Integrated treatment device for mine drainage water

Abstract

The utility model relates to the technical field of mine drainage water treatment devices, in particular to an integrated treatment device for mine drainage water, which comprises a flow pump for pressurizing and conveying the mine drainage water, a sedimentation tank for sedimentation treatment and a filter for filtering water, the device further comprises a high-pressure conveying pipeline and an anti-scaling turbulent flow joint connected in the high-pressure conveying pipeline in series. The specific structure of the anti-scaling turbulent flow section comprises a multi-stage Venturi tube and a cavitation unit array which is distributed on the inner wall of the initial position of the expansion section of the expansion section pipeline and used for generating a transient cavitation vortex core in a low-pressure area. The anti-scaling turbulent flow joints are connected in series in the high-pressure conveying pipeline, the transient cavitation effect in fluid dynamics is utilized, the crystallization process of scaling ions is actively destroyed, and initial soft scale is stripped, so that the problems of pipeline scaling and blockage caused by high hardness of mine drainage water are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine dewatering water treatment device technical field especially relates to a kind of integrated processing device for mine dewatering water. BACKGROUND

[0002] Mine dewatering water is the underground water that is affected from underground aquifer and gushes out in the process of coal mining, and effective treatment is the key link to realize the recycling of coal mine water resources and environmental protection;The existing mine dewatering water integrated processing device usually includes flow pump, sedimentation tank, filter and high-pressure conveying pipeline and other core components;Work flow is as follows: mine dewatering water first enters sedimentation tank and is preliminarily deposited, and removes large particle impurities;The supernatant after deposition is pressurized by flow pump, and is conveyed to filter by high-pressure conveying pipeline for depth filtration, finally makes water quality reach reuse or discharge standard.

[0003] Mine dewatering water generally has high hardness characteristics (contains a large amount of Ca 2+ , Mg + And other scale-forming ions), and is prone to scaling and plugging in high-pressure conveying pipeline;Specific performance is as follows: when water flows through pump outlet, elbow, valve and other local flow field mutation areas, uneven flow velocity distribution leads to local pressure drop;If pressure drops below the saturation vapor pressure of water, carbonates, sulfates and other dissolved in water will crystallize and precipitate due to supersaturation;At the same time, the roughness of inner wall of pipeline or initial deposition of small particles will act as crystal nucleus, accelerate crystal growth and adhere to pipe wall, forming hard scale layer;Hard scale will significantly reduce the flow cross section of pipeline and increase flow resistance, resulting in increased energy consumption of flow pump;If scaling occurs at valve, it may cause valve core to be stuck, affecting adjustment function;If scaling occurs at precision instruments such as flow meter and pressure sensor, it may cause measurement data to be inaccurate or even equipment to be damaged;Currently, the commonly used scale inhibition method in the industry is mainly by adding chemical scale inhibitor or installing ultrasonic scale inhibition equipment;However, chemical scale inhibitor needs to be continuously added, which is high in cost and may introduce secondary pollution;Ultrasonic scale inhibition equipment has poor adaptability to complex flow field, and the scale inhibition effect is unstable, which is difficult to meet the process requirements of mine dewatering water treatment for efficient and continuous scale inhibition.

[0004] In view of the above problems, the utility model provides an integrated processing device for mine dewatering water, which uses transient cavitation effect in fluid dynamics to actively destroy the crystallization process of scale-forming ions and strip initial soft scale, thereby solving the problems of pipeline scaling and plugging caused by high hardness of mine dewatering water. SUMMARY

[0005] In order to overcome the problems of rapid crystallization of calcium carbonate / sulfate and adhesion to pipe walls caused by high water hardness in traditional mine drainage integrated treatment devices, which leads to a reduction in the flow cross-section of the pipeline and ultimately to scaling and blockage.

[0006] The technical solution of this utility model is as follows: an integrated treatment device for mine drainage water, comprising a flow pump for pressurizing and conveying the mine drainage water, a sedimentation tank for sedimentation treatment, and a filter for water filtration, wherein the sedimentation tank is connected upstream of the flow pump, and the filter is connected downstream of the flow pump; the device further comprises:

[0007] A high-pressure delivery pipeline is used to connect the input end of the flow pump to the outlet end of the sedimentation tank, and to connect the output end of the flow pump to the inlet end of the filter;

[0008] The anti-scaling and turbulence-reducing joint is a modular pipe section structure that is connected in series in the high-pressure transmission pipeline;

[0009] The specific structure of the anti-scaling turbulence section includes:

[0010] A multi-stage venturi tube consists of alternating contraction section tubing, throat section tubing, and expansion section tubing, used to generate a low-pressure zone in the throat section tubing;

[0011] A cavitation unit array is distributed on the inner wall at the beginning of the expansion section of the expansion section of the pipeline, and is used to generate transient cavitation vortex nuclei in the low-pressure area.

