Treatment device for separating sludge microplastics

Abstract

The invention discloses a treatment device for separating sludge microplastics, and belongs to the technical field of green environmental protection. The venturi jet mixer mainly comprises a venturi jet mixer body, the venturi jet mixer body comprises a shell, a mandrel and an enclosure piece set, the mandrel is coaxially arranged in an inner cavity of the shell and is in running fit with the inner cavity of the shell, the enclosure piece set comprises a first spiral piece, a second spiral piece, a first throat piece and a second throat piece, and a tapered runner is arranged between the first spiral piece and the second spiral piece. A throat runner is arranged between the first throat piece and the second throat piece, the throat runner is connected to the outflow end of the gradually-shrunk runner, the circulation section of the gradually-shrunk runner is gradually shrunk in the direction from the gradually-shrunk runner to the throat runner, the circulation section of the throat runner is smaller than or equal to the minimum circulation section of the gradually-shrunk runner, the first spiral piece and the first throat piece are connected with the mandrel, and the second spiral piece and the second throat piece are connected with the mandrel. The second spiral piece and the second throat piece are connected with the shell. The treatment device for separating the sludge microplastics can effectively solve the problem that blockage is easy to occur when the sludge is subjected to jet mixing.

Description

Technical Field

[0001] This invention relates to the field of green and environmental protection technology, specifically to a treatment device for separating microplastics from sludge. Background Technology

[0002] Ozone (O) Ozone treatment is a green and environmentally friendly sludge treatment process that can separate microplastics from sludge. Its core is to use the strong oxidizing properties of ozone to selectively decompose and mineralize the organic matter (extracellular polymers, polysaccharides, proteins, humic acid, etc.) in sludge. When the "organic shell" that encapsulates and adheres to the microplastics is oxidized and degraded, the microplastics will detach due to density differences or changes in surface hydrophobicity, thereby achieving efficient separation.

[0003] In order to improve the dissolution efficiency and contact area of ​​ozone in thick sludge, existing sludge microplastic separation devices typically use jet mixers to mix ozone and sludge at high speed, generating strong shear force to break up sludge flocs. However, jet mixers are prone to clogging during use due to the necessary design of the tapered flow channel, especially when conveying sludge with high solids content. The reasons include: the high viscosity of the sludge leads to poor flowability and insufficient negative pressure, forming "bridging" blockage; large particulate impurities in the sludge accumulate at the jet, causing blockage; or the sludge remains hardened after shutdown due to lack of rinsing.

[0004] Therefore, it is necessary to provide a novel treatment device for separating microplastics from sludge. Summary of the Invention

[0005] Based on the aforementioned problems in the prior art, the purpose of this invention is to provide a treatment device for separating microplastics from sludge, which can effectively solve the problem of clogging that easily occurs when jet mixing sludge in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A treatment device for separating microplastics from sludge is provided, comprising a Venturi jet mixer. The Venturi jet mixer includes a shell, a mandrel, and a set of baffle plates. The mandrel is coaxially disposed within the inner cavity of the shell, and rotates around its axis to engage with the shell. The set of baffle plates includes a first spiral blade, a second spiral blade, a first throat blade, and a second throat blade. The first and second spiral blades are arranged opposite to each other and spaced apart along the axial direction of the shell / mandrel. A tapered flow channel is provided between the first and second spiral blades. The first throat blade and the... The two throat plates are arranged opposite each other and spaced apart along the axial direction of the outer shell / spindle. A throat flow channel is provided between the first and second throat plates. The throat flow channel is connected to the outlet end of the tapering flow channel. The flow cross section of the tapering flow channel gradually decreases from the tapering flow channel to the throat flow channel. The flow cross section of the throat flow channel is less than or equal to the minimum flow cross section of the tapering flow channel. An air inlet for connecting ozone is provided on the side wall of the throat flow channel. The first spiral plate and the first throat plate are fixedly connected to the spindle. The second spiral plate and the second throat plate are fixedly connected to the outer shell. The spindle can rotate alternately relative to the outer shell in the first rotation direction and the second rotation direction.

[0007] Furthermore, the outer shell is a cylindrical structure with openings at both ends. One end of the outer shell is provided with an inlet for receiving sludge fluid, and the other end of the outer shell is provided with an outlet for discharging the fluid after the sludge and ozone are mixed. The inner cavity of the outer shell is divided by a set of baffles to form an inflow zone near the inlet and a mixing zone near the outlet. The tapering flow channel and the throat flow channel are connected between the inflow zone and the mixing zone.

