Process for preparing ultra-high purity quartz sand by fine crushing and multi-stage purification

Abstract

The application belongs to the technical field of quartz sand processing, in particular to a fine crushing and multi-stage purification process for preparing ultra-high-purity quartz sand, which comprises a machine body, a fixed frame is fixedly connected to the upper surface of the machine body, a feeding port is formed in the fixed frame, a first motor is arranged below the machine body, a crushing roller is drivingly connected to the output end of the first motor, auxiliary plates are fixedly connected to the inner wall of the feeding port on both sides, tooth gears are fixedly connected to one side of the auxiliary plates and staggered with the tooth gears on the circumferential surface of the crushing roller, the auxiliary plates are used for assisting the crushing roller to crush quartz sand, a purification cavity is fixedly connected to the middle of the machine body, and a sieve plate is elastically connected in the purification cavity, through the hooking assembly and the blockage cleaning assembly, the problem that the existing screening is blocked and the screening efficiency is reduced is solved, and the problem that the falling is slow during the screening process is solved.

Description

Technical Field

[0001] This invention belongs to the field of quartz sand processing technology, specifically the fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand. Background Technology

[0002] Quartz sand is a non-metallic mineral, a hard, wear-resistant, and chemically stable silicate mineral. It is an important industrial mineral raw material, a non-hazardous chemical, and is widely used in glass, casting, ceramics and refractory materials, ferrosilicon smelting, metallurgical flux, metallurgy and other industries. The lower the impurities, the better, so quartz sand needs to be crushed and purified before use.

[0003] However, existing quartz sand crushing and purification equipment has a slow screening process during crushing and purification, and usually lacks an automatic cleaning structure, which makes it easy for the crushed quartz sand to get clogged when it is discharged, resulting in a decrease in screening efficiency.

[0004] Therefore, this invention provides a fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this invention to solve its technical problem is: the ultra-high purity quartz sand preparation fine crushing and multi-stage purification process of this invention includes the following steps:

[0007] Step 1: Perform preliminary cleaning on the ultra-high purity quartz sand raw material to be screened, removing large pieces of debris and tangled materials;

[0008] Step 2: The prepared recycled material is evenly fed into the feed inlet (34) of the purification chamber (35), and after being initially crushed by the crushing roller (31), it falls onto the screening plate (36);

[0009] During screening, as the limiting cone (49) follows the rotation of the rotating shaft (32), the limiting cone (49) moves in an elliptical trajectory within the corresponding annular sleeve (41), causing the annular sleeve (41) to drive the screening plate (36) to move along the "elliptical trajectory". During the movement, the screening plate (36) works with the springs (38) at both ends to perform vibrating screening and sorting, thus finely screening the quartz sand raw material.

[0010] Step 3: During the sieving process, the drive rod (39) slides back and forth along the fixed groove (37) in the purification chamber (35). When the rod (39) slides, it uses the sharp shape of the cone (314) to fit with the outlet of the sieve plate (36) to achieve secondary compression and crushing of the blockage, and completes the unblocking of the outlet of the sieve plate (36).

[0011] As a further embodiment of the present invention: a sieve plate (36) with elastic connection is provided in the purification chamber (35), and an auxiliary block (4) is fixedly connected to the lower surface of the sieve plate (36), and an annular sleeve (41) is fixedly connected to the lower surface of the auxiliary block (4).

[0012] The limiting cone (49) is slidably sleeved on the annular sleeve (41), pulling the annular sleeve (41) to move in an elliptical trajectory, and cooperating with the screening plate (36) to elastically reset and perform vibrating screening.

[0013] As a further aspect of the present invention: several springs (38) are fixedly connected to both ends of the screening plate (36). The springs (38) are used to limit the retraction of the cone (49) and automatically reset the screening plate (36) when there is no longer any pulling force on the screening plate (36). The springs (38) can swing continuously, so that the screening plate (36) can swing in a certain arc and can cooperate with the unblocking component to unblock.