[0012] Preferably, the water input from the external water supply equipment is settled in a sedimentation tank to initially remove larger impurities or particulate matter from the liquid. A flow pump then guides the liquid from the upper section of the sedimentation tank along a high-pressure delivery pipeline into a filter for filtration. When the water flows through the multi-stage Venturi throat section of the high-pressure delivery pipeline, the flow velocity increases dramatically, and the pressure drops sharply, falling below the saturated vapor pressure of water. At this point, dissolved gases in the water precipitate out, forming microbubbles. Simultaneously, the water itself may also vaporize, forming steam microbubbles. When the water flow impacts the cavitation unit array at the beginning of the downstream expansion section pipeline, it will... A strong, localized low-pressure vortex zone is generated behind the array, further inducing and enhancing transient cavitation. These microbubbles rapidly enter the downstream pressure recovery zone, i.e., the expansion section of the pipeline, with the water flow. Under high pressure, the cavitation bubbles collapse instantly, and the collapse process is accompanied by local high-temperature and high-pressure points, high-speed microjets, and shock waves. Among them, the high-speed microjets are directed towards the solid wall of the Venturi tube structure. The microjets generated by cavitation collapse, the shock wave disturbance, and the extreme local high-temperature and high-pressure conditions can effectively interfere with and destroy the formation and orderly growth of microcrystal nuclei such as calcium carbonate and calcium sulfate in the water, making it difficult for them to stably adhere to the pipe wall and form hard scale. At the same time, the microjets and shock waves act directly on the pipe wall, effectively stripping away the soft scale that has formed in the early stage and has not yet fully hardened, allowing it to be discharged with the water flow and preventing further solidification and accumulation. In addition, the continuous flow of water causes cavitation to be continuously induced and collapsed at specific locations, forming a continuous anti-scaling and mild descaling mechanism, thereby effectively solving the problem of pipe scaling and blockage caused by the high hardness of mine drainage water.

[0013] Preferably, the cavitation unit is a truncated conical truncated structure, the area ratio of the inner wall connection surface of the cavitation unit and the expansion section pipeline to the top plane of the cavitation unit is between 0.25 and 0.4, and the inclination angle of the conical truncated sidewall of the cavitation unit is between 30° and 45°.

[0014] Preferably, the multi-stage Venturi tube includes at least two sets of Venturi tubes, which are connected in series along the coaxial direction. The constriction section of the initial Venturi tube is connected to the high-pressure transmission pipeline through a flange, and the expansion section of the final Venturi tube is connected to the high-pressure transmission pipeline through a flange.

[0015] Preferably, the cavitation units are distributed in a circumferentially asymmetric manner and / or an axially gradient manner, wherein:

[0016] The circumferential asymmetric distribution specifically refers to: setting at least six sets of conical truss clusters on the circumference of the pipe cross-section of the expansion section pipeline, with the central angles of adjacent conical truss clusters offset by 20°~30°;

[0017] The axial gradient distribution is as follows: concentrated in the first 1 / 3 of the expansion section, at least two rows of conical platforms are arranged along the direction of water flow, and the circumferential position of each row of conical platforms is staggered from the front row by 5°~10°.

[0018] Preferably, the installation position of the anti-scaling turbulence joint satisfies at least one of the following:

[0019] The high-pressure delivery pipeline located at the output end of the flow pump;

[0020] Installed on the straight pipe sections at both ends where the pipe bend angle is greater than 45°.

[0021] Preferably, the anti-scaling turbulence joint is made of wear-resistant and cavitation-resistant material, including 316L stainless steel with a carbonized coating or 17-4PH precipitation-hardening stainless steel.