[0008] Furthermore, the first spiral blade is formed by a long strip extending radially along the outer shell and spirally extending around the centerline of the outer shell. The second spiral blade is also formed by a long strip extending radially along the outer shell and spirally extending around the centerline of the outer shell. The pitch of the path of the second spiral blade is greater than the pitch of the path of the first spiral blade. The side of the first spiral blade near the mandrel is attached to and fixedly connected to the outer peripheral wall of the mandrel. The side of the first spiral blade near the outer shell is sealed and attached to the inner peripheral wall of the outer shell. The side of the second spiral blade near the outer shell is attached to and fixedly connected to the inner peripheral wall of the outer shell. The side of the second spiral blade near the mandrel is sealed and attached to the outer peripheral wall of the mandrel. The inner peripheral wall of the outer shell, the outer peripheral wall of the mandrel, the first spiral blade, and the second spiral blade together form the tapered flow channel. The path of the tapered flow channel is spirally extended around the centerline of the outer shell.

[0009] Furthermore, the first throat plate is connected to the end of the first spiral plate near the outlet. The side of the first throat plate near the mandrel is attached to and fixedly connected to the outer peripheral wall of the mandrel. The side of the first throat plate near the outer shell is sealed and attached to the inner peripheral wall of the outer shell. The second throat plate is connected to the end of the second spiral plate near the outlet. The side of the second throat plate near the outer shell is attached to and fixedly connected to the inner peripheral wall of the outer shell. The side of the second throat plate near the mandrel is sealed and attached to the outer peripheral wall of the mandrel. The first throat plate and the second throat plate are parallel. The inner peripheral wall of the outer shell, the outer peripheral wall of the mandrel, the first throat plate, and the second throat plate together form the throat flow channel. The path of the throat flow channel extends circumferentially along the outer shell.

[0010] Furthermore, the first spiral blade is located on the side of the second spiral blade near the inlet. The side of the first spiral blade near the inlet has a warped surface, which gradually approaches the outlet along the flow direction of the tapering channel. The Venturi jet mixer is provided with at least two baffle plate groups, which are arranged in a circumferential array along the circumference of the outer shell. The end of the second spiral blade away from the throat plate is connected to an extension plate. The lower end face of the extension plate of the baffle plate group abuts against the upper end face of the throat plate of the adjacent baffle plate group. The throat plate is perpendicular to the axis of the spindle. The baffle plate group also includes an electronic control component. The component includes a slider, a sensor, and a rotary actuator. The slider is fixedly connected to the throat plate of the adjacent enclosure plate group. The sensor is mounted on the extension plate, and the rotary actuator is mounted on the extension plate. The rotary actuator is used to drive the slider to rotate along the second rotation direction of the mandrel. When the mandrel drives the spiral plate to rotate to the position along the first rotation direction, the slider triggers the sensor to monitor the rotation of the spiral plate along the first rotation direction. At the same time, the sensor sends an electrical signal to start the rotary actuator to drive the slider to rotate along the second rotation direction of the mandrel until it reaches the set position, thereby realizing the alternating rotation of the mandrel.

[0011] Furthermore, the slider has an arc-shaped elongated structure, and the center of the slider coincides with the axis of the spindle. A gear is installed on the output end of the rotary driver, and an arc-shaped rack is installed on the side of the slider near the rotary driver. The gear of the rotary driver meshes with the rack on the slider.

[0012] Furthermore, the electronic control assembly also includes a circuit board mounted on the extended sheet, and the sensor and rotary driver are electrically connected to the circuit board.

[0013] Furthermore, the interior of the extended piece is hollow, forming an installation chamber isolated from the inner cavity of the outer shell. The circuit board, sensor, and rotary driver are all housed in the installation chamber. A sliding hole is provided on the side wall of the installation chamber corresponding to the slider. The slider passes through the sliding hole, and the part of the slider that passes through the sliding hole and extends out of the installation chamber is fixedly connected to the throat piece.

[0014] Furthermore, the slider is located on the side of the mounting chamber closest to the outer shell. The side of the mounting chamber closest to the outer shell has an arc-shaped sidewall. The center of the arc-shaped sidewall coincides with the axis of the spindle. A stabilizing foot is protruded on the slider and on the side closest to the arc-shaped sidewall. The stabilizing foot slides in contact with the arc-shaped sidewall. The gear on the rotary drive is located on the side of the slider away from the arc-shaped sidewall.

[0015] Furthermore, the side of the extension piece closest to the outer shell is attached to and fixedly connected to the inner peripheral wall of the outer shell, and the side of the extension piece closest to the mandrel is sealed and attached to the outer peripheral wall of the mandrel.