[0014] As a further embodiment of the present invention: the rotating shaft (32) rotates to drive the limiting frame (46) to rotate, the limiting frame (46) can slide along the first groove (42), and during the sliding of the limiting frame (46) along the first groove (42), the limiting cone (49) can slide along the second groove (43). After the limiting frame (46) slides along the first groove (42), the electric rod (44) starts to retract and drives the limiting frame (46) to act on the annular sleeve (41) in different directions, causing the screening plate (36) to swing in an annular shape, so that the screening plate (36) continuously vibrates the screen.

[0015] As a further embodiment of the present invention: a limiting groove (47) is provided on both sides of the limiting frame (46), a limiting spring (48) is fixedly connected in the limiting groove (47), a limiting cone (49) is fixedly connected in the limiting spring (48), the limiting cone (49) can slide along the second groove (43), and the limiting cone (49) can pull the annular sleeve (41) during the downward movement of the electric rod (44).

[0016] As a further aspect of the present invention: the fixing rod (39) moves back and forth in the fixing groove (37) on the inner wall of the purification chamber (35), and during the reciprocating movement, the elastic cone block (314) on the lower surface of the fixing rod (39) clears the blockage of the discharge port of the screening plate (36).

[0017] As a further aspect of the present invention: as the fixed rod (39) slides, it contacts and acts on the screening plate (36), and the sharp shape of the cone block (314) and the fit with the outlet of the screening plate (36) are used to achieve secondary extrusion and crushing of the blockage.

[0018] As a further embodiment of the present invention: a connecting groove (312) is provided in the connecting frame (311) on the lower surface of the fixed rod (39), and the cone block (314) is connected to the top wall of the connecting groove (312) through a compression spring (313), so that the cone block (314) has a buffering force in the vertical direction during operation.

[0019] As a further aspect of the present invention: during the resetting process, the plate holes on the surface of the sieve plate (36) will collide with the cone block (314), and the quartz sand stuck in the plate holes of the sieve plate (36) will collide with the cone block (314), and the cone block (314) can push out the quartz sand block stuck in the plate holes.

[0020] As a further embodiment of the present invention: a pusher (310) on one side of the fixed rod (39) is used to push out large pieces of unscreened quartz sand, and a top plate (315) on the other side of the fixed rod (39) is used to push back the large pieces of unscreened quartz sand. A collection groove is provided at the position of the screening plate (36) corresponding to the collection cover (52). The pushed-back top plate (315) can push the large pieces of quartz sand raw material into the collection groove, and from the collection groove, it falls into the collection frame (51) along the collection cover (52).

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The ultra-high purity quartz sand preparation fine crushing and multi-stage purification process of the present invention receives the quartz sand raw material to be crushed and purified through a fixed frame on the machine body. The quartz sand raw material falls into the feed port, and at this time, the first motor drives the crushing roller to rotate. The crushing roller and the teeth on the auxiliary plate are interlocked to achieve the initial crushing of the quartz sand raw material. The crushed quartz sand raw material falls onto the screening plate. The first motor not only drives the crushing roller, but also drives the hook assembly through the transmission mechanism. The hook assembly uses the limiting cone on the rotating shaft. As the limiting cone follows the rotation of the rotating shaft, the limiting cone will drive the corresponding annular sleeve to move in an elliptical trajectory. During the movement of the screening plate along the "elliptical trajectory" driven by the annular sleeve, the screening plate, in conjunction with the springs at both ends, performs vibratory screening and sorting. At the same time, the unblocking component slidably set in the purification chamber cooperates with the vibration of the screening plate to effectively prevent the screen holes from clogging and ensure screening efficiency.

[0023] 2. The ultra-high purity quartz sand preparation fine crushing and multi-stage purification process of the present invention, when the rotating shaft rotates, drives the limiting frame to slide along the first groove, and the limiting cone in the limiting frame slides synchronously in the second groove. The powder screening intensity of the screening plate is adjusted by the extension and retraction of the electric rod. That is, through the coordinated action of the rotating shaft, the limiting frame, the limiting cone and the electric rod, the automatic vibration screening function of the screening plate is realized. No additional power source is required, reducing energy consumption. The continuous reset of the spring and the vibration screening action effectively improve the screening efficiency, making the screening process more efficient and stable. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a perspective view of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic diagram of the discharge port structure of the present invention;

[0027] Figure 3 This is a cross-sectional view of the body of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the spring of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the rotating shaft of the present invention;

