Quartz sand crushing and pulverizing device

Abstract

The invention discloses a quartz sand crushing and powdering device, and relates to the technical field of crushing equipment, the quartz sand crushing and powdering device comprises a double-roller mechanism, a dust removal mechanism and a crushing mechanism, the double-roller mechanism comprises a feeding box, and two crushing rollers are symmetrically and rotatably arranged on the inner wall of the feeding box; the smashing mechanism comprises a smashing box fixedly connected to the lower surface of the feeding box, two limiting plates are fixed between the front inner wall and the rear inner wall of the smashing box, two movable rods are arranged on the surfaces of the limiting plates in a sliding mode, and the top ends of the four movable rods are fixedly connected with a material guiding inclined plate. By arranging the double-roller mechanism and the crushing mechanism, the efficient crushing and pulverizing capacity is achieved, and by arranging the two crushing rollers in the double-roller mechanism, quartz sand can be effectively and preliminarily crushed. And a sand pressing plate and a strip-shaped tooth block in the crushing mechanism are matched with strip-shaped crushing holes in a crushing bottom plate, so that the quartz sand is further crushed into powder, and the crushing and powder making efficiency is improved.

Description

Technical Field

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

[0002] As an important industrial raw material, quartz sand is widely used in many fields such as glass manufacturing, ceramic production, building materials, and the electronics industry. In the processing of quartz sand, crushing and powder making are two key steps, and their efficiency and effect directly affect the quality and production cost of the final product.

[0003] In the field of patents, although there have been some technical improvements for quartz sand crushing and powder making devices, such as the patent document "A Quartz Sand Crushing and Powder Making Device" with the publication number CN118080124A, there are still some areas to be optimized in this device. The comparative patent mainly improves the crushing efficiency and fineness control by adding a screening device and optimizing the crushing chamber structure, but there is still room for improvement in terms of automation level, dust treatment, and energy consumption control at the same time. And it cannot effectively remove the fine dust generated during the crushing process; meanwhile, the linkage between the crushing and powder making processes is not strong, requiring more manual intervention, which affects the production efficiency and operation convenience.

[0004] In view of the above problems, the present invention proposes a new type of quartz sand crushing and powder making device, aiming to realize an efficient, low-consumption, and environmentally friendly quartz sand crushing and powder making process by optimizing the designs of the crushing mechanism, pulverizing mechanism, and dust removal mechanism. Summary of the Invention

[0005] The purpose of the present invention is to provide a quartz sand crushing and powder making device to solve the problems raised in the above background art. The present invention not only improves the crushing efficiency and fineness control, but also effectively reduces the energy consumption and dust pollution through an automated linkage mechanism and an efficient dust treatment system, providing a more advanced technical solution for the processing of quartz sand.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A quartz sand crushing and powder making device, including a pair of roll mechanism, a dust removal mechanism, and a pulverizing mechanism. The pair of roll mechanism includes a feeding box, and two crushing rolls are symmetrically and rotatably arranged on the inner wall of the feeding box; The pulverizing mechanism includes a pulverizing box fixedly connected to the lower surface of the feeding box. Two limiting plates are fixed between the front and rear inner walls of the pulverizing box. Two movable rods are slidably arranged on the surface of the limiting plates. The tops of the four movable rods are fixedly connected to a guiding inclined plate, and the bottoms of the movable rods are fixedly connected to a sand pressing plate. A plurality of strip-shaped tooth blocks are fixedly connected to the lower surface of the sand pressing plate. Crushing bottom plates are symmetrically and fixedly arranged on the inner wall of the pulverizing box. A plurality of strip-shaped crushing holes are formed on the surface of the crushing bottom plates. The positions of the strip-shaped crushing holes correspond to the strip-shaped tooth blocks, and the sizes of the strip-shaped crushing holes match the strip-shaped tooth blocks; The dust removal mechanism includes a protective cover fixed to the back of the feed box. An air inlet box is fixed inside the protective cover. An airbag is fixed inside the air inlet box. A pressing plate is fixed to the top of the airbag.

