Quartz sand grinding device

Abstract

The present invention relates to the technical field of quartz sand grinding, and specifically discloses a quartz sand grinding device, including a machine body, a mounting cylinder and a grinding roller, the machine body is provided with a driving component 1 for driving the grinding roller to rotate, a filter cylinder is rotatably connected in the mounting cylinder, a filter hole is provided in the filter cylinder, the grinding roller is located in the filter cylinder, a feeding component and a driving component 2 for driving the filter cylinder to rotate are provided on the machine body, a plurality of mounting plates are provided in the filter cylinder, the mounting plates are rotatably connected to the filter cylinder, a rubbing component is slidably connected to the mounting plates, a grinding structure corresponding to each rubbing component is provided on the filter cylinder, the mounting plates are connected with a driving component 3 for driving the rotation thereof, and the rubbing component is connected with a driving component 4 for driving the sliding thereof. The quartz sand grinding device of the present invention can screen unqualified materials, and rub and grind the materials in the process of carrying the unqualified materials back into the grinding roller, thereby improving the grinding efficiency and avoiding the waste of resources.

Description

Technical Field

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

[0002] Quartz sand has the characteristics of high hardness, good stability, and high temperature resistance, and is widely used in many fields. Different application fields have different requirements for the particle size of quartz sand. Therefore, when producing quartz sand, grinding equipment is usually required to grind the quartz sand.

[0003] A Chinese patent with announcement number CN116037257B discloses a roller crushing device for machine-made sand, including a frame, a crushing bin, a crushing roller, a driving mechanism and a tensioning mechanism. The driving mechanism is used to drive the symmetrical crushing rollers to rotate in the crushing bin, and the tensioning mechanism is used to adjust the tension of one of the crushing rollers. A discharge bin is provided below the crushing bin, and a screening and discharging mechanism is provided in the discharge bin. The screening and discharging mechanism includes a fixed bar, an elastic screen, a scraper, an L-shaped slide bar, a tensioning rope, a double-headed motor, a winding drum and a guide plate.

[0004] The elastic screen of the above patent document will screen and filter the crushed machine-made sand. Qualified machine-made sand will fall to the bottom of the discharge bin through the elastic screen, while larger particles of machine-made sand will remain above the elastic screen. The L-shaped slide bar will drive the scraper to slide from left to right on the elastic screen, so that the scraper can scrape the unqualified machine-made sand particles screened on the upper surface of the elastic screen to the discharge port, and then discharge them to the outside of the discharge bin for collection through the guide plate inclined downward at the discharge port.

[0005] Although the above patent document can screen out unqualified machine-made sand materials, if the screened out unqualified materials are not reused, it will inevitably cause a waste of resources. If they are reused, the collected unqualified materials need to be ground again separately, affecting work efficiency. In addition, the unqualified materials may contain quartz sand agglomerates caused by the squeezing of the crushing roller. Even if the agglomerates are ground and crushed again, new agglomerates may be formed during the grinding and crushing process, requiring multiple collection and crushing, which will further reduce work efficiency.

[0006] Therefore, the art needs a quartz sand grinding device to solve the above problems. Summary of the invention

[0007] The present invention provides a quartz sand grinding device, aiming to solve the problem that the grinding device in the related art cannot timely perform secondary grinding on the unqualified quartz sand materials screened out, and cannot reasonably handle the quartz sand agglomeration, resulting in the problem that the agglomeration is easy to form repeatedly.

