Boron carbide micro-powder feeding and screening device

Abstract

The utility model relates to the technical field of boron carbide sorting, in particular to a boron carbide micro-powder feeding and screening device which comprises a screening sleeve, the top end of the screening sleeve is fixedly connected with a fixing plate, the top end of the fixing plate is fixedly connected with a material storage sleeve, and a vibrating feeder is installed in the material storage sleeve. Two second connecting plates are fixedly connected to the circumferential inner wall of the storage sleeve, spiral stirring blades are rotationally connected into the two second connecting plates, the two-stage screening structure can primarily and further screen the boron carbide micro powder, the micro powder with different particle sizes is effectively separated, accurate grading is achieved, and the screening efficiency is improved. The stable vibration screening mechanism enables materials to fully move on the screen, the screening efficiency is improved, micro powder with different particle sizes can be discharged from corresponding discharging ports, the strict requirements of diversified production processes for the particle sizes of the micro powder are met, the product quality is improved, and the performance and reliability of products in various application fields are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to boron carbide sorting technical field, concretely relates to a boron carbide micro powder loading and screening device. BACKGROUND

[0002] Boron carbide can absorb a large number of neutrons without forming any radioactive isotope, so it is an ideal neutron absorber in nuclear power generation field, and the neutron absorber is mainly to control the rate of nuclear fission, and boron carbide is mainly made into controllable rod in nuclear reactor field, but sometimes it is made into powder to increase the surface area.

[0003] Because of the characteristics of low density, high strength, high temperature stability and good chemical stability, it is used in wear-resistant materials, ceramic reinforcing phase, especially in lightweight armor, reactor neutron absorber, etc. In addition, compared with diamond and cubic boron nitride, boron carbide is easy to manufacture and low in cost, so it is more widely used and can replace expensive diamond in some places, commonly used in grinding, polishing, drilling and other applications.

[0004] The authorized publication number "CN222174335U" records a kind of boron carbide micro powder sorting device, including sorting box supported on the ground by fixed frame, sorting box is provided with crushing assembly and auxiliary discharging assembly in interior, and concave sieve tray is fixedly installed on the inner wall of sorting box, crushing assembly includes hollow rotating cylinder, end face cam and slide bar, hollow rotating cylinder is rotatably connected to the lower surface of the top of sorting box, end face cam is fixedly installed on the lower surface of the top of sorting box, and slide bar is only vertically slidably matched in the inner wall of hollow rotating cylinder;The utility model sets up end face cam, utilizes the shape characteristics of end face cam itself, so that slide bar and grinding rod can rotate along with hollow rotating cylinder and slide up and down along the inner wall of hollow rotating cylinder, so as to continuously change the distance between grinding rod and concave sieve tray, so that on one hand, it can grind and scatter the boron carbide micro powder in lump at the same time, on the other hand, the arrangement of power source and wire harness is reduced, and the device structure is optimized.

[0005] The above-mentioned intermediate mounting seat is provided as a stepped boss matched with the stepped hole, a sealing ring is in pressure contact between the stepped boss and the stepped hole, and the inner mounting seat is provided as a tapered boss extruded with the tapered hole. The utility model has the advantages of improving the dissolution of boron trioxide and quickly removing residual carbon, but the above-mentioned patent has certain limitations in use, the single-layer screen mesh leads to low screening efficiency, cannot grade screen the boron carbide micro powder, is difficult to accurately control the particle size, and cannot meet the diversified production needs. UTILITY MODEL CONTENTS

[0006] The utility model provides a boron carbide micro powder loading and screening device, including, The utility model discloses a boron carbide micro powder loading and screening device, which can effectively solve the problems of low screening efficiency caused by single-layer screen, inability to grade screen boron carbide micro powder, difficulty in accurately controlling particle size and inability to meet diversified production requirements.

[0007] To achieve the above object, the utility model discloses the following technical scheme:

[0008] The utility model provides a boron carbide micro powder loading and screening device, including,

[0009] The screening sleeve is fixedly connected with a fixed plate at the top end, the fixed plate is fixedly connected with a storage sleeve at the top end, a vibrating feeder is installed in the storage sleeve, two second connecting plates are fixedly connected with the circumferential inner wall of the storage sleeve, and spiral stirring blades are rotatably connected in the two second connecting plates.

[0010] A second motor is fixedly connected to the bottom end of one of the second connecting plates, and the output end of the second motor is fixedly connected to the bottom end of the spiral stirring blade.

[0011] The utility model further includes a screening mechanism, which is installed inside the screening sleeve and is mainly used for screening out impurities in the boron carbide micro powder.

[0012] Further, the screening mechanism includes:

[0013] A fixed sleeve is fixedly connected to the inner walls on both sides of the screening sleeve.

