Quartz sand pickling device and pickling method thereof

Abstract

The invention discloses a quartz sand pickling device and a pickling method thereof, and relates to the technical field of quartz sand pickling, the quartz sand pickling device comprises a double-cone kettle body and an overturning assembly, the overturning assembly is arranged at the bottom of the double-cone kettle body, pipe shafts are fixedly communicated with the middles of the two sides of the double-cone kettle body, a stirring assembly is arranged in the double-cone kettle body, and the stirring assembly is arranged in the double-cone kettle body. A flow guide assembly is arranged on the inner wall of the double-cone kettle body, the pickling solution and the quartz sand are fully and uniformly mixed by virtue of cooperative cooperation among the overturning assembly, the stirring assembly and the flow guide assembly, and the inner wall of the double-cone kettle body is thoroughly cleaned by virtue of cooperative linkage between the stirring assembly and the flow guide assembly; according to the acid pickling device for the quartz sand, an acid solution and quartz sand are more evenly and fully mixed, the acid pickling effect is improved, and the interior of the double-cone kettle body is conveniently cleaned after acid pickling is completed.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand pickling, in particular to a quartz sand pickling device and a pickling method thereof. Background Art

[0002] Quartz sand pickling is a purification method that uses an acidic solution to remove impurities from quartz sand. The quartz sand pickling process is widely used in electronics, optics, glass, ceramics and other industries. Quartz sand that has been pickled has a higher purity and can meet the high requirements of these industries for raw materials.

[0003] The invention patent with application number CN201811123410X discloses a quartz stone pickling reactor device, comprising two working platforms, a support frame is installed on the two working platforms, a driving mechanism is installed on one of the working platforms, a bearing seat is installed at each end of the support frame, a transmission shaft is installed in each bearing seat, a reactor is installed between the two transmission shafts, one of the transmission shafts is connected to the driving mechanism, the reactor comprises a reaction tank, a closed jacket is installed on the outside of the reaction tank, a gap is provided between the jacket and the reaction tank, the jacket is connected to the two transmission shafts, the two transmission shafts are hollow structures, the hollow parts are connected to the gap, the outer ends of the two transmission shafts are provided with rotating joints, one of the rotating joints is connected to a delivery pump through a pipeline, the other end of the delivery pump is connected to a heating container filled with heat-conducting circulating fluid, and the heating container is connected to another rotating joint through a pipeline. Although the double-cone rotation can make the material mixing relatively uniform, in actual production, due to the differences in quartz sand particle size and density, as well as the influence of factors such as acid concentration distribution, local over- or under-reaction may still occur, resulting in challenges to product quality consistency and affecting the overall product quality.

[0004] In addition, the internal structure of the double-cone kettle is relatively complex, especially the cone joints and some dead corners. After the pickling is completed, the residual acid and impurities are easy to adhere to these parts. Conventional cleaning methods are difficult to completely remove them. Long-term accumulation may cause equipment corrosion, affecting the equipment life and quartz sand pickling quality. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a quartz sand pickling device and a pickling method thereof, so as to achieve more uniform and sufficient mixing of the acid solution and the quartz sand, improve the pickling effect, and facilitate cleaning the interior of the double-cone kettle after the pickling is completed, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a quartz sand pickling device, comprising a double-cone kettle body and a turnover assembly, wherein the turnover assembly is arranged at the bottom of the double-cone kettle body, and the middle of both sides of the double-cone kettle body are fixedly connected with a pipe axis;

[0007] The double-cone kettle body is provided with a stirring assembly inside, and the inner wall of the double-cone kettle body is provided with a flow guide assembly, and the pickling liquid and the quartz sand are fully and evenly mixed by the coordinated cooperation between the flip assembly, the stirring assembly and the flow guide assembly, and the inner wall of the double-cone kettle body is thoroughly cleaned by the coordinated linkage between the stirring assembly and the flow guide assembly;

[0008] The stirring assembly comprises a mounting seat, an end of which is rotatably connected to a toothed disc, and guide rods are symmetrically arranged on both sides of the toothed disc;

[0009] The upper and lower ends of the guide rod are provided with limit seats, and the upper and lower sides of the guide rod are symmetrically sleeved with movable seats, both ends of the movable seat are hinged with stirring rods, and the movable seat is movably provided with an electric telescopic rod, and the telescopic end of the electric telescopic rod is movably connected to the inner side of the stirring rod;

[0010] An electric control spring is provided between the movable seats at the upper and lower sides;

[0011] The flow guide assembly comprises a spiral flow guide plate and an electric push rod. The spiral flow guide plate is arranged on the vertical inner wall of the double-cone kettle body. The telescopic end of the electric push rod is fixedly connected to the movable ring plate.

[0012] Preferably, the mounting seat is detachably connected to one end of the double-cone kettle body away from the inlet and outlet pipes, a driving gear is meshed on one side of the toothed disc, the bottom of the driving gear is transmission-connected to a stirring motor, and the stirring motor is arranged at the end of the double-cone kettle body.

[0013] Preferably, the two movable seats are located between the limiting seats on both sides, and the stirring rods on the movable seats on the upper and lower sides are arranged opposite to each other;

[0014] The ends of the two electric control springs are fixedly connected to the movable seats at the upper and lower sides respectively.

