Quartz sand processing and screening device

Abstract

The embodiment of the invention provides a quartz sand processing and screening device, and relates to the technical field of quartz sand processing. The quartz sand processing and screening device comprises a screening box, the top of the screening box communicates with a feeding hopper with a blocking plate, the rear side of the screening box is fixedly connected with a crushing box, and a discharging channel is formed between the screening box and the crushing box; a discharging plate used in cooperation with the crushing box is obliquely fixed to the side, close to the discharging channel, of the screening box, a fixing cover is fixedly connected to the top of the crushing box, an outer side cover is fixedly connected to the outer side of the screening box and the outer side of the crushing box, and a pre-screening assembly is arranged at the top of an inner cavity of the screening box. A centrifugal assembly used in cooperation with the pre-screening assembly is arranged at the bottom of an inner cavity of the screening box, and a mashing assembly is arranged in an inner cavity of the crushing box. On the basis of the energy-saving condition, the efficient screening effect of quartz sand materials is achieved by adopting the mode of combining a first rotary screen, a second centrifugal screen and hammering recovery.

Description

Technical Field

[0001] The invention belongs to the technical field of quartz sand processing, and in particular relates to a quartz sand processing and screening device. Background Art

[0002] Quartz sand is quartz particles made from quartz stone through crushing, screening and other processes. Quartz stone is a non-metallic mineral whose mineral component is mainly silicon dioxide. Quartz sand can be divided into ordinary quartz sand, refined quartz sand, high-purity quartz sand, fused quartz sand and silicon micropowder according to its quality. When producing quartz sand materials, quartz sand of different particle sizes needs to be screened according to the production process requirements of quartz sand products.

[0003] In the prior art (Patent No. CN221133171 U, Patent Name: A Screening Device for High-Purity Quartz Sand Processing), high-purity quartz sand is added from a feed hopper to a screening box. The rotation of a connecting column drives a stirring rod, which stirs the quartz sand, allowing the filter to better filter the quartz sand, thereby removing large particles from the quartz sand. In the process of implementing this technical solution, it was discovered that the prior art has at least the following problems:

[0004] During the screening of quartz sand materials, they are basically screened by fixed screens. In this process, although there is a stirring device to stir the quartz sand materials to prevent the mesh from being blocked, over time, no matter how the stirring equipment stirs, the quartz sand crushed materials embedded in the mesh will not fall off. Based on energy-saving conditions, it is not possible to use a combination of a rotating first screen, a centrifugal second screen and hammer recovery to achieve efficient screening of quartz sand materials, which is not worth the effort. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems in the prior art, which is that it is not possible to achieve efficient screening of quartz sand materials by combining a rotary screen, a centrifugal screen, and hammer recovery under energy-saving conditions. To this end, the present application proposes a quartz sand processing and screening device.

[0006] To achieve the above object, the specific technical solutions of the present invention are as follows:

[0007] A quartz sand processing and screening device comprises a screening box, the top of which is connected to a feeding hopper with a blocking plate, and a crushing box fixedly connected to the rear side of the screening box, a material discharge channel is provided between the screening box and the crushing box, and the outer sides of the screening box and the crushing box are both connected to material discharge ports with blocking plates;

[0008] A blanking plate used in conjunction with the crushing box is obliquely fixed to one side of the screening box close to the blanking channel, and a fixed cover is fixedly connected to the top of the crushing box, and an outer cover is fixedly connected to the outer sides of the screening box and the crushing box. A pre-screening assembly is provided on the top of the inner cavity of the screening box, and the pre-screening assembly includes a rotating shaft rotating on the top of the screening box;

[0009] A centrifugal assembly used in conjunction with the pre-screening assembly is provided at the bottom of the inner cavity of the screening box, and a pounding assembly is provided in the inner cavity of the crushing box. The centrifugal assembly includes a first main synchronous wheel fixed to one end of the rotating shaft, and the pounding assembly includes a second main synchronous wheel fixed to the other end of the rotating shaft.

[0010] Preferably: the pre-screen assembly also includes a material box circumferentially fixed on the rotating shaft, and a pre-screen is embedded in the material box, a vibration motor is embedded in the middle of the pre-screen, and the end of the rotating shaft close to the second main synchronous wheel is fixedly connected to the secondary bevel gear, the front of the screening box is fixedly connected to the drive motor, and the output shaft of the drive motor is fixedly connected to the electric push rod through a coupling, and the top of the electric push rod is fixedly connected to the main bevel gear used in conjunction with the secondary bevel gear.

