A quartz sand pickling equipment

Abstract

The present invention relates to the field of quartz sand processing, and in particular to a quartz sand pickling device, including a pickling mechanism, a feeding mechanism, a circulation mechanism, a pH regulating mechanism and a PLC controller. The pickling mechanism includes a circulation pump, which is used to realize the flow and transportation of quartz sand during the pickling process, and the feeding mechanism is used to add quartz sand into the pickling box; the circulation mechanism is used for recycling the pickling solution; the pH regulating mechanism is used to adjust the pH value in the pickling box; and the PLC controller is used to control the operation of the above mechanisms. The present invention continuously flows the mixed liquid in the pickling mechanism to avoid the accumulation of quartz sand, thereby increasing the pickling speed, realizes the recycling of the pickling solution through the circulation mechanism, effectively reduces the production cost, and effectively adjusts the pH value of the pickling solution through the pH regulating mechanism, thereby improving the pickling efficiency. In summary, the high-efficiency and low-cost operation of the quartz sand pickling process is achieved.

Description

Technical Field

[0001] The invention relates to the field of quartz sand processing, in particular to quartz sand pickling equipment. Background Art

[0002] During the processing of quartz sand, it needs to be purified and impurities removed by pickling. Therefore, hydrofluoric acid, hydrochloric acid, pure water, etc. need to be mixed and the quartz sand needs to be soaked. The surface of the quartz sand is soaked and rinsed with a mixture of hydrofluoric acid, hydrochloric acid and pure water to remove impurities on the surface of the quartz sand. The pickling liquid produced after pickling contains a large amount of acidic substances, which needs to be discharged through a special treatment process. It not only consumes a lot of resources, but also causes a waste of manpower and material resources. Therefore, the recycling of the pickling liquid is an effective solution to the above problems.

[0003] However, due to the differences in the impurity components of quartz sand, the consumption of effective components in the pickling solution during the pickling process of different batches of quartz sand is different, which makes it difficult to control the amount of the pickling solution when it is recycled.

[0004] Moreover, as the effective ingredients in the pickling solution are consumed, the efficiency of quartz sand pickling slows down, and even fails to achieve the intended pickling effect. During the pickling process, it is difficult for technicians to know the degree of completion of the pickling, which can easily lead to operational errors and affect product quality.

[0005] In addition, the traditional quartz sand pickling process is generally carried out by flushing and soaking with pickling liquid, which easily causes the accumulation of quartz sand, thereby reducing the efficiency of pickling. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a quartz sand pickling equipment, which solves the problem of low pickling speed of quartz sand by automatically adjusting the pH value of the acid solution; reduces material consumption by recycling the pickling solution, and solves the problems of high production cost and material waste; increases the effective contact between the pickling solution and quartz sand by flow flushing, and solves the problem of low pickling efficiency of quartz sand, which is specifically achieved through the following technical solutions.

[0007] A quartz sand pickling device comprises a pickling mechanism, a feeding mechanism, a circulation mechanism, a pH regulating mechanism and a PLC controller.

[0008] The pickling mechanism comprises a pickling box, and the feeding mechanism is installed directly above the pickling box, and the feeding mechanism is used to add quartz sand into the pickling box.

[0009] A liquid level sensor is installed on the top of the pickling box, and the liquid level sensor is used to measure the liquid level in the pickling box. A pH meter is installed on the side of the pickling box, and the probe of the pH meter is arranged in the pickling box. The pH meter is used to measure the pH value of the mixed liquid in the pickling box. Several weighing modules are installed at the bottom of the pickling box, and the weighing modules are used to measure the weight of the pickling box.

[0010] The pickling box is fixed to a second liquid inlet pipe, the second liquid inlet pipe is connected to the pH adjustment mechanism, and the pH adjustment mechanism is used to adjust the pH value in the pickling box.

[0011] The pickling box is fixed to a first liquid inlet pipe, the first liquid inlet pipe is connected to the circulation mechanism, and the circulation mechanism is used for the circulation of the pickling liquid.

[0012] The bottom of the pickling tank is fixed to the first end of the circulation pipe, the second end of the circulation pipe is fixed to the first port of the circulation pump, a switching part is installed on the second port of the circulation pump, and the switching part can be connected with the pickling tank and the circulation mechanism respectively. A control part is installed on the top of the switching part, and the control part is used to switch the connection object of the switching part.

[0013] The liquid level sensor, the acid-base meter, the weighing module, the circulation pump, the feeding mechanism, the circulation mechanism, and the pH adjustment mechanism are respectively connected to the PLC controller.

[0014] Preferably, the specific operating steps of the quartz sand pickling equipment are:

[0015] S1. The PLC controller controls the circulation mechanism to add pickling liquid into the pickling tank until the liquid level reaches a preset height value.

[0016] S2. The PLC controller controls the feeding mechanism to add quartz sand into the pickling box until the total weight of the pickling box reaches a preset weight value.