[0007] Preferably, two pressing rods are fixedly connected to the upper surface of the pressing plate. The tops of the two pressing rods both extend to the outside of the air inlet box and are fixedly connected to a linkage push plate. A compression spring is sleeved on the surface of the pressing rod. The top of the compression spring is fixedly connected to the lower surface of the linkage push plate. Exhaust pipes are fixedly embedded on both the left and right sides of the air inlet box. One end of the exhaust pipe away from the air inlet box extends into the feed box and is fixed with a jet pipe. A number of jet nozzles are evenly arranged on the surface of the jet pipe. The air outlet of the jet nozzle corresponds to the position of the crushing roller.

[0008] Preferably, a one-way exhaust valve is fixedly arranged on the surface of the jet pipe. The air inlet end of the exhaust pipe extends into the airbag and is fixedly connected to the surface of the airbag. An air inlet pipe is fixed to 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 arranged on the surface of the air inlet pipe.

[0009] Preferably, one end of each of the two crushing rollers is fixedly connected to a linkage shaft rod. The end of the linkage shaft rod away from the crushing roller extends to the outside of the feed box and is fixedly connected to an eccentric cam. The position of the eccentric cam corresponds to that of the linkage push plate, and both eccentric cams are in contact with the upper surface of the linkage push plate.

[0010] Preferably, a drive box is fixedly arranged on the front of the feed box. The other ends of the two crushing rollers are both fixed with rotating shafts. One ends of the two rotating shafts both extend into the drive box, and a drive gear and a driven gear are respectively fixed to the ends of the two rotating shafts. The drive gear meshes with the driven gear. A drive motor is fixed inside the drive box. A transmission gear is fixed to the rotating shaft of the drive motor. The transmission gear meshes with the drive gear. A first synchronous wheel is fixedly arranged on the surface of the driven gear. A transmission rod is rotatably arranged 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 a second synchronous wheel. A transmission belt is installed between the first synchronous wheel and the second synchronous wheel.

[0011] Preferably, the transmission rod is located directly below the material guiding inclined plate, and two linkage cams are fixedly connected to the surface of the transmission rod. A lifting plate is fixedly connected between the four movable rods. The linkage cams are in contact with the upper surface of the lifting plate. 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 limiting plate. The limiting plate is provided with a limiting through hole matching the movable rod, and the movable rod is slidably connected to the inner wall of the limiting through hole.

[0012] Preferably, the material guiding inclined plate is in an inverted V-shaped structure and is located directly below the two crushing rollers. Two sliding plates are symmetrically arranged on the inner side of the top of the feeding box. The sliding plates are located above the crushing rollers. The bottom of the crushing box is fixedly provided with a base support shell. A collection box is placed inside the base support shell. A rectangular blanking port is opened on the upper surface of the base support shell. The position of the rectangular blanking port corresponds to the collection box and is located directly below the two crushing bottom plates. A material taking port is opened on the front of the base support shell, and a turning baffle is rotatably arranged outside the material taking port.

[0013] Preferably, the dust removal mechanism further includes dust collection boxes fixed on both sides of the crushing box and dust suction pumps fixedly installed on both sides of the feeding box. An air suction pipe is fixedly installed at the input end of the dust suction pump. The input end of the air suction pipe extends into the interior of the dust collection box. A filter screen plate is fixedly installed on the inner wall of the dust collection box. The air inlet of the air suction pipe is located above the filter screen plate.

[0014] Preferably, a plurality of dust suction holes are opened on the side surface of the crushing box. The plurality of dust suction holes are evenly distributed in a linear array on the surface of the crushing box, and the positions of the dust suction holes correspond to the dust collection boxes. A sand blocking net is fixed on the inner wall of the crushing box, and the position of the sand blocking net corresponds to the dust suction holes.