[0011] Preferably: the centrifugal assembly also includes a first slave synchronous wheel on the outside of the first main synchronous wheel driven by a synchronous belt, and the inner cavity of the first slave synchronous wheel is fixedly connected to a short rotating rod that rotates with the outer cover, the inner side of the short rotating rod is fixedly connected to the first driving gear, and the inner side of the first driving gear is meshed with the first driven gear, the first driven gear is fixedly connected to the screening bucket through a connecting shaft, and the bottom of the screening bucket is fixedly connected to an annular slide, and the bottom of the inner cavity of the screening box is provided with an annular groove that slides with the annular slide.

[0012] Preferably: the pounding assembly also includes a second slave synchronous wheel driven by a synchronous belt on the outside of the second main synchronous wheel, and the inner side of the second slave synchronous wheel is fixedly connected to a differential gear through a fixed rod, the bottom of the differential gear is meshed with a ring gear, and planetary gears are meshed around the ring gear, the outer side of the planetary gear is fixedly connected to a cam through a fixed rod, and the bottom of the cam is slidably connected to a push rod, and the bottom of the push rod is fixedly connected to a main pounding head used in conjunction with the crushing box.

[0013] Preferably, a rotation speed sensor is embedded on the outer side of the rotating shaft close to the auxiliary bevel gear, and a guide plate with a hollow design is fixed obliquely on the side of the screening box away from the discharge channel.

[0014] Preferably, a ratchet is fixedly connected to the inner side of the rotating shaft close to the first main synchronous wheel, and pawls are clamped around the ratchet, and a limit spring is fixedly connected to the outer side of the pawl.

[0015] Preferably, a material guide rack used in conjunction with the annular chute is fixedly connected to the bottom of the inner cavity of the screening box, and material guide vanes are fixedly connected to all four sides of the annular slide.

[0016] Preferably, a sliding sleeve that slidably cooperates with the push rod is embedded around the top of the crushing box, and a return spring that fixedly cooperates with the sliding sleeve and the main ramming head is sleeved on the lower surface of the push rod.

[0017] Preferably, the inner side of the main ramming head is fixedly connected to the auxiliary ramming head via a bent rod, and the main ramming head and the auxiliary ramming head are distributed in a circumferentially equidistant state along the central axis of the crushing box.

[0018] Preferably, the top of the crushing box is fixedly connected to an annular guide rail, and the inner cavity of the annular guide rail is slidably connected to a limiting slide seat fixedly matched with the gear ring.

[0019] The quartz sand processing and screening device of the present invention has the following advantages:

[0020] 1. This quartz sand processing and screening device first forces the circumferentially symmetrically distributed quartz sand material to rotate under the dual effects of the falling impact force of the quartz sand material in the quartz sand box and its own gravity, and the quartz sand material in the rotating quartz sand box is pre-rotated and screened through the pre-screen. The small particles of quartz sand material fall into the screening barrel in advance through the guide plate. At the same time, the vibration motor vibrates the quartz sand material in each group of quartz sand boxes through the pre-screen to prevent the quartz sand material from clogging the pre-screen, and also speed up the feeding speed of the small particle pre-screen. The large-particle quartz sand material is discharged from the return feed box through the feed channel by the feed plate into the crushing box. At this point, the non-electrically controlled power pre-screening work is completed. If the speed of the rotating shaft is lower than the preset range value of the speed sensor, the electric push rod is first controlled to adjust the meshing stroke between the main bevel gear and the secondary bevel gear to the right position, and then the drive motor is controlled to start the intervention and drive the rotating shaft to rotate electrically through the meshed main bevel gear and secondary bevel gear. Similarly, the rotating shaft drives the feed box to rotate in the direction of the quartz sand material, and performs electric-controlled power pre-screening on large and small particles of quartz sand materials, which also plays an energy-saving role.

