A quartz sand screening mechanism

Abstract

The present invention and the technical field of quartz sand processing disclose a quartz sand screening mechanism, comprising a tank body, wherein the interior of the tank body is divided into a crushing bin and a sand washing bin from top to bottom, a transmission shaft is movably inserted inside the tank body, a conical screen plate is fixedly installed below the feed channel, a sand making mechanism is arranged above the conical screen plate, lifting bins are arranged on both sides of the sand making mechanism, an automatic material return mechanism is arranged inside the lifting bin, a stirring mechanism is movably installed on the transmission shaft inside the sand washing bin, the sand making mechanism is used for crushing and grinding raw materials, the automatic material return mechanism is used for automatically lifting larger raw materials for secondary grinding, and the stirring structure is used for cleaning and stirring quartz; the present invention can realize automatic crushing and grinding of quartz ore, can screen quartz sand, and automatically lift quartz sand that does not meet the standards to the sand making mechanism for secondary grinding, can change the state of the stirring blade, and can perform operations such as scrubbing and filtering on the quartz sand.

Description

Technical Field

[0001] The invention relates to the technical field of quartz sand processing, and more specifically, to a quartz sand screening mechanism. Background Art

[0002] Quartz sand is quartz particles made by crushing quartz stone. Quartz stone is a non-metallic mineral, a hard, wear-resistant, chemically stable silicate mineral, its main mineral component is SiO2, quartz sand is an important industrial mineral raw material, non-chemical hazardous goods, widely used in glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter materials and other industries.

[0003] In the prior art, the production of quartz sand requires processes such as crushing, grinding, screening and scrubbing, but the existing quartz sand screening equipment has a single function and requires separate equipment for each step, resulting in cumbersome production steps and reduced production efficiency. Therefore, we invented a quartz sand screening mechanism to solve such problems. Summary of the invention

[0004] The present invention provides a quartz sand screening mechanism, which solves the technical problem that the quartz sand screening equipment in the related art has a single function, requires a separate device for each step, and has complicated production steps, resulting in reduced production efficiency.

[0005] According to one aspect of the present invention, a quartz sand screening mechanism is provided, comprising a tank body, the interior of the tank body is divided into a crushing bin and a sand washing bin from top to bottom, a discharge port and a drain pipe are provided on the barrel wall corresponding to the sand washing bin, an annular groove is provided on the barrel wall inside the sand washing bin, a filter screen is installed at the annular groove, and the discharge port is located above the filter screen, a transmission shaft is movably inserted inside the tank body, the axis of the transmission shaft coincides with the axis of the tank body, the upper end of the transmission shaft passes through the tank body and is connected with the output end of the motor, a feed channel is provided inside the crushing bin, the feed channel is connected with the sand washing bin, and a conical sieve plate is fixedly installed below the feed channel, a sand making mechanism is provided above the conical sieve plate, lifting bins are provided on both sides of the sand making mechanism, the upper and lower ends of the lifting bin are connected with the feed channel, an automatic return mechanism is provided inside the lifting bin, a stirring mechanism is movably installed on the transmission shaft inside the sand washing bin, the sand making mechanism is used for crushing and grinding raw materials, the automatic return mechanism is used for automatically lifting larger raw materials for secondary grinding, and the stirring structure is used for cleaning and stirring quartz.

[0006] Further: the sand making mechanism includes a guide rail, which is vertically fixed on the tank body, and an electric slider is slidably sleeved on the outer surface of the guide rail, which can slide up and down on the surface of the guide rail, and a cross bar is rotatably inserted inside the electric slider, and a No. 1 gear is fixedly sleeved on the outer surface of the cross bar, and the No. 1 gear is meshed with a rack, the rack is parallel to the guide rail, and there is a gap between the rack and the guide rail, discs are fixedly installed at both ends of the cross bar, and a telescopic rod is fixedly installed at the eccentric position of the disc, the axis of the telescopic rod is perpendicular to the surface of the disc, and the installation positions of the telescopic rods on both sides are located on both sides of the center point of the disc, and an adapter plate is fixedly installed on the other end of the telescopic rod, a round rod is fixedly installed on one side of the adapter plate, and the other end of the round rod is rotatably connected to an extrusion plate, and an adjustment component is provided between the extrusion plate and the inner wall of the feed channel.

