CN112845051B

CN112845051B - Graded screening device

Info

Publication number: CN112845051B
Application number: CN202110189839.4A
Authority: CN
Inventors: 焦雨萌; 曹建军; 张剑
Original assignee: Northwest Normal University
Current assignee: Northwest Normal University
Priority date: 2021-02-18
Filing date: 2021-02-18
Publication date: 2021-12-07
Anticipated expiration: 2041-02-18
Also published as: CN112845051A

Abstract

The invention discloses a grading and screening device, which relates to the technical field of screening devices. It includes a casing, a vibration component and several screening components. The upper end of the casing is provided with a plurality of feeding ports, and each feeding port corresponds to one feeding port. Screening assembly, the screening assembly includes a multi-stage screening element and several containing elements, the containing element is located outside the shell, the multi-stage screening element is located in the shell, and the feed port is located above the multi-stage screening element, and the multi-stage screening element is located above the multi-stage screening element. The interior of the graded screening element is communicated with the feeding port. The lower end of the multi-stage screening element protrudes from the shell and is located above the containing element. The materials can be classified in the multi-stage screening element and fall into each containing element respectively. The vibrating component can drive the multi-stage screening elements to vibrate, and make the multi-stage screening elements screen the materials. The grading and screening device can improve screening efficiency and save labor.

Description

Graded screening device

Technical Field

The invention relates to the technical field of screening devices, in particular to a grading screening device.

Background

Soil analysis is qualitative and quantitative determination of soil composition and/or physical and chemical properties, is basic work for research on soil development, fertility evolution, soil resource evaluation, soil improvement and reasonable fertilization, and is also an important means for environmental quality evaluation in environmental science. For the physicochemical analysis of soil, the soil is subjected to a particle classification treatment.

The soil sample is a material condition for performing physical and chemical analysis on soil in environmental geography, the soil sample collected from a field environment can be applied to analysis operation after being processed by a plurality of programs, and the analysis, screening and filtering are main operation programs. The structure of the analysis screen is simple, and the screen can be of different meshes (or apertures) according to different particle screening requirements, so that the analysis screens with different sizes exist. When the particle size is screened, the particle size is screened by using an analysis screen with one mesh, then the particle size is screened continuously by using analysis screens with other meshes, and if the particle size is to be screened, the particle size is screened by using the analysis screens with different meshes. Sometimes, in order to facilitate operation, soil samples with mixed particle sizes are usually poured into large-aperture analysis sieves, the analysis sieves with different aperture sizes are vertically sleeved and listed to form a continuous screening structure, the soil samples with different particle sizes are screened at one time, and then the samples are stored in different containers for physicochemical analysis.

However, there are several disadvantages and problems associated with this screening method:

the dust eliminating device has the advantages that dust eliminating technology and measures are not provided, and the operating environment is polluted by dust;

the screening process is complex, and the labor intensity is increased;

the function of sorting, recovering and loading particles is not achieved, and the operation time is reduced;

the screening and sorting method is only suitable for screening and sorting of a single sample, and simultaneous operation of multiple samples cannot be achieved;

fifthly, mutual mixed package among particles is easily caused by screening and sorting on the plane, so that the screening and sorting efficiency is reduced;

sixthly, the standard degree of an operation mode is low, and a standardized operation environment cannot be established;

the positioning mode of the device is unscientific and is not beneficial to safety protection.

Disclosure of Invention

The invention aims to provide a grading screening device, which is used for solving the problems in the prior art, improving the screening efficiency and saving labor.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a grading screening device which comprises a shell, a vibration component and a plurality of screening components, wherein the upper end of the shell is provided with a plurality of feed inlets, and one feed inlet corresponds to one screen assembly, the screen assembly comprises a plurality of stages of screen elements and a plurality of containing elements, the containing element is positioned outside the shell, the multi-stage screening element is positioned in the shell, the feeding hole is positioned above the multi-stage screening element, the inner part of the multi-stage screening element is communicated with the feeding hole, the lower end of the multi-stage screening element extends out of the shell and is positioned above the containing element, materials can be classified in the multi-stage screening element, and fall into each respectively in the splendid attire component, the vibration subassembly can drive each the multistage screening component vibration to make multistage screening component sieves the material.