[0017] S3. The operator connects the switching unit with the pickling tank, and the PLC controller controls the circulation pump to run in the forward direction.

[0018] S4. The PLC controller controls the pH adjustment mechanism to add an acidic reagent into the pickling box until the pH value in the pickling box is adjusted to a preset pH value.

[0019] S5. The operator connects the switching unit with the circulation mechanism, and the PLC controller controls the circulation pump to run in reverse.

[0020] Preferably, the second port of the circulation pump is fixed to the circulation main pipe, and the circulation main pipe is fixed to the middle part of the diversion pipe.

[0021] The side wall of the shunt pipe is provided with a slot, a sliding pin is arranged in the slot and moves along the slot, the sliding pin is fixedly connected to the plug, and the plug is arranged in the shunt pipe and moves along the slot.

[0022] The plug can be sealed and overlapped with the second branch pipe, the second branch pipe is fixed to the diversion pipe, and the second branch pipe is communicated with the liquid inlet end of the circulation mechanism.

[0023] The plug can also be in sealing overlap with a first branch pipe, and the first branch pipe is connected to the pickling tank.

[0024] The sliding pin is also fixed to the pipe sleeve, the pipe sleeve sealing sleeve is arranged outside the shunt pipe and moves along the shunt pipe, and the pipe sleeve blocks the notch.

[0025] Preferably, the sleeve is fixed to a driving pin, the driving pin is arranged in a guide slot and moves along the guide slot, the guide slot is provided on a driving plate, a plurality of handles are mounted on the driving plate, the driving plate is rotatably mounted in an annular guide rail, and the annular guide rail is fixed to the pickling box.

[0026] Preferably, the feeding mechanism includes legs, a plurality of the legs are fixed to a silo, the silo is located above the pickling box and is coaxial with the pickling box, quartz sand is contained in the silo, the silo is fixed to a first motor via a plurality of mounting brackets, and the first motor is connected to the PLC controller.

[0027] A plurality of push slurries are fixed to the output end of the first motor. The push slurries are arranged in a material distribution box and rotate along the material distribution box. The material distribution box is fixed to the material bin, and a plurality of material discharge holes are provided at the bottom of the material distribution box.

[0028] Preferably, the first liquid inlet pipe is fixed to the reflux main pipe, a delivery pump is installed on the reflux main pipe, the delivery pump is connected to the PLC controller, the reflux main pipe is fixed to the first liquid outlet pipe, and the first liquid outlet pipe is connected to the separation barrel.

[0029] A ball valve is installed at the bottom of the separation barrel, a filter layer is installed in the middle of the separation barrel, the separation barrel is fixed to the third liquid inlet pipe, the third liquid inlet pipe is fixed to the main drainage pipe, the main drainage pipe is respectively fixed to several drainage branch pipes, and the drainage branch pipe is fixed to the second branch pipe.

[0030] Preferably, the second liquid inlet pipe is fixed to the addition pipe, the addition pipe is fixed to the second liquid outlet pipe, the second liquid outlet pipe is fixed to and communicated with the barrel, the barrel is fixed to the second motor, and the second motor is connected to the PLC controller.

[0031] The output end of the second motor is fixed to the screw, the screw is threadedly connected to the screw sleeve, the screw sleeve is fixed to the piston, and the piston is sealed and arranged in the barrel and moves along it.

[0032] Preferably, a plurality of branch pipes are evenly fixed and connected to the side surface of the circulation pipe along its length direction, and each of the branch pipes is fixedly connected and connected to the pickling tank respectively.

[0033] Preferably, the guide slot hole includes a first arc segment, a connecting segment, and a second arc segment, the first arc segment is connected to the connecting segment, the connecting segment is connected to the second arc segment, the trajectory shapes of the first arc segment and the second arc segment are circular arcs, and the centers of the trajectories of the two coincide, and the trajectory radius of the first arc segment is greater than the trajectory radius of the second arc segment.

[0034] Preferably, the contour shape of the material distribution box is disc-shaped, and the material discharge hole is opened at a peripheral position of the bottom of the material distribution box.

[0035] After adopting the above technical solution, the beneficial effects of the present invention are:

[0036] 1. Use a circulating pump to circulate the mixed liquid in the pickling process so that the surface of the quartz sand is fully in contact with the pickling liquid, ensuring better pickling effect and higher pickling efficiency.

[0037] 2. Use the method of adding quartz sand material evenly to avoid the accumulation of quartz sand in the pickling box, ensure the uniform distribution of quartz sand particles in the pickling liquid, and improve the pickling efficiency.

[0038] 3. The pickling liquid is recycled by using a circulation mechanism, which improves the utilization rate of the pickling liquid and effectively reduces the cost of processing the pickling liquid.