[0015] Preferably, both the crushing bottom plate and the sand pressing plate are in a downward inclined state, and the position of the crushing bottom plate corresponds to the sand blocking net.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) For this quartz sand crushing and powder making device, by setting the pair-roller mechanism and the crushing mechanism, high-efficiency crushing and powder making capabilities are achieved. By setting the two crushing rollers in the pair-roller mechanism, the quartz sand can be effectively crushed initially. The sand pressing plate and the strip-shaped tooth blocks in the crushing mechanism cooperate with the strip-shaped crushing holes on the crushing bottom plate to further finely crush the quartz sand into powder, improving the efficiency of crushing and powder making.

[0017] (2) In this quartz sand crushing and powder making device, by setting the retaining drive rod, the first synchronous pulley, the second synchronous pulley and the drive belt, automation and linkage are achieved. The crushing rollers rotate relative to each other through the drive motor and the transmission gears, and at the same time are linked with components such as the drive rod and the linkage cam, ensuring the stable operation of the device. The components such as the drive rod and the linkage cam in the crushing mechanism are linked with the crushing mechanism, realizing the automatic feeding and fine crushing process of quartz sand and reducing manual operation.

[0018] (3) In this quartz sand crushing and powder making device, by setting the dust removal mechanism, the air bag in the dust removal mechanism generates air flow inside the feeding box through the pressing plate and the linkage push plate and sprays out through the air nozzles on the surface of the air injection pipe. It can not only clean the sand material adsorbed on the surface of the crushing roller by the high-speed air flow, but also use the dust suction pump and the dust suction holes to suck the dust generated in the crushing box into the dust collection box, effectively removing the dust generated during the crushing process. Brief Description of the Drawings

[0019] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the interior of the drive box of the present invention; Figure 4 It is a structural schematic diagram of the interior of the protective cover of the present invention; Figure 5 It is a front sectional structural schematic diagram of the present invention; Figure 6 It is a structural schematic diagram of the interiors of the feeding box and the crushing box of the present invention; Figure 7 is Figure 4 an enlarged structural schematic diagram at A in Figure 8 is Figure 5 an enlarged structural schematic diagram at B in Figure 9 is Figure 6 an enlarged structural schematic diagram at C in In the figure: 1, double-roll mechanism; 2, dust removal mechanism; 3, crushing mechanism; 4, base support shell; 5, collection box; 6, rectangular blanking port; 7, turning baffle; 101, feeding box; 102, crushing roller; 103, linkage shaft rod; 104, eccentric cam; 105, drive box; 106, drive gear; 107, driven gear; 108, drive motor; 109, transmission gear; 110, first synchronous pulley; 111, sliding plate; 201, protective cover; 202, air intake box; 203, airbag; 204, pressing plate; 205, pressing rod; 206, linkage push plate; 207, compression spring; 208, exhaust pipe; 209, air jet pipe; 210, air jet nozzle; 211, one-way exhaust valve; 212, intake pipe; 213, one-way intake valve; 214, dust collection box; 215, dust suction pump; 216, dust suction pipe; 217, filter screen plate; 218, dust suction hole; 219, sand blocking net; 220, drive belt 301, crushing box; 302, limiting plate; 303, movable rod; 304, material guiding inclined plate; 305, sand pressing plate; 306, strip-shaped tooth block; 307, crushing bottom plate; 308, strip-shaped crushing holes; 309, drive rod; 310, linkage cam; 311, lifting plate; 312, return spring; 313, second synchronous pulley Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-9 , the present invention provides a quartz sand crushing and powder making device to solve the problems of low crushing efficiency, serious dust pollution, and low automation degree in the prior art.

[0022] To achieve the above object, the present invention adopts the following technical solutions: A quartz sand crushing and powder making device includes a pair of roll mechanism 1, a dust removal mechanism 2, and a crushing mechanism 3. Among them, the pair of roll mechanism 1 is used for preliminary crushing of quartz sand, the dust removal mechanism 2 is used for removing dust generated during the crushing process, and the crushing mechanism 3 is used for further finely crushing the preliminarily crushed quartz sand into powder.

