Zinc oxide powder screening treatment device

Abstract

The invention relates to the technical field of zinc oxide processing equipment, and particularly discloses a zinc oxide powder screening treatment device which comprises a screening barrel and a separator, the screening barrel comprises a screening disc connected to the top end of the screening barrel through a first spring, a rotating support is fixed in the screening barrel below the screening disc, and a vertical shaft is rotationally connected in the rotating support; a rotating column is arranged at the top end of the vertical shaft, a guiding closed-loop groove is formed in the outer circle face of the rotating column, the rotating column is sleeved with a vibration top cylinder, a second spring is connected between the top wall of the vibration top cylinder and the rotating column, and a sliding block acting with the guiding closed-loop groove is arranged on the inner wall of the vibration top cylinder; the zinc oxide powder screening treatment device is compact in structure and ingenious in design, triple actions of vibration screening, screening hole dredging and grinding can be achieved through a single driving source, winnowing of ground materials can be achieved through the negative pressure suction device, and a series of functions such as conveying and separating of the materials are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of zinc oxide processing equipment, and specifically discloses a screening and processing device for zinc oxide powder. Background Art

[0002] In the process of dry preparation of zinc oxide powder, the oxidized powder material is transported and cooled by a pipeline along with the air flow, and then collected by a bag collector. In the above process of dry preparation of zinc oxide, it is difficult to control the size of zinc oxide powder particles uniformly, and impurities inside the pipeline may also be mixed into the zinc oxide powder along with the air flow during the transportation process. Therefore, it is necessary to screen and classify it to ensure the uniformity of the product.

[0003] The existing screening and separation treatment of zinc oxide all adopt conventional vibrating screening machines on the market. For example, the utility model patent with the application number 202122543890.9 discloses a screening device for the production of zinc oxide powder, including a screening box. A filter screen is arranged inside the screening box, a vibration motor is fixed on the lower wall of the filter screen, a screw conveyor is arranged at the bottom of the screening box, a mounting plate is arranged below the screw conveyor, and a weighing plate is arranged above the right side of the mounting plate. Weighing sensors are arranged below the four corner positions of the weighing plate. Through the operation of the vibration motor, the filter screen is in a high-frequency vibration state, and the screening and classification of zinc oxide powder can be realized through the sieve plate. However, the zinc oxide powder is likely to cause blockage of the sieve hole plate. Coupled with the inclined setting of the sieve plate, some zinc oxide materials that could originally pass through the sieve holes will slide out along the sieve plate, resulting in waste of raw materials. In addition, for some agglomerated zinc oxide powder, only grinding is required for normal recovery. When this device wants to realize grinding and secondary recovery, it needs to be equipped with collection, transportation, grinding and screening devices, and corresponding power sources must be set for each part, resulting in a complex structure of the whole set of equipment and too high manufacturing and operation costs. Therefore, aiming at the above deficiencies of the existing screening device for the production of zinc oxide powder, the present application proposes a screening and processing device for zinc oxide powder that can effectively solve the above technical problems. Summary of the Invention

[0004] The present invention aims to provide a screening and processing device for zinc oxide powder to solve the deficiencies and technical problems in the actual operation process of the existing screening device for the production of zinc oxide powder.

[0005] The present invention is realized through the following technical solutions: A screening and processing device for zinc oxide powder, including a screening cylinder and a separator. A feeding device is arranged at the top of the screening cylinder, and a negative pressure suction device is connected to the top of the separator; The screening cylinder includes a screening plate connected to the top end of the screening cylinder through a first spring. A rotating bracket is fixed in the screening cylinder below the screening plate. A vertical shaft is rotatably connected in the rotating bracket. A rotating column is provided at the top end of the vertical shaft. A guiding closed-loop groove formed by sequentially connecting a rotating section and a vertical section is provided on the outer cylindrical surface of the rotating column. A vibrating top cylinder is sleeved on the rotating column. A second spring is connected between the top wall of the vibrating top cylinder and the rotating column. A slider interacting with the guiding closed-loop groove is provided on the inner wall of the vibrating top cylinder. A guiding component is provided between the vibrating top cylinder and the screening plate. The lower end of the vertical shaft is connected to a rotating hopper. The lower end of the rotating hopper is connected to a discharge pipe extending out of the screening cylinder. A grinding hopper is fixed on the inner wall of the screening cylinder. A grinding ring block interacting with the grinding hopper is provided on the outer conical surface of the rotating hopper; A suction cylinder for rotatably penetrating the discharge pipe is fixed at the lower end of the screening cylinder. A plurality of suction ports located below the grinding hopper are uniformly provided on the upper end of the outer cylindrical surface of the suction cylinder. A ring channel is provided at the lower end of the suction cylinder. A conveying pipe is connected between the ring channel and the separator.