[0039] 4. Use the pH adjustment mechanism to adjust the pH value of the pickling solution in the pickling box at any time, so that the pH value of the pickling solution during the reaction process is maintained within the target range, thereby promoting the rapid progress of pickling and improving the efficiency of pickling. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 This is the installation and operation diagram of the quartz sand pickling equipment;

[0042] Figure 2 It is the main view of the pickling mechanism;

[0043] Figure 3 is along Figure 2 Centerline cross-section view;

[0044] Figure 4 for Figure 3 A partial enlarged view of

[0045] Figure 5 yes Figure 2 Isometric drawing from the first perspective;

[0046] Figure 6 for Figure 5 A partial enlarged view of

[0047] Figure 7 It is a partially cutaway stereoscopic view of the feeding mechanism;

[0048] Figure 8 This is a schematic diagram of the installation of some parts of the circulation mechanism;

[0049] Fig. 9 This is a schematic diagram of the installation of some parts of the pH adjustment mechanism.

[0050] Description of reference numerals:

[0051] 100-pickling mechanism, 101-pickling box, 102-liquid level sensor, 103-acid-base meter, 104-weighing module, 105-circulation pipeline, 106-diversion pipeline, 107-circulation pump, 108-first liquid inlet pipe, 109-second liquid inlet pipe;

[0052] 110 - switching part, 111 - circulation main pipe, 112 - branch pipe, 113 - notch, 114 - sliding pin, 115 - plug, 116 - pipe sleeve, 117 - first branch pipe, 118 - second branch pipe;

[0053] 120-control part, 121-driving pin, 122-guide slot, 122a-first arc segment, 122b-connecting segment, 122c-second arc segment, 123-driving plate, 124-annular guide rail, 125-handle;

[0054] 200-feeding mechanism, 201-leg, 202-bin, 203-first motor, 204-mounting bracket, 205-slurry pusher, 206-feeding box, 207-feeding hole;

[0055] 300-circulation mechanism, 301-reflux main pipe, 302-delivery pump, 303-first liquid outlet pipe, 304-separation barrel, 305-ball valve, 306-filter layer, 307-third liquid inlet pipe, 308-drainage main pipe, 309-drainage branch pipe;

[0056] 400-pH adjustment mechanism, 401-addition tube, 402-second liquid outlet tube, 403-barrel, 404-second motor, 405-screw, 406-screw sleeve, 407-piston;

[0057] 500-PLC controller. DETAILED DESCRIPTION

[0058] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0059] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0060] The embodiment of the present invention provides a quartz sand pickling device, which automatically adjusts the pH value of the pickling solution to increase the pickling speed of the quartz sand; through the recycling of the pickling solution, the material consumption is reduced and the production cost is reduced; through the flow flushing method, the effective contact between the pickling solution and the quartz sand is increased, and the pickling effect of the quartz sand is improved; through the total amount control and uniform material distribution method, a large amount of quartz sand is avoided. Accumulation, the pickling efficiency of the quartz sand is improved.

[0061] See also Figure 1 , 2 3. The quartz sand pickling equipment includes a pickling mechanism 100, a feeding mechanism 200, a circulation mechanism 300, a pH adjustment mechanism 400 and a PLC controller 500.

[0062] The pickling mechanism 100 includes a pickling box 101 . A feeding mechanism 200 is installed directly above the pickling box 101 . The feeding mechanism 200 is coaxially arranged with the pickling box 101 . The feeding mechanism 200 is used to uniformly add quartz sand material into the pickling box 101 .

[0063] A liquid level sensor 102 is fixedly installed on the inner surface of the top of the pickling tank 101. The liquid level sensor 102 is used to measure the liquid level in the pickling tank 101 in real time. A pH meter 103 is installed on the side of the pickling tank 101. The probe of the pH meter 103 seals through the side wall of the pickling tank 101 and is arranged in the pickling tank 101. The pH meter 103 is used to measure the pH value of the mixed liquid in the pickling tank 101 in real time. A weighing module 104 is installed at the bottom of the pickling tank 101. The weighing module 104 is used to measure the weight of the pickling tank 101 in real time.

[0064] One side of the top of the pickling box 101 is fixedly connected and communicated with the second liquid inlet pipe 109, and the second liquid inlet pipe 109 is connected and communicated with the pH adjustment mechanism 400. The pH adjustment mechanism 400 transports an acidic reagent into the pickling box 101 through the second liquid inlet pipe 109 to adjust the pH value of the pickling solution in the pickling box 101.

[0065] The other side of the top of the pickling tank 101 is fixedly connected and communicated with the first liquid inlet pipe 108, and the first liquid inlet pipe 108 is connected and communicated with the liquid outlet end of the circulation mechanism 300, and the circulation mechanism 300 is used for filtering and circulating the pickling liquid.

[0066] The bottom of the side of the pickling tank 101 is fixedly connected and communicated with the first end of the circulation pipe 105, and the second end of the circulation pipe 105 is fixedly connected to the first port of the circulation pump 107. A switching part 110 is installed on the second port of the circulation pump 107. The switching part 110 can be connected to the middle part of the pickling tank 101 or the liquid inlet end of the circulation mechanism 300. A control part 120 is installed above the switching part 110, and the control part 120 is used to change the connection object of the switching part 110.

