Quartz raw material pulverizing device

Abstract

A quartz raw material crushing device, including a hopper and a screening assembly for screening quartz raw materials of different particle sizes, the hopper and the screening assembly including an internal screening assembly, an external screening assembly and a hopper, the internal screening assembly being arranged at the upper part of the external screening assembly, and the external screening assembly being movably connected to the hopper; the internal screening assembly is used for secondary screening of quartz raw materials of different particle sizes, and includes an arc-shaped basket and a rotating bar, the rotating bar being rotatably connected to the inside of the arc-shaped basket; at this time, different crushing devices are arranged at the lower part of the internal screening assembly, and the different crushing devices are used for crushing quartz sand of different particle sizes, respectively, so that the same batch of quartz sand raw materials can be crushed to obtain quartz sand with a relatively uniform particle size distribution, and the screening process steps before crushing are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of quartz raw material crushing technology, specifically referring to a quartz raw material crushing device. Background Technology

[0002] Quartz sand is an important industrial raw material, widely used in glass manufacturing, casting, water treatment, construction, electronics and other fields due to its chemical stability, high temperature resistance and high hardness.

[0003] Quartz sand raw materials typically contain a certain amount of impurities, which may affect its performance and applications. The types and amounts of impurities in quartz sand vary depending on the mining location, processing method, and intended use. Taking iron impurities as an example, iron impurities are usually quite large, ranging from a few micrometers to a few millimeters. Especially in untreated natural quartz sand, larger iron mineral particles can affect the purity of the quartz sand.

[0004] To remove iron impurities, magnetic separation is usually used for sieving. However, this process is ineffective for aluminum impurities or impurities such as calcium and magnesium. If the quartz raw material after magnetic separation but without the removal of other impurities is then crushed, the resulting quartz sand will have low purity. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a quartz raw material crushing device, which at least partially solves the above problems.

[0006] The technical solution adopted by this utility model is as follows: This utility model proposes a quartz raw material crushing device, including a hopper and a screening component. The hopper and screening component are used to screen quartz raw materials of different particle sizes. The hopper and screening component include an internal screening component, an external screening component and a hopper. The internal screening component is located above the external screening component, and the external screening component is movably connected to the hopper. The internal screening component is used for secondary screening of quartz raw materials of different particle sizes. The internal screening component includes an arc-shaped basket and a rotating bar, and the rotating bar is rotatably connected to the inside of the arc-shaped basket. The external screening assembly is used for the initial screening of quartz raw materials of different particle sizes. The external screening assembly includes a bottom moving plate, a driven wheel, a driving wheel, and a shaft hole. The driving wheel is provided with a shaft hole, and the center of the shaft hole does not coincide with the center of the driving wheel. The driven wheel is located in front of the driving wheel, and the bottom moving plate is provided on the upper part of the driven wheel. The bottom moving plate and the driven wheel are rotatably connected.

[0007] Furthermore, the internal screening assembly also includes a fixed frame, feeding slots, a drive shaft, anti-slip grooves, a drive gear, and two feeding plates. The arc-shaped basket is fixedly connected to the fixed frame. Multiple sets of feeding slots are evenly distributed on the arc-shaped basket. The feeding slots are cut to penetrate the entire arc-shaped basket. The front of the arc-shaped basket is provided with a drive shaft. Multiple sets of rotating bars are fixedly connected to the drive shaft. Multiple sets of anti-slip grooves are provided on the upper part of the rotating bars. A drive gear is provided at one end of the drive shaft. Two feeding plates are provided at the lower part of the drive shaft.

[0008] Furthermore, the number of feeding slots is the same as that of the rotating bar, and the width of the feeding slot is the same as that of the rotating bar.

[0009] Furthermore, the external screening assembly also includes an upper moving plate, a fixed plate, an inclined plate, a connecting column, a spring, an upper screening plate, a lower screening plate, and a plug-in plate.

[0010] Furthermore, the upper moving plate is movably connected to the bottom moving plate. The bottom moving plate has a fixed plate at its front and an inclined plate at its front. The inclined plate has two sets of connecting columns in its middle. Springs are provided on the outside of both sets of connecting columns. The bottom moving plate has an upper moving plate at its upper part and an upper screening plate at its upper part. The upper screening plate has a lower screening plate at its lower part. A plug-in plate is snapped into the front of the bottom moving plate.