[0007] Further: a adjusting component includes a roller and a corrugated plate, the roller is rotatably mounted on the lower end side wall of the extrusion plate, the roller is arranged along the length direction of the extrusion plate, the corrugated plate is fixedly mounted on the inner wall of the feed channel, the roller cooperates with the corrugated plate, a torsion spring is installed between the extrusion plate and the adapter plate, and the torsion spring is movably sleeved on the outer surface of the round rod.

[0008] Furthermore: the automatic material return mechanism comprises a screw conveying rod, the screw conveying rod is vertically arranged, and the lower end of the screw conveying rod is connected to the transmission shaft through a transmission assembly.

[0009] Furthermore: the transmission assembly includes gear No. 2 and gear No. 3, gear No. 2 is fixedly mounted on the lower end of the spiral conveying rod, gear No. 3 is fixedly connected to the upper end of the transmission shaft, the middle of gear No. 3 is hollow, and gear No. 2 is meshed with gear No. 3.

[0010] Furthermore: the stirring mechanism includes a controller and a plurality of stirring blades, the controller is movably sleeved on the outer surface of the transmission shaft, the stirring blades and the controller are connected by an adjusting rod, a plurality of through holes are opened on the stirring blades, the stirring blades are provided with a first working posture and a second working posture, the controller is used to adjust the rotation and posture conversion of the stirring blades, a baffle is rotatably installed on the upper end of the controller, a box body is provided at the lower end of the controller, the box body and the baffle are connected by a connecting ring, the connecting ring and the baffle and the box body are all rotatably connected, the adjusting rod is movably inserted on the connecting ring, and the adjusting rod and the box body are connected by a b adjusting component.

[0011] Furthermore: the first working posture is that a plurality of stirring blades are staggered with each other, and there is a certain gap between the stirring blades, forming a fan blade shape.

[0012] Furthermore: the second working posture is that the plurality of stirring blades are in the same horizontal plane, and there is no gap between the stirring blades, forming a disk shape.

[0013] Further: b adjustment component includes a lifting platform and a rotating plate, the lifting platform is slidably sleeved inside the box body, a tow rod triangular block is fixedly installed on the edge of the top surface of the lifting platform, the triangular blocks are arranged in a circular array, the rotating plate is fixedly installed on the outer surface of the adjusting rod, and a support rod is fixedly installed on the bottom surface, and a sphere is movably inlaid on the lower end of the support rod, which cooperates with the triangular block, and a trigger component is arranged on the lifting platform.

[0014] Furthermore: the trigger assembly includes a spring, which is fixedly installed on the top of the lifting platform, the upper end of the spring is rotatably installed with the controller, the lower end of the lifting platform is fixedly installed with a push rod, the trigger plate is movably inserted inside the bottom surface of the box body and extends to the outside of the box body, and a card slot is installed on the bottom surface of the tank body, which cooperates with the push rod.

[0015] The beneficial effects of the present invention are as follows: the present invention can realize automatic crushing and grinding of quartz ore by arranging two extrusion plates in coordination with a regulating component, a No. 1 gear, a rack and other structures; by arranging an automatic material return mechanism, quartz sand can be screened, and quartz sand that does not meet the standards can be automatically lifted to a sand making mechanism for secondary grinding; through a stirring mechanism, the quartz sand can be scrubbed, filtered and other operations can be performed according to the state change of the stirring blade; the operation is simple, and the production efficiency of quartz is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the grinding mechanism structure of the present invention;

[0018] Figure 3 is a side view of the grinding mechanism of the present invention;

[0019] Figure 4 It is a schematic diagram of the transmission component structure of the present invention;

[0020] Figure 5 It is a schematic diagram of the cleaning mechanism structure of the present invention;

[0021] Figure 6 It is a schematic diagram of the cleaning mechanism state of the present invention;

[0022] Figure 7 The present invention Figure 1 Schematic diagram of the structure at point A in the middle.