[0021] 2. This quartz sand processing and screening device, then, first drives the short rotating rod on the first slave synchronous wheel to rotate through the synchronous belt on the first main synchronous wheel, and the short rotating rod drives the first driven gear on the first driving gear to rotate accordingly, and the annular slide and the annular slide groove provide rotation support for the screening barrel. Then, the first driven gear drives the screening barrel to rotate centrifugally through the connecting shaft, and the small particles of quartz sand material falling into the screening barrel are centrifugally screened again, completing the secondary screening of the quartz sand material, making the obtained quartz sand material finer, and improving the screening efficiency of the quartz sand material.

[0022] 3. This quartz sand processing and screening device first rotates the differential gear on the second slave synchronous wheel through the synchronous belt on the second main synchronous wheel. The differential gear drives the ring gear to rotate linearly. The ring gear drives the cams on the four sets of planetary gears to rotate synchronously. The four sets of cams drive the main ramming heads and auxiliary ramming heads on the four push rods to alternately hammer and crush the large-particle quartz sand materials reaching the crushing box. The crushed quartz sand materials are then poured back into the material box in the screening box through the feeding hopper to complete the recycling and screening work, thereby further improving the screening efficiency of the quartz sand materials.

[0023] Prior to this, the gear ring first drives the second driven gear on the second driving gear to rotate successively through the long rotating rod, and the second driven gear drives the reciprocating screw to rotate accordingly. The reciprocating screw drives the insertion frame to slide back and forth in the limiting horizontal groove through the screw sleeve, and the insertion frame drives the insertion rod to insert back and forth in the feeding hopper, which not only inserts and crushes the quartz sand material poured into the feeding hopper, but also prevents large-volume quartz sand material from accumulating in the feeding hopper, which is beneficial to the unloading of quartz sand material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a structural schematic diagram of a quartz sand processing and screening device of the present invention;

[0026] Figure 2 This is a rear view of the structure of a quartz sand processing and screening device of the present invention;

[0027] Figure 3 This is a structural cross-sectional view of a quartz sand processing and screening device of the present invention;

[0028] Figure 4 This is an internal view of the structure of a quartz sand processing and screening device of the present invention;

[0029] Figure 5 This is a diagram showing the initial state of the pre-screening assembly structure of the present invention;

[0030] Figure 6 This is a diagram showing the electrical control state of the pre-screening assembly structure of the present invention;

[0031] Figure 7 This is a bottom view of the material box structure of the present invention;

[0032] Figure 8This is a diagram showing the initial state of the pre-screening component and the centrifugal component structure of the present invention;

[0033] Figure 9 This is a diagram showing the electrical control state of the pre-screening assembly and the centrifugal assembly structure of the present invention;

[0034] Figure 10 This is a diagram showing the initial state of the pre-screening component and the crushing component structure of the present invention;

[0035] Figure 11 This is a diagram showing the electrical control state of the pre-screening component and the crushing component structure of the present invention;

[0036] Figure 12 This is an exploded view of the crushing assembly structure of the present invention;

[0037] Figure 13 This is a diagram showing the initial state of the pre-screening component, the crushing component and the interlacing component structures of the present invention;

[0038] Figure 14 This is a diagram showing the electrical control state of the pre-screening component, the crushing component, and the interlacing component structures of the present invention;

[0039] Figure 15 This is a structural sectional view of a quartz sand processing and screening device of the present invention.

[0040] Explanation of the markings in the figure: 1. Screening box; 2. Feeding hopper; 3. Crushing box; 4. Fixed cover; 5. Outer cover; 61. Rotating shaft; 62. Material box; 63. Pre-screen; 64. Vibrating motor; 65. Secondary bevel gear; 66. Drive motor; 67. Electric push rod; 68. Main bevel gear; 71. First main synchronous gear; 72. First slave synchronous gear; 73. Short rotating rod; 74. First driving gear; 75. First driven gear; 76. Screening barrel; 77. Annular slide; 78. Annular chute; 81. Second main synchronous gear; 82. Second slave synchronous gear; 83. Differential gear Wheel; 84, ring gear; 85, planetary gear; 86, cam; 87, push rod; 88, main ramming head; 91, long rotating rod; 92, second driving gear; 93, second driven gear; 94, reciprocating screw; 95, screw sleeve; 96, insertion rack; 97, limit transverse groove; 98, insertion rod; 10, speed sensor; 11, guide plate; 12, ratchet; 13, pawl; 14, limit spring; 15, guide rack; 16, guide blade; 17, sliding sleeve; 18, return spring; 19, auxiliary ramming head; 20, annular guide rail; 21, limit slide; 22, blanking plate. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0042] like Figures 1-15As shown, a quartz sand processing and screening device of the present invention includes a screening box 1, the top of the screening box 1 is connected to a feeding hopper 2 with a blocking plate, and the rear side of the screening box 1 is fixedly connected to a crushing box 3, a material discharge channel is opened between the screening box 1 and the crushing box 3, and the outer sides of the screening box 1 and the crushing box 3 are both connected to a material discharge port with a blocking plate;

