on the side wall of the third-stage separation chamber.

[0041] The coagulant addition port is used to add PAC (polyaluminum chloride), a common inorganic polymeric coagulant whose main mechanism of action is charge neutralization. When PAC is added to water, it rapidly hydrolyzes to generate a large number of metal ions with high valence positive charges. These ions can effectively neutralize the negative charge on the surface of suspended colloidal particles, reduce the electrostatic repulsion between particles, promote the destabilization of colloids, and achieve the initial coagulation of small particles.

[0042] The flocculant addition pores are used to add PAM (polyacrylamide), a water-soluble high-molecular-weight organic polymer with good solubility, high viscosity, and significant molecular weight characteristics. Its molecular structure is long-chain, enabling it to bind to the particle surface through adsorption-overlapping interactions, linking multiple fine particles together to form larger and denser flocs. This process significantly improves particle size and overall settling performance. A schematic diagram of the flocculation process is shown below. Figure 3 As shown, this visually illustrates the change of particles from a dispersed state to agglomeration into larger flocs.

[0043] Based on the settling velocity formula, under constant liquid viscosity and stirring speed, the settling velocity of particles is directly proportional to the square of their particle size. However, in practice, the density of flocs usually decreases, which may weaken the effect of increasing settling velocity to some extent. Nevertheless, the positive effects of flocculation leading to a multiple increase in particle size far outweigh the negative effects of density changes. Furthermore, the density of fine particles is not significantly different from that of PAM, therefore density does not dominate changes in settling behavior.

[0044] The synergistic process of centrifugation and flocculation effectively removes particles from muddy water with complex particle sizes. The bottom layer mainly removes larger particles with a diameter of 50 μm or greater, the adjacent layer above mainly removes medium-sized particles with a diameter of 20-50 μm or greater, and the layer above that further enhances the removal efficiency of fine particles with a diameter of 0-20 μm through flocculation and centrifugation.

[0045] In some other embodiments, a bottom sludge discharge pipe 9 is also included. The bottom sludge discharge pipe 9 is connected to the bottom of the water container 1 and is used to discharge the sludge and sand accumulated in the bottom chamber. The sand / sludge can be discharged periodically.

[0046] In some other specific embodiments, a sand collecting plate sludge discharge pipe 10 is also included. The sand collecting plate sludge discharge pipe 10 is horizontally connected to the bottom of the sand collecting plate 2, and the discharge end of the sand collecting plate sludge discharge pipe 10 extends out of the outer wall of the water container 1.

[0047] Specifically, the sand collecting plate 2 is a conical plate, and the side wall of the water container 1 is provided with a clearance pipe hole. The outer side wall of the sand collecting plate sludge discharge pipe 10 is sealed to the clearance pipe hole.

[0048] In other embodiments, the installation height of the agitator 52 of the multi-stage swirling assembly 5 in the corresponding chamber is adjusted appropriately according to the needs of the processing.

[0049] In other embodiments, the water container 1 has a cylindrical structure, and the outer diameter of the stirring paddle corresponding to the multi-stage swirling assembly 5 is half the outer diameter of the water container 1.

[0050] Specific processing steps: Water is injected through the inlet, and the wastewater enters the first mixing zone (bottom chamber). Here, it undergoes initial treatment. As time progresses, the treated fine particles remain at the bottom of the container, and the liquid level rises, allowing the wastewater to enter the second mixing zone (upper chamber). In the second layer, even smaller particles are removed. Compared to the first layer, the mixing impeller rotates at a lower speed (due to fewer impeller blades) and is positioned lower (relative to the bottom wall of each chamber). The entire process, from wastewater injection at the inlet to effluent discharge, takes ten minutes, representing a hydraulic retention time of ten minutes, thus achieving highly efficient separation of particle size impurities in the water.

[0051] The apparatus and methods disclosed in the embodiments are described in a relatively simple manner since they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the description in the method section.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mud-sand-water separation device with complex particle size, characterized in that, include: A water container (1) has multiple sand collecting plates (2) arranged in upper and lower layers inside the water container (1). The water container (1) forms multiple chambers (11) based on the multiple sand collecting plates (2). Multiple liquid passage holes (21) are opened near the periphery of the sand collecting plates (2). A shaft hole is provided in the center of the sand collecting plates (2). A water inlet (3) is provided at the bottom of one side of the water container (1) and can be connected to an external water source. A water outlet (4) is provided at the top of one side of the water container (1). A multi-stage swirling assembly (5) has its main shaft (51) rotatably mounted in the shaft hole. Multiple sets of stirring blades (52) are arranged on the main shaft of the multi-stage swirling assembly (5) corresponding to multiple chambers (11). The stirring blades (52) in adjacent chambers have different numbers of blades and can generate different swirling speeds to achieve graded centrifugal sedimentation of particulate impurities in different chambers (11).

2. The complex particle size mud-sand-water separation equipment according to claim 1, characterized in that, It also includes a flow stabilizer plate (6), which is fixedly installed on the inner side of the water container (1) and located above the multiple sand collection plates (2). The water container (1) has a buffer chamber (12) on the upper side corresponding to the flow stabilizer plate (6). The flow stabilizer plate (6) has a central hole through which the main shaft passes. The flow stabilizer plate (6) has multiple flow holes (61) densely distributed on the periphery near the central hole. The outlet (4) is located in the buffer chamber (12). The purified water after graded sedimentation flows out stably from the outlet (4) after passing through the buffer chamber (12).

3. The complex particle size mud-sand-water separation equipment according to claim 1, characterized in that, The number of blades of the lower layer stirring blade corresponding to the multi-stage swirling component (5) is greater than the number of blades of the adjacent upper layer stirring blade. The multiple chambers (11) form a multi-stage separation chamber based on the action of the multi-stage swirling component (5). The multi-stage separation chamber is arranged in upper and lower layers and can separate particle size impurities in water step by step.

4. The complex particle size mud-sand-water separation equipment according to claim 3, characterized in that, The side wall of the water container (1) is provided with a coagulant addition port (7) and a flocculant addition port (8) corresponding to the multi-stage separation chamber. The coagulant addition port (7) and the flocculant addition port (8) are arranged away from the bottom separation chamber.

5. The complex particle size mud-sand-water separation equipment according to claim 1, characterized in that, It also includes a bottom sludge discharge pipe (9), which is connected to the bottom of the water container (1) and is used to discharge the sludge and sand accumulated in the bottom chamber.

6. The complex particle size mud-sand-water separation equipment according to claim 1, characterized in that, It also includes a sand collection plate sludge discharge pipe (10), which is horizontally connected to the bottom of the sand collection plate (2), and the discharge end of the sand collection plate sludge discharge pipe (10) extends to the outer wall of the water outlet container (1).

7. A complex particle size mud-sand-water separation device according to claim 6, characterized in that, The sand collecting plate (2) is a conical plate, and the side wall of the water container (1) is provided with a clearance pipe hole. The outer side wall of the sand collecting plate mud discharge pipe (10) is sealed to the clearance pipe hole.

8. A complex particle size mud-sand-water separation device according to claim 1, characterized in that, The stirring paddles (52) of the multi-stage swirling assembly (5) may be installed at the same or different heights in the corresponding chambers.

9. A complex particle size mud-sand-water separation device according to claim 1, characterized in that, The water container (1) has a cylindrical structure.

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