[0023] In the figure: 100, tank; 110, drain pipe; 111, filter screen; 112, transmission shaft; 113, motor; 114, conical screen plate; 200, sand making mechanism; 210, guide rail; 211, electric slider; 212, cross bar; 213, gear No. 1; 214, rack; 215, disc; 216, telescopic rod; 217, adapter plate; 218, round rod; 219, extrusion plate; 220, roller; 221, corrugated plate; 222, torsion bar; Spring; 300, automatic material return mechanism; 310, spiral conveying rod; 311, gear No. 2; 312, gear No. 3; 400, stirring mechanism; 410, controller; 411, stirring blade; 412, adjusting rod; 413, baffle; 414, box body; 415, connecting ring; 420, lifting platform; 421, rotating plate; 422, triangular block; 423, supporting rod; 424, ball; 430, spring; 431, push rod; 432, slot. DETAILED DESCRIPTION

[0024] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and is not a limitation of the scope of protection, applicability or examples set forth in the book. The functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0025] Example

[0026] like Figure 1-Figure 7As shown, in this embodiment, a quartz sand screening mechanism is proposed, including a tank body 100, the interior of the tank body 100 is divided into a crushing bin and a sand washing bin, a discharge port is opened on the barrel wall corresponding to the sand washing bin and a drain pipe 110 is installed, an annular groove is opened on the barrel wall inside the sand washing bin, a filter screen 111 is installed at the annular groove, and the discharge port is located above the filter screen 111, a transmission shaft 112 is movably inserted inside the tank body 100, the axis of the transmission shaft 112 coincides with the axis of the tank body 100, the upper end of the transmission shaft 112 passes through the tank body 100 and is connected to the output end of the motor 113, and a discharge port 112 is opened inside the crushing bin. There is a feeding channel, which is connected with the sand washing bin, and a conical sieve plate 114 is fixedly installed below the feeding channel, a sand making mechanism 200 is arranged above the conical sieve plate 114, lifting bins are arranged on both sides of the sand making mechanism 200, the upper and lower ends of the lifting bins are connected with the feeding channel, an automatic return mechanism 300 is arranged inside the lifting bin, and a stirring mechanism 400 is movably installed on the transmission shaft 112 inside the sand washing bin, the sand making mechanism 200 is used for crushing and grinding raw materials, the automatic return mechanism 300 is used for automatically lifting larger raw materials for secondary grinding, and the stirring structure is used for cleaning and stirring quartz.

[0027] The sand making mechanism 200 comprises a guide rail 210, which is vertically fixedly mounted on the tank body 100. An electric slider 211 is slidably sleeved on the outer surface of the guide rail 210. The electric slider 211 can slide up and down on the surface of the guide rail 210. A cross bar 212 is rotatably inserted inside the electric slider 211. A No. 1 gear 213 is fixedly sleeved on the outer surface of the cross bar 212. The No. 1 gear 213 is meshed with a rack 214. The rack 214 is parallel to the guide rail 210, and there is a gap between the rack 214 and the guide rail 210. The cross bar 212 is fixedly sleeved on the outer surface of the cross bar 212. The rack 214 is meshed with the rack 214. The rack 214 is parallel to the guide rail 210, and there is a gap between the rack 214 and the guide rail 210. 2 is fixedly installed with a disc 215 at both ends, and a telescopic rod 216 is fixedly installed at the eccentric position of the disc 215. The axis of the telescopic rod 216 is perpendicular to the surface of the disc 215, and the installation positions of the telescopic rods 216 on both sides are located on both sides of the center point of the disc 215. An adapter plate 217 is fixedly installed on the other end of the telescopic rod 216, and a round rod 218 is fixedly installed on one side of the adapter plate 217. The other end of the round rod 218 is rotatably connected with an extrusion plate 219, and an adjustment component a is provided between the extrusion plate 219 and the inner wall of the feed channel.