[0043] A blanking plate 22 for use with the crushing box 3 is fixed obliquely on one side of the screening box 1 near the material discharge channel, and a fixed cover 4 is fixedly connected to the top of the crushing box 3, and an outer cover 5 is fixedly connected to the outer sides of the screening box 1 and the crushing box 3. A pre-screening assembly is provided on the top of the inner cavity of the screening box 1, and the pre-screening assembly includes a rotating shaft 61 rotating on the top of the screening box 1. According to the rotation speed of the rotating shaft 61, a combination of non-electrically controlled drive and electric control intervention is adopted to perform energy-saving pre-screening of the quartz sand material, which also plays a role in preventing blockage and rapid material discharge during the process.

[0044] The bottom of the inner cavity of the screening box 1 is provided with a centrifugal component used in conjunction with the pre-screening component, and the inner cavity of the crushing box 3 is provided with a crushing component, and the centrifugal component includes a first main synchronous wheel 71 fixed at one end of the rotating shaft 61, which centrifugally screens the small-particle quartz sand material again to complete the secondary screening of the quartz sand material, making the obtained quartz sand material finer and improving the screening efficiency of the quartz sand material, and the crushing component includes a second main synchronous wheel 81 fixed at the other end of the rotating shaft 61, which alternately hammers and crushes the large-particle quartz sand material reaching the crushing box 3, and then pours the crushed quartz sand material back into the screening box 1 through the feeding hopper 2 to complete the recovery and screening work, thereby further improving the screening efficiency of the quartz sand material.

[0045] like Figure 5-Figure 12 As shown, the pre-screen assembly also includes a material box 62 circumferentially fixed on the rotating shaft 61. Under the dual action of the falling impact force of the quartz sand material fed into the material box 62 and its own gravity, the material box 62 with a symmetrical distribution on the circumference is forced to drive the rotating shaft 61 to rotate, and a pre-screen 63 is embedded in the material box 62. The quartz sand material in the rotating material box 62 is pre-rotated and screened through the pre-screen 63, and the small particles of quartz sand material fall onto the screen in advance through the guide plate 11. In the selection barrel 76, a vibration motor 64 is embedded in the middle of the pre-screen 63. The vibration motor 64 vibrates the quartz sand material in each group of the material selection box 62 through the pre-screen 63 to prevent the quartz sand material from clogging the pre-screen 63 and also speed up the discharge speed of the small-particle pre-screen 63. The large-particle quartz sand material remaining on the pre-screen 63 is discharged from the return material selection box 62 by the discharge plate 22 through the discharge channel into the crushing box 3. At this point, the non-electrically controlled power pre-screening work is completed;

[0046] The end of the rotating shaft 61 close to the second main synchronous wheel 81 is fixedly connected to the secondary bevel gear 65, the front of the screening box 1 is fixedly connected to the driving motor 66, and the output shaft of the driving motor 66 is fixedly connected to the electric push rod 67 through a coupling, and the top of the electric push rod 67 is fixedly connected to the main bevel gear 68 used in conjunction with the secondary bevel gear 65. If the speed of the rotating shaft 61 is lower than the preset range value of the speed sensor 10, the electric push rod 67 is first controlled to adjust the meshing stroke between the main bevel gear 68 and the secondary bevel gear 65 to the right position, and then the driving motor 66 is controlled to start the intervention and drive the rotating shaft 61 to rotate electrically through the meshed main bevel gear 68 and the secondary bevel gear 65. Similarly, the rotating shaft 61 drives the material box 62 to rotate in the direction of feeding the quartz sand material, and performs electronically controlled power pre-screening on the quartz sand materials of different sizes, which also plays an energy-saving role.