[0011] Furthermore, the other end of the two sets of connecting columns is connected to the plug-in plate. The upper screening plate is provided with a gap that penetrates the upper screening plate. The lower screening plate is provided with a feeding hole that penetrates the lower screening plate. The connection between the bottom moving plate and the upper moving plate is provided with a fixed shaft hole. The lower part of the lower screening plate is provided with a guide plate, and the guide plate is provided with multiple sets of rotating slots.

[0012] Furthermore, there is a certain angle between the inclined plate and the fixed plate, the angle being between 100° and 120°, and there is a certain angle between the plug-in plate and the bottom moving plate, the degree of which is consistent with the angle between the inclined plate and the fixed plate.

[0013] Furthermore, it also includes a unit housing, a power motor, a base, a power component housing, a roller assembly, a crushing assembly, side baffles, a lower baffle, and a gear set. The unit housing is located at the lower part of the hopper, the power motor is located on one side of the unit housing, the base is located at the bottom of the unit housing, the roller assembly is located inside the unit housing, the crushing assembly is located inside the unit housing, the power component housing is located on one side of the unit housing, the side baffle is located inside the unit housing, the lower baffle is located at the lower part of the crushing assembly, and a gear set is provided at one end of both the roller assembly and the crushing assembly.

[0014] Furthermore, both the upper screening plate and the lower screening plate are movably connected to the inside of the hopper.

[0015] Furthermore, the fixed frame is fixedly connected to the inside of the unit's outer casing.

[0016] The beneficial effects of this utility model by adopting the above structure are as follows: (1) If different crushing devices are installed at the bottom of the internal screening component, and different crushing devices crush quartz sand of different particle sizes respectively, then the same batch of quartz sand raw materials can be crushed to obtain quartz sand with a relatively uniform particle diameter distribution, and the screening process before crushing is reduced.

[0017] (2) When the quartz sand raw material containing impurities is placed on the upper screening plate, as the upper screening plate moves, the raw material on it will gradually pass through the gaps on the upper screening plate. If the size of the impurities is larger than the width of the gaps, the impurities will be blocked by the upper screening plate. The quartz raw material passing through the gaps will fall into the lower screening plate and pass through the feeding holes on the lower screening plate. Finally, it will fall onto the guide plate and be guided to the internal screening components by the guide plate. This process can fully ensure that the impurities and the quartz raw material are crushed together, thereby improving the purity of the processed quartz raw material. Attached Figure Description

[0018] Figure 1 This is a front view of a quartz raw material crushing device according to an embodiment of the present invention; Figure 2 This is a perspective view of a quartz raw material crushing device proposed in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the internal structure of a quartz raw material crushing device according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of a quartz raw material crushing device proposed in an embodiment of the present utility model from another perspective. Figure 5 This is a schematic diagram of the internal screening component proposed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the external screening component proposed in an embodiment of the present invention.

[0019] Among them, 1. hopper and screening assembly, 2. unit shell, 3. power motor, 4. base, 5. power assembly shell, 6. roller assembly, 7. crushing assembly, 8. side baffle, 9. lower baffle, 10. gear set, 11. internal screening assembly, 12. external screening assembly, 13. hopper; 111. Fixed frame, 112. Arc-shaped basket, 113. Feeding slot, 114. Drive shaft, 115. Rotating bar, 116. Anti-slip groove, 117. Drive gear, 118. Double feeding plate; 121. Bottom moving plate; 122. Upper moving plate; 123. Driven wheel; 124. Driving wheel; 125. Shaft hole; 126. Fixed plate; 127. Inclined plate; 128. Connecting column; 129. Spring; 1210. Upper screening plate; 1211. Gap; 1212. Lower screening plate; 1213. Feeding hole; 1214. Guide plate; 1215. Rotating slot; 1216. Insertion plate; 1217. Fixed shaft hole.

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, this utility model proposes a quartz raw material crushing device, including a hopper and a screening component 1. The hopper and screening component 1 are used to screen quartz raw materials of different particle sizes. The hopper and screening component 1 includes an internal screening component 11, an external screening component 12 and a hopper 13. The internal screening component 11 is located above the external screening component 12, and the external screening component 12 is movably connected to the hopper 13. The internal screening component 11 is used for secondary screening of quartz raw materials of different particle sizes. The internal screening component 11 includes an arc-shaped basket 112 and a rotating bar 115, and the rotating bar 115 is rotatably connected to the inside of the arc-shaped basket 112. The external screening assembly 12 is used for the initial screening of quartz raw materials of different particle sizes. The external screening assembly 12 includes a bottom moving plate 121, a driven wheel 123, a driving wheel 124, and a shaft hole 125. The driving wheel 124 is provided with a shaft hole 125, and the center of the shaft hole 125 does not coincide with the center of the driving wheel 124. The driven wheel 123 is located at the front of the driving wheel 124, and the bottom moving plate 121 is provided on the upper part of the driven wheel 123. The bottom moving plate 121 and the driven wheel 123 are rotatably connected.