[0008] A quartz sand grinding device of the present invention comprises a machine body, a mounting cylinder fixedly mounted on the machine body, and a pair of grinding rollers rotatably connected in the mounting cylinder, a driving component 1 for driving the grinding rollers to rotate is arranged on the machine body, a filter cylinder is rotatably connected in the mounting cylinder, a filter hole for passing qualified quartz sand is opened on the filter cylinder, the grinding roller is located in the filter cylinder, a feeding component extending above the grinding roller and a driving component 2 for driving the filter cylinder to rotate are arranged on the machine body;

[0009] A plurality of mounting plates are evenly arranged along the circumference of the filter cartridge, the mounting plates are rotatably connected to the filter cartridge, the mounting plates extend along the axial direction of the filter cartridge, and a rubbing assembly is slidably connected to the mounting plates, a grinding structure corresponding to each rubbing assembly is arranged on the inner wall of the filter cartridge, a driving assembly three for driving the mounting plates to rotate is connected, and a driving assembly four for driving the rubbing assembly to slide is connected to the mounting plates;

[0010] As the mounting plate rotates from bottom to top following the filter cylinder, drive component three drives the mounting plate to rotate upward toward the inner wall of the filter cylinder until the material rubbing assembly contacts the grinding structure. Drive component four drives the material rubbing assembly to move relative to the grinding structure. When the mounting plate moves to above the grinding roller, drive component three drives the mounting plate to drive the material rubbing assembly to move in the direction away from the grinding structure.

[0011] The present invention cooperates with the rubbing component and the grinding component, which can not only carry the screened unqualified quartz sand materials to the top of the grinding roller to grind the unqualified quartz sand materials again, but also rub and grind the unqualified quartz sand materials in the process of carrying the unqualified quartz sand materials upward, so that the quartz sand lumps therein are quickly dispersed and discharged in time, and some of the quartz sand materials are ground to be qualified and discharged in time, thereby improving the grinding efficiency and avoiding the waste of resources.

[0012] Preferably, a dividing plate is provided below the grinding roller, and filter holes for qualified quartz sand to pass through are also provided on the dividing plate. The dividing plate is installed on the side wall of the mounting cylinder and is inclined. The quartz sand ground by the grinding roller falls onto the dividing plate, and the qualified quartz sand material falls from the filter holes of the dividing plate to the filter cylinder, and the unqualified quartz sand material rolls along the dividing plate to the position where the filter cylinder rotates from bottom to top.

[0013] By separating unqualified quartz sand materials from qualified quartz sand materials, it is beneficial to discharge qualified quartz sand materials from the filter cartridge in time, and it is also beneficial to concentrate unqualified quartz sand materials between the upwardly moving rubbing component and the corresponding grinding structure, so that the unqualified quartz sand materials can be quickly processed.

[0014] Preferably, the rubbing assembly includes a rubbing plate and a plurality of rubbing strips arranged on the rubbing plate. The rubbing plate is slidably connected to the mounting plate. The rubbing strips are arranged on a side of the rubbing plate close to the grinding structure. The rubbing strips extend along the axial direction of the filter cylinder and are distributed at intervals along a direction perpendicular to the axial direction of the filter cylinder. The driving assembly drives the rubbing plate to reciprocate along the distribution direction of the rubbing strips.

[0015] Preferably, the grinding structure includes a plurality of grinding groups spaced apart along the circumference of the filter cartridge, each grinding group includes a plurality of grinding strips spaced apart along the axial direction of the filter cartridge, the grinding strips extend along the axial direction of the filter cartridge and are fixedly connected to the inner wall of the filter cartridge, and when the rubbing plate reciprocates, the rubbing strips and the grinding strips rub and grind unqualified quartz sand materials.

[0016] By arranging the grinding bars to be distributed at intervals along the axial direction of the filter cartridge, it is not only beneficial to crush unqualified quartz sand materials, but also enables the unqualified quartz sand materials to move along the gaps between the grinding bars toward the direction close to the rotating axis of the mounting plate, thereby accelerating the dispersion of the unqualified materials.

[0017] Preferably, one end of the dividing plate tilted upward is rotatably connected to the side wall of the mounting tube, an elastic member is hinged at the bottom of the dividing plate, and the other end of the elastic member is hinged to the side wall of the mounting tube.