[0067] The liquid level sensor 102 , the acid-base meter 103 , the weighing module 104 , the circulation pump 107 , the feeding mechanism 200 , the circulation mechanism 300 , and the pH adjustment mechanism 400 are respectively connected to the PLC controller 500 .

[0068] Among them, the specific working steps of the quartz sand pickling equipment are:

[0069] First, the PLC controller 500 controls the circulation mechanism 300 to add circulating pickling liquid into the pickling tank 101 through the first liquid inlet pipe 108. The liquid level sensor 102 measures the liquid level of the pickling liquid in the pickling tank 101 in real time. When the liquid level reaches a preset height value, the PLC controller 500 controls the circulation mechanism 300 to stop adding circulating pickling liquid into the pickling tank 101.

[0070] Secondly, the PLC controller 500 controls the feeding mechanism 200 to evenly add the quartz sand material to be pickled into the pickling box 101, and the weighing module 104 measures the weight of the mixed liquid in the pickling box 101 in real time. When the weight of the mixed liquid reaches a preset weight value, the PLC controller 500 controls the feeding mechanism 200 to stop adding the quartz sand material into the pickling box 101.

[0071] Then, the operator connects the switching part 110 with the pickling tank 101 through the operation control part 120, and the PLC controller 500 controls the circulation pump 107 to run in the forward direction. At this time, the mixed liquid in the pickling tank 101 flows back to the bottom of the pickling tank 101 through the switching part 110, the circulation pump 107, and the circulation pipe 105, and then washes the quartz sand settled at the bottom upward, forming a flow situation, so that the pickling effect of the pickling liquid on the quartz sand is better.

[0072] Again, the pH meter 103 measures the pH value of the mixed liquid in the pickling box 101 in real time. When the pH value is greater than the preset pH value, the PLC controller 500 controls the pH adjustment mechanism 400 to add an acidic reagent into the pickling box 101 through the second liquid inlet pipe 109 until the pH value of the mixed liquid in the pickling box 101 reaches the preset pH value.

[0073] Finally, when the pH value of the mixed liquid in the pickling tank 101 remains unchanged within a preset time length, it indicates that the quartz sand pickling is completed. At this time, the PLC controller 500 controls the circulation pump 107 to rotate in the opposite direction, and the mixed liquid in the pickling tank 101 flows back to the middle part of the pickling tank 101 through the circulation pipe 105, the circulation pump 107, and the switching part 110. At this time, the operator realizes the change of the connection object of the switching part 110 through the control part 120, that is, the switching part 110 is no longer connected to the middle part of the pickling tank 101, and the switching part 110 is connected to the liquid inlet end of the circulation mechanism 300, thereby transporting the mixed liquid in the pickling tank 101 to the circulation mechanism 300, thereby further realizing the separation of quartz sand and pickling liquid.

[0074] Among them, a number of branch pipes 106 are evenly fixed and connected to the side of the circulation pipe 105 along its length direction. Each branch pipe 106 is fixedly connected and connected to the pickling box 101. The purpose of setting this structure is to enhance the flushing force of the pickling liquid on the quartz sand, increase the fluidity of the quartz sand, and thus improve the pickling efficiency.

[0075] Among them, the structure composed of the circulation pipeline 105, the diversion pipeline 106, the circulation pump 107, and the switching part 110 is symmetrically distributed in several groups about the axis center of the pickling box 101, the purpose of which is to achieve uniform flushing of the quartz sand at the bottom of the pickling box 101 and increase the flow rate of the pickling liquid.

[0076] The circulation pump 107 is a reversible pump, thereby realizing forward and reverse flows of the mixed liquid in the circulation pump 107 .

[0077] like Figure 4 As shown, the switching part 110 includes a circulation main pipe 111, a branch pipe 112, a notch 113, a sliding pin 114, a plug 115, a pipe sleeve 116, a first branch pipe 117, and a second branch pipe 118. The second port of the circulation pump 107 is fixedly connected and communicated with the first end of the circulation main pipe 111, and the second end of the circulation main pipe 111 is fixedly connected and communicated with the middle part of the branch pipe 112.

[0078] A slot 113 is provided on the side wall of the shunt pipe 112 away from the main circulation pipe 111 along its length direction, and a sliding pin 114 capable of moving along the slot 113 is arranged in the slot 113. The first end of the sliding pin 114 is fixedly connected to a plug 115. The plug 115 is arranged in the shunt pipe 112 and can reciprocate along its length direction.