[0024] like Figure 5 As shown, the internal screening assembly 11 also includes a fixed frame 111, feeding slots 113, a drive shaft 114, anti-slip grooves 116, a drive gear 117, and two feeding plates 118. The arc-shaped basket 112 is fixedly connected to the fixed frame 111. Multiple sets of feeding slots 113 are evenly distributed on the arc-shaped basket 112. The feeding slots 113 are cut to penetrate the entire arc-shaped basket 112. The front of the arc-shaped basket 112 is provided with a drive shaft 114. Multiple sets of rotating bars 115 are fixedly connected to the drive shaft 114. Multiple sets of anti-slip grooves 116 are provided on the upper part of the rotating bars 115. A drive gear 117 is provided at one end of the drive shaft 114. Two feeding plates 118 are provided on the lower part of the drive shaft 114.

[0025] like Figure 5 As shown, the number of feeding slots 113 is the same as that of the rotating bar 115, and the width of the feeding slots 113 is the same as that of the rotating bar 115.

[0026] In this embodiment, the quartz sand is generally obtained by mechanically crushing and screening larger quartz ore. The particle size is usually between a few micrometers and a few millimeters. Common particle size distributions are as follows: Coarse sand: Particle diameter between 0.5 and 2 mm, commonly used in construction, concrete, casting and other industries; Medium sand: Particle diameter between 0.25 and 0.5 mm, widely used in glass manufacturing, building mortar, etc. Fine sand: Particle diameter between 0.075 and 0.25 mm, commonly used in water treatment, precision casting, etc. Ultrafine sand: Particles with a diameter of less than 0.075 mm are used in some special applications, such as high-end glass manufacturing.

[0027] Since a drive gear 117 is provided at one end of the drive shaft 114, the drive gear 117 can be connected to other external power sources to enable the drive gear 117 to obtain power, and then the drive gear 117 can be rotated through the power source. When the drive gear 117 starts to rotate, the drive gear 117 will drive the drive shaft 114 to rotate.

[0028] Multiple sets of rotating bars 115 are fixedly connected to the drive shaft 114. When the drive shaft 114 rotates under external influence, it will drive the multiple sets of rotating bars 115 to rotate. Since the number of sets of feeding slots 113 is the same as the number of rotating bars 115, and the width of feeding slots 113 is the same as the width of rotating bars 115, after the drive shaft 114 drives the multiple sets of rotating bars 115 to rotate, the multiple sets of rotating bars 115 will move in a circle around the drive shaft 114 as the center, and the rotating bars 115 will pass through the feeding slots 113 during rotation.

[0029] The external screening component 12 performs preliminary screening of the quartz raw material. After screening, the raw material is conveyed to the internal screening component 11 and finally falls into the arc-shaped basket 112. At this time, because there are multiple sets of feeding slots 113 evenly distributed on the arc-shaped basket 112, and as can be seen from the above-mentioned quartz sand particle size, if the width of the feeding slot 113 is less than 2 mm, the quartz sand particles with a diameter greater than 2 mm will stay inside the arc-shaped basket 112, while the quartz sand particles with a diameter smaller than the width of the feeding slot 113 will slide out of the feeding slot 113 and fall to one side of the two feeding plates 118. Finally, the two feeding plates 118 guide the raw material to other parts.

[0030] At this time, as the drive shaft 114 drives the multiple sets of rotating bars 115 on it to rotate, and the rotating bars 115 are lifted from the feeding slit 113, and the distance between each set of rotating bars 115 is also less than 2 mm, when the rotating bars 115 are lifted, the quartz sand that stays inside the arc-shaped basket 112 will be "hooked" by the multiple sets of rotating bars 115, and as the rotating bars 115 continue to move, the quartz sand will be removed from the arc-shaped basket 112.