[0014] Four limiting rods are slidingly connected to the inner walls on both sides of the screening sleeve.

[0015] A lower screen is arranged in the screening sleeve.

[0016] Four second springs are respectively sleeved on the outer surfaces of the four limiting rods and are fixedly connected to the end of the lower screen and the fixed sleeve.

[0017] An upper screen is fixedly connected to the top end of the lower screen, and the pore sizes of the upper screen and the lower screen gradually decrease.

[0018] A cam is rotatably connected to the inner walls on both sides of the screening sleeve.

[0019] Two discharge ports are respectively arranged at the two ends of the screening sleeve.

[0020] A cam cover is fixedly connected to the bottom end of the lower screen, and the cam is slidingly connected to the outer surface of the cam cover.

[0021] A servo motor is fixedly connected to the front end of the screening sleeve, and the output end of the servo motor is fixedly connected to the front end of the cam;

[0022] Two limiting holes are arranged on the inner walls of the two sides of the screening sleeve;

[0023] A collection screen is arranged on the lower side of the screening sleeve;

[0024] A dust suction assembly is arranged inside the two limiting holes, which mainly functions to suck fine dust.

[0025] Further, the dust suction assembly comprises:

[0026] Two fan covers are fixedly connected to the front and rear ends of the screening sleeve;

[0027] Two fixed covers are fixedly connected to the inner walls of the circumferences of the two fan covers;

[0028] Two filter screens are fixedly connected to the inner walls of the circumferences of the fan covers, and the two filter screens are sleeved on the circumferential surfaces of the second rotating rods;

[0029] Four dust suction fan blades are fixedly connected to the inner walls of the circumferences of the second rotating rods;

[0030] Two transmission gears are fixedly connected to the circumferential surfaces of the second rotating rod and the cam;

[0031] A toothed belt is in transmission engagement with the circumferential surfaces of the two transmission gears;

[0032] An elastic support component is arranged on the lower side of the collection screen, which mainly functions to provide elastic support for the collection screen.

[0033] Further, the elastic support component comprises:

[0034] Four n-type plates are arranged at the four corners of the lower side of the collection screen, and the bottom ends of the four n-type plates are fixedly connected with support seats;

[0035] Two first connecting plates are fixedly connected to the four edges of the two ends of the collection screen and vertically aligned with the four n-type plates;

[0036] Damping rods are provided with four, four first connecting plates and four n-type plates are fixedly connected to the four damping rods, and the four damping rods are fixedly connected to the bottom end of the four first connecting plates;

[0037] First springs are provided with four, four n-type plates and four first connecting plates are fixedly connected to the four first springs, and the four first springs are respectively sleeved on the outer surfaces of the four damping rods.

[0038] Further, the screening sleeve is fixedly connected with guide sleeves at both ends, and two collecting sleeves are movably connected in the two guide sleeves.

[0039] Further, the support seat is fixedly connected with an intelligent controller at one side end, the screening sleeve is fixedly connected with a smoke sensor at the rear end, and clamping strips are movably connected in the two fan covers.

[0040] Further, the collecting screen is fixedly connected with a vibration motor at one side end, a protective cover is fixedly connected to the bottom end of one second connecting plate, a first bevel gear and a second bevel gear are arranged in the protective cover, the second bevel gear is fixedly connected to the bottom end of the spiral stirring blade, a first rotating rod is rotatably connected to one side inner wall, the other end of the first rotating rod is rotatably connected to the protective cover, the first bevel gear is fixedly connected to the circumferential surface of the first rotating rod, the second bevel gear is engaged with the first bevel gear, the output end of the second motor is fixedly connected to one end of the first rotating rod, and a mesh screen is fixedly connected to the discharge port of the vibrating feeder.

[0041] Further, the rear end of the screening sleeve is fixedly connected with a rack cover, and the rack cover is sleeved on the circumferential surface of the toothed belt.

[0042] Beneficial effects

[0043] Compared with the prior art, the technical scheme provided by the utility model has the beneficial effects that:

[0044] First, the upper screen and the lower screen are provided, the aperture changes from large to small, a two-stage screening structure is formed, at the same time, the cam cover is driven to make the lower screen vibrate up and down by driving the cam to rotate through the servo motor, and the stable vibration of the screen is guaranteed by cooperating with the limiting rod and the second spring;

[0045] The two-stage screening structure can preliminarily and further screen the boron carbide powder, effectively separates the powder of different particle sizes, realizes accurate grading, the stable vibrating screening mechanism enables the material to fully move on the screen, improves the screening efficiency, the powder of different particle sizes can be discharged from the corresponding discharge port, meets the strict requirements of diversified production processes on the particle size of the powder, improves the product quality, and enhances the performance and reliability of the product in various application fields.

