Adjustable overflow hydraulic cyclone and hydraulic cyclone group

Abstract

The utility model provides a kind of adjustable overflow's hydraulic cyclone and hydraulic cyclone group, the hydraulic cyclone includes hydraulic cyclone body, the hydraulic cyclone body is equipped with hydraulic cyclone entrance, hydraulic cyclone overflow outlet, hydraulic cyclone underflow outlet, the hydraulic cyclone overflow outlet is connected with hydraulic cyclone overflow pipe, further include overflow regulator, the overflow regulator includes movable upper socket, elastic hose, expansion mechanism and lower socket fixing, the upper end of elastic hose is connected with hydraulic cyclone overflow pipe by movable upper socket, the lower end of elastic hose is connected with hydraulic cyclone overflow outlet by lower socket fixing;Movable upper socket, hydraulic cyclone body are connected by expansion mechanism between. The technical scheme of the utility model actively adjusts the overflow head loss of hydraulic cyclone in the operation process, so that the turbulent flow and shear force received by the suspension are minimum, and the damage to the fragile clumps and flocculent in the suspension is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydrocyclone technology, and in particular to an adjustable overflow hydrocyclone and hydrocyclone assembly. Background Technology

[0002] Currently, hydrocyclones are the mainstream equipment for achieving efficient separation and classification of particulate suspensions. Their working principle is as follows: after the particulate suspension enters the cavity tangentially, it is separated or classified into light and heavy components under the action of centrifugal force. The heavy components move towards the wall of the device and are discharged from the bottom outlet, while the light components migrate towards the center and are discharged from the overflow outlet.

[0003] The separation performance of a hydrocyclone is affected not only by other parameters but also by the overflow head loss. Changes in parameters such as feed solids concentration, particle size distribution, viscosity, and pressure will alter the overflow head loss, thus affecting the distribution ratio of underflow to overflow. In special applications such as activated sludge classification, overflow quality is crucial for downstream treatment, therefore overflow head loss needs to be adjusted; however, in conventional applications, since underflow is often considered the primary product, overflow is usually not actively adjusted.

[0004] Existing methods for adjusting overflow head loss have significant drawbacks: adjusting via overflow pipe diameter requires pipe replacement and cannot be implemented during operation; adjusting via adding a free-flowing vertical pipe section at the top requires elevation determined by equipment layout and design, making subsequent adjustment difficult; siphon hydrocyclones are adjusted via vent pipes with regulating valves, but the injected air can easily trigger excessive turbulence and shear forces, leading to the breakage of aggregates and flocs, making them unsuitable for suspended solids such as activated sludge; when using closed collection pipes or containers for adjustment, if multiple hydrocyclones are used in combination, differences in location and hydraulic conditions can easily affect the head loss of individual hydrocyclones, increasing the risk of blockage. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model discloses an adjustable overflow hydrocyclone and hydrocyclone assembly, which allows for active adjustment of the overflow head loss of the hydrocyclone during operation, minimizing the turbulence and shear forces experienced by the suspension and reducing damage to fragile clumps and flocs in the suspension.

[0006] The technical solution of this utility model is as follows:

[0007] An adjustable overflow hydrocyclone includes a hydrocyclone body with a hydrocyclone inlet, an overflow outlet, and an underflow outlet. The overflow outlet is connected to an overflow pipe. The hydrocyclone also includes an overflow regulator comprising a movable upper connector, a flexible hose, an expansion mechanism, and a lower connector fixing member. The upper end of the flexible hose is connected to the overflow pipe via the movable upper connector, and the lower end is connected to the overflow outlet via the lower connector fixing member. The movable upper connector and the hydrocyclone body are connected by the expansion mechanism. By changing the relative position between the movable upper connector and the lower connector fixing member through the movement of the expansion mechanism, the elongation of the flexible hose is changed, thereby changing the diameter of the flexible hose and thus altering the overflow head loss.

[0008] This technical solution utilizes the Poisson effect of a flexible hose; by stretching the flexible hose along its length, its diameter and flow cross-section can be reduced. Specifically, a flexible hose is used in the overflow pipe of the hydrocyclone. This flexible hose section can be stretched and adjusted via an expansion mechanism. The adjustment range of the expansion mechanism is continuously adjustable from the initial length of the flexible hose to its maximum elongation at break (e.g., 75%). One end of the flexible hose is fixed to the lower spigot fixing member, and the upper end is fixed to a movable upper spigot. The movement of the expansion mechanism causes the flexible hose to stretch or retract, thereby changing the head loss of the overflow.