[0031] The rotating bar 115 is also arc-shaped. When the rotating bar 115 rotates to a certain angle, the quartz sand particles on it will start to roll and eventually roll off the rotating bar 115, causing the quartz sand to fall onto the other side of the two feeding plates 118. Finally, the larger quartz sand particles are transported to other parts through the two feeding plates 118.

[0032] Quartz raw material crushing is the process of crushing and grinding natural quartz ore or quartz sand through mechanical means. The purpose is to transform it into smaller particles or powder for easier subsequent processing and application. Different crushing methods will result in different particle diameters. Since quartz raw materials are mostly natural quartz ore, which is itself a block of varying sizes, placing quartz sand of different particle sizes in the same crushing device will inevitably result in quartz sand of varying sizes obtained in the subsequent crushing process.

[0033] If different crushing devices are provided at the bottom of the internal screening component 11, and the different crushing devices crush quartz sand of different particle sizes respectively, then the same batch of quartz sand raw materials can be crushed to obtain quartz sand with a relatively uniform particle diameter distribution, and the screening process before crushing is reduced.

[0034] like Figure 6 As shown, the external screening assembly 12 also includes an upper moving plate 122, a fixed plate 126, an inclined plate 127, a connecting column 128, a spring 129, an upper screening plate 1210, a lower screening plate 1212, and a plug-in plate 1216.

[0035] like Figure 6 As shown, the upper moving plate 122 is movably connected to the bottom moving plate 121. The bottom moving plate 121 has a fixed plate 126 at its front and an inclined plate 127 at its front. The inclined plate 127 has two sets of connecting columns 128 in its middle. Both sets of connecting columns 128 have springs 129 on their exterior. The bottom moving plate 121 has an upper moving plate 122 at its upper part and an upper screening plate 1210 at its upper part. The upper screening plate 1210 has a lower screening plate 1212 at its lower part. The bottom moving plate 121 has a plug-in plate 1216 snapped into its front.

[0036] like Figure 6 As shown, the other end of the two sets of connecting columns 128 is connected to the plug-in plate 1216. The upper screening plate 1210 is provided with a gap 1211, which penetrates the upper screening plate 1210. The lower screening plate 1212 is provided with a feeding hole 1213, which penetrates the lower screening plate 1212. The connection between the bottom moving plate 121 and the upper moving plate 122 is provided with a fixed shaft hole 1217. The lower part of the lower screening plate 1212 is provided with a guide plate 1214, which is provided with multiple sets of rotating slots 1215.

[0037] like Figure 6 As shown, there is a certain angle between the inclined plate 127 and the fixed plate 126, which ranges from 100° to 120°. There is also a certain angle between the plug-in plate 1216 and the bottom moving plate 121, which is the same as the angle between the inclined plate 127 and the fixed plate 126.

[0038] In this embodiment, based on the principle of eccentric circular rotation, it is known that in eccentric circular rotation, the center (or center of mass) of an object rotates around a fixed axis while also moving along a circular trajectory. The characteristic of this rotation is that there is a fixed offset between the rotation axis of the object and the center of mass of the object. Eccentric circular rotation will induce centrifugal force, causing the object to be subjected to non-uniform external force, resulting in vibration or frictional changes.

[0039] Because the drive wheel 124 is provided with a shaft hole 125, and the center of the shaft hole 125 and the center of the drive wheel 124 do not coincide, when the external power source inserts the power shaft into the shaft hole 125 and rotates it, the drive wheel 124 will rotate accordingly. As can be seen from the above principle of eccentric circle rotation, the drive wheel 124 will eventually generate a periodic vibration force when it rotates.

[0040] The driven wheel 123 is located at the front of the driving wheel 124. When the driving wheel 124 rotates, it generates a periodic vibration force, which is then transmitted to the driven wheel 123. The driven wheel 123 has a bottom moving plate 121 on its upper part. The bottom moving plate 121 and the driven wheel 123 are rotatably connected. When the vibration force is transmitted to the driven wheel 123, the bottom moving plate 121 will eventually vibrate because the driven wheel 123 is connected to the bottom moving plate 121.

[0041] At this time, the bottom moving plate 121 is engaged with the plug-in plate 1216 at the front. As the bottom moving plate 121 vibrates, it will also drive the plug-in plate 1216 to vibrate. The connecting post 128 is connected to the plug-in plate 1216, and the connecting post 128 is equipped with springs 129 on its exterior. Finally, due to the vibration of the plug-in plate 1216, the plug-in plate 1216 drives the connecting post 128 to vibrate. The vibration of the connecting post 128 will cause the springs 129 on its exterior to accumulate elastic potential energy.