[0030] Figure 6 This is a schematic diagram of the connecting rod of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the annular sleeve of the present invention;

[0032] Figure 8 This is a schematic diagram of the cone block of the present invention;

[0033] In the image: 1. Body;

[0034] 2. Support plate; 21. First hydraulic cylinder; 22. Connecting rod; 23. Connecting plate; 24. Connecting column; 25. Push plate;

[0035] 3. First motor; 31. Crushing roller; 32. Rotating shaft; 33. Fixed frame; 34. Feed inlet; 35. Purification chamber; 36. Screening plate; 37. Fixed groove; 38. Spring; 39. Fixed rod; 310. Push block; 311. Connecting frame; 312. Connecting groove; 313. Compression spring; 314. Cone block; 315. Top plate; 316. Discharge port; 317. Auxiliary plate;

[0036] 4. Auxiliary block; 41. Annular sleeve; 42. First groove; 43. Second groove; 44. Electric rod; 45. Limiting rod; 46. Limiting frame; 47. Limiting groove; 48. Limiting spring; 49. Limiting cone;

[0037] 5. Base plate; 51. Collection frame; 52. Collection cover;

[0038] 6. Reciprocating drive mechanism. Detailed Implementation

[0039] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0040] Example 1: As Figures 1 to 8 As shown in the embodiment of the present invention, the ultra-high purity quartz sand preparation fine crushing and multi-stage purification process includes a machine body 1. A fixed frame 33 is fixedly connected to the upper surface of the machine body 1. A feed inlet 34 is opened in the fixed frame 33. A first motor 3 is arranged below the machine body 1. The output end of the first motor 3 drives and connects to a crushing roller 31. Auxiliary plates 317 are fixedly connected to both sides of the inner wall of the feed inlet 34. One side of the auxiliary plate 317 is fixedly connected with teeth that intersect with the teeth on the circumferential surface of the crushing roller 31. The auxiliary plate 317 is used to assist the crushing roller 31 in crushing quartz sand, realizing the crushing treatment of large-size quartz sand, and realizing the purification treatment of converting large-size quartz sand into small-size quartz sand.

[0041] It should be noted that the crushing precision of quartz sand can be adjusted by adjusting the meshing precision of the teeth on the crushing roller 31 and the auxiliary plate 317.

[0042] A purification chamber 35 is fixedly connected to the middle of the machine body 1. A sieve plate 36 with elastic connection is provided in the purification chamber 35. The first motor 3 also drives a hook assembly for vibrating the sieve plate 36. An auxiliary block 4 is fixedly connected to the lower surface of the sieve plate 36. An annular sleeve 41 is fixedly connected to the lower surface of the auxiliary block 4. The first motor 3 is driven by a rotating shaft 32. A limiting cone 49 with elastic connection is provided on the circumference of the rotating shaft 32. The limiting cone 49 is slidably sleeved in the annular sleeve 41.

[0043] The annular sleeve 41 has an elliptical structure, with the major axis of the annular sleeve 41 in the vertical direction and the minor axis of the annular sleeve 41 in the horizontal direction.

[0044] As the limiting cone 49 follows the rotation of the rotating shaft 32, the limiting cone 49 will drive the corresponding annular sleeve 41 to move in an elliptical trajectory, and the vertical movement amplitude of the annular sleeve 41 is greater than the horizontal movement amplitude of the annular sleeve 41.

[0045] During the process of the annular sleeve 41 driving the screening plate 36 to move along the "elliptical trajectory", the screening plate 36 cooperates with the springs 38 at both ends to perform vibrating screening and sorting; the purification chamber 35 is slidably equipped with a blockage clearing component, which cooperates with the elastic reset vibrating screen of the screening plate 36 to perform blockage clearing work.