[0015] Preferably, a limit spring is sleeved on the guide rod at a position between the limit seat and the movable seat, and two ends of the limit spring are fixedly connected to the limit seat and the movable seat respectively.

[0016] Preferably, a movable ring plate and a supporting ring plate are respectively provided at the upper and lower ends of the spiral guide plate, the movable ring plate is slidably matched with the vertical inner wall of the double-cone kettle body, the supporting ring plate is fixedly connected to the end of the vertical inner wall of the double-cone kettle body, and the fixed end of the electric push rod passes through the double-cone kettle body;

[0017] The surfaces of the movable ring plate and the supporting ring plate are both provided with hollow grooves.

[0018] Preferably, the end of the tube shaft is rotatably connected to a flange seat, and control valves are provided on the tube shafts on both sides. One end of the double-cone kettle body is provided with an inlet and outlet pipe, and a control valve is provided at the end of the inlet and outlet pipe. The side of the inlet and outlet pipe is fixedly connected to a drain pipe, and a drain valve is provided at the end of the drain pipe. A heating chamber is opened in the shell of the double-cone kettle body.

[0019] Preferably, the flipping assembly includes a bracket and a secondary pulley symmetrically arranged on both sides, the tops of the brackets on both sides are rotatably connected to the pipe shafts on both sides through shaft seats, a reducer is provided at the bottom of the bracket, the output end of the reducer is fixedly sleeved with a main pulley, the secondary pulley is fixedly sleeved on the pipe shaft on one side, the main pulley and the secondary pulley are connected by a transmission belt, a flipping motor is provided on the side of the bracket, and the output shaft of the flipping motor is fixedly connected to the input end of the reducer.

[0020] The present invention also discloses a pickling method for a quartz sand pickling device, comprising the following steps:

[0021] S1. Turn the inlet and outlet pipes to a vertical upward state, open the material control valve, and transport the quartz sand material to be pickled into the double-cone kettle through the inlet and outlet pipes. Close the material control valve, open the control valve, and inject an appropriate amount of pickling liquid into the double-cone kettle through the pipe axis;

[0022] S2, start the stirring motor, drive the gear to drive the toothed disc to rotate, and then rotate the guide rod and drive the stirring rod to rotate to mix and stir the quartz sand and the acid solution;

[0023] S3. While stirring, the electric telescopic rod pushes the stirring rod to swing around the hinge point of the movable seat, so that the stirring rod produces a certain amplitude of elastic swing during the stirring process, thereby enhancing the stirring and mixing effect of the quartz sand and the pickling solution and accelerating the reaction of impurities and the acid solution;

[0024] S4, start the electric push rod to drive the top of the spiral guide plate to move up and down by pushing the movable ring plate, change the position and angle of the spiral guide plate in the double-cone kettle body, guide the pickling liquid and quartz sand to form a spiral flow path in the double-cone kettle body, and improve the pickling efficiency;

[0025] S5. Use the turning assembly to slowly turn the double-cone kettle around the tube axis. During the turning process, cooperate with the stirring assembly and the diversion assembly to make the quartz sand continuously roll and flow in the pickling liquid to ensure that the quartz sand in each part can fully contact and react with the pickling liquid;

[0026] S6. After the pickling reaction reaches the preset time, first shut down the stirring assembly and the guide assembly, open the drain valve to discharge the pickling liquid containing impurities in the double-cone kettle body, then inject clean water into the double-cone kettle body through the pipe shaft, start the stirring motor and the flip motor to wash away the residual acid and impurities, and finally open the material control valve to discharge the pickled quartz sand out of the double-cone kettle body through the inlet and outlet pipes.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention cooperates among the turning component, the stirring component and the guide component. In the stirring component, the stirring motor drives the gear disk to rotate, so that the guide rod and the stirring rod rotate. At the same time, the electric telescopic rod pushes the stirring rod to swing, thereby enhancing the stirring effect. The electric control spring can drive the movable seat and the stirring rod to slide and cooperate with the spiral guide plate, so that the position of the stirring rod can change adaptively with the turning of the double-cone kettle body and the flow state of the material, thereby maintaining uniform load and improving the uniformity of stirring and mixing. The spiral guide plate of the guide component guides the pickling solution and quartz sand to form a spiral flow path, thereby further improving the mixing uniformity and ensuring that the pickling solution and the quartz sand are in full contact and reaction.

