A quartz sand crushing and powder making device

Abstract

The present invention discloses a quartz sand crushing and powder making device, which relates to the technical field of crushing equipment, and includes a pair of rollers, a dust removal mechanism and a crushing mechanism. The pair of rollers includes a feed box, and the inner wall of the feed box is symmetrically rotated and provided with two crushing rollers; the crushing mechanism includes a crushing box fixedly connected to the lower surface of the feed box, and two limit plates are fixed between the front and rear inner walls of the crushing box. The surface of the limit plate is slidably provided with two movable rods, and the tops of the four movable rods are fixedly connected with a material guide inclined plate. The present invention realizes efficient crushing and powder making capabilities by arranging a pair of rollers and a crushing mechanism. By arranging two crushing rollers in the pair of rollers, the quartz sand can be effectively preliminarily crushed. The sand pressing plate and the strip-shaped tooth block in the crushing mechanism cooperate with the strip-shaped crushing holes on the crushing bottom plate to further crush the quartz sand into powder, thereby improving the efficiency of crushing and powder making.

Description

Technical Field

[0001] The invention relates to the technical field of crushing equipment, in particular to a quartz sand crushing and powder making device. Background Art

[0002] As an important industrial raw material, quartz sand is widely used in glass manufacturing, ceramic production, building materials, electronics, and other fields. Crushing and pulverizing are two key steps in the processing of quartz sand, and their efficiency and effectiveness directly affect the quality of the final product and production costs.

[0003] In the patent field, although there have been some technical improvements for quartz sand crushing and pulverizing devices, such as the quartz sand crushing and pulverizing device disclosed in patent document CN118080124A, there are still some areas that need to be optimized. The comparative patent mainly improves crushing efficiency and fineness control by adding a screening device and optimizing the crushing chamber structure, but there is still room for improvement in the degree of automation, dust treatment, and energy consumption control. It is also unable to effectively remove the fine dust generated during the crushing process; at the same time, the linkage between its crushing and pulverizing processes is not strong, requiring more manual intervention, which affects production efficiency and ease of operation.

[0004] In response to the above problems, the present invention proposes a new type of quartz sand crushing and pulverizing device, which aims to achieve a high-efficiency, low-consumption and environmentally friendly quartz sand crushing and pulverizing process by optimizing the design of the crushing mechanism, pulverizing mechanism and dust removal mechanism. Summary of the Invention

[0005] The present invention aims to provide a quartz sand crushing and pulverizing device to address the problems identified in the aforementioned background art. This device not only improves crushing efficiency and fineness control, but also effectively reduces energy consumption and dust pollution through an automated linkage mechanism and an efficient dust treatment system, providing a more advanced technical solution for quartz sand processing.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a quartz sand crushing and pulverizing device, comprising a pair of rollers, a dust removal mechanism and a crushing mechanism, wherein the pair of rollers comprises a feed box, the inner wall of which is symmetrically rotated and provided with two crushing rollers;

[0007] The crushing mechanism includes a crushing box fixedly connected to the lower surface of the feed box, two limit plates are fixed between the front and rear inner walls of the crushing box, two movable rods are slidably provided on the surface of the limit plate, the top ends of the four movable rods are fixedly connected to the material guide inclined plates, and the bottom ends of the movable rods are fixedly connected to the sand pressing plates, the lower surface of the sand pressing plates are fixedly connected to a plurality of bar-shaped tooth blocks, a crushing bottom plate is symmetrically fixedly provided on the inner wall of the crushing box, a plurality of bar-shaped crushing holes are opened on the surface of the crushing bottom plate, the positions of the bar-shaped crushing holes correspond to the bar-shaped tooth blocks, and the sizes of the bar-shaped crushing holes match the bar-shaped tooth blocks;

[0008] The dust removal mechanism includes a protective cover fixed on the back of the feed box, an air intake box is fixed inside the protective cover, an air bag is fixed inside the air intake box, and a pressing plate is fixed on the top of the air bag.

