Drainage device for mining sandstone treatment

Abstract

The invention relates to the technical field of drainage devices, in particular to a drainage device for mining sandstone treatment, which comprises a wastewater treatment rotary drum for sandstone wastewater treatment and a centrifugal impurity removal mechanism arranged in an inner cavity of the wastewater treatment rotary drum, and further comprises a floating plate mechanism arranged on the surface of the wastewater treatment rotary drum, the floating plate mechanism comprises a T-shaped floating plate; the centrifugal impurity removal mechanism is combined with the floating plate mechanism, the first stirring frame and the second stirring frame to rotate, centrifugal force is applied to wastewater, and scum is promoted to quickly move to the edge of the wall body of the wastewater treatment rotary drum and is discharged. And the unique scum discharge port can be automatically adjusted according to the water storage height in the rotary drum, so that the scum height change caused by different water storage heights or centrifugal force can be easily coped with. Compared with a traditional suspended matter flocculation and precipitation method, the method does not need a long standing precipitation process, greatly shortens the solid-liquid separation time, and remarkably improves the separation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage devices, and particularly to a drainage device for mining sand and gravel treatment. Background Art

[0002] In mining production, sand and gravel treatment is a key link. During a series of processing processes such as sand and gravel mining, screening, and washing, a large amount of wastewater is generated. This wastewater contains a large amount of solid particle impurities such as sediment and stone powder, and may also include the situation where the pH of the wastewater exceeds the standard due to the characteristics of the ore. If directly discharged without effective treatment, it will cause serious pollution to the surrounding soil, water bodies and other ecological environments, triggering a series of environmental problems such as soil compaction and water quality deterioration, and also violating the requirements of environmental protection regulations. Traditional drainage devices for mining sand and gravel treatment have exposed many problems in practical applications. On the one hand, for a large number of fine solid particles in the wastewater, there is a lack of an efficient solid-liquid separation mechanism. The conventional solid-liquid separation methods of flocculation and precipitation of suspended solids have a long waiting time. The need for a long-time static precipitation step for solid-liquid separation makes the solid-liquid separation process of fine solid particles in the wastewater complex and time-consuming. Moreover, the solid particles accumulated at the bottom of the treatment container after solid-liquid separation cause difficulties in pumping and removal and the problem that the water content of the sediment needs to be further treated urgently. On the other hand, existing drainage devices are difficult to dynamically detect the acidity and alkalinity of the wastewater, which makes the addition amount of acid-base neutralization agents inaccurate and the progress of the acid-base neutralization reaction difficult to master. At the same time, it is very difficult to master the addition time when the pH condition of the wastewater is suitable for the efficient reaction of the flocculant. The method of adding the flocculant after the acid-base neutralization progress is completed has a waiting time for acid-base neutralization, and plus the waiting time for the reaction of the flocculant, which makes the overall efficiency of the environmental protection discharge treatment of the wastewater low. Summary of the Invention

[0003] Aiming at the above-mentioned shortcomings of the prior art, the present invention provides a drainage device for mining sand and gravel treatment, which can effectively solve the problems of low efficiency of solid-liquid separation of impurities in the prior art and low treatment efficiency caused by the sequential progress of acid-base neutralization reaction and flocculation.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: The present invention provides a drainage device for mining sand and gravel treatment, including a wastewater treatment rotating drum for treating sand and gravel wastewater and a centrifugal impurity removal mechanism arranged in the inner cavity of the wastewater treatment rotating drum. It further includes: a floating plate mechanism, the floating plate mechanism is arranged on the surface of the wastewater treatment rotating drum, the floating plate mechanism includes a T-shaped floating plate, one end of the T-shaped floating plate is fixed with a connecting hose, and the lower end of the T-shaped floating plate is fixed with an anti-seepage baffle. The impurity filtering and processing mechanism is arranged on one side of the floating plate mechanism. The impurity filtering and processing mechanism includes a pressure filtering housing. An inclined mesh plate is fixed to the lower port of the pressure filtering housing. A reciprocating pressing plate is slidably connected inside the pressure filtering housing. Waste residue collection components are arranged on both sides of the pressure filtering housing; The feeding mechanism is fixed below the impurity filtering and processing mechanism. A receiving hopper is arranged between the feeding mechanism and the impurity filtering and processing mechanism. A pH detector is embedded inside the receiving hopper. An air inflation cylinder is arranged between the feeding mechanism and the waste residue collection components. A transmission mechanism is arranged between the centrifugal impurity removal mechanism and the impurity filtering and processing mechanism.