[0022] The beneficial effects of this utility model are:

[0023] 1. The water input from the external water supply equipment is settled in a sedimentation tank to initially remove larger impurities or particulate matter. A flow pump then guides the liquid from the upper section of the sedimentation tank along a high-pressure delivery pipeline to a filter for filtration. As the water flows through the multi-stage Venturi throat section of the high-pressure delivery pipeline, the flow velocity increases dramatically, and the pressure drops sharply, falling below the saturated vapor pressure of water. At this point, dissolved gases in the water precipitate, forming microbubbles. Simultaneously, the water itself may also vaporize, forming steam microbubbles. When the water flow impacts the cavitation unit array at the beginning of the downstream expansion section pipeline, a strong, localized low-pressure vortex zone is generated behind the cavitation unit array, further inducing and enhancing transient cavitation. These microbubbles rapidly enter the downstream pressure recovery zone, i.e., the expansion section pipeline, in the high-pressure ring... Under these conditions, cavitation bubbles collapse instantly, accompanied by localized high-temperature and high-pressure points, high-speed microjets, and shock waves. The high-speed microjets point towards the solid wall of the Venturi tube structure. The microjets, shock wave disturbances, and extreme localized high-temperature and high-pressure conditions generated by cavitation bubble collapse can effectively interfere with and destroy the formation and orderly growth of microcrystal nuclei such as calcium carbonate and calcium sulfate in the water, making it difficult for them to stably adhere to the pipe wall and form hard scale. At the same time, the microjets and shock waves act directly on the pipe wall, effectively stripping away the soft scale that has formed in the early stages and has not yet fully hardened, allowing it to be discharged with the water flow and preventing further solidification and accumulation. In addition, the continuous flow of water causes cavitation to be continuously induced and collapsed at specific locations, forming a continuous anti-scaling and mild descaling mechanism, thereby effectively solving the problem of pipe scaling and blockage caused by the high hardness of mine drainage water.

[0024] 2. This device is easy to install and has no moving parts. It is driven solely by the kinetic energy of water and requires no external energy source. Compared with the costly chemical dosing method, the energy-intensive electromagnetic / ultrasonic technology, and the easily clogged conventional filtration devices, this device uses a flange connection. When it fails or requires maintenance, it can be removed for replacement or inspection simply by closing the corresponding valve. Its operation requires no energy consumption, does not consume any chemicals, and is free from frequent cleaning, resulting in significant operating cost advantages. Attached Figure Description

[0025] Figure 1 The diagram shown is a three-dimensional structural schematic of the integrated treatment device for mine drainage water according to this utility model.

[0026] Figure 2 The diagram shown is a first cross-sectional view of the integrated treatment device for mine drainage water according to this utility model.

[0027] Figure 3 The diagram shown is a second cross-sectional view of the integrated treatment device for mine drainage water according to this utility model.

[0028] Figure 4 The diagram shown is a third cross-sectional view of the integrated treatment device for mine drainage water according to this utility model.

[0029] Explanation of reference numerals in the attached diagram: 1. Flow pump; 2. Sedimentation tank; 3. Filter; 4. High-pressure delivery pipeline; 5. Anti-scaling turbulence joint; 501. Multi-stage Venturi tube; 502. Cavitation unit; 5011. Contraction section pipeline; 5012. Throat section pipeline; 5013. Expansion section pipeline. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Please see Figure 1 and Figure 2 This utility model provides an embodiment: an integrated treatment device for mine drainage water, including a flow pump 1 for pressurizing and conveying the mine drainage water, a sedimentation tank 2 for settling the water, and a filter 3 for filtering the water. The sedimentation tank 2 is connected upstream of the flow pump 1, and the filter 3 is connected downstream of the flow pump 1. The device also includes:

[0032] High-pressure delivery pipeline 4 is used to connect the input end of the flow pump 1 to the outlet end of the sedimentation tank 2, and to connect the output end of the flow pump 1 to the inlet end of the filter 3.

[0033] The anti-scaling and turbulence-reducing section 5 is a modular pipe section structure and is connected in series in the high-pressure transmission pipeline 4;

[0034] The specific structure of the anti-scaling turbulence section 5 includes:

[0035] The multi-stage venturi tube 501 consists of alternating contraction section pipe 5011, throat section pipe 5012 and expansion section pipe 5013, and is used to generate a low-pressure area in the throat section pipe 5012.

[0036] The cavitation unit 502 array is distributed on the inner wall of the expansion section 5013 at the beginning of the expansion section, and is used to generate transient cavitation vortex nuclei in the low-pressure area.

