RU194754U1 - Vibrating screen - Google Patents

Abstract

The utility model relates to the mining, coal industry, and in particular to devices for separating bulk and bulk materials into particles of different sizes. The vibrating screen includes at least two driveshafts, at least two rubber couplings, at least two lifting beams, a drive, vibration exciter, at least two sides made of solid sheet material, while the sides are fastened between each other by transverse beams having a square section, and on the beams there are decks with guides fixed to them, made with lock fastening, a vibrator beam is installed between the sides, sieving surfaces are fixed on the guides. The technical result consists in increasing the reliability of the screen and, as a result, increasing the life of the screen. 9 s.p. f-ly, 13 ill.

Description

Application area

     [001] The utility model relates to the mining and coal industries, and in particular, to devices for separating bulk and bulk materials into particles of different sizes using sieving surfaces with calibrated holes (of a certain length and width). It is used for screening rocks, bulk building materials, in laboratories for fractional analysis of bulk materials. It is also used for dehydration of various materials (enriched coal, washed ores).

State of the art

     [002] A vibrating screen SU 1235555 is known (publ. 07.06.198). The screen contains a frame, a box in the form of separate sections, mounted on the frame using shock absorbers. Each section of the box is equipped with a high-frequency vibrator. The sieve is also made of separate sections interconnected by flexible tapes. Each section of the sieve is fixed on a rigid frame. The aim of the invention is to improve the quality of the screening process by ensuring uniform vibrations over the entire surface of the sieve.

     [003] The disadvantages of this technical solution are low reliability due to the use of boxes made in the form of separate sections.

     [004] Also from the prior art, a vibrating screen for sorting solid household waste RU112651 (publ. 20.01.2012) is known. A vibrating screen for sorting solid household waste, including a box, a vibration exciter and a work surface made in the form of several horizontal tiers, each tier being formed by a transverse support beam and parallel wedge-shaped gantry plates attached to it at one end, the vertical end of which is left free, while the grid-irons of each tier form sieving gaps between themselves, characterized in that the physical parameters of the plates are selected in such a way at the same time, to ensure the frequency of free vibrations of the plates corresponding to the condition 1.05 fv≤fs≤1.20 fv, where fc is the frequency of free vibrations of the plates; fв - frequency of forced oscillations of the plates.

     [005] The disadvantage of such a screen is the insufficiently reliable performance of the tiers, which are formed by a transverse support beam and parallel wedge-shaped plates attached to it by one end in vertical projection, low reliability of execution of such tiers occurs, including due to the use of a cross-section beam of circular cross section.

     [006] In addition, the known vibrating screen RU 176729 (publ. 25.01.2018).

     [007] The utility model relates to devices for separating bulk materials by size and can be used in mining, metallurgy, construction industry, etc. The vibrating screen contains a carrier box with sides mounted on elastic supports, and a kinematically coupled to the box vibrodrive. The sieve of the screen is equipped with vertical longitudinally oriented partitions, which in plan have a wavy shape. Partitions divide the sieve into sieving troughs, separated from each other by gaps. The screening troughs have a constant flow area along the length. The height of the partitions is guaranteed to exceed the height of the bulk layer. The bottom of the gutters and the bottom of the gaps lie in one plane and form a single bottom of the sieve. The holes in the perforated partitions have the same determining size as the holes in the bottom of the sieving troughs, and the holes in the bottom of the gaps are significantly larger. The purpose of the gaps is to provide the fastest possible removal of the material falling into them, sifted through holes in the partitions. The use of partitions of a special design and the separation of the sieve into functional zones leads to an increase in specific productivity and screening efficiency.

     [008] The disadvantage of such a screen is the location of the vibrodrive and its connection with the box, which helps reduce the service life of the screen due to the impact of the vibrodrive on the sides of the box, the drawbacks of the boxes being welded can also be considered disadvantages, which reduces their reliability under vibration loads.

     [009] Known vibrating screen RU 144479 (publ. 08/20/2014)

     [0010] A vibrating screen of an agglomerate, including a body with sides, a vibration exciter, a receiving and screening surface made of metal sheets sectional along the length and width of the screen, bolted to the U-shaped support elements of a given thickness, characterized in that the sheets the receiving surface is made thicker than the thickness of the sheets of the screening surface, and the horizontal shelf of the U-shaped support element is made thicker than the thickness of each of its vertical walls, p Moreover, the surface forming the head of the bolt, each of the bolted joints, is provided with at least one flat, while the head is placed between the vertical walls of the U-shaped support elements. 2. Vibrating screen according to claim 1, characterized in that the thickness of the sheets of the receiving surface is 1.8 ÷ 2.2 thickness of the sheets of the screening surface. 3. Vibrating screen according to claim 1, characterized in that the thickness of the horizontal shelf of the U-shaped support element is 1.7 ÷ 2.3 of the thickness of each of its vertical walls. 4. Vibrating screen according to claim 1, characterized in that each of the bolted joints is equipped with a set of annular spring washers.

     [0011] The disadvantage of this screen is the lack of reliability, due to the fact that the mounting method of the screening surface, as well as the presence of breathers in the vibrators, as a result of which coal dust can accumulate and the vibrator may fail.

     [0012] The roar US 2016256895 (publ. 08.09.2018) is also known, selected for the prototype.

     [0013] The screen includes elastic screen cladding elements that are attached to the first and second cross members, the first and second cross members being alternately arranged in the vibrating frame of the screening device. The first crossbars are rigidly connected to the frame, and the second crossbars are installed in the frame using spring elements. The frame has openings for accommodating spring elements, the openings being located in the region of the ends of the second cross members.

     [