Alloy grading screening device

Abstract

The utility model provides an alloy grading screening device, which belongs to the technical field of alloy screening and comprises a screening box, and a feed inlet and an exhaust inlet are arranged at the top of the screening box. A screen plate assembly and a screen mesh assembly which are obliquely arranged are installed in the screening box. The oblique low end of the screen plate assembly is connected with a screen plate discharging table. The inclined low end of the screen assembly is connected with the screen discharging table. A material collecting cavity is formed by the screen assembly and the bottom of the screening box, and one side of the material collecting cavity is connected with a material collecting and discharging table; a material pushing mechanism is arranged in the material collecting cavity and comprises a reciprocating screw rod and a guide rod which are parallel to the bottom of the screening box, the reciprocating screw rod and the guide rod are sleeved with a push plate, and the bottom of the push plate abuts against the bottom of the screening box; a servo motor is arranged outside the side wall of the screening box, and the output end of the servo motor is connected with the reciprocating lead screw. When the device runs, materials are in a relatively sealed environment, raised dust is not easy to generate, the working environment is improved, the screening and grading effects of the materials are improved through the design of the multi-stage screen, and the waste rate of products is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy screening, in particular to an alloy grading and screening device. Background Art

[0002] Alloys are usually processed and produced using a ball-making process. After smelting to form alloy balls with a certain particle size, in order to meet the needs of lower-level production enterprises, the smelted alloy balls need to be further crushed into alloy ball products with qualified particle sizes. Taking silicon-manganese alloy as an example, silicon-manganese alloy is a desulfurizer, deoxidizer, and alloy additive for steelmaking. The particle size of the cast silicon-manganese alloy is mostly 50-200mm, while the particle size required by the steel mill is generally 10-50mm or 30-100mm. Therefore, it is necessary to crush the cast silicon-manganese alloy, and refine a small amount of slag inclusions, remove the part with too small particle size, and bag the qualified particle size products. In the production and preparation process of special alloys such as magnesium-silicon-calcium alloy, after melting and pouring to form alloy plates with a certain thickness, they also need to be crushed into alloy blocks of different specifications and particle sizes according to the use requirements, and then bagged and packaged. In the alloy crushing process, alloy blocks, alloy balls, alloy chips and powders of different sizes will inevitably be produced. Therefore, the crushed alloys need to be screened and graded. Oversized alloys need to be crushed again. Alloys of qualified sizes are used as products for the next level of bagging, while smaller alloy chips and powders also need to be separated separately for collection and reuse. At the same time, when packaging, alloy products of different particle sizes also need to be packaged separately to meet the needs of different customers.

[0003] When performing alloy screening, two methods are usually used: manual separation and mechanical separation. Manual separation has problems such as high work intensity and workload, low separation efficiency, poor working environment, and high labor costs. Therefore, enterprises usually use mechanical separation. Existing mechanical separation equipment mostly uses vibration screening. This process is prone to dust emission, which will pollute the production environment and affect the health of operators. There are also problems such as incomplete screening and poor effect of preparing multiple specifications of products by screening and grading at one time. It is easy to cause too high a scrap rate in the packaged alloy products (alloys of unqualified particle size, debris and powder are collectively referred to as scrap), affecting product quality. To a certain extent, it also causes a decrease in scrap recovery and waste of resources. Utility Model Content

[0004] The utility model provides an alloy grading and screening device, which is used to solve the problems in the prior art of easy dust generation during screening, poor working environment, poor grading effect and excessively high scrap rate in alloy products.