[0028] a The adjusting component includes a roller 220 and a corrugated plate 221. The roller 220 is rotatably mounted on the lower end side wall of the extrusion plate 219. The roller 220 is arranged along the length direction of the extrusion plate 219. The corrugated plate 221 is fixedly mounted on the inner wall of the feed channel. The roller 220 cooperates with the corrugated plate 221. A torsion spring 222 is installed between the extrusion plate 219 and the adapter plate 217. The torsion spring 222 is movably sleeved on the outer surface of the round rod 218.

[0029] The automatic material return mechanism 300 includes a screw conveying rod 310 , which is vertically arranged, and the lower end of the screw conveying rod 310 is connected to the transmission shaft 112 through a transmission assembly.

[0030] The transmission assembly includes a second gear 311 and a third gear 312. The second gear 311 is fixedly mounted on the lower end of the spiral conveying rod 310. The third gear 312 is fixedly connected to the upper end of the transmission shaft 112. The middle of the third gear 312 is hollow, and the second gear 311 is meshed with the third gear 312.

[0031] The stirring mechanism 400 includes a controller 410 and a plurality of stirring blades 411. The controller 410 is movably sleeved on the outer surface of the transmission shaft 112. The stirring blades 411 and the controller 410 are connected by an adjusting rod 412. A plurality of through holes are opened on the stirring blades 411. The stirring blades 411 are provided with a first working posture and a second working posture. The controller 410 is used to adjust the rotation and posture conversion of the stirring blades 411. A baffle 413 is rotatably installed on the upper end of the controller 410. A box body 414 is provided at the lower end of the controller 410. The box body 414 is connected to the baffle 413 through a connecting ring 415. The connecting ring 415 is rotatably connected to the baffle 413 and the box body 414. The adjusting rod 412 is movably inserted on the connecting ring 415. The adjusting rod 412 and the box body 414 are connected by a b adjusting component.

[0032] In the first working posture, a plurality of stirring blades 411 are staggered with each other, and there is a certain gap between the stirring blades 411 to form a fan blade shape.

[0033] The second working posture is that the plurality of stirring blades 411 are in the same horizontal plane, and there is no gap between the stirring blades 411 , forming a disk shape.

[0034] b The adjustment component includes a lifting platform 420 and a rotating plate 421. The lifting platform 420 is slidably sleeved inside the box body 414. A tow rod triangular block 422 is fixedly installed on the edge of the top surface of the lifting platform 420. The triangular blocks 422 are arranged in a circular array. The rotating plate 421 is fixedly installed on the outer surface of the adjustment rod 412, and a support rod 423 is fixedly installed on the bottom surface. A round ball 424 is movably inlaid on the lower end of the support rod 423. The round ball 424 cooperates with the triangular block 422. A trigger component is set on the lifting platform 420.

[0035] The trigger assembly includes a spring 430, which is fixedly mounted on the top of the lifting platform 420. The upper end of the spring 430 is rotatably mounted on the controller 410. A push rod 431 is fixedly mounted on the lower end of the lifting platform 420. The trigger plate is movably inserted into the bottom surface of the box body 414 and extends to the outside of the box body 414. A card slot 432 is installed on the bottom surface of the tank body 100, and the card slot 432 cooperates with the push rod 431.