Preferably, the screen assembly further comprises a plurality of hoppers, one hopper is fixed at each feed inlet, the upper end of each hopper is located outside the shell, the two ends of each hopper are open, the inner diameter of each hopper is gradually reduced from top to bottom, the lower ends of the hoppers and the upper ends of the multiple stages of screen elements are fixed on the inner walls of the feed inlets, and the hoppers are communicated with the inside of the multiple stages of screen elements.

Preferably, the multistage screening element includes a cylinder and a plurality of screens, the cylinder is a cylinder with openings at two ends, a connecting line of centers of cross sections of the cylinder is a curve with a downward concave middle part, the upper end of the cylinder is fixedly connected with an inner wall of the feed inlet and is communicated with the inside of the hopper, the lower part of the cylinder is fixed on a side wall of the shell, the screens are arc-shaped curved surfaces with a downward concave middle part, the screens are arranged in the cylinder side by side along a vertical direction, the aperture of each screen is gradually reduced from top to bottom, the upper end of each screen is fixed on different heights on the side wall of the cylinder, the lower end of each screen extends out of the lower part of the cylinder and extends to different parts above, and two sides of each screen are fixed on an inner side wall of the cylinder.

Preferably, the casing is a cylinder, a plurality of fixing holes are formed in the side wall of the casing, each fixing hole is formed in the circumferential direction of the central shaft of the casing, the cylinders are arranged around the central shaft of the casing in the circumferential direction, the lower ends of the cylinders extend out of the casing through the fixing holes, and the outer walls of the cylinders are fixed to the inner wall of the fixing holes.

Preferably, the screening assembly further includes a tray, one of the cylinders corresponds to one of the trays, the tray is fixed to the outer wall of the housing, the tray is located right below the lower end of the cylinder, a plurality of cup holders are fixed to the tray, a magnet is fixed to each of the cup holders, and each of the holding elements is placed in a different one of the cup holders and fixed by the magnet.

Preferably, the upper end of the shell is further provided with a sealing cover, the outer edge of the sealing cover is detachably connected with the outer edge of the upper top surface of the shell, the sealing cover can seal the upper end opening of the hopper, and a dust suction cavity is formed between the sealing cover and the upper end surface of the shell.

Preferably, a handle is further fixed on the upper end face of the cover, and the handle is used for being held by an operator.

Preferably, a dust suction assembly is further arranged outside the sealing cover, the dust suction assembly comprises a conveying pipe, a dust suction pump and a filter box, the upper end of the filter box is open, and the upper end opening of the filter box is detachably sealed by an upper cover, the filter box is used for containing liquid, the upper cover is provided with a dust inlet and an air outlet, one end of the conveying pipe is fixed on the upper end surface of the sealing cover, the conveying pipe is communicated with the interior of the dust suction cavity, the other end of the conveying pipe extends into the filter box through the dust inlet, the dust suction pump is fixed in the middle of the conveying pipe, and is used for guiding the dust in the dust suction cavity into the filter box, an air outlet pipe is fixed at the air outlet and can be communicated with the inner cavity of the filter box and the outside, and the distance between the lower end of the air outlet pipe and the inner bottom surface of the filter box is greater than the distance between the lower end of the conveying pipe and the inner bottom surface of the filter box.

Preferably, the vibration subassembly includes the bottom plate, passes the board that shakes, frequency modulation bobbing machine and a plurality of biography subassembly that shakes, the bottom plate with the biography is shaken the coaxial setting of board, and is arranged side by side along vertical direction, the biography shake the subassembly with the frequency modulation bobbing machine all is fixed in the bottom plate with pass between the board that shakes, the frequency modulation bobbing machine with the upper end of passing the subassembly that shakes is fixed the lower terminal surface of the board that shakes, the frequency modulation bobbing machine with the lower extreme that passes the subassembly that shakes is fixed the up end of bottom plate, just the frequency modulation bobbing machine is fixed in the central point of the board that shakes puts, each the biography shakes the subassembly and centers on the even circumference of frequency modulation bobbing machine is arranged, and each the biography is shaken the subassembly and is all close to the outward flange setting of the board that shakes.