[0005] According to an embodiment of the present invention, the centrifugal impurity removal mechanism is arranged inside the wastewater treatment rotating cylinder. The centrifugal impurity removal mechanism includes a hole groove rotating rod, a first stirring frame, and a second stirring frame. The hole groove rotating rod is rotatably connected to the inner cavity of the wastewater treatment rotating cylinder. The first stirring frame and the second stirring frame are both fixed on the surface of the hole groove rotating rod. The second stirring frame is arranged below the first stirring frame.

[0006] According to an embodiment of the present invention, a docking port is opened at the lower end of the hole groove rotating rod. An installation rack is fixed to the upper end of the wastewater treatment rotating cylinder. A driving motor is fixed to the upper end of the installation rack. The output shaft of the driving motor is fixed to the upper end of the hole groove rotating rod. A hollow cavity is arranged inside the second stirring frame. A liquid outlet hole communicating with the hollow cavity is opened on the lower end surface of the second stirring frame.

[0007] According to an embodiment of the present invention, a floating slag discharge port communicating with the connecting hose is opened on the inner wall of the T-shaped floating plate. Sealing sliding strips are fixed on both side surfaces of the T-shaped floating plate. A lifting adjustment opening slidably matched with the T-shaped floating plate is opened on the upper end surface of the wastewater treatment rotating cylinder. An adsorption magnetic block is fixed on the outer surface of the T-shaped floating plate. An electromagnet guide seat for magnetically limiting and adsorbing the adsorption magnetic block is fixed on the outer surface of the wastewater treatment rotating cylinder.

[0008] According to an embodiment of the present invention, a fixed frame is fixed on the outer surface of the wastewater treatment rotating cylinder. One end of the connecting hose is fixed to the fixed frame. The pressure filtering housing is obliquely fixed on one side surface of the fixed frame. The waste residue collection components include two forming extrusion cylinders. The two forming extrusion cylinders are symmetrically fixed on the side surface of the pressure filtering housing at the lower part. A cleaning port is opened inside the forming extrusion cylinder. One port of the forming extrusion cylinder is communicated with the pressure filtering housing. A reciprocating operating rod slidably penetrates through the inside of the forming extrusion cylinder. One end of the reciprocating operating rod is fixed on one side surface of the reciprocating pressing plate. The other port of the forming extrusion cylinder is threadedly connected with a sealing plug. One end of the reciprocating operating rod slidably penetrates through the center of the end surface of the sealing plug.

[0009] According to an embodiment of the present invention, the charging mechanism includes an acid-base neutralization tank. An air inlet tank is fixed to one side of the acid-base neutralization tank. A medicine adding conduit is fixed to one end face of the acid-base neutralization tank. The end of the medicine adding conduit away from the acid-base neutralization tank is provided with a butt joint liquid injection port. A microporous air distribution box is fixed to the inner bottom wall of the wastewater treatment rotating cylinder. A pressurization conduit is fixed between the microporous air distribution box and the air inlet tank. The two inflatable cylinders are fixed to the end faces of the acid-base neutralization tank and the air inlet tank facing away from each other. One end of the piston rod of the inflatable cylinder is fixed to one end of a reciprocating operating rod through a connecting bracket. A second metering hopper is fixed to the surface of the acid-base neutralization tank away from the medicine adding conduit. An air outlet hole communicating with its inner cavity is opened on the upper end face of the microporous air distribution box.

[0010] According to an embodiment of the present invention, the transmission mechanism includes a driving wheel fixed to the hole groove rotating rod. A driven wheel is arranged on one side of the driving wheel. A synchronous belt is arranged between the driving wheel and the driven wheel. An eccentric turntable is fixed to the lower end of the driven wheel. An eccentric shaft is fixed to the lower end face of the eccentric turntable. A hinge seat is arranged on one side of the eccentric shaft. A hinge operating arm is arranged between the eccentric shaft and the hinge seat. A connecting rod is fixed to the lower end of the hinge seat. The lower end of the connecting rod is fixed to the reciprocating operating rod. An articulated groove rotationally matching with the hinge seat and the eccentric shaft is opened on the lower end face of the hinge operating arm.

[0011] According to an embodiment of the present invention, a fixed-point rotating seat is fixed to one side of the installation frame. The rotating shaft at the center of the upper end face of the eccentric turntable is arranged in the fixed-point rotating seat. An assembly seat is fixed to the installation frame. A first metering hopper is embedded and fixed inside the assembly seat. A water inlet with a stop valve is fixed to one side surface of the wastewater treatment rotating cylinder.

[0012] According to an embodiment of the present invention, the material receiving hopper includes a liquid collecting box. The liquid collecting box is fixed to the upper end of the acid-base neutralization tank. A liquid collecting port is opened inside the liquid collecting box. The liquid collecting port is arranged below the pressure filter housing. An electromagnetic stop valve is arranged at the pipeline part of the liquid collecting box.

