An activated sludge cyclone separator

Abstract

This invention discloses an activated sludge cyclone separator, comprising a cyclone chamber and a conical section. The cyclone chamber and the conical section are separate units, connected by a flange. A tangential feed pipe is provided on the side of the cyclone chamber, and an overflow pipe is provided at the top of the cyclone chamber, perpendicular to the center of the top of the cyclone chamber. An underflow pipe is provided at the bottom of the conical section, which consists of upper and lower parts fixed by a bracket. This invention independently designs and connects the cyclone chamber (pre-separation zone) and the conical section (main separation zone), optimizing the coupling of pre- / main separation zones with different size ratios based on the instrument's separation effect, facilitating the adjustment of instrument design parameters. The tangential feed pipe is equipped with spiral guide vanes to enhance tangential velocity; an air column stabilizer improves the enrichment efficiency of lightweight flocs.

Description

Technical Field

[0001] This invention relates to the field of sludge hydrocyclone separation technology, and more particularly to an activated sludge hydrocyclone separation device. Background Technology

[0002] In wastewater treatment processes, solid-liquid separation of activated sludge is a core step in ensuring effluent quality and maintaining the stable operation of the biological treatment system. Currently, the mainstream sludge separation technologies in the industry mainly rely on two methods: secondary sedimentation tank settling and traditional cyclone separation. However, traditional cyclone separators have significant technical shortcomings.

[0003] Existing hydrocyclones mostly adopt an integrated "cyclone chamber-cone section" structure, with a fixed size ratio between the pre-separation zone (cyclone chamber) and the main separation zone (cone section). This makes it impossible to adjust separation parameters according to actual sludge characteristics (such as sludge concentration and particle size distribution), resulting in limited separation accuracy. Furthermore, traditional devices suffer from three key problems: First, uneven tangential velocity distribution within the cyclone chamber easily forms an unstable air column, leading to incomplete separation of light flocculent sludge from heavy granular sludge and a high concentration of suspended solids in the overflow liquid. Second, sludge easily adheres to the inner wall of the cone section, causing blockage of the underflow pipe over long-term operation, requiring shutdown for disassembly and cleaning, resulting in high maintenance costs. Third, the lack of a targeted sludge sorting mechanism prevents precise control of "heavy activated sludge recirculation and light ineffective sludge discharge," leading to a decrease in the proportion of effective microorganisms in the biological system and weak resistance to shock loads. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides an activated sludge cyclone separation device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An activated sludge cyclone separator includes a cyclone chamber and a conical section. The cyclone chamber and the conical section are separate units connected by a flange. A tangential feed pipe is provided on the side of the cyclone chamber, and an overflow pipe is provided at the top of the cyclone chamber, perpendicular to the center of the top of the cyclone chamber. An underflow pipe is provided at the bottom of the conical section, which has upper and lower parts that are fixed by a fixing frame. A rotating ring is installed between the upper and lower parts, and a scraper is rotatably installed on the inner wall of the rotating ring. Multiple unblocking branches are evenly distributed on the scraper, and the unblocking branches have a spatially curved structure with their shapes conforming to the inner wall of the conical section.

[0007] Preferably, a guide ribbon is fixed on the inner wall of the swirling cavity, and an air column stabilizer is provided directly below the overflow pipe. The air column stabilizer is an inverted conical cover with honeycomb guide holes.

[0008] Preferably, a horizontal drive box is fixed on the outer wall of the rotating ring, and a threaded sleeve is slidably installed in the horizontal drive box via a horizontal slide rail. One end of the threaded sleeve movably passes through the rotating ring and is fixed with a limit post.

[0009] Preferably, a push-pull strip is fixed on one side of the wall scraper corresponding to the unblocking branch position of the rotating ring, and a sliding opening is provided on the push-pull strip, through which the limiting post passes.

[0010] Preferably, the threaded sleeve has a threaded rod installed on its internal thread. The threaded rod is rotatably installed inside the horizontal drive box, and one end of the threaded rod extends to the outside of the horizontal drive box and is fixed with a knob.

[0011] Preferably, a dual-axis motor is fixed on the outer wall of the conical section, a first gear is fixed on the top output shaft of the dual-axis motor, a first gear ring is fixed on the outer wall of the rotating ring, and the first gear meshes with the first gear ring.

[0012] Preferably, the bottom output shaft of the dual-axis motor is fixed with a second gear, and a second gear ring is rotatably mounted on the outer wall of the conical section, with the second gear meshing with the second gear ring.