[0016] The beneficial effects of this invention are as follows: The treatment device for separating microplastics from sludge provided by this invention includes a Venturi jet mixer comprising a shell, a mandrel, and a baffle assembly. The mandrel is coaxially disposed within the inner cavity of the shell, and the mandrel and the shell are rotatably coupled. The baffle assembly includes a spiral blade I, a spiral blade II, a throat blade I, and a throat blade II. Spiral blade I and spiral blade II are arranged opposite to each other and spaced apart along the axial direction of the shell / mandrel, and a tapered flow channel is provided between spiral blade I and spiral blade II. Throat blade I and throat blade II are arranged opposite to each other and spaced apart along the axial direction of the shell / mandrel, and a throat flow channel is provided between throat blade I and throat blade II, the throat flow channel being connected to the outflow of the tapered flow channel. The flow cross-section of the tapered channel gradually decreases from the tapered channel towards the throat channel. The flow cross-section of the throat channel is less than or equal to the minimum flow cross-section of the tapered channel. An inlet for connecting ozone is provided on the side wall of the throat channel. Sludge fed into the shell flows through the tapered channel to the throat channel, generating a Venturi effect. As the fluid passes through the narrowed flow end face of the tapered channel, the flow velocity increases while the static pressure decreases, reaching a peak in the throat channel. This allows ozone to enter the throat channel from the inlet under the negative pressure created by the pressure difference. The jet-like sludge fluid collides with the ozone gas in the throat channel, and the large bubbles are subjected to the shear force of the high-speed sludge fluid. The ozone is broken into dispersed bubbles by impact, resulting in a higher proportion of microbubbles that mix with the sludge. Additionally, spiral blade one and throat blade one are fixedly connected to the mandrel, while spiral blade two and throat blade two are fixedly connected to the outer shell. The mandrel can rotate alternately relative to the outer shell in the first and second rotation directions, causing spiral blade one and throat blade one to slide relative to spiral blade two and throat blade two. This sliding motion of spiral blade one and throat blade one relative to spiral blade two and throat blade two creates a tangential force along the flow direction, causing the obstructing material to slide along the sidewalls of the converging / throat channels, preventing it from adhering to the walls and thus promoting movement. Overcoming frictional resistance transforms the previously static blockage into a movable state. On the other hand, the vibration generated by the alternating rotation of the spindle relative to the outer shell is conducted and causes the blockage material to undergo high-frequency micro-amplitude motion, thereby enabling the blockage material to overcome static friction and become movable. Alternatively, the vibration generated by the alternating rotation of the spindle relative to the outer shell along the first and second rotation directions is conducted to the interior of the blockage material, disrupting the formed "bridge" and causing it to collapse. Thus, through the above design, the Venturi jet mixer and the treatment device for separating sludge microplastics provided by the present invention effectively solve the problem of easy clogging of sludge during jet mixing in the prior art. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a treatment device for separating microplastics from sludge, provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram showing the positional relationship between the mandrel and the enclosure panel assembly provided in an embodiment of the present invention.

[0020] Figure 3 This is a three-dimensional schematic diagram of the enclosure panel assembly provided in an embodiment of the present invention.

[0021] Figure 4 for Figure 3 Another perspective view of the fence panel group shown.

[0022] Figure 5 for Figure 4 Another perspective view of the fence panel group shown.

[0023] Figure 6 This is a schematic diagram of the structure of one set of enclosure panels provided in an embodiment of the present invention.

[0024] Figure 7 for Figure 6 Another perspective view of the fence panel group shown.

[0025] Figure 8 for Figure 6 The top view of the fence panel group shown.

[0026] Figure 9 For along Figure 8 A cross-sectional view along the EE direction.

[0027] Figure 10 For along Figure 8 A cross-sectional view along the FF direction.

[0028] Figure 11 This is a schematic diagram showing the positional relationship between the mandrel and the spiral blade provided in an embodiment of the present invention.

[0029] Figure 12 This is a perspective view of a fence panel assembly provided in an embodiment of the present invention, wherein the invisible portions are shown in dashed lines.

[0030] Figure 13 This is a three-dimensional structural diagram of the electronic control component provided in an embodiment of the present invention.

[0031] Figure 14 for Figure 13 Another perspective view of the electronic control components shown.

[0032] Figure 15 for Figure 2 The diagram shows the structure in another working state.

[0033] The reference numerals in the figures are as follows: 1. Outer shell; 11. Inlet; 12. Outlet; 13. Inflow zone; 14. Mixing zone; 2. Mandrel; 3. Enclosure plate group; 31. Spiral plate one; 311. Warped surface; 32. Spiral plate two; 33. Throat plate one; 34. Throat plate two; 341. Air inlet; 342. Connection port; 35. Extension plate; 351. Mounting chamber; 352. Arc sidewall; 353. Sliding hole; 355. Wiring hole; 36. Electrical control component; 361. Slider; 362. Sensor; 363. Rotary drive; 364. Stabilizing foot; 365. Rack; 366. Gear; 367. Circuit board; 4. Gradual narrowing channel; 5. Throat channel; 6. Inlet. Detailed Implementation

[0034] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0035] It should be noted that when a component is referred to as "connected to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0038] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, a particular feature, structure, or characteristic may be combined in any suitable manner.