[0037] The water input from the external water supply equipment is settled in sedimentation tank 2 to initially remove larger impurities or particles from the liquid. The liquid from the upper section of sedimentation tank 2 is then pumped through a high-pressure pipeline to filter 3 for filtration by a flow pump 1. When the water flows through the throat section 5012 of the multi-stage Venturi tube 501 in the high-pressure pipeline, the flow velocity increases dramatically, and the pressure drops sharply, falling below the saturated vapor pressure of water. At this point, dissolved gases in the water precipitate out to form microbubbles, and the water itself may also vaporize to form steam microbubbles. When the water flow impacts the cavitation unit 502 array at the beginning of the downstream expansion section 5013, it will... A strong, localized low-pressure vortex zone is generated behind the cavitation unit 502 array, further inducing and enhancing transient cavitation. These microbubbles rapidly enter the downstream pressure recovery zone, i.e., the expansion section pipe 5013, with the water flow. Under high pressure, the cavitation bubbles collapse instantly, and the collapse process is accompanied by local high-temperature and high-pressure points, high-speed microjets, and shock waves. Among them, the high-speed microjets are directed towards the solid wall of the Venturi tube structure. The microjets generated by cavitation bubble collapse, the shock wave disturbance, and the extreme local high-temperature and high-pressure conditions can effectively interfere with and destroy the formation and orderly growth of microcrystal nuclei such as calcium carbonate and calcium sulfate in the water, making it difficult for them to stably adhere to the pipe wall and form hard scale. At the same time, the microjets and shock waves act directly on the pipe wall, effectively stripping away the soft scale that has formed in the early stage and has not yet fully hardened, allowing it to be discharged with the water flow and preventing further solidification and accumulation. In addition, the continuous flow of water causes cavitation to be continuously induced and collapsed at specific locations, forming a continuous anti-scaling and mild descaling mechanism.

[0038] Please see Figure 3 and Figure 4In this embodiment, the cavitation unit 502 is a truncated conical truncated structure. The area ratio of the inner wall connection surface of the cavitation unit 502 and the expansion section pipe 5013 to the top plane of the cavitation unit 502 is between 0.25 and 0.4. The inclination angle of the side wall of the conical truncated structure of the cavitation unit 502 is between 30° and 45°. The multi-stage Venturi tube 501 includes at least two sets of Venturi tubes, which are connected in series along the coaxial direction. The contraction section pipe 5011 of the initial Venturi tube is connected to the high-pressure delivery pipe 4 through a flange, and the expansion section pipe 5013 of the final Venturi tube is connected to the high-pressure delivery pipe 4 through a flange. The cavitation units 502 are distributed in a circumferentially asymmetrical distribution and / or an axial gradient distribution, wherein:

[0039] The circumferential asymmetric distribution is specifically as follows: at least six sets of conical truss clusters are set on the circumference of the pipe cross-section of the expansion section pipe 5013, and the central angles of adjacent conical truss clusters are offset by 20°~30°.

[0040] The axial gradient distribution is as follows: concentrated in the first 1 / 3 of the expansion section, at least two rows of conical platforms are arranged along the direction of water flow, and the circumferential position of each row of conical platforms is staggered from the front row by 5°~10°.

[0041] During use, the water flow is guided to separate by the inclined sidewall of the conical boss, forming an axial low-pressure vortex core area behind the conical boss; the top plane of the conical boss disperses the cavitation collapse impact force, so that the micro-jet mainly acts on the inner wall of the pipe rather than the conical boss body.

[0042] The installation location of the anti-scaling baffle 5 shall meet at least one of the following requirements:

[0043] The high-pressure delivery pipeline is located at the output end of the flow pump 1;

[0044] Installed on the straight pipe sections at both ends where the pipe bend angle is greater than 45°.

[0045] The anti-scaling turbulence section 5 is made of wear-resistant and cavitation-resistant materials, including 316L stainless steel or 17-4PH precipitation-hardening stainless steel with a carbonized coating on the surface.

[0046] The integrated treatment device for mine drainage water of this utility model consists of a sedimentation tank 2, a flow pump 1, a filter 3, a high-pressure conveying pipeline 4, and an anti-scaling turbulence section 5. The outlet end of the sedimentation tank 2 is connected to the input end of the flow pump 1 through the high-pressure conveying pipeline 4, and the output end of the flow pump 1 is connected to the inlet end of the filter 3 through another section of the high-pressure conveying pipeline 4. The anti-scaling turbulence section 5 is a modular pipe section connected in series in the high-pressure conveying pipeline 4 through flanges. Its installation position is preferably selected from the high-pressure pipeline section at the output end of the flow pump 1 or the straight pipe sections at both ends with a bend angle greater than 45°.