[0009] Preferably, two pressing rods are fixedly connected to the upper surface of the pressing plate, the top ends of the two pressing rods extend to the outside of the air intake box and are fixedly connected to a linked push plate, the surface of the pressing rod is sleeved with a compression spring, the top end of the compression spring is fixedly connected to the lower surface of the linked push plate, and exhaust pipes are fixedly embedded on the left and right sides of the air intake box, the exhaust pipes extend to the interior of the feed box at one end away from the air intake box and are fixed with an air jet pipe, and a plurality of air jet nozzles are evenly distributed on the surface of the air jet pipe, and the air outlet of the air jet nozzle corresponds to the position of the crushing roller.

[0010] Preferably, a one-way exhaust valve is fixedly provided on the surface of the jet pipe, the air inlet end of the exhaust pipe extends to the interior of the airbag, and the exhaust pipe is fixedly connected to the surface of the airbag, an air inlet pipe is fixedly provided on the surface of the airbag, the air inlet end of the air inlet pipe extends to the outside of the air inlet box, and a one-way air inlet valve is fixedly provided on the surface of the air inlet pipe.

[0011] Preferably, one end of each of the two crushing rollers is fixedly connected to a linkage shaft rod, the linkage shaft rod extends to the outside of the feed box away from one end of the crushing roller, and is fixedly connected to an eccentric cam, the position of the eccentric cam corresponds to the linkage push plate, and the two eccentric cams are overlapped with the upper surface of the linkage push plate.

[0012] Preferably, a drive box is fixedly provided on the front side of the feed box, and a rotating shaft is fixed on the other end of the two crushing rollers, one end of the two rotating shafts extends to the interior of the drive box, and a driving gear and a driven gear are fixed on the ends of the two rotating shafts respectively, the driving gear is meshed with the driven gear, a driving motor is fixed inside the drive box, a transmission gear is fixed on the rotating shaft of the driving motor, the transmission gear is meshed with the driving gear, a first synchronous wheel is fixedly provided on the surface of the driven gear, a transmission rod is rotatably provided on the inner wall of the crushing box, one end of the transmission rod extends to the outside of the crushing box and is fixedly connected to the second synchronous wheel, and a transmission belt is installed between the first synchronous wheel and the second synchronous wheel.

[0013] Preferably, the transmission rod is located directly below the material guide inclined plate, and two linkage cams are fixedly connected to the surface of the transmission rod, and a lifting plate is fixedly connected between the four movable rods, the linkage cam overlaps the upper surface of the lifting plate, and a return spring is sleeved on the surface of the movable rod, the top end of the return spring is fixedly connected to the lower surface of the lifting plate, and the bottom end of the return spring is fixedly connected to the upper surface of the limit plate, and a limiting through hole matching the movable rod is opened on the surface of the limiting plate, and the movable rod is slidably connected to the inner wall of the limiting through hole.

[0014] Preferably, the guide inclined plate is an inverted V-shaped structure, and the guide inclined plate is located directly below the two crushing rollers, two sliding plates are symmetrically arranged on the inner side of the top of the feed box, and the sliding plates are located above the crushing rollers, and a base support shell is fixedly provided at the bottom of the crushing box, and a collecting box is placed inside the base support shell, and a rectangular drop opening is provided on the upper surface of the base support shell, and the position of the rectangular drop opening corresponds to the collecting box, and the rectangular drop opening is located directly below the two crushing bottom plates, and a material removal port is provided on the front of the base support shell, and a flip baffle is rotatably provided on the outside of the material removal port.

[0015] Preferably, the dust removal mechanism also includes dust collecting boxes fixed on both sides of the crushing box, and dust suction pumps fixedly installed on both sides of the feed box, the input end of the dust suction pump is fixedly installed with an air suction pipe, the input end of the air suction pipe extends to the interior of the dust collecting box, and the inner wall of the dust collecting box is fixedly installed with a filter plate, and the air inlet of the air suction pipe is located above the filter plate.

[0016] Preferably, a plurality of dust suction holes are opened on the side of the crushing box, and the plurality of dust suction holes are evenly distributed on the surface of the crushing box in a linear array, and the positions of the dust suction holes correspond to the dust collecting box. A sand retaining net is fixed on the inner wall of the crushing box, and the position of the sand retaining net corresponds to the dust suction holes.