[0006] As a further setting of the above solution, impurity discharge holes are provided at the outer edge end of the lower surface of the screening cylinder. The lower end of the rotating hopper is fixedly connected through a connecting rod to a scraping plate that fits against the bottom wall of the screening cylinder.

[0007] As a further setting of the above solution, a power component for driving the vertical shaft to rotate is provided on the screening cylinder. The power component includes a power motor fixed on the outer side surface of the screening cylinder. Transmission wheels are provided on both the power motor and the vertical shaft. A transmission member is provided between the two transmission wheels.

[0008] As a further setting of the above solution, a plurality of radial rods are uniformly provided on the outer cylindrical surface of the lower end of the vertical shaft. The outer ends of the plurality of radial rods are jointly connected to the rotating hopper.

[0009] As a further setting of the above solution, the lower end of the second spring is connected to a rotatable connection block, and the rotatable connection block is connected to the upper surface of the rotating column.

[0010] As a further setting of the above solution, the guiding component includes a convex block provided on the vibrating top cylinder, and a guiding hole is provided on the convex block. A guiding rod interacting with the guiding hole is provided on the lower surface of the screening plate.

[0011] As a further setting of the above solution, a ball head made of rubber material and interacting with the screening plate is provided at the top end of the vibrating top cylinder.

[0012] As a further setting of the above solution, a ring body is fixed to the upper end of the screening cylinder, and a plurality of the first springs are evenly connected between the ring body and the outer circumferential surface of the screening disc. The screening holes on the screening disc are arranged in a ring shape and are directly above the upper opening of the rotary hopper.

[0013] As a further setting of the above solution, the separator includes a separation cylinder. A discharge pipe with a discharge valve is arranged at the lower end of the separation cylinder. The top wall of the separation cylinder is connected with a filter bag filter element. A suction pipe connected to a negative pressure suction device is connected to the top of the separation cylinder. The conveying pipe is communicated with the side surface of the separation cylinder.

[0014] As a further setting of the above solution, a brush ring is arranged on the periphery of the filter bag filter element. The inner ring of the brush ring is provided with bristles that act on the outer surface of the filter bag filter element. A telescopic driving rod for driving the brush ring to move up and down is arranged in the separation cylinder.

[0015] During the operation of the zinc oxide powder screening and processing device disclosed in the present invention, the power assembly drives the vertical shaft to rotate in the rotating bracket, so that the rotating column rotates inside the vibrating top cylinder. Then, under the action of the guiding closed-loop groove and the slider, the vibrating top cylinder first moves downward and compresses the second spring, and then instantly releases the potential energy of the second spring to make the vibrating top cylinder quickly hit the screening disc upward, so that while the screening disc vibrates and screens the upper material, the originally blocked screening holes can be dredged.

[0016] Due to the continuous impact of the vibrating top cylinder on the center of the screening disc, the zinc oxide powder on its upper surface will move around and be correspondingly screened through the screening holes. The zinc oxide powder passing through the screening holes falls into the rotary hopper and is discharged from the screening cylinder through the discharge pipe; the un-screened zinc oxide coarse materials and impurities enter the grinding ring gap between the grinding hopper and the grinding ring block. The grinding ring block rotates with the rotary hopper, so as to grind the zinc oxide coarse materials. During the falling process after grinding, it will be affected by the negative pressure air flow at the suction port of the suction cylinder. The finely ground zinc oxide powder can be sucked into the suction cylinder and is transported to the separator through the conveying pipe for gas-solid separation, while the un-sucked coarse materials fall on the bottom wall of the screening cylinder and are finally discharged from the impurity discharge hole by the scraper.