[0046] II. The device is equipped with a dust suction assembly including a fan cover, a fixed cover, a filter screen, dust suction fan blades, a transmission gear, a toothed belt and other components. During the screening process, the cam drives the transmission gear to rotate, and the second rotating rod is rotated through the toothed belt, thereby driving the dust suction fan blades to rotate to generate suction force. The dust generated during the screening process is sucked into the fan cover and filtered through the filter screen. The dust suction assembly can effectively suck the fine dust generated during the screening process in a timely manner, filter the dust-containing air, and discharge clean air, which greatly reduces the diffusion of dust in the working environment. This not only improves the air quality of the production workshop and reduces the environmental pollution caused by dust, but also effectively protects the health of the operators and reduces the risk of diseases caused by inhaling dust, thereby providing a strong guarantee for safe production.

[0047] III. The spiral stirring blade transmits the boron carbide powder in the storage sleeve, effectively improves the flowability of the powder, prevents the powder from accumulating during the storage stage, enables the vibrating feeder to uniformly and stably deliver the material to the screening sleeve, provides stable material flow for screening, improves the screening efficiency and precision, and when the material accumulated on the collection screen is too much, the vibrating motor is started to drive the collection screen to vibrate, so that the material smoothly passes through the guide sleeve and enters the collection sleeve, avoids the accumulation of the material during the collection stage, ensures the smoothness of the collection process, improves the overall production efficiency, and reduces manual intervention and material waste. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0049] Figure 1 It is a perspective view of the present application;

[0050] Figure 2 It is a first perspective side view of the present application;

[0051] Figure 3 It is a first perspective sectional view of the present application;

[0052] Figure 4The utility model discloses a local enlarged view of A in the utility model Figure 3 .

[0053] Figure 5 The utility model discloses a local enlarged view of C in the utility model Figure 3 .

[0054] Figure 6 The utility model discloses a second perspective view of the utility model.

[0055] Figure 7 The utility model discloses a local enlarged view of B in the utility model Figure 6 .

[0056] Figure 8 The utility model discloses a third perspective view of the utility model.

[0057] Fig. 1, screening sleeve;2, support seat;3, fixed plate;4, storage sleeve;5, vibrating feeder;6, filter screen;7, rack cover;8, smoke inductor;9, collection screen;10, n type board;11, first spring;12, damping rod;13, first connecting plate;14, fan cover;15, collection sleeve;16, guide sleeve;17, intelligent controller;18, vibration motor;19, servo motor;20, upper screen;21, clamping strip;22, helical stirring vane;23, protective cover;24, second motor;25, second connecting plate;26, lower screen;27, cam;28, cam cover;29, fixed cover;30, dust collection fan blade;31, second rotating rod;32, toothed belt;33, transmission gear;34, second spring;35, limiting rod;36, fixed sleeve;37, limiting hole;38, discharge port;39, first bevel gear;40, second bevel gear;41, first rotating rod;42, screen. DETAILED DESCRIPTION

[0058] Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model.

[0059] The utility model will be further described in connection with the embodiments.

[0060] Refer to the attached Figures 1-8The utility model provides a boron carbide micro powder loading screening device, including, screening sleeve 1 is fixedly connected with fixed plate 3 at the top of screening sleeve 1, and the top of fixed plate 3 is fixedly connected with storage sleeve 4, and vibration feeder 5 is installed in storage sleeve 4, and two second connecting plates 25 are fixedly connected with the circumferential inner wall of storage sleeve 4, and the second connecting plate 25 is rotatably connected with spiral stirring vane 22,

[0061] Second motor 24 is fixedly connected to the bottom of one of second connecting plate 25, and the output end of second motor 24 is fixedly connected to the bottom of spiral stirring vane 22,

[0062] And still including screening mechanism, screening mechanism is installed inside screening sleeve 1, is mainly used for screening out the impurity in boron carbide micro powder.

[0063] In the embodiment: screening sleeve 1 provides installation space and support base for the internal screening mechanism and other related parts, and is the key main body structure for realizing the screening function of boron carbide micro powder.

[0064] Fixed plate 3 connects screening sleeve 1 and storage sleeve 4, plays the role of firm support and positioning, guarantees that storage sleeve 4 can be accurately installed above screening sleeve 1, makes the two links of loading and screening rationally link up in space, and ensures the stability of the whole device structure.

[0065] Storage sleeve 4 is used for storing boron carbide micro powder to be screened, and storage sleeve 4 is connected with external boron carbide micro powder conveying equipment, and the discharge port of external boron carbide micro powder conveying equipment directly transmits boron carbide micro powder into vibration feeder 5, and external boron carbide micro powder conveying equipment is prior art and not shown in the figure.