[0017] Preferably, the crushing bottom plate and the sand pressing plate are both in a downwardly inclined state, and the position of the crushing bottom plate corresponds to the sand retaining net.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) This quartz sand crushing and pulverizing device achieves efficient crushing and pulverizing capabilities by setting up a roller mechanism and a crushing mechanism. The two crushing rollers in the roller mechanism can effectively perform preliminary crushing of the quartz sand. The sand pressing plate and strip-shaped tooth blocks in the crushing mechanism cooperate with the strip-shaped crushing holes on the crushing bottom plate to further crush the quartz sand into powder, thereby improving the efficiency of crushing and pulverizing.

[0020] (2) This type of quartz sand crushing and pulverizing device realizes automation and linkage by setting a retaining transmission rod, a first synchronous wheel, a second synchronous wheel and a transmission belt. The crushing rollers rotate with each other through a driving motor and a transmission gear, and are linked with components such as a transmission rod and a linkage cam to ensure the stable operation of the device. The transmission rod and linkage cam in the crushing mechanism are linked with the crushing mechanism to realize the automatic material guiding and fine crushing process of the quartz sand, thereby reducing manual operation.

[0021] (3) This type of quartz sand crushing and pulverizing device is equipped with a dust removal mechanism. The air bag in the dust removal mechanism generates airflow inside the feed box through the action of the pressing plate and the linked push plate, and sprays it out through the air nozzle on the surface of the air jet pipe. It can not only use the high-speed airflow to clean the sand material adsorbed on the surface of the crushing roller, but also use the dust suction pump and the dust suction hole to suck the dust generated in the crushing box into the dust collecting box, effectively removing the dust generated during the crushing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the present invention;

[0023] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the drive box of the present invention;

[0025] Figure 4 This is a schematic diagram of the internal structure of the protective cover of the present invention;

[0026] Figure 5 It is a schematic diagram of the front cross-section structure of the present invention;

[0027] Figure 6 Schematic diagram of the internal structure of the feed box and crushing box of the present invention;

[0028] Figure 7 for Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 8 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0030] Figure 9 for Figure 6 Schematic diagram of the enlarged structure at C in the middle;

[0031] In the figure: 1. Roller mechanism; 2. Dust removal mechanism; 3. Crushing mechanism; 4. Base support shell; 5. Collection box; 6. Rectangular drop opening; 7. Flip baffle;

[0032] 101. Feed box; 102. Crushing roller; 103. Linkage shaft; 104. Eccentric cam; 105. Drive box; 106. Drive gear; 107. Driven gear; 108. Drive motor; 109. Transmission gear; 110. First synchronous wheel; 111. Sliding plate;

[0033] 201, protective cover; 202, air intake box; 203, air bag; 204, pressing plate; 205, pressing rod; 206, linkage push plate; 207, compression spring; 208, exhaust pipe; 209, air injection pipe; 210, air injection nozzle; 211, one-way exhaust valve; 212, air intake pipe; 213, one-way air intake valve; 214, dust collection box; 215, dust suction pump; 216, air intake pipe; 217, filter plate; 218, dust suction hole; 219, sand retaining net; 220, transmission belt;

[0034] 301. Crushing box; 302. Limiting plate; 303. Movable rod; 304. Material guide inclined plate; 305. Sand pressing plate; 306. Strip tooth block; 307. Crushing bottom plate; 308. Strip crushing hole; 309. Transmission rod; 310. Linkage cam; 311. Lifting plate; 312. Return spring; 313. Second synchronous wheel. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1-9 The present invention provides a quartz sand crushing and pulverizing device to solve the problems of low crushing efficiency, serious dust pollution, and low degree of automation in the prior art.

[0037] To achieve the above objectives, the present invention adopts the following technical solution: a quartz sand crushing and pulverizing device, comprising a roller mechanism 1, a dust removal mechanism 2, and a pulverizing mechanism 3. The roller mechanism 1 is used for preliminary crushing of the quartz sand, the dust removal mechanism 2 is used for removing dust generated during the crushing process, and the pulverizing mechanism 3 is used for further crushing the preliminary crushed quartz sand into powder.

[0038] It's worth noting that the roller mechanism 1 includes a feed box 101, with two crushing rollers 102 symmetrically mounted on its inner wall. A gap is formed between the two crushing rollers 102 to accommodate and crush the quartz sand. The surfaces of the crushing rollers 102 are equipped with raised crushing teeth to enhance the crushing effect.