[0046] Specifically, in the screening process of the quartz sand crushing and purification equipment, the equipment first receives the quartz sand raw material to be crushed and purified through the fixed frame 33 on the machine body 1. The quartz sand raw material falls into the feed inlet 34. At this time, the first motor 3 drives the crushing roller 31 to rotate. The teeth of the crushing roller 31 and the auxiliary plate 317 are interlocked (the meshing accuracy of the teeth of the crushing roller 31 and the auxiliary plate 317 is adjusted according to the required crushing accuracy) to achieve the initial crushing of the quartz sand raw material. The crushed quartz sand raw material falls onto the screening plate 36. The first motor 3 not only drives the crushing roller 31, but also drives the hook assembly through the transmission mechanism. The hook assembly uses the limiting cone 49 on the rotating shaft 32 to be annularly sleeved in the annular sleeve 41 on the lower surface of the screening plate 36. As the limiting cone 49 follows the rotation of the rotating shaft 32, it limits the movement of the crushing roller 31. The cone 49 drives the corresponding annular sleeve 41 to move along an elliptical trajectory. During the movement of the annular sleeve 41 along the elliptical trajectory, the screening plate 36, in conjunction with the springs 38 at both ends, performs vibratory screening and sorting to finely screen the quartz sand raw material. At the same time, the unblocking component slidingly installed in the purification chamber 35 works in conjunction with the vibration of the screening plate 36 to effectively prevent screen hole blockage and ensure screening efficiency. Through the toothed engagement of the crushing roller 31 and the auxiliary plate 317, the initial crushing of the quartz sand raw material is achieved, which facilitates subsequent screening. The ingenious combination of the screening plate 36 with the hook component and the unblocking component not only improves screening efficiency but also ensures screening precision. The elastic reset vibration design of the screening plate 36 effectively avoids the problem of screen hole blockage and extends the service life of the equipment.

[0047] This solves the problem of reduced screening efficiency due to clogging in existing screening methods, and also solves the problem of slow descent during the screening process.

[0048] like Figure 4 As shown, in this embodiment, several springs 38 are fixed to both ends of the screening plate 36. The springs 38 are used to cooperate with the movement of the limiting cone 49 in the annular sleeve 41. The springs 38 can swing continuously, which can make the screening plate 36 swing in an "elliptical trajectory" and can cooperate with the unblocking component to unblock. A support plate 2 is fixed to the middle of the machine body 1. A first hydraulic cylinder 21 is fixed to the upper surface of the support plate 2. A connecting rod 22 is fixed to the output end of the first hydraulic cylinder 21. A connecting plate 23 is fixed to the output end of the connecting rod 22. A connecting column 24 is fixed to one side of the connecting plate 23. A push plate 25 is fixed to the connecting column 24. A discharge port 316 is fixed to one side of the purification chamber 35. The cross-section of the push plate 25 is the same as the inner diameter of the discharge port 316. The push plate 25 can push the smaller quartz sand raw material out of the discharge port 316 to complete the fine screening and purification of the quartz sand raw material.

[0049] Specifically, springs 38 are fixed at both ends of the screening plate 36. The springs 38 are used to cooperate with the movement of the limiting cone 49 in the annular sleeve 41. The springs 38 can swing continuously, which can make the screening plate 36 swing in an "elliptical trajectory" to enhance the screening effect. At the same time, it works in conjunction with the unblocking component to effectively prevent the screen holes from clogging. In addition, on the support plate 2 in the middle of the machine body 1, the first hydraulic cylinder 21 drives the push plate 25 through the connecting rod 22, connecting plate 23 and connecting column 24. The cross section of the push plate 25 is the same as the inner diameter of the discharge port 316 on one side of the purification chamber 35. It can push the smaller quartz sand raw material after screening out of the discharge port 316 to achieve continuous and efficient screening and discharge. This not only realizes the automatic reset of the screening plate 36, but also enhances the swing effect during the screening process, and improves the screening efficiency and accuracy. At the same time, the cooperation between the push plate 25 driven by the first hydraulic cylinder 21 and the discharge port 316 ensures that the quartz sand raw material after screening can be discharged in time, avoiding accumulation and blockage, and further improving the screening efficiency.

[0050] like Figure 7 As shown, the hook assembly in this embodiment also includes a first groove 42 formed on the inner wall of the annular sleeve 41, and second grooves 43 formed on both sides of the inner wall of the first groove 42. An electric rod 44 is fixedly connected to the circumferential surface of the rotating shaft 32. A limiting rod 45 is fixedly connected to the output end of the electric rod 44. A limiting frame 46 is fixedly connected to the top end of the limiting rod 45. A limiting cone 49 is elastically provided inside the limiting frame 46.

