47 results about "Settling" patented technology

The utility model relates to the technical field of settling ponds, in particular to a settling pond for industrial sewage heavy metal treatment, which comprises a settling pond, two guide rods are arranged in an inner cavity of the settling pond, a sliding plate is slidably sleeved outside the two guide rods, a stirring component is arranged on the sliding plate, supports are arranged on two sides of the outer wall of the settling pond, and the two sides of the outer wall of the settling pond are respectively provided with a stirring component. Traction assemblies are arranged in inner cavities of the two supports, fixing plates are arranged on the left side and the right side of the top end of the sliding plate correspondingly, the two traction assemblies are fixedly connected with the two fixing plates correspondingly, wheels are arranged at the four corners of the bottom end of the sedimentation tank correspondingly, and a plurality of connecting plates are arranged on the outer wall of the sedimentation tank. The sedimentation tank for industrial sewage heavy metal treatment solves the problems that a heavy metal sedimentation tank in the prior art is not provided with stirring equipment in the actual use process, sulfide and sewage added into the sedimentation tank cannot be mixed and stirred in the actual use process, and the heavy metal sedimentation time is long.

The invention relates to an aeration tank sludge sedimentation ratio prediction method and device based on autoregression decoding. The method comprises the following steps: arranging a sludge sedimentation observation container communicated with an aeration tank; introducing the mixed liquid of the aeration tank into an observation container, and capturing an image frame sequence of the mixed liquid in the observation container from a standing starting stage to a free settling stage; cleaning an observation container and discharging waste liquid, inputting an acquired image frame sequence into a sludge sedimentation ratio prediction model based on ResNet and autoregressive Transformer at the same time to obtain a predicted 30-minute sedimentation dynamic curve, and introducing a causal mask multi-head attention mechanism during prediction; and the prediction process is repeated after the aeration tank mixed liquid is introduced again. According to the method, the 30-minute SV value can be accurately predicted by capturing the short-time dynamic rule at the initial stage of sludge sedimentation, so that the response speed and accuracy of SV value monitoring are improved, and a support is provided for rapid and accurate regulation and control of a sewage treatment process.

This invention relates to the field of concentration devices, specifically to a high-efficiency, non-powered concentration device, comprising: a device body and an artificial platform fixedly installed on the top of the device body; and a water inlet fixedly located in the middle of the artificial platform, the lower end of which penetrates the artificial platform and extends into the interior of the device body. This invention, by setting a flow-stabilizing section (preferably a fan-shaped honeycomb filter) arranged circumferentially along the inner wall of the device body, enables the core solid-liquid separation process of this device to be achieved entirely through gravity settling and structural rectification. On the one hand, this creates a relatively static and stable hydraulic environment for the settling of solid particles, significantly reducing the interference of turbulence and short-circuiting on the settling process, thereby greatly improving the solid-liquid separation efficiency, especially the ability to capture fine particles. This results in low turbidity and clear water in the overflow supernatant, which can be directly reused in the production process, achieving efficient recycling of water resources. On the other hand, the overall energy consumption is extremely low, and the operating cost is significantly reduced.

The present disclosure relates to a downhole multi-stage spiral nested oil-water fine separation device; the device comprises a spiral settling module and a fine separation module; the spiral settling module utilizes a spiral flow channel to separate oil-water two-phase by cyclone layering, to make the central oil phase enter the upper oil pipe coupling from the oil phase outlet, and part of the water phase enters the coalescence plate below the settling separation area; the fine separation module performs secondary fine separation on the liquid phase containing a small amount of oil phase after separation by the spiral settling module, the separated oil phase is combined with the settled oil phase through the overflow pipe, and the separated water phase is discharged into the lower oil pipe coupling through the water phase outlet on the inverted cone. In the embodiment of the present disclosure, the coalescence unit comprising a plurality of coalescence plates is located inside the primary separation area, realizing the combination of cyclone, settling and coalescence in a small space, and the structure is simple and the energy loss is small, which is suitable for completing multi-stage fine separation of oil-water two-phase in the wellbore.

