Hydrodynamic cavitation reinforced cement sand cyclone separation device

Abstract

The utility model discloses a kind of hydraulic cavitation reinforced cement sand cyclone separation devices, including hydraulic cavitation pipe, feed assembly and cyclone separation component;One end of the hydraulic cavitation pipe is connected with the feed assembly, and the other end is connected with the cyclone separation component. The feed assembly includes silt mixed liquid inlet pipe, the silt mixed liquid inlet pipe is connected with the hydraulic cavitation pipe, and inlet valve is connected on the silt mixed liquid inlet pipe. The feed assembly further includes air compressor, and the air compressor output end is connected with the hydraulic cavitation pipe by first pipeline. The cyclone separation component includes cyclone separator, the inlet of the cyclone separator is connected with the hydraulic cavitation pipe by second pipeline, and the lower end of the cyclone separator is connected with sludge discharge valve, and the utility model aims at overcoming the defects of the prior art to provide a kind of hydraulic cavitation reinforced cement sand cyclone separation device, improve the recycling rate of sand particle.

Description

Technical Field

[0001] This utility model relates to a hydraulic cavitation enhanced cement sand cyclone separation device. Background Technology

[0002] Sedimentation in reservoirs is a global problem. Sedimentation reduces reservoir capacity, gradually diminishes their basic functions, and can even lead to their abandonment, causing significant impacts on the national economy. Furthermore, chemical substances carried in the sediment may remain in the reservoir, exacerbating water pollution. Therefore, reservoir dredging and desilting are crucial measures to reduce sediment load and restore effective reservoir capacity.

[0003] Currently, most of the silt generated from reservoir dredging is treated by mixing, which leads to the waste of sand-rich sediment. Given the scarcity of sand resources, recycling and utilizing this sand is of great significance. Current hydrocyclones are mostly used for solid-liquid separation in wastewater treatment. However, reservoir silt has a certain viscosity, and existing hydrocyclones result in incomplete silt separation and cannot separate mud and sand for recycling. Further separation of mud and sand is required, increasing processing time and intensity.

[0004] Therefore, a hydraulic cavitation-enhanced cement sand cyclone separation device is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to overcome the existing defects and provide a hydraulic cavitation enhanced cement sand cyclone separation device to improve the sand particle recycling rate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cavitation enhanced cement sand cyclone separator, comprising a hydraulic cavitation pipe, a feeding assembly, and a cyclone separation assembly;

[0007] One end of the hydraulic cavitation pipe is connected to the feed assembly, and the other end is connected to the cyclone separation assembly.

[0008] Preferably, the feeding assembly includes a sediment mixture inlet pipe, which is connected to the hydraulic cavitation pipe, and an inlet valve is connected to the sediment mixture inlet pipe.

[0009] Preferably, the feeding assembly further includes an air compressor, the output of which is connected to the hydraulic cavitation pipe via a first pipe.

[0010] Preferably, the cyclone separation assembly includes a cyclone separator, the inlet end of which is connected to the hydraulic cavitation pipe via a second pipe, a sludge discharge valve is connected to the lower sludge discharge port of the cyclone separator, and a sand discharge valve is connected to the lower sand discharge port of the cyclone separator, the sand discharge port being located on the side wall of the lower conical section of the cyclone separator.

[0011] Preferably, the upper end of the side wall of the cyclone separator is provided with a drain outlet and connected to a drain valve.

[0012] Preferably, the lower conical section of the cyclone separator is provided with an inclined filter screen.

[0013] Preferably, the inner wall of the hydraulic cavitation pipe has a structure of two opposing conical holes.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This hydraulic cavitation enhanced cement-sand cyclone separation device releases enormous energy when the cavitation bubbles generated by the hydraulic cavitation pipe burst, creating a high-temperature, high-pressure environment and enormous internal force and shear force. This destroys the surface tension and cohesion of solid particles, promoting cement-sand separation with a separation rate of over 98%, solving the problem of incomplete solid-liquid separation in previous cyclone separators. The filter screen separates mud and sand for recycling, avoiding the waste of sand resources. The bursting of cavitation bubbles can also bring about various physicochemical effects. Under cavitation conditions, water molecules can be decomposed into free radicals, which oxidize and degrade pollutants in the mud-sand mixture, reducing the potential secondary pollution.

[0015] This hydraulic cavitation enhanced cement-sand cyclone separator has a simple structure and is easy to operate. It utilizes the principle of hydraulic cavitation to break the cohesion between cement and sand, promotes the full separation of mud and sand, and improves the separation effect of previous cyclone separators. Through the setting of filter screen, mud and sand can be recycled separately. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the hydraulic cavitation enhanced cement sand cyclone separation device of this utility model;

[0018] Figure 2 This is a schematic diagram of the hydraulic cavitation pipe of this utility model.

[0019] In the diagram: 1. Inlet pipe for mud and sand mixture; 2. Inlet valve; 3. Air compressor; 4. Hydraulic cavitation pipe; 5. Cyclone separator; 6. Filter screen; 7. Sand discharge valve; 8. Sludge discharge valve; 9. Drain valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-2 A hydraulic cavitation-enhanced cement sand cyclone separator includes a hydraulic cavitation pipe 4, a feeding assembly, and a cyclone separation assembly; one end of the hydraulic cavitation pipe 4 is connected to the feeding assembly, and the other end is connected to the cyclone separation assembly. The inner wall of the hydraulic cavitation pipe 4 has a structure of two opposing conical holes.

[0022] Specifically, the feeding assembly includes a sediment mixture inlet pipe 1, which is connected to a hydraulic cavitation pipe 4, and an inlet valve 2 is connected to the sediment mixture inlet pipe 1. The feeding assembly also includes an air compressor 3, the output of which is connected to the hydraulic cavitation pipe 4 through a first pipe. A pressure gauge is installed at the air inlet of the hydraulic cavitation pipe 4.