[0036] The working principle of a quartz sand screening mechanism proposed in this embodiment is as follows. When working, the motor 113 and the electric slider 211 are started first to start the device to start working, and then the quartz ore is put into the feeding channel. When the electric slider 211 drives the extrusion plate 219 to move up and down on the guide rail 210, the rollers 220 on both sides of the extrusion plate 219 will contact the corrugated plate 221, and the rollers 220 will roll along the surface of the corrugated plate 221. When rolling to the crest, the lower ends of the two extrusion plates 219 will move closer to each other to form a trumpet shape with an opening upward. At this time, the raw material entering the feeding channel will fall between the two extrusion plates 219. When the rollers 220 come to the trough, the upper ends of the two extrusion plates 219 move closer to each other under the action of the torsion spring 222. At this time, the raw material entering the extrusion plate 219 will be crushed to achieve the purpose of automatic feeding and preliminary crushing.

[0037] At the same time, the electric slider 211 moves, which will drive the first gear 213 to move synchronously. When the first gear 213 moves, it will roll on the rack 214, thereby driving the cross bar 212 to rotate. The rotation of the cross bar 212 drives the disc 215 to rotate. The rotation of the disc 215 drives the telescopic rod 216 to rotate synchronously, thereby driving the two crushing discs to move synchronously. Because the two telescopic rods 216 are eccentrically arranged, the two crushing discs will perform relative kneading motion, thereby achieving an effect of grinding the raw materials;

[0038] The raw materials after crushing and grinding fall on the powder sieve plate, and the quartz raw materials that meet the standards fall from the sieve holes, and the raw materials that do not meet the standards roll along the inclined surface of the conical powder sieve plate to the inside of the lifting bin, and the transmission shaft 112 rotates to drive the third gear 312 to rotate, and the third gear 312 rotates to drive the second gear 311 to rotate, and the second gear 311 rotates to drive the spiral conveying rod 310 to rotate, which will lift the material to the upper end connected to the feed channel and fall into the sand making mechanism 200 again, and the lifted material will be crushed and ground for the second time, and the cycle will be repeated until it meets the standards;

[0039] The crushed quartz raw materials that meet the standards enter the sand washing bin, and then the cleaning water is added to the tank body 100. The motor 113 drives the transmission shaft 112 to rotate, and the rotation of the transmission shaft 112 drives the controller 410 sleeved on the transmission shaft 112 to rotate, and the rotation of the controller 410 drives the adjustment rod 412 to rotate, and the rotation of the adjustment rod 412 drives the stirring blade 411 to rotate. It should be noted that the initial position of the stirring blade 411 is located above the feed inlet. When the stirring blade 411 rotates, the controller 410 is started at the same time, and the controller 410 changes the stirring blade 411 to the first working posture, and the controller 410 drives the adjustment rod 412 to rotate, and the rotation of the adjustment rod 412 drives the stirring blade 411 to rotate, so that the stirring blade 411 is changed to the first working posture and maintains the first working posture;

[0040] After the first working posture is changed, the stirring blade 411 rotates, and the controller 410 drives the stirring blade 411 to slide downward from the upper end of the transmission shaft 112. At this time, the stirring blade 411 rotates to drive the water inside the tank 100, and the water flow drives the quartz at the bottom to move with the water flow, so that the water and the quartz are fully mixed and contacted, thereby achieving a mixing effect, making the quartz cleaning more comprehensive and the cleaning effect better;

[0041] When the controller 410 drives the stirring blade 411 to reach the bottom of the tank body 100, the speed of the transmission shaft 112 is reduced, so that the quartz falls back to the bottom. At this time, the top rod 431 contacts the bottom of the tank body 100. At this time, the top rod 431 is restricted by the card slot 432. At the same time, the top rod 431 is pushed up, driving the lifting platform 420 inside the box body 414 to slide upward. The lifting platform 420 slides upward and drives the triangular block 422 to slide upward together. At this time, the triangular block 422 will contact the ball 424. When the adjusting rod 412 rotates, at the same time The ball 424 is driven to rotate synchronously. When the ball 424 contacts the triangular block 422, the ball 424 rolls along the surface of the triangular block 422. When the ball 424 rolls onto the inclined surface of the triangular block 422, the adjusting rod 412 is driven to rotate, thereby driving one side of the stirring blade 411 to press down. When the ball 424 is separated from the triangular block 422, the connecting rod is reset under the action of the controller 410, and the stirring blade 411 is driven to reset at the same time. In this way, a reciprocating cycle can be performed to achieve a pressure-rubbing effect on the quartz particles, thereby further improving the cleaning effect of the quartz.

