A bottom flow regulator and hydrocyclone of the threaded rod type

Abstract

This invention provides a threaded rod type underflow regulator and hydrocyclone. The underflow regulator includes an upper inlet fixing member, an elastic hose for connecting to the underflow outlet of the hydrocyclone, a telescopic mechanism, and a movable lower inlet. The two ends of the elastic hose are fixedly connected to the upper inlet fixing member and the movable lower inlet, respectively, and are connected by the telescopic mechanism. The telescopic mechanism includes a threaded rod and a fixing member. The upper end of the threaded rod is connected to the upper inlet fixing member, and the lower end of the threaded rod is connected to the movable lower inlet through the fixing member. By stretching or releasing the elastic hose through the telescopic mechanism, the diameter of the elastic hose is changed, thereby adjusting the underflow head loss and controlling the underflow rate. Using the technical solution of this invention, the underflow of the hydrocyclone can be easily adjusted during operation with minimal turbulence, minimizing wear on the underflow regulator and providing a self-cleaning function, reducing the risk of clogging.

Description

Technical Field

[0001] This utility model relates to the field of hydrocyclone technology, and in particular to a threaded rod type underflow regulator and hydrocyclone. Background Technology

[0002] Currently, hydrocyclones are the mainstream equipment for separating and classifying particulate suspensions. When the feed suspension is injected into the hydrocyclone radially, it is separated or classified into light and heavy components; the light components are discharged from the overflow port, while the heavy components are discharged through the underflow port. Among these parameters, the underflow nozzle diameter and underflow head loss are some of the parameters affecting the performance of the hydrocyclone. Fluctuations in feed solid concentration, particle size distribution, fluid viscosity, or feed pressure will all change the underflow head loss, thereby affecting the distribution ratio of underflow and overflow.

[0003] For underflow regulation, various valve types are available. The traditional approach involves lengthening the underflow nozzle and connecting a knife valve to the pipeline, using opening and closing operations to alter head loss and control underflow volume. However, these rigid valves are prone to severe wear and intense turbulence, and pose a high risk of clogging. To address wear, pneumatic ring structures are often used—these ring-shaped components made of elastic materials can change their size by adjusting internal air pressure, thereby reducing the flow area and controlling flow rate. While pneumatic rings can extend equipment life, the resulting abrupt changes in flow diameter can still induce significant turbulence, causing the breakup of lightweight aggregates and flocs. Another method is to discharge the underflow into a closed container, controlling the flow rate by adjusting the pressure inside the container. This method is common in oil-water separation, but when used for solid suspensions, the difficulty in real-time monitoring of the underflow status increases the risk of clogging and operational failures.

[0004] In the existing technology, the wear, turbulence and blockage of traditional valves, the flow disturbance of pneumatic rings, and the visibility defects of sealed containers all pose challenges to the stable operation of hydrocyclones, and there is an urgent need for a more optimized underflow control scheme. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model discloses a threaded rod type underflow regulator and hydrocyclone, which can be easily adjusted during operation, minimizes wear on the underflow regulator, and has a self-cleaning function, thereby reducing the risk of blockage.

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

[0007] A threaded rod type underflow regulator includes an upper insertion port fixing member, an elastic hose for connecting to the underflow outlet of a hydrocyclone, a telescopic mechanism, and a movable lower insertion port. The two ends of the elastic hose are fixedly connected to the upper insertion port fixing member and the movable lower insertion port, respectively. The upper insertion port fixing member and the movable lower insertion port are connected by the telescopic mechanism. The telescopic mechanism includes a threaded rod and a fixing member. The upper end of the threaded rod is connected to the upper insertion port fixing member, and the lower end of the threaded rod is connected to the movable lower insertion port through the fixing member. Specifically, the lower end of the elastic hose is fixed to a movable lower insertion port. By stretching or releasing the elastic hose through the telescopic mechanism, the diameter of the hose nozzle is changed, thereby adjusting the underflow head loss and controlling the underflow rate.

