Material screening mechanism for nano tungstic acid vibration rubbing and screening equipment
By introducing a circulating shearing structure and a Z-shaped screen plate design into the vibrating screen equipment, combined with a stepless speed motor and shearing parts with various spring stiffnesses, the problem of agglomerated tungstic acid particles not being effectively crushed is solved, efficient screening and raw material recovery are achieved, and costs are reduced.
Patent Information
- Application Number
- CN202422276897.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-09-18
AI Technical Summary
During the vibrating screening process, agglomerated tungstic acid particles tend to adhere to or stick to the sieving plate and cannot be effectively crushed, resulting in waste of raw materials and increased costs.
It adopts a circulating shearing structure and a Z-shaped squeegee design, combined with an infinitely variable speed motor and shearing parts with various spring stiffnesses to achieve variable speed shearing and stable operation. Combined with the material separation and dredging structure, it ensures that the agglomerated materials are effectively sheared and dispersed.
It improves the screening efficiency of materials, reduces the waste of raw materials, reduces production costs, and reduces dust dispersion through the cover and recovery system, thereby improving the utilization rate of raw materials.
Smart Images
Figure CN223393802U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to nano-tungstic acid processing auxiliary equipment, in particular to a material screening mechanism for nano-tungstic acid vibration scrubbing and screening equipment. Background Art
[0002] Tungstic acid, mostly in the form of yellow powder or crystals, has the general formula mWO3·nH2O. It is a polymer compound formed by combining tungsten trioxide WO3 with water in different ratios and forms. It can exist in various states. Wet tungstic acid is dried, cooled, sieved with a vibrating screen, and then iron is removed to obtain nano-scale tungstic acid.
[0003] During the screening process of the vibrating screen scraper, the clumped tungstic acid falling on the screen will be rubbed by the scraping plate. At the same time, the scraping plate continuously scrapes off the powder on the inner wall of the discharge hopper, and the scraping plate will also break up the clumped materials on the screen, so that the tungstic acid powder that meets the requirements can fall into the discharge end through the vibrating screen. However, during the entire screening process, some particles are likely to stick to or adhere to the scraping plate and move with the rotation of the scraping plate. They are not easily crushed by the scraping plate, but are easily left on the upper part of the screen. Due to the weight problem, they cannot be extracted and will be directly removed with the impurities, resulting in a waste of raw materials and invisibly increasing costs. Utility Model Content
[0004] The utility model provides a material screening mechanism for nano-tungstic acid vibration scrubbing and screening equipment, which can continuously re-introduce particles on the screen into the gaps between the scrubbing plates for extrusion and crushing, and can effectively solve the above problems.
[0005] The utility model is achieved in this way:
[0006] A material screening mechanism for a nano-tungstic acid vibrating scrubbing device comprises a frame, a lower hopper is provided on the inner side of the frame, a vibration motor is provided on the outer side of the lower hopper, a screen is provided on the inner side of the lower hopper, a scrubbing structure is provided on the top of the screen, the scrubbing structure comprises a rotating motor fixed to the top of the frame, and a scrubbing plate driven by the rotating shaft of the rotating motor, and further comprises:
[0007] A circulating shearing structure, in which the interval area between one wiping screen plate and the other wiping screen plate is the shearing zone, the circulating shearing structure is located in the shearing zone, the rotating motor is a stepless speed motor, the circulating shearing structure includes a shearing piece arranged on the side of one of the wiping screen plates, and a matching seat is arranged on the side of the other wiping screen plate. The shearing piece is initially located at the center line position of the shearing zone. As the rotation speed of the rotating shaft increases, the curvature of the shearing piece becomes longer until it is clamped in the matching seat. As the rotation speed of the rotating shaft decreases, the curvature of the shearing piece becomes shorter, and the agglomerated material falling on the upper end of the shearing piece is sheared and then rubbed by the wiping screen plate.
[0008] As a further improvement, the screen scraping plate is a Z-shaped structure, and the screen scraping plate includes a lower scraping part that contacts the screen, and the upper part of the lower scraping part is connected to a side scraping part. A top limit part is provided on the top of the side scraping part, and the shearing piece of the adjacent circulating shearing structure is provided on one side of the side scraping part, and the matching seat of the adjacent circulating shearing structure is provided on the other side of the side scraping part.
[0009] As a further improvement, the shearing member comprises a plurality of shearing plates located in the shearing area, the shearing plates close to the wiping screen plates are connected via an initial spring, and adjacent wiping screen plates are connected via shearing springs.