[0018] Preferably, the driving component four includes a spring and a ridge, the two ends of the spring are respectively connected to the rubbing plate and the mounting plate, and the direction of the elastic force of the spring is the same as the sliding direction of the rubbing plate. The ridge is arranged on the side of the rubbing plate away from the rubbing strip, and the ridges are spaced apart along the sliding direction of the rubbing plate. When the ridge contacts the downward inclined end of the dividing plate, the dividing plate pushes the ridge to drive the rubbing plate to move along the mounting plate until the ridge passes over the dividing plate.

[0019] Preferably, a baffle is fixedly connected to one end of the dividing plate that is tilted downward, and the baffle is perpendicular to the bottom of the dividing plate. The baffle pushes the convex ridges to drive the rubbing plate to move.

[0020] Preferably, the rubbing strip is elastically connected to the rubbing board along a direction perpendicular to the rubbing board.

[0021] When a piece of quartz sand between the rubbing plate and the grinding structure is larger, the corresponding rubbing strip can move into the installation groove, which will not affect the coordination between other rubbing strips and the grinding structure, and can also avoid damage to the rubbing strips and the grinding structure during the rubbing and grinding process.

[0022] Preferably, driving component three includes an arc-shaped rack and an incomplete gear. The arc-shaped rack is fixedly mounted on the side wall of the mounting cylinder. The mounting plate is rotatably connected to the filter cylinder through a rotating shaft, and a torsion spring is provided at the rotating connection. When the mounting plate is not subjected to external force, the material rubbing assembly and the corresponding grinding structure do not contact each other. When the incomplete gear is meshed with the arc-shaped rack, the incomplete gear drives the mounting plate to rotate until the material rubbing assembly contacts the corresponding grinding structure. When the mounting plate moves to above the grinding roller, the incomplete gear disengages from the contact with the arc-shaped rack, and the mounting plate is reset under the action of the torsion spring.

[0023] Preferably, the feed assembly includes a feed hopper arranged on one side of the mounting cylinder and an auger arranged in the feed hopper, the auger extends to the top of the grinding roller, and guide plates are arranged on both sides of the auger, the guide plates are fixedly connected to the side walls of the mounting cylinder, and the bottoms of the two guide plates are provided with guide portions inclined in a direction approaching each other, and when the mounting plate passes above the grinding roller, the rubbing strip contacts the guide plate.

[0024] The guide part of the guide plate forms a structure that converges toward the middle at the bottom of the auger, which is conducive to the quartz sand falling between the two grinding rollers; the rubbing bar contacts and collides with the guide plate, which is conducive to the quartz sand material adhering to the rubbing bar and the rubbing plate falling off.

[0025] The beneficial effects of the present invention are as follows: through the cooperation of the rubbing component and the grinding component, the present invention can not only carry the screened unqualified quartz sand material to the top of the grinding roller, so that the unqualified quartz sand material can be ground again, but also in the process of carrying the unqualified quartz sand material upward, the unqualified quartz sand material can be rubbed and ground, so that the quartz sand lumps therein can be quickly dispersed and discharged in time, and some of the quartz sand materials can be ground to be qualified and discharged in time, thereby improving the grinding efficiency and avoiding the waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a schematic diagram of the overall structure of a quartz sand grinding device of the present invention.

[0027] Figure 2 It is a cross-sectional view of a quartz sand grinding device of the present invention.

[0028] Figure 3 The present invention is a schematic structural diagram of a filter cartridge of a quartz sand grinding device.

[0029] Figure 4 The present invention is a schematic assembly diagram of a mounting plate and a rubbing material component of a quartz sand grinding device from a first viewing angle.

[0030] Figure 5 It is a schematic assembly diagram of a mounting plate and a rubbing material component of a quartz sand grinding device of the present invention from a second viewing angle.

[0031] Figure 6 The invention discloses a cross-sectional view of a mounting plate and a rubbing material assembly of a quartz sand grinding device.

[0032] Figure 7 The present invention is a cross-sectional view of a filter cartridge and its internal structure of a quartz sand grinding device.

