Double-end buffer pressure-controlled hydrocyclone

Abstract

The utility model relates to cyclone structure technical field, concretely is a kind of double-end buffer pressure control's hydraulic cyclone, is equipped with cyclone, its characterized in that the sand outlet and overflow of cyclone are connected buffer pressure control device respectively, the buffer pressure control device include material buffer box, pneumatic pressure-increasing device, control valve, inflation pipe, the material buffer box is respectively equipped with feed inlet, discharge port and air inlet, the feed inlet is connected with the sand outlet or overflow of cyclone respectively, discharge port is connected with material conveying pipe, air inlet is connected with pneumatic pressure-increasing device through inflation pipe, control valve is installed on inflation pipe, it has the advantages such as simple structure, can real-time regulation and control cyclone overflow and sand production property, improve grading efficiency, low in cost.

Description

Technical Field

[0001] This utility model relates to the field of hydrocyclone structure technology, specifically a double-ended buffer pressure-controlled hydrocyclone. Background Technology

[0002] As is well known, hydrocyclones are widely used classification equipment across multiple industries, capable of classifying solid particles, separating stratified liquids, concentrating slurry, and degassing and desanding. Classification efficiency is the most important performance indicator for evaluating hydrocyclones in classification operations. Improving classification efficiency allows for more efficient discharge of coarse and heavy materials from the settling port and light and fine materials from the overflow port, separating components with different properties as much as possible, reducing the workload of subsequent processes, and achieving energy conservation and efficiency while lowering production costs.

[0003] To improve classification efficiency, various technical solutions for hydrocyclone structure optimization exist. However, when the feed properties of the hydrocyclone change, the hydrocyclone may become unable to adapt to changes in material particle size, concentration, or other properties, resulting in reduced classification efficiency. In such cases, replacing the hydrocyclone's underflow port or overflow pipe is often chosen to adapt the hydrocyclone to the new material properties as much as possible. In some mines with highly variable on-site conditions, an excessive number of spare hydrocyclone underflow ports and overflow pipes are required, increasing production costs and wasting resources. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hydrocyclone with a simple structure, capable of real-time control of the overflow and sedimentation product properties of the hydrocyclone, improving classification efficiency, and low cost, featuring a double-end buffer pressure control.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A double-ended buffer pressure-controlled hydrocyclone, comprising a hydrocyclone, characterized in that a buffer pressure control device is connected to the sedimentation port and the overflow port of the hydrocyclone respectively. The buffer pressure control device includes a material buffer tank, a pneumatic booster device, a control valve, and an air inlet. The material buffer tank is respectively provided with a feed inlet, a discharge port, and an air inlet. The feed inlet is connected to the sedimentation port or the overflow port of the hydrocyclone, the discharge port is connected to a material conveying pipe, and the air inlet is connected to the pneumatic booster device via an air inlet. A control valve is installed on the air inlet.

[0006] The hydrocyclone of this utility model includes a cylindrical section, a first conical section, a second conical section, a feed pipe, and an overflow pipe. The feed pipe is connected to the side of the cylindrical section, the overflow pipe is connected to the upper end of the cylindrical section, and the first and second conical sections are connected to the lower end of the cylindrical section in sequence. The lower end of the second conical section is provided with a sand settling port, and the end of the overflow pipe is an overflow port.

[0007] The overflow pipe described in this utility model is an overflow bend, one end of which is connected to the top of the cylindrical section of the hydrocyclone, and the other end of which is bent downwards.

[0008] The cyclone separator described in this invention is connected to the feed inlet of the material buffer tank via a connecting pipe.

[0009] The control valve described in this invention is an adjustable control valve, which controls the intake air volume by adjusting different opening degrees.

[0010] The material buffer box of this invention has non-coincident axes for its inlet and outlet.

[0011] The air inlet of the material buffer box described in this utility model is located on the side of the material buffer box, and the ratio of the distance of the air inlet from the designed top surface of the material buffer box to the height of the material buffer box is between 1 / 10 and 1 / 5.

[0012] This utility model, due to the above-mentioned structure, has the advantages of simple structure, real-time control of hydrocyclone overflow and sedimentation product properties, improved classification efficiency, and low cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: As shown in the attached figure, a double-ended buffer pressure-controlled hydrocyclone is provided, characterized in that a buffer pressure control device is connected to the sedimentation port and the overflow port of the hydrocyclone respectively. The buffer pressure control device includes a material buffer tank, a pneumatic booster device, a control valve, and an air inlet. The material buffer tank is provided with a feed inlet, a discharge port, and an air inlet. The feed inlet is connected to the sedimentation port 5 or the overflow port 13 of the hydrocyclone respectively. The discharge port is connected to the material conveying pipe. The air inlet is connected to the pneumatic booster device via the air inlet, and a control valve is installed on the air inlet.