[0051] Specifically, the rotating shaft 32 drives the electric rod 44 and the limiting rod 45 to rotate. When the limiting rod 45 enters the first groove 42 of the annular sleeve 41, the limiting cone 49 slides along the second groove 43. Due to its elastic setting, the limiting cone 49 can fit tightly against the edge of the second groove 43 to achieve a stable connection.

[0052] In a specific implementation process, the sieving strength of the screening plate 36 can also be adjusted by extending and retracting the electric rod 44.

[0053] Example 2: Figures 1 to 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the rotating shaft 32 rotates to drive the limiting frame 46 to rotate, and the limiting frame 46 can slide along the first groove 42. During the sliding of the limiting frame 46 along the first groove 42, the limiting cone 49 can slide along the second groove 43. During the rotation of the limiting cone 49 following the rotating shaft 32, the limiting cone 49 will drive the corresponding annular sleeve 41 to move in an elliptical trajectory. During the movement of the annular sleeve 41 driving the screening plate 36 along the "elliptical trajectory", the screening plate 36 cooperates with the springs 38 at both ends to perform vibrating screening and sorting. At this time, the screening plate 36 generates vibrating screening action under the action of the restoring force of the spring 38. Since the spring 38 will not stop immediately, it will swing back and forth continuously, so that the screening plate 36 vibrates continuously, improving the vibrating screening efficiency.

[0054] Specifically, through the coordinated action of the rotating shaft 32, the limiting frame 46, the limiting cone 49 and the electric rod 44, the automatic vibrating screen function of the screening plate 36 is realized, which eliminates the need for an additional power source and reduces energy consumption. The continuous reset of the spring 38 and the vibrating screen action effectively improve the screening efficiency and make the screening process more efficient and stable.

[0055] like Figure 7 As shown, in this embodiment, limit grooves 47 are provided on both sides of the limit frame 46. A limit spring 48 is fixedly connected in the limit groove 47. A limit cone 49 is fixedly connected in the limit spring 48. The limit cone 49 can slide along the second groove 43. The limit cone 49 can pull the annular sleeve 41 during the extension and retraction of the electric rod 44.

[0056] Specifically, the limiting springs 48 fixed in the limiting grooves 47 on both sides of the limiting frame 46 provide stable support and elasticity for the limiting cone 49. During the downward movement of the electric rod 44, the limiting cone 49 slides along the second groove 43, and at the same time, the elastic force of the limiting spring 48 pulls the annular sleeve 41 appropriately to ensure stable hooking.

[0057] like Figure 2 and Figure 8 As shown, the unblocking component in this embodiment includes a fixing groove 37 formed in the inner wall of the purification chamber 35, a fixing rod 39 slidably connected in the fixing groove 37, and a plurality of cone blocks 314 elastically arranged on the lower surface of the fixing rod 39, the cone blocks 314 being used to unblock the screening plate 36.

[0058] Specifically, the fixing rod 39 in the fixing groove 37 can slide along the groove. The cone 314 elastically set on its lower surface contacts and acts on the screening plate 36 as the fixing rod 39 slides. The sharp shape of the cone 314 and its fit with the outlet of the screening plate 36 achieve secondary crushing of the blockage, further improving the crushing effect of the quartz sand. At the same time, it clears the blockage at the upper outlet of the screening plate 36, improving the crushing effect of the quartz sand. That is, through the sliding and elastic action of the cone 314, the screening plate 36 is effectively cleared, improving the screening efficiency. The sharp shape of the cone 314 easily penetrates the blockage, reducing the resistance in the screening process. Meanwhile, the sliding design of the fixing rod 39 allows the cone 314 to flexibly act at different positions of the screening plate 36, ensuring the comprehensiveness and efficiency of crushing and clearing.

[0059] like Figure 8 As shown, in this embodiment, a number of connecting frames 311 are fixedly connected to the lower surface of the fixing rod 39. Each connecting frame 311 has a connecting groove 312. A compression spring 313 is fixedly connected to the top wall of each connecting groove 312. A cone block 314 is fixedly connected to the bottom end of each compression spring 313.