[0009] As a further improvement of this utility model, the expansion mechanism includes a threaded rod and a movable suspension frame, with the hydrocyclone overflow pipe suspended on the movable suspension frame. The upper end of the threaded rod is connected to the movable suspension frame via a fixing member, and the lower end of the threaded rod is fixedly connected to the hydrocyclone body. The expansion mechanism drives the movable upper inlet to move down or up, causing the elastic hose to stretch or release, thus changing the overflow head loss. Using this technical solution, the elastic hose is sandwiched between the movable upper inlet connected to the hydrocyclone overflow pipe and the fixing member of the lower inlet connected to the hydrocyclone overflow outlet. The fixing member can change the distance between the suspension frame and the hydrocyclone body, thereby stretching the elastic hose and changing the overflow head loss.

[0010] As a further improvement of this utility model, the expansion mechanism includes a lower frame, which is fixedly connected to the hydrocyclone body, and the lower end of the threaded rod is fixedly connected to the middle part of the lower frame.

[0011] As a further improvement of this utility model, the fixing member is an adjusting nut.

[0012] As a further improvement of this utility model, the material of the elastic hose is rubber.

[0013] As a further improvement of this invention, the expansion mechanism includes a threaded rod and a pusher frame for the linear rack, suitable for hydrocyclones of any size. This mechanism allows for the use of flexible hose adjusters and is also suitable for commonly used hydrocyclone linear supports.

[0014] As a further improvement of this utility model, the hydrocyclone includes a feed distributor and an overflow collector; the hydrocyclone inlet is connected to the feed distributor, the outlet of the hydrocyclone overflow pipe faces the overflow collector, and one end of the threaded rod is fixed to the feed distributor.

[0015] This utility model discloses a hydrocyclone assembly, comprising multiple hydrocyclones with adjustable overflow as described in any of the above descriptions, arranged in parallel.

[0016] As a further improvement of this utility model, the hydrocyclone assembly includes multiple hydrocyclone bodies, an upper support frame, and a lower support frame. Each hydrocyclone body is provided with a hydrocyclone inlet, a hydrocyclone overflow pipe, a hydrocyclone overflow outlet, a hydrocyclone underflow outlet, and an overflow regulator with a threaded rod expansion mechanism as described above. Each hydrocyclone overflow outlet is connected to the corresponding hydrocyclone overflow pipe via an elastic hose. Each hydrocyclone inlet is connected to a feed distribution pipe, and the outlet of each hydrocyclone overflow pipe faces the overflow collector. A threaded rod is provided in the middle of each hydrocyclone body. The upper end of the threaded rod is connected to the upper support frame via a nut, and the lower end of the threaded rod is fixedly connected to the lower support frame. The upper support frame is connected to each hydrocyclone overflow pipe, and the lower support frame is fixedly connected to each hydrocyclone body.

[0017] This technical solution allows for the simultaneous adjustment of overflow head loss from multiple hydrocyclones without affecting the performance of any single device.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] Using the technical solution of this utility model, the flexible hose is clamped between the movable upper and lower connectors, thus the inlet and outlet diameters are fixed. When the hose is stretched, a gradual diameter change occurs, eventually reaching a stable diameter. This minimizes turbulence, reduces wear on materials and shear forces in the suspension, thereby reducing damage to fragile clumps and flocs in the suspension. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the hydrocyclone of Embodiment 1 of this utility model.

[0021] Figure 2This is a schematic diagram of the overflow regulator before and after adjustment in Embodiment 1 of this utility model; wherein, (a) is in the relaxed state before adjustment, and (b) is in the stretched state after adjustment.

[0022] Figure 3 This is a schematic diagram of the structure of the hydrocyclone of Embodiment 2 of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the hydrocyclone of Embodiment 3 of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the hydrocyclone assembly in Embodiment 4 of this utility model.

[0025] The reference numerals in the figures include:

[0026] 1-Hydrocyclone body, 2-Hydrocyclone overflow pipe, 3-Overflow regulator; 11-Hydrocyclone overflow outlet, 12-Hydrocyclone inlet, 13-Hydrocyclone underflow outlet, 14-Feed distributor, 15-Overflow collector.