The present application relates to the technical field of coal slime dewatering, and discloses a stepless overflow liquid level adjusting device for a horizontal settling centrifuge, which comprises an end cover, a plurality of overflow ports on the end cover, a weir plate, an impeller disc and an adjusting gear, the weir plate has a plurality of weir plates corresponding to the number of the overflow ports, the weir plates are slidably arranged on the end cover and used for controlling the opening degree of the overflow ports, the weir plate bottom is provided with engaging teeth, a vortex sliding groove is formed on one side of the surface of the impeller disc, the vortex sliding groove is matched with the engaging teeth, the circumferential surface of the impeller disc is provided with gear teeth, and the adjusting gear is rotatably arranged on the end cover and matched with the gear teeth. Through the above technical scheme, the problems of complicated operation and low precision in adjusting the overflow liquid level height in the prior art are solved.

The utility model discloses a device for improving the efficiency of a horizontal flow precipitation separation process based on turbulent laminar flow and shallow pool precipitation, which relates to the technical field of water purification treatment and comprises a bottom fixing support fixedly connected to the bottom of an inverted V-shaped folded plate, and a side fixing support fixedly connected to the side of the inverted V-shaped folded plate. According to the device for improving the efficiency of the horizontal flow precipitation separation process based on turbulent laminar flow and shallow pool precipitation, n layers of inverted V-shaped folded plates are arranged in the horizontal flow pool in the water depth direction, so that the pool depth forms n + 1 layers, a multi-layer parallel horizontal flow precipitation pool is formed, according to the shallow pool precipitation theory, the precipitation efficiency can be improved to n + 1 times compared with that of a conventional horizontal flow pool, and the efficiency of the horizontal flow precipitation separation process is improved. One or more layers of inverted V-shaped folded plates are mounted close to the bottom of the pond, so that the hydraulic flow state of the bottom of the pond is changed, the hydraulic turbulence at the bottom is reduced, the Reynolds number is reduced, and the water flow at the bottom tends to laminar flow, thereby inhibiting the bottom mud from floating due to turbulence. The stability of the precipitation effect is ensured. And secondary muddy water return of the precipitated water is avoided.

This utility model relates to the field of sedimentation device technology and discloses a self-cleaning sedimentation device, including two base plates. Three rows of connecting plates are arranged inside the two base plates on the side close to each other. Multiple inclined plates are fixedly connected to the side of each group of three connecting plates that are close to each other. The side of each group of two connecting plates that are far from each other is fixedly connected to the side of each group of two base plates that are close to each other. By setting three rows of connecting plates between the two base plates and fixing multiple inclined plates between each group of three connecting plates, and fixing multiple equidistant guide plates on the two inclined surfaces of the outer surface of the inclined plates, the particle settling distance can be shortened from several meters to several centimeters, which greatly increases the sedimentation area, reduces turbulence interference, guides the particle sliding path, increases the probability of particle collision, enhances the contact flocculation effect, promotes the formation of larger flocs and dynamic sludge layers, achieves efficient solid-liquid separation, and avoids the problems of low efficiency caused by long settling paths and water turbulence in traditional devices.

The invention relates to the technical field of coal slime water treatment, in particular to a method for measuring coal slime flocculation and settling velocity based on FBRM and PVM. The measuring method comprises the steps that coal slime water is placed in the sedimentation pipe, the observation hole is formed in the sedimentation pipe, the FBRM online particle instrument monitors the particle size and number distribution of coal slime particles at the height corresponding to the observation hole in the sedimentation process in real time through the observation hole, the sedimentation speed is calculated, and the particle video microscope PVM records a coal slime floc image through the observation hole. According to the method, the floccule form and the settling velocity in the coal slime water can be accurately measured in real time, errors and manual operation errors caused by off-line microscope analysis are avoided, the measurement precision is improved, and real-time synchronous association between the size change of the coal slime floccules and the settling velocity is achieved.

The invention relates to the technical field of coal flotation, and particularly discloses a flotation tailing treatment method for strengthening middling coal sedimentation and rapid separation. According to the method, aiming at the problems of large fine coal ash fluctuation and low middling coal recovery rate caused by middling coal entrainment in the existing flotation process, a roughing-scavenging-concentration three-section separation process is coupled with a middling coal reflux concentration technology. Tailings generated by three-section flotation are specially treated, and sedimentation and aggregation of middling coal particles are strengthened by adding a flocculating agent into the tailings and introducing a middling coal separation hopper with an optimized structure; by improving the underflow discharging mode of the separation hopper, high-concentration medium coal slurry is rapidly discharged, and overflow returns to the scavenging section to recover residual clean coal. According to the method, stable control over the clean coal product quality and synchronous increase of the middling coal recovery rate are achieved, the technical bottleneck of a traditional mixing separation process is solved, and economic benefits are remarkable.