[0005] Specifically, the utility model provides an alloy grading and screening device, comprising: a screening box arranged horizontally, a feeding port being arranged on one side of the top of the screening box, and an air suction port being arranged on the side away from the feeding port; a screen plate assembly and a screen mesh assembly are installed obliquely in sequence from top to bottom inside the screening box, the inclined high end of the screen plate assembly is the side close to the feeding port, and a slot is provided on the side wall of the screening box connected to the inclined low end of the screen plate assembly, for connecting to a screen plate discharging platform; the inclined high end of the screen mesh assembly is the side close to the screen plate discharging platform, and a slot is provided on the side wall of the screening box connected to the inclined low end of the screen mesh assembly, for connecting to a screen mesh discharging platform; a collection is formed between the screen mesh assembly and the bottom of the screening box A material cavity, a slot is provided on one side of the aggregate cavity close to the screen plate discharge platform for connecting the aggregate discharge platform; a pushing mechanism is provided in the aggregate cavity, the pushing mechanism includes a symmetrically arranged reciprocating screw and a guide rod, the reciprocating screw and the guide rod are arranged parallel to the bottom of the screening box, and the reciprocating screw is rotatably connected to the inner wall of the screening box; a rectangular push plate is sleeved on the reciprocating screw and the guide rod, the push plate has two through holes, one of the through holes is provided with a thread matching the reciprocating screw, the bottom of the push plate abuts against the bottom of the screening box, and the side wall of the push plate abuts against the inner wall of the screening box; a servo motor is provided on the outside of the side wall of the screening box away from the aggregate discharge platform, and the output end of the servo motor is connected to the end of the reciprocating screw.

[0006] Furthermore, a vibration motor is installed at the bottom of the screening box; a plurality of support columns are arranged below the screening box, and the support columns are symmetrically arranged at the front and rear ends of the screening box, and the top of each support column is connected to the screening box through a vibration-damping spring.

[0007] Furthermore, the inclination angles of the sieve plate assembly and the screen mesh assembly are 3-30°.

[0008] Furthermore, the screen plate assembly includes an upper screen plate and a lower screen plate that fit tightly together, and the upper screen plate and the lower screen plate are provided with sieve holes with the same aperture and the same arrangement; slide grooves are symmetrically arranged on the inner wall of the screening box, and the screen plate assembly is placed in the slide grooves; the upper screen plate is fixedly connected to the slide grooves; the lower screen plate is slidably connected to the slide grooves, and a plurality of sockets are arranged on the two side walls of the lower screen plate at the inclined lower end, and a latch hoop is arranged on the outer wall of the lowest end of the slide grooves on both sides, and a pin latch is installed in the latch hoop, and the pin latch cooperates with the socket to form a positioning pin.

[0009] Furthermore, the screen assembly includes an upper screen and a lower screen that fit tightly together, and the upper screen and the lower screen are provided with mesh holes of the same aperture and arrangement, and the upper screen and the lower screen are surrounded by screen plate frames; slide grooves are symmetrically arranged on the inner side walls of the screening box, and the screen assembly is placed in the slide grooves; the screen plate frame of the upper screen is fixedly connected to the slide grooves; the screen plate frame of the lower screen is slidably connected to the slide grooves, and a plurality of sockets are arranged on the two side walls of the screen plate frame of the inclined lower end, and a latch hoop is arranged on the outer wall of the lowest end of the slide grooves on both sides, and a pin latch is installed in the latch hoop, and the pin latch cooperates with the socket to form a positioning pin.

[0010] Furthermore, inspection doors are provided above the screen plate discharging platform and the screen mesh discharging platform, and the inspection doors are hinged to the side walls of the screening box.

[0011] Furthermore, the mesh aperture of the screen assembly is smaller than the aperture of the screen holes on the screen plate assembly.

[0012] Furthermore, the bottom of the screening box is arranged horizontally or inclined.

[0013] Furthermore, the air suction port is connected to the telescopic tube, and the other end of the telescopic tube is connected to the inlet of the industrial vacuum cleaner.

[0014] The alloy grading and screening device provided by the utility model has a screening box vibrating driven by a vibrating motor, and a multi-layer screen with different installation angles is designed inside the screening box, which increases the movement dimension of the material, can perform multi-level grading and screening separation on alloy products, improves the screening effect and speed, and significantly improves the screening work efficiency and site utilization.