[0029] 2. After pickling, the present invention adjusts the stirring rod to make it fit with the inner conical surface of the double-conical kettle, starts the stirring motor, and uses a high-pressure cleaning agent and an electric push rod to reciprocate the spiral guide plate up and down, so as to effectively clean the acidic liquid and quartz sand debris attached to the conical surface and cylindrical surface of the inner wall of the double-conical kettle, prevent equipment corrosion, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0032] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention;

[0034] Figure 5 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0035] In the figure: 1. Double cone kettle body; 101. Pipe shaft; 102. Flange seat; 103. Control valve; 104. Inlet and outlet pipes; 105. Control valve; 106. Drain pipe; 107. Drain valve; 2. Turnover assembly; 201. Bracket; 202. Shaft seat; 203. Secondary pulley; 204. Speed ​​reducer; 205. Main pulley; 206. Drive belt; 207. Turnover motor; 3. Stirring assembly; 301. Installation Mounting seat; 302, toothed disc; 303, guide rod; 304, driving gear; 305, stirring motor; 306, limit seat; 307, movable seat; 308, stirring rod; 309, electric telescopic rod; 310, limit spring; 311, electric control spring; 4, guide assembly; 401, spiral guide plate; 402, support ring plate; 403, movable ring plate; 404, electric push rod; 405, hollow groove. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] First embodiment

[0038] See also Figure 1-5 The present embodiment provides a quartz sand pickling device, comprising a double-cone kettle body 1 and a turnover assembly 2, the turnover assembly 2 is arranged at the bottom of the double-cone kettle body 1, the middle of both sides of the double-cone kettle body 1 are fixedly connected with a pipe shaft 101, the pipe shaft 101 is used to add acid solution and other liquid materials, the end of the pipe shaft 101 is rotatably connected with a flange seat 102, the pipe shaft 101 on both sides is provided with a control valve 103, the control valve 103 is used to control the on and off of the pipe shaft 101, one end of the double-cone kettle body 1 is provided with an inlet and outlet pipe 104, the inlet and outlet A material control valve 105 is provided at the end of the material pipe 104, and the inlet and outlet pipes 104 are used for injecting and discharging solid materials. The material control valve 105 is used to control the on-off of the inlet and outlet pipes 104. A drain pipe 106 is fixedly connected to the side of the inlet and outlet pipes 104, and a drain valve 107 is provided at the end of the drain pipe 106. The drain pipe 106 is used for discharging liquid materials, and the drain valve 107 is used to realize the on-off of the drain pipe 106. A heating chamber is opened in the shell of the double-conical kettle body 1, and the heating chamber is used to heat the material in the double-conical kettle body 1.

[0039] The flip assembly 2 includes a bracket 201 and a secondary pulley 203 symmetrically arranged on both sides. The tops of the brackets 201 on both sides are rotatably connected to the pipe shafts 101 on both sides through shaft seats 202. A reducer 204 is provided at the bottom of the bracket 201. The output end of the reducer 204 is fixedly sleeved with a main pulley 205. The secondary pulley 203 is fixedly sleeved on the pipe shaft 101 on one side. The main pulley 205 and the secondary pulley 203 are connected for transmission through a transmission belt 206. A flip motor 207 is provided on the side of the bracket 201. The output shaft of the flip motor 207 is fixedly connected to the input end of the reducer 204.

[0040] Specifically, the flipping motor 207 is started, and after being decelerated by the reducer 204, the main pulley 205 is driven to rotate, and the main pulley 205 drives the secondary pulley 203 to rotate through the transmission belt 206, and the secondary pulley 203 drives the tube shaft 101 on one side to rotate, thereby realizing the flipping action of the double-cone kettle body 1, and achieving the purpose of mixing between materials.

[0041] When in use, first check whether all components of the quartz sand pickling device are normal, including the double-cone kettle body 1, the flip assembly 2, the stirring assembly 3, the guide assembly 4 and the valves, etc., to ensure the stability and sealing of the connection between the flange seat 102 at the end of the pipe shaft 101 and the acid injection pipeline, and the opening and closing states of valves such as the control valve 103, the material control valve 105, and the drain valve 107 are correct and leak-free. Since the pipe shaft 101 is rotatably connected to the flange seat 102, the rotation of the pipe shaft 101 will not drive the flange seat 102 and the acid injection pipeline connected to the flange seat 102 to rotate.

[0042] Secondly, the inlet and outlet pipes 104 are adjusted to the top, and the quartz sand material to be pickled is transported to the double-cone kettle body 1 through the inlet and outlet pipes 104. According to the characteristics of the quartz sand and the process requirements, the appropriate feed amount is determined. After the feeding is completed, the control valve 105 is closed, and the acid pipeline connected to the pipe axis 101 is opened. An appropriate amount of pickling liquid is injected into the double-cone kettle body 1 through the control valve 103. The type, concentration and dosage of the pickling liquid are determined according to the impurity components contained in the quartz sand and the pickling process standards.

[0043] Then start the flip motor 207, which drives the main pulley 205 to rotate through the reducer 204, and the main pulley 205 drives the secondary pulley 203 through the transmission belt 206, so that the double-cone kettle body 1 is slowly flipped around the tube axis 101 on the shaft seat 202 on the top of the bracket 201, so that the quartz sand is constantly rolling and flowing in the pickling liquid. The flipping speed and angle can be adjusted according to the pickling process requirements of the quartz sand by controlling the speed and running time of the flip motor 207.

[0044] After the pickling reaction reaches the predetermined time, first turn off the flip motor 207 to stop stirring the double-cone kettle body 1, then open the drain valve 107 to discharge the pickling liquid containing impurities in the double-cone kettle body 1 through the drain pipe 106. During the drainage process, the inclination angle of the double-cone kettle body 1 can be appropriately adjusted as needed to ensure that the pickling liquid is completely discharged.