[0039] A drive box 105 is fixed to the front of the feed box 101, housing a drive motor 108. A transmission gear 109 is fixed to the rotating shaft of the drive motor 108, which meshes with the drive gear 106. A rotating shaft is fixed to the other end of each crushing roller 102. One end of the rotating shaft extends into the interior of the drive box 105, where a drive gear 106 and a driven gear 107 are respectively fixed. The drive gear 106 and the driven gear 107 mesh together, achieving synchronous rotation of the two crushing rollers 102.

[0040] Furthermore, one end of each crushing roller 102 is fixedly connected to a linkage shaft 103. The end of the linkage shaft 103, away from the crushing rollers 102, extends to the exterior of the feed box 101 and is fixedly connected to an eccentric cam 104. The eccentric cam 104 is positioned to correspond with the linkage push plate 206, and both eccentric cams 104 overlap the upper surface of the linkage push plate 206. Thus, when the crushing rollers 102 rotate, the eccentric cams 104 push the linkage push plate 206 up and down, providing power for the dust removal mechanism 2.

[0041] It is worth noting that the dust removal mechanism 2 includes a protective cover 201 fixed to the back of the feed box 101, and an air inlet box 202 is fixed inside the protective cover 201. An air bag 203 is fixed inside the air inlet box 202, and a pressing plate 204 is fixed to the top of the air bag 203. Two pressing rods 205 are fixedly connected to the upper surface of the pressing plate 204. The top ends of the pressing rods 205 extend to the outside of the air inlet box 202 and are fixedly connected to a linkage push plate 206. The surface of the pressing rods 205 is sheathed with a compression spring 207, and the top end of the compression spring 207 is fixedly connected to the lower surface of the linkage push plate 206.

[0042] Exhaust pipes 208 are fixedly embedded on both sides of the air inlet box 202. The air inlet end of the exhaust pipe 208 extends into the interior of the airbag 203 and is fixedly connected to the surface of the airbag 203. The distal end of the exhaust pipe 208 extends into the interior of the feed box 101 and is fixed to an air injection pipe 209. Several air nozzles 210 are evenly distributed on the surface of the air injection pipe 209, and the air outlets of the air nozzles 210 correspond to the positions of the crushing rollers 102. A one-way exhaust valve 211 is also fixed to the surface of the air injection pipe 209 to ensure one-way air flow.

[0043] An air intake pipe 212 is also fixedly mounted on the surface of the airbag 203. The air intake end of the air intake pipe 212 extends to the outside of the air intake box 202 and is fixedly mounted with a one-way air intake valve 213. Thus, when the airbag 203 needs to be inflated, an external air source can enter the interior of the airbag 203 through the air intake pipe 212 and the one-way air intake valve 213.

[0044] As the crushing roller 102 rotates, the eccentric cam 104 pushes the linked push plate 206 up and down. This push plate 206 compresses the airbag 203 via the pressing rod 205, causing the gas inside the airbag 203 to be ejected from the air nozzle 210 through the exhaust pipe 208 and the air injection pipe 209. This high-speed airflow not only cleans the sand adsorbed on the surface of the crushing roller 102 but also disperses the dust inside the feed box 101.

[0045] It should be further explained that the dust removal mechanism 2 also includes dust collection boxes 214 fixed to both sides of the crushing box 301, and dust suction pumps 215 fixedly mounted on both sides of the feed box 101. An air suction pipe 216 is fixedly mounted to the input end of the dust suction pump 215, and the input end of the air suction pipe 216 extends into the interior of the dust collection box 214. A filter screen 217 is fixedly mounted on the inner wall of the dust collection box 214, and the air inlet of the air suction pipe 216 is located above the filter screen 217. In this way, the dust suction pump 215 can draw dust generated inside the crushing box 301 into the dust collection box 214 through the air suction pipe 216, and filter it through the filter screen 217.

[0046] It is worth noting that the crushing mechanism 3 comprises a crushing box 301 fixedly connected to the lower surface of the feed box 101. Two limit plates 302 are fixed between the front and rear inner walls of the crushing box 301. Two movable rods 303 are slidably mounted on the surfaces of the limit plates 302. The top ends of the four movable rods 303 are fixedly connected to inclined guide plates 304, which are in an inverted V-shaped structure and are located directly below the two crushing rollers 102. The bottom ends of the movable rods 303 are fixedly connected to a sand pressing plate 305, whose lower surface is fixedly connected to a plurality of bar-shaped tooth blocks 306.