[0015] Negative pressure adsorption is performed on the top of the screening box to remove dust, and dust and debris are recycled, which greatly improves the production environment of workers, suppresses dust pollution, and saves resources and production costs. The device integrates air selection and vibration screening, has a simple structure and is easy to operate, improves screening efficiency and grading effect, and reduces the scrap rate of qualified materials.

[0016] The device uses a relatively sliding screen plate assembly and a screen mesh assembly to achieve the purpose of adjusting the size of the screen hole / mesh hole by simply changing the position of the positioning pin without disassembling and replacing the screen plate and the screen mesh, making production operations more convenient; the pushing action of the pushing mechanism pushes the easily retained materials to the corresponding discharge platform, facilitating the overall recovery of the materials. The device is convenient and ingenious to use, can meet the particle size requirements of different alloy production enterprises, and at the same time can meet the screening and separation production of other solid materials, and is suitable for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of an alloy grading and screening device provided in one embodiment;

[0019] Figure 2 for Figure 1 Sectional view in the AA direction;

[0020] Figure 3 A schematic structural diagram of an alloy grading and screening device provided in another embodiment;

[0021] Figure 4 An exploded schematic diagram of a screen plate assembly provided in one embodiment;

[0022] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0023] Figure 6 An exploded schematic diagram of a screen assembly provided in accordance with one embodiment.

[0024] Description of reference numerals:

[0025] 1-screening box, 2-screen plate assembly, 3-screen assembly, 4-aggregate cavity, 5-vibration motor, 6-support column, 7-vibration damping spring, 8-telescopic tube, 9-industrial vacuum cleaner, 11-feeding port, 12-air suction port, 13-inspection door, 14-slide, 15-jack, 16-latch hoop, 17-pin latch, 21-screen plate discharge platform, 22-upper screen plate, 23-lower screen plate, 31-screen discharge platform, 32-upper screen, 33-lower screen, 34-screen plate frame, 41-aggregate discharge platform, 42-reciprocating screw, 43-push plate, 44-servo motor, 45-guide rod. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the utility model.

[0027] like Figure 1The utility model provides an alloy grading and screening device, comprising: a horizontally arranged screening box 1, a feeding port 11 is arranged on one side of the top of the screening box 1, and an air suction port 12 is arranged on the side away from the feeding port 11; a screen plate assembly 2 and a screen mesh assembly 3 are successively installed obliquely from top to bottom inside the screening box 1, the inclined high end of the screen plate assembly 2 is the side close to the feeding port 11, and a slot is provided on the side wall of the screening box 1 connected to the inclined low end of the screen plate assembly 2, which is used to connect to a screen plate discharging platform 21; the inclined high end of the screen mesh assembly 3 is the side close to the screen plate discharging platform 21, and a slot is provided on the side wall of the screening box 1 connected to the inclined low end of the screen mesh assembly 3, which is used to connect to a screen mesh discharging platform 31; a collection cavity 4 is formed between the screen mesh assembly 3 and the bottom of the screening box 1, and a slot is provided on the side of the collection cavity 4 close to the screen plate discharging platform 21, which is used to connect to the collection discharging platform 41.

[0028] The screening box 1 is set to a relatively sealed structure. When feeding and screening, the alloy material enters the screening box 1 from the feed port 11, and the fugitive dust and dust are discharged through the air suction port 12, making the working environment cleaner. The screening box 1 adopts a multi-layer screen design inside, and the material falls on the screen plate assembly 2 and the screen mesh assembly 3 in turn. The screen plate assembly 2 and the screen mesh assembly 3 are set to different inclination directions, which can make the material flow during the screening process and avoid material accumulation. When the material moves along the inclined direction on the sieve plate assembly 2 and the screen assembly 3, the larger particle size material is retained above the sieve plate assembly 2, the smaller particle size alloy, debris and powder fall from the mesh holes of the screen assembly 3 to the collecting chamber 4, and the medium particle size material is concentrated above the screen assembly 3. The inclined sieve plate assembly 2 and the screen assembly 3 are conducive to improving the screening and grading degree and the screening efficiency, and also facilitate the collection and discharge of the material retained above the sieve plate assembly 2 and the screen assembly 3 to the discharge platform, which is conducive to the subsequent bagging (qualified materials) or recycling work (unqualified materials). The screening work is completed quickly, which improves the production efficiency and reduces the scrap rate in the qualified materials.