The invention belongs to the technical field of iron separation production, and particularly relates to an online mud layer interface measurement algorithm which comprises the following steps: S1, calculating layered reference conductivity including clear liquid layer reference conductivity, settling layer reference conductivity and mud layer reference conductivity; s2, judging whether a difference value between the reference conductivity of the clear liquid layer and the reference conductivity of the settling layer is greater than 2 or not so as to judge whether a mud layer and the settling layer exist in the settling tank or not, and calculating the position of the mud layer; s3, after the mud layer is calculated through the conductivity, the mud layer is calculated through pressure in an auxiliary mode, and the auxiliary measurement logic is as follows: when the first buoyancy becomes large, it is judged that clear liquid is entered; if the buoyancy increases for the second time and continuously increases, it is judged that the water enters the settling layer; after the buoyancy change is stable for the second time, entering the mud layer is judged. The invention can solve the problems that the conductivity basic value is small, the change fluctuation of different working conditions is large, and the boundary layer cannot be distinguished through the simple absolute value of the conductivity and the increase and decrease of the conductivity when the conductivity is measured by an online mud layer interface measuring device.

The utility model relates to the technical field of sedimentation tanks, and discloses a sedimentation tank with an efficient solid-liquid separation function, which comprises a sedimentation tank, and a water distribution component and a cleaning component are connected in the sedimentation tank; the water inlet distribution assembly comprises a flow stabilizing plate, a mounting groove is formed in one side of the settling box, the flow stabilizing plate slides in the mounting groove, and multiple groups of flow guide holes penetrate through the flow stabilizing plate; compared with the prior art, the sedimentation tank has the advantages that water flow can be uniformly distributed into the sedimentation tank, the impact of the water flow on a sedimentation area is reduced, a stable hydraulic condition is created for solid-liquid separation, and the separation stability of the sedimentation tank with the efficient solid-liquid separation function is improved; sludge deposited at the bottom of the settling tank can be removed in time, it is avoided that sludge accumulation occupies the effective volume, it is avoided that a solid-liquid separation path is blocked due to the fact that a sludge layer is too thick, and the separation efficiency of the settling pond with the efficient solid-liquid separation function is improved.

An air inlet (2) is tangentially formed in one side of the outer wall of the top of a spiral air inlet pipe (1), and the bottom of the spiral air inlet pipe (1) is connected with a cone (3); the bottom of the cone (3) is connected with an ash hopper (4), an air outlet (5) is formed in the middle of the upper end of the spiral air inlet pipe (1), an overflow cylinder (7) is communicated with the inner top of the spiral air inlet pipe (1), namely the lower side of the air outlet (5), and the lower end of the overflow cylinder (7) is communicated with an upturning cylinder (9) through an inner cylinder (8); a rotational flow cover (11) is arranged on the lower portion in the cone (3), namely the lower side of the lower port of the upturning cylinder (9), a synchronous impeller (13) is arranged in the lower port of the upturning cylinder (9), and the rotational flow cover (11) and the synchronous impeller (13) are coaxially connected through a connecting shaft rod (12). Solid particles in air flow are separated on line step by step through the outer rotational flow annular settling space and the inner rotational flow pressure reduction ascending space, backmixing is greatly restrained, rotational flow multi-link continuous separation is achieved, and ash deposition is prevented.

The invention discloses a device and a method for evaluating the separation effect of calcium sulfate in activated sludge, and relates to the field of mineral processing. The device comprises a feeding unit, a separation unit and a data acquisition and control unit. The method comprises the following steps: characterizing the property of the activated sludge; centrifugally settling the activated sludge under different flows, collecting settled sand in a container, drying, weighing, calculating the yield, and detecting the content of calcium sulfate at each stage; determining the most appropriate centrifugal acceleration according to the maximum difference between the calcium sulfate retention rate and the sludge content; and establishing a model according to the centrifugal acceleration, the operation parameters and the structure parameters of the cyclone and the corresponding particle size at the axial speed zero-speed enveloping surface, defining that the corresponding particle size at the position greater than the radius of the axial speed zero-speed enveloping surface enters the underflow, and predicting the underflow yield of the industrial cyclone in separating the calcium sulfate in the sludge under the centrifugal acceleration. According to the invention, the quick separation of the activated sludge and calcium sulfate mixture and the pre-guidance and optimization of the industrial cyclone are realized.