[0047] A pulverizing base plate 307 is symmetrically fixed to the inner wall of the pulverizing box 301. A plurality of strip-shaped pulverizing holes 308 are formed on the surface of the pulverizing base plate 307. The positions of the strip-shaped pulverizing holes 308 correspond to the strip-shaped tooth blocks 306, and the size of the strip-shaped pulverizing holes 308 matches the strip-shaped tooth blocks 306. When the sand pressing plate 305 moves downward, the strip-shaped tooth blocks 306 enter the strip-shaped pulverizing holes 308, finely crushing the quartz sand.

[0048] It should be noted that a transmission rod 309 is rotatably mounted on the inner wall of the crushing box 301. One end of the transmission rod 309 extends to the outside of the crushing box 301 and is fixedly connected to the second synchronous pulley 313. A first synchronous pulley 110 is fixedly mounted on the surface of the driven gear 107. A transmission belt 220 is installed between the first synchronous pulley 110 and the second synchronous pulley 313. Thus, when the drive motor 108 drives the crushing roller 102 to rotate, it also drives the transmission rod 309 to rotate via the transmission belt 220.

[0049] The transmission rod 309 is located directly below the material guide ramp 304, and two interlocking cams 310 are fixedly connected to its surface. A lifting plate 311 is fixedly connected between the four movable rods 303, and the interlocking cams 310 overlap the upper surface of the lifting plate 311. A return spring 312 is sleeved on the surface of the movable rod 303. The top end of the return spring 312 is fixedly connected to the lower surface of the lifting plate 311, and the bottom end is fixedly connected to the upper surface of the limit plate 302. The limit plate 302 has a stop hole that matches the movable rod 303, and the movable rod 303 is slidably connected to the inner wall of the stop hole.

[0050] When the transmission rod 309 rotates, the linkage cam 310 pushes the lifting plate 311 up and down, which in turn drives the movable rod 303, the guide inclined plate 304, and the sand pressing plate 305 up and down. When the sand pressing plate 305 moves downward, the strip-shaped tooth blocks 306 insert into the strip-shaped crushing holes 308 to finely crush the quartz sand. When the sand pressing plate 305 moves upward, the return spring 312 pulls it back to its original position, preparing for the next fine crushing operation.

[0051] It should be noted that two sliding plates 111 are symmetrically arranged on the inner side of the top of the feed box 101. The sliding plates 111 are located above the crushing rollers 102 and are used to guide the quartz sand into between the crushing rollers 102. A base support shell 4 is fixedly arranged at the bottom of the crushing box 301, and a collection box 5 is placed inside the base support shell 4 to collect the finely crushed quartz sand powder. A rectangular drop opening 6 is provided on the upper surface of the base support shell 4. The position of the rectangular drop opening 6 corresponds to the collection box 5 and is located directly below the two crushing bottom plates 307. A material removal port is provided on the front of the base support shell 4, and a flap 7 is rotatably provided on the outside of the material removal port to facilitate the removal of the collection box 5 and the quartz sand powder therein.

[0052] The side of the crushing box 301 is also provided with a number of dust collection holes 218, evenly distributed in a linear array across its surface and corresponding to the dust collection box 214. A sand retaining screen 219 is fixed to the inner wall of the crushing box 301, positioned corresponding to the dust collection holes 218 to prevent quartz sand powder from entering the dust collection holes 218.

[0053] The crushing bottom plate 307 and the sand pressing plate 305 are both tilted downward, and the position of the crushing bottom plate 307 corresponds to the sand retaining net 219. In this way, the finely crushed quartz sand powder can slide along the crushing bottom plate 307 and the sand pressing plate 305 into the collection box 5, while the sand retaining net 219 can prevent larger quartz sand particles from entering the dust suction hole 218.

[0054] Working principle: When in use, first start the drive motor 108, which drives the two crushing rollers 102 to rotate through the transmission gear 109 and the drive gear 106. Quartz sand enters the feed box 101 through the feed port and is initially crushed between the two crushing rollers 102.