[0060] Specifically, within the connecting frame 311 on the lower surface of the fixed rod 39, the cone block 314, elastically connected by the compression spring 313, can float up and down with the vibration of the screening plate 36. The sharp part of the cone block 314 is used to clear the blockage on the screening plate 36, and the elasticity of the compression spring 313 allows the cone block 314 to flexibly adapt to the vibration of the screening plate 36, ensuring that the cone block 314 always maintains contact with the screening plate 36, effectively improving the unblocking efficiency. At the same time, the sharp shape of the cone block 314 and the elasticity of the compression spring 313 can easily penetrate the blockage, reducing the resistance in the screening process and ensuring the continuity and stability of screening.

[0061] It should be noted that a reciprocating drive mechanism 6 is also provided on the purification chamber 35 for driving the fixed rod 39 to reciprocate along the fixed groove 37 within the chamber.

[0062] The reciprocating drive mechanism 6 includes, but is not limited to, cylinders, reciprocating screws, ratchet and linkage mechanisms, etc., used to realize the reciprocating movement of the fixed rod 39 in the purification chamber 35.

[0063] like Figure 8 As shown, during the resetting process of the sieve plate 36 in this embodiment, the plate holes on the surface of the sieve plate 36 will collide with the cone block 314, and the quartz sand stuck in the plate holes of the sieve plate 36 will collide with the cone block 314. The cone block 314 can push out the quartz sand block stuck in the plate holes.

[0064] Specifically, during the vibration reset process, the holes on the surface of the screening plate 36 will collide with the cone block 314. When there is a block of quartz sand stuck in the hole, the cone block 314 uses its sharp tip to collide with the block of quartz sand, generating enough impact force to push the block of quartz sand out.

[0065] like Figure 3 and Figure 8 As shown, in this embodiment, a pusher block 310 is fixedly connected to one side of the fixing rod 39, and a top plate 315 is fixedly connected to the other side of the fixing rod 39. The pusher block 310 is used to push out large pieces of unscreened quartz sand, and the top plate 315 is used to push back the large pieces of unscreened quartz sand. A bottom plate 5 is fixedly connected to one side of the machine body 1. A collection frame 51 is provided on the upper surface of the bottom plate 5. A collection cover 52 is provided in the purification chamber 35 corresponding to the position of the collection frame 51. A collection groove is opened in the screening plate 36 corresponding to the position of the collection cover 52. The pushed-back top plate 315 can push the large pieces of quartz sand raw material into the collection groove, and from the collection groove, it falls into the collection frame 51 along the collection cover 52.

[0066] Specifically, during the screening process, the pusher block 310 on one side of the fixed rod 39 can push out large pieces of unscreened quartz sand from the screening plate 36. When it is necessary to push these large pieces of quartz sand back, the top plate 315 on the other side of the fixed rod 39 plays a role in pushing the large pieces of quartz sand back to a specific position on the screening plate 36. The collection frame 51 set on the bottom plate 5 on one side of the machine body 1, together with the collection cover 52 on the purification chamber 35 and the collection groove on the screening plate 36, forms a complete collection channel. The large pieces of quartz sand pushed back by the top plate 315 can smoothly enter the collection groove and fall into the collection frame 51 along the collection cover 52, realizing the effective collection of quartz sand raw materials.

[0067] The process for preparing ultra-high purity quartz sand through fine crushing and multi-stage purification includes the following methods:

[0068] Step 1: Perform preliminary cleaning on the ultra-high purity quartz sand raw material to be screened, removing large pieces of debris and tangled materials;

[0069] Step 2: The prepared recycled material is evenly fed into the feed inlet (34) of the purification chamber (35), and after being initially crushed by the crushing roller (31), it falls onto the screening plate (36);

[0070] During screening, as the limiting cone (49) follows the rotation of the rotating shaft (32), the limiting cone (49) moves in an elliptical trajectory within the corresponding annular sleeve (41), causing the annular sleeve (41) to drive the screening plate (36) to move along the "elliptical trajectory". During the movement, the screening plate (36) works with the springs (38) at both ends to perform vibrating screening and sorting, thus finely screening the quartz sand raw material.

[0071] Step 3: During the sieving process, the drive rod (39) slides back and forth along the fixed groove (37) in the purification chamber (35). When the rod (39) slides, it uses the sharp shape of the cone (314) to fit with the outlet of the sieve plate (36) to achieve secondary compression and crushing of the blockage, and completes the unblocking of the outlet of the sieve plate (36).