Preferably, the biography subassembly that shakes is including passing spring, an upper fixed plate, bottom plate and a plurality of extension spring that shakes, an upper fixed plate fixes the lower terminal surface that the biography shakes the board, the bottom plate is fixed the up end of bottom plate, just pass spring and each that shakes the extension spring is all fixed an upper fixed plate with between the bottom plate, the upper end that the biography shakes the spring is fixed the central point of up fixed plate lower extreme face puts, the lower extreme that the biography shakes the spring is fixed the central point of bottom plate up end puts, each the extension spring centers on the even circumference of spring that shakes is fixed of biography, the upper end of extension spring is fixed the outward flange of upper fixed plate lower extreme face, the lower extreme of extension spring is fixed the outward flange of bottom plate up end.

Compared with the prior art, the invention has the following technical effects:

the grading screening device provided by the invention has the advantages that the upper end of the shell is provided with the plurality of feed inlets, one feed inlet corresponds to one screening component, different soil samples can be screened simultaneously, the screening efficiency is improved, the upper end of the hopper is positioned outside the shell, the soil samples can be conveniently fed into the hopper, the lower end of the hopper is positioned above the multistage screening components, the lower ends of the multistage screening components extend out of the shell and are positioned above the containing components, materials can be graded in the multistage screening components, the sorting of particles with various sizes is realized, the sorted particles respectively fall into the containing components, the containing components are positioned outside the shell and are used for containing the screened particles and are convenient to take, the automatic containing after sorting is realized, the screening efficiency is improved, the labor force is saved, the vibration component can drive the multistage screening components to vibrate, and the multistage screening components can screen the materials, thereby improve screening effect through the vibration, improve screening speed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of a classifying screen device provided by the present invention;

FIG. 2 is a schematic view of the connection between the hopper and the barrel of the classifying screen device provided by the present invention;

FIG. 3 is a schematic view of the connection between the cup holder and the container of the classifying screen device provided by the present invention;

FIG. 4 is a top view of a tray in the classifying screen device provided by the present invention;

FIG. 5 is a top view of a bottom plate of the classifying screen device provided by the present invention;

FIG. 6 is a schematic structural view of a vibration transfer assembly of the classifying screen device provided by the present invention;

in the figure: 100-grading screening device, 1-shell, 11-coaming plate, 12-snap ring, 2-vibration component, 21-bottom plate, 22-vibration transmission plate, 23-frequency modulation vibration machine, 24-vibration transmission component, 241-upper fixing plate, 242-lower fixing plate, 243-vibration transmission spring, 244-tension spring, 3-screening component, 31-hopper, 32-multistage screening component, 321-cylinder, 322-screen, 33-containing component, 34-tray, 35-cup holder, 351-chassis, 352-magnet, 4-sealing cover, 41-handle, 42-dust absorption tower, 43-buckle, 5-dust absorption component, 51-conveying pipe, 52-dust absorption pump, 53-air outlet pipe and 54-filter box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a grading screening device, which aims to solve the technical problems of low screening efficiency and labor waste of the existing screening device.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1-6, the present invention provides a classified screening device 100, which comprises a housing 1, a vibrating assembly 2 and a plurality of screening assemblies 3, wherein the upper end of the housing 1 is provided with a plurality of feeding ports, one feeding port corresponds to one screening assembly 3, so that different soil samples can be screened simultaneously, and screening efficiency is improved, each screening assembly 3 comprises a multistage screening element 32 and a plurality of containing elements 33, the multistage screening element 32 is located in the housing 1, the feeding ports are located above the multistage screening elements 32, so that the soil samples can enter the multistage screening elements 32 for screening, the lower ends of the multistage screening elements 32 extend out of the housing 1 and are located above the containing elements 33, the insides of the multistage screening elements 32 are communicated with the feeding ports, materials can be classified in the multistage screening elements 32, sorting of particles with various sizes is realized, the sorted particles fall into the containing elements 33 respectively, be convenient for hierarchical deposit analysis, splendid attire component 33 is located the outside of casing 1 for the granule after the splendid attire screening is accomplished, and conveniently takes, realizes the automatic splendid attire after selecting separately, improves screening efficiency, saves the labour, and vibration subassembly 2 can drive each multi-stage screening component 32 vibration, and makes multi-stage screening component 32 sieve the material, thereby improves the screening effect through the vibration, improves screening speed.