[0055] Simultaneously, the rotation of the crushing roller 102 pushes the linked push plate 206 up and down via the linked shaft 103 and eccentric cam 104. The linked push plate 206 compresses the airbag 203 via the pressing rod 205, causing the gas inside the airbag 203 to be ejected from the air nozzle 210 through the exhaust pipe 208 and the air injection pipe 209. This high-speed airflow cleans the sand adsorbed on the surface of the crushing roller 102 and disperses the dust inside the feed box 101.

[0056] After preliminary crushing, the quartz sand enters the crushing box 301 through the guide ramp 304. Simultaneously, the drive motor 108 rotates the transmission rod 309 via the transmission belt 220. The rotation of the transmission rod 309, via the linkage cam 310, pushes the lifting plate 311 up and down, in turn driving the movable rod 303, the guide ramp 304, and the sand pressing plate 305 up and down. As the sand pressing plate 305 moves downward, the strip-shaped tooth blocks 306 insert into the strip-shaped crushing holes 308, crushing the quartz sand.

[0057] The finely crushed quartz sand powder slides through the crushing bottom plate 307 and the sand pressing plate 305 into the collection box 5. Simultaneously, the dust generated inside the crushing box 301 is sucked into the dust collection box 214 via the suction pipe 216, where it is filtered through the filter plate 217. To remove the collection box 5 and the quartz sand powder inside, simply open the flap 7 and remove the collection box 5 from the base support shell 4.

[0058] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0059] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A quartz sand crushing and pulverizing device, comprising a roller mechanism (1), a dust removal mechanism (2) and a pulverizing mechanism (3), characterized in that: The roller mechanism (1) comprises a feed box (101), and two crushing rollers (102) are symmetrically rotated and arranged on the inner wall of the feed box (101); The crushing mechanism (3) comprises a crushing box (301) fixedly connected to the lower surface of the feed box (101), two limit plates (302) are fixed between the front and rear inner walls of the crushing box (301), two movable rods (303) are slidably provided on the surface of the limit plates (302), the top ends of the four movable rods (303) are fixedly connected to the material guide inclined plates (304), and the bottom ends of the movable rods (303) are fixedly connected to the sand pressing plates (305), and the lower surface of the sand pressing plates (305) are fixedly connected to a plurality of bar-shaped tooth blocks (306), a crushing bottom plate (307) is symmetrically fixedly provided on the inner wall of the crushing box (301), and a plurality of bar-shaped crushing holes (308) are opened on the surface of the crushing bottom plate (307), the positions of the bar-shaped crushing holes (308) correspond to the bar-shaped tooth blocks (306), and the sizes of the bar-shaped crushing holes (308) match the bar-shaped tooth blocks (306); The dust removal mechanism (2) comprises a protective cover (201) fixed to the back of the feed box (101), an air inlet box (202) fixed inside the protective cover (201), an air bag (203) fixed inside the air inlet box (202), and a pressing plate (204) fixed on the top of the air bag (203); Two pressing rods (205) are fixedly connected to the upper surface of the pressing plate (204), the top ends of the two pressing rods (205) extend to the outside of the air inlet box (202) and are fixedly connected to a linkage push plate (206), the surface of the pressing rod (205) is sleeved with a compression spring (207), the top end of the compression spring (207) is fixedly connected to the lower surface of the linkage push plate (206), the left and right sides of the air inlet box (202) are fixedly embedded with exhaust pipes (208), one end of the exhaust pipe (208) away from the air inlet box (202) extends to the inside of the feed box (101), and is fixed with an air injection pipe (209), the surface of the air injection pipe (209) is evenly distributed with a plurality of air injection nozzles (210), the air outlet of the air injection nozzle (210) corresponds to the position of the crushing roller (102); One end of each of the two crushing rollers (102) is fixedly connected to a linkage shaft (103), one end of the linkage shaft (103) away from the crushing roller (102) extends to the outside of the feed box (101), and is fixedly connected to an eccentric cam (104), the position of the eccentric cam (104) corresponds to the linkage push plate (206), and the two eccentric cams (104) are both overlapped with the upper surface of the linkage push plate (206); A rotating shaft is fixed to the other end of each of the two crushing rollers (102), and a driving gear (106) and a driven gear (107) are respectively fixed to the ends of the two rotating shafts; A first synchronous wheel (110) is fixedly provided on the surface of the driven gear (107); a transmission rod (309) is rotatably provided on the inner wall of the crushing box (301); one end of the transmission rod (309) extends to the outside of the crushing box (301) and is fixedly connected to a second synchronous wheel (313); a transmission belt (220) is installed between the first synchronous wheel (110) and the second synchronous wheel (313); The transmission rod (309) is located directly below the material guide inclined plate (304), and two linkage cams (310) are fixedly connected to the surface of the transmission rod (309). A lifting plate (311) is fixedly connected between the four movable rods (303). The linkage cams (310) overlap the upper surface of the lifting plate (311). A return spring (312) is sleeved on the surface of the movable rod (303). The top end of the return spring (312) is fixedly connected to the lower surface of the lifting plate (311), and the bottom end of the return spring (312) is fixedly connected to the upper surface of the limit plate (302). A limit through hole matching the movable rod (303) is opened on the surface of the limit plate (302), and the movable rod (303) is slidably connected to the inner wall of the limit through hole.