[0042] After cleaning, the triangular block 422 is separated from the ball 424, the rotation speed of the transmission shaft 112 is increased, the water flow rate inside the tank body 100 is accelerated, and the quartz is driven by the water flow to the top of the stirring blade 411. At this time, the controller 410 is started, the stirring blade 411 is adjusted to the second working posture, and then the motor 113 is stopped to stop the stirring blade 411 from rotating. Then the controller 410 is started to slide upward slowly, and the stirring blade 411 is driven to slide upward at the same time. At this time, the quartz above the stirring blade 411 will accumulate on the stirring blade 411, and the sewage will be separated from the quartz particles by the holes of the stirring blade 411, thereby achieving the filtering effect. Then, when it is lifted to the filter screen 111, the motor 113 is started again, and the motor 113 drives the stirring blade 411 to rotate. The rotation of the stirring blade 411 drives the quartz above to rotate together, and then the quartz is blocked by the filter screen 111. The residual water will enter the corresponding groove under the action of centrifugal force, thereby achieving the effect of draining. The drained quartz continues to be lifted to the discharge port for unloading.

[0043] The embodiment of the present embodiment is described above in conjunction with the accompanying drawings, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms without departing from the purpose and scope of protection of the present embodiment, all of which are within the protection of the present embodiment.

Claims

1. A quartz sand screening mechanism, comprising a tank body (100), characterized in that: The interior of the tank body (100) is divided into a crushing bin and a sand washing bin from top to bottom. A discharge port and a drain pipe (110) are provided on the barrel wall corresponding to the sand washing bin. An annular groove is provided on the barrel wall inside the sand washing bin. A filter screen (111) is installed in the annular groove. The discharge port is located above the filter screen (111). A transmission shaft (112) is movably inserted inside the tank body (100). The axis of the transmission shaft (112) coincides with the axis of the tank body (100). The upper end of the transmission shaft (112) passes through the tank body (100). The lower end of the transmission shaft (112) is connected to the output end of the motor (113). A feeding channel is provided inside the crushing bin. The material channel is connected to the sand washing bin, and a conical screen plate (114) is fixedly installed below the material feeding channel, a sand making mechanism (200) is arranged above the conical screen plate (114), lifting bins are arranged on both sides of the sand making mechanism (200), the upper and lower ends of the lifting bins are connected to the material feeding channel, an automatic material return mechanism (300) is arranged inside the lifting bin, and a stirring mechanism (400) is movably installed on the transmission shaft (112) inside the sand washing bin, the sand making mechanism (200) is used for crushing and grinding raw materials, the automatic material return mechanism (300) is used for automatically lifting larger raw materials for secondary grinding, and the stirring mechanism is used for cleaning and stirring quartz; The stirring mechanism (400) comprises a controller (410) and a plurality of stirring blades (411). The controller (410) is movably sleeved on the outer surface of the transmission shaft (112). The stirring blades (411) and the controller (410) are connected via an adjustment rod (412). The stirring blades (411) are provided with a plurality of through holes. The stirring blades (411) are provided with a first working posture and a second working posture. The controller (410) is used to adjust the rotation of the stirring blades (411) and the posture rotation. The controller (410) is provided with a baffle (413) rotatably mounted on the upper end thereof, and a box body (414) is provided on the lower end thereof; the box body (414) is connected to the baffle (413) via a connecting ring (415); the connecting ring (415) is rotatably connected to the baffle (413) and the box body (414); an adjusting rod (412) is movably inserted into the connecting ring (415); and the adjusting rod (412) and the box body (414) are connected via an adjusting component b; The first working posture is that the plurality of stirring blades (411) are staggered with each other, and there is a certain gap between the stirring blades (411), forming a fan blade shape; The second working posture is that the plurality of stirring blades (411) are in the same horizontal plane, and there is no gap between the stirring blades (411), forming a disk shape; b. The adjustment component comprises a lifting platform (420) and a rotating plate (421). The lifting platform (420) is slidably sleeved inside the box body (414). A drag rod triangular block (422) is fixedly mounted on the edge of the top surface of the lifting platform (420). The triangular blocks (422) are arranged in a circular array. The rotating plate (421) is fixedly mounted on the outer surface of the adjustment rod (412). A support rod (423) is fixedly mounted on the bottom surface of the rotating plate (421). A round ball (424) is movably embedded at the lower end of the support rod (423). The round ball (424) cooperates with the triangular block (422). A trigger component is arranged on the lifting platform (420); The trigger assembly comprises a spring (430), the spring (430) is fixedly mounted on the top of the lifting platform (420), the upper end of the spring (430) is rotatably mounted on the controller (410), a push rod (431) is fixedly mounted on the lower end of the lifting platform (420), a trigger plate is movably inserted inside the bottom surface of the box body (414) and extends to the outside of the box body (414), and a slot (432) is installed on the bottom surface of the tank body (100), and the slot (432) matches the push rod (431).