[0045] After the drainage is completed, close the drain valve 107, inject clean water into the double-cone kettle body 1 through the pipe shaft 101, start the flip motor 207, and clean the quartz sand. During the cleaning process, the flip frequency can be appropriately adjusted to fully mix the quartz sand with the clean water to wash away the residual acid and impurities. After the cleaning is completed, open the drain valve 107 again to discharge the cleaning waste water, and repeat the above cleaning steps until the discharged cleaning water meets the specified water quality standards.

[0046] After the cleaning is qualified, the material control valve 105 is opened, and the pickled quartz sand is discharged from the double-cone kettle body 1 through the inlet and outlet pipes 104, completing the entire pickling process, and the discharged quartz sand is subsequently dehydrated, dried, etc. to obtain a quartz sand product that meets the quality requirements.

[0047] During the entire pickling process, the concentration, temperature, reaction time and other parameters of the pickling solution can be monitored and adjusted in real time through sensors according to actual conditions to ensure the stability and consistency of the pickling effect. At the same time, the discharged waste acid solution and cleaning wastewater are properly treated to meet environmental protection requirements.

[0048] Furthermore, in the process of mixing the pickling liquid and the quartz sand material, only the flipping of the double cone kettle body 1 is used for mixing, which makes it difficult to make the acid liquid and the material contact evenly and fully, and the pickling effect is poor. Therefore, the following improvements are made:

[0049] A stirring assembly 3 is provided inside the double-cone kettle body 1, and the stirring assembly 3 includes a mounting seat 301, which is detachably connected to one end of the double-cone kettle body 1 away from the inlet and outlet pipes 104, and the end of the mounting seat 301 is rotatably connected to a toothed disc 302, and guide rods 303 are symmetrically provided on both sides of the toothed disc 302. A driving gear 304 is meshed on one side of the toothed disc 302, and a stirring motor 305 is transmission-connected to the bottom of the driving gear 304. The stirring motor 305 is arranged at the end of the double-cone kettle body 1, and the stirring motor 305 drives the driving gear 304 to rotate, and the driving gear 304 drives the toothed disc 302 to rotate, and the toothed disc 302 drives the guide rod 303 to rotate, thereby providing power for mixing and stirring the materials.

[0050] Limit seats 306 are provided at the upper and lower ends of the guide rod 303, and movable seats 307 are symmetrically and movably sleeved on the upper and lower sides of the guide rod 303. The two movable seats 307 are located between the limit seats 306 on both sides. A stirring rod 308 is hinged at both ends of the movable seat 307. The stirring rods 308 on the movable seats 307 on the upper and lower sides are arranged opposite to each other. An electric telescopic rod 309 is movably provided on the movable seat 307. The telescopic end of the electric telescopic rod 309 is movably connected to the inner side of the stirring rod 308. The rotation of the guide rod 303 drives the movable seat 307 and the stirring rod 308 to rotate, so as to achieve mixing and stirring between the materials. During the stirring process, the stirring rod 308 is driven to swing back and forth by the extension and retraction of the electric telescopic rod 309, so as to improve the stirring effect.

[0051] A limit spring 310 is sleeved on the guide rod 303 at a position between the limit seat 306 and the movable seat 307. The two ends of the limit spring 310 are fixedly connected to the limit seat 306 and the movable seat 307 respectively. The limit spring 310 is used to reset and limit the movable seat 307 after the movable seat 307 slides along the guide rod 303.

[0052] The inner wall of the double-cone kettle body 1 is provided with a guide assembly 4, which includes a spiral guide plate 401 and an electric push rod 404. The spiral guide plate 401 is arranged on the vertical inner wall of the double-cone kettle body 1. The spiral guide plate 401 is made of elastic material. The upper and lower ends of the spiral guide plate 401 are respectively provided with a movable ring plate 403 and a support ring plate 402. The movable ring plate 403 is slidably matched with the vertical inner wall of the double-cone kettle body 1, and the support ring plate 402 is fixedly connected to the end of the vertical inner wall of the double-cone kettle body 1. The fixed end of the electric push rod 404 passes through the double-cone kettle body 1, and the telescopic end of the electric push rod 404 is connected to the movable ring plate 40 3 is fixedly connected, and hollow grooves 405 are provided on the surfaces of the movable ring plate 403 and the support ring plate 402. The hollow grooves 405 play a role of disturbing the flow and accelerating the mixing during the flow of the pickling liquid and the quartz sand. The spiral guide plate 401 is arranged on the inner wall of the double-cone kettle body 1 to guide the material to move along the spiral path when the double-cone kettle body 1 is turned over, thereby increasing the movement distance and mixing time of the material in the double-cone kettle body 1 and improving the mixing uniformity. At the same time, the telescopic movement of the electric push rod 404 is used to drive the movable ring plate 403 to move up and down, and the pitch of the spiral guide plate 401 is adjusted according to the production needs.

[0053] When in use, the stirring motor 305 is started, and the driving gear 304 drives the toothed disc 302 to rotate, thereby rotating the guide rod 303 to drive the limit seat 306 and the movable seat 307 on the guide rod 303 to rotate, thereby realizing the rotation of the stirring rods 308 on the upper and lower sides. At the same time, the electric telescopic rod 309 is started, and the electric telescopic rod 309 is extended and retracted according to a preset program to push the stirring rod 308 to swing around the hinge point of the movable seat 307, so that the stirring rod 308 can achieve vertical mixing between the acid liquid and the material while achieving horizontal stirring and mixing.