[0029] Since the materials collected in the collecting chamber 4 are usually the smallest-sized materials and powder impurities, they are easily retained inside the collecting chamber 4 when the materials are discharged, making it difficult to recover these materials, which causes inconvenience in the use of the device. Figure 1 and Figure 2A pushing mechanism is provided in the material collection chamber 4, and the pushing mechanism includes a symmetrically arranged reciprocating screw rod 42 and a guide rod 45, the reciprocating screw rod 42 and the guide rod 45 are arranged parallel to the bottom of the screening box 1, and the reciprocating screw rod 42 is rotatably connected to the inner wall of the screening box 1; a rectangular pushing plate 43 is sleeved on the reciprocating screw rod 42 and the guide rod 45, and the pushing plate 43 has two through holes, one of the through holes is provided with a thread matching the reciprocating screw rod 42, the bottom of the pushing plate 43 abuts against the bottom of the screening box 1, and the side wall of the pushing plate 43 abuts against the inner wall of the screening box 1; a servo motor 44 is provided on the outside of the side wall of the screening box 1 away from the aggregate discharge platform 41, and the output end of the servo motor 44 is connected to the end of the reciprocating screw rod 42.

[0030] The rotation of the servo motor 44 drives the reciprocating screw 42 to rotate, and the push plate 43 is driven to reciprocate in the material collection chamber 4 through the perforation with threads matching the reciprocating screw 42, and the smooth guide rod 45 symmetrically arranged with the reciprocating screw 42 guides the push plate 43 to prevent the push plate 43 from deflecting when moving. During the movement of the push plate 43, the materials away from the material collection and discharge platform 41 can be pushed to the material collection and discharge platform 41, and stored in a storage device such as a recycling box, so as to recycle and reuse these materials. It should be noted that in order to prevent the materials from being stranded on the reciprocating screw 42 and the guide rod 45 when falling and hindering the normal movement of the push plate 43, protective covers can be respectively arranged above the reciprocating screw 42 and the guide rod 45, and the protective covers can be inverted V-shaped structures or other structures to facilitate the materials to continue to slide down along both sides of the protective covers.

[0031] like Figure 3 , a vibration motor 5 is installed at the bottom of the screening box 1; a plurality of support columns 6 are arranged below the screening box 1, and the support columns 6 are symmetrically arranged at the front and rear ends of the screening box 1, and the top of each support column 6 is connected to the screening box 1 through a vibration-damping spring 7. The vibration motor 5 can provide vibration force to the screening box 1, and a transmission component is provided between the vibration motor 5 and the screening box 1. The transmission component is arranged according to conventional means in the field and will not be described in detail. The vibration motor 5 drives the screening box 1 to vibrate, thereby driving the material therein to vibrate, so that the material is dispersed, screened and discharged during the vibration, thereby accelerating the screening efficiency. The support column 6 provides a fixed support point for the vibration, and the vibration-damping spring 7 acts as a buffer.

[0032] Furthermore, the inclination angle of the sieve plate assembly 2 and the screen mesh assembly 3 is 3-30 degrees. The sieve plate assembly 2 and the screen mesh assembly 3 are inclined so that the material can not only move under the action of vibration, but also move to the lower end of the inclination under the influence of gravity. The material is affected by the forces in different directions and can be distributed more dispersedly on the sieve plate assembly 2 and the screen mesh assembly 3, making it more convenient to intercept or screen out the unqualified particle size materials mixed therein.