[0027] 31-Modible upper socket, 32-Elastic hose, 33-Lower socket fixing piece, 34-Threaded rod, 35-Adjusting nut, 36-Modible suspension bracket, 37-Lower frame, 38-Upper socket bracket, 39-Lower socket bracket, 40-Fixing component, 41-Fixing nut. Detailed Implementation

[0028] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 and Figure 2As shown, an adjustable overflow hydrocyclone includes a hydrocyclone body 1. The hydrocyclone body 1 is provided with a hydrocyclone inlet 12, a hydrocyclone overflow outlet 11, and a hydrocyclone underflow outlet 13. The hydrocyclone overflow outlet 11 is connected to the hydrocyclone overflow pipe 2 through an overflow regulator 3. The overflow regulator 3 includes a movable upper insertion port 31, an elastic hose 32, an expansion mechanism, and a lower insertion port fixing member 33. The elastic hose 32 is partially used to change the cross-sectional area. The upper end of the flexible hose 32 is connected to the overflow pipe 2 of the hydrocyclone via a movable upper connector 31, and the lower end of the flexible hose 32 is connected to the overflow outlet 11 of the hydrocyclone via a lower connector fixing member 33. The movable upper connector 31 and the hydrocyclone body 1 are connected by an expansion mechanism. By changing the relative position between the movable upper connector 31 and the lower connector fixing member 33 through the movement of the expansion mechanism, the elongation of the flexible hose 32 is changed, thereby changing the diameter of the flexible hose 32 and thus changing the overflow head loss. Figure 2 As shown, by extending the length of the flexible hose 32 section from the relaxed state H0 to H x The diameter of the flexible hose 32, which had never been expanded, was reduced to a diameter D. x ,like Figure 2 As shown.

[0031] In this technical solution, since the flexible hose 32 is clamped within the movable upper connector 31 and the lower connector fixing member 33, the inlet and outlet diameters are fixed. When the flexible hose 32 is stretched, a gradual change in diameter occurs, eventually reaching a stable diameter. This minimizes turbulence, reducing wear on materials and shear forces in the suspension. Consequently, damage to fragile clumps and flocs in the suspension is also reduced.

[0032] Furthermore, the material of the flexible hose 32 is rubber. More specifically, the material of the flexible hose 32 is natural rubber or fluorinated rubber. The elongation at break depends on the material; the elongation at break of fluorinated rubber is 3 times the original length, and the elongation at break of natural rubber is more than 5 times the original length. The normal operating range is an elongation between 1 and 2.5. This corresponds to a change in cross-sectional flow area between 100% and approximately 50%. The impact on overflow head loss depends on the diameter change and the length of the reduced diameter. A longer cross-section can produce the same head loss with a larger operating diameter, thereby further reducing shear forces on the suspension. A typical range for the non-stretched flexible hose 32 section is 1-5 times the overflow pipe diameter.

[0033] Example 2

[0034] like Figure 3As shown, based on Embodiment 1, in this embodiment, the expansion mechanism includes a threaded rod 34 and a movable suspension frame 36. The hydrocyclone overflow pipe 2 is suspended on the movable suspension frame 36 and fixed by a fixing member 40. The upper end of the threaded rod 34 is fixed to the movable suspension frame 36 by an adjusting nut 35. The threaded rod 34 is located in the middle of the movable suspension frame 36, i.e., the central threaded rod 34. The elastic hose 32 is sandwiched between the movable upper inlet 31 and the lower inlet fixing member 33. The lower end of the threaded rod 34 is fixedly connected to the hydrocyclone body 1 or the feed distributor 14 by a fixing nut 41. The expansion mechanism drives the movable upper inlet 31 to move down or up, causing the elastic hose 32 to stretch or release, changing the overflow head loss. This technical solution is suitable for small hydrocyclones with a nominal diameter of less than 50 mm. The suspension structure has self-stabilization and is easy to modify existing equipment.

[0035] Example 3

[0036] A hydrocyclone with adjustable overflow, such as Figure 4 As shown, based on Embodiment 2, the overflow regulator 3 of this embodiment is improved. The expansion mechanism further includes a lower frame 37, which is fixedly connected to the hydrocyclone body 1. The elastic hose 32 is clamped between the movable suspension frame 36 and the lower frame 37. The lower end of the threaded rod 34 is fixedly connected to the middle of the lower frame 37 by a fixing nut 41. The hydrocyclone inlet 12 is connected to the feed distributor 14, and the outlet of the hydrocyclone overflow pipe 2 faces the overflow collector 15. One end of the threaded rod 34 is fixed to the feed distributor 14. The elongation of the elastic hose 32 is adjusted by adjusting the adjusting nut 35 to change the diameter of the elastic hose 32, thereby changing the overflow head loss. This technical solution is suitable for large hydrocyclones with a nominal diameter greater than 50 mm. The advantage of this design is that the structure is more compact and requires less top space.