[0047] When the device is running, the mine drainage water first enters the sedimentation tank 2 for preliminary sedimentation to remove large particles of impurities. After sedimentation, the supernatant is pressurized by the flow pump 1 and flows along the high-pressure conveying pipeline 4 to the filter 3. In the high-pressure conveying pipeline 4, the water flow needs to pass through the anti-scaling turbulence section 5 in sequence, which actively inhibits scaling by utilizing its internal structure, and finally enters the filter 3 for deep filtration to meet the standards for reuse or discharge.

[0048] The core structure of the anti-scaling turbulence section 5 is a combination of a multi-stage Venturi tube 501 and a cavitation unit 502 array. The multi-stage Venturi tube 501 is composed of at least two sets of Venturi tubes connected in series along the coaxial direction. Each stage of the Venturi tube includes a contraction section pipe 5011, a throat section pipe 5012, and an expansion section pipe 5013. The contraction section of the initial Venturi tube is connected to the high-pressure transmission pipeline 4 through a flange, and the expansion section of the final Venturi tube is connected to another section of pipeline through a flange.

[0049] Cavitation units 502 are arrayed on the inner wall at the beginning of each stage of the Venturi tube expansion section. Each cavitation unit 502 is a truncated conical truncated structure. The area ratio of its connection surface with the inner wall of the expansion section to its top plane is 0.25~0.4, and the inclination angle of the side wall of the conical truncated structure is 30°~45°. The distribution of cavitation units 502 adopts a combination of circumferential asymmetry and axial gradient: circumferentially, at least six groups of conical truncated structures are set on the circumference of the pipe cross-section, and the central angle of adjacent groups is offset by 20°~30°; axially, cavitation units 502 are concentrated in the first 1 / 3 of the expansion section, and at least two rows of conical truncated structures are arranged along the water flow direction, with each row offset from the front row by 5°~10°.

[0050] The anti-scaling turbulence section 5 is made of wear-resistant and cavitation-resistant materials, such as 316L stainless steel with a carbonized coating or 17-4PH precipitation-hardening stainless steel, to resist the impact of high-speed micro-jet generated by cavitation collapse.

[0051] When high-pressure water flows through the throat of the multi-stage Venturi tube 501, the flow velocity increases dramatically and the pressure drops sharply to below the saturated vapor pressure of water. At this time, the gas dissolved in the water is released to form microbubbles, and the water itself vaporizes to produce steam microbubbles. When the water flow impacts the cavitation unit 502 array at the beginning of the downstream expansion section, the conical truss structure guides the water flow to separate, forming a strong local low-pressure vortex region behind it, which further induces and strengthens the transient cavitation phenomenon and generates a large number of microbubbles.

[0052] These microbubbles enter the pressure recovery zone of the expansion section with the water flow, and collapse instantaneously under high pressure. During the collapse process, local high-temperature and high-pressure points, high-speed microjet streams, and shock waves are generated. Among these, the high-speed microjet streams directly target the inner wall of the Venturi tube, and together with the shock waves, produce the following effects: First, extreme local conditions disrupt the calcium content of the water. 2+ Mg 2+ With CO32- SO4 2- The formation of microcrystal nuclei disrupts their orderly growth, making it difficult for crystals to stably adhere to the pipe wall and form hard scale. Secondly, the microjet and shock wave act directly on the pipe wall, peeling off the soft scale that has formed in the early stage and has not yet fully hardened, allowing it to be discharged with the water flow and preventing the soft scale from further solidifying into hard scale.

[0053] By connecting multiple venturi tubes 501 in series and distributing cavitation units 502 in a specific manner, the cavitation effect can be continuously induced and acted upon in the pipeline, forming a stable anti-scaling and mild descaling effect, effectively solving the problem of pipeline scaling and blockage caused by the high hardness of mine drainage water.