[0033] The existing vibrating screening device usually has a fixed screen plate / screen. When screening materials with different particle size requirements, it is necessary to dismantle the screen plate / screen with inappropriate particle size and replace it with a new screen plate / screen that meets the particle size requirements. This operation is troublesome and affects production efficiency. Figure 4 and Figure 5 The sieve plate assembly 2 includes an upper sieve plate 22 and a lower sieve plate 23 that fit tightly together. The upper sieve plate 22 and the lower sieve plate 23 are provided with sieve holes with the same aperture and the same arrangement. The inner wall of the screening box 1 is symmetrically provided with a slide groove 14, and the sieve plate assembly 2 is placed in the slide groove 14. The upper sieve plate 22 is fixedly connected to the slide groove 14; the lower sieve plate 23 is slidably connected to the slide groove 14, and a plurality of insertion holes 15 are provided on the two side walls of the inclined lower end of the lower sieve plate 23. The outer walls of the lowest ends of the slide grooves 14 on both sides are provided with latch hoops 16, and pin latches 17 are installed in the latch hoops 16. The pin latch 17 cooperates with the insertion hole 15 to form a positioning latch.

[0034] like Figure 5 and Figure 6 Furthermore, the screen assembly 3 includes an upper screen 32 and a lower screen 33 that fit closely together, and mesh holes with the same aperture and arrangement are opened on the upper screen 32 and the lower screen 33, and screen plate frames 34 are arranged around the upper screen 32 and the lower screen 33; slide grooves 14 are symmetrically arranged on the inner side wall of the screening box 1, and the screen assembly 3 is placed in the slide grooves 14; the screen plate frame 34 of the upper screen 32 is fixedly connected to the slide grooves 14; the screen plate frame 34 of the lower screen 33 is slidably connected to the slide grooves 14, and a plurality of insertion holes 15 are arranged on the two side walls of the screen plate frame 34 of the lower screen 33 at the inclined lower end, and a latch hoop 16 is arranged on the outer wall of the lowest end of the slide grooves 14 on both sides, and a pin latch 17 is installed in the latch hoop 16, and the pin latch 17 cooperates with the insertion hole 15 to form a positioning pin.

[0035] The upper sieve plate 22 and the lower sieve plate 23 of the sieve plate assembly 2, and the upper screen 32 and the lower screen 33 of the screen assembly 3 are arranged in a combined form that can slide relative to each other. Taking the sieve plate assembly 2 as an example, the lower sieve plate 23 can slide to adjust its position, and the pin latch 17 cooperates with the socket 15 to form a latch for positioning, so that the sieve holes of the upper sieve plate 22 and the lower sieve plate 23 partially overlap, thereby changing the size of the sieve holes of the sieve plate assembly 2. The screen assembly 3 can adjust and position the lower screen 33 in the same way, thereby adjusting the mesh size of the screen assembly 3. The above-mentioned arrangement enables the sieve plate assembly 2 and the screen mesh assembly 3 to cooperate with each other to provide multiple groups of different sieve holes / mesh options, and can adjust the size of the sieve holes / mesh according to the screening requirements of the material to meet the requirements of various alloy particle sizes. The above-mentioned arrangement can adjust the size of the sieve holes / mesh only by changing the position of the positioning pin, and does not require re-disassembly and replacement of the sieve plate and the screen mesh, which can improve production efficiency and reduce the labor intensity of workers. It also enables the device to meet the needs of different alloy production companies and is more universal.