[0037] Example 4

[0038] like Figure 5As shown, the hydrocyclone assembly includes multiple hydrocyclones with adjustable overflow, as shown in Embodiment 3, arranged in parallel. Specifically, the hydrocyclone assembly includes multiple hydrocyclone bodies 1, upper support brackets 38, and lower support brackets 39 arranged in parallel. Each hydrocyclone body 1 is provided with a hydrocyclone inlet 12, a hydrocyclone overflow pipe 2, a hydrocyclone overflow outlet 11, a hydrocyclone underflow outlet 13, and an overflow regulator 3. Each hydrocyclone overflow outlet 11 is connected to the corresponding hydrocyclone overflow pipe 2 via a flexible hose 32. Each hydrocyclone inlet 12 is connected to a feed distribution pipe, and the outlet of each hydrocyclone overflow pipe 2 faces the overflow collector 15. A threaded rod 34 is provided in the middle of each hydrocyclone body 1. The upper end of the threaded rod 34 is connected to the upper support bracket 38 through an adjusting nut 35, and the lower end of the threaded rod 34 is fixedly connected to the lower support bracket 39 through a fixing nut 41. The upper support bracket 38 is connected to each hydrocyclone overflow pipe 2 through a fixing component 40, and the lower support bracket 39 is fixedly connected to each hydrocyclone body 1.

[0039] This technical solution can simultaneously adjust the overflow head loss of multiple hydrocyclones without affecting the performance of individual devices.

[0040] As should be understood in the description of this utility model, terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 this utility model 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 utility model.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can be directly connected or indirectly connected 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 utility model according to the specific circumstances.

[0042] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes, but is not limited to, these specific embodiments. All equivalent changes made in accordance with the shape and structure of this utility model are within the protection scope of this utility model.

Claims

1. An adjustable overflow hydrocyclone, comprising a hydrocyclone body, wherein the hydrocyclone body is provided with a hydrocyclone inlet, a hydrocyclone overflow outlet, and a hydrocyclone underflow outlet, the hydrocyclone overflow outlet being connected to a hydrocyclone overflow pipe, characterized in that: It also includes an overflow regulator, which comprises a movable upper connector, an elastic hose, an expansion mechanism, and a lower connector fixing member. The upper end of the elastic hose is connected to the overflow pipe of the hydrocyclone through the movable upper connector, and the lower end of the elastic hose is connected to the overflow outlet of the hydrocyclone through the lower connector fixing member. The movable upper connector and the hydrocyclone body are connected by the expansion mechanism. By changing the relative position between the movable upper connector and the lower connector fixing member through the movement of the expansion mechanism, the elongation of the elastic hose is changed, thereby changing the diameter of the elastic hose and thus changing the head loss of the overflow.

2. The adjustable overflow hydrocyclone according to claim 1, characterized in that: The expansion mechanism includes a threaded rod and a movable suspension frame, and the overflow pipe of the hydrocyclone is suspended on the movable suspension frame; the upper end of the threaded rod is connected to the movable suspension frame by a fixing component, and the lower end of the threaded rod is fixedly connected to the hydrocyclone body; the expansion mechanism drives the movable upper inlet to move down or up, so that the elastic hose is stretched or released, thereby changing the head loss of the overflow.

3. The adjustable overflow hydrocyclone according to claim 2, characterized in that: The expansion mechanism includes a lower frame, which is fixedly connected to the hydrocyclone body, and the lower end of the threaded rod is fixedly connected to the middle part of the lower frame.

4. The adjustable overflow hydrocyclone according to claim 2, characterized in that: The fixing component is an adjusting nut.

5. The adjustable overflow hydrocyclone according to any one of claims 1 to 4, characterized in that: The flexible hose is made of rubber.

6. The adjustable overflow hydrocyclone according to claim 5, characterized in that: It includes a feed distributor and an overflow collector; the inlet of the hydrocyclone is connected to the feed distributor, the outlet of the hydrocyclone overflow pipe faces the overflow collector, and one end of the threaded rod is fixed to the feed distributor.

7. A hydrocyclone assembly, characterized in that: It includes multiple hydrocyclones with adjustable overflow as described in any one of claims 1 to 6, arranged in parallel.

8. The hydrocyclone assembly according to claim 7, characterized in that: It includes multiple hydrocyclone bodies, an upper support frame, and a lower support frame. Each hydrocyclone body is equipped with a hydrocyclone inlet, a hydrocyclone overflow outlet, a hydrocyclone underflow outlet, and an overflow regulator. Each hydrocyclone overflow outlet is connected to its corresponding hydrocyclone overflow pipe via a flexible hose. Each hydrocyclone inlet is connected to a feed distribution pipe, and the outlet of each hydrocyclone overflow pipe faces the overflow collector. Each hydrocyclone body has a threaded rod in the middle. The upper end of the threaded rod is connected to the upper support frame via a nut, and the lower end of the threaded rod is fixedly connected to the lower support frame. The upper support frame is connected to each hydrocyclone overflow pipe, and the lower support frame is fixedly connected to each hydrocyclone body.

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