[0054] Through the above steps, this utility model uses sedimentation tank 2 to settle the water input from the external water supply equipment, initially removing larger impurities or particles from the liquid. The liquid from the upper section of sedimentation tank 2 is then introduced into filter 3 via a high-pressure pipeline by starting flow pump 1. When the water flows through the throat section 5012 of the multi-stage Venturi tube 501 in the high-pressure pipeline, the flow velocity increases dramatically, and the pressure drops sharply, falling below the saturated vapor pressure of water. At this time, dissolved gases in the water precipitate to form microbubbles, and the water itself may also vaporize to form steam microbubbles. When the water flow impacts the cavitation unit 502 array at the beginning of the downstream expansion section 5013, a strong, localized low-pressure vortex region is generated behind the cavitation unit 502 array, further inducing and strengthening transient cavitation phenomena. These microbubbles rapidly enter the downstream pressure... The recovery zone, i.e., the expansion section of pipe 5013, experiences instantaneous cavitation collapse under high pressure. This collapse process is accompanied by localized high-temperature and high-pressure points, high-speed microjets, and shock waves. The high-speed microjets target the solid wall of the Venturi tube structure. The microjets, shock wave disturbances, and extreme localized high-temperature and high-pressure conditions generated by cavitation collapse effectively interfere with and disrupt the formation and orderly growth of microcrystal nuclei such as calcium carbonate and calcium sulfate in the water, making it difficult for them to stably adhere to the pipe wall and form hard scale. At the same time, the microjets and shock waves act directly on the pipe wall, effectively stripping away the soft scale that has formed initially and is not yet fully hardened, allowing it to be discharged with the water flow and preventing further solidification and accumulation. In addition, the continuous flow of water causes cavitation to be continuously induced and collapsed at specific locations, forming a continuous anti-scaling and mild descaling mechanism, thereby effectively solving the problem of pipe scaling and blockage caused by the high hardness of mine drainage water.

[0055] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An integrated treatment device for mine dewatering water, comprising a flow pump (1) for the pressurized delivery of mine dewatering water, a sedimentation tank (2) for the sedimentation of water, and a filter (3) for the filtration of water, characterized in that: The sedimentation tank (2) is connected to the upstream of the flow pump (1), and the filter (3) is connected to the downstream of the flow pump (1); the device further comprises: A high-pressure conveying pipeline (4) is used to connect the input end of the flow pump (1) and the outlet end of the sedimentation tank (2), and connect the output end of the flow pump (1) and the inlet end of the filter (3); An anti-fouling spoiler section (5) is a modular pipe section structure, which is connected in series in the high-pressure conveying pipeline (4); The specific structure of the anti-fouling spoiler section (5) comprises: A multi-stage Venturi tube (501) is composed of alternating contraction section pipelines (5011), throat section pipelines (5012) and expansion section pipelines (5013), and is used to generate a low-pressure area in the throat section pipeline (5012); An array of cavitation units (502) is distributed on the inner wall of the expansion section pipeline (5013) at the start position of the expansion section, and is used to generate transient cavitation nuclei in the low-pressure area.

2. The integrated treatment device for mine dewatering water according to claim 1, characterized in that: The cavitation unit (502) is a truncated conical platform structure, the area ratio of the connecting surface between the cavitation unit (502) and the inner wall of the expansion section pipeline (5013) and the top plane of the cavitation unit (502) is between 0.25 and 0.4, and the inclination angle of the conical platform side wall of the cavitation unit (502) is between 30° and 45°.

3. The integrated treatment device for mine dewatering water according to claim 1, characterized in that: The multi-stage Venturi tube (501) comprises at least two groups of Venturi tubes, and is composed of a plurality of groups of Venturi tubes in the same coaxial direction, the contraction section pipeline (5011) of the Venturi tube at the start section is connected to the high-pressure conveying pipeline (4) through a flange, and the expansion section pipeline (5013) of the Venturi tube at the end is connected to the high-pressure conveying pipeline (4) through a flange.

4. The integrated treatment device for mine dewatering water according to claim 1, characterized in that: The distribution mode of the cavitation unit (502) is circumferential asymmetric distribution and / or axial gradient distribution, wherein: The circumferential asymmetric distribution specifically comprises: at least six groups of conical platform clusters are arranged on the pipe cross section circumference of the expansion section pipeline (5013), and the center angles of adjacent conical platform clusters are offset by 20°-30°; The axial gradient distribution specifically comprises: being concentrated in the front 1 / 3 region of the expansion section, and arranging at least two rows of conical platform arrays along the water flow direction, and the circumferential positions of each row of conical platforms are staggered by 5°-10° from the front row.

5. An integrated treatment device for mine dewatering water according to any one of claims 1 to 4, characterized in that: The installation position of the anti-fouling spoiler section (5) at least meets at least one of the following: Located on the high-pressure conveying pipeline at the output end of the flow pump (1); Provided on the straight pipe section at both ends of a pipeline bend with an angle greater than 45°.

6. The integrated treatment device for mine dewatering water according to claim 1, characterized in that: The material of the anti-fouling spoiler section (5) is a wear-resistant and cavitation-resistant material, including 316L stainless steel or 17-4PH precipitation hardened stainless steel with a carbonized coating on the surface.

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