[0013] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art: 1. The centrifugal impurity removal mechanism is combined with the floating plate mechanism. The first stirring frame and the second stirring frame rotate to apply centrifugal force to the wastewater, prompting the floating scum to quickly move to the edge of the wall of the wastewater treatment rotating cylinder and be discharged. The unique floating scum discharge port can automatically adjust according to the water storage height in the rotating cylinder, calmly coping with the changes in the floating scum height caused by different water storage heights or centrifugal forces. Compared with the traditional suspension flocculation and sedimentation method, there is no need for a long static precipitation process, greatly shortening the solid-liquid separation time and significantly improving the separation efficiency.

[0014] 2. The impurity filtering mechanism and the transmission mechanism complement each other. The inclined mesh plate in the filter press housing first filters the scum. The transmission mechanism drives the reciprocating pressure plate to move back and forth, squeezing the scum to filter out water and pushing it into the forming and extrusion cylinder for automatic compression and forming. This process effectively solves the problems of solid particles accumulating at the bottom of the container, making it difficult to pump and remove, and the high water content of the accumulated matter, reducing the burden for subsequent processing.

[0015] 3. The centrifugal impurity removal, impurity filtering, receiving hopper, pH detector and feeding mechanism work together. The pH detector in the receiving hopper monitors the pH value of the circulating wastewater in real time, accurately controls the dosage of acid-base neutralizing agents based on the detection data, and clearly grasps the reaction progress. Moreover, the detector is in contact with the circulating water from which impurities have been filtered, avoiding the influence of the electrode probe on the pH detection accuracy and service life due to long-term contact with impurities or fixed acid-base detection areas. At the same time, according to the degree of acid-base neutralization of the circulating water, the timing when the flocculant achieves the best effect can be accurately determined. With the first metering hopper for flow control, the dosage of the flocculant is reasonably increased in a suitable acid-base environment, balancing the dosage of the flocculant and the wastewater treatment time, overcoming the disadvantages of long time consumption and low efficiency in the traditional acid-base neutralization and flocculant reaction, and comprehensively improving the efficiency of environmental protection discharge treatment of wastewater.

[0016] 4. When the centrifugal impurity removal mechanism and the feeding mechanism work together, air generates uniform and tiny bubbles through the microporous air distribution box. Suspended particles come into full contact with and adhere to the bubbles, accelerating their upward floating and pushing the flocs generated by the flocculant reaction to quickly float to the water surface, efficiently achieving solid-liquid separation. In addition, the second stirring frame sprays the reagent into the stored wastewater in the wastewater treatment rotating cylinder in a rotating manner, cooperating with the stirring operation of the centrifugal impurity removal mechanism, making the acid-base neutralization in each area of the wastewater more uniform and improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the wastewater treatment rotating cylinder of the present invention; Figure 3 It is a schematic diagram of the T-shaped floating plate structure of the present invention; Figure 4 It is a schematic diagram of the adsorption magnet structure of the present invention; Figure 5 It is a schematic diagram of the filter press housing structure of the present invention; Figure 6 Schematic structural diagram of the forming extrusion barrel of the present invention; Figure 7 Schematic structural diagram of the microporous air distribution box of the present invention; Figure 8 Schematic structural diagram of the liquid outlet hole of the present invention; Figure 9 Schematic structural diagram of the wastewater treatment rotating drum of the present invention; Figure 10 Schematic structural diagram of the transmission mechanism of the present invention; Figure 11 Schematic structural diagram of the hinge groove of the present invention.