Specifically, screening subassembly 3 still includes a plurality of hopper 31, each feed inlet department all is fixed with a hopper 31, and the upper end of hopper 31 is located the outside of casing 1, conveniently drop into soil sample in the hopper 31 from the outside, be used for the splendid attire material in the hopper 31, and the both ends opening of hopper 31, and the internal diameter of hopper 31 reduces from top to bottom gradually, more excellent, hopper 31 is the hollow circular platform body of narrow down about wide, bottom internal diameter 150mm, top internal diameter 180mm, height 100mm, and hopper 31 and the inside intercommunication of multistage screening element 32, the lower extreme of hopper 31 and the upper end of multistage screening element 32 are all fixed on the inner wall of feed inlet, realize hopper 31 and multistage screening element 32's connection and fixed.

The multistage screening element 32 comprises a cylinder 321 and a plurality of screens 322, the cylinder 321 is a cylinder with two open ends, and the connecting line of the centers of the cross sections of the cylinder 321 is a curve with the middle part depressed downwards, so that soil samples can be conveniently fed and discharged, the screening area is increased, the screening effect is improved, and the multistage screening element is more preferable, the cylinder 321 is a 60-degree elbow, the outer diameter is 150mm, the wall thickness is 3mm, so that the soil particles can be optimally screened in a limited space, the 60-degree elbow can keep the optimal vibration screening effect of the flowing particles in the shortest stroke, the middle retention dead angle is avoided, the rolling jump forward movement of the particles is convenient, the upper end of the cylinder 321 is fixedly connected with the inner wall of the feeding port and is communicated with the interior of the hopper 31, and the more preferable, the lower end of the hopper 31 is provided with an internal thread, the upper end of the cylinder 321 is provided with an external thread, the lower end of the hopper 31 is in threaded connection with the upper end of the cylinder 321, the hopper 31 and the barrel 321 are connected and communicated, the lower part of the barrel 321 is fixed on the side wall of the shell 1, the screens 322 are arc curved surfaces with the middle part depressed downwards, preferably, three screens 322 are arranged in the barrel 321 at equal intervals up and down along the 60-degree tangential direction of the barrel 321, the bending degree of the screens 322 is the same as that of the barrel 321, the periphery of the screens 322 is fixed with the inner wall of the barrel 321 in a spot welding mode, the aperture of each screen 322 is gradually reduced from top to bottom, the upper end of each screen 322 is respectively fixed on the side wall of the barrel 321 at different heights, the lower end of each screen 322 extends out of the lower part of the barrel 321 and respectively extends to the upper parts of different containing elements 33, the two sides of the screens 322 are respectively fixed on the inner side wall of the barrel 321, so that soil particles are prevented from falling from gaps between the periphery of the screens 322 and the inner wall of the barrel 321, the sieving effect is influenced, the number of the containing elements 33 below each barrel 321 is one more than the number of the screens 322 in each barrel 321, and one containing element 33 is located below one screen 322, and the other containing element 33 is located to collect soil particles falling through the lowermost screen 322.

Casing 1 is the cylinder, it is more excellent, casing 1's external diameter 500mm, wall thickness 3mm, height 700mm, the internal diameter of feed inlet is 150mm, a plurality of fixed orifices has been seted up on casing 1's the lateral wall, the internal diameter of fixed orifices is 150mm, the even circumference of center pin along casing 1 of each fixed orifices sets up, and the even circumference setting of center pin around casing 1 of each barrel 321, casing 1 is stretched out through the fixed orifices to the lower extreme of barrel 321, and the outer wall of barrel 321 is fixed on the inner wall of fixed orifices, in order to realize the fixed of barrel 321 position, prevent at the vibration in-process, the skew by a wide margin of barrel 321, influence the alignment of screen cloth 322 and splendid attire component 33.