[0047] A speed sensor 10 is embedded on the outer side of the rotating shaft 61 near the secondary bevel gear 65 to monitor the speed of the rotating shaft 61 in real time so as to drive the motor 66 for electronic control intervention, replacing the non-electrical control method, saving power costs, and a guide plate 11 with a hollow design is fixed on an inclined side of the screening box 1 away from the discharge channel to guide the small-particle quartz sand material screened out by the pre-screen 63.

[0048] The centrifugal assembly also includes a first slave synchronous wheel 72 on the outside of the first main synchronous wheel 71 driven by a synchronous belt, and the inner cavity of the first slave synchronous wheel 72 is fixedly connected to a short rotating rod 73 that rotates with the outer cover 5. The rotating shaft 61 drives the short rotating rod 73 on the first slave synchronous wheel 72 to rotate through the synchronous belt on the first main synchronous wheel 71. The inner side of the short rotating rod 73 is fixedly connected to a first driving gear 74, and the inner side of the first driving gear 74 is meshed with a first driven gear 75. The short rotating rod 73 drives the first driven gear 75 on the first driving gear 74 to rotate accordingly, and the first driven gear 7 5 is fixedly connected to a screening barrel 76 by a connecting shaft, and an annular slide 77 is fixedly connected to the bottom of the screening barrel 76. An annular slide 78 is provided at the bottom of the inner cavity of the screening box 1 to slide with the annular slide 77. The annular slide 77 and the annular slide 78 provide rotational support for the screening barrel 76. Under the cooperation of the annular slide 77 and the annular slide 78, the first driven gear 75 drives the screening barrel 76 to rotate centrifugally through the connecting shaft, and the small particles of quartz sand material falling into the screening barrel 76 are centrifugally screened again, completing the secondary screening of the quartz sand material, making the obtained quartz sand material more delicate, and improving the screening efficiency of the quartz sand material.

[0049] The ratchet 12 is fixedly connected to the inner side of the rotating shaft 61 near the first main synchronous wheel 71, and the ratchet 12 is clamped with a pawl 13 on all four sides. The outer side of the pawl 13 is fixedly connected to the limit spring 14, and the rotating shaft 61 synchronously drives the ratchet 12 to rotate. Under the elastic support of the four limit springs 14 on the four pawls 13, the rotating ratchet 12 drives the four pawls 13 to jump on its teeth, providing a reverse restriction measure for the rotating shaft 61 in the non-electric control and electric control intervention states. The bottom of the inner cavity of the screening box 1 is fixedly connected to a guide rack 15 used in conjunction with the annular chute 78 to prevent the small particles of quartz sand material screened by the screening bucket 76 from accumulating in the corner of the inner cavity of the screening box 1, which plays a role in facilitating cleaning and unloading. The guide blades 16 are fixedly connected to the four sides of the annular slide 77, and the small particles of quartz sand material falling on the guide rack 15 are guided and discharged by the circumferentially distributed guide blades 16 that rotate synchronously with the annular slide 77.

[0050] The crushing assembly also includes a second slave synchronous wheel 82 on the outside of the second main synchronous wheel 81 driven by a synchronous belt, and the inner side of the second slave synchronous wheel 82 is fixedly connected to a differential gear 83 through a fixed rod. The differential gear 83 on the second slave synchronous wheel 82 is driven to rotate by the rotating shaft 61 through the synchronous belt on the second main synchronous wheel 81. The bottom of the differential gear 83 is meshed with a ring gear 84, and the four sides of the ring gear 84 are meshed with planetary gears 85. The outer side of the planetary gear 85 is fixedly connected to a cam 86 through a fixed rod. The differential gear 83 drives the ring gear 84 to rotate linearly. The ring gear 84 drives the cams 86 on the four sets of planetary gears 85 to rotate synchronously, and the bottom of the cam 86 is slidably connected to the push rod 87, and the bottom of the push rod 87 is fixedly connected to the main ramming head 88 used in conjunction with the crushing box 3. The four sets of cams 86 drive the main ramming heads 88 and auxiliary ramming heads 19 on the four push rods 87 to alternately hammer and crush the large-particle quartz sand materials reaching the crushing box 3, and then pour the crushed quartz sand materials into the material box 62 in the screening box 1 through the feeding hopper 2 to complete the recycling and screening work, thereby further improving the screening efficiency of the quartz sand materials.