[0010] As a further improvement, the stiffness of the initial spring and the shear spring gradually decreases in the direction away from the rotating shaft.
[0011] As a further improvement, a plurality of latches are provided on the outer side surface of the shear plate farthest from the initial spring, and the latches engage with the mating seat as the rotation speed of the rotating shaft increases.
[0012] As a further improvement, a cover is provided on the frame, the cover is connected to an external recovery pipe, and the external recovery pipe is connected to an external suction device.
[0013] As a further improvement, a circular mounting plate is provided at the bottom of the rotating shaft, and the top surface of the top limiting portion is locked below the circular mounting plate.
[0014] The beneficial effects of the utility model are:
[0015] In the existing scrubbing and screening equipment, only the scrubbing plate is often used to scrape the inner wall of the funnel and the upper surface of the screen, and the clumped materials are broken up by the hinge force during rotation. However, this method easily causes some of the clumped materials to be close to the scrubbing plate, which not only cannot be cut into pieces during the entire vibration process, but also can avoid the vibration of the vibration motor. Therefore, the utility model adds a circulating shearing structure. First, the rotating motor is set to a stepless speed regulation motor, so that it can always scrub and screen in a variable speed manner. During the entire speed change process, the shearing piece continuously expands and contracts and deforms, so that the falling clumped particles can be sheared into a more broken shape. Once the entire rotating motor reaches the highest speed, the shearing piece will cooperate with the mating seat for stability, thereby forming a stable structure. However, as the speed change proceeds, the shearing piece will quickly retreat, thereby achieving the effect of disordered shearing in the speed change process and stable operation in the high-speed process.
[0016] In the existing sifting plate structure, most of them adopt a scraper or a rocker arm structure, as long as it can play a certain sifting role, but such a sifting structure is not conducive to the installation of a fixed cycle shearing structure. Therefore, in this case, in order to adapt to the installation of the cycle shearing structure, the sifting plate is set to a Z-shaped structure, so that the bottom scraping part plays the effect of scraping the original bottom screen, and the side scraping part that plays a side push role can be used as an installation carrier for adjacent shearing parts. The top limit part extending from the top can limit the height of the scraped powder to avoid excessive overflow, so that when the shearing structure is installed, it can also have the effects of bottom scraping and top limiting.
[0017] The shearing piece always remains in a reciprocating swinging state when in use, so it needs to be continuously deformed. The shearing piece in the utility model is composed of a variety of springs and shear plates. It is not only the shear plates that play a shearing role, but the springs themselves can also play a certain shearing role, thereby ensuring that the agglomerated material is basically in a powder state that meets the requirements when it comes into contact with the screen.
[0018] In order to make the deformation of the outer side of the shear plate different from that of the inner side, the stiffness of the spring used in the present invention is different. The stiffness of the spring gradually decreases from the direction away from the rotating shaft, so that the deformation of the shear plate at the far end of the rotating shaft can be closer to that at the near end, and its shear surface can also be larger, which is sufficient to ensure the shearing effect when shearing the material. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 It is a three-dimensional structural diagram of the utility model.
[0021] Figure 2 It is a schematic diagram of the top structure of the utility model.
[0022] Figure 3 This utility model Figure 2 Cross-section view at AA in the middle.
[0023] Figure 4 It is a structural diagram of the coordination of the scouring and screening structure, the circulating shearing structure, and the material dividing and dredging structure of the utility model.
[0024] Figure 5 It is a structural schematic diagram of the shearing piece and the wiping screen plate of the utility model.
[0025] Figure 6 This utility model Figure 5 Schematic diagram of the planar structure.
[0026] Figure 7 It is a structural schematic diagram of the material dividing and dredging structure of the utility model. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0028] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically specified.