[0033] Figure 8 yes Figure 7 A partial enlarged view of part A.

[0034] Fig. 9 The present invention is a schematic diagram of an incomplete gear and an arc-shaped rack of a quartz sand grinding device.

[0035] Reference numerals:

[0036] 1. Machine body; 11. Motor 1; 12. Drive belt; 13. Drive wheel; 2. Mounting cylinder; 21. Discharge port; 3. Grinding roller; 4. Filter cylinder; 41. Filter hole; 42. Grinding strip; 5. Feed hopper; 51. Auger; 52. Guide plate; 53. Guide unit; 6. Mounting plate; 61. Mounting slot; 62. Incomplete gear; 7. Dividing plate; 71. Elastic telescopic rod; 72. Baffle; 8. Rubbing plate; 80. Rubbing strip; 81. Belly plate; 82. Side plate 1; 83. Side plate 2; 84. Mounting slot; 85. Spring; 86. Convex ridge; 9. Arc rack. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] like Figures 1 to 9 As shown, and Figure 1 The direction indicated by the middle shear head is clockwise. A quartz sand grinding device of the present invention comprises a machine body 1, a mounting cylinder 2 fixedly mounted on the machine body 1, and a pair of grinding rollers 3 rotatably connected in the mounting cylinder 2. A driving component 1 for driving the grinding rollers 3 to rotate is arranged on the machine body 1. The grinding rollers 3 are rotatably connected to the side wall of the mounting cylinder 2, and the rotating shafts of the two grinding rollers 3 extend outside the mounting cylinder 2. Meshing gears (not shown in the figure) are fixedly connected to the rotating shafts of the two grinding rollers 3. The driving component 1 comprises a motor 11, a transmission wheel 13 and a transmission belt 12. The motor 11 is fixedly mounted on the machine body 1. The transmission wheel 13 is fixedly mounted on the output end of the motor 11 and the rotating shaft of one of the grinding rollers 3. The transmission belt 12 is arranged around the two transmission wheels 13. The motor 11 drives the two grinding rollers 3 to rotate through the cooperation of the transmission wheel 13 and the transmission belt 12 to achieve the grinding of quartz sand.

[0039] like Figure 2 and Figure 3 As shown, a filter cartridge 4 is rotatably connected in the mounting cylinder 2, and a filter hole 41 for qualified quartz sand to pass through is provided on the filter cartridge 4, and the grinding roller 3 is located in the filter cartridge 4. A feed assembly extending to the top of the grinding roller 3 and a drive assembly 2 for driving the filter cartridge 4 to rotate are provided on the machine body 1. The feed assembly includes a feed hopper 5 provided at the rear side of the mounting cylinder 2 and an auger 51 provided in the feed hopper 5, and the auger 51 extends to the top of the grinding roller 3. Guide plates 52 are provided on both sides of the auger 51, and the guide plates 52 are fixedly connected to the side walls of the mounting cylinder 2, and the bottoms of the two guide plates 52 are provided with guide portions 53 inclined toward the direction close to each other. Quartz sand enters from the feed hopper 5 and is transported to the filter cartridge 4 through the auger 51. The guide portion 53 of the guide plate 52 forms a structure that gathers toward the middle at the bottom of the auger 51, which is conducive to the quartz sand falling between the two grinding rollers 3.

[0040] The driving assembly 2 includes a motor 2 (not shown in the figure), a gear (not shown in the figure) and a ring gear (not shown in the figure). The motor 2 is fixedly mounted on the mounting barrel 2, the gear is fixedly connected to the output end of the motor 2, the ring gear is fixedly connected to the outer periphery of the filter barrel 4, the gear and the ring gear are meshed, and the motor 2 drives the gear to drive the ring gear and the filter barrel 4 to rotate clockwise. The mounting barrel 2 is provided with a discharge port 21, and qualified quartz sand materials will fall from the filter holes 41 of the filter barrel 4 to the discharge port 21 for discharge.