The utility model relates to a multi-channel liquid treatment device, which aims to solve the technical problems that sediments in a sediment box need to be scraped one by one and the operation is troublesome at present, and comprises the sediment box, a plurality of liquid pump bodies are arranged on the periphery of the sediment box, the liquid pump bodies are connected with the sediment box through pipelines, and the liquid pump bodies are connected with the sediment box through pipelines. The device further comprises a track and a scraping structure. The two rails are symmetrically and fixedly arranged on the two sides of the inner bottom wall of the settling box; the scraping structure is arranged between the two rails; the scraping structure comprises a transverse plate, a sliding block and a scraping strip; the two sliding blocks are fixedly arranged at the two ends of the bottom side of the transverse plate correspondingly. The sliding block is in sliding fit with a sliding groove formed in the rail. The scraping strip is arranged below the transverse plate; wherein the scraping strip is in contact fit with the inner bottom wall of the sedimentation tank, and the sedimentation tank has the advantages that sediments are integrally scraped along the inner bottom wall of the sedimentation tank, and the sedimentation tank is more efficient and convenient.

The utility model relates to the technical field of water treatment simulation, in particular to an adjustable multifunctional pilot test water treatment simulation device which comprises a settling tank and a mixing tank, an overflow port connected with the mixing tank is formed in one side of the top end of the settling tank, and a water outlet is formed in the side, away from the overflow port, of the top end of the settling tank. A water inlet pipe is arranged on one side of the mixing box, a metering pump used for accurately adding chemicals is arranged at the top end of the mixing box, two symmetrical sliding positioning pieces are installed on the inner side of the top end of the settling box, a plurality of baffles arranged at intervals are installed on the sliding positioning pieces, and a transparent side window is arranged on one side of the bottom end of the settling box. According to the utility model, the baffles with different numbers and intervals are arranged in the sediment box, and the baffles on the two sliding positioning pieces can form a continuous water flow movement channel, so that a tester can observe and record the sediment distribution condition from the outer surface of the side window.

The invention relates to the technical field of crude oil dehydration methods and devices, in particular to a divergent coalescence double-rectifying-plate efficient dehydration device and method.Crude oil flows rightwards in a coalescence area in an S shape, namely S-shaped divergent flow channels are formed among coalescence balls distributed at intervals in a matrix mode in the fluid flowing direction, and when the crude oil flows through the S-shaped divergent flow channels, the crude oil flows through the S-shaped divergent flow channels under the action of buoyancy, and the crude oil is separated from the coalescence balls. Large oil drops formed by collision gradually float to the top of the coalescence area and then enter the settling area for settling separation. According to the divergent coalescence double-rectifying-plate efficient dehydration device, the S-shaped divergent flow channel is designed, large oil drops formed by collision can gradually float upwards to the top of a coalescence area under the action of buoyancy, fluid flow is not limited in a fixed flow channel space formed by different layers of corrugated plates any more, and therefore the collision probability of the oil drops is greatly increased, and meanwhile, the oil drops are prevented from falling off. Double rectifying plates are designed, the effect of rectifying, energy dissipation and vortex reduction is utilized, disordered flow in a settlement area is eliminated to the maximum extent, and separation and settlement time is shortened.

The utility model relates to the technical field of medical biology, and provides a flushing fluid purifying and stirring device which comprises a stirring tank, the outer surface of the stirring tank is fixedly connected with a supporting plate, the top end of the supporting plate is fixedly connected with a sediment box, the outer surface of the sediment box is fixedly connected with a water suction pump, a groove is formed in the bottom of the inner wall of the sediment box, and the bottom of the inner wall of the sediment box is fixedly connected with a water pump. The bottom of the outer surface of the groove is fixedly connected with two waste material pipes, and one-way valves are arranged in the two waste material pipes. When the device is used, flushing fluid is poured into the settling tank for settling, and after settling is carried out for a certain time, sediment can be settled at the bottom of the settling tank; then an electric push rod is started through an external power supply, the electric push rod pushes a cleaning plate to move at the bottom of the settling box, at the moment, sediments can be pushed into a groove, and after the sediments in the settling box are pumped out, a one-way valve can be rotated, so that the sediments are discharged from a waste material pipe.