[0042] The other end of the connecting column 128 is connected to the inclined plate 127, which is connected to the fixed plate 126. If the fixed plate 126 is fixed in a certain place, the inclined plate 127 connected to the fixed plate 126 will not vibrate, thereby allowing the continuously transmitted vibration force to accumulate into the elastic potential energy of the spring 129.

[0043] As the driving wheel 124 rotates continuously, its center of mass will continuously move closer to or further away from the driven wheel 123. When the center of mass moves away from the driven wheel 123, the vibration force transmitted from the driving wheel 124 disappears. At this time, the elastic potential energy of the spring 129 is released, which will cause other parts connected to the spring 129 to produce a "shaking" effect.

[0044] During the above-mentioned movement, the bottom moving plate 121 will always be in a state of vibration or shaking, and it will not be stationary. The upper moving plate 122 connected to the bottom moving plate 121 will move along with the bottom moving plate 121. The upper screening plate 1210 is connected to the upper moving plate 122. When the upper moving plate 122 moves, it will drive the upper screening plate 1210 to move.

[0045] When the quartz sand raw material containing impurities is placed on the upper screening plate 1210, as the upper screening plate 1210 moves, the raw material on it will gradually pass through the gap 1211 on the upper screening plate 1210. If the size of the impurity is larger than the width of the gap 1211, the impurity will be blocked by the upper screening plate 1210. The quartz raw material passing through the gap 1211 will fall into the lower screening plate 1212, and through the feeding hole 1213 on the lower screening plate 1212, it will finally fall onto the guide plate 1214 and be guided by the guide plate 1214 to the internal screening component 11. This process can fully ensure that the impurities and the quartz raw material are crushed together, thereby improving the purity of the processed quartz raw material.

[0046] like Figure 1 and Figure 2 As shown, it also includes a unit housing 2, a power motor 3, a base 4, a power component housing 5, a roller assembly 6, a crushing assembly 7, a side baffle 8, a lower baffle 9, and a gear set 10. The unit housing 2 is located at the lower part of the hopper 13, the power motor 3 is located on one side of the unit housing 2, the base 4 is located at the bottom of the unit housing 2, the roller assembly 6 is located inside the unit housing 2, the crushing assembly 7 is located inside the unit housing 2, the power component housing 5 is located on one side of the unit housing 2, the side baffle 8 is located inside the unit housing 2, the lower baffle 9 is located at the lower part of the crushing assembly 7, and a gear set 10 is provided at one end of both the roller assembly 6 and the crushing assembly 7.

[0047] like Figure 3 and Figure 4 As shown, the upper screening plate 1210 and the lower screening plate 1212 are both movably connected to the inside of the hopper 13.

[0048] The fixed frame 111 is fixedly connected to the inside of the unit housing 2.

[0049] In this embodiment, the power motor 3 can provide power to the gear set 10, causing the gear set 10 to rotate. Both the roller assembly 6 and the crushing assembly 7 are equipped with gear sets 10 at one end. When the gear set 10 rotates, the roller assembly 6 and the crushing assembly 7 start to work. At this time, the quartz raw materials guided by the two feeding plates 118 will have larger particles enter the crushing assembly 7 for further crushing, while smaller particles will enter the roller assembly 6 and be crushed.

[0050] The operator can pour the raw materials into the hopper 13, and the upper screening plate 1210 and the lower screening plate 1212 in the hopper 13 will perform preliminary screening to filter impurities.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0053] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A quartz raw material crushing device, characterized in that: It includes a hopper and a screening assembly (1), which is used to screen quartz raw materials of different particle sizes. The hopper and screening assembly (1) includes an internal screening assembly (11), an external screening assembly (12) and a hopper (13). The internal screening assembly (11) is located on the upper part of the external screening assembly (12), and the external screening assembly (12) is movably connected to the hopper (13). The internal screening component (11) is used for secondary screening of quartz raw materials of different particle sizes. The internal screening component (11) includes an arc-shaped basket (112) and a rotating bar (115). The rotating bar (115) is rotatably connected to the inside of the arc-shaped basket (112). The external screening assembly (12) is used for the initial screening of quartz raw materials of different particle sizes. The external screening assembly (12) includes a bottom moving plate (121), a driven wheel (123), a driving wheel (124), and a shaft hole (125). The driving wheel (124) is provided with a shaft hole (125). The driven wheel (123) is located at the front of the driving wheel (124). The bottom moving plate (121) is provided on the upper part of the driven wheel (123). The bottom moving plate (121) and the driven wheel (123) are rotatably connected.