[0023] It should be noted that the pair of roll mechanism 1 includes a feeding box 101, and two crushing rolls 102 are symmetrically and rotatably arranged on the inner wall of the feeding box 101. A certain gap is formed between the two crushing rolls 102 for accommodating and crushing quartz sand. The surface of the crushing roll 102 is provided with protruding crushing teeth to enhance the crushing effect.

[0024] On the front of the feed box 101, a drive box 105 is fixedly arranged, and a drive motor 108 is fixed inside the drive box 105. A transmission gear 109 is fixed on the rotating shaft of the drive motor 108, and the transmission gear 109 meshes with the drive gear 106. At the other ends of the two crushing rollers 102, rotating shafts are respectively fixed, and one end of each rotating shaft extends into the drive box 105 and is respectively fixed with a drive gear 106 and a driven gear 107. The drive gear 106 meshes with the driven gear 107 to realize the synchronous rotation of the two crushing rollers 102.

[0025] In addition, at one end of each of the two crushing rollers 102, a linkage shaft rod 103 is fixedly connected. The end of the linkage shaft rod 103 far from the crushing roller 102 extends to the outside of the feed box 101 and is fixedly connected with 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 lapped on the upper surface of the linkage push plate 206. In this way, when the crushing roller 102 rotates, the eccentric cam 104 will push the linkage push plate 206 to move up and down, providing power for the dust removal mechanism 2.

[0026] It should be noted that the dust removal mechanism 2 includes a protective cover 201 fixed on 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 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 pressing rods 205 extend to the outside of the air inlet box 202 and are fixedly connected with a linkage push plate 206. A compression spring 207 is sleeved on the surface of the pressing rod 205, and the top end of the compression spring 207 is fixedly connected to the lower surface of the linkage push plate 206.

[0027] Exhaust pipes 208 are fixedly embedded on both the left and right sides of the air inlet box 202. The air inlet ends of the exhaust pipes 208 extend into the air bag 203 and are fixedly connected to the surface of the air bag 203. The distal ends of the exhaust pipes 208 extend into the feed box 101 and are fixed with jet pipes 209. A number of jet nozzles 210 are evenly arranged on the surface of the jet pipes 209, and the air outlet of the jet nozzle 210 corresponds to the position of the crushing roller 102. A one-way exhaust valve 211 is also fixedly arranged on the surface of the jet pipe 209 to ensure the unidirectional flow of air.

[0028] An air inlet pipe 212 is also fixedly arranged on the surface of the air bag 203. The air inlet end of the air inlet pipe 212 extends to the outside of the air inlet box 202 and is fixedly provided with a one-way air inlet valve 213. In this way, when it is necessary to inflate the air bag 203, an external air source can enter the air bag 203 through the air inlet pipe 212 and the one-way air inlet valve 213.

[0029] When the crushing roller 102 rotates, the eccentric cam 104 pushes the linkage push plate 206 to move up and down. The linkage push plate 206 compresses the airbag 203 through the pressing rod 205, so that the gas inside the airbag 203 is ejected from the jet nozzle 210 through the exhaust pipe 208 and the jet pipe 209. The high-speed air flow can not only clean the sand adhered to the surface of the crushing roller 102, but also disperse the dust inside the feed box 101.

[0030] It should be further noted that the dust removal mechanism 2 further includes dust collection boxes 214 fixed on both sides of the crushing box 301, and dust suction pumps 215 fixedly installed on both sides of the feed box 101. An air suction pipe 216 is fixedly installed at the input end of the dust suction pump 215, and the input end of the air suction pipe 216 extends to the inside of the dust collection box 214. A filter screen plate 217 is fixedly installed 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 plate 217. In this way, the dust suction pump 215 can suck the 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 plate 217.

[0031] It is worth noting that the crushing mechanism 3 includes a crushing box 301 fixedly connected to the lower surface of the feed box 101. Two limiting plates 302 are fixed between the front and rear inner walls of the crushing box 301, and two movable rods 303 are slidably arranged on the surface of the limiting plates 302. The tops of the four movable rods 303 are fixedly connected with a material guiding inclined plate 304. The material guiding inclined plate 304 is in an inverted V-shaped structure and is located directly below the two crushing rollers 102. The bottom ends of the movable rods 303 are fixedly connected with a sand pressing plate 305, and a plurality of strip-shaped tooth blocks 306 are fixedly connected to the lower surface of the sand pressing plate 305.