[0023] Specifically, when the mud-sand mixture enters the hydraulic cavitation pipe 4, the air compressor 3 is started and the air flow is controlled by the pressure gauge. The high temperature and high pressure environment and mechanical disturbance generated by hydraulic cavitation promote the separation of cement and sand in the mud-sand mixture.

[0024] Specifically, the cyclone separation component includes a cyclone separator 5. The inlet end of the cyclone separator 5 is connected to the hydraulic cavitation pipe 4 through a second pipe. The sludge discharge port at the lower end of the cyclone separator 5 is connected to a sludge discharge valve 8, and the sand discharge port at the lower end of the cyclone separator 5 is connected to a sand discharge valve 7. The sand discharge port is located on the side wall of the lower conical section of the cyclone separator 5.

[0025] Specifically, a drain outlet is provided at the upper end of the side wall of the cyclone separator 5, and a drain valve 9 is connected to it. Inside the cyclone separator, a spiral guide plate and an overflow pipe are arranged around the axis.

[0026] Specifically, an inclined filter screen 6 is installed inside the lower conical section of the hydrocyclone separator 5. The angle between the filter screen and the horizontal direction is 30-60 degrees, and the diameter is 0.05mm. The filter screen is positioned at half the height of the lower conical section of the hydrocyclone separator 5.

[0027] During operation, the silt mixture enters the hydraulic cavitation pipe 4 through the inlet valve 2, forming a negative pressure chamber inside. Air enters the hydraulic cavitation pipe 4 through the air compressor 3, forming a large number of microbubbles. When these bubbles burst, they release a large amount of energy, creating a high-temperature and high-pressure environment. The shock waves generated when the cavitation bubbles collapse bombard the silt mixture, disrupting the adhesion between water and particles and between particles. This promotes the detachment of water from the surface and crevices of the silt, improving the degree of silt separation. At the same time, hydraulic cavitation causes water decomposition, producing free radicals that damage the structure of pollutants and reduce their concentration.

[0028] After passing through the hydraulic cavitation pipe 4, the mud and sand mixture enters the hydrocyclone 5. The mud and sand mixture enters the spiral guide plate of the hydrocyclone 5 tangentially and spirals down from top to bottom to form a spiral water flow. Under the action of centrifugal force, the mud and sand particles are distributed on the outer layer of the spiral water flow and enter the external channel, where they settle in the cone-shaped slag hopper. The water is discharged through the overflow port and the drain valve 9.

[0029] Depending on the particle size, the mud and sand particles that settle in the cone-shaped slag hopper are filtered through the filter screen 6 installed therein. The smaller mud particles pass through the screen and are discharged through the mud discharge valve 8 at the bottom, while the larger sand particles are trapped on the filter screen 6 and discharged through the sand discharge valve 7. The screen needs to be cleaned regularly.

[0030] This hydraulic cavitation-enhanced cement-sand cyclone separator utilizes a hydraulic cavitation pipe to generate cavitation bubbles. The rupture of these bubbles releases enormous energy, creating a high-temperature, high-pressure environment, along with significant internal forces and shear forces. This disrupts the surface tension and cohesion of solid particles, promoting cement-sand separation with a separation rate exceeding 98%. This solves the problem of incomplete solid-liquid separation found in previous cyclone separators. The included filter screen separates and recycles mud and sand, preventing the waste of sand resources. Furthermore, the rupture of cavitation bubbles brings various physicochemical effects. Under cavitation conditions, water molecules can be decomposed into free radicals, which oxidize and degrade pollutants in the mud-sand mixture, reducing potential secondary pollution.

[0031] This hydraulic cavitation enhanced cement-sand cyclone separator has a simple structure and is easy to operate. It utilizes the principle of hydraulic cavitation to break the cohesion between cement and sand, promotes the full separation of mud and sand, and improves the separation effect of previous cyclone separators. Through the setting of filter screen, mud and sand can be recycled separately.

[0032] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydrodynamic cavitation enhanced cement sand cyclone separation device, characterized in that, Includes a hydraulic cavitation tube (4), a feed assembly, and a cyclone separator assembly; One end of the hydraulic cavitation pipe (4) is connected to the feed assembly, and the other end is connected to the cyclone separator assembly; The feeding assembly includes a mud-sand mixture inlet pipe (1), which is connected to the hydraulic cavitation pipe (4), and an inlet valve (2) is connected to the mud-sand mixture inlet pipe (1). The feeding assembly also includes an air compressor (3), the output end of which is connected to the hydraulic cavitation pipe (4) through a first pipe. The cyclone separation assembly includes a cyclone separator (5), the inlet end of which is connected to the hydraulic cavitation pipe (4) through a second pipe, a sludge discharge port at the lower end of the cyclone separator (5) is connected to a sludge discharge valve (8), and a sand discharge port at the lower end of the cyclone separator (5) is connected to a sand discharge valve (7). The sand discharge port is located on the side wall of the lower conical section of the cyclone separator (5).

2. The hydraulic cavitation enhanced cement sand cyclone separation device according to claim 1, characterized in that, The upper side wall of the cyclone separator (5) is provided with a drain outlet and connected to a drain valve (9).

3. The hydraulic cavitation enhanced cement sand cyclone separation device according to claim 1, characterized in that, The lower conical section of the cyclone separator (5) is equipped with an inclined filter screen (6).

4. The hydraulic cavitation enhanced cement sand cyclone separation device according to claim 1, characterized in that, The inner wall of the hydraulic cavitation pipe (4) has a structure of two conical holes facing each other.

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