[0017] In addition, the separator in the present invention uses a filter bag filter element for filtration and interception, and the telescopic driving rod can be regularly started to move the brush ring up and down. During the up and down movement of the brush ring, the impurities attached to the outer surface of the filter bag filter element can be cleaned by the bristles, ensuring the effective operation of the separator.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The zinc oxide powder screening and processing device disclosed in the present invention adopts a special vibration screening method, which not only realizes the effective screening of zinc oxide powder by the screening disc, but also can continuously dredge the sieve holes during the screening process, so that the screening disc can effectively perform primary screening of zinc oxide powder for a long time; after the screening is completed, the grinding structure driven by the same power source is used to grind the unscreened material, and after the grinding is completed, the ground material is separated for a second time by the negative pressure airflow, and the ground zinc oxide powder is collected by the separator. The entire device has a compact structure and ingenious design. It can realize the triple actions of vibration screening, sieve hole dredging and grinding with a single driving source, and can realize not only the air separation of the ground material with the negative pressure suction device, but also a series of functions such as material transportation and separation, effectively solving the problems existing in the zinc oxide screening and processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first angle; Figure 2 This is a schematic diagram of the three-dimensional structure from a second angle of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the interior of the screening drum from a first angle in the present invention; Figure 4 This is a schematic diagram of the second-angle three-dimensional structure of the interior of the screening drum in the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the screening disc, rotating column, vibrating top cylinder, etc. in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the vibration top cylinder and the rotating column in the present invention; Figure 7 It is a schematic diagram of the planar structure inside the separator of the present invention. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 efforts should fall within the scope of protection of this application.

[0022] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will refer to the attached Figures 1 to 7 drawings and describe the present application in detail in conjunction with the embodiments. Embodiment 1

[0023] Embodiment 1 discloses a zinc oxide powder screening and processing device. Refer to the attached Figure 1 drawings and Figure 2 drawings. The device includes a screening cylinder 1 and a separator 2. The separator 2 is fixedly connected to one side of the screening cylinder 1, and a negative pressure suction device 3 is connected to the upper end of the separator 2. A cover 4 is provided at the upper end of the screening cylinder 1, and a feeding device 5 is provided on the cover 4.

[0024] Refer to the attached Figure 3 drawings, Figure 4 drawings, Figure 5 drawings and Figure 6 drawings. An annular body 6 is fixedly installed at the upper end of the inner wall of the screening cylinder 1. A screening disc 7 is concentrically arranged in the annular body 6. The screening disc 7 is connected to the annular body 6 through a plurality of first springs 8 on the circumferential side surface. The screening disc 7 is provided with sieve holes arranged in an annular shape, and the feeding end of the feeding device 5 is arranged opposite to the center upper surface of the screening disc 7. A rotating bracket 9 is fixedly connected to the inner wall of the screening cylinder 1 below the screening disc 7. A vertical shaft 10 is rotatably connected to the center of the rotating bracket 9. A power assembly for driving the vertical shaft 10 to rotate is provided on the screening cylinder 1. Specifically, the power assembly includes a power motor 11 fixed on the outer side surface of the screening cylinder 1. Opposite transmission wheels are provided on the power motor 11 and the vertical shaft 10, and a corresponding transmission member 12 is provided between the two transmission wheels. The transmission member 12 can be any one of a synchronous belt or a transmission chain.

[0025] A plurality of radial rods 13 are uniformly arranged on the outer circumferential surface of the lower end of the vertical shaft 10. The outer ends of the plurality of radial rods 13 are jointly connected to a rotary hopper 14. The upper end of the rotary hopper 14 is provided with an opening and is vertically aligned with the annularly arranged sieve holes. The lower end of the rotary hopper 14 is connected to a discharge pipe 15 that extends through the bottom wall of the screening cylinder 1. A rotary column 16 is concentrically fixed at the top of the vertical shaft 10. A guiding closed-loop groove 160 formed by sequentially connecting a plurality of rotary segments 161 and a plurality of vertical segments 162 is provided on the outer circumferential surface of the rotary column 16. A vibrating top cylinder 17 is sleeved on the outer circumferential surface of the rotary column 16. A slider 171 that interacts with the guiding closed-loop groove 160 is provided on the inner wall of the vibrating top cylinder 17. The top wall of the vibrating top cylinder 17 is connected to a second spring 172. The lower end of the second spring 172 is connected to the upper surface of the rotary column 16 through a rotating connection block 173. In addition, a convex block 174 is provided on the outer circumferential surface of the vibrating top cylinder 17. A guiding hole is provided in the convex block 174. Then, a guiding rod 18 that interacts with the guiding hole is provided on the lower surface of the screening disc 7. Finally, a ball head 175 that interacts with the screening disc 7 is provided on the upper surface of the vibrating top cylinder 17, and the ball head 175 is preferably made of rubber material.