[0013] Preferably, an arc-shaped limiting strip is fixed to the bottom end of the second toothed ring, and a reciprocating moving bracket is horizontally and movably installed on the outer wall of the conical segment via a pair of guide rods arranged in parallel with each other. A spring sleeve is sleeved on the outside of the guide rods to push the reciprocating moving bracket to move and reset. A limiting rod is fixed to the top end of the reciprocating moving bracket, and a striking ball is fixed to the bottom end of the reciprocating moving bracket via a connecting rod. The spring sleeve is in an uncompressed state, and the striking ball contacts the outer wall of the conical segment.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The cyclone chamber (pre-separation zone) and the cone section (main separation zone) are designed independently and spliced ​​together. The pre / main separation zones of different sizes are optimized according to the separation effect of the instrument, which facilitates the adjustment of the instrument design parameters; the tangential feed pipe is equipped with spiral guide vanes to enhance the tangential velocity; the air column stabilizer improves the enrichment efficiency of light flocs.

[0016] 2. It can be directly integrated into the wastewater treatment plant without altering the existing process operation, quickly achieving effective separation of flocculent / light sludge and heavy sludge, thus improving the treatment level of the biological system. No additional secondary sedimentation tank is required, meaning the problem of poor settling properties of mixed suspended solids can be solved without large-scale modifications to the civil engineering, easily achieving minimal investment, reasonable operation and maintenance costs, and simple operation.

[0017] 3. This sludge separator uses a screening process to return the heavier, denser sludge to the biological system, thereby increasing the ratio of heavy sludge to dense bacterial flocs and promoting the formation of aerobic granular sludge. The lighter filamentous bacteria and light sludge are discharged as waste sludge, effectively improving sludge settling performance, increasing the concentration of microorganisms in the reaction tank, and ultimately improving the phosphorus and nitrogen removal performance of wastewater, improving effluent quality, and enhancing the ability to withstand shock loads.

[0018] 4. The unblocking branches of the scraper adopt a spatial bending structure that fits into the inner wall of the cone section. Under normal conditions, they rotate synchronously with the rotating ring, which can scrape off the sludge attached to the inner wall in real time. When blockage occurs, the angle of the scraper can be adjusted by the horizontal drive box, so that the unblocking branches intersect to form a "shearing-loosening" effect, which can quickly unblock the underflow pipe without stopping the machine for disassembly.

[0019] 5. The dual-axis motor synchronously drives the rotating ring (scraper) and the second toothed ring (driving the striking mechanism). The arc-shaped limit strip cooperates with the reciprocating moving bracket to make the striking ball periodically strike the outer wall of the cone section, thereby strengthening the sludge shedding through vibration. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a first-view cross-sectional view of the vortex cavity and the upper half of the cone section of the present invention;

[0023] Figure 3 This is a second-view sectional view of the vortex cavity and the upper half of the cone section of the present invention;

[0024] Figure 4 This is a cross-sectional view of the tapered segment of the present invention;

[0025] Figure 5 This is a schematic diagram of the scraper strip of the present invention in its initial state (the unblocking branch is in contact with the inner wall of the cone segment).

[0026] Figure 6 This is a schematic diagram of the scraper strip of the present invention in the unblocking state (the two scraper strips are rotated until the unblocking branches intersect).

[0027] Figure 7 This is a schematic diagram showing the cooperation relationship between the scraper bar and the horizontal drive box of the present invention;

[0028] Figure 8 for Figure 7 Enlarged detail image of position A in the middle;

[0029] Figure 9 This is a schematic diagram of the cone segment from a downward angle of elevation of the present invention;

[0030] Figure 10 for Figure 9 Enlarged detail image of position B in the middle;

[0031] In the diagram: 1. Swirl chamber; 101. Overflow pipe; 102. Tangential feed pipe; 103. Guide ribbon; 2. Conical section; 201. Flange; 202. Underflow pipe; 3. Fixing frame; 4. Rotating ring; 401. First toothed ring; 5. Scraper; 501. Unblocking branch; 502. Push-pull strip; 503. Sliding port; 6. Horizontal drive box; 601. Horizontal slide rail; 602. Threaded sleeve; 603. Threaded rod; 604. Knob; 605. Limiting post; 7. Dual-axis motor; 701. First gear; 702. Second gear; 8. Second toothed ring; 801. Arc-shaped limiting strip; 802. Guide rod; 803. Reciprocating moving bracket; 804. Spring sleeve; 805. Limiting rod; 806. Connecting rod; 807. Striking ball. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0033] Example 1