[0051] The top of the crushing box 3 is embedded with a sliding sleeve 17 that slides with the push rod 87, which plays a role of sliding support for the push rod 87, and the lower surface of the push rod 87 is provided with a return spring 18 that is fixedly matched with the sliding sleeve 17 and the main ramming head 88, which plays an elastic buffer and elastic reset match for the push rod 87 in the reciprocating lifting state. The inner side of the main ramming head 88 is fixedly connected to the auxiliary ramming head 19 through a bent rod, and the main ramming head 88 and the auxiliary ramming head 19 are distributed in a circular equidistant state along the central axis of the crushing box 3, so that the large volume of quartz sand materials falling into the crushing box 3 are fully hammered and crushed, which is beneficial to the recovery and screening of the large volume of quartz sand materials after crushing. The top of the crushing box 3 is fixedly connected with an annular guide rail 20, and the inner cavity of the annular guide rail 20 is slidably connected with a limit slide 21 fixedly matched with the gear ring 84, which plays a role of rotation support for the gear ring 84, thereby improving the stability of the linear rotation of the gear ring 84 to prevent it from skewing and shaking.

[0052] like Figure 13-14 As shown, during the process of pouring the quartz sand material into the screening box 1 through the feeding hopper 2, due to the large volume of quartz sand material mixed therein, it is easy to cause blockage in the feeding hopper 2, affecting the feeding of other quartz sand materials and the subsequent processing operations, resulting in low screening efficiency. The feeding hopper 2 is provided with an interpenetrating component used in conjunction with the pounding component, and the interpenetrating component includes a long rotating rod 91 fixed on the ring gear 84, the top of the long rotating rod 91 is fixedly connected to the second driving gear 92, and the outer side of the second driving gear 92 is meshed with a second driven gear 93, and the second driven gear 93 on the second driving gear 92 is driven by the ring gear 84 through the long rotating rod 91 to rotate successively, and the inner cavity of the second driven gear 93 is fixedly connected to a reciprocating screw rod 94, The second driven gear 93 drives the reciprocating screw 94 to rotate accordingly, and the reciprocating screw 94 is threadedly connected with a screw sleeve 95, and both sides of the screw sleeve 95 are fixedly connected with an insertion frame 96, and the fixed cover 4 is provided with a limiting transverse groove 97 on both sides close to the feeding hopper 2, which slides with the insertion frame 96. The reciprocating screw 94 drives the insertion frame 96 to slide back and forth in the limiting transverse groove 97 through the screw sleeve 95. The outer array of the insertion frame 96 is fixed with an insertion rod 98 that slides with the feeding hopper 2. The insertion frame 96 drives the insertion rod 98 to insert back and forth in the feeding hopper 2, which not only inserts and crushes the quartz sand material poured into the feeding hopper 2, but also prevents large-volume quartz sand material from accumulating in the feeding hopper 2, which is beneficial to the unloading of the quartz sand material.

[0053] The working principle of a quartz sand processing and screening device is as follows: first, the quartz sand material to be screened is poured into the circumferentially symmetrically distributed material box 62 above the screening box 1 through the feeding hopper 2. Under the dual effects of the impact force generated by the falling quartz sand material and its own gravity, the poured quartz sand material drives the rotating shaft 61 to rotate through the circumferentially symmetrically distributed material box 62, and the speed sensor 10 monitors the speed of the rotating shaft 61 in real time. At the same time, the vibration motor 64 is controlled to start and vibrate each group of material boxes 62 through the pre-screen 63. The small particles of quartz sand material falling into the material box 62 pass through the pre-screen 63 through the guide plate 11 and fall into the screening barrel 76. The large volume of quartz sand material still remains in the material box 62 and follows the rotating return material box 62 through the discharge channel at the discharge plate 22 to reach the crushing box 3. The rotating shaft When the speed of 61 meets the preset range value of the speed sensor 10, the rotating shaft 61 drives the secondary bevel gear 65 to idle. If the speed of the rotating shaft 61 does not meet the preset range value of the speed sensor 10, the pouring of quartz sand material into the feeding hopper 2 is first stopped, the electric push rod 67 is controlled to start and drive the main bevel gear 68 to move up and get into engagement with the secondary bevel gear 65, and then the drive motor 66 is controlled to start intervention, and the rotating shaft 61 is driven by the main bevel gear 68 and the secondary bevel gear 65 that are in place to be electrically driven, and then the feeding is resumed. During this period, the rotating shaft 61 synchronously drives the ratchet 12 to rotate. Under the elastic support of the four limit springs 14 on the four pawls 13, the rotating ratchet 12 drives the four pawls 13 to jump on its teeth, providing a reverse restriction measure for the rotating shaft 61 in the non-electrically controlled and electrically intervened states.