[0054] At the same time, when the double-cone kettle body 1 is turned over, the pickling liquid and quartz sand are guided to form a specific flow path in the double-cone kettle body 1 under the action of the spiral guide plate 401, further improving the uniformity of the mixing of the pickling liquid and quartz sand materials and improving the pickling efficiency.

[0055] However, during the flipping process of the double-cone kettle body 1, the pickling liquid and quartz sand materials will flow from one end to the other end. During this process, the stirring participation of the stirring rod 308 at one end gradually decreases, while the load of the stirring rod 308 at the other end gradually increases, resulting in uneven force on the stirring rods 308 at both ends, which will accelerate wear. When the double-cone kettle body 1 is flipped to a horizontal state, the stirring rod 308 cannot stir the material in the middle of the double-cone kettle body 1, so the following improvements are made:

[0056] An electric-controlled spring 311 is provided between the movable seats 307 on the upper and lower sides. The ends of the two electric-controlled springs 311 are fixedly connected to the movable seats 307 on the upper and lower sides respectively. The electric-controlled spring 311 is an existing mature technology, and is composed of a spring body made of magnetic conductive material and a coil surrounding the spring. Based on the principle of electromagnetic induction, when current passes through the electromagnetic coil, a magnetic field is generated. This magnetic field interacts with the spring body. The current size determines the strength of the magnetic field. Changes in the magnetic field strength will change the stress distribution inside the spring. When the control system receives an instruction to adjust the spring expansion and contraction, it will calculate and output a suitable current value to the electromagnetic coil, accurately control the expansion and contraction of the electric-controlled spring 311, and use the expansion and contraction of the electric-controlled spring 311 to drive the movable seat 307 and the stirring rod 308 to slide along the guide rod 303.

[0057] When the double-cone kettle body 1 is turned over, the electric control spring 311 is started, so that the electric control springs 311 on the upper and lower sides pull the movable seats 307 on both sides to close, so that the ends of the stirring rods 308 on both sides are close to each other. Please refer to the attached manual for details. Figure 4, start the electric push rod 404 located on the same side of the upper and lower groups to extend, so that the stirring rod 308 on one side of the vertical direction is further expanded outward, and then when the ends of the stirring rods 308 on the upper and lower sides are close to each other, the ends of the upper and lower stirring rods 308 on this side respectively contact the upper and lower surfaces of one side of the spiral guide plate 401. At this time, under the pulling action of the electric control spring 311, the upper and lower groups of stirring rods 308 are combined into a whole, while the stirring rod 308 on the other side in the vertical direction is still in the initial state, that is, the stirring rod 308 on this side does not correspond to the surface of the spiral guide plate 401. At this time, the stirring motor 305 is rotated back and forth to realize the forward and reverse reciprocating rotation of the stirring rod 308, and under the guiding action of the spiral surface of the spiral guide plate 401, the upper and lower groups of stirring rods 308 are realized as a whole along the guide rod 303 reciprocating up and down, and the up and down reciprocating motion matches the flipping action of the double-cone kettle body 1, that is, the overall movement direction of the stirring rods 308 on the same side of the upper and lower groups is consistent with the upper and lower surfaces of the double-cone kettle body 1. During the flipping of the double-cone kettle body 1, the flow direction of the quartz sand material is the same. The more the quartz sand material flows toward one end of the double-cone kettle body 1, the greater the movement distance of the upper and lower groups of stirring rods 308 toward this end as a whole. For example, when the double-cone kettle body 1 is flipped to a vertical state, the upper and lower groups of stirring rods 308 move as a whole to the bottom of the double-cone kettle body 1. When the double-cone kettle body 1 is flipped to a horizontal state, the upper and lower groups of stirring rods 308 move as a whole to the middle of the double-cone kettle body 1, thereby realizing the synchronous adaptive change of the position of the stirring rod 308 with the change of the state of the quartz sand material and the state of the double-cone kettle body 1. At the same time, the two stirring rods 308 located on the other side of the upper and lower groups of stirring rods 308 still swing back and forth under the drive of the electric telescopic rod 309, so that the upper and lower groups of stirring rods 308 are always involved in mixing and stirring during the flipping process of the double-cone kettle body 1, maintaining uniform load and improving the uniformity of stirring and mixing, thereby utilizing the coordinated cooperation between the flipping component 2, the stirring component 3 and the diversion component 4 to fully and evenly mix the pickling liquid and the quartz sand.