[0034] Reference Figure 1-10 An activated sludge cyclone separator includes a cyclone chamber 1 and a conical section 2, which are separate units connected by a flange 201. A tangential feed pipe 102 is provided on the side of the cyclone chamber 1, and an overflow pipe 101 is provided at the top of the cyclone chamber 1, perpendicular to the center of the top of the cyclone chamber 1. An underflow pipe 202 is provided at the bottom of the conical section 2, which consists of upper and lower parts connected by a fixing frame 3. The upper and lower parts are fixed and a rotating ring 4 is installed between them. A scraping strip 5 is rotatably installed on the inner wall of the rotating ring 4. Multiple unblocking branches 501 are evenly distributed on the scraping strip 5. The unblocking branches 501 are spatially curved structures. The shape of the unblocking branches 501 fits the inner wall of the cone section 2. A guide ribbon 103 is fixed on the inner wall of the vortex cavity 1. An air column stabilizer is provided directly below the overflow pipe 101. The air column stabilizer is an inverted cone-shaped cover with honeycomb guide holes.

[0035] The sludge mixture is introduced tangentially from the side of the cyclone chamber 1 (pre-separation zone). The sludge mixture rotates downward along the inner wall to form an outer vortex. In the underflow formed at the bottom of the cone section 2, denser heavy granular sludge and relatively dense sludge are left. The heavy sludge flows out through the underflow pipe 202 at the bottom of the cone section 2, while the light flocculent or filamentous sludge tends to move along the axial direction with the air column, forming an upward rotational motion. It will flow out through the overflow pipe 101 at the top of the cyclone chamber 1 and be collected and removed.

[0036] Example 2

[0037] Reference Figure 1-10 The difference between this embodiment and embodiment 1 is that a horizontal drive box 6 is fixed on the outer wall of the rotating ring 4. A threaded sleeve 602 is slidably installed in the horizontal drive box 6 via a horizontal slide rail 601. One end of the threaded sleeve 602 movably passes through the rotating ring 4 and is fixed with a limit post 605. A push-pull strip 502 is fixed on one side of the unblocking branch 501 on the scraper 5 corresponding to the position of the rotating ring 4. A sliding port 503 is opened on the push-pull strip 502. The limit post 605 passes through the push-pull strip 502 through the sliding port 503. A threaded rod 603 is installed inside the threaded sleeve 602. The threaded rod 603 is rotatably installed in the horizontal drive box 6, and one end of the threaded rod 603 extends to the outside of the horizontal drive box 6 and is fixed with a knob 604.

[0038] By turning knob 604, the threaded rod 603 is rotated. Due to the threaded engagement between the threaded rod 603 and the threaded sleeve 602, and the limiting and guiding effect of the horizontal slide rail 601 on the threaded sleeve 602, the threaded sleeve 602 can be driven to move horizontally. This, in turn, pushes the scraper bar 5 to rotate by sliding the limiting pin 605 within the sliding port 503. The scraper bar 5 can... Figure 5 and Figure 6 Switching between the two position states shown. Figure 5 In the clean wall-hanging state, when the rotating ring 4 rotates, and in this state, the scraper 5 and the unblocking branch 501 are in contact with the inner wall of the cone section 2, they will not obstruct the spiral flow of sludge in the cone section 2, nor will they affect the sludge separation effect of the cone section 2. This allows the scraper 5 to follow and rotate relative to the inner wall of the cone section 2 to scrape off the attached sludge, thus achieving an active cleaning effect. When the inside of the cone section 2 is blocked by sludge, it can be switched to... Figure 6 As the two scraper blades 5 rotate, they intersect at the unblocking branch 501. As they rotate with the rotating ring 4, they cut off and loosen the sludge, thus quickly unblocking the cone section 2.

[0039] A dual-axis motor 7 is fixed on the outer wall of the cone segment 2. A first gear 701 is fixed on the top output shaft of the dual-axis motor 7. A first gear ring 401 is fixed on the outer wall of the rotating ring 4. The first gear 701 meshes with the first gear ring 401. The dual-axis motor 7 drives the first gear ring 401 to rotate. The first gear 701 meshes with the first gear ring 401 to drive the rotating ring 4 to rotate.