The screening assembly 3 further comprises a tray 34, a barrel 321 corresponds to the tray 34, the tray 34 is fixed on the outer wall of the casing 1, the tray 34 is located under the lower end of the barrel 321, preferably, the tray 34 is welded and fixed on the outer wall of the casing 1, and the shape of one side, close to the casing 1, of the tray 34 is consistent with the shape of the outer wall of the casing 1, so that the contact area between the tray 34 and the outer wall of the casing 1 is increased, and the welding stability is improved, a plurality of cup holders 35 are fixed on the tray 34, a magnet 352 is respectively fixed in each cup holder 35, each containing element 33 is respectively placed in different cup holders 35 and is fixed through the magnet 352, preferably, a chassis 351 is respectively fixed on the position, corresponding to each cup holder 35, the magnet 352 is embedded and fixed in the lower bottom surface of the chassis 351, the cup holder 35 is placed in the chassis 351, the containing element 33 is placed in the cup holder 35, and the containing element 33 is iron, can adsorb fixedly with magnet 352, prevent to topple over in the vibration process, influence work efficiency.

Casing 1's upper end still is equipped with a closing cap 4, the outward flange of closing cap 4 and the outward flange of casing 1 upper end face can be dismantled and be connected, it is more preferable, be fixed with an annular bounding wall 11 at casing 1's upper end outside edge, the inner wall and the casing 1 upper end outside wall fixed connection of annular bounding wall 11, and be equipped with a plurality of snap rings 12 on bounding wall 11's outer wall, closing cap 4 outer edge is equipped with a plurality of buckles 43, can dismantle the connection through buckle 43 and snap ring 12, realize closing cap 4 and casing 1's connection, closing cap 4 can seal the upper end opening of hopper 31, form the dust absorption chamber between closing cap 4 and casing 1's the up end, thereby at the screening in-process, seal the top opening of hopper 31 in the dust absorption chamber, prevent dust pollution, it is more preferable, closing cap 4 is lower extreme open-ended cylinder, closing cap 4's internal diameter 500mm, external diameter 506mm, high 150 mm.

The upper end surface of the sealing cover 4 is further fixed with two handles 41, and the two handles 41 are preferably used for being held by an operator and are respectively fixed on two sides of the upper end surface of the sealing cover 4.

The sealing cover 4 is also provided with a dust collection component 5 outside, the middle part of the upper end face of the sealing cover 4 is provided with a dust collection port, a truncated cone-shaped dust collection tower 42 is welded at the dust collection port, the dust collection tower 42 is narrow at the top and wide at the bottom, the dust collection tower 42 is hollow inside and has an opening at the bottom, the dust collection tower can provide a guiding effect on dust, and is conveniently and fixedly connected with the dust collection component 5, the lower end of the dust collection tower 42 is welded and fixed with the outer edge of the dust collection port and is communicated with a dust collection cavity, preferably, the bottom inner diameter of the dust collection tower 42 is 60mm, the top inner diameter is 40mm, the height is 50mm, the wall thickness is 3mm, the top of the dust collection tower 42 is provided with a hole with the diameter of 20mm for being connected and communicated with the dust collection component 5, the dust collection component 5 comprises a conveying pipe 51, a dust collection pump 52 and a filter box 54, the filter box 54 is used for containing liquid, the upper end opening of the filter box 54 is detachably sealed through an upper cover, and the filter box 54 is conveniently filled with the liquid, and pouring out the liquid, the upper cover is provided with a dust inlet and an air outlet, one end of a conveying pipe 51 is fixed at the top end of the dust absorption tower 42 and is communicated with the inside of the dust absorption tower 42, the other end of the conveying pipe 51 extends into a filter box 54 through the dust inlet, the lower end of the conveying pipe 51 extends into the liquid, a dust absorption pump 52 is fixed in the middle of the conveying pipe 51 and is used for guiding the dust generated in the screening process into the filter box 54 through a dust absorption cavity, the dust is prevented from being diffused into an operation space through the suction of the dust absorption pump 52, the working environment is protected, the dust is absorbed by the liquid in the filter box 54, the filtered water can be periodically replaced, the dust removal effect is improved, an air outlet pipe 53 is fixed at the air outlet, the air outlet pipe 53 can be communicated with the inner cavity of the filter box 54 and the outside, and the distance between the lower end of the air outlet pipe 53 and the inner bottom surface of the filter box 54 is larger than the distance between the lower end of the conveying pipe 51 and the inner bottom surface of the filter box 54, the lower extreme contactless liquid of outlet duct 53 to gaseous derivation to the external world after liquid filters, guarantee that rose box 54 is equal with external atmospheric pressure, utilize liquid to adsorb dust, avoid dust to pollute, more excellent, rose box 54 external diameter 450mm, wall thickness 3mm, height 450mm, conveyer pipe 51 is the hose, and the position angle is convenient to be adjusted.