[0032] Crushing bottom plates 307 are symmetrically and fixedly arranged on the inner wall of the crushing box 301, and a plurality of strip-shaped crushing holes 308 are formed on the surface of the crushing bottom plates 307. The positions of the strip-shaped crushing holes 308 correspond to the strip-shaped tooth blocks 306, and the sizes of the strip-shaped crushing holes 308 match the strip-shaped tooth blocks 306. When the sand pressing plate 305 moves downward, the strip-shaped tooth blocks 306 will be inserted into the strip-shaped crushing holes 308 to finely crush the quartz sand.

[0033] It should be noted that a transmission rod 309 is rotatably arranged 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 with a second synchronous wheel 313. A first synchronous wheel 110 is fixedly arranged on the surface of the driven gear 107, and a transmission belt 220 is installed between the first synchronous wheel 110 and the second synchronous wheel 313. In this way, when the driving motor 108 drives the crushing roller 102 to rotate, the transmission rod 309 will be driven to rotate through the transmission belt 220.

[0034] The transmission rod 309 is located directly below the material guiding 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, and the linkage cam 310 is lapped with 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 limiting plate 302. The surface of the limiting plate 302 is provided with a limiting through hole matching the movable rod 303, and the movable rod 303 is slidably connected to the inner wall of the limiting through hole.

[0035] When the transmission rod 309 rotates, the linkage cam 310 will push the lifting plate 311 to move up and down, thereby driving the movable rod 303, the material guiding inclined plate 304, and the sand pressing plate 305 to move up and down. When the sand pressing plate 305 moves downward, the strip-shaped tooth block 306 will be inserted into the strip-shaped crushing hole 308 to finely crush the quartz sand; when the sand pressing plate 305 moves upward, the return spring 312 will pull it back to its original position to prepare for the next fine crushing operation.

[0036] It should be noted that two sliding plates 111 are symmetrically arranged inside the top of the feeding box 101. The sliding plates 111 are located above the crushing rollers 102 and are used to guide the quartz sand into the space between the crushing rollers 102. A base support shell 4 is fixedly arranged at the bottom of the crushing box 301. A collection box 5 is placed inside the base support shell 4 and is used to collect the finely crushed quartz sand powder. A rectangular blanking port 6 is opened on the upper surface of the base support shell 4. The position of the rectangular blanking port 6 corresponds to that of the collection box 5 and is located directly below the two crushing bottom plates 307. A material taking port is opened on the front surface of the base support shell 4, and a turning baffle 7 is rotatably arranged outside the material taking port to facilitate taking out the collection box 5 and the quartz sand powder therein.

[0037] A plurality of dust suction holes 218 are also opened on the side surface of the crushing box 301. The dust suction holes 218 are uniformly distributed in a linear array on the surface of the crushing box 301 and correspond to the dust collection box 214. A sand blocking net 219 is fixed to the inner wall of the crushing box 301. The position of the sand blocking net 219 corresponds to that of the dust suction holes 218 and is used to block the quartz sand powder from entering the dust suction holes 218.

[0038] Both the crushing bottom plate 307 and the sand pressing plate 305 are in a downward inclined state. The position of the crushing bottom plate 307 corresponds to that of the sand blocking net 219. In this way, the finely crushed quartz sand powder can slide into the collection box 5 along the crushing bottom plate 307 and the sand pressing plate 305, and at the same time, the sand blocking net 219 can block larger quartz sand particles from entering the dust suction holes 218.

[0039] Working principle: When in use, first start the drive motor 108. The drive motor 108 drives the rotation of two crushing rolls 102 through a transmission gear 109 and a drive gear 106. Quartz sand enters the interior of the feed box 101 through the feed inlet and is initially crushed between the two crushing rolls 102.