[0066] Vibration feeder 5 uniformly and stably conveys boron carbide micro powder in storage sleeve 4 to subsequent screening link, avoids the unevenness and inefficiency problem of artificial loading. Through the vibration effect, the micro powder can smoothly enter the screening process from storage sleeve 4, guarantees the continuity and uniformity of loading, and provides stable material input for screening mechanism.

[0067] Second connecting plate 25 provides rotating support structure for spiral stirring vane 22, guarantees that spiral stirring vane 22 can stably rotate in storage sleeve 4. Its installation position and structure design ensure that spiral stirring vane 22 and the inner wall of storage sleeve 4 form a reasonable stirring space, guarantee the stirring effect.

[0068] Spiral stirring vane 22 is driven by second motor 24 and stirs boron carbide micro powder in storage sleeve 4. Since the flowability of boron carbide micro powder is poor, the stirring effect of spiral stirring vane 22 can effectively prevent the accumulation of micro powder in storage sleeve 4, improve the flowability of micro powder, make it more easily be conveyed by vibration feeder 5, further guarantee the smoothness and uniformity of loading.

[0069] The screening mechanism is installed inside the screening sleeve 1, which is a core functional component for realizing the screening and particle size grading of boron carbide powder impurities. The impurities in the boron carbide powder are separated out through the internal parts, and the powder is accurately graded, so that the powder of different particle sizes is discharged from the corresponding discharge port, meeting the diversified demand of different production processes for powder particle size.

[0070] For details, please refer to Figures 1-8 The screening mechanism comprises:

[0071] The fixed sleeve 36 is fixedly connected to the inner walls of the two sides of the screening sleeve 1.

[0072] The limiting rods 35 are provided with four, and the four limiting rods 35 are all slidingly connected to the inner walls of the two sides of the screening sleeve 1.

[0073] The lower screen 26 is arranged in the screening sleeve 1.

[0074] The second springs 34 are provided with four, and the four second springs 34 are respectively sleeved on the outer surfaces of the four limiting rods 35, and are respectively fixedly connected to the ends close to each other of the lower screen 26 and the fixed sleeve 36.

[0075] The upper screen 20 is fixedly connected to the top end of the lower screen 26, and the hole diameters of the upper screen 20 and the lower screen 26 gradually decrease.

[0076] The cam 27 is rotationally connected to the inner walls of the two sides of the screening sleeve 1.

[0077] The discharge ports 38 are provided with two, and the two discharge ports 38 are respectively arranged at the two ends of the screening sleeve 1.

[0078] The cam cover 28 is fixedly connected to the bottom end of the lower screen 26, and the cam 27 is slidingly connected to the outer surface of the cam cover 28.

[0079] The servo motor 19 is fixedly connected to the front end of the screening sleeve 1, and the output end of the servo motor 19 is fixedly connected to the front end of the cam 27.

[0080] The limiting holes 37 are provided with two, and the two limiting holes 37 are respectively arranged in the inner walls of the two sides of the screening sleeve 1.

[0081] The collecting screen 9 is arranged on the lower side of the screening sleeve 1.

[0082] The dust suction assembly is installed inside the two limiting holes 37, and mainly functions to suck fine dust.

[0083] In this embodiment: the lower screen 26 is located in the screening sleeve 1, and is one of the main components of the screening material. Cooperating with the upper screen 20, the material is screened and classified according to different aperture sizes, so that the material meeting the aperture size passes through, realizing the separation of the material.

[0084] The second spring 34 has four, the second spring 34 is respectively sleeved on the outer surface of the four limiting rods 35, and is connected between the lower screen 26 and the fixed sleeve 36. The elastic effect of the spring can buffer the impact force of the lower screen 26 in the vibration process, and at the same time can make the lower screen 26 return to the initial position after vibration, assisting the screen to vibrate regularly.

[0085] The upper screen 20 is fixed at the top end of the lower screen 26 and cooperates with the lower screen 26. The aperture of the upper screen 20 and the lower screen 26 decreases from large to small, the material is first screened by the upper screen 20, the larger particles are intercepted, and the smaller particles fall to the lower screen 26 for further screening through the upper screen 20, realizing multi-stage screening of the material.

[0086] The cam 27 is rotationally connected to the inner wall of the two sides of the screening sleeve 1, and cooperates with the cam cover 28. When the cam 27 rotates, its irregular shape will push the cam cover 28, thereby driving the lower screen 26 to vibrate up and down, providing the screen with the power required for screening.

[0087] The cam cover 28 is fixed at the bottom end of the lower screen 26, and the cam 27 slides on the outer surface thereof. Its function is to convert the rotary motion of the cam 27 into the up-and-down linear motion of the lower screen 26, ensuring that the screen can vibrate and screen according to the design requirements.