[0058] Second embodiment

[0059] After the quartz sand is pickled, the inner wall of the double cone kettle body 1 is still attached with acidic liquid, which causes the inner wall of the double cone kettle body 1 to corrode, and fine quartz sand fragments remain on the inner wall of the double cone kettle body 1, which is inconvenient to clean. In order to solve this problem:

[0060] When in use, before cleaning the inner wall of the double-cone kettle body 1, the electric telescopic rod 309 is used to adjust the inclination angle of the stirring rod 308, so that the stirring rods 308 on the upper and lower sides are parallel to the inner cone surfaces of the cones at both ends of the double-cone kettle body 1, and then the electric control spring 311 is started to extend, so that the upper and lower movable seats 307 are separated from each other until the stirring rod 308 fits the inner cone surface of the double-cone kettle body 1. When cleaning, the cleaning agent is sprayed onto the inner wall of the double-cone kettle body 1 in a high-pressure state, and the stirring motor 305 is started to rotate the stirring rod 308. Under the action of the cleaning agent, the inner cone surface of the double-cone kettle body 1 is cleaned, and the electric The push rod 404 utilizes the extension and retraction of the electric push rod 404 to make the spiral guide plate 401 reciprocate up and down through the movable ring plate 403, so that the up and down movement of the outer spiral surface of the spiral guide plate 401 is used to scrape and clean the cylindrical inner wall of the double-cone kettle body 1 under the action of the high-pressure cleaning agent, and at the same time, the cleaning agent flows along the spiral surface of the spiral guide plate 401 to clean the spiral guide plate 401, thereby achieving the cleaning of the conical surface and cylindrical surface of the inner wall of the double-cone kettle body 1. The coordinated linkage between the stirring component 3 and the guide component 4 is used to achieve thorough cleaning of the inner wall of the double-cone kettle body 1.

[0061] Third embodiment

[0062] This embodiment provides a pickling method for a quartz sand pickling device, the steps are as follows:

[0063] S1. Before operation, comprehensively check the operating conditions of all components of the quartz sand pickling device to ensure that the double cone kettle body 1 is not damaged, the transmission components of the turnover assembly 2 are tightly connected and well lubricated, and the parts of the stirring assembly 3 and the flow guide assembly 4 are not loose. At the same time, confirm that the valve control valve 103, the material control valve 105, the drain valve 107, etc. can be opened and closed normally without leakage;

[0064] With the help of the turning assembly 2, the feed pipe 104 is turned over accurately to a vertically upward state, and the material control valve 105 is opened. The quartz sand material to be pickled, which has been preliminarily screened and measured, is slowly and evenly conveyed to the double-cone kettle body 1 through a special conveying device, such as a screw conveyor or a belt conveyor. After the feeding is completed, the material control valve 105 is closed in time to ensure the sealing of the double-cone kettle body 1;

[0065] Open the control valve 103, use the acid storage tank and the matching delivery pipeline, and inject a proper amount of pickling liquid into the double-cone kettle body 1 through the pipe shaft 101. The selection of the pickling liquid depends on the type and characteristics of the impurities contained in the quartz sand. Common pickling liquids include hydrochloric acid, sulfuric acid or hydrofluoric acid. The concentration and dosage of the pickling liquid are accurately prepared and controlled in strict accordance with the process standards to ensure the pickling effect while avoiding acid waste and excessive corrosion to the equipment;

[0066] S2, start the stirring motor 305, the motor output shaft drives the driving gear 304 to rotate, the driving gear 304 is tightly meshed with the toothed disc 302, thereby driving the toothed disc 302 to rotate, the rotation of the toothed disc 302 further causes the guide rod 303 connected thereto to rotate around the central axis of the mounting seat 301, the rotation of the guide rod 303 drives the stirring rod 308 to rotate synchronously, and the quartz sand and the acid solution in the double-cone kettle body 1 are preliminarily mixed and stirred, and the speed of the stirring motor 305 is reasonably set according to factors such as the particle size of the quartz sand, the viscosity of the pickling solution and the size of the double-cone kettle body 1, so as to ensure the uniformity and efficiency of the stirring effect;

[0067] S3. While the stirring rod 308 rotates with the guide rod 303 to stir, the electric telescopic rod 309 performs telescopic movement according to the preset program and parameters. The telescopic end of the electric telescopic rod 309 pushes the stirring rod 308 to swing around the hinge point of the movable seat 307. The limit seats 306 symmetrically arranged on the upper and lower sides of the guide rod 303 effectively limit the movement range of the movable seat 307. In addition, the synergistic effect of these components enables the stirring rod 308 to not only perform conventional circular motion during the stirring process, but also produce elastic swings of a certain amplitude. This composite motion mode greatly enhances the stirring and mixing effect of the quartz sand and the pickling solution, so that the pickling solution can more fully contact the impurities on the surface of the quartz sand, and significantly accelerate the chemical reaction rate of the impurities and the acid solution;

[0068] S4, start the electric push rod 404. When the electric push rod 404 is extended and retracted, it pushes the movable ring plate 403 to slide up and down on the vertical inner wall of the double-cone kettle body 1. The movable ring plate 403 and the inner wall of the double-cone kettle body 1 adopt a high-precision sliding fit design to ensure the smoothness and sealing of the movement. The up and down movement of the movable ring plate 403 drives the top of the spiral guide plate 401 connected thereto to move up and down synchronously, thereby accurately changing the position and angle of the spiral guide plate 401 in the double-cone kettle body 1. The movable ring plate 403 and the supporting ring plate 402 are respectively arranged at the upper and lower ends of the spiral guide plate 401, and hollow grooves 405 are opened on their surfaces. These hollow grooves 405 play a role in disturbing the flow and accelerating the mixing during the flow of the pickling solution and quartz sand. By adjusting the position and angle of the spiral guide plate 401, the pickling solution and quartz sand are guided to form a stable and efficient spiral flow path in the double-cone kettle body 1, thereby further improving the pickling efficiency and ensuring that the pickling process is more uniform and sufficient.