2. A quartz sand crushing and pulverizing device according to claim 1, characterized in that: A one-way exhaust valve (211) is fixedly provided on the surface of the jet pipe (209), an air inlet end of the exhaust pipe (208) extends to the interior of the airbag (203), and the exhaust pipe (208) is fixedly connected to the surface of the airbag (203), an air inlet pipe (212) is fixedly provided on the surface of the airbag (203), an air inlet end of the air inlet pipe (212) extends to the exterior of the air inlet box (202), and a one-way air inlet valve (213) is fixedly provided on the surface of the air inlet pipe (212).

3. The quartz sand crushing and pulverizing device according to claim 1, characterized in that: A driving box (105) is fixedly provided on the front of the feed box (101), one end of each of the two rotating shafts extends into the interior of the driving box (105), the driving gear (106) is meshed with the driven gear (107), a driving motor (108) is fixed inside the driving box (105), a transmission gear (109) is fixed to the rotating shaft of the driving motor (108), and the transmission gear (109) is meshed with the driving gear (106).

4. The quartz sand crushing and pulverizing device according to claim 1, characterized in that: The guide inclined plate (304) is in an inverted V-shaped structure, and the guide inclined plate (304) is located directly below the two crushing rollers (102). Two sliding plates (111) are symmetrically arranged on the inner side of the top of the feed box (101), and the sliding plates (111) are located above the crushing rollers (102). A base support shell (4) is fixedly arranged at the bottom of the crushing box (301), and a collection box (5) is placed inside the base support shell (4). A rectangular drop opening (6) is opened on the upper surface of the base support shell (4), and the position of the rectangular drop opening (6) corresponds to the collection box (5), and the rectangular drop opening (6) is located directly below the two crushing bottom plates (307). A material removal port is opened on the front of the base support shell (4), and a flip plate (7) is rotatably arranged on the outside of the material removal port.

5. The quartz sand crushing and pulverizing device according to claim 1, characterized in that: The dust removal mechanism (2) further comprises a dust collecting box (214) fixed on both sides of the crushing box (301), and a dust suction pump (215) fixedly mounted on both sides of the feed box (101), an air suction pipe (216) fixedly mounted on the input end of the dust suction pump (215), the input end of the air suction pipe (216) extending into the interior of the dust collecting box (214), a filter screen (217) fixedly mounted on the inner wall of the dust collecting box (214), and an air inlet of the air suction pipe (216) located above the filter screen (217).

6. The quartz sand crushing and pulverizing device according to claim 5, characterized in that: A plurality of dust suction holes (218) are provided on the side of the crushing box (301), and the plurality of dust suction holes (218) are evenly distributed on the surface of the crushing box (301) in a linear array, and the positions of the dust suction holes (218) correspond to the dust collection box (214). A sand retaining net (219) is fixed to the inner wall of the crushing box (301), and the position of the sand retaining net (219) corresponds to the dust suction holes (218).

7. A quartz sand crushing and pulverizing device according to claim 6, characterized in that: The crushing bottom plate (307) and the sand pressing plate (305) are both in a downwardly inclined state, and the position of the crushing bottom plate (307) corresponds to the sand retaining net (219).

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