[0019] Reference numerals: 1, wastewater treatment rotating drum; 11, water inlet; 2, installation frame; 21, assembly seat; 22, first metering hopper; 23, fixed-point rotating seat; 3, centrifugal impurity removal mechanism; 31, hole groove rotating rod; 32, first stirring frame; 33, second stirring frame; 34, driving motor; 35, docking port; 36, liquid outlet hole; 4, floating plate mechanism; 41, T-shaped floating plate; 42, connecting hose; 43, floating slag discharge port; 44, fixing frame; 45, sealing slide bar; 46, anti-seepage baffle; 47, adsorption magnet; 48, electromagnet guide seat; 49, lifting adjustment port; 5, filter impurity treatment mechanism; 51, pressure filter housing; 52, inclined mesh plate; 53, reciprocating pressing plate; 54, waste residue collection assembly; 55, forming extrusion barrel; 56, reciprocating operating rod; 57, sealing plug; 58, cleaning port; 6, feeding mechanism; 61, acid-base neutralization tank; 62, air inlet tank; 63, medicine adding conduit; 64, pressure increasing conduit; 65, docking injection port; 66, microporous air distribution box; 67, air outlet hole; 68, second metering hopper; 69, air inflation cylinder; 7, receiving hopper; 71, liquid collection box; 72, liquid collection port; 73, electromagnetic cut-off valve; 8, PH detector; 9, transmission mechanism; 91, driving wheel; 92, driven wheel; 93, eccentric turntable; 94, synchronous belt; 95, eccentric shaft; 96, hinge operating arm; 97, hinge seat; 98, connecting rod; 99, hinge groove. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] Example: Refer to Figures 1 to 11 , a drainage device for mining sand and gravel treatment, including a wastewater treatment rotating cylinder 1 for treating sand and gravel wastewater and a centrifugal impurity removal mechanism 3 arranged in the inner cavity of the wastewater treatment rotating cylinder 1, and further including: A floating plate mechanism 4, the floating plate mechanism 4 is arranged on the surface of the wastewater treatment rotating cylinder 1, the floating plate mechanism 4 includes a T-shaped floating plate 41, one end of the T-shaped floating plate 41 is fixed with a communicating hose 42, the lower end of the T-shaped floating plate 41 is fixed with an anti-seepage baffle 46, a floating slag discharge port 43 communicated with the communicating hose 42 is opened on the inner wall of the T-shaped floating plate 41, sealing slide bars 45 are fixed on both side surfaces of the T-shaped floating plate 41, a lifting adjustment opening 49 slidably matched with the T-shaped floating plate 41 is opened on the upper end surface of the wastewater treatment rotating cylinder 1, an adsorption magnet 47 is fixed on the outer surface of the T-shaped floating plate 41, and an electromagnet guide seat 48 for magnetically attracting and limiting the adsorption magnet 47 is fixed on the outer surface of the wastewater treatment rotating cylinder 1. After the electromagnet guide seat 48 is energized, it generates a magnetic force to attract the adsorption magnet 47 on the T-shaped floating plate 41, so that the height of the floating slag discharge port 43 can be limited.

[0023] A filter impurity treatment mechanism 5, the filter impurity treatment mechanism 5 is arranged on one side of the floating plate mechanism 4, the filter impurity treatment mechanism 5 includes a pressure filter housing 51, an inclined mesh plate 52 is fixed at the lower port of the pressure filter housing 51, a reciprocating pressing plate 53 is slidably connected inside the pressure filter housing 51, waste residue collection components 54 are arranged on both sides of the pressure filter housing 51, a fixing frame 44 is fixed on the outer surface of the wastewater treatment rotating cylinder 1, one end of the communicating hose 42 is fixed on the fixing frame 44, the pressure filter housing 51 is obliquely fixed on one side surface of the fixing frame 44, the waste residue collection component 54 includes two forming extrusion cylinders 55, the two forming extrusion cylinders 55 are symmetrically fixed on the side surface of the lower part of the pressure filter housing 51, a cleaning port 58 is opened inside the forming extrusion cylinder 55, one port of the forming extrusion cylinder 55 is communicated with the pressure filter housing 51, a reciprocating operating rod 56 slidably penetrates through the inside of the forming extrusion cylinder 55, one end of the reciprocating operating rod 56 is fixed on one side surface of the reciprocating pressing plate 53, the other port of the forming extrusion cylinder 55 is threadedly connected with a sealing plug 57, and one end of the reciprocating operating rod 56 slidably penetrates through the center of the end surface of the sealing plug 57. The inclined mesh plate 52 is arranged to keep a downward inclination angle, so that the floating slag finally slides down and accumulates at the lower end of the pressure filter housing 51, and the reciprocating pressing plate 53 can push and run reciprocally to squeeze the floating slag into the forming extrusion cylinder 55, so as to achieve the purpose of automatically compressing and forming and collecting the floating slag; The feeding mechanism 6 is fixed below the impurity filtering and treating mechanism 5. A receiving hopper 7 is arranged between the feeding mechanism 6 and the impurity filtering and treating mechanism 5. A pH detector 8 is embedded inside the receiving hopper 7. An air inflator 69 is arranged between the feeding mechanism 6 and the waste residue collection assembly 54. A transmission mechanism 9 is arranged between the centrifugal impurity removal mechanism 3 and the impurity filtering and treating mechanism 5. The feeding mechanism 6 includes an acid-base neutralization tank 61. An air inlet tank 62 is fixed on one side of the acid-base neutralization tank 61. A medicine adding conduit 63 is fixed on one end face of the acid-base neutralization tank 61. A butt joint injection port 65 is opened at one end of the medicine adding conduit 63 far away from the acid-base neutralization tank 61. A microporous air distribution box 66 is fixed on the inner bottom wall of the wastewater treatment rotating cylinder 1. A pressurizing conduit 64 is fixed between the microporous air distribution box 66 and the air inlet tank 62. Two air inflators 69 are fixed on the opposite end faces of the acid-base neutralization tank 61 and the air inlet tank 62. One end of the piston rod of the air inflator 69 is fixed on one end of the reciprocating operating rod 56 through a connecting bracket. A second metering hopper 68 is fixed on the surface of the acid-base neutralization tank 61 far away from the medicine adding conduit 63. Air outlet holes 67 communicating with its inner cavity are opened on the upper end face of the microporous air distribution box 66. Uniform tiny bubbles will be generated when air passes through the tiny air outlet holes 67 on the microporous air distribution box 66.