The invention belongs to the technical field of oilfield water treatment, and particularly relates to a coagulating sedimentation device and method for oilfield produced water. The coagulating sedimentation device comprises a sedimentation box, a filter box and a dosing device are mounted at the top of the sedimentation box and are both communicated with the sedimentation box, a cutting pump is mounted at the top of the filter box, and an outlet of the cutting pump is communicated with the filter box. The oilfield produced water can be cut through the cutting pump, blockage of follow-up equipment due to too large impurities is avoided, water flow can be preliminarily filtered through the first filter plate, and the filtering effect of the oilfield produced water is improved. The dosing device can control the capacity of the adjusting box, and the usage amount of the flocculant is controlled according to the water flow capacity in the settling box. By arranging the lifting air cylinder, the height of the oilfield produced water drainage pipe can be adjusted, and a guarantee is provided for the precipitation filtering effect of oilfield produced water; precipitated impurities of oilfield produced water can be discharged out of the settling box through the dirt collecting groove and the auger mechanism, cleaning is convenient, and labor is saved.

The utility model discloses a stacked type sedimentation tank. The stacked type sedimentation tank comprises a sedimentation hopper main body, a plurality of groups of stacking modules are mounted at the top of the sedimentation hopper main body in a stacking manner, each stacking module comprises a tank body arranged at the top of the sedimentation hopper main body, a plurality of groups of inclined plates are mounted on two sides in the tank body, and split connecting flanges are arranged at the upper end and the lower end of the tank body; according to the utility model, the plurality of groups of stacking modules are mounted at the top of the sedimentation hopper main body in a stacking manner, so that the vertical space can be fully utilized, and due to the multi-layer accumulation design, the sedimentation area and the treatment space of the sedimentation tank are obviously increased under the condition that the occupied area of the sedimentation tank is not changed; the settling pond can contain more sewage and perform solid-liquid separation at the same time, so that the treatment capacity is greatly improved, the problem that the occupied area is too large when a traditional settling pond is used for treating large-flow sewage is effectively solved, the manufacturing and transportation cost can be reduced through the modular design, and then use by personnel is facilitated.

This invention relates to the field of water conservancy engineering technology and discloses a sedimentation facility, comprising a waterway, an inlet waterway, a first opening and closing structure, an overflow pool, a sedimentation pool, an outlet waterway, and a second opening and closing structure. The waterway is located at the upper end of the overflow pool. The first opening and closing structure is located on the left side of the overflow pool, and the second opening and closing structure is located on the right side. The sedimentation pool is located on the side of the overflow pool furthest from the waterway. In sedimentation mode, the first opening and closing structure is open, and the second opening and closing structure is closed. In dredging mode, both the first and second opening and closing structures are open. This invention can intercept and filter sediment in a comprehensive and targeted manner, and can achieve complete backwashing, ensuring its long-term effective and stable operation.

This utility model relates to the field of bauxite washing technology, specifically to a bauxite slurry settling tank with a homogenizing tank, comprising a tank body and a flow guiding and regulating mechanism. The tank body is inclined to a horizontal plane, with an inlet at one end and an outlet at the other. The upper end of the tank body is open. The flow guiding and regulating mechanism has guide plates on both sides of the tank body, staggered along the length of the tank body. The end of the guide plate closest to the tank body is rotatably connected to the tank body. The inclined tank body combined with the upper opening effectively improves the aeration efficiency of the slurry, accelerates the bubble dissipation process, and significantly reduces the risk of foam layer formation on the liquid surface after the slurry enters the settling tank. The staggered distribution of the guide plates forces the slurry to form a sinusoidal flow path, reducing the slurry flow velocity. The impact of the slurry on the guide plates enhances the homogenizing effect, making the slurry distribution more uniform and creating favorable conditions for subsequent settling.

A solids trap module for an electrical submersible pump (ESP) of a wellbore is provided. The module includes a solids buffer and a fluid passage, the fluid passage having a first segment configured to redirect a fluid in a first angular direction relative to an axial axis, and a second segment configured to redirect at least a portion of the redirected fluid flow in a second angular direction different than the first angular direction. The first segment, the second segment, and the solids buffer are configured to cooperate to cause settling of solids entrained by the fluid flowing through the solids trap module during a period when the ESP does not operate and to re-entrain settled solids into the fluid flowing through the solids trap module when the ESP is operating.