[0039] Please refer to Figures 1 to 15As shown, the treatment device for separating microplastics in sludge provided by the present invention will now be described. This treatment device includes a Venturi jet mixer 100, which is used to mix ozone and sludge at high speed, generating a strong shear force to break up sludge flocs and improve the dissolution efficiency and contact area of ​​ozone in thick sludge. The Venturi jet mixer 100 includes a shell 1, a spindle 2, and a baffle assembly 3. The spindle 2 is coaxially disposed in the inner cavity of the shell 1, and the spindle 2 rotates around its axis and is fitted onto the shell 1. The baffle assembly 3 includes a first spiral blade 31, a second spiral blade 32, a first throat blade 33, and a second throat blade 34. The first spiral blade 31 and the second spiral blade 32 are arranged along the shell 1 / spindle 2. The spiral plates 31 and 32 are arranged axially opposite and spaced apart. A tapered flow channel 4 is provided between the spiral plates 31 and 32. Throat plates 33 and 34 are arranged axially opposite and spaced apart along the outer shell 1 / core 2. A throat flow channel 5 is provided between the throat plates 33 and 34. The throat flow channel 5 is connected to the outlet end of the tapered flow channel 4, and the flow cross section of the tapered flow channel 4 gradually decreases from the tapered flow channel 4 to the throat flow channel 5. The flow cross section of the throat flow channel 5 is less than or equal to the minimum flow cross section of the tapered flow channel 4. An ozone inlet 341 is provided on the side wall of the throat flow channel 5. The sludge input from the inlet 11 of the outer shell 1 flows through the tapered flow channel 4 to the throat flow channel 5, generating a Venturi effect. The fluid narrows as it passes through the tapered flow channel 4. As the flow velocity increases at the flow end face and the static pressure decreases, reaching its peak at the throat channel 5, ozone enters the throat channel 5 from the inlet 341 under the negative pressure created by the pressure difference. The jet-like sludge fluid collides with the ozone gas in the throat channel 5. Large bubbles are broken into dispersed bubbles by the shear force and impact of the high-speed sludge fluid, resulting in a bubble cluster with a higher proportion of microbubbles mixed with the sludge. In addition, spiral blade 31 and throat blade 33 are fixedly connected to the spindle 2, and spiral blade 32 and throat blade 34 are fixedly connected to the outer shell 1. The spindle 2 can rotate alternately with respect to the outer shell 1 in the first and second rotation directions, thereby driving spiral blade 31 and throat blade 33 relative to spiral blade 32 and throat blade 34. Displacement, on the one hand, through the sliding of spiral blade 31 and throat blade 33 relative to spiral blade 32 and throat blade 34, the material between the converging channel 4 and the throat channel 5 receives a tangential force along the flow direction, causing the obstructing material to slide along the sidewall of the converging channel 4 and the throat channel 5, avoiding wall-attachment and gaining motion to overcome frictional resistance, thus turning the originally static obstructing material into a movable state. On the other hand, the vibration generated by the alternating rotation of the spindle 2 relative to the outer shell 1 is transmitted and causes the obstructing material to obtain high-frequency micro-amplitude motion, so that the obstructing material overcomes static friction and turns into a movable state, or the vibration generated by the alternating rotation of the spindle 2 relative to the outer shell 1 is transmitted to the interior of the obstructing material, disturbing the formed "bridge" and causing it to collapse. Thus, through the above design,The Venturi jet mixer 100 and the treatment device for separating sludge microplastics provided in this embodiment of the invention effectively solve the problem of sludge clogging during jet mixing in the prior art.

[0040] like Figure 1 As shown, in some embodiments, the outer casing 1 is a cylindrical structure open at both ends. One end of the outer casing 1 is provided with an inlet 11 for receiving the sludge fluid, and the other end of the outer casing 1 is provided with an outlet 12 for discharging the fluid after the sludge and ozone are mixed. Figure 2 As shown, the inner cavity of the outer shell 1 is divided by the baffle plate group 3 to form an inflow zone 13 near the inlet 11 and a mixing zone 14 near the outlet 12. The converging flow channel 4 and the throat flow channel 5 are connected between the inflow zone 13 and the mixing zone 14, so that the sludge in the inflow zone 13 near the inlet 11 can only enter the mixing zone 14 after being mixed with ozone through the converging flow channel 4 and the throat flow channel 5 and finally be discharged from the outlet 12.

[0041] like Figures 3-5 , Figures 8-10 As shown, in some embodiments, spiral blade 31 is formed by a long strip extending radially along the outer shell 1 and spirally extending around the axis of the outer shell 1. Spiral blade 32 is also formed by a long strip extending radially along the outer shell 1 and spirally extending around the axis of the outer shell 1. The pitch of the path of spiral blade 32 is greater than the pitch of the path of spiral blade 31. In this way, the distance between spiral blade 31 and spiral blade 32 gradually decreases along the spiral direction of spiral blade 31 / spiral blade 32. The side of spiral blade 31 closest to the mandrel 2 is attached and fixed to the outer peripheral wall of the mandrel 2. The spiral blade 31 is fixedly connected to the inner wall of the outer shell 1 on the side closest to the outer shell 1. The spiral blade 32 is fixedly connected to the inner wall of the outer shell 1 on the side closest to the outer shell 1. The spiral blade 32 is also fixedly connected to the outer wall of the mandrel 2 on the side closest to the mandrel 2. The inner wall of the outer shell 1, the outer wall of the mandrel 2, the spiral blade 31, and the spiral blade 32 together form the tapered flow channel 4. The path of the tapered flow channel 4 is spirally extended around the axis of the outer shell 1. The rotation of the mandrel 2 causes the spiral blade 31 to rotate relative to the spiral blade 32 around the axis of the outer shell 1.