[0024] The centrifugal impurity removal mechanism 3 is arranged inside the wastewater treatment rotating cylinder 1. The centrifugal impurity removal mechanism 3 includes a hole groove rotating rod 31, a first stirring frame 32 and a second stirring frame 33. The hole groove rotating rod 31 is rotatably connected in the inner cavity of the wastewater treatment rotating cylinder 1. The first stirring frame 32 and the second stirring frame 33 are both fixed on the surface of the hole groove rotating rod 31. The second stirring frame 33 is arranged below the first stirring frame 32. A butt joint port 35 is opened at the lower end of the hole groove rotating rod 31. An installation frame 2 is fixed on the upper end of the wastewater treatment rotating cylinder 1. A driving motor 34 is fixed on the upper end of the installation frame 2. The output shaft of the driving motor 34 is fixed on the upper end of the hole groove rotating rod 31. A hollow cavity is arranged inside the second stirring frame 33. Liquid outlet holes 36 communicating with the hollow cavity are opened on the lower end face of the second stirring frame 33. The first stirring frame 32 and the second stirring frame 33 rotate accordingly to perform a centrifugal action on the stored water in the wastewater treatment rotating cylinder 1. The floating scum is transferred to the edge of the wall body of the wastewater treatment rotating cylinder 1 by centrifugal action along with the water flow. When the floating scum flows through the floating scum discharge port 43, it will enter the pressure filter housing 51 through the connecting hose 42.

[0025] The transmission mechanism 9 includes a driving wheel 91 fixed on the hole groove rotating rod 31. A driven wheel 92 is arranged on one side of the driving wheel 91. A synchronous belt 94 is arranged between the driving wheel 91 and the driven wheel 92. An eccentric turntable 93 is fixed at the lower end of the driven wheel 92. An eccentric shaft 95 is fixed on the lower end surface of the eccentric turntable 93. A hinge seat 97 is arranged on one side of the eccentric shaft 95. A hinge operating arm 96 is arranged between the eccentric shaft 95 and the hinge seat 97. A connecting rod 98 is fixed at the lower end of the hinge seat 97. The lower end of the connecting rod 98 is fixed on the reciprocating operating rod 56. An articulated groove 99 that is rotationally matched with the hinge seat 97 and the eccentric shaft 95 is formed on the lower end surface of the hinge operating arm 96. The eccentric shaft 95 eccentrically arranged below the eccentric turntable 93 moves eccentrically, driving the articulated hinge operating arm 96 and the lower connecting rod 98 to move. The connecting rod 98 is connected to the reciprocating operating rod 56, so as to drive the reciprocating operating rod 56 to reciprocally stretch inside the forming and extruding cylinder 55.

[0026] A fixed-point rotating seat 23 is fixed on one side of the installation frame 2. The rotating shaft at the center of the upper end surface of the eccentric turntable 93 is arranged in the fixed-point rotating seat 23. An assembly seat 21 is fixed on the installation frame 2. A first metering hopper 22 is embedded and fixed inside the assembly seat 21. A water inlet 11 with a stop valve is fixed on the side surface of the wastewater treatment rotating cylinder 1.

[0027] The material receiving hopper 7 includes a liquid collecting box 71. The liquid collecting box 71 is fixed on the upper end of the acid-base neutralization tank 61. A liquid collecting port 72 is formed inside the liquid collecting box 71. The liquid collecting port 72 is arranged below the pressure filter housing 51. An electromagnetic stop valve 73 is arranged at the pipeline part of the liquid collecting box 71. The PH detector 8 can detect the PH value of the wastewater to determine its acidity and alkalinity. The wastewater in the wastewater treatment rotating cylinder 1 and the wastewater in the material receiving hopper 7 are kept in circulation. In this way, the second metering hopper 68 that cooperates with the flow control can slowly add acid-base neutralization agents according to the change of the detected PH value of the circulating wastewater.