The vibration component 2 comprises a bottom plate 21, a vibration transmission plate 22, a frequency modulation vibrator 23 and a plurality of vibration transmission components 24, the vibration component 2 is utilized to drive each screen mesh 322 to vibrate, the screening efficiency is improved, the bottom plate 21 and the vibration transmission plate 22 are coaxially arranged and are arranged side by side along the vertical direction, more preferably, the bottom plate 21 is a disc, is made of stainless steel, has the diameter of 650mm and the thickness of 10mm, four fixing holes with the diameter of 10mm are averagely distributed at the position which is 10mm away from the outer edge of the bottom plate 21, bolts penetrate through the fixing holes to fix the bottom plate 21 on other stable table tops, the vibration transmission components 24 and the frequency modulation vibrator 23 are both fixed between the bottom plate 21 and the vibration transmission plate 22, the upper ends of the frequency modulation vibrator 23 and the vibration transmission components 24 are fixed on the lower end face of the vibration transmission plate 22, the lower ends of the frequency modulation vibrator 23 and the vibration transmission components 24 are fixed on the upper end face of the bottom plate 21, the frequency modulation vibrator 23 is fixed at the central position of the vibration transmission plate 22, and the vibration transmission components 24 are uniformly arranged around the frequency modulation vibrator 23 in the circumferential direction, and each vibration transmission assembly 24 is arranged close to the outer edge of the vibration transmission plate 22, four fixing holes with the diameter of 8mm for fixing a fixed disc of the frequency modulation vibrator 23 are formed in the middle of the bottom plate 21, the fixed disc of the frequency modulation vibrator 23 is fixed in the middle of the bottom plate 21 through bolts, the fixed disc of the frequency modulation vibrator 23 is a disc, the diameter of the fixed disc is 200mm, the thickness of the fixed disc is 10mm, two groups of fixing holes are formed in the fixed disc of the frequency modulation vibrator 23, one group of fixing holes is the fixed disc of the frequency modulation vibrator 23 with the diameter of 8mm and is used for being connected with the bottom plate 21, the other group of fixing holes is the fixed disc of the frequency modulation vibrator 23 with the diameter of 6mm and is used for being connected with the frequency modulation vibrator 23, four groups of screw holes are formed in each way, the vibration transmission plate 22 is a disc, the diameter of 550mm and the thickness of 10mm, and the lower end face of the shell 1 is welded in the middle of the upper end face of the vibration transmission plate 22.