[0036] Taking the production of silicon-manganese alloy as an example, the mesh holes of the upper sieve plate 22 and the lower sieve plate 23 of the grading screening device are designed to be 100 mm, and the mesh holes of the upper screen 32 and the lower screen 33 are designed to be 30 mm. When the particle size required by the steel plant is 30-100 mm, the mesh holes and the sieve holes in the screen assembly 3 and the screen plate assembly 2 are aligned, and alloy balls of qualified particle size can be obtained on the screen discharge platform 31. When the particle size required by the steel mill is 10-50mm, by adjusting the position of the jack 15 of the sieve plate assembly 2 and the screen assembly 3 that cooperate with the pin latch 17, the position of the lower sieve plate 23 and the lower screen 33 is slid, and the sieve holes of the upper sieve plate 22 and the lower sieve plate 23 partially overlap, and the mesh holes of the upper screen 32 and the lower screen 33 also partially overlap, so that the sieve hole of the sieve plate assembly 2 is adjusted to about 50mm, and the mesh hole of the screen assembly 3 is adjusted to about 10mm, so that the purpose of adjusting the size of the sieve hole / mesh is achieved without disassembling and replacing the sieve plate and the screen, making the production operation more convenient. Even if there is material blocking the overlapping part, the reverse operation according to the above steps can be performed to re-enlarge the sieve hole / mesh, and the blocked material will automatically fall off, completing the cleaning of the blocked material.

[0037] It should be noted that although the jacks 15 are provided in multiple numbers, the displacement of the lower sieve plate 23 and the lower screen mesh 33 should be controlled within the aperture range of 2-3 sieve holes / mesh holes, and after the maximum displacement, it is ensured that they do not contact the corresponding discharge platform to avoid excessive displacement of the lower sieve plate 23 and the lower screen mesh 33 and affect the discharge. The positioning pins here can also be replaced with other types of pins commonly used in the field that can play a positioning and limiting role.

[0038] like Figure 3 Further, an inspection door 13 is provided above the sieve plate discharging platform 21 and the screen mesh discharging platform 31, and the inspection door 13 is hinged to the side wall of the screening box 1. The inspection door 13 can facilitate the cleaning and inspection of the sieve plate assembly 2 and the screen mesh assembly 3.

[0039] Furthermore, the mesh aperture of the screen assembly 3 is smaller than the aperture of the sieve hole on the screen plate assembly 2. The purpose of this arrangement is to intercept materials with larger particle sizes with the screen plate assembly 2 and discharge them through the screen plate discharge platform 21, and to screen out materials with smaller particle sizes with the screen assembly 3 and drain them into the collection chamber 4, and finally the materials with particle sizes meeting the requirements are intercepted above the screen assembly 3 and discharged through the screen discharge platform 31. It should be noted that even if the aperture of the sieve hole / mesh of the screen plate assembly 2 and / or the screen assembly 3 is adjusted, this arrangement is still maintained so that qualified materials can always be collected from the screen discharge platform 31.

[0040] Furthermore, the bottom of the screening box 1 is horizontally arranged or inclined. Figure 3The bottom of the screening box 1 is inclined, which makes it easier to discharge the smaller-sized alloys, debris and dust collected at the bottom. With the pushing action of the pushing mechanism, the unqualified materials away from the aggregate discharge platform 41 are pushed toward the aggregate discharge platform 41 and stored in storage equipment such as a recycling box so that these materials can be recycled and reused.

[0041] like Figure 3 Furthermore, the air suction port 12 is connected to the telescopic tube 8, and the other end of the telescopic tube 8 is connected to the inlet of the industrial vacuum cleaner 9. The industrial vacuum cleaner 9 that can provide negative pressure adsorption is connected to the air suction port 12 to extract the dust scattered during feeding and vibration with the air, and pass it into the industrial vacuum cleaner 9 through the telescopic tube 8. The air is discharged after being filtered, and the alloy dust is retained in it. After being collected to a certain amount, it can be recycled and reused in alloy casting and other processes, which can not only prevent the alloy dust from flying into the air to pollute the environment and damage the health of the workers, but also avoid the waste of alloy resources.

[0042] Embodiment 1:

[0043] The alloy grading and screening device, when working, the alloy material enters the screening box 1 from the feed port 11, and the fugitive dust and dust produced during feeding and screening are adsorbed by negative pressure through the air suction port 12, and then discharged from the screening box 1, and passed into the industrial vacuum cleaner 9 through the telescopic tube 8, and the alloy dust is retained therein, and after being collected to a certain amount, it can be recycled and reused in alloy casting and other processes. The vibration motor 5 provides vibration force to the screening box 1, so that the screening box 1 and the screen plate assembly 2 and the screen mesh assembly 3 therein can perform vibration screening work.