[0088] The servo motor 19 is fixed at the front end of the screening sleeve 1, and its output end is connected with the cam 27. The servo motor 19 provides power for the entire screening mechanism, drives the cam 27 to rotate, and makes the screen vibrate to realize the screening of the material.

[0089] When the servo motor 19 is started, the output end of the servo motor 19 drives the cam 27 to rotate. Because the shape of the cam 27 is irregular, it will constantly push the cam cover 28 during rotation, and the cam cover 28 is fixedly connected with the lower screen 26, so the lower screen 26 will vibrate up and down with the rotation of the cam 27. At the same time, the lower screen 26 can only move linearly along the direction of the limiting rod 35 under the limitation of the limiting rod 35, ensuring the stability of the screen vibration.

[0090] The upper screen 20 is fixed at the top end of the lower screen 26 and vibrates with the lower screen 26. When the material enters the screening sleeve 1, it first falls on the upper screen 20, and larger particles are intercepted by the upper screen 20, while smaller particles fall on the lower screen 26 through the upper screen 20. The lower screen 26 has a smaller aperture than the upper screen 20, further screening the material, and the material meeting the aperture of the lower screen 26 will pass through the lower screen 26 and finally fall into the collection screen 9, while the intercepted material will be discharged through the two discharge ports 38.

[0091] During the screening process, the collision and friction of the material will generate fine dust, at which time the dust collection assembly starts to work, sucking the dust in the screening sleeve 1 away through the limiting hole 37, keeping the working environment clean. The second spring 34 plays a buffering and resetting role when the screen vibrates, allowing the screen to continuously and stably perform the screening work.

[0092] For details, please refer to Figures 1-8 , the dust collection assembly comprises:

[0093] The fan cover 14 is provided with two, and the two fan covers 14 are fixedly connected to the front and rear ends of the screening sleeve 1 respectively;

[0094] The fixed cover 29 is provided with two, and the two fixed covers 29 are fixedly connected to the inner circumferential walls of the two fan covers 14 respectively;

[0095] The filter screen 6 is provided with two, and the two filter screens 6 are fixedly connected to the inner circumferential walls of the fan covers 14, both of which are sleeved on the circumferential surface of the second rotating rod 31;

[0096] The dust collection fan blade 30 is provided with four, and the four dust collection fan blades 30 are fixedly connected to the inner circumferential walls of the second rotating rod 31;

[0097] The transmission gear 33 is provided with two, and the two transmission gears 33 are fixedly connected to the circumferential surfaces of the second rotating rod 31 and the cam 27 respectively;

[0098] The toothed belt 32 is transmissionally meshed connected to the circumferential surfaces of the two transmission gears 33;

[0099] The elastic support part is arranged on the lower side of the collection screen 9, and its main function is to provide elastic support for the collection screen 9.

[0100] In this embodiment: in the whole screening mechanism work, cam 27 is driven by servo motor 19 output shaft, will make it drive one of the transmission gear 33 rotation. Because the toothed belt 32 transmission meshing connection in the circumferential surface of two transmission gear 33, one of the transmission gear 33 rotation will drive another transmission gear 33 through the toothed belt 32, in turn make with one of the transmission gear 33 fixed connection second rotation rod 31 start rotating.

[0101] With the rotation of the second rotation rod 31, fixed in the second rotation rod 31 circumferential wall of four dust fan 30 also start rotating. The rotation of the dust fan 30 produces suction, the fine dust generated in the screening process into the fan cover 14.

[0102] The suction of dust containing air first through the filter screen 6, filter screen 6 will intercept the dust, so that clean air through, so as to achieve the purpose of filtering dust. Fan cover 14 provides a relatively closed space for the dust suction assembly, helps to guide the airflow, improves the dust suction efficiency, while the fixed cover 29 ensures the stable installation of the internal components.

[0103] In the screening process, the vibration of the screen will be transmitted to the collection screen 9, and the elastic support component arranged on the lower side of the collection screen 9 will play a buffering role, reducing the vibration impact on the collection screen 9, ensuring that the collection screen 9 can stably collect the screened materials.

[0104] For details, please refer to Figures 1-7 , the elastic support component comprises:

[0105] n type plate 10, n type plate 10 is arranged at the lower side of the collection screen 9 four corners, the bottom end of the four n type plate 10 is fixedly connected with the support seat 2;

[0106] The first connecting plate 13 is provided with two, two first connecting plate 13 is respectively fixedly connected with the two ends of the collection screen 9 four sides and four n type plate 10 vertical alignment;

[0107] Damping rod 12, damping rod 12 is provided with four, four damping rod 12 is respectively fixedly connected with four first connecting plate 13 and four n type plate 10 close to the end, wherein the four damping rod 12 telescopic end is respectively fixedly connected with the bottom end of the four first connecting plate 13;

[0108] The first spring 11 is provided with four, four first spring 11 is respectively fixedly connected with four n type plate 10 and four first connecting plate 13 close to the end, four first spring 11 is respectively set on the outer surface of four damping rod 12.