[0026] A grinding hopper 19 is fixed on the inner wall of the screening cylinder 1 below the rotary hopper 14. A grinding ring block 20 that interacts with the grinding hopper 19 is provided at the upper end of the outer conical surface of the rotary hopper 14, and the annular gap between the grinding ring block 20 and the grinding hopper 19 is gradually reduced from top to bottom.

[0027] A suction cylinder 21 is fixed at the center of the lower surface of the screening cylinder 1, and the discharge pipe 15 rotates through the upper and lower ends of the suction cylinder 21, so that an annular gap for sucking materials is formed between the suction cylinder 21 and the discharge pipe 15. A plurality of suction ports 211 are uniformly provided on the outer circumferential surface of the upper end of the suction cylinder 21, and the suction ports 211 are arranged at a distance of about 3 - 5 cm below the grinding hopper 19. At the same time, a communication hole communicating with the external air pressure is provided on the screening cylinder 1. The lower end of the suction cylinder 21 is connected to an annular channel 22, and a conveying pipe 23 is connected between the annular channel 22 and the separator 2. Finally, an impurity discharge hole 24 is provided at the outer edge end of the lower surface of the screening cylinder 1. A vertical downward connecting rod 25 is connected to the lower end of the rotary hopper 14, and then a scraping plate 26 that fits against the bottom wall of the screening cylinder 1 is fixedly connected to the lower end of the connecting rod 25.

[0028] During the operation of the zinc oxide powder screening and processing device disclosed in Embodiment 1, the collected zinc oxide powder is conveyed by the feeding device 5 to the center of the top end of the screening cylinder 1 and then falls on the center of the upper surface of the screening disc 7. The feeding device 5 in Embodiment 1 is specifically designed as a combination of a screw conveyor + a hopper, enabling it to quantitatively convey the zinc oxide powder.

[0029] Under the action of the power motor 11 and the transmission part 12, the vertical shaft 10 rotates in the screening cylinder 1 at the designed speed, so that the rotating column 16 rotates inside the vibrating top cylinder 17, and the rotating hopper 14 rotates inside the grinding hopper 19. During the rotation of the rotating column 16, due to the action of the guiding closed-loop groove 160 and the slider 171, the vibrating top cylinder 17 will first move downward against the action of the second spring 172 to store energy, and then instantaneously release the potential energy of the second spring 172, causing the vibrating top cylinder 17 to move upward rapidly, and the ball head 175 to hit the center of the screening plate 7. At this time, the zinc oxide powder on the upper surface of the screening plate 7 will vibrate continuously and spread around. Some zinc oxide powder falls into the rotating hopper 14 through the sieve holes and finally through the discharge pipe 15, while some zinc oxide powder that does not pass through the sieve holes falls into the grinding gap between the grinding hopper 19 and the grinding ring block 20 through the annular gap between the ring body 6 and the screening plate 7. Then, this part of the zinc oxide powder is ground by the action of the grinding ring block 20 and the grinding hopper 19 and finally falls from the lower end of the grinding hopper 19.

[0030] When the ground zinc oxide powder falls from the lower end of the grinding hopper 19, it will be subjected to the negative pressure adsorption of the suction port 211 at the upper end of the suction cylinder 21. At this time, some completely ground zinc oxide powder can be sucked into the suction cylinder 21 and then transported to the separator 2 through the conveying pipe 23 for separation. The separated zinc oxide powder can be bagged together with that discharged from the discharge pipe 15. The part that is not sucked into the suction cylinder 21 may be other impurities. At this time, it will fall on the bottom wall of the screening cylinder 1 and be scraped to the impurity discharge hole 24 by the scraper 26, and then discharged separately through the impurity discharge hole 24. Embodiment 2

[0031] Embodiment 2 discloses a zinc oxide powder screening and processing device which is further designed based on the technical solution in Embodiment 1, and the same parts as those in Embodiment 1 will not be described again.

[0032] Reference appendix Figure 1 Appendix Figure 2 And appendix Figure 7 Referring to appendix

[0033] A brush ring 205 is arranged on the periphery of the filter bag filter element 203, and bristles acting on the outer surface of the filter bag filter element 203 are arranged on the inner ring of the brush ring 205. A vertical slide bar 206 penetrating through the brush ring 205 is arranged at the top of the separation cylinder 201, and a telescopic drive rod 207 for driving the brush ring 205 to move up and down is further arranged at the top of the separation cylinder 201.