The vibration transmission assembly 24 includes a vibration transmission spring 243, an upper fixing plate 241, a lower fixing plate 242 and a plurality of tension springs 244, the vibration transmission spring 243 is a high-elasticity spring, the vibration is transmitted to the vibration transmission plate 22 under the vibration of the frequency-modulated vibrator 23, the upper fixing plate 241 is fixed on the lower end surface of the vibration transmission plate 22, the lower fixing plate 242 is fixed on the upper end surface of the bottom plate 21, the vibration transmission spring 243 and each tension spring 244 are fixed between the upper fixing plate 241 and the lower fixing plate 242, the upper end of the vibration transmission spring 243 is fixed on the central position of the lower end surface of the upper fixing plate 241, the lower end of the vibration transmission spring 243 is fixed on the central position of the upper end surface of the lower fixing plate 242, each tension spring 244 is uniformly fixed circumferentially around the vibration transmission spring 243, the upper end of each tension spring 244 is fixed on the outer edge of the lower end surface of the upper fixing plate 241, the lower end of each tension spring 244 is fixed on the outer edge of the upper fixing plate 242, three groups of fixing holes with the diameter of 6mm for fixing the lower fixing plate 242 are uniformly arranged on the bottom plate 21 at a distance of 100mm from the outer edge, each group comprises three holes which are arranged in an equilateral triangle, the lower fixing plate 242 is fixed on the bottom plate 21 through bolts, the lower fixing plate 242 and the upper fixing plate 241 are both discs, the diameter of each disc is 100mm, the thickness of each disc is 5mm, three fixing holes are uniformly formed in the positions, 5mm away from the outer edge, of the lower fixing plate 242 and the upper fixing plate 241 and are respectively used for being fixedly connected with the bottom plate 21 and the vibration transmission plate 22, a round pipe with the outer diameter of 60mm, the wall thickness of 5mm and the height of 50mm is respectively welded at the middle parts of the upper fixing plate 241 and the lower fixing plate 242 and is used as a seat bowl of the vibration transmission spring 243, two ends of the vibration transmission spring 243 are respectively fixed in the two seat bowls, three hanging rings are respectively welded on the upper fixing plate 241 and the lower fixing plate 242 and are respectively arranged close to the outer edges of the upper fixing plate 241 and the lower fixing plate 242 and are used for being detachably connected with two ends of the tension spring 244, the vibration transmission spring 243 can not jump out in the seat bowl all the time in the vibration process, meanwhile, the tightness of the tension spring 244 also has an auxiliary vibration effect on the vibration of the vibration spring 243.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.

Claims

1. A grading and sieving device is characterized in that: comprising a casing, a vibrating assembly and several screening assemblies, the upper end of the casing is provided with several feeding ports, and one described feeding port corresponds to one The screening assembly includes a multi-stage screening element and a plurality of containing elements, the containing elements are located outside the casing, the multi-stage screening elements are located in the casing, and the inlet The material port is located above the multi-stage screening element, and the interior of the multi-stage screening element is communicated with the feed port, and the lower end of the multi-stage screening element protrudes from the shell and is located in the container Above the element, the material can be classified in the multi-stage screening element and fall into each of the containing elements respectively. The vibration component can drive each of the multi-stage screening elements to vibrate and make the multi-stage screening elements vibrate. The grade screening element sieves the material;

The screening assembly also includes a plurality of hoppers, one of which is fixed at each of the feeding ports, the upper end of the hopper is located outside the casing, the two ends of the hopper are open, and all the hoppers are open. The inner diameter of the hopper gradually decreases from top to bottom, the lower end of the hopper and the upper end of the multi-stage screening element are fixed on the inner wall of the feeding port, and the hopper and the multi-stage screening element are fixed on the inner wall of the feeding port. Internal communication of components;

The multi-stage screening element includes a cylinder body and a plurality of screen meshes, the cylinder body is a cylinder with two ends open, and the connecting line between the centers of each cross-section of the cylinder body is a downwardly concave curve in the middle, so The upper end of the cylinder is fixedly connected with the inner wall of the feed port and communicated with the inside of the hopper, the lower part of the cylinder is fixed on the side wall of the shell, and the screen is recessed downward in the middle. Each screen is arranged side by side in the cylinder along the vertical direction, and the aperture of each screen gradually decreases from top to bottom, and the upper end of each screen is respectively fixed on the With different heights on the side wall of the cylinder body, the lower ends of the screen meshes protrude from the bottom of the cylinder body and extend to the top of the different containing elements respectively, and both sides of the screen meshes are fixed on the cylinder body. on the inner wall of the body.