2. A quartz sand screening mechanism according to claim 1, characterized in that: The sand making mechanism (200) comprises a guide rail (210), the guide rail (210) is vertically fixedly installed on the tank body (100), an electric slider (211) is slidably sleeved on the outer surface of the guide rail (210), the electric slider (211) can slide up and down on the surface of the guide rail (210), a cross bar (212) is rotatably inserted inside the electric slider (211), a No. 1 gear (213) is fixedly sleeved on the outer surface of the cross bar (212), the No. 1 gear (213) is meshed with a rack (214), the rack (214) is parallel to the guide rail (210), and there is a gap between the rack (214) and the guide rail (210), and the cross bar (212) is rotatably inserted inside the electric slider (211). A disc (215) is fixedly mounted on both ends of the rod (212); a telescopic rod (216) is fixedly mounted at an eccentric position of the disc (215); the axis of the telescopic rod (216) is perpendicular to the surface of the disc (215); and the installation positions of the telescopic rods (216) on both sides are located on both sides of the center point of the disc (215); an adapter plate (217) is fixedly mounted on the other end of the telescopic rod (216); a round rod (218) is fixedly mounted on one side of the adapter plate (217); the other end of the round rod (218) is rotatably connected to an extrusion plate (219); and an adjustment component is provided between the extrusion plate (219) and the inner wall of the feed channel.

3. A quartz sand screening mechanism according to claim 2, characterized in that: a. The adjusting component comprises a roller (220) and a corrugated plate (221); the roller (220) is rotatably mounted on the side wall of the lower end of the extrusion plate (219); the roller (220) is arranged along the length direction of the extrusion plate (219); the corrugated plate (221) is fixedly mounted on the inner wall of the feed channel; the roller (220) and the corrugated plate (221) cooperate with each other; a torsion spring (222) is mounted between the extrusion plate (219) and the adapter plate (217); the torsion spring (222) is movably sleeved on the outer surface of the round rod (218).

4. A quartz sand screening mechanism according to claim 1, characterized in that: The automatic material return mechanism (300) comprises a screw conveying rod (310), the screw conveying rod (310) is arranged vertically, and the lower end of the screw conveying rod (310) is connected to the transmission shaft (112) via a transmission assembly.

5. A quartz sand screening mechanism according to claim 4, characterized in that: The transmission assembly comprises a second gear (311) and a third gear (312), wherein the second gear (311) is fixedly mounted on the lower end of the spiral conveying rod (310), and the third gear (312) is fixedly connected to the upper end of the transmission shaft (112), the middle of the third gear (312) is hollow, and the second gear (311) is meshed with the third gear (312).

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