[0072] Working principle: First, the equipment receives the quartz sand raw material to be crushed and purified through the fixed frame 33 on the machine body 1. The quartz sand raw material falls into the feed inlet 34. At this time, the first motor 3 drives the crushing roller 31 to rotate. The crushing roller 31 and the teeth on the auxiliary plate 317 are interlocked to achieve the initial crushing of the quartz sand raw material. The crushed quartz sand raw material falls onto the screening plate 36. The first motor 3 not only drives the crushing roller 31, but also drives the hook assembly to drive the rotating shaft 32 to rotate through the transmission mechanism. When the rotating shaft 32 rotates, it drives the limiting frame 46 to slide along the first groove 42. The limiting cone 49 in the limiting frame 46 slides synchronously in the second groove 43 until the limiting frame 46 slides to the predetermined position. At this time, the electric rod 4... 4. Start and retract, pulling the limit frame 46 and screen plate downward and generating a forward pulling force. When the electric rod 44 is fully retracted, the limit cone 49 disengages from the second groove 43. Under the restoring force of the spring 38, the screening plate 36 quickly returns to its original position upward and backward, generating a strong vibrating screen action. Since the elastic effect of the spring 38 will not stop immediately, the screening plate 36 will continuously hook and reset, realizing continuous vibrating screen. Through the coordinated action of the rotating shaft 32, the limit frame 46, the limit cone 49 and the electric rod 44, the automatic vibrating screen function of the screening plate 36 is realized. No additional power source is required, reducing energy consumption. The continuous reset and vibrating screen action of the spring 38 effectively improves the screening efficiency, making the screening process more efficient and stable.

[0073] Meanwhile, the unblocking component slidably installed in the purification chamber 35 works in conjunction with the vibration of the screening plate 36. Specifically, the fixed rod 39 in the fixed groove 37 can slide along the groove. The cone 314 elastically installed on its lower surface contacts and acts on the screening plate 36 as the fixed rod 39 slides. The sharp shape of the cone 314 is used to clear the blockage on the screening plate 36. Through the sliding and elastic action of the cone 314, the unblocking of the screening plate 36 is effectively achieved, improving the screening efficiency. The sharp shape of the cone 314 can easily penetrate the blockage, reducing the resistance in the screening process. At the same time, the sliding design of the fixed rod 39 allows the cone 314 to flexibly act at different positions of the screening plate 36, ensuring the comprehensiveness and efficiency of unblocking.

[0074] It effectively prevents screen hole clogging and ensures screening efficiency. In addition, the toothed engagement of the crushing roller 31 and the auxiliary plate 317 achieves the initial crushing of the quartz sand raw material, which facilitates subsequent screening. The ingenious combination of the screening plate 36 with the hook assembly and the unclogging assembly not only improves screening efficiency but also ensures screening precision. The elastic reset vibration design of the screening plate 36 effectively avoids the problem of screen hole clogging and extends the service life of the equipment.

[0075] Finally, during the screening process, the pusher block 310 on one side of the fixed rod 39 can push out large pieces of quartz sand that have not been screened on the screening plate 36. When it is necessary to push these large pieces of quartz sand back, the top plate 315 on the other side of the fixed rod 39 plays a role in pushing the large pieces of quartz sand back to a specific position on the screening plate 36. The collection frame 51 set on the bottom plate 5 on one side of the machine body 1, together with the collection cover 52 on the purification chamber 35 and the collection groove on the screening plate 36, forms a complete collection channel. The large pieces of quartz sand raw material pushed back by the top plate 315 can smoothly enter the collection groove and fall into the collection frame 51 along the collection cover 52, realizing the effective collection of quartz sand raw material.