[0040] Meanwhile, the rotation of the crushing roll 102 pushes the linkage push plate 206 to move up and down through a linkage shaft rod 103 and an eccentric cam 104. The linkage push plate 206 compresses the airbag 203 through a pressing rod 205, so that the gas inside the airbag 203 is ejected from the jet nozzle 210 through an exhaust pipe 208 and a jet pipe 209. The high-speed airflow cleans the sand adhered to the surface of the crushing roll 102 and blows away the dust inside the feed box 101.

[0041] The initially crushed quartz sand enters the interior of the pulverizing box 301 through a guiding inclined plate 304. Meanwhile, the drive motor 108 drives the rotation of a transmission rod 309 through a transmission belt 220. The rotation of the transmission rod 309 pushes a lifting plate 311 to move up and down through a linkage cam 310, and further drives a movable rod 303, a guiding inclined plate 304 and a sand pressing plate 305 to move up and down. When the sand pressing plate 305 moves downward, the strip-shaped tooth block 306 is inserted into the strip-shaped pulverizing hole 308 to finely crush the quartz sand.

[0042] The finely crushed quartz sand powder slides into the collection box 5 through a pulverizing bottom plate 307 and the sand pressing plate 305. Meanwhile, a dust suction pump 215 sucks the dust generated inside the pulverizing box 301 into a dust collection box 214 through a suction pipe 216 and filters it through a filter screen plate 217. When it is necessary to take out the collection box 5 and the quartz sand powder therein, just open the turning baffle 7 and take out the collection box 5 from the base support shell 4.

[0043] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the mature conventional means such as bolts, rivets and welding in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0044] The above describes the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural modes and embodiments without creative efforts without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A quartz sand crushing and powder making device, comprising a pair of roll mechanisms (1), a dust removal mechanism (2) and a crushing mechanism (3), characterized in that: The pair of roll mechanisms (1) includes a feeding box (101), and two crushing rolls (102) are symmetrically and rotatably arranged on the inner wall of the feeding box (101); The crushing mechanism (3) includes a crushing box (301) fixedly connected to the lower surface of the feeding box (101). Two limiting plates (302) are fixed between the front and rear inner walls of the crushing box (301). Two movable rods (303) are slidably arranged on the surface of the limiting plates (302). The tops of the four movable rods (303) are fixedly connected to a guiding inclined plate (304), and the bottoms of the movable rods (303) are fixedly connected to a sand pressing plate (305). A plurality of strip-shaped tooth blocks (306) are fixedly connected to the lower surface of the sand pressing plate (305). Crushing bottom plates (307) are symmetrically and fixedly arranged on the inner wall of the crushing box (301). A plurality of strip-shaped crushing holes (308) are formed on the surface of the crushing bottom plates (307). The positions of the strip-shaped crushing holes (308) correspond to those of the strip-shaped tooth blocks (306), and the sizes of the strip-shaped crushing holes (308) match those of the strip-shaped tooth blocks (306); The dust removal mechanism (2) includes a protective cover (201) fixed to the back of the feeding box (101). An air inlet box (202) is fixed inside the protective cover (201). An air bag (203) is fixed inside the air inlet box (202). A pressing plate (204) is fixed to the top of the air bag (203).

2. A quartz sand crushing and powder making device according to claim 1, characterized in that: Two pressing rods (205) are fixedly connected to the upper surface of the pressing plate (204). The tops 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). A compression spring (207) is sleeved on the surface of the pressing rod (205). The top of the compression spring (207) is fixedly connected to the lower surface of the linkage push plate (206). Exhaust pipes (208) are fixedly embedded on both the left and right sides of the air inlet box (202). The ends of the exhaust pipes (208) far from the air inlet box (202) extend into the feeding box (101) and are fixed with jet pipes (209). A plurality of jet nozzles (210) are evenly arranged on the surface of the jet pipes (209). The air outlets of the jet nozzles (210) correspond to the positions of the crushing rolls (102).