[0069] S5. After the flipping motor 207 is started, the main pulley 205 is driven to rotate through the deceleration and torque-increasing effect of the reducer 204, and then the secondary pulley 203 and the pipe shaft 101 are driven to rotate through the transmission belt 206, so as to realize the slow flipping of the double-cone kettle body 1. During the flipping process, the flipping speed and angle are strictly controlled. The flipping speed is optimized and adjusted according to the characteristics of the quartz sand, the properties of the pickling solution, and the working conditions of the stirring and diversion components. At the same time, with the synergistic effect of the stirring component 3 and the diversion component 4, the quartz sand is rolled and flowed in the pickling solution in all directions and without dead ends, ensuring that the quartz sand in various parts can fully contact and react with the pickling solution, further improving the uniformity and consistency of the pickling effect.

[0070] S6. When the pickling reaction reaches a predetermined time, the stirring component 3 and the guide component 4 are first shut down by the control system to stop the stirring and guide movement in the double-cone kettle body 1, and then the drain valve 107 is slowly opened to discharge the pickling liquid containing impurities in the double-cone kettle body 1 through the drain pipe 106 to a special waste acid collection container by gravity. During the discharge process, the inclination angle of the double-cone kettle body 1 can be appropriately adjusted as needed to ensure that the pickling liquid is discharged as cleanly as possible and reduce residue;

[0071] Close the drain valve 107, and inject a proper amount of clean water into the double-cone kettle body 1 through the pipe shaft 101. The amount of clean water injected is reasonably determined according to the residual acid amount of the quartz sand and the cleaning requirements. Start the stirring motor 305 and the flipping motor 207 to make the stirring component 3 and the flipping component 2 run again. Under the synergistic effect of stirring and flipping, the clean water and the quartz sand are fully mixed to effectively wash away the residual acid and impurities. During the cleaning process, the stirring speed and flipping frequency can be adjusted multiple times according to the actual situation to improve the cleaning effect. After the cleaning is completed, open the drain valve 107 again to discharge the cleaning wastewater. To ensure the cleaning effect, the above cleaning steps can be repeated until the discharged cleaning water meets the specified water quality standards, such as the pH value is close to neutral, the impurity content is lower than a specific threshold, etc.;

[0072] After confirming that the cleaning is qualified, the flip component 2 is used again to flip the inlet and outlet pipes 104 to a suitable discharge position, generally in a tilted downward state, and the control valve 105 is opened to discharge the pickled quartz sand from the double cone kettle body 1 through the inlet and outlet pipes 104. The discharged quartz sand can be directly transported to subsequent dehydration and drying equipment for further processing to obtain quartz sand products that meet quality requirements.

[0073] It should be noted that during the entire pickling process, various sensors installed in the double-cone kettle body 1, such as temperature sensors, pH sensors, concentration sensors, etc., can be used to monitor key parameters such as concentration, temperature, reaction time, etc. of the pickling solution in real time. The monitoring data is fed back to the control system in real time. The operator can make timely and accurate adjustments to the operating parameters of each equipment based on the feedback data to ensure the stability and consistency of the pickling effect. At the same time, the discharged waste acid liquid and cleaning wastewater must be properly handled in accordance with environmental protection requirements, such as using neutralization, precipitation, filtration and other processes to reduce the pH and harmful substance content in the wastewater, and then discharge it after meeting the emission standards.

[0074] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A quartz sand pickling device, comprising a double-cone kettle body (1) and a turnover assembly (2), wherein the turnover assembly (2) is arranged at the bottom of the double-cone kettle body (1), characterized in that: The middle parts of both sides of the double-cone kettle body (1) are fixedly connected with a pipe shaft (101); The double-cone kettle (1) is provided with a stirring assembly (3) inside, and the inner wall of the double-cone kettle (1) is provided with a flow guide assembly (4), and the pickling liquid and the quartz sand are fully and evenly mixed by the coordinated cooperation among the turning assembly (2), the stirring assembly (3) and the flow guide assembly (4), and the inner wall of the double-cone kettle (1) is thoroughly cleaned by the coordinated linkage between the stirring assembly (3) and the flow guide assembly (4); The stirring assembly (3) comprises a mounting seat (301), an end of the mounting seat (301) being rotatably connected to a toothed disc (302), and guide rods (303) are symmetrically provided on both sides of the toothed disc (302); The upper and lower ends of the guide rod (303) are both provided with limit seats (306), and the upper and lower sides of the guide rod (303) are symmetrically and movably sleeved with movable seats (307), both ends of the movable seat (307) are hinged with stirring rods (308), and the movable seat (307) is movably provided with an electric telescopic rod (309), and the telescopic end of the electric telescopic rod (309) is movably connected to the inner side of the stirring rod (308); An electric control spring (311) is provided between the movable seats (307) located at the upper and lower sides.