2. The quartz raw material crushing device according to claim 1, characterized in that: The internal screening component (11) also includes a fixed frame (111), feeding slots (113), a drive shaft (114), anti-slip grooves (116), a drive gear (117), and two feeding plates (118). The arc-shaped basket (112) is fixedly connected to the fixed frame (111). Multiple feeding slots (113) are evenly distributed on the arc-shaped basket (112). The feeding slots (113) are cut to penetrate the entire arc-shaped basket (112). The front of the arc-shaped basket (112) is provided with a drive shaft (114). Multiple rotating bars (115) are fixedly connected to the drive shaft (114). Multiple anti-slip grooves (116) are provided on the upper part of the rotating bars (115). A drive gear (117) is provided at one end of the drive shaft (114). Two feeding plates (118) are provided on the lower part of the drive shaft (114).

3. The quartz raw material crushing device according to claim 2, characterized in that: The number of feeding slots (113) is the same as that of the rotating bar (115), and the width of the feeding slots (113) is the same as that of the rotating bar (115).

4. The quartz raw material crushing device according to claim 1, characterized in that: The external screening assembly (12) also includes an upper moving plate (122), a fixed plate (126), an inclined plate (127), a connecting column (128), a spring (129), an upper screening plate (1210), a lower screening plate (1212), and a plug-in plate (1216). The center of the shaft hole (125) and the center of the drive wheel (124) do not coincide.

5. The quartz raw material crushing device according to claim 4, characterized in that: The upper moving plate (122) is movably connected to the bottom moving plate (121). The bottom moving plate (121) has a fixed plate (126) at the front and an inclined plate (127) at the front. The inclined plate (127) has two sets of connecting columns (128) in the middle. The two sets of connecting columns (128) are equipped with springs (129) on the outside. The bottom moving plate (121) has an upper moving plate (122) at the top. The upper moving plate (122) has an upper screening plate (1210) at the top. The upper screening plate (1210) has a lower screening plate (1212) at the bottom. The bottom moving plate (121) has a plug-in plate (1216) snapped into the front.

6. The quartz raw material crushing device according to claim 5, characterized in that: The other end of the two sets of connecting columns (128) is connected to the plug-in plate (1216). The upper screening plate (1210) is provided with a gap (1211) that penetrates the upper screening plate (1210). The lower screening plate (1212) is provided with a feeding hole (1213) that penetrates the lower screening plate (1212). The connection between the bottom moving plate (121) and the upper moving plate (122) is provided with a fixed shaft hole (1217). The lower part of the lower screening plate (1212) is provided with a guide plate (1214) and the guide plate (1214) is provided with multiple sets of rotating slots (1215).

7. The quartz raw material crushing device according to claim 4, characterized in that: The inclined plate (127) and the fixed plate (126) have a certain angle between them, which ranges from 100° to 120°. The plug-in plate (1216) and the bottom moving plate (121) have a certain angle between them, which is consistent with the angle between the inclined plate (127) and the fixed plate (126).

8. The quartz raw material crushing device according to claim 1, characterized in that: It also includes a unit housing (2), a power motor (3), a base (4), a power component housing (5), a roller assembly (6), a crushing assembly (7), a side baffle (8), a lower baffle (9), and a gear set (10). The unit housing (2) is located at the lower part of the hopper (13), the power motor (3) is located on one side of the unit housing (2), the base (4) is located at the bottom of the unit housing (2), the roller assembly (6) is located inside the unit housing (2), the crushing assembly (7) is located inside the unit housing (2), the power component housing (5) is located on one side of the unit housing (2), the side baffle (8) is located inside the unit housing (2), the lower baffle (9) is located at the lower part of the crushing assembly (7), and a gear set (10) is provided at one end of both the roller assembly (6) and the crushing assembly (7).

9. The quartz raw material crushing device according to claim 4, characterized in that: The upper screening plate (1210) and the lower screening plate (1212) are both movably connected to the inside of the hopper (13).

10. The quartz raw material crushing device according to claim 2, characterized in that: The fixed frame (111) is fixedly connected to the inside of the unit casing (2).

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