The invention belongs to the technical field of underground lifting equipment of oil and gas fields, coal-bed gas wells or geothermal wells and the like, and particularly relates to a multi-stage cooperative type underground gas-liquid-sand efficient separation system for a horizontal well. The device sequentially comprises an upper connector, a horizontal well self-adaptive gas-liquid separation unit, an exhaust valve set, a gravity gas-liquid-sand settling unit, a vortex gas-liquid-sand separator, a primary sand filtering unit and a guide head from top to bottom in the axial direction of a tubular column. The horizontal well self-adaptive gas-liquid separation unit is connected with a rigid suction pipe which can be self-adaptive to the bottom of a tubular column through a hose; the vortex gas-liquid-sand separator is provided with an inner pipe driven by fluid to rotate, and fine sand is separated through centrifugal force. And the exhaust valve group is provided with a sand prevention step and a multi-directional exhaust valve. Through the multi-stage synergistic effect, the problem that the downhole pump is damaged by the fluid with high gas content and high fine silt content of the horizontal well is effectively solved, the separation efficiency and the system reliability are remarkably improved, the pump inspection period is prolonged, and the production cost is reduced.

The utility model discloses a continuous type sedimentation tank for starch processing, which comprises a sedimentation tank body, the sedimentation tank body comprises an outer tank and an inner tank, the inner tank is inserted into the outer tank, the bottom end of the inner tank is fixedly connected with the telescopic end part of an air cylinder, the air cylinder is fixedly arranged at the bottom end of the outer tank, the outer tank is connected with a vertical column in a sliding manner, and the vertical column is fixedly connected with the outer tank. The stand column is fixedly arranged at the bottom end of the inner tank, a spring is arranged between the outer tank and the inner tank, the spring is connected to the outer side of the stand column in a sleeving mode, and a top plate is fixedly installed at the top end of the outer tank. After starch milk enters the inner tank from the first inlet and is precipitated in the inner tank, clear water can be injected into the inner tank through the second inlet, at the moment, under the starting of the servo motor and the air cylinder, the inner tank can be located in the outer tank to ascend and descend up and down, and the rotating shaft drives the fixing rod to rotate; the starch cleaning device is simple in structure and operation, and the work progress efficiency is effectively improved.

The utility model discloses an automatic liquid discharging separator based on gravity settling, which comprises a separating tank, a feeding pipe communicated with the lower part of one side of the separating tank, a check valve communicated with the input end of the feeding pipe, a material guiding groove communicated with the bottom of the other side of the separating tank, a valve communicated with the bottom of the material guiding groove, a discharging pipe communicated with the output end of the valve, and a discharging pipe communicated with the discharging pipe. A scraping component for scraping impurities attached to the surface of the tank wall is arranged in the inner cavity of the separation tank, and a material scraping component for scraping the surface of the tank wall and scraping the impurities attached to the bottom of the inner cavity into the material guide groove is arranged at the bottom of the inner cavity of the separation tank. The liquid level in the separation tank descends, the disc descends along with the liquid level, and in the descending process, the rubber ring arranged on the outer surface of the disc in a sleeving mode scrapes impurities attached to the tank wall, so that the inner wall of the separation tank is cleaned, discharging is more thorough, and the situation that next-time use is affected is avoided.

This application provides a method for backfilling and grouting construction in casing drilling, the steps of which include: simultaneously inserting a casing during drilling, removing the drill bit after drilling to the designed hole depth, and leaving the casing inside the hole; setting up a grouting pipeline to the designed elevation of the bottom of the hole; preparing a cement-based composite grout; continuously injecting grout into the bottom of the hole to maintain a stable rise in the grout level; when the injected grout volume reaches a preset value, intermittently pulling out the casing, pausing the pulling out after each preset stroke and maintaining continuous grouting until the bottom end of the casing is completely pulled out of the grout surface in the hole; treating the hole opening with grout and monitoring the grout level settling; injecting a high-concentration composite grout when the settling reaches a threshold; and sealing the hole with quick-drying polymer mortar after the grout has finally set. The grouting construction method for backfilling holes provided in this application aims to solve the problem of insufficient compaction of the grouting body in the existing technology, so as to effectively remove water, sediment and gas in the hole, maintain the uniformity of the grout, and ensure that the cavity is densely filled with grout when the casing is pulled out, forming a continuous, uniform and dense grouting body.