[0034] In the separator 2 of this Embodiment 2, the filter bag filtration separation method is adopted, and the pumped ground zinc oxide powder is brought into contact with the filter bag filter element 203 to realize the separation of gas and powder. The telescopic drive rod 207 can be regularly controlled to extend and retract once, so that the brush ring 205 moves up and down. During the up and down movement of the brush ring 205, the zinc oxide powder attached to the outer surface of the filter bag filter element 203 is brushed off by the bristles, ensuring the operation effect of the entire separator 2.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A zinc oxide powder screening and processing device, comprising a screening cylinder and a separator, characterized in that, A feeding device is arranged at the top end of the screening cylinder, and a negative pressure suction device is connected to the top end of the separator; The screening cylinder includes a screening plate connected to the top end of the screening cylinder through a first spring. A rotating support is fixed in the screening cylinder below the screening plate. A vertical shaft is rotatably connected in the rotating support. A rotating column is arranged at the top end of the vertical shaft. A guiding closed-loop groove formed by sequentially connecting a rotating section and a vertical section is opened on the outer cylindrical surface of the rotating column. A vibrating top cylinder is sleeved on the rotating column. A second spring is connected between the top wall of the vibrating top cylinder and the rotating column. A sliding block interacting with the guiding closed-loop groove is arranged on the inner wall of the vibrating top cylinder. A guiding component is arranged between the vibrating top cylinder and the screening plate. The lower end of the vertical shaft is connected with a rotating hopper. The lower end of the rotating hopper is connected with a discharge pipe extending out of the screening cylinder. A grinding hopper is fixed on the inner wall of the screening cylinder. A grinding ring block interacting with the grinding hopper is arranged on the outer conical surface of the rotating hopper; A suction cylinder for rotatably penetrating the discharge pipe is fixed at the lower end of the screening cylinder. A plurality of suction ports located below the grinding hopper are uniformly opened on the upper outer cylindrical surface of the suction cylinder. A ring channel is arranged at the lower end of the suction cylinder. A conveying pipe is connected between the ring channel and the separator.

2. The zinc oxide powder screening and processing device according to claim 1, wherein An impurity discharge hole is opened at the outer edge end of the lower surface of the screening cylinder. The lower end of the rotating hopper is fixedly connected with a scraper fitting the bottom wall of the screening cylinder through a connecting rod.

3. The zinc oxide powder screening and processing device according to claim 1, characterized in that, A power component for driving the vertical shaft to rotate is arranged on the screening cylinder. The power component includes a power motor fixed on the outer side surface of the screening cylinder. Transmission wheels are arranged on both the power motor and the vertical shaft. A transmission part is arranged between the two transmission wheels.

4. The zinc oxide powder screening and processing device according to claim 1, characterized in that, A plurality of radial rods are uniformly arranged on the outer cylindrical surface of the lower end of the vertical shaft. The outer ends of the plurality of radial rods are jointly connected with the rotating hopper.

5. The zinc oxide powder screening and processing device according to claim 1, characterized in that The lower end of the second spring is connected with a rotatable connecting block, and the rotatable connecting block is connected with the upper surface of the rotating column.

6. The zinc oxide powder screening and processing device according to claim 1, wherein The guiding component includes a convex block arranged on the vibrating top cylinder, and a guiding hole is opened on the convex block. A guiding rod interacting with the guiding hole is arranged on the lower surface of the screening plate.

7. The zinc oxide powder screening and processing device according to claim 6, characterized in that, A ball head made of rubber material and interacting with the screening plate is arranged at the top end of the vibrating top cylinder.

8. The zinc oxide powder screening and processing device according to claim 1, characterized in that A ring body is fixed at the upper end of the screening cylinder. A plurality of the first springs are uniformly connected between the ring body and the outer circular surface of the screening plate. The screen holes on the screening plate are arranged in a ring shape and are directly above the upper end opening of the rotating hopper.

9. The zinc oxide powder screening and processing device according to claim 1, characterized in that The separator includes a separation cylinder. A discharge pipe with a discharge valve is arranged at the lower end of the separation cylinder. A filter bag filter element is connected to the top wall of the separation cylinder. An air suction pipe connected to the negative pressure suction device is connected to the top of the separation cylinder. The conveying pipe is communicated with the side surface of the separation cylinder.

10. The zinc oxide powder screening and processing device according to claim 9, characterized in that, A brush ring is arranged around the filter bag filter element. Brush hairs interacting with the outer surface of the filter bag filter element are arranged on the inner ring of the brush ring. A telescopic driving rod for driving the brush ring to move up and down is arranged in the separation cylinder.

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