[0044] The materials fall onto the sieve plate assembly 2 and the screen assembly 3 in turn. The mesh aperture of the screen assembly 3 is smaller than the aperture of the sieve holes on the sieve plate assembly 2. Since the sieve plate assembly 2 and the screen assembly 3 are in different inclination directions, the fluidity of the materials moving along the inclination direction on the sieve plate assembly 2 and the screen assembly 3 is strong, thus avoiding the accumulation of materials. Among them, the larger particle size materials are trapped above the sieve plate assembly 2 and discharged through the sieve plate discharge platform 21, the smaller particle size alloys, debris and powders fall from the mesh of the screen assembly 3 to the collection cavity 4 and are discharged through the collection discharge platform 41, and the medium particle size materials (and qualified materials with particle size that meet the requirements) are concentrated above the screen assembly 3 and discharged through the screen discharge platform 31, which facilitates the subsequent bagging (qualified materials) or recycling work (unqualified materials) and also reduces the waste rate in qualified materials. When necessary, the sieve plate assembly 2 and the screen assembly 3 are cleaned and inspected through the inspection door 13 above the sieve plate discharge platform 21 and the screen discharge platform 31.

[0045] The bottom of the screening box 1 is tilted, and the servo motor 44 drives the reciprocating screw 42 to rotate, and drives the push plate 43 to reciprocate in the aggregate chamber 4, thereby pushing the materials away from the aggregate discharge platform 41 to the aggregate discharge platform 41, so that these materials can be collected into the storage equipment for recycling and reuse.

[0046] Embodiment 2:

[0047] On the basis of Example 1, it also includes: when the sieve plate assembly 2 and the screen assembly 3 meet the particle size requirements of the alloy, the mesh holes and mesh holes in the screen assembly 3 and the sieve plate assembly 2 are aligned, and the production is carried out according to the process in Example 1, and the alloy balls with qualified particle size can be obtained on the screen discharging platform 31. When the sieve holes and mesh holes of the sieve plate assembly 2 and the screen assembly 3 are larger than the alloy particle size requirements, it is necessary to adjust the size of the sieve holes and mesh holes of the sieve plate assembly 2 and the screen assembly 3, and the specific process is as follows: by adjusting the position of the jack 15 of the sieve plate assembly 2 and the screen assembly 3 that cooperate with the pin latch 17, after sliding the position of the lower sieve plate 23 and the lower screen 33, the sieve holes of the upper sieve plate 22 and the lower sieve plate 23 are partially overlapped, and the mesh holes of the upper screen 32 and the lower screen 33 are also partially overlapped, so that the sieve holes of the sieve plate assembly 2 and the mesh holes of the screen assembly 3 become smaller, so that the purpose of adjusting the size of the sieve holes / mesh holes is achieved without disassembling and replacing the sieve plate and the screen, making the production operation more convenient. Even if there is material blocking the overlapping part, the above steps can be reversed to enlarge the sieve hole / mesh hole, and the blocked material will automatically fall out, thus completing the cleaning of the blocked material. Moreover, the positions of the lower sieve plate 23 and the lower sieve mesh 33 can be adjusted simultaneously or separately according to production requirements, with the premise of meeting production needs as the adjustment premise.