This application relates to the field of underwater environmental protection, and in particular to a method for underwater blasting environmental protection. It includes sequentially deploying a bubble curtain and an antifouling curtain around a predetermined blasting zone; placing a package containing a water treatment flocculant within the blasting zone or in the water immediately above it; linking the release trigger condition to the blasting operation; and implementing underwater blasting to trigger the release of the flocculant, allowing it to mix with suspended sediment. The bubble curtain weakens the shock wave and, in conjunction with the antifouling curtain, hinders sediment diffusion, while the flocculant promotes the settling of suspended solids. The application also describes the flocculant composition, packaging material and placement method, the formation and fixing method of the bubble curtain and antifouling curtain, their placement distance, and the steps of monitoring water turbidity and replenishing flocculant. This application achieves the technical effects of weakening underwater shock waves, hindering the diffusion of suspended sediment, accelerating the settling of fine suspended solids, and realizing rapid water purification after blasting.

The utility model relates to a cutting fluid circulating centralized water supply filtering system which comprises a box body, the inner space of the box body is divided into a collecting tank, a primary settling tank, a settling tank and a water supply tank which are mutually independent by a plurality of vertically arranged partition plates, and the collecting tank, the primary settling tank, the settling tank and the water supply tank are sequentially distributed adjacently; a first drainage opening is formed in the partition plate between the collecting tank and the primary sedimentation tank, a second drainage opening is formed in the partition plate between the primary sedimentation tank and the sedimentation tank, a third drainage opening is formed in the partition plate between the sedimentation tank and the water supply tank, and the heights of the first drainage opening, the second drainage opening and the third drainage opening are sequentially reduced; a water return port communicated with the collecting pool is formed in the upper part of the box body. The cutting fluid filtering device has the beneficial effects that the structure is simple, the internal structure of the box body is reasonably arranged, and effective filtering of cutting fluid can be realized; in addition, the filter press is used for realizing filter pressing of sludge in each tank body, solid-liquid separation is realized, the separation effect is better, and water resources are saved.

This application provides a soil suspension mixing device, including a base, multiple settling cylinders, a synchronous drive component, and a loading plate. A mounting plate with multiple through holes is fixedly mounted on the upper side of the base. The multiple settling cylinders are inserted one-to-one into the multiple through holes, and each settling cylinder has a suspension portion at its upper end. The synchronous drive component is located on the lower side of the mounting plate and is used for transmission connection with the multiple settling cylinders to drive them to rotate synchronously. The loading plate is fixedly mounted on the upper side of the mounting plate, and its lower side has multiple insertion rods suitable for inserting one-to-one into the multiple settling cylinders. Each insertion rod is fixedly connected to a spiral blade extending spirally along its axial direction. In actual use, the spiral blades and the rotating settling cylinders cooperate to form an axial circulating flow within the soil suspension. The soil suspension mixing device provided by this application can simultaneously mix multiple sets of soil suspensions, improving the efficiency and accuracy of soil particle analysis results.

The invention discloses a plasma reinforced coal slime sedimentation system and a plasma reinforced coal slime sedimentation method, and relates to the technical field of coal washing. The plasma reinforced coal slime sedimentation system comprises a first sedimentation module, a second sedimentation module and a third sedimentation module, the first sedimentation module is configured for carrying out first sedimentation on coal slime water, and the first sedimentation module comprises a first overflow port and a first underflow port; the second sedimentation module is connected with the first overflow port, the second sedimentation module is configured to carry out secondary sedimentation on the slime water, and the second sedimentation module comprises a second overflow port and a second underflow port; the thickener comprises a third overflow port and a third underflow port, the first underflow port is connected with the inlet of the thickener, the third underflow port and the second underflow port are connected to the filter press feeding barrel, and the second overflow port and the third overflow port are connected to the circulating water collecting position. Through centrifugal sedimentation of the first sedimentation module and the second sedimentation module and gravity sedimentation of the thickener, the sedimentation efficiency of the slime water is improved.