[0079] The first end of the plug 115 can be sealed and overlapped with the first end of the second branch pipe 118, the first end of the second branch pipe 118 is fixedly connected and communicated with the first end of the shunt pipe 112, the second end of the second branch pipe 118 is connected and communicated with the liquid inlet end of the circulation mechanism 300, the second end of the plug 115 can be sealed and overlapped with the first end of the first branch pipe 117, the first end of the first branch pipe 117 is fixedly connected and communicated with the second end of the shunt pipe 112, and the second end of the first branch pipe 117 passes through the side wall in the middle of the pickling tank 101 and communicates with the interior of the pickling tank 101.

[0080] The second end of the sliding pin 114 is fixedly connected to the middle of the sleeve 116 . The sleeve 116 sealing sleeve is arranged on the outside of the shunt pipe 112 and can reciprocate along the length direction thereof. The sleeve 116 always seals and blocks the notch 113 .

[0081] When the first end of the plug 115 is sealed and overlapped with the first end of the second branch pipe 118, the first branch pipe 117 is connected to the circulation pump 107 through the shunt pipe 112 and the circulation main pipe 111. When the second end of the plug 115 is sealed and overlapped with the first end of the first branch pipe 117, the second branch pipe 118 is connected to the circulation pump 107 through the shunt pipe 112 and the circulation main pipe 111. Therefore, by adjusting the position of the plug 115, the connection object of the circulation pump 107 can be switched, thereby effectively controlling the flow direction of the mixed liquid.

[0082] The outer diameters of the first branch pipe 117, the second branch pipe 118 and the diversion pipe 112 are equal, the inner diameters of the first branch pipe 117 and the second branch pipe 118 are equal, the inner diameters of the first branch pipe 117 and the second branch pipe 118 are smaller than the diameter of the plug 115, the diameter of the plug 115 is smaller than the inner diameter of the diversion pipe 112, and chamfers are provided at both ends of the plug 115 to facilitate the plug 115 to seal the first branch pipe 117 and the second branch pipe 118.

[0083] In order to facilitate the simultaneous switching of the positions of several groups of plugs 115, a control unit 120 for driving the plugs 115 to reciprocate is installed above the switching unit 110. Figure 4 , 5 As shown in , 6 , the control unit 120 includes a driving pin 121 , a guide slot 122 , a driving plate 123 , an annular guide rail 124 , and a handle 125 .

[0084] The top of the pipe sleeve 116 is fixedly connected to the first end of the driving pin 121, and the second end of the driving pin 121 is arranged in the guide slot 122 and can move along it. The guide slot 122 is opened on the driving plate 123, and a plurality of handles 125 are evenly fixedly installed on the upper surface of the driving plate 123 along the circumferential direction. The driving plate 123 is rotatably installed in the annular guide rail 124, and the annular guide rail 124 is fixedly connected to the outer surface of the pickling box 101.

[0085] Among them, the guide slot hole 122 includes a first arc segment 122a, a connecting segment 122b, and a second arc segment 122c. The first end of the first arc segment 122a is connected to the first end of the connecting segment 122b, and the second end of the connecting segment 122b is connected to the first end of the second arc segment 122c. The trajectory shapes of the first arc segment 122a and the second arc segment 122c are circular arcs, and the centers of the trajectories of the two coincide. The trajectory radius of the first arc segment 122a is greater than the trajectory radius of the second arc segment 122c.

[0086] The structure composed of the driving pins 121 and the guide slots 122 is symmetrically distributed in a plurality of groups about the axis center of the pickling box 101 , and the number of the groups is equal to the number of the plugs 115 .

[0087] The annular guide rail 124 is coaxially arranged with the pickling box 101 , so the driving plate 123 remains coaxial with the pickling box 101 , so that when the driving plate 123 is rotated, the positions of all the plugs 115 can be adjusted simultaneously.

[0088] When the operator pushes the drive plate 123 to rotate in the annular guide rail 124 through the handle 125, the guide slot 122 provided on the drive plate 123 limits the position of the drive pin 121. Since the distances from various positions of the track of the guide slot 122 to the axis of the pickling box 101 are different, when the drive plate 123 rotates, the plug 115 is driven to move toward or away from the axis of the pickling box 101, thereby realizing the reciprocating motion of the plug 115 along the length direction of the diverter pipe 112.

[0089] When the driving pin 121 is disposed in the first arc segment 122 a , the plug 115 just seals and blocks the second branch pipe 118 . When the driving pin 121 is disposed in the second arc segment 122 c , the plug 115 just seals and blocks the first branch pipe 117 .

[0090] In order to avoid the accumulation of quartz sand during the pickling process, the quartz sand is added evenly through the feeding mechanism 200, such as Figure 1 , 7 As shown, the feeding mechanism 200 includes a support leg 201 , a silo 202 , a first motor 203 , a mounting bracket 204 , a slurry pusher 205 , a material distribution box 206 , and a material discharge hole 207 .