[0028] The working principle of the present invention is as follows: Before use, the mining sand treatment wastewater first passes through a filter screen to filter out larger particle impurities. Subsequently, the wastewater enters the treatment chamber of the wastewater treatment rotating cylinder 1 through the water inlet 11 with a stop valve. At this time, a small amount of flocculant is pre-added to the wastewater treatment rotating cylinder 1, so that the fine impurities suspended in the wastewater flocculate into clusters under the action of the flocculant. When the water level in the wastewater treatment rotating cylinder 1 rises, the extension part of the T-shaped floating plate 41 is on the liquid surface due to buoyancy. In this way, the scum discharge port 43 on the surface of the T-shaped floating plate 41 is at a position above the liquid surface. Therefore, the height of the scum discharge port 43 changes with the change of the liquid surface height, so that the scum discharge port 43 can adapt to the discharge of scum during centrifugal treatment at different water storage heights in the wastewater treatment rotating cylinder 1. Before the centrifugal treatment of the stored water in the wastewater treatment rotating cylinder 1, the electromagnet guide seat 48 is energized to generate a magnetic force to adsorb the adsorption magnet block 47 on the T-shaped floating plate 41, so as to limit the height of the scum discharge port 43. During centrifugation, the drive motor 34 drives the hole groove rotating rod 31 to rotate. The first stirring frame 32 and the second stirring frame 33 rotate accordingly and centrifugally act on the stored water in the wastewater treatment rotating cylinder 1. The scum is transferred to the edge of the wall of the wastewater treatment rotating cylinder 1 with the water flow by centrifugal force. When the scum flows through the scum discharge port 43, it will enter the filter press housing 51 through the connecting hose 42, so as to automatically discharge the scum by using centrifugal force during the stirring operation; When the scum falls into the filter press housing 51, the inclined mesh plate 52 inside the filter press housing 51 can filter the residual water of the scum. During the rotation of the hole groove rotating rod 31, the driving wheel 91 sleeved and fixed on the hole groove rotating rod 31 rotates accordingly. Through the transmission of the synchronous belt 94, the driven wheel 92 and the eccentric turntable 93 are driven to rotate at the fixed-point rotating seat 23. The eccentric shaft 95 eccentrically arranged below the eccentric turntable 93 moves eccentrically and drives the articulated operating arm 96 and the lower connecting rod 98 to move. The connecting rod 98 is connected to the reciprocating operating rod 56, so as to drive the reciprocating operating rod 56 to reciprocate and extend inside the forming extrusion cylinder 55. At this time, the reciprocating pressure plate 53 reciprocally slides on the inclined mesh plate 52 and cooperates with the filter press housing 51 to perform extrusion and water filtration operations on the scum, thus reducing the trouble of the high water content of the scum and taking away too much wastewater; After the scum in the filter press housing 51 is squeezed and filtered for water, due to the inclined mesh plate 52 being set at a downward inclination angle, the scum finally slides down and accumulates at the lower end of the filter press housing 51. The reciprocating pressure plate 53 can push the scum into the forming extrusion cylinder 55 reciprocally to achieve the purpose of automatically compressing and forming and collecting the scum. After the forming extrusion cylinder 55 is full, the sealing plug 57 is unscrewed along the forming extrusion cylinder 55, and the exposed cleaning port 58 on the forming extrusion cylinder 55 can clean the formed scum; When the wastewater enters the filter press housing 51, the wastewater passing through the inclined mesh plate 52 falls into the receiving hopper 7. Since the pH detector 8 is inserted into the lower part of the receiving hopper 7, the pH detector 8 can detect the pH value of the wastewater to determine the acidity and alkalinity. The wastewater in the wastewater treatment rotating cylinder 1 and the wastewater in the receiving hopper 7 are kept circulating. In this way, according to the change situation of the circulating detected wastewater pH value, the second metering hopper 68 with flow control can slowly add acid-base neutralization agents, so that the wastewater treatment can reach the appropriate pH value range with a small amount of acid-base neutralization agents input. And according to the degree of acid-base neutralization of the circulating water, it can be accurately judged whether the best flocculation effect conditions of the