[0008] This technical solution utilizes the material properties of elastic hoses. Elastic materials are incompressible, meaning their volume remains constant during elastic deformation. Leveraging this Poisson effect, the diameter and flow cross-section of the elastic hose can be reduced by stretching it along its length. Specifically, by adjusting the fixed position of the threaded rod and the movable lower inlet, the nozzle of the elastic hose is stretched, thereby adjusting the underflow head loss and controlling the underflow rate.

[0009] As a further improvement of this utility model, the elastic hose is made of rubber. More specifically, the elastic hose is made of fluorinated rubber or natural rubber.

[0010] As a further improvement of this utility model, the fixing member is a fixing nut.

[0011] As a further improvement of this utility model, the upper insertion port fixing member is provided with an upper insertion port, the movable lower insertion port is provided with a lower insertion port, and the two ends of the elastic hose are respectively fixedly connected to the upper insertion port and the lower insertion port.

[0012] As a further improvement of this utility model, there are at least two threaded rods, which are symmetrically distributed around the elastic hose.

[0013] As a further improvement of this utility model, the lower end of the elastic hose is connected to a nozzle.

[0014] This utility model discloses a hydrocyclone, which includes a threaded rod type underflow regulator as described above.

[0015] As a further improvement of this utility model, the hydrocyclone includes a hydrocyclone body, a hydrocyclone inlet, a hydrocyclone overflow outlet, and a hydrocyclone underflow outlet. An elastic hose is connected to the hydrocyclone underflow outlet, and the upper insertion fastener is fixedly connected to the hydrocyclone body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The technical solution of this utility model utilizes an underflow regulator that extends an elastic hose via a telescopic mechanism. This allows for convenient adjustment of the underflow during operation while minimizing turbulence, thus minimizing shear stress on fragile suspended solids such as activated sludge. This reduces damage to fragile suspended solids and minimizes wear on the underflow regulator. The device also features a self-cleaning function, reducing the risk of clogging. Furthermore, there are no dead zones inside, at the front, or at the rear of the underflow regulator, preventing the gradual accumulation of solids. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hydrocyclone of the underflow regulator using a threaded rod type according to an embodiment of the present invention; wherein (a) is the initial state of the underflow regulator before adjustment, and (b) is the state of the underflow regulator after the telescopic mechanism stretches the elastic hose.

[0019] Figure 2 This is a structural schematic diagram of the threaded rod type underflow regulator in use according to an embodiment of this utility model.

[0020] The reference numerals in the figures include:

[0021] 1-Hydrocyclone body, 2-Hydrocyclone inlet, 3-Hydrocyclone overflow outlet, 4-Hydrocyclone underflow outlet, 5-Underflow regulator;

[0022] 51-Upper insertion fastener, 52-Elastic hose, 53-Modible lower insertion port, 54-Threaded rod, 55-Upper fixing nut, 56-Lower fixing nut. Detailed Implementation

[0023] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1 and Figure 2As shown, a hydrocyclone employing a threaded rod-type underflow regulator includes a hydrocyclone body 1, a hydrocyclone inlet 2, a hydrocyclone overflow outlet 3, and a hydrocyclone underflow outlet 4. The hydrocyclone underflow outlet 4 is connected to an underflow regulator 5. The underflow regulator 5 includes an upper insertion fixing member 51, an elastic hose 52 for connecting to the underflow outlet of the hydrocyclone, a telescopic mechanism, and a movable lower insertion port 53. One end of the elastic hose 52 is connected to the underflow outlet of the hydrocyclone, and the other end of the elastic hose 52 is a nozzle. The two ends of the elastic hose 52 are fixedly connected to the upper insertion fixing member 51 and the movable lower insertion port 53, respectively, meaning the elastic hose 52 is sandwiched between the upper insertion fixing member 51 and the movable lower insertion port 53. The upper insertion fixing member 51 and the movable lower insertion port 53 are connected by the telescopic mechanism. The telescopic mechanism is used to stretch or release the elastic hose 52, thereby changing the cross-sectional area of ​​the elastic hose 52.