[0041] A plurality of mounting plates 6 are evenly arranged along the circumference of the filter cartridge 4. The mounting plates 6 are rotatably connected to the filter cartridge 4. The mounting plates 6 extend along the axial direction of the filter cartridge 4, and a rubbing assembly is slidably connected to the mounting plates 6. A grinding structure corresponding to each rubbing assembly is arranged on the inner wall of the filter cartridge 4. The mounting plates 6 are connected to a driving assembly 3 for driving the rotation thereof, and the rubbing assembly is connected to a driving assembly 4 for driving the sliding thereof.

[0042] The quartz sand ground by the grinding roller 3 falls onto the filter cartridge 4 , and the qualified quartz sand material falls from the filter hole 41 to the discharge port 21 for discharge, while the unqualified quartz sand material remains in the filter cartridge 4 . As the mounting plate 6 rotates from bottom to top following the filter cartridge 4, some of the unqualified quartz sand materials at the bottom of the filter cartridge 4 are taken away upward, and the driving component three drives the mounting plate 6 to rotate upward toward the inner wall of the filter cartridge 4 until the rubbing component contacts the grinding structure, first clamping the unqualified quartz sand materials, and the driving component four drives the rubbing component to move relative to the grinding structure, thereby rubbing and grinding the clamped unqualified quartz sand materials. During the rubbing and grinding process, the quartz sand agglomerates will disperse and fall from the filter holes 41 of the filter cartridge 4 to the discharge port 21 for discharge, and the unqualified quartz sand materials that cannot be crushed by the rubbing component and the grinding structure will continue to be clamped and move upward, until the mounting plate 6 moves above the grinding roller 3, the driving component three drives the mounting plate 6 to drive the rubbing component to move in the direction away from the grinding structure, thereby causing the unqualified quartz sand materials clamped by the rubbing component to fall onto the grinding roller 3 and be ground again.

[0043] The present invention cooperates with the rubbing component and the grinding component, which can not only carry the screened unqualified quartz sand material to the top of the grinding roller 3 to grind the unqualified quartz sand material again, but also rub and grind the unqualified quartz sand material in the process of carrying the unqualified quartz sand material upward, so that the quartz sand lumps therein are quickly dispersed and discharged in time, and some of the quartz sand materials are ground to be qualified and discharged in time, thereby improving the grinding efficiency and avoiding the waste of resources.

[0044] like Figure 2 and Figure 8 As shown, a dividing plate 7 is provided below the grinding roller 3, and a filter hole 41 for qualified quartz sand to pass through is also provided on the dividing plate 7. The dividing plate 7 is installed on the side wall of the mounting cylinder 2 and is tilted downward from right to left. The quartz sand ground by the grinding roller 3 falls onto the dividing plate 7, and the qualified quartz sand material falls from the filter hole 41 of the dividing plate 7 to the filter cylinder 4, and the unqualified quartz sand material rolls along the dividing plate 7 to the position where the filter cylinder 4 rotates from bottom to top. By separating the unqualified quartz sand material from the qualified quartz sand material, it is beneficial for the qualified quartz sand material to be discharged from the filter cylinder 4 in time, and it is also beneficial for the unqualified quartz sand material to be concentrated between the upwardly movable rubbing component and the corresponding grinding structure, so that the unqualified quartz sand material can be quickly processed.

[0045] like Figures 4 to 7As shown, the rubbing assembly includes a rubbing plate 8 and a plurality of rubbing strips 80 arranged on the rubbing plate 8. The rubbing plate 8 is in an I-shape, including a web 81 and a side plate 1 82 and a side plate 2 83 fixedly connected to both ends of the web 81. A mounting groove 61 is provided in the middle of the mounting plate 6. The web 81 is located in the mounting groove 61. The side plates 1 82 and the side plates 2 83 are located on both sides of the mounting plate 6 and fit the mounting plate 6. The mounting plate 6 is rotatably connected to the filter cartridge 4 via a rotating shaft. The web 81 can move in the mounting groove 61 along the radial direction of the rotating shaft, that is, the rubbing plate 8 can slide relative to the mounting plate 6 along the radial direction of the rotating shaft.