[0040] Example 3

[0041] Reference Figure 1-10 The difference between this embodiment and embodiment 2 is that the bottom output shaft of the dual-axis motor 7 is fixed with a second gear 702, a second gear ring 8 is rotatably mounted on the outer wall of the cone segment 2, the second gear 702 meshes with the second gear ring 8, an arc-shaped limiting strip 801 is fixed at the bottom of the second gear ring 8, a reciprocating moving bracket 803 is horizontally and movably mounted on the outer wall of the cone segment 2 through a pair of parallel guide rods 802, and a spring sleeve 804 is sleeved on the outside of the guide rods 802 to push the reciprocating moving bracket 803 to move and reset, a limiting rod 805 is fixed at the top of the reciprocating moving bracket 803, and a striking ball 807 is fixed at the bottom of the reciprocating moving bracket 803 through a connecting rod 806, the spring sleeve 804 is in an uncompressed state, and the striking ball 807 is in contact with the outer wall of the cone segment 2;

[0042] The second gear 702 is driven to rotate by the dual-axis motor 7. The second gear 702 meshes with the second gear ring 8, which in turn drives the second gear ring 8 to rotate. When the arc-shaped limiting bar 801 rotates and passes the limiting rod 805, it can push the reciprocating moving bracket 803 to move and compress the spring sleeve 804 to store energy. When the arc-shaped limiting bar 801 separates from the limiting rod 805, the energy of the spring sleeve 804 is released and pushes the striking ball 807 to strike the outer wall of the cone section 2, thereby generating vibration, which can improve the effect of unblocking and scraping the wall.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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 this invention.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, 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.

[0045] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An activated sludge cyclone separator, comprising a cyclone chamber (1) and a conical section (2), characterized in that: The swirling cavity (1) and the conical section (2) are separate units, and the swirling cavity (1) and the conical section (2) are spliced ​​together by a flange (201). The swirling cavity (1) has a tangential feed pipe (102) on its side and an overflow pipe (101) at the top of the swirling cavity (1). The overflow pipe (101) is perpendicular to the center of the top of the swirling cavity (1). The bottom end of the conical section (2) has a bottom flow pipe (202). The conical section (2) has two parts, upper and lower, which are fixed by a fixing frame (3). A rotating ring (4) is installed between the upper and lower parts. A scraper (5) is rotatably installed on the inner wall of the rotating ring (4). Multiple unblocking branches (501) are evenly distributed on the scraper (5). The unblocking branches (501) are spatially curved structures, and the shape of the unblocking branches (501) fits the inner wall of the conical section (2). A horizontal drive box (6) is fixed on the outer wall of the rotating ring (4). A threaded sleeve (602) is slidably installed in the horizontal drive box (6) via a horizontal slide rail (601). One end of the threaded sleeve (602) movably passes through the rotating ring (4) and is fixed with a limit post (605). A push-pull strip (502) is fixed on one side of the unblocking branch (501) corresponding to the position of the rotating ring (4) on the scraping strip (5). A sliding opening (503) is provided on the push-pull strip (502), and the limiting post (605) passes through the sliding opening (503) through the push-pull strip (502). The threaded sleeve (602) has a threaded rod (603) installed inside its internal thread. The threaded rod (603) is rotatably installed inside the horizontal drive box (6), and one end of the threaded rod (603) extends to the outside of the horizontal drive box (6) and is fixed with a knob (604).

2. The activated sludge cyclone separator according to claim 1, characterized in that: A guide ribbon (103) is fixed on the inner wall of the swirling cavity (1), and an air column stabilizer is provided directly below the overflow pipe (101). The air column stabilizer is an inverted cone-shaped cover with honeycomb guide holes.

3. The activated sludge cyclone separator according to claim 1, characterized in that: A dual-axis motor (7) is fixed on the outer wall of the conical segment (2). A first gear (701) is fixed on the top output shaft of the dual-axis motor (7). A first gear ring (401) is fixed on the outer wall of the rotating ring (4). The first gear (701) meshes with the first gear ring (401).

4. The activated sludge cyclone separator according to claim 3, characterized in that: The bottom output shaft of the dual-axis motor (7) is fixed with a second gear (702), and a second gear ring (8) is rotatably installed on the outer wall of the cone section (2). The second gear (702) meshes with the second gear ring (8).

5. The activated sludge cyclone separator according to claim 4, characterized in that: The bottom end of the second toothed ring (8) is fixed with an arc-shaped limiting strip (801). A reciprocating moving bracket (803) is horizontally and movably installed on the outer wall of the cone segment (2) through a pair of parallel guide rods (802). A spring sleeve (804) is sleeved on the outside of the guide rods (802) to push the reciprocating moving bracket (803) to move and reset. A limiting rod (805) is fixed at the top of the reciprocating moving bracket (803). A striking ball (807) is fixed at the bottom end of the reciprocating moving bracket (803) through a connecting rod (806). The spring sleeve (804) is in an uncompressed state, and the striking ball (807) is in contact with the outer wall of the cone segment (2).

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