[0042] like Figure 6 and Figure 7As shown, laryngeal disc 33 is connected to the end of spiral disc 31 near the outlet 12. The side of laryngeal disc 33 near the spindle 2 is attached to and fixedly connected to the outer peripheral wall of the spindle 2. The side of laryngeal disc 33 near the outer shell 1 is sealed to the inner peripheral wall of the outer shell 1. Laryngeal disc 34 is connected to the end of spiral disc 32 near the outlet 12. The side of laryngeal disc 34 near the outer shell 1 is attached to and fixedly connected to the inner peripheral wall of the outer shell 1. The side of laryngeal disc 34 near the spindle 2 is sealed to the outer peripheral wall of the spindle 2. Laryngeal disc 33 and laryngeal disc 34 are parallel, so the distance between laryngeal disc 33 and laryngeal disc 34 is equal everywhere. The inner peripheral wall of the outer shell 1... The outer peripheral wall of the spindle 2, throat plate 1 33 and throat plate 2 34 together form the throat flow channel 5. The path of the throat flow channel 5 extends circumferentially along the outer shell 1, so that the sludge fluid generates the Venturi effect when entering the throat flow channel 5 from the narrowing flow channel 4. When the fluid passes through the narrowing flow end face of the narrowing flow channel 4, the flow velocity increases and the static pressure decreases, reaching a peak in the throat flow channel 5. The sludge fluid forms a rapid jet in the throat flow channel 5. At the same time, a pressure difference is formed between the throat flow channel 5 and the air inlet 341, which forces ozone to be drawn into the throat flow channel 5 and broken into dispersed bubbles by the shear force and impact of the rapid jet formed by the sludge fluid.

[0043] The Venturi jet mixer 100 provided in this embodiment of the invention utilizes the annular space formed between the outer shell 1 and the mandrel 2 to place the baffle plate group 3, such that the annular space and the gap between the first spiral plate 31 and the second spiral plate 32 constitute a spirally extending tapered flow channel 4, and the annular space and the gap between the first throat plate 33 and the second throat plate 34 constitute a throat flow channel 5 extending circumferentially along the outer shell 1. Unlike the linearly distributed Venturi flow channel structure in the prior art, in the Venturi jet mixer 100 provided in this embodiment of the invention, the rotation of the mandrel 2 relative to the outer shell 1 can drive the first spiral plate 31 on one side of the tapered flow channel 4 to reciprocate, and drive the first throat plate 33 on one side of the throat flow channel 5 to reciprocate, thereby causing the material in the tapered flow channel 4 / throat flow channel 5 to obtain tangential force along the flow direction. In this embodiment of the invention, since the paths of the first spiral plate 31 and the second spiral plate 32 extend in a spiral direction, such as Figure 15As shown, when the first spiral blade 31 rotates relative to the second spiral blade 32 around the axis of the outer shell 1, the flow cross section at any point in the converging channel 4 will change with the rotation of the first spiral blade 31. Specifically, when the first spiral blade 31 rotates towards the second spiral blade 32, the flow cross section at any point in the converging channel 4 decreases, causing the material in the converging channel 4 to be subjected to a compressive force perpendicular to the spiral direction. Alternatively, when the first spiral blade 31 rotates away from the second spiral blade 32, the flow cross section at any point in the converging channel 4 increases, giving the material in the converging channel 4 more space to adapt to the displacement of the material, weakening the mutual compression and support between the materials, and forcing the material inside the converging channel 4 to shift and deform, thereby enhancing the ability to break up blockages and significantly reducing the probability of blockage.

[0044] like Figure 5 As shown, in some embodiments, multiple air inlets 341 are provided on the end face of the second throat plate 34 opposite to the first throat plate 33. The interior of the second throat plate 34 is hollow to form a confluence cavity (not shown) that connects the multiple air inlets 341. A connection port 342 is provided on the side of the second throat plate 34 near the inner peripheral wall of the outer shell 1. An ozone inlet (not shown) is provided on the outer peripheral wall of the outer shell 1 that penetrates to the inner peripheral wall of the outer shell 1 and is aligned with and communicates with the connection port 342. When ozone is introduced from the outside of the outer shell 1 through the ozone inlet, the ozone enters the confluence cavity of the second throat plate 34 through the connection port 342. When a negative pressure is generated in the throat flow channel 5, the ozone in the confluence cavity enters the throat flow channel 5 from the multiple air inlets 341.