[0046] The side plate 182 of the rubbing plate 8 is located on a side close to the grinding structure, and the rubbing strips 80 are arranged on the side plate 182. The rubbing strips 80 extend along the axial direction of the filter cartridge 4 and are evenly spaced along the sliding direction of the rubbing plate 8. The side plate 182 is provided with a mounting groove 84 for mounting the rubbing strips 80. The rubbing strips 80 are slidably arranged in the mounting groove 84 along a direction perpendicular to the side plate 182, and are elastically connected to the mounting groove 84 through an elastic member. As an example, the elastic member is a spring. When a certain quartz sand material between the rubbing plate 8 and the grinding structure is large, the corresponding rubbing strip 80 can move into the mounting groove 84, which does not affect the cooperation between other rubbing strips 80 and the grinding structure, and can also prevent the rubbing strips 80 and the grinding structure from being damaged during the rubbing and grinding process.

[0047] like Figure 3 As shown, the grinding structure includes a plurality of grinding groups spaced apart along the circumference of the filter cartridge 4, each grinding group includes a plurality of grinding strips 42 spaced apart along the axial direction of the filter cartridge 4, and the grinding strips 42 extend along the axial direction of the filter cartridge 4 and are fixedly connected to the inner wall of the filter cartridge 4. Figure 6 and Figure 8 As shown, when the rubbing plate 8 reciprocates along the mounting plate 6, the rubbing bars 80 and the grinding bars 42 rub and grind the unqualified quartz sand materials. By arranging the grinding bars 42 to be spaced apart along the axial direction of the filter cartridge 4, it is not only beneficial to crush the unqualified quartz sand materials, but also enables the unqualified quartz sand materials to move along the gaps between the grinding bars 42 toward the direction close to the rotating axis of the mounting plate 6, thereby accelerating the dispersion of the unqualified materials.

[0048] like Figure 7 and Figure 8 As shown, the right end of the material dividing plate 7 is rotatably connected to the side wall of the mounting tube 2, and an elastic member is hinged at the bottom of the material dividing plate 7 near the left end, and the other end of the elastic member is hinged to the side wall of the mounting tube 2. As an example, the elastic member is an elastic telescopic rod 71. When the left end of the material dividing plate 7 is subjected to an upward thrust, the material dividing plate 7 rotates upward and stretches the elastic telescopic rod 71.

[0049] like Figure 6As shown, the drive assembly 4 includes a spring 85 and a convex rib 86, the spring 85 is arranged between the web 81 of the rubbing board 8 and the mounting groove 61 of the mounting plate 6, and the two ends of the spring 85 are respectively fixedly connected to the web 81 and the groove wall of the mounting groove 61. The elastic force direction of the spring 85 is the same as the sliding direction of the rubbing board 8. The convex rib 86 is arranged on the side plate 2 83 of the rubbing board 8, and the convex rib 86 is evenly distributed along the sliding direction of the rubbing board 8.