[0109] In this embodiment: when the screening mechanism is working, the vibration of the screen will be transmitted to the collection screen 9. The collection screen 9 will produce up and down displacement under the action of vibration, and the vibration is transmitted to the damping rod 12 and the first spring 11 through the first connecting plate 13.

[0110] The first spring 11 is compressed or stretched under the vibration of the collection screen 9. When the collection screen 9 moves downward, the first spring 11 is compressed and stores elastic potential energy; when the collection screen 9 moves upward, the first spring 11 releases the elastic potential energy and pushes the collection screen 9 to move upward, thereby playing a role in buffering vibration.

[0111] At the same time, the damping rod 12 plays a damping role in the vibration process of the collection screen 9. When the collection screen 9 vibrates, the telescopic end of the damping rod 12 will do telescopic movement, and the internal damping medium such as oil liquid will generate resistance and consume vibration energy, so that the vibration amplitude of the collection screen 9 gradually decreases and the vibration speed gradually slows down, and finally the vibration of the collection screen 9 is quickly stabilized.

[0112] The n-type plate 10 and the support seat 2 ensure the structural stability of the entire elastic support assembly, disperse the vibration of the collection screen 9 through the elastic support assembly to the ground, avoid the vibration from causing great impact on the surrounding environment, and also protect other parts of the screening device, thereby prolonging the service life of the device.

[0113] For details, please refer to Figures 1-7 Both ends of the screening sleeve 1 are fixedly connected with guide sleeves 16, and two collection sleeves 15 are movably connected in the two guide sleeves 16, respectively.

[0114] In this embodiment: the guide sleeves 16 fixedly connected at both ends of the screening sleeve 1 provide the collection sleeves 15 with accurate movable tracks and mounting positions. The collection sleeves 15 are movably connected in the guide sleeves 16, and after the materials pass through the upper screen 20 and the lower screen 26 in the screening sleeve 1 for screening, the materials passing through the lower screen 26 will fall to the collection screen 9, and then the materials can be collected through the collection sleeves 15 cooperating with the guide sleeves 16. The guide sleeves 16 can guide the materials to accurately fall into the collection sleeves 15, avoid the materials from spilling, and the collection sleeves 15 can be flexibly detached, which is convenient for transferring the collected materials, thereby realizing the convenience and efficiency of material collection.

[0115] For details, please refer to Figures 1-7 One side end of the support seat 2 is fixedly connected with an intelligent controller 17, the rear end of the screening sleeve 1 is fixedly connected with a smoke sensor 8, and two clamping strips 21 are movably connected in the two fan covers 14, respectively.

[0116] In this embodiment: the side end of the support seat 2 is fixedly connected with the intelligent controller 17, and the rear end of the screening sleeve 1 is fixedly connected with the smoke sensor 8 to form an intelligent monitoring and control system. In the screening process, if the dust concentration generated by the material screening is too high, or smoke is generated due to abnormal conditions, the smoke sensor 8 can detect the relevant signals in time and transmit the signals to the intelligent controller 17 to start and stop the equipment. The clamping strip 21 movably clamped in the fan cover 14 can clean the filter screen 6 inside the fan cover 14 by opening the clamping strip 21 when cleaning the dust covering the outer surface of the filter screen 6.

[0117] For details, please refer to Figures 1-7 , one side end of the collecting screen 9 is fixedly connected with the vibration motor 18, the bottom end of one of the second connecting plates 25 is fixedly connected with the protective cover 23, the protective cover 23 is provided with the first bevel gear 39 and the second bevel gear 40, the second bevel gear 40 is fixedly connected to the bottom end of the spiral stirring blade 22, the side inner wall of the screening sleeve 1 is rotatably connected with the first rotating rod 41, the other end of the first rotating rod 41 is rotatably connected in the protective cover 23, the first bevel gear 39 is fixedly connected to the circumferential surface of the first rotating rod 41, the second bevel gear 40 is engaged with the first bevel gear 39, one end of the first rotating rod 41 is fixedly connected with the output end of the second motor 24, and the discharge port of the vibrating feeder 5 is fixedly connected with the screen 42.