[0029] Reference Figures 1 to 7 As shown, a material screening mechanism for a nano-tungstic acid vibration scrubbing device comprises a frame 10, a lower hopper 20 is provided on the inner side of the frame 10, a vibration motor 30 is provided on the outer side of the lower hopper 20, a screen 40 is provided on the inner side of the lower hopper 20, a scrubbing structure 50 is provided on the top of the screen 40, the scrubbing structure 50 comprises a rotating motor 51 fixed to the top of the frame 10, and a scrubbing plate 53 driven by a rotating shaft 52 of the rotating motor 51, and further comprises: a circulating shearing structure 60, wherein the interval area between one scrubbing plate 53 and the other scrubbing plate 53 is a shearing area, the circulating shearing structure 60 is located in the shearing area, the rotating motor 51 is a stepless speed motor, the circulating shearing structure 60 comprises a shearing piece 61 arranged on the side of one scrubbing plate 53, and a matching seat 62 is provided on the side of the other scrubbing plate 53, the shearing piece 61 is arranged on the side of one of the scrubbing plates 53, and the other scrubbing plate 53 is provided with a matching seat 62. 1 is initially located at the midline position of the shearing zone. As the rotation speed of the rotating shaft 52 increases, the curvature of the shearing piece 61 becomes longer until it is clamped in the matching seat 62. As the rotation speed of the rotating shaft 52 decreases, the curvature of the shearing piece 61 becomes shorter, and the agglomerated material falling on the upper end of the shearing piece 61 is sheared and then rubbed by the rubbing screen plate 53; the material dividing and dredging structure 70, the rotating shaft 52 is hollow, and the material dividing and dredging structure 70 includes a mounting seat 71 arranged in the middle position of the rotating shaft 52, and the mounting seat 71 is movably connected with a plurality of movable rods 72 that pass through the rotating shaft 52. A flip plate 73 is provided on the outer side of the movable rod 72. When the agglomerated material falls on the flip plate 73, the flip plate 73 flips inward and drives the movable rod 72 to rotate along the mounting seat 71, so that the flip plate 73 can hit the agglomerated material and make the volume of the powder gradually decrease until it falls on the top of the shearing piece 61.
[0030] During the entire feeding process, the dried tungstic acid enters the feeding hopper 20 through the frame 10. The opening of the feeding hopper 20 is vibrated by the vibration motor 30, so that the powder that meets the requirements falls through the screen 40. The powder that falls is then demagnetized to obtain nano-level tungstic acid.
[0031] During the sieving process, the rotating motor 51 drives the rotating shaft 52 , thereby driving the sieving plate 53 to rotate via the rotating shaft 52 .
[0032] In the existing scrubbing and screening equipment, only the scrubbing plate 53 is often used to scrape the inner wall of the funnel and the upper surface of the screen 40, and the agglomerated materials are broken up by the hinge force during rotation. However, this method easily causes some agglomerated materials to be close to the scrubbing plate 53, which not only cannot be cut into pieces during the entire vibration process, but also can avoid the vibration of the vibration motor 30. Therefore, the utility model adds a circulating shearing structure 60. First, the rotating motor 51 is set to a stepless speed regulation motor, so that it can always scrub and screen in a variable speed manner. During the entire speed change process, the shearing piece 61 continuously expands and contracts and deforms, so that the falling agglomerated particles can be sheared into a more broken shape. Once the entire rotating motor 51 reaches the maximum speed, the shearing piece 61 will cooperate with the matching seat 62 for stability, thereby forming a stable structure. However, as the speed change proceeds, the shearing piece 61 will quickly retreat, thereby achieving the effect of disordered shearing in the speed change process and stable operation in the high-speed process.
[0033] In the existing squeegee plate 53 structure, most of them adopt a scraper or a rocker structure, as long as it can play a certain squeegee effect, but such a squeegee structure is not conducive to the installation of a fixed cycle shearing structure 60. Therefore, the squeegee plate 53 of this embodiment is a Z-shaped structure, and the squeegee plate 53 includes a lower scraping portion 531 in contact with the screen 40, and a side scraping portion 532 is connected to the upper part of the lower scraping portion 531. A top limiting portion 533 is provided on the top of the side scraping portion 532, and the shearing piece 61 of the adjacent cycle shearing structure 60 is provided on one side of the side scraping portion 532. The matching seat 62 of the adjacent circulating shearing structure 60 is arranged on the other side of the side scraping part 532. In order to adapt to the installation of the circulating shearing structure 60, the sieve plate 53 is set to a Z-shaped structure, so that the lower scraping part 531 at the bottom plays the role of scraping the original bottom screen 40, and the side scraping part 532 that plays a side pushing role can serve as an installation carrier for the adjacent shearing piece 61. The top limiting part 533 extending from the top can limit the height of the scraped powder to avoid excessive overflow, so that the shearing structure 60 can be installed while having the effects of bottom scraping and top limiting at the same time.
[0034] The shearing piece 61 always remains in a reciprocating swinging state when in use, so it needs to be continuously deformed. The shearing piece 61 of this embodiment includes a plurality of shearing plates 611 located in the shearing area. The shearing plate 611 close to the wiping screen plate 53 is connected by an initial spring 612, and the adjacent wiping screen plates 53 are connected by a shearing spring 613. The shearing piece 61 is composed of a variety of springs and shearing plates 611, specifically an initial spring 612 and a shearing spring 613. The initial spring 612 plays a connecting role, and it is not only the shearing plate 611 that plays a shearing role, but the spring itself can also play a certain shearing role, thereby ensuring that the agglomerated material is basically in a powder state that meets the requirements when it contacts the screen 40.