[0045] like Figure 1 As shown, in some embodiments, the first spiral blade 31 is located on the side of the second spiral blade 32 closer to the inlet 11, such as... Figure 11 As shown, the spiral blade 31 has a warped surface 311 on the side near the inlet 11. Along the flow direction of the narrowing channel 4, the warped surface 311 gradually approaches the outlet 12. Thus, when the fluid impacts the warped surface 311 of the spiral blade 31 from the inlet, the fluid's kinetic energy exerts a force perpendicular to the warped surface 311. Since this force has a component along the first rotation direction of the spindle 2, it will drive the spiral blade 31 to rotate along the first rotation direction. To make the spiral blade 31 rotate to a set angle along the first rotation direction and then rotate in the opposite second rotation direction, such as... Figure 4 and Figure 5 As shown, the Venturi jet mixer 100 is provided with at least two baffle plate groups 3. Multiple baffle plate groups 3 are arranged in a circumferential array along the circumference of the outer shell 1. An extension plate 35 is connected to the end of the spiral blade 32 away from the throat blade 34. The lower end face of the extension plate 35 of the baffle plate group 3 abuts against the upper end face of the throat blade 33 of the adjacent baffle plate group 3. The throat blade 33 is perpendicular to the axis of the spindle 2. Thus, when the extension plate 35 rotates with the spindle 2, the lower end face of the extension plate 35 will always maintain a sealed fit with the upper end face of the throat blade 33. Figure 12 As shown, the enclosure panel group 3 also includes an electronic control component 36, which includes a slider 361, a sensor 362, and a rotary driver 363. The slider 361 is fixedly connected to the throat plate 33 of the adjacent enclosure panel group 3. The sensor 362 is mounted on the extension plate 35, and the rotary driver 363 is mounted on the extension plate 35. The output end of the rotary driver 363 is connected to the slider 361. The rotary driver 363 is used to drive the slider 361 to rotate in the second rotation direction of the spindle 2. When the spindle 2 drives the spiral plate 31 to rotate to the position in the first rotation direction, the slider 361 triggers the sensor 362 to monitor the spindle 2 driving the spiral plate 31 to rotate to the position in the first rotation direction. At the same time, the sensor 362 transmits the signal to the sensor 361. Sensor 362 sends an electrical signal to start rotary driver 363 to drive slider 361 to rotate along the second rotation direction of spindle 2 until it reaches the set position, thereby realizing the alternating rotation of spindle 2. Specifically, position recognition can be achieved between sensor 362 and slider 361 through contact, or through non-contact means. Non-contact means can be achieved through magnetic fields, lasers, etc. The impact force of sludge fluid is cleverly used to drive spindle 2 to rotate along the first rotation direction, which saves energy and reduces consumption. It also eliminates the need for the forward and reverse rotation structure required for the alternating operation of rotary driver 363, and reduces the operating time of rotary driver 363.

[0046] like Figure 12 , Figure 13 and Figure 14 As shown, in some embodiments, the slider 361 has an arc-shaped elongated structure, and the center of the slider 361 coincides with the axis of the spindle 2. A gear 366 is installed on the output end of the rotary driver 363, and an arc-shaped rack 365 is installed on the side of the slider 361 near the rotary driver 363. The gear 366 of the rotary driver 363 meshes with the rack 365 on the slider 361, so that when the rotary driver 363 drives the gear 366 to rotate, it will drive the slider 361 to rotate around the axis of the spindle 2.

[0047] like Figure 12 , Figure 13 and Figure 14 As shown, in some embodiments, the electronic control assembly 36 further includes a circuit board 367 mounted on the extension sheet 35, and the sensor 362 and the rotary driver 363 are electrically connected to the circuit board 367.

[0048] like Figure 12As shown, in some embodiments, the interior of the extension piece 35 is hollow, forming a mounting chamber 351 that is isolated from the inner cavity of the outer shell 1. The circuit board 367, sensor 362, and rotary driver 363 are all housed in the mounting chamber 351. A sliding hole 353 is provided on the side wall of the mounting chamber 351 corresponding to the slider 361. The slider 361 passes through the sliding hole 353. The part of the slider 361 that passes through the sliding hole 353 and extends out of the mounting chamber 351 is fixedly connected to the throat piece 33. In this way, when the spindle 2 rotates and drives the slider 361 to rotate around the axis of the spindle 2, the slider 361 can always remain inserted into the sliding hole 353, so that the slider 361 always keeps the sliding hole 353 sealed. In this way, the electronic control component 36 is sealed through the mounting chamber 351, providing a sealed and excellent working environment to maintain its long service life.