2 . The grading and screening device according to claim 1 , wherein the casing is a cylinder, and a plurality of fixing holes are opened on the side wall of the casing, and each fixing hole is along the The central axis of the casing is evenly arranged circumferentially, and each of the cylinders is evenly arranged circumferentially around the central axis of the casing, the lower end of the cylindrical body protrudes out of the casing through the fixing hole, and the The outer wall of the cylinder is fixed on the inner wall of the fixing hole.

3 . The grading and screening device according to claim 2 , wherein the screening assembly further comprises a tray, one of the cylinders corresponds to one of the trays, and the tray is fixed on the outer wall of the shell. 4 . , and the tray is located just below the lower end of the cylinder, a plurality of cup holders are fixed on the tray, a magnet is fixed in each cup holder, and each of the containing elements is placed in a different inside the cup holder and secured by the magnets.

4 . The grading and screening device according to claim 1 , wherein the upper end of the casing is further provided with a cover, and the outer edge of the cover is detachable from the outer edge of the top surface of the casing. 5 . connected, and the cover can close the upper end opening of the hopper, and a dust suction cavity is formed between the cover and the upper end surface of the casing.

5 . The grading and screening device according to claim 4 , wherein a handle is also fixed on the upper end surface of the cover, and the handle is used for the operator to hold the handle. 6 .

6 . The grading and screening device according to claim 4 , wherein a dust suction assembly is further provided outside the cover, and the dust suction assembly comprises a conveying pipe, a suction pump and a filter box, and the filter box The upper end is open, and the upper end opening of the filter box is detachably closed by an upper cover. The filter box is used to hold liquid. The upper cover is provided with a dust inlet and an air outlet. One end of the conveying pipe It is fixed on the upper end surface of the cover, and the conveying pipe is communicated with the interior of the dust suction chamber. The other end of the conveying pipe extends into the filter box through the dust inlet, and the dust suction The pump is fixed in the middle of the conveying pipe, and is used to introduce the dust in the dust suction chamber into the filter box, an air outlet pipe is fixed at the air outlet, and the air outlet pipe can communicate with the inner cavity of the filter box and the outside, and the distance between the lower end of the air outlet pipe and the inner bottom surface of the filter box is greater than the distance between the lower end of the conveying pipe and the inner bottom surface of the filter box.

7 . The grading and screening device according to claim 1 , wherein the vibration assembly comprises a base plate, a vibration transmission plate, a frequency modulation vibrator and a plurality of vibration transmission assemblies, and the base plate and the vibration transmission plate are coaxial. 8 . The vibration transmission components and the frequency modulation vibration machine are both fixed between the bottom plate and the vibration transmission plate, and the upper ends of the frequency modulation vibration machine and the vibration transmission components are fixed On the lower end surface of the vibration transmission plate, the lower end of the frequency modulation vibration machine and the vibration transmission assembly are fixed on the upper end surface of the base plate, and the frequency modulation vibration machine is fixed at the center position of the vibration transmission plate, and each The vibration transmission components are evenly arranged circumferentially around the frequency modulation vibrating machine, and each of the vibration transmission components is arranged close to the outer edge of the vibration transmission plate.

8 . The grading and screening device according to claim 7 , wherein the vibration transmission assembly comprises a vibration transmission spring, an upper fixing plate, a lower fixing plate and a plurality of tension springs, and the upper fixing plate is fixed on the the lower end surface of the vibration transmission plate, the lower fixed plate is fixed on the upper end surface of the bottom plate, and the vibration transmission spring and each of the tension springs are fixed between the upper fixed plate and the lower fixed plate, The upper end of the vibration transmission spring is fixed at the center position of the lower end surface of the upper fixed plate, the lower end of the vibration transmission spring is fixed at the center position of the upper end surface of the lower fixed plate, and each tension spring surrounds the vibration transmission The springs are uniformly fixed circumferentially, the upper end of the tension spring is fixed on the outer edge of the lower end surface of the upper fixing plate, and the lower end of the tension spring is fixed on the outer edge of the upper end surface of the lower fixing plate.