[0015] Furthermore, the hydrocyclone includes a cylindrical section 2, a first conical section 3, a second conical section 4, a feed pipe 1, and an overflow pipe. The feed pipe 1 is connected to the side of the cylindrical section 2, the overflow pipe is connected to the upper end of the cylindrical section 2, the first conical section 3 and the second conical section 4 are connected to the lower end of the cylindrical section 2 in sequence, the lower end of the second conical section 4 is provided with a sand settling port 5, and the end of the overflow pipe is an overflow port 13.

[0016] Furthermore, the overflow pipe is an overflow bend 14, one end of which is connected to the top of the cylindrical section 2 of the hydrocyclone, and the other end of which is bent downwards.

[0017] Furthermore, the sand settling port 5 of the hydrocyclone is connected to the feed port of the material buffer tank via a connecting pipe 6.

[0018] Furthermore, the control valve is configured as an adjustable opening valve, which controls the intake air volume by adjusting different opening degrees.

[0019] Furthermore, the inlet and outlet axes of the material buffer box do not coincide.

[0020] Furthermore, the air inlet of the material buffer box is located on the side of the material buffer box, and the ratio of the distance from the top surface of the material buffer box to the height of the material buffer box is between 1 / 10 and 1 / 5.

[0021] Example: A double-ended buffer pressure-controlled hydrocyclone includes a hydrocyclone comprising a cylindrical section 2, a first conical section 3, a second conical section 4, a feed pipe 1, and an overflow pipe. The feed pipe 1 is connected to the side of the cylindrical section 2, the overflow pipe is connected to the upper end of the cylindrical section 2, and the first conical section 3 and the second conical section 4 are connected sequentially to the lower end of the cylindrical section 2. A sand settling port 5 is provided at the lower end of the second conical section 4, and the end of the overflow pipe is an overflow port 13. Buffer pressure control devices are respectively connected to the sand settling port 5 and the overflow port 13 of the hydrocyclone. The aforementioned buffer and pressure control devices are an underflow buffer and pressure control device and an overflow buffer and pressure control device. The underflow buffer and pressure control device includes an underflow material buffer tank 7, an underflow pneumatic booster device 11, an underflow control valve 9, and an underflow air inlet 10. The underflow material buffer tank 7 is equipped with an underflow inlet, an underflow outlet, and an underflow air inlet 8. The underflow inlet is connected to the sand settling port 5 of the hydrocyclone, the underflow outlet is connected to the underflow material conveying pipe 12, and the underflow air inlet 8 is connected to the underflow pneumatic booster device 11 via the underflow air inlet 10. An underflow control valve 9 is installed on the 10. The overflow buffer pressure control device includes an overflow material buffer tank 15, an overflow pneumatic booster device 19, an overflow control valve 17, and an overflow air inlet 18. The overflow material buffer tank 15 is provided with an overflow inlet, an overflow outlet, and an overflow air inlet 16. The overflow inlet is connected to the overflow port 13 of the hydrocyclone. The overflow outlet is connected to the overflow material conveying pipe. The overflow air inlet 16 is connected to the overflow pneumatic booster device 19 via the overflow air inlet 18. An overflow control valve 17 is installed on the overflow air inlet 18.

[0022] The overflow pipe is an overflow bend 14. One end of the overflow bend 14 is connected to the top of the cylindrical section 2 of the hydrocyclone, and the other end of the overflow bend 14 is bent downwards. The overflow bend includes a straight pipe and a bent pipe. The straight pipe extends into the cylindrical section of the hydrocyclone and is connected to the cylindrical section. One end of the bent pipe is connected to the straight pipe, and the other end is bent downwards.

[0023] The cyclone separator’s sand outlet 5 is connected to the inlet of the underflow material buffer tank 7 via a connecting pipe 6.

[0024] Both the underflow control valve 9 and the overflow control valve 17 are adjustable control valves, which adjust the intake air volume by different opening degrees.

[0025] The inlet and outlet axes of the underflow material buffer tank 7 and the overflow material buffer tank 15 do not coincide.

[0026] The underflow air inlet 8 and the overflow air inlet 16 of the underflow material buffer tank 7 and the overflow material buffer tank 15 are located on the side of the underflow material buffer tank 7 and the overflow material buffer tank 15. The position of the underflow air inlet 8 and the overflow air inlet 16 is such that the ratio of the distance from the designed top surface of the underflow material buffer tank 7 and the overflow material buffer tank 15 to the height of the underflow material buffer tank 7 and the overflow material buffer tank 15 is between 1 / 10 and 1 / 5.

[0027] The aforementioned pipes and ports are all connected via flanges.