[0050] like Figures 6 to 8 As shown, a baffle 72 is fixedly connected to the left end of the dividing plate 7. The baffle 72 is perpendicular to the bottom of the dividing plate 7. The end of the baffle 72 and the convex ridge 86 are respectively provided with arc surfaces. The rubbing plate 8 is driven by the mounting plate 6 to rotate until the rubbing strip 80 contacts the grinding strip 42 and continues to follow the upward movement of the filter cartridge 4, and the convex ridge 86 contacts the baffle plate 72, and the baffle plate 72 pushes the convex ridge 86 to drive the rubbing plate 8 to move relative to the mounting plate 6, so that the rubbing strip 80 moves relative to the grinding strip 42, and the unqualified quartz sand material clamped is rubbed and ground. As the thrust of the convex ridge 86 on the baffle plate 72 increases, the convex ridge 86 pushes the baffle plate 72 to drive the dividing plate 7 to rotate upward. After the convex ridge 86 is separated from the baffle plate 72, the rubbing plate 8 moves in the resetting direction under the elastic force of the spring 85, and at the same time, the elastic telescopic rod 71 pulls the dividing plate 7 to rotate downward and reset, so that the baffle plate 72 contacts the next convex ridge 86 on the rubbing plate 8, and repeatedly pushes the rubbing plate 8, thereby driving the rubbing plate 8 to reciprocate, so that the rubbing strip 80 and the grinding strip 42 repeatedly rub and grind the unqualified quartz sand material, thereby improving the grinding effect and grinding efficiency. In addition, the process of repeatedly pushing and pulling back the dividing plate 7 is also conducive to accelerating the screening of the quartz sand material on the dividing plate 7.

[0051] like Figures 7 to 9 As shown, the drive assembly three includes an arc-shaped rack 9 and an incomplete gear 62, and the arc-shaped rack 9 is fixedly mounted on the side wall of the mounting cylinder 2. A torsion spring (not shown in the figure) is provided at the rotation connection between the rotating shaft of the mounting plate 6 and the filter cylinder 4. When the mounting plate 6 is not subjected to external force, the rubbing assembly and the corresponding grinding structure do not contact each other. When the incomplete gear 62 is meshed with the arc-shaped rack 9, the incomplete gear 62 drives the mounting plate 6 to rotate until the rubbing strips 80 on the rubbing plate 8 contact the corresponding grinding strips 42 on the filter cylinder 4, thereby clamping the unqualified quartz sand material. When the mounting plate 6 moves to the top of the grinding roller 3, the incomplete gear 62 is out of contact with the arc-shaped rack 9, and the mounting plate 6 is reset under the action of the torsion spring, so that the quartz sand material between the rubbing plate 8 and the grinding structure falls onto the grinding roller 3 and is ground again. When the mounting plate 6 moves above the grinding roller 3, the rubbing strips 80 on the rubbing plate 8 will contact and collide with the top of the guide plate 52, which is conducive to the rubbing strips 80 and the rubbing plate 8 to fall off.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A quartz sand grinding device, comprising a body, a mounting cylinder fixedly mounted on the body, and a pair of grinding rollers rotatably connected to the mounting cylinder, wherein a driving assembly 1 for driving the grinding rollers to rotate is arranged on the body, characterized in that: A filter cylinder is also rotatably connected in the installation cylinder, and a filter hole for qualified quartz sand to pass through is opened on the filter cylinder. The grinding roller is located in the filter cylinder, and a feed component extending above the grinding roller and a second drive component for driving the filter cylinder to rotate are arranged on the machine body; A plurality of mounting plates are evenly arranged along the circumference of the filter cartridge, the mounting plates are rotatably connected to the filter cartridge, the mounting plates extend along the axial direction of the filter cartridge, and a rubbing assembly is slidably connected to the mounting plates, a grinding structure corresponding to each rubbing assembly is arranged on the inner wall of the filter cartridge, a driving assembly three for driving the mounting plates to rotate is connected, and a driving assembly four for driving the rubbing assembly to slide is connected to the mounting plates; As the mounting plate rotates from bottom to top following the filter cylinder, drive component three drives the mounting plate to rotate upward toward the inner wall of the filter cylinder until the material rubbing assembly contacts the grinding structure. Drive component four drives the material rubbing assembly to move relative to the grinding structure. When the mounting plate moves to above the grinding roller, drive component three drives the mounting plate to drive the material rubbing assembly to move in the direction away from the grinding structure.