[0118] In this embodiment: the vibration motor 18 fixedly connected to one side end of the collecting screen 9 can be started when the material accumulates too much, and the vibration motor 18 can drive the collecting screen 9 to vibrate to convey the material. When the vibrating feeder 5 is started, the vibration of the vibrating feeder 5 can make the internal boron carbide powder pass through the screen 42 and be discharged downward. The protective cover 23 is used to protect the gear from being affected during operation.

[0119] For details, please refer to Figures 1-7 , the rear end of the screening sleeve 1 is fixedly connected with the rack cover 7, and the rack cover 7 is sleeved on the circumferential surface of the toothed belt 32.

[0120] In this embodiment: the rack cover 7 fixedly connected to the rear end of the screening sleeve 1 is sleeved on the circumferential surface of the toothed belt 32, which is used to protect the toothed belt 32 from being collided with external objects, so as to avoid damage to the toothed belt 32. At the same time, it can also prevent the operator from accidentally contacting the toothed belt 32 during equipment operation.

[0121] Working principle: when using the boron carbide powder loading and screening device, first store the boron carbide powder in the vibrating feeder 5, the vibrating feeder 5 will vibrate to make the boron carbide powder fall through the screen 42 to the upper side of the spiral stirring blade 22, and then start the second motor 24. The output end of the second motor 24 starts to rotate, driving the first rotating rod 41 fixedly connected therewith to rotate. In the rotating process of the first rotating rod 41, the first bevel gear 39 fixed on the circumferential surface thereof also rotates. Since the first bevel gear 39 is engaged with the second bevel gear 40, the rotation of the first bevel gear 39 drives the second bevel gear 40 to rotate. Since the second bevel gear 40 is fixedly connected to the bottom end of the spiral stirring blade 22, the rotation of the second bevel gear 40 directly drives the spiral stirring blade 22 to rotate in the storage sleeve 4. The rotation of the spiral stirring blade 22 stirs the boron carbide powder with poor flowability in the storage sleeve 4, so that the powder can be uniformly mixed, the accumulation is avoided, the flowability is improved, the subsequent vibrating feeder 5 is prepared for uniformly conveying the powder into the screening sleeve 1 for screening, then the servo motor 19 is started, which drives the cam 27 to rotate, the cam 27 pushes the cam cover 28 to make the lower screen 26 vibrate up and down, the lower screen 26 stably vibrates under the limitation of the limiting rod 35, and the upper screen 20 connected therewith also vibrates. After the material enters the screening sleeve 1, it is initially screened through the upper screen 20, the larger particles are intercepted, the smaller particles fall to the lower screen 26 for further screening, the material meeting the aperture of the lower screen 26 falls into the collection screen 9, and the intercepted material is discharged from the discharge port 38. In this process, the second spring 34 assists the screen to stably screen. At the same time, the dust generated in the screening process is treated by the dust suction assembly. The rotation of the cam 27 drives the transmission gear 33, the second rotating rod 31 is rotated through the toothed belt 32, and then the dust suction fan blade 30 is rotated to generate suction force, the dust is sucked into the fan cover 14 and filtered through the filter screen 6. The material falling into the collection screen 9 enters the collection sleeve 15 through the guide sleeve 16 for collection. If the material in the collection screen 9 is accumulated too much, the vibrating motor 18 can be started to assist conveying, the elastic supporting part at the lower side of the collection screen 9 reduces the vibration impact, and the collection stability is ensured. In addition, the smoke sensor 8 and the intelligent controller 17 monitor in real time, respond in time if there is an abnormality, the clamping strip 21 in the fan cover 14 facilitates cleaning of the filter screen 6, the rack cover 7 protects the toothed belt 32, and the safe and stable operation of the equipment is ensured.

[0122] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A boron carbide powder screening device, comprising, characterized by: a screening sleeve (1), a fixed plate (3) is fixedly connected to the top end of the screening sleeve (1), a storage sleeve (4) is fixedly connected to the top end of the fixed plate (3), a vibrating feeder (5) is installed in the storage sleeve (4), two second connecting plates (25) are fixedly connected to the circumferential inner wall of the storage sleeve (4), and helical stirring blades (22) are rotatably connected in the two second connecting plates (25); a second motor (24) is fixedly connected to one side end of the screening sleeve (1); and further comprising a screening mechanism installed inside the screening sleeve (1), mainly used for screening out impurities in the boron carbide powder.