[0025] The telescopic mechanism includes two or more threaded rods 54, the upper ends of which are screwed onto the upper insertion port fixing member 51 by upper fixing nuts 55; the movable lower insertion port 53 is guided to a variable position on the threaded rods 54 and fixed by lower fixing nuts 56.

[0026] By adjusting the fixed position of the movable lower socket 53 on the threaded rod 54, the distance H between the upper socket and the lower socket is increased. x The diameter of the flexible hose 52 has decreased from an ever-expanding diameter D0 to a reduced diameter D. x This allows for the adjustment of underflow head loss and control of underflow velocity.

[0027] By fixing the flexible hose 52 between the upper insertion fixing member 51 and the movable lower insertion port 53, the diameters of the inlet and outlet are fixed, and maintenance can be performed quickly without disassembling the hydrocyclone. When the flexible hose 52 is stretched, a gradual diameter change process is formed from the initial diameter to the final stable diameter. This minimizes turbulence and reduces material abrasion and shear forces in the suspension. Therefore, damage to fragile agglomerates and flocs in the suspension is also reduced. The smooth transition of the nozzle diameter from the initial diameter to the operating state avoids the risk of gradual solid accumulation. If large foreign objects enter the underflow, the nozzle's elasticity allows larger foreign objects to pass through in a self-cleaning manner.

[0028] The material of the flexible hose 52 determines its elongation at break. The material of the flexible hose 52 can be either fluorinated rubber or natural rubber. Fluorinated rubber has an elongation at break of 3 times its original length, while natural rubber has an elongation at break of more than 5 times its original length. The normal operating range of the flexible hose 52 used in the underflow regulator 5 is an elongation between 1 and 2.5, which corresponds to a change in cross-sectional flow area between 100% and 50%.

[0029] Furthermore, the telescopic mechanism with threaded rod 54 in this embodiment enables precise setting of the nozzle opening of the flexible hose 52 and allows for intuitive monitoring of the nozzle's status. This is particularly advantageous for suspensions with high solids content that are prone to clogging the underflow.

[0030] In the description of this utility model, it should be understood that 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.

[0031] 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.

[0032] 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. A threaded rod type underflow regulator, characterized in that: It includes an upper connector fixing member, an elastic hose for connecting to the underflow outlet of a hydrocyclone, a telescopic mechanism, and a movable lower connector. The two ends of the elastic hose are fixedly connected to the upper connector fixing member and the movable lower connector, respectively. The upper connector fixing member and the movable lower connector are connected by the telescopic mechanism. The telescopic mechanism includes a threaded rod and a fixing member. The upper end of the threaded rod is connected to the upper connector fixing member, and the lower end of the threaded rod is connected to the movable lower connector by the fixing member. By stretching or releasing the elastic hose through the telescopic mechanism, the diameter of the elastic hose can be changed, thereby adjusting the underflow head loss and controlling the underflow rate.

2. The threaded rod type underflow regulator according to claim 1, characterized in that: The flexible hose is made of rubber.

3. The threaded rod type underflow regulator according to claim 1, characterized in that: The fastener is a fixing nut.

4. The threaded rod type underflow regulator according to claim 1, characterized in that: The upper insertion port fixing component has an upper insertion port, the movable lower insertion port has a lower insertion port, and the two ends of the elastic hose are respectively fixedly connected to the upper insertion port and the lower insertion port.

5. The threaded rod type underflow regulator according to claim 1, characterized in that: There are at least two threaded rods, which are symmetrically located around the elastic hose.

6. A hydrocyclone, characterized in that: It includes a threaded rod type underflow regulator as described in any one of claims 1 to 5.

7. The hydrocyclone according to claim 6, characterized in that: It includes a hydrocyclone body, a hydrocyclone inlet, a hydrocyclone overflow outlet, and a hydrocyclone underflow outlet. The flexible hose is connected to the hydrocyclone underflow outlet, and the upper insertion fastener is fixedly connected to the hydrocyclone body.

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