2. The quartz sand grinding device according to claim 1, characterized in that: A dividing plate is arranged below the grinding roller, and filter holes are also opened on the dividing plate for qualified quartz sand to pass through. The dividing plate is installed on the side wall of the mounting cylinder and is inclined. The quartz sand ground by the grinding roller falls onto the dividing plate, and the qualified quartz sand material falls from the filter holes of the dividing plate to the filter cylinder, and the unqualified quartz sand material rolls along the dividing plate to the position where the filter cylinder rotates from bottom to top.

3. The quartz sand grinding device according to claim 2, characterized in that: The rubbing assembly includes a rubbing plate and a plurality of rubbing strips arranged on the rubbing plate. The rubbing plate is slidably connected to the mounting plate. The rubbing strips are arranged on the side of the rubbing plate close to the grinding structure. The rubbing strips extend along the axial direction of the filter cylinder and are distributed at intervals along a direction perpendicular to the axial direction of the filter cylinder. The driving assembly four drives the rubbing plate to reciprocate along the distribution direction of the rubbing strips.

4. The quartz sand grinding device according to claim 3, characterized in that: The grinding structure includes a plurality of grinding groups spaced apart along the circumference of the filter cartridge, each grinding group includes a plurality of grinding strips spaced apart along the axial direction of the filter cartridge, the grinding strips extend along the axial direction of the filter cartridge and are fixedly connected to the inner wall of the filter cartridge, and when the rubbing plate reciprocates, the rubbing strips and the grinding strips rub and grind unqualified quartz sand materials.

5. The quartz sand grinding device according to claim 3, characterized in that: One end of the material dividing plate tilted upward is rotatably connected to the side wall of the mounting tube, an elastic member is hinged at the bottom of the material dividing plate, and the other end of the elastic member is hinged to the side wall of the mounting tube.

6. The quartz sand grinding device according to claim 5, characterized in that: The driving component four includes a spring and a ridge, the two ends of the spring are respectively connected to the rubbing plate and the mounting plate, and the direction of the elastic force of the spring is the same as the sliding direction of the rubbing plate. The ridge is arranged on the side of the rubbing plate away from the rubbing strip, and the ridges are spaced apart along the sliding direction of the rubbing plate. When the ridge contacts the downward inclined end of the dividing plate, the dividing plate pushes the ridge to drive the rubbing plate to move along the mounting plate until the ridge passes over the dividing plate.

7. The quartz sand grinding device according to claim 6, characterized in that: A baffle is fixedly connected to one end of the dividing plate which is inclined downward. The baffle is perpendicular to the bottom of the dividing plate. The baffle pushes the convex ridges to drive the rubbing plate to move.

8. The quartz sand grinding device according to claim 3, characterized in that: The rubbing strip is elastically connected to the rubbing board along a direction perpendicular to the rubbing board.

9. The quartz sand grinding device according to claim 1, characterized in that: Driving component three includes an arc-shaped rack and an incomplete gear. The arc-shaped rack is fixedly installed on the side wall of the mounting cylinder. The mounting plate is rotationally connected to the filter cylinder through a rotating shaft, and a torsion spring is provided at the rotating connection. When the mounting plate is not subjected to external force, the rubbing assembly and the corresponding grinding structure do not contact each other. When the incomplete gear is meshed with the arc-shaped rack, the incomplete gear drives the mounting plate to rotate until the rubbing assembly contacts the corresponding grinding structure. When the mounting plate moves to above the grinding roller, the incomplete gear disengages from the contact with the arc-shaped rack, and the mounting plate is reset under the action of the torsion spring.

10. The quartz sand grinding device according to claim 6, characterized in that: The feed assembly includes a feed hopper arranged on one side of the mounting cylinder and an auger arranged in the feed hopper. The auger extends to the top of the grinding roller. Guide plates are arranged on both sides of the auger. The guide plates are fixedly connected to the side walls of the mounting cylinder. The bottoms of the two guide plates are provided with guide portions inclined in a direction close to each other. When the mounting plate passes above the grinding roller, the rubbing strip contacts the guide plate.

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