[0035] In order to ensure that there is a certain difference between the deformation amount of the outer side and the deformation amount of the inner side of the shear plate 611, the stiffness of the spring used in the present invention is different. The stiffness of the spring gradually decreases from the direction away from the rotating shaft 52, so that the deformation amount of the shear plate 611 at the far end of the rotating shaft 52 can be closer to that at the near end, and its shearing surface can also be larger, which is sufficient to ensure the shearing effect when shearing the material.
[0036] When the shear plate 611 reaches the highest speed of rotation, it is actually difficult to fix the position of the shear plate 611 and the spring, and it is easy to offset and deform. Therefore, in this embodiment, the outer side surface of the shear plate 611 farthest from the initial spring 612 is provided with a plurality of locking buttons 614. As the rotation speed of the rotating shaft 52 increases, the locking buttons 614 cooperate with the matching seat 62, so that the shear plate 611 can form a stable arc surface in the shearing area.
[0037] The agglomerated material falling from the feed end into the lower hopper 20 will directly contact the shearing piece 61. Before the initial rotation speed of the shearing piece 61 is increased, it is easy to get stuck on the inner side of the shearing piece 61. If the front feed contains a large amount of agglomerated material, it may directly cause the shearing piece 61 to be stuck. Even if the rotation speed is increased, its shearing effect is limited. Therefore, the present invention provides a material dividing and dredging structure 70 on the basis of the shearing piece 61, so that a material dividing barrier can be set at the upper end position of the shearing piece 61. Due to the problem of the installation position, the material dividing and dredging structure 70 cannot be powered. Therefore, the weight of the material when it falls is used as the power. When the material falls, it hits the flip plate 73, causing the flip plate 73 to flip inward and drive the movable rod 72 to rotate along the mounting seat 71, so that the material is initially dispersed into a compliant shape at this position. Even if it cannot fall in a compliant shape, its downward projection speed can be delayed, providing a certain buffer time for the acceleration of the shearing piece 61.
[0038] In order to limit the gap between the flip plates 73, the flip plates 73 are of fan-shaped structure, and the gap between adjacent flip plates 73 gradually increases along the side away from the rotating shaft 52. The flip plates 73 are fan-shaped, but considering that the flip plates 73 may achieve balance due to the uniform falling of the material and cannot be flipped, the gap between adjacent flip plates 73 gradually increases along the side away from the rotating shaft 52. Even if the falling material is evenly dispersed, it will move along the flip plates 73 and will not form a balanced state. In order to further break the balance and make the entire material discharge more disordered, the movable rod 72 can also be connected to the mounting seat 71 by a spherical hinge, so that the movable rod 72 is slightly lowered, making the gap between the flip plates 73 larger and more uncontrollable.
[0039] The cost of tungstic acid used in the entire processing process is extremely high. During the sieving or vibration process, some dust is raised. This part of the dust contains tungstic acid components. If it is directly dispersed, it is easy to cause waste of raw materials. Therefore, a cover 11 is provided on the frame 10 of this embodiment. The cover 11 is connected to an external recovery pipe 12, and the external recovery pipe 12 is connected to an external suction device. The cover 11 is provided on the outside of the lower hopper 20 and is connected to the cover 11 through the external recovery pipe 12, so that the raised dust containing tungstic acid can be sucked away and recovered separately, reducing the cost of raw materials.
[0040] It can be seen from the cross-sectional view of this case that the opening of the lower hopper 20 is relatively large, and the corresponding amount of tungstic acid that is scattered is also relatively large. In fact, the top opening of the lower hopper 20 can be set to be smaller, and a sealing disk is set on the top. At the same time, some sealing structures are set on the inner side of the cover 11. The two cooperate to reduce the opening for spillage, thereby slowing down the loss of tungstic acid, making the utilization rate of raw materials higher and the recovery amount less.
[0041] In order to ensure a more stable fit between the sieve plate 53 and the rotating shaft 52, a circular mounting plate 521 is provided at the bottom of the rotating shaft 52. The top surface of the top limit portion 533 is locked under the circular mounting plate 521 and connected by a locking method, so that the powder can enter the plug-in gap by plugging.