[0091] A plurality of legs 201 are fixedly connected to a silo 202. The silo 202 is located directly above the pickling box 101 and is coaxially arranged with the pickling box 101. Quartz sand material is contained in the silo 202. The silo 202 is fixedly connected to a first motor 203 through a plurality of mounting brackets 204. The first motor 203 is connected to a PLC controller 500. A plurality of slurry pushers 205 are evenly fixed along the circumference at the output end of the first motor 203. The slurry pushers 205 are arranged in a distribution box 206 and can rotate along the distribution box 206. The distribution box 206 is fixedly connected and communicated with the bottom of the silo 202. A plurality of discharge holes 207 are evenly opened along the circumference on the bottom plate of the distribution box 206.

[0092] Among them, the trajectory shape of the pushing slurry 205 is arc-shaped, and its purpose is to push the quartz sand material in the middle position of the dividing box 206 outward along the upper surface of the bottom plate of the dividing box 206 and flatten it when the pushing slurry 205 rotates, so that the quartz sand can fall downward evenly through the discharge hole 207.

[0093] Among them, the contour shape of the silo 202 is an inverted cone, so that the materials in the silo 202 are gathered at its center position. When the slurry pushing 205 rotates, the quartz sand in the middle is smoothly pushed to slide outward to achieve material dropping. Conversely, when the slurry pushing 205 does not rotate, the quartz sand in the silo 202 cannot slide outward to achieve material dropping, thereby achieving precise control of the amount of material added.

[0094] In order to further control the accuracy of material addition, the contour shape of the dividing box 206 is set to be a disc shape, that is, the horizontal height of the center position of the dividing box 206 is lower than the horizontal height of the peripheral position of the dividing box 206, and the opening position of the discharge hole 207 is located at the peripheral position of the dividing box 206. Its function is that when the slurry pushing 205 does not rotate, the material stored in the silo 202 is difficult to reach the peripheral position of the dividing box 206, thereby avoiding the automatic sliding of the material.

[0095] When it is necessary to add quartz sand to the pickling box 101, the PLC controller 500 controls the first motor 203 to drive the push slurry 205 to rotate, and the push slurry 205 pushes the quartz sand in the middle position of the bottom of the silo 202 outward. When the quartz sand is pushed to the peripheral position of the dividing box 206, it slides downward through a plurality of discharge holes 207 opened on the bottom plate of the dividing box 206, so as to be evenly added to the pickling box 101. Conversely, when it is necessary to stop adding materials, the push slurry 205 stops rotating. At this time, the quartz sand in the middle position of the silo 202 is difficult to reach the peripheral position of the dividing box 206, and thus cannot slide into the pickling box 101 through the discharge holes 207.

[0096] In order to facilitate the recycling of pickling solution, Figure 1 , 8 As shown, the circulation mechanism 300 includes a reflux main pipe 301 , a delivery pump 302 , a first liquid outlet pipe 303 , a separation barrel 304 , a ball valve 305 , a filter layer 306 , a third liquid inlet pipe 307 , a discharge main pipe 308 , and a discharge branch pipe 309 .

[0097] The first liquid inlet pipe 108 is fixedly connected to the first end of the reflux main pipe 301. A delivery pump 302 is installed on the reflux main pipe 301. The delivery pump 302 is connected to the PLC controller 500. The second end of the reflux main pipe 301 is fixed to the first end of the first liquid outlet pipe 303. The second end of the first liquid outlet pipe 303 passes through the top of the separation barrel 304 and is arranged in the separation barrel 304. A ball valve 305 is installed at the bottom of the separation barrel 304. A filter layer 306 is coaxially fixed in the middle of the separation barrel 304. The height of the filter layer 306 is lower than the second end of the first liquid outlet pipe 303. The filter layer 306 can achieve filtering and separation of pickling liquid and quartz sand. The lower side of the separation barrel 304 is fixedly connected to the first end of the third liquid inlet pipe 307. The second end of the third liquid inlet pipe 307 is fixedly connected to the drainage main pipe 308. The drainage main pipe 308 is respectively fixedly connected to the first ends of a plurality of drainage branch pipes 309. The second end of the drainage branch pipe 309 is fixedly connected to the second end of the second branch pipe 118.

[0098] After the pickling of the quartz sand in the pickling tank 101 is completed, the PLC controller 500 controls the circulation pump 107 to reverse. At this time, the staff switches the position of the plug 115 by rotating the driving plate 123, so that the plug 115 seals and blocks the first branch pipe 117, and the mixed liquid in the pickling tank 101 passes through the circulation pipe 105, the circulation pump 107, the circulation main pipe 111, the branch pipe 112, the second branch pipe 118, the drainage branch pipe 309, the drainage main pipe 308, and the third liquid inlet pipe 309. 07 flows into the separation barrel 304, the pickling liquid can pass through the filter layer 306 to reach the upper part of the separation barrel 304, while the quartz sand cannot pass through the filter layer 306 and remains in the lower part of the separation barrel 304, the pickling liquid in the upper part of the separation barrel 304 can be transported to the pickling box 101 through the first liquid outlet pipe 303, the delivery pump 302, and the reflux main pipe 301 to complete the recycling, and the quartz sand remaining in the lower part of the separation barrel 304 can be discharged outward through the ball valve 305 at the bottom of the separation barrel 304.