[0048] It should be noted that in the present invention, the detailed structure of some devices is not described in detail, but belongs to the prior art known to those skilled in the art, so it will not be repeated here. In addition, the parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An alloy grading and screening device, characterized in that: include: A horizontally arranged screening box, wherein a feed inlet is provided on one side of the top of the screening box, and an air suction port is provided on the side away from the feed inlet; a screen plate assembly and a screen mesh assembly are installed obliquely in sequence from top to bottom inside the screening box, the inclined high end of the screen plate assembly is the side close to the feed inlet, and a slot is provided on the side wall of the screening box to which the inclined low end of the screen plate assembly is connected, for connecting to a screen plate discharging platform; the inclined high end of the screen mesh assembly is the side close to the screen plate discharging platform, and a slot is provided on the side wall of the screening box to which the inclined low end of the screen mesh assembly is connected, for connecting to a screen mesh discharging platform; a material collection cavity is formed between the screen mesh assembly and the bottom of the screening box, and a slot is provided on the side of the material collection cavity close to the screen plate discharging platform A slot is provided for connecting the aggregate discharge platform; a pushing mechanism is provided in the aggregate cavity, and the pushing mechanism includes a symmetrically arranged reciprocating screw and a guide rod, the reciprocating screw and the guide rod are arranged parallel to the bottom of the screening box, and the reciprocating screw is rotatably connected to the inner wall of the screening box; a rectangular push plate is sleeved on the reciprocating screw and the guide rod, the push plate has two through holes, one of the through holes is provided with a thread matching the reciprocating screw, the bottom of the push plate abuts against the bottom of the screening box, and the side wall of the push plate abuts against the inner wall of the screening box; a servo motor is provided on the outside of the side wall of the screening box away from the aggregate discharge platform, and the output end of the servo motor is connected to the end of the reciprocating screw.

2. The alloy grading and screening device according to claim 1, characterized in that: A vibration motor is installed at the bottom of the screening box; a plurality of support columns are arranged below the screening box, and the support columns are symmetrically arranged at the front and rear ends of the screening box, and the top of each support column is connected to the screening box through a vibration-damping spring.

3. The alloy grading and screening device according to claim 1, characterized in that: The inclination angles of the sieve plate assembly and the screen mesh assembly are 3-30°.

4. The alloy grading and screening device according to claim 1, characterized in that: The sieve plate assembly comprises an upper sieve plate and a lower sieve plate which fit tightly together, and sieve holes with the same aperture and arrangement are provided on the upper sieve plate and the lower sieve plate; slide grooves are symmetrically arranged on the inner side walls of the screening box, and the sieve plate assembly is placed in the slide grooves; the upper sieve plate is fixedly connected to the slide grooves; the lower sieve plate is slidably connected to the slide grooves, and a plurality of insertion holes are provided on the two side walls of the lower sieve plate at the inclined lower end, and latch hoops are provided on the outer walls at the lowest ends of the slide grooves on both sides, and pin latches are installed in the latch hoops, and the pin latches cooperate with the insertion holes to form positioning latches.

5. The alloy grading and screening device according to claim 4, characterized in that: The screen assembly comprises an upper screen and a lower screen that fit tightly together, the upper screen and the lower screen being provided with mesh holes of the same aperture and arrangement, the upper screen and the lower screen being surrounded by screen plate frames; slide grooves are symmetrically arranged on the inner side walls of the screening box, and the screen assembly is placed in the slide grooves; the screen plate frame of the upper screen is fixedly connected to the slide grooves; the screen plate frame of the lower screen is slidably connected to the slide grooves, and a plurality of insertion holes are arranged on the two side walls of the screen plate frame of the lower screen at the inclined lower end, and latch hoops are arranged on the outer walls of the lowest ends of the slide grooves on both sides, and pin latches are installed in the latch hoops, and the pin latches cooperate with the insertion holes to form positioning latches.

6. The alloy grading and screening device according to claim 1, characterized in that: Inspection doors are provided above the sieve plate discharging platform and the sieve mesh discharging platform, and the inspection doors are hinged to the side walls of the screening box.

7. The alloy grading and screening device according to any one of claims 1 to 6, characterized in that: The mesh aperture of the screen assembly is smaller than the aperture of the screen holes on the screen plate assembly.

8. The alloy grading and screening device according to any one of claims 1 to 6, characterized in that: The bottom of the screening box is arranged horizontally or inclined.

9. The alloy grading and screening device according to any one of claims 1 to 6, characterized in that: The air suction port is connected to the telescopic tube, and the other end of the telescopic tube is connected to the inlet of the industrial vacuum cleaner.

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