2. The boron carbide micropowder feeding and screening device according to claim 1, characterized in that, The screening mechanism comprises: a fixed sleeve (36) is fixedly connected to the inner walls of the two sides of the screening sleeve (1); four limiting rods (35) are provided, and the four limiting rods (35) are all slidingly connected to the inner walls of the two sides of the screening sleeve (1); a lower screen (26) is provided in the screening sleeve (1); four second springs (34) are provided, the four second springs (34) are respectively sleeved on the outer surfaces of the four limiting rods (35), and the four second springs (34) are respectively fixedly connected to the proximal ends of the lower screen (26) and the fixed sleeve (36); an upper screen (20) is fixedly connected to the top end of the lower screen (26), and the hole diameters of the upper screen (20) and the lower screen (26) gradually decrease; a cam (27) is rotatably connected to the inner walls of the two sides of the screening sleeve (1); two discharge ports (38) are provided, and the two discharge ports (38) are respectively formed in the two ends of the screening sleeve (1); a cam cover (28) is fixedly connected to the bottom end of the lower screen (26), and the cam (27) is slidingly connected to the outer surface of the cam cover (28); a servo motor (19) is fixedly connected to the front end of the screening sleeve (1), and the output end of the servo motor (19) is fixedly connected to the front end of the cam (27); two limiting holes (37) are provided, and the two limiting holes (37) are respectively formed in the inner walls of the two sides of the screening sleeve (1); a collecting screen (9) is provided on the lower side of the screening sleeve (1); a dust suction assembly is installed inside the two limiting holes (37), and mainly functions to suck fine dust.

3. The boron carbide micropowder feeding and screening device according to claim 2, characterized in that, The dust suction assembly comprises: two fan covers (14) are provided, and the two fan covers (14) are respectively fixedly connected to the front and rear ends of the screening sleeve (1); two fixed covers (29) are provided, and the two fixed covers (29) are respectively fixedly connected to the circumferential inner walls of the two fan covers (14). Filter screen (6), two filter screen (6) are fixedly connected to the circumferential inner wall of the fan cover (14), and the two filter screen (6) are sleeved on the circumferential surface of the second rotating rod (31); Dust fan blade (30), four dust fan blades (30) are fixedly connected to the circumferential inner wall of the second rotating rod (31); Transmission gear (33), two transmission gears (33) are fixedly connected to the circumferential surface of the second rotating rod (31) and the cam (27); Toothed belt (32), the toothed belt (32) is drivingly connected to the circumferential surface of the two transmission gears (33); Elastic support component, the elastic support component is arranged on the lower side of the collection screen (9), and mainly functions is to provide elastic support for the collection screen (9).

4. The boron carbide micropowder feeding and screening device according to claim 3, characterized in that, The elastic support component comprises: N type plate (10), the n type plate (10) is arranged at the lower side of the four corners of the collection screen (9), and the bottom end of the four n type plates (10) is fixedly connected with the support seat (2); First connecting plate (13), two first connecting plates (13) are fixedly connected to the two ends of the four sides of the collection screen (9) and vertically aligned with the four n type plates (10); Damping rod (12), four damping rods (12) are fixedly connected to the four first connecting plates (13) and the four n type plates (10) on the side close to each other, wherein the telescopic end of the four damping rods (12) is fixedly connected to the bottom end of the four first connecting plates (13); First spring (11), four first springs (11) are fixedly connected to the four n type plates (10) and the four first connecting plates (13) on the side close to each other, and the four first springs (11) are sleeved on the outer surface of the four damping rods (12).

5. The boron carbide micropowder feeding and screening device according to claim 4, characterized in that, The two ends of the screening sleeve (1) are fixedly connected with guide sleeves (16), and two collection sleeves (15) are movably connected in the two guide sleeves (16).

6. The boron carbide micropowder feeding and screening device according to claim 5, characterized in that, One side end of the support seat (2) is fixedly connected with an intelligent controller (17), the rear end of the screening sleeve (1) is fixedly connected with a smoke sensor (8), and two clamping strips (21) are movably connected in the two fan covers (14).

7. The boron carbide micropowder feeding and screening device according to claim 6, characterized in that, One side end of the collecting screen (9) is fixedly connected with a vibration motor (18), a bottom end of one of the second connecting plates (25) is fixedly connected with a protective cover (23), a first bevel gear (39) and a second bevel gear (40) are arranged in the protective cover (23), the second bevel gear (40) is fixedly connected to a bottom end of a spiral stirring blade (22), a side inner wall of the (1) is rotatably connected with a first rotating rod (41), the other end of the first rotating rod (41) is rotatably connected in the protective cover (23), the first bevel gear (39) is fixedly connected to the circumferential surface of the first rotating rod (41), the second bevel gear (40) is engaged with the first bevel gear (39), the output end of the second motor (24) is fixedly connected to one end of the first rotating rod (41), the discharge port of the vibrating feeder (5) is fixedly connected with a mesh screen (42).

8. The boron carbide micropowder feeding and screening device according to claim 7, characterized in that, The rear end of the screening sleeve (1) is fixedly connected with a rack cover (7), and the rack cover (7) is sleeved on the circumferential surface of the toothed belt (32).

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