flocculant are reached, so that the first metering hopper 22 with flow control can increase the input of the flocculant in the appropriate range of wastewater acid-base neutralization environment, thus ensuring the balance of the flocculant addition amount and the wastewater treatment reaction time. In addition, the circulating wastewater that always contacts the pH detector 8 during the detection process can prevent the pH detector 8 from being affected by the traditional fixed-point arrangement method, resulting in the electrode probe contacting impurities for a long time or the acid-base detection area being fixed, thereby affecting the detection accuracy and service life of the pH value; When the reciprocating operating rod 56 reciprocates, the piston rod of the air pump 69 below it reciprocates accordingly. Thus, when the piston of the air pump 69 is pulled up, the volume inside the air pump 69 increases. According to Boyle's law, for a certain mass of gas, at a constant temperature, the pressure is inversely proportional to the volume. Therefore, the pressure inside the cylinder decreases and becomes less than the external atmospheric pressure. At this time, under the action of the atmospheric pressure, the external air enters the air pump 69 through the air inlet. When the piston squeezes inward, the volume inside the air pump 69 decreases, the gas pressure increases, and becomes greater than the pressure inside the object to be filled. Then the gas is pressed into the object to be filled. There are one-way valves at both the air inlet and the air outlet of the air pump 69, which ensures that the gas can be continuously filled into the target object to achieve the inflation function. Therefore, the air pump 69 continuously inflates and pressurizes the acid-base neutralization tank 61 to facilitate the acid-base neutralization agent to be introduced into the hole groove rotating rod 31 through the dosing conduit 63 along with the filtered wastewater. Finally, the acid-base neutralization agent is sprayed into the stored wastewater in the wastewater treatment drum 1 in a rotating manner through the second stirring frame 33. Uniformly adding the acid-base neutralization agent and cooperating with the stirring operation of the centrifugal impurity removal mechanism 3 can improve the uniformity of acid-base neutralization in each area of the wastewater; When the centrifugal impurity removal mechanism 3 is working, the air pump 69 on one side of the air inlet box 62 inflates the microporous air distribution box 66 through the pressurizing conduit 64. The air passes through the tiny air outlet holes 67 on the microporous air distribution box 66 to generate uniform tiny bubbles. The suspended particles come into full contact with and adhere to the uniformly distributed tiny bubbles, thereby increasing the floating speed of the suspended particles, and further promoting the rapid floating of the flocs generated by the flocculant reaction to the water surface to achieve the solid-liquid separation of impurities and wastewater.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A drainage device for sand and gravel treatment in mining, comprising a wastewater treatment drum (1) for treating sand and gravel wastewater and a centrifugal impurity removal mechanism (3) arranged in the inner cavity of the wastewater treatment drum (1), characterized in that: Also includes: A floating plate mechanism (4), the floating plate mechanism (4) being arranged on the surface of the wastewater treatment drum (1), the floating plate mechanism (4) comprising a T-shaped floating plate (41), a connecting hose (42) being fixed at one end of the T-shaped floating plate (41), and an anti-seepage baffle (46) being fixed at the lower end of the T-shaped floating plate (41); A filter impurity treatment mechanism (5), the filter impurity treatment mechanism (5) being arranged on one side of the floating plate mechanism (4), the filter impurity treatment mechanism (5) comprising a filter press housing (51), a lower port of the filter press housing (51) being fixed with an inclined mesh plate (52), a reciprocating pressure plate (53) being slidably connected inside the filter press housing (51), and waste residue collection components (54) being arranged on both sides of the filter press housing (51); A material injection mechanism (6) is fixed below the impurity filtering mechanism (5); a receiving hopper (7) is provided between the material injection mechanism (6) and the impurity filtering mechanism (5); a pH detector (8) is embedded in the receiving hopper (7); an air filling cylinder (69) is provided between the material injection mechanism (6) and the waste residue collecting assembly (54); and a transmission mechanism (9) is provided between the centrifugal impurity removal mechanism (3) and the impurity filtering mechanism (5).