[0076] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand, characterized in that, Includes the following steps: Step 1: Perform preliminary cleaning on the ultra-high purity quartz sand raw material to be screened, removing large pieces of debris and tangled materials; Step 2: The pre-cleaned quartz sand raw material is evenly fed into the feed inlet (34) of the purification chamber (35), and after being pre-crushed by the crushing roller (31), it falls onto the screening plate (36). During screening, the limiting cone (49) follows the rotation of the rotating shaft (32), causing the annular sleeve (41) to drive the screening plate (36) to move along an "elliptical trajectory". During the movement, the screening plate (36) cooperates with the springs (38) at both ends to perform vibrating screening and sorting, and to finely screen the quartz sand raw material. Among them, the inner wall of the annular sleeve (41) is provided with an elliptical first groove (42), and the inner walls of the first groove (42) are provided with second grooves (43) on both sides. An electric rod (44) is fixedly connected to the circumferential surface of the rotating shaft (32). A limit rod (45) is fixedly connected to the output end of the electric rod (44). A limit frame (46) is fixedly connected to the top end of the limit rod (45). A limit cone (49) is elastically provided inside the limit frame (46). When the limiting rod (45) enters the first groove (42) of the annular sleeve (41), the limiting cone (49) slides along the second groove (43); An auxiliary block (4) is fixed to the lower surface of the screening plate (36), and an annular sleeve (41) is fixed to the lower surface of the auxiliary block (4). Several springs (38) are fixed to both ends of the screening plate (36). The springs (38) are used to limit the cone (49) to retract and automatically reset the screening plate (36) when there is no longer any pulling force on the screening plate (36). The springs (38) can swing continuously, so that the screening plate (36) can swing in a certain arc. Step 3: During the screening process, the drive rod (39) slides back and forth along the fixed groove (37) in the purification chamber (35). When the rod (39) slides, it uses the sharp shape of the cone (314) to fit with the outlet of the screening plate (36) to achieve secondary compression and crushing of the blockage, and completes the unblocking of the outlet of the screening plate (36).

2. The fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand according to claim 1, characterized in that: The rotating shaft (32) rotates and drives the limiting frame (46) to rotate. The limiting frame (46) can slide along the first groove (42). During the sliding of the limiting frame (46) along the first groove (42), the limiting cone (49) can slide along the second groove (43). The extension and retraction of the electric rod (44) can adjust the vibration intensity of the screening plate (36).

3. The fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand according to claim 1, characterized in that: The limiting frame (46) has limiting grooves (47) on both sides. A limiting spring (48) is fixed in the limiting groove (47). A limiting cone (49) is fixed in the limiting spring (48). The limiting cone (49) can slide along the second groove (43). The limiting cone (49) can pull the annular sleeve (41) during the downward movement of the electric rod (44).

4. The fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand according to claim 1, characterized in that: The fixed rod (39) moves back and forth in the fixed groove (37) on the inner wall of the purification chamber (35). During the reciprocating movement, the elastic cone (314) on the lower surface of the fixed rod (39) clears the blockage of the outlet of the sieve plate (36).

5. The fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand according to claim 4, characterized in that: As the fixed rod (39) slides, the cone (314) contacts and acts on the screening plate (36), and the sharp shape of the cone (314) and the fit with the outlet of the screening plate (36) are used to achieve secondary extrusion and crushing of the blockage.

6. The fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand according to claim 4, characterized in that: A connecting groove (312) is provided in the connecting frame (311) on the lower surface of the fixed rod (39). The cone block (314) is connected to the top wall of the connecting groove (312) through the compression spring (313), so that the cone block (314) has a buffer force in the vertical direction during operation.

7. The fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand according to claim 6, characterized in that: During the resetting process, the outlet of the sieve plate (36) will collide with the cone block (314), and the quartz sand stuck in the outlet of the sieve plate (36) will collide with the cone block (314). The cone block (314) can push out the quartz sand stuck in the outlet.

8. The fine crushing and multi-stage purification process for preparing ultra-high purity quartz sand according to claim 7, characterized in that: The push block (310) on one side of the fixed rod (39) is used to push out large pieces of unscreened quartz sand, and the top plate (315) on the other side of the fixed rod (39) is used to push back the large pieces of unscreened quartz sand. A collection frame (51) is provided on the upper surface of the bottom plate (5), and a collection cover (52) is provided on the purification chamber (35) at the position corresponding to the collection frame (51). A collection groove is provided on the screening plate (36) at the position corresponding to the collection cover (52). The pushed-back top plate (315) can push the large pieces of quartz sand raw material into the collection groove, and then fall into the collection frame (51) along the collection cover (52).

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