[0049] like Figure 12 As shown, in some embodiments, the slider 361 is located near the mounting chamber 351 on the side close to the outer shell 1. The mounting chamber 351 is provided with an arc-shaped sidewall 352 on the side close to the outer shell 1. The center of the arc-shaped sidewall 352 coincides with the axis of the spindle 2. A stabilizing foot 364 is protruding on the slider 361 and on the side close to the arc-shaped sidewall 352. The stabilizing foot 364 slides in contact with the arc-shaped sidewall 352. The gear 366 on the rotary driver 363 is located on the side of the slider 361 away from the arc-shaped sidewall 352. In this way, the gear 366 on the rotary driver 363 abuts against the slider 361, and the stabilizing foot 364 abuts against the arc-shaped sidewall 352, so that the thickness direction of the slider 361 is held and limited by the gear 366 on both sides and the arc-shaped sidewall 352, so that when the slider 361 rotates with the spindle 2, the slider 361 maintains its original shape and is not easily deformed or shaken.

[0050] like Figure 5 As shown, in some embodiments, the extension piece 35 is provided with a wiring hole 355 for connecting the mounting chamber 351 on the side near the housing 1. The wiring on the circuit board 367 extends to the outside of the housing 1 through the wiring hole 355. Specifically, the outer peripheral wall of the housing 1 is provided with a wiring interface (not shown) that is aligned with and communicates with the wiring hole 355.

[0051] like Figure 1 As shown, in some embodiments, the end of the tapered channel 4 away from the throat channel 5 is provided with an inlet 6 for sludge fluid to pass through.

[0052] like Figure 5 As shown, in some embodiments, the side of the extension piece 35 near the outer shell 1 is attached to and fixedly connected to the inner peripheral wall of the outer shell 1, and the side of the extension piece 35 near the mandrel 2 is sealed to the outer peripheral wall of the mandrel 2, so that the extension piece 35 blocks the gap formed between the spiral blade 2 32 and the spiral blade 1 31 in the adjacent enclosure plate group 3, and the fluid output from the inlet of the outer shell 1 can only pass through the inlet 6 in each enclosure plate group 3.

[0053] like Figure 3 As shown, in some embodiments, the Venturi jet mixer 100 is provided with three baffle plate groups 3.

[0054] like Figure 1 As shown, in some embodiments, the two ends of the mandrel 2 are connected to the housing 1 through bearing brackets to achieve rotational engagement between the mandrel 2 and the housing 1.

[0055] To reduce turbulence caused by the mixing of sludge and ozone, in some other embodiments not shown, the throat channel 5 is connected to a diffusion channel (not shown) at one end near the mixing zone 14. The flow cross-section of the diffusion channel gradually expands from the converging channel 4 toward the throat channel, thereby gently expanding the flow cross-section. The path of the diffusion channel extends spirally around the axis of the outer shell 1, and the spiral direction of the diffusion channel extension path is the same as that of the converging channel 4 extension path. It can be understood that the constraint of the diffusion channel can also be formed by sheet enclosure.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A treatment device for separating microplastics from sludge, characterized in that: The device includes a Venturi jet mixer, comprising a housing, a mandrel, and a baffle assembly. The mandrel is coaxially disposed within the inner cavity of the housing and rotates around its axis to engage with the housing. The baffle assembly includes a first helical blade, a second helical blade, a first throat blade, and a second throat blade. The first and second helical blades are arranged opposite to each other and spaced apart along the axial direction of the housing / mandrel. A tapered flow channel is provided between the first and second helical blades. The first and second throat blades are arranged opposite to each other and spaced apart along the axial direction of the housing / mandrel. A throat flow channel is provided between throat plate one and throat plate two. The throat flow channel is connected to the outlet end of the tapering flow channel, and the flow cross section of the tapering flow channel gradually decreases from the tapering flow channel to the throat flow channel. The flow cross section of the throat flow channel is less than or equal to the minimum flow cross section of the tapering flow channel. An air inlet for connecting ozone is provided on the side wall of the throat flow channel. Spiral plate one and throat plate one are fixedly connected to the spindle, and spiral plate two and throat plate two are fixedly connected to the outer shell. The spindle can rotate alternately relative to the outer shell in the first rotation direction and the second rotation direction.

2. The treatment device for separating microplastics from sludge according to claim 1, characterized in that: The outer shell is a cylindrical structure with openings at both ends. One end of the outer shell is provided with an inlet for receiving sludge fluid, and the other end of the outer shell is provided with an outlet for discharging the fluid after the sludge and ozone are mixed. The inner cavity of the outer shell is divided by a set of baffles to form an inflow zone near the inlet and a mixing zone near the outlet. The tapering channel and the throat channel are connected between the inflow zone and the mixing zone.