2. A drainage device for mining sand and gravel processing according to claim 1, characterized in that: The centrifugal impurity removal mechanism (3) is arranged inside the wastewater treatment drum (1), and comprises a hole groove rotating rod (31), a first stirring frame (32) and a second stirring frame (33), wherein the hole groove rotating rod (31) is rotatably connected in the inner cavity of the wastewater treatment drum (1), the first stirring frame (32) and the second stirring frame (33) are both fixed on the surface of the hole groove rotating rod (31), and the second stirring frame (33) is arranged below the first stirring frame (32).

3. A drainage device for mining sand and gravel processing according to claim 2, characterized in that: A docking port (35) is provided at the lower end of the hole groove rotating rod (31); a mounting frame (2) is fixed to the upper end of the wastewater treatment drum (1); a driving motor (34) is fixed to the upper end of the mounting frame (2); an output shaft of the driving motor (34) is fixed to the upper end of the hole groove rotating rod (31); a hollow cavity is provided inside the second stirring frame (33); and a liquid outlet hole (36) communicating with the hollow cavity is provided on the lower end surface of the second stirring frame (33).

4. A drainage device for mining sand and gravel processing according to claim 1, characterized in that: The inner wall of the T-shaped floating plate (41) is provided with a scum discharge port (43) which is connected to a connecting hose (42); sealing slide strips (45) are fixed to the two side surfaces of the T-shaped floating plate (41); the upper end surface of the wastewater treatment drum (1) is provided with a lifting and lowering adjustment port (49) which is slidably matched with the T-shaped floating plate (41); an adsorption magnetic block (47) is fixed to the outer surface of the T-shaped floating plate (41); and an electromagnet guide seat (48) for magnetically attracting and limiting the adsorption magnetic block (47) is fixed to the outer surface of the wastewater treatment drum (1).

5. A drainage device for mining sand and gravel processing according to claim 4, characterized in that: A fixing frame (44) is fixed on the outer surface of the wastewater treatment drum (1), one end of the connecting hose (42) is fixed on the fixing frame (44), the filter press shell (51) is tilted and fixed on a side surface of the fixing frame (44), the waste residue collection assembly (54) comprises two molded extrusion barrels (55), the two molded extrusion barrels (55) are symmetrically fixed on the side surface of the lower part of the filter press shell (51), a cleaning port (58) is opened inside the molded extrusion barrel (55), one end of the molded extrusion barrel (55) is connected to the filter press shell (51), a reciprocating operating rod (56) is slidably penetrated inside the molded extrusion barrel (55), one end of the reciprocating operating rod (56) is fixed on a side surface of the reciprocating pressure plate (53), the other end of the molded extrusion barrel (55) is threadedly connected to a sealing cock (57), one end of the reciprocating operating rod (56) slides through the center of the end surface of the sealing cock (57).

6. A drainage device for mining sand and gravel processing according to claim 1, characterized in that: The injection mechanism (6) comprises an acid-base neutralization box (61), an air inlet box (62) is fixed to one side of the acid-base neutralization box (61), a drug adding conduit (63) is fixed to one end face of the acid-base neutralization box (61), a docking injection port (65) is provided at one end of the drug adding conduit (63) away from the acid-base neutralization box (61), a microporous air distribution box (66) is fixed to the inner bottom wall of the wastewater treatment drum (1), and a microporous air distribution box (66) is fixedly connected to the air inlet box (62). A boosting conduit (64) is provided, and the two inflation cylinders (69) are fixed on the end faces opposite to the acid-base neutralization box (61) and the air inlet box (62). One end of the piston rod of the inflation cylinder (69) is fixed to one end of the reciprocating operating rod (56) through a connecting bracket. A second metering hopper (68) is fixed to the surface of the end of the acid-base neutralization box (61) away from the dosing conduit (63). The upper end face of the microporous air distribution box (66) is provided with an air outlet hole (67) connected to its inner cavity.

7. A drainage device for mining sand and gravel processing according to claim 3, characterized in that: The transmission mechanism (9) comprises a driving wheel (91) fixed on a hole groove rotating rod (31); a driven wheel (92) is arranged on one side of the driving wheel (91); a synchronous belt (94) is arranged between the driving wheel (91) and the driven wheel (92); an eccentric rotating disk (93) is fixed at the lower end of the driven wheel (92); an eccentric shaft (95) is fixed on the lower end surface of the eccentric rotating disk (93); an articulated seat (97) is arranged on one side of the eccentric shaft (95); an articulated operating arm (96) is arranged between the eccentric shaft (95) and the articulated seat (97); a connecting rod (98) is fixed at the lower end of the articulated seat (97); the lower end of the connecting rod (98) is fixed on the reciprocating operating rod (56); and a articulated groove (99) is provided on the lower end surface of the articulated operating arm (96) for rotationally matching the articulated seat (97) and the eccentric shaft (95).

8. A drainage device for mining sand and gravel processing according to claim 7, characterized in that: A fixed-point rotating seat (23) is fixed on one side of the mounting frame (2), a rotating shaft at the center of the upper end surface of the eccentric rotating disk (93) is arranged in the fixed-point rotating seat (23), an assembly seat (21) is fixed on the mounting frame (2), a first metering hopper (22) is embedded and fixed inside the assembly seat (21), and a water inlet (11) with a stop valve is fixed on one side surface of the wastewater treatment drum (1).

9. A drainage device for mining sand and gravel processing according to claim 1, characterized in that: The receiving hopper (7) comprises a liquid collecting box (71), the liquid collecting box (71) is fixed to the upper end of the acid-base neutralization box (61), a liquid collecting port (72) is provided inside the liquid collecting box (71), the liquid collecting port (72) is arranged below the filter press housing (51), and an electromagnetic stop valve (73) is arranged at the pipeline portion of the liquid collecting box (71).

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