[0099] As a further explanation of the present invention, Figure 1 , 9 As shown, the pH adjustment mechanism 400 includes an addition tube 401, a second liquid outlet tube 402, a barrel 403, a second motor 404, a screw 405, a screw sleeve 406, and a piston 407. The second liquid inlet tube 109 is fixedly connected to the first end of the addition tube 401, the second end of the addition tube 401 is fixedly connected to the first end of the second liquid outlet tube 402, the second end of the second liquid outlet tube 402 is fixedly connected to the side wall of the first end of the barrel 403 and is connected to the inside of the barrel 403. An acidic reagent is contained in the barrel 403, the second end of the barrel 403 is fixedly connected to the second motor 404, and the second motor 404 is connected to the PLC controller 500.

[0100] The output end of the second motor 404 is coaxially fixed with the first end of the screw 405, the screw 405 is arranged in the screw sleeve 406 and is threadedly connected to the inner wall of the screw sleeve 406, the screw sleeve 406 is arranged inside the barrel 403, and the end of the screw sleeve 406 away from the second motor 404 is coaxially fixed with the piston 407, and the piston 407 is sealed and arranged in the barrel 403 and moves along it.

[0101] Among them, the cross-sectional shape of the piston 407 is square, and the cross-sectional shape of the inner surface of the barrel 403 is a square that matches the cross-sectional shape of the piston 407. The purpose is to guide the barrel 403 to the piston 407 so that the piston 407 can only slide along the length direction of the barrel 403.

[0102] When the pH value in the pickling tank 101 is higher than the preset pH value, the PLC controller 500 controls the second motor 404 to drive the screw 405 to rotate, and through the threaded connection between the screw 405 and the screw sleeve 406, pushes the screw sleeve 406 and the piston 407 to slowly move toward the side away from the second motor 404, thereby squeezing the acidic reagent inside the barrel 403, so that it flows into the pickling tank 101 through the second liquid outlet pipe 402 and the addition pipe 401, thereby adjusting the pH value in the pickling tank 101.

[0103] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quartz sand pickling device, comprising a pickling mechanism (100), characterized in that: The pickling mechanism (100) comprises a pickling box (101), and a feeding mechanism (200) is installed directly above the pickling box (101), and the feeding mechanism (200) is used to add quartz sand into the pickling box (101); A liquid level sensor (102) is installed on the top of the pickling tank (101), and the liquid level sensor (102) is used to measure the height of the liquid level in the pickling tank (101); a pH meter (103) is installed on the side of the pickling tank (101), and a probe of the pH meter (103) is arranged in the pickling tank (101), and the pH meter (103) is used to measure the pH value of the mixed liquid in the pickling tank (101); a weighing module (104) is installed on the bottom of the pickling tank (101), and the weighing module (104) is used to measure the weight of the pickling tank (101); The pickling tank (101) is fixed to a second liquid inlet pipe (109), the second liquid inlet pipe (109) is connected to a pH adjustment mechanism (400), and the pH adjustment mechanism (400) is used to adjust the pH value of the mixed liquid in the pickling tank (101); The pickling tank (101) is fixed to a first liquid inlet pipe (108), the first liquid inlet pipe (108) is connected to a circulation mechanism (300), and the circulation mechanism (300) is used for circulating the pickling liquid; The bottom of the pickling tank (101) is fixed to the first end of the circulation pipe (105), the second end of the circulation pipe (105) is fixed to the first port of the circulation pump (107), a switching part (110) is installed on the second port of the circulation pump (107), the switching part (110) can be connected to the pickling tank (101) or the circulation mechanism (300), and a control part (120) is installed on the top of the switching part (110), the control part (120) is used to change the communication object of the switching part (110); The liquid level sensor (102), the acid-base meter (103), the weighing module (104), the circulation pump (107), the feeding mechanism (200), the circulation mechanism (300), and the pH adjustment mechanism (400) are respectively connected to the PLC controller (500); The switching part (110) comprises a circulation main pipe (111), the second port of the circulation pump (107) is fixed to the circulation main pipe (111), and the circulation main pipe (111) is fixed to the middle part of the diversion pipe (112); A notch (113) is provided on a side wall of the diverter pipe (112), a sliding pin (114) is arranged in the notch (113) and moves along the notch, the sliding pin (114) is fixedly connected to a plug (115), and the plug (115) is arranged in the diverter pipe (112) and moves along the notch; The plug (115) can be sealed and overlapped with the second branch pipe (118), the second branch pipe (118) is fixed to the flow dividing pipe (112), and the second branch pipe (118) is connected to the liquid inlet end of the circulation mechanism (300); The plug (115) can also be sealed and overlapped with the first branch pipe (117), and the first branch pipe (117) is connected to the pickling tank (101); The sliding pin (114) is also fixed to a pipe sleeve (116); a sealing sleeve of the pipe sleeve (116) is arranged outside the flow dividing pipe (112) and moves along the pipe sleeve; the pipe sleeve (116) blocks the notch (113); The specific operation steps of the pickling equipment are: S1, the PLC controller (500) controls the circulation mechanism (300) to add circulating pickling liquid into the pickling tank (101) until the liquid level reaches a preset height value; S2, the PLC controller (500) controls the feeding mechanism (200) to add quartz sand into the pickling box (101) until the total weight of the pickling box (101) reaches a preset weight value; S3, the operator connects the switching unit (110) with the pickling tank (101), and the PLC controller (500) controls the circulation pump (107) to run in the forward direction; S4, the PLC controller (500) controls the pH adjustment mechanism (400) to add an acidic reagent into the pickling tank (101) until the pH value in the pickling tank (101) is adjusted to reach a preset pH value; S5. The operator connects the switching unit (110) with the circulation mechanism (300), and the PLC controller (500) controls the circulation pump (107) to run in the reverse direction.