[0054] Then, the rotating shaft 61 drives the short rotating rod 73 on the first slave synchronous wheel 72 to rotate through the synchronous belt on the first main synchronous wheel 71, and the short rotating rod 73 drives the first driving gear 74 to rotate accordingly. The first driving gear 74 drives the screening barrel 76 to rotate under the screening box 1 through the connecting shaft on the first driven gear 75. Under the action of centrifugal force, the small particles of quartz sand in the screening barrel 76 are forced to be centrifugally screened again. At the same time, the screening barrel 76 drives the annular slide 77 to rotate synchronously on the annular slide 78. The rotating annular slide 77 drives the guide blade 16 to guide the small particles of quartz sand on the guide frame 15 to the discharge port, and then cleans out the large particles of quartz sand remaining in the screening barrel 76; then, the rotating shaft 61 drives the second slave synchronous wheel 82 on the second main synchronous wheel 81 through the synchronous belt on the second The differential gear 83 rotates, and the annular guide rail 20 and the limit slide 21 provide rotation support for the gear ring 84. The differential gear 83 drives the gear ring 84 to rotate linearly, and the gear ring 84 drives the cams 86 on the four sets of planetary gears 85 to rotate synchronously. The four sets of cams 86 drive the four push rods 87 to slide in the sliding sleeve 17, and the four return springs 18 play elastic buffering and elastic reset cooperation for the four push rods 87. Then, the four sets of cams 86 drive the four sets of main ramming heads 88 and auxiliary ramming heads 19 through the four push rods 87 to alternately hammer and crush the large volume of quartz sand materials arriving in the crushing box 3, and then take out the crushed and refined quartz sand materials from the discharge port for recovery, and then pour them into the circumferentially symmetrically distributed material box 62 above the screening box 1 through the feeding hopper 2. After the large volume of quartz sand materials are refined, they are recycled and screened.

[0055] During this period, the linear ring gear 84 drives the second driving gear 92 to rotate through the long rotating rod 91, and the second driving gear 92 drives the reciprocating screw 94 on the second driven gear 93 to rotate accordingly, and the reciprocating screw 94 drives the screw sleeve 95 to move back and forth horizontally, and the screw sleeve 95 drives the insertion frame 96 to slide back and forth horizontally in the limiting horizontal groove 97, and the insertion frame 96 drives the array-distributed insertion rods 98 to insert back and forth in the feeding hopper 2, and pre-inserts and crushes the quartz sand material passing through the feeding hopper 2 to avoid blockage.

[0056] It should be noted that the specific models and specifications of the vibration motor 64, drive motor 66, electric push rod 67 and speed sensor 10 need to be selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0057] The power supply circuits of the vibration motor 64 , the drive motor 66 , the electric push rod 67 and the speed sensor 10 are clear to those skilled in the art and will not be described in detail here.

[0058] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A quartz sand processing and screening device, comprising a screening box (1), characterized in that: The top of the screening box (1) is connected to a feeding hopper (2) with a blocking plate, and the rear side of the screening box (1) is fixedly connected to a crushing box (3), a material discharge channel is provided between the screening box (1) and the crushing box (3), and the outer sides of the screening box (1) and the crushing box (3) are both connected to material discharge ports with blocking plates; A blanking plate (22) for use with a crushing box (3) is fixed obliquely on one side of the screening box (1) near the blanking channel, and a fixed cover (4) is fixedly connected to the top of the crushing box (3), and an outer cover (5) is fixedly connected to the outer sides of the screening box (1) and the crushing box (3). A pre-screening assembly is provided at the top of the inner cavity of the screening box (1), and the pre-screening assembly includes a rotating shaft (61) that rotates on the top of the screening box (1); The bottom of the inner cavity of the screening box (1) is provided with a centrifugal assembly used in conjunction with the pre-screening assembly, and the inner cavity of the crushing box (3) is provided with a crushing assembly, wherein the centrifugal assembly includes a first main synchronous wheel (71) fixed to one end of the rotating shaft (61), and the crushing assembly includes a second main synchronous wheel (81) fixed to the other end of the rotating shaft (61).