2. The quartz sand pickling device according to claim 1, characterized in that: The mounting seat (301) is detachably connected to one end of the double-cone kettle body (1) away from the inlet and outlet pipes (104); a driving gear (304) is meshed on one side of the toothed disc (302); a stirring motor (305) is transmission-connected to the bottom of the driving gear (304); and the stirring motor (305) is arranged at the end of the double-cone kettle body (1).

3. The quartz sand pickling device according to claim 1, characterized in that: The two movable seats (307) are located between the limiting seats (306) on both sides, and the stirring rods (308) on the movable seats (307) on the upper and lower sides are arranged opposite to each other; The ends of the two electric control springs (311) are fixedly connected to the movable seats (307) at the upper and lower sides respectively.

4. The quartz sand pickling device according to claim 3, characterized in that: A limit spring (310) is sleeved on the guide rod (303) at a position between the limit seat (306) and the movable seat (307), and two ends of the limit spring (310) are respectively fixedly connected to the limit seat (306) and the movable seat (307).

5. The quartz sand pickling device according to claim 1, characterized in that: The flow guide assembly (4) comprises a spiral flow guide plate (401) and an electric push rod (404), wherein the spiral flow guide plate (401) is arranged on the vertical inner wall of the double-cone kettle body (1), and the fixed end of the electric push rod (404) passes through the double-cone kettle body (1); The upper and lower ends of the spiral guide plate (401) are respectively provided with a movable ring plate (403) and a support ring plate (402); the movable ring plate (403) is slidably matched with the vertical inner wall of the double-cone kettle body (1); the support ring plate (402) is fixedly connected to the end of the vertical inner wall of the double-cone kettle body (1); and the telescopic end of the electric push rod (404) is fixedly connected to the movable ring plate (403); The surfaces of the movable ring plate (403) and the supporting ring plate (402) are both provided with hollow grooves (405).

6. The quartz sand pickling device according to claim 1, characterized in that: The end of the tube shaft (101) is rotatably connected to a flange seat (102), and control valves (103) are provided on the tube shaft (101) on both sides. An inlet and outlet pipe (104) is provided at one end of the double-cone kettle body (1), and a control valve (105) is provided at the end of the inlet and outlet pipe (104). A drain pipe (106) is fixedly connected to the side of the inlet and outlet pipe (104), and a drain valve (107) is provided at the end of the drain pipe (106). A heating chamber is provided in the shell of the double-cone kettle body (1).

7. The quartz sand pickling device according to claim 1, characterized in that: The flip assembly (2) comprises a bracket (201) and a secondary pulley (203) symmetrically arranged on both sides, the tops of the brackets (201) on both sides are rotatably connected to the tube shafts (101) on both sides through shaft seats (202), a reducer (204) is provided at the bottom of the bracket (201), a main pulley (205) is fixedly sleeved on the output end of the reducer (204), the secondary pulley (203) is fixedly sleeved on the tube shaft (101) on one side, the main pulley (205) and the secondary pulley (203) are connected in transmission through a transmission belt (206), and a flip motor (207) is provided on the side of the bracket (201), and the output shaft of the flip motor (207) is fixedly connected to the input end of the reducer (204).

8. A pickling method for a quartz sand pickling device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1, turning the inlet and outlet pipes (104) to a vertically upward state, opening the material control valve (105), conveying the quartz sand material to be pickled into the double-cone kettle body (1) through the inlet and outlet pipes (104), closing the material control valve (105), opening the control valve (103), and injecting an appropriate amount of pickling liquid into the double-cone kettle body (1) through the pipe shaft (101); S2, starting the stirring motor (305), driving the gear (304) to drive the toothed disc (302) to rotate, thereby rotating the guide rod (303) and driving the stirring rod (308) to rotate to mix and stir the quartz sand and the acid solution; S3, while stirring, the electric telescopic rod (309) pushes the stirring rod (308) to swing around the hinge point of the movable seat (307), so that the stirring rod (308) generates a certain amplitude of elastic swing during the stirring process, thereby enhancing the stirring and mixing effect of the quartz sand and the pickling solution and accelerating the reaction of impurities and the acid solution; S4, starting the electric push rod (404) to drive the top of the spiral guide plate (401) to move up and down by pushing the movable ring plate (403), thereby changing the position and angle of the spiral guide plate (401) in the double-cone kettle body (1), guiding the pickling liquid and quartz sand to form a spiral flow path in the double-cone kettle body (1), and improving the pickling efficiency; S5, using the turning assembly to slowly turn the double-cone kettle body (1) around the tube axis (101), and in the turning process, in cooperation with the stirring assembly (3) and the flow guide assembly (4), the quartz sand is continuously turned and flows in the pickling liquid, ensuring that the quartz sand at all positions can fully contact and react with the pickling liquid; S6. After the pickling reaction reaches a predetermined time, the stirring component (3) and the flow guide component (4) are first shut down, and the drain valve (107) is opened to discharge the pickling liquid containing impurities in the double-cone kettle body (1). Then, clean water is injected into the double-cone kettle body (1) through the pipe shaft (101), and the stirring motor (305) and the turning motor (207) are started to wash away the residual acid liquid and impurities. Finally, the material control valve (105) is opened to discharge the pickled quartz sand from the double-cone kettle body (1) through the inlet and outlet pipes (104).

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