2. The quartz sand pickling equipment according to claim 1, characterized in that: The pipe sleeve (116) is fixed to a driving pin (121), the driving pin (121) is arranged in a guide slot (122) and moves along the guide slot (122), the guide slot (122) is provided on a driving plate (123), a plurality of handles (125) are installed on the driving plate (123), the driving plate (123) is rotatably installed in an annular guide rail (124), and the annular guide rail (124) is fixed to the pickling box (101).

3. The quartz sand pickling equipment according to claim 1, characterized in that: The feeding mechanism (200) comprises legs (201), a plurality of the legs (201) being fixed to a silo (202), the silo (202) being located above the pickling tank (101) and being coaxial with the pickling tank (101), the silo (202) containing quartz sand, the silo (202) being fixed to a first motor (203) via a plurality of mounting brackets (204), and the first motor (203) being connected to the PLC controller (500); A plurality of slurry pushers (205) are fixed to the output end of the first motor (203); the slurry pushers (205) are arranged in a material distribution box (206) and rotate along the material distribution box (206); the material distribution box (206) is fixed to and communicated with the bottom of the silo (202); and a plurality of material discharge holes (207) are provided at the bottom of the material distribution box (206).

4. The quartz sand pickling equipment according to claim 1, characterized in that: The first liquid inlet pipe (108) is fixed to the reflux main pipe (301), a delivery pump (302) is installed on the reflux main pipe (301), the delivery pump (302) is connected to the PLC controller (500), the reflux main pipe (301) is fixed to the first liquid outlet pipe (303), and the first liquid outlet pipe (303) is connected to the upper part of the separation barrel (304); A ball valve (305) is installed at the bottom of the separation barrel (304), a filter layer (306) is installed in the middle of the separation barrel (304), the separation barrel (304) is fixed to the third liquid inlet pipe (307), the third liquid inlet pipe (307) is fixed to the main drainage pipe (308), the main drainage pipe (308) is respectively fixed to a plurality of drainage branch pipes (309), and the drainage branch pipes (309) are fixed to the second branch pipe (118).

5. The quartz sand pickling equipment according to claim 1, characterized in that: The second liquid inlet pipe (109) is fixed to the addition pipe (401), the addition pipe (401) is fixed to the second liquid outlet pipe (402), the second liquid outlet pipe (402) is fixed to and communicates with the barrel (403), the barrel (403) is fixed to the second motor (404), and the second motor (404) is connected to the PLC controller (500); The output end of the second motor (404) is fixed to the screw (405), the screw (405) is threadedly connected to the screw sleeve (406), the screw sleeve (406) is fixed to the piston (407), and the piston (407) is sealed and arranged in the barrel (403) and moves along it.

6. The quartz sand pickling equipment according to claim 2, characterized in that: A plurality of branch pipes (106) are evenly fixed and connected to the side surface of the circulation pipe (105) along its length direction, and each branch pipe (106) is fixedly connected and connected to the pickling tank (101).

7. The quartz sand pickling equipment according to claim 2, characterized in that: The guide slot hole (122) comprises a first arc segment (122a), a connecting segment (122b), and a second arc segment (122c); the first arc segment (122a) is connected to the connecting segment (122b), and the connecting segment (122b) is connected to the second arc segment (122c); the trajectory shapes of the first arc segment (122a) and the second arc segment (122c) are circular arcs, and the centers of the two trajectories coincide; the trajectory radius of the first arc segment (122a) is greater than the trajectory radius of the second arc segment (122c).

8. The quartz sand pickling equipment according to claim 3, characterized in that: The outline shape of the material distribution box (206) is disc-shaped, and the material discharge hole (207) is opened at a peripheral position of the bottom of the material distribution box (206).

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