2. A quartz sand processing and screening device according to claim 1, characterized in that: The pre-screen assembly further comprises a material-selecting box (62) circumferentially fixed on the rotating shaft (61), and a pre-screen (63) is embedded in the material-selecting box (62), a vibration motor (64) is embedded in the middle of the pre-screen (63), and an end of the rotating shaft (61) close to the second main synchronous wheel (81) is fixedly connected to a secondary bevel gear (65), the front of the screening box (1) is fixedly connected to a drive motor (66), and the output shaft of the drive motor (66) is fixedly connected to an electric push rod (67) through a coupling, and the top of the electric push rod (67) is fixedly connected to a main bevel gear (68) used in conjunction with the secondary bevel gear (65).

3. A quartz sand processing and screening device according to claim 2, characterized in that: The centrifugal assembly further comprises a first slave synchronous wheel (72) driven by a synchronous belt on the outside of the first master synchronous wheel (71), and the inner cavity of the first slave synchronous wheel (72) is fixedly connected to a short rotating rod (73) that rotates with the outer cover (5), the inner side of the short rotating rod (73) is fixedly connected to a first driving gear (74), and the inner side of the first driving gear (74) is meshed with a first driven gear (75), the first driven gear (75) is fixedly connected to a screening barrel (76) through a connecting shaft, and the bottom of the screening barrel (76) is fixedly connected to an annular slide (77), and the bottom of the inner cavity of the screening box (1) is provided with an annular slide groove (78) that slides with the annular slide (77).

4. A quartz sand processing and screening device according to claim 3, characterized in that: The crushing assembly further comprises a second slave synchronous wheel (82) driven by a synchronous belt on the outside of the second master synchronous wheel (81), and the inside of the second slave synchronous wheel (82) is fixedly connected to a differential gear (83) via a fixed rod, the bottom of the differential gear (83) is meshed with a ring gear (84), and the ring gear (84) is meshed with planetary gears (85) on all sides, the outer side of the planetary gear (85) is fixedly connected to a cam (86) via a fixed rod, and the bottom of the cam (86) is slidably connected to a push rod (87), and the bottom of the push rod (87) is fixedly connected to a main pounding head (88) used in conjunction with the crushing box (3).

5. A quartz sand processing and screening device according to claim 4, characterized in that: A rotation speed sensor (10) is embedded on the outer side of the rotating shaft (61) close to the auxiliary bevel gear (65), and a guide plate (11) with a hollow design is fixed obliquely on the side of the screening box (1) away from the discharge channel.

6. A quartz sand processing and screening device according to claim 5, characterized in that: The inner side of the rotating shaft (61) close to the first main synchronous wheel (71) is fixedly connected with a ratchet (12), and the four sides of the ratchet (12) are all clamped with pawls (13), and the outer side of the pawl (13) is fixedly connected with a limit spring (14).

7. A quartz sand processing and screening device according to claim 6, characterized in that: A material guide rack (15) used in conjunction with an annular chute (78) is fixedly connected to the bottom of the inner cavity of the screening box (1), and material guide blades (16) are fixedly connected to the four sides of the annular slide (77).

8. A quartz sand processing and screening device according to claim 7, characterized in that: The top of the crushing box (3) is embedded with a sliding sleeve (17) that slides with the push rod (87) on all sides, and the lower surface of the push rod (87) is covered with a return spring (18) that is fixedly matched with the sliding sleeve (17) and the main ramming head (88).

9. A quartz sand processing and screening device according to claim 8, characterized in that: The inner side of the main ramming head (88) is fixedly connected to the auxiliary ramming head (19) via a bent rod, and the main ramming head (88) and the auxiliary ramming head (19) are distributed in a circumferentially equidistant state along the central axis of the crushing box (3).

10. The quartz sand processing and screening device according to claim 9, characterized in that: The top of the crushing box (3) is fixedly connected to an annular guide rail (20), and the inner cavity of the annular guide rail (20) is slidably connected to a limiting slide seat (21) fixedly matched with the gear ring (84) on all four sides.

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