3. The treatment device for separating microplastics from sludge according to claim 1, characterized in that: The first spiral blade is formed by a long strip extending radially along the outer shell and spirally extending around the centerline of the outer shell. The second spiral blade is also formed by a long strip extending radially along the outer shell and spirally extending around the centerline of the outer shell. The pitch of the path of the second spiral blade is greater than the pitch of the path of the first spiral blade. The side of the first spiral blade near the mandrel is attached to and fixedly connected to the outer peripheral wall of the mandrel. The side of the first spiral blade near the outer shell is sealed and attached to the inner peripheral wall of the outer shell. The side of the second spiral blade near the outer shell is attached to and fixedly connected to the inner peripheral wall of the outer shell. The side of the second spiral blade near the mandrel is sealed and attached to the outer peripheral wall of the mandrel. The inner peripheral wall of the outer shell, the outer peripheral wall of the mandrel, the first spiral blade, and the second spiral blade together form the tapered flow channel. The path of the tapered flow channel is spirally extended around the centerline of the outer shell.

4. The treatment device for separating microplastics from sludge according to claim 1, characterized in that: The first throat plate is connected to the end of the first spiral plate near the outlet. The side of the first throat plate near the mandrel is attached to and fixedly connected to the outer peripheral wall of the mandrel. The side of the first throat plate near the outer shell is sealed and attached to the inner peripheral wall of the outer shell. The second throat plate is connected to the end of the second spiral plate near the outlet. The side of the second throat plate near the outer shell is attached to and fixedly connected to the inner peripheral wall of the outer shell. The side of the second throat plate near the mandrel is sealed and attached to the outer peripheral wall of the mandrel. The first throat plate and the second throat plate are parallel. The inner peripheral wall of the outer shell, the outer peripheral wall of the mandrel, the first throat plate, and the second throat plate together form the throat flow channel. The path of the throat flow channel extends circumferentially along the outer shell.

5. The treatment device for separating microplastics from sludge according to claim 3, characterized in that: The first spiral blade is located on the side of the second spiral blade near the inlet. The side of the first spiral blade near the inlet has a warped surface, which gradually approaches the outlet along the flow direction of the tapered channel. The Venturi jet mixer is provided with at least two baffle plate groups, which are arranged in a circumferential array along the outer shell. The end of the second spiral blade away from the throat plate is connected to an extension plate. The lower end face of the extension plate of the baffle plate group abuts against the upper end face of the throat plate of the adjacent baffle plate group. The throat plate is perpendicular to the axis of the mandrel. The baffle plate group also includes an electrical control component. The device includes a slider, a sensor, and a rotary actuator. The slider is fixedly connected to the throat plate of the adjacent enclosure plate group. The sensor is mounted on the extension plate, and the rotary actuator is mounted on the extension plate. The rotary actuator is used to drive the slider to rotate along the second rotation direction of the mandrel. When the mandrel drives the spiral plate to rotate to the position along the first rotation direction, the slider triggers the sensor to monitor the rotation of the spiral plate along the first rotation direction. At the same time, the sensor sends an electrical signal to start the rotary actuator to drive the slider to rotate along the second rotation direction of the mandrel until it reaches the set position, thereby realizing the alternating rotation of the mandrel.

6. The treatment apparatus for separating microplastics from sludge according to claim 5, characterized in that: The slider has an arc-shaped elongated structure, and the center of the slider coincides with the axis of the spindle. A gear is installed on the output end of the rotary driver, and an arc-shaped rack is installed on the side of the slider near the rotary driver. The gear of the rotary driver meshes with the rack on the slider.

7. The treatment apparatus for separating microplastics from sludge according to claim 5, characterized in that: The electronic control assembly also includes a circuit board mounted on the extended sheet, and the sensor and rotary driver are electrically connected to the circuit board.

8. The treatment apparatus for separating microplastics from sludge according to claim 5, characterized in that: The hollow interior of the extension piece forms an installation chamber isolated from the inner cavity of the outer shell. The circuit board, sensor, and rotary driver are all housed in the installation chamber. A sliding hole is provided on the side wall of the installation chamber corresponding to the slider. The slider passes through the sliding hole, and the part of the slider that passes through the sliding hole and extends out of the installation chamber is fixedly connected to the throat piece.

9. The treatment apparatus for separating microplastics from sludge according to claim 8, characterized in that: The slider is located on the side of the mounting chamber closest to the outer shell. The side of the mounting chamber closest to the outer shell has an arc-shaped sidewall. The center of the arc-shaped sidewall coincides with the axis of the spindle. A stabilizing foot is protruding on the slider and on the side closest to the arc-shaped sidewall. The stabilizing foot slides in contact with the arc-shaped sidewall. The gear on the rotary drive is located on the side of the slider away from the arc-shaped sidewall.

10. The treatment apparatus for separating microplastics from sludge according to claim 5, characterized in that: The side of the extension piece closest to the outer shell is attached to and fixedly connected to the inner peripheral wall of the outer shell, and the side of the extension piece closest to the mandrel is sealed and attached to the outer peripheral wall of the mandrel.

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