[0042] Another embodiment of the present invention further provides a method for producing nano-tungstic acid, which uses the material screening mechanism of the nano-tungstic acid vibrating sieving device described above, including the following steps:
[0043] S1: After drying, the wet tungstic acid is fed into the lower hopper 20. The powdered material falls directly onto the screen 40, while the agglomerated material falls onto the flip plate 73, driving the flip plate 73 to flip or roll along the flip plate 73.
[0044] S2: The material passes through the flip plate 73 and falls into the rotating shearing member 61. The shearing member 61 shears the agglomerated material and disperses it again, so that the material contacts the screen 40 in the form of powder.
[0045] S3: The powder falling on the screen 40 is rubbed and squeezed by the sieve plate 53, and at the same time is evenly spread under the polarization of the vibration motor 30, and falls through the screen 40 into the collecting trough at the bottom of the lower hopper 20;
[0046] S4: During the action of the material dividing and dredging structure 70 , the circulating shearing structure 60 and the wiping screen plate 53 , some of the raised powder will be recovered and reused through the external recovery pipe 12 under the constraint of the cover 11 .
[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A material screening mechanism for nano-tungstic acid vibrating sieving equipment, characterized in that: The invention comprises a frame (10), a lower hopper (20) is provided on the inner side of the frame (10), a vibration motor (30) is provided on the outer side of the lower hopper (20), a screen (40) is provided on the inner side of the lower hopper (20), a scrubbing screen structure (50) is provided on the top of the screen (40), the scrubbing screen structure (50) comprises a rotating motor (51) fixed on the top of the frame (10), and a scrubbing screen plate (53) driven by a rotating shaft (52) of the rotating motor (51), and further comprises: A circulating shearing structure (60), wherein the interval area between one wiping screen plate (53) and the other wiping screen plate (53) is a shearing zone, the circulating shearing structure (60) is located in the shearing zone, the rotating motor (51) is a stepless speed motor, the circulating shearing structure (60) comprises a shearing piece (61) arranged on the side of one of the wiping screen plates (53), and a matching seat (62) is arranged on the side of the other wiping screen plate (53), the shearing piece (61) is initially located at the center line position of the shearing zone, as the rotation speed of the rotating shaft (52) increases, the curvature of the shearing piece (61) becomes longer until it is clamped in the matching seat (62), as the rotation speed of the rotating shaft (52) decreases, the curvature of the shearing piece (61) becomes shorter, and the agglomerated material falling on the upper end of the shearing piece (61) is sheared and then rubbed by the wiping screen plate (53).
2. The material screening mechanism for nano-tungstic acid vibrating sieving equipment according to claim 1, characterized in that: The sieve scraping plate (53) is a Z-shaped structure. The sieve scraping plate (53) includes a lower scraping portion (531) in contact with the screen (40). The upper portion of the lower scraping portion (531) is connected to a side scraping portion (532). A top limit portion (533) is provided on the top of the side scraping portion (532). The shearing piece (61) of the adjacent circulating shearing structure (60) is provided on one side of the side scraping portion (532), and the matching seat (62) of the adjacent circulating shearing structure (60) is provided on the other side of the side scraping portion (532).
3. The material screening mechanism for nano-tungstic acid vibrating sieving equipment according to claim 2, characterized in that: The shearing member (61) comprises a plurality of shearing plates (611) located in the shearing area. The shearing plates (611) close to the wiping screen plates (53) are connected via an initial spring (612), and adjacent wiping screen plates (53) are connected via shearing springs (613).
4. The material screening mechanism for nano-tungstic acid vibrating sieving equipment according to claim 3, characterized in that: The stiffness of the initial spring (612) and the shear spring (613) gradually decreases in a direction away from the rotating shaft (52).
5. The material screening mechanism for nano-tungstic acid vibrating sieving equipment according to claim 4, characterized in that: A plurality of latching buttons (614) are provided on the outer side surface of the shear plate (611) farthest from the initial spring (612), and the latching buttons (614) engage with the engaging seat (62) as the rotation speed of the rotating shaft (52) increases.
6. The material screening mechanism for nano-tungstic acid vibrating sieving equipment according to claim 1, characterized in that: A cover (11) is provided on the frame (10), the cover (11) is externally connected to an external recovery pipe (12), and the external recovery pipe (12) is connected to an external suction device.
7. The material screening mechanism for nano-tungstic acid vibrating sieving equipment according to claim 2, characterized in that: A circular mounting plate (521) is provided at the bottom of the rotating shaft (52), and the top surface of the top limiting portion (533) is locked below the circular mounting plate (521).