3. A quartz sand crushing and powder making device according to claim 2, characterized in that: A one-way exhaust valve (211) is fixedly arranged on the surface of the jet pipe (209). The intake ends of the exhaust pipes (208) extend into the air bag (203), and the exhaust pipes (208) are fixedly connected to the surface of the air bag (203). An intake pipe (212) is fixedly arranged on the surface of the air bag (203). The intake end of the intake pipe (212) extends to the outside of the air inlet box (202), and a one-way intake valve (213) is fixedly arranged on the surface of the intake pipe (212).

4. The quartz sand crushing and powder making device according to claim 3, characterized in that: One end of each of the two crushing rollers (102) is fixedly connected with a linkage shaft rod (103). The end of the linkage shaft rod (103) far from the crushing roller (102) extends to the outside of the feed box (101) and is fixedly connected with an eccentric cam (104). The position of the eccentric cam (104) corresponds to that of the linkage push plate (206), and both of the two eccentric cams (104) are lapped on the upper surface of the linkage push plate (206).

5. A quartz sand crushing and powder making device according to claim 4, characterized in that: A drive box (105) is fixedly arranged on the front surface of the feed box (101). The other end of each of the two crushing rollers (102) is fixed with a rotating shaft. One end of each of the two rotating shafts extends into the drive box (105), and a drive gear (106) and a driven gear (107) are respectively fixed at the end parts of the two rotating shafts. The drive gear (106) meshes with the driven gear (107). A drive motor (108) is fixedly arranged inside the drive box (105). A transmission gear (109) is fixed on the rotating shaft of the drive motor (108). The transmission gear (109) meshes with the drive gear (106). A first synchronous pulley (110) is fixedly arranged on the surface of the driven gear (107). A transmission rod (309) is rotatably arranged 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 with a second synchronous pulley (313). A transmission belt (220) is installed between the first synchronous pulley (110) and the second synchronous pulley (313).

6. The quartz sand crushing and powder making device according to claim 5, characterized in that: The transmission rod (309) is located directly below the material guiding 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) are lapped on 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 with the lower surface of the lifting plate (311), and the bottom end of the return spring (312) is fixedly connected with the upper surface of the limiting plate (302). A limiting through hole matching the movable rod (303) is formed in the surface of the limiting plate (302). The movable rod (303) is slidably connected with the inner wall of the limiting through hole.

7. A quartz sand crushing and powder making device according to claim 1, characterized in that: The material guiding inclined plate (304) is in an inverted V-shaped structure, and the material guiding 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 feeding 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), a collection box (5) is placed inside the base support shell (4), a rectangular blanking port (6) is formed on the upper surface of the base support shell (4), the position of the rectangular blanking port (6) corresponds to that of the collection box (5), and the rectangular blanking port (6) is located directly below the two crushing bottom plates (307). A material taking port is formed on the front surface of the base support shell (4), and a turning baffle (7) is rotatably arranged outside the material taking port.

8. A quartz sand crushing and powder making device according to claim 1, characterized in that: The dust removal mechanism (2) further includes dust collection boxes (214) fixed on both sides of the crushing box (301), and dust suction pumps (215) fixedly installed on both sides of the feeding box (101). An air suction pipe (216) is fixedly installed at the input end of the dust suction pump (215), the input end of the air suction pipe (216) extends into the interior of the dust collection box (214), a filter screen plate (217) is fixedly installed 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 plate (217).

9. A quartz sand crushing and powder making device according to claim 8, characterized in that: A plurality of dust suction holes (218) are formed on the side surface of the crushing box (301), the plurality of dust suction holes (218) are uniformly distributed in a straight line array on the surface of the crushing box (301), and the positions of the dust suction holes (218) correspond to those of the dust collection boxes (214). A sand blocking net (219) is fixed on the inner wall of the crushing box (301), and the position of the sand blocking net (219) corresponds to that of the dust suction holes (218).

10. A quartz sand crushing and powder making device according to claim 9, characterized in that: Both the crushing bottom plate (307) and the sand pressing plate (305) are in a downward inclined state, and the position of the crushing bottom plate (307) corresponds to that of the sand blocking net (219).

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