[0028] The working principle is as follows: The incoming material is fed tangentially into the column section 2 of the hydrocyclone through the feed pipe 1 for buffering and preliminary classification. Under the action of centrifugal force, fluid drag, and other forces, the material rotates at high speed along the constriction direction of the first cone section 3 and the second cone section 4. During the rotation process, coarse and heavy particles gradually adhere to the wall, while light and fine particles tend to move towards the center. After feeding for a certain period of time, the buffer pressure control devices at the overflow end and the underflow end are activated. The underflow pneumatic booster device 11 and the overflow pneumatic booster device 19 are used to boost the pressure at the underflow end and the overflow end of the hydrocyclone. The booster gas is introduced by the pneumatic booster device and passes through the air inlet and the adjustable control valve in sequence, and enters the material buffer tank through the air inlet of the material buffer tank to control and regulate the pressure at the underflow end; the working method of the pneumatic booster device at the overflow end is the same. To evaluate the impact of the buffer pressure control device on the parameters of the hydrocyclone overflow and underflow products, material samples were taken from the discharge ends of the underflow material conveying pipe 12 and the overflow material conveying pipe, respectively, with and without pressure control device activation. Concentration, particle size, and other material parameters were measured. If the amount of fine sand entrained decreased, it indicates that the double-ended buffer pressure control device had a similar effect to narrowing the sand settling port 5. If the overflow fineness increased, it indicates that the double-ended buffer pressure control device had a similar effect to widening the sand settling port 5. During hydrocyclone operation, a pressure drop occurs when the material moves from the feed pipe 1 to the sand settling port 5 or the overflow port 13. This pressure drop typically does not change significantly when the hydrocyclone feed parameters are stable. Taking the sand settling end as an example, if only the sand settling end pressure control device is used for continuous aeration, the pressure drop of the material moving from the feed pipe 1 to the sand settling port 5 will increase relatively due to the increase in the pressure at the sand settling end. The increase in the pressure drop at the sand settling end means that the pressure drop at the overflow end will decrease relatively. The sand settling yield and the overflow yield will decrease and increase respectively due to the relative change in pressure drop, the overflow and sand settling concentrations will increase, and the amount of fine particles in the sand settling will decrease. This can achieve a similar effect to reducing the diameter of the sand settling port 5 / enlarging the diameter of the overflow port 13. Similarly, if only the overflow end pressure control device is activated, it can achieve a similar effect to enlarging the diameter of the sand settling port 5 / reducing the diameter of the overflow port 13. If both aeration devices are activated at the same time, the determination will be made based on the specific aeration volume and working status, combined with the aforementioned segmented conclusions, and based on the changes and magnitudes of the pressure drops at the sand settling end and the overflow end. After the pressure control effect, the sand settling material and the overflow material are fed into the downstream process through the material buffer tank from the bottom flow material conveying pipe 12 and the overflow material conveying pipe for operation. This utility model, due to the above-mentioned structure, has the advantages of simple structure, real-time control of hydrocyclone overflow and sedimentation product properties, improved classification efficiency, and low cost.

Claims

1. A double-ended buffered pressure-controlled hydrocyclone, comprising a hydrocyclone, characterized in that... A buffer pressure control device is connected to the sand settling port and the overflow port of the hydrocyclone. The buffer pressure control device includes a material buffer tank, a pneumatic booster device, a control valve, and an air inlet. The material buffer tank is provided with a feed inlet, a discharge port, and an air inlet. The feed inlet is connected to the sand settling port or the overflow port of the hydrocyclone, the discharge port is connected to the material conveying pipe, and the air inlet is connected to the pneumatic booster device via the air inlet. A control valve is installed on the air inlet.

2. A hydrocyclone with dual-end buffer and pressure control according to claim 1, characterized in that... The hydrocyclone includes a cylindrical section, a first conical section, a second conical section, a feed pipe, and an overflow pipe. The feed pipe is connected to the side of the cylindrical section, the overflow pipe is connected to the upper end of the cylindrical section, and the first and second conical sections are connected to the lower end of the cylindrical section in sequence. The lower end of the second conical section is provided with a sand settling port, and the end of the overflow pipe is an overflow port.

3. A hydrocyclone with dual-end buffer and pressure control according to claim 2, characterized in that... The overflow pipe is an overflow bend, one end of which is connected to the top of the cylindrical section of the hydrocyclone, and the other end of which is bent downwards.

4. A hydrocyclone with double-end buffer and pressure control according to claim 1, characterized in that... The cyclone separator's sand outlet is connected to the material buffer tank's inlet via a connecting pipe.

5. A hydrocyclone with double-end buffer and pressure control according to claim 1, characterized in that... The control valve is configured as an adjustable valve, and the intake air volume is controlled by adjusting the opening degree.

6. A hydrocyclone with dual-end buffer and pressure control according to claim 1, characterized in that... The inlet and outlet axes of the material buffer tank do not coincide.

7. A hydrocyclone with double-end buffer and pressure control according to claim 1, characterized in that... The air inlet of the material buffer box is located on the side of the material buffer box, and the ratio of the distance from the top surface of the material buffer box to the height of the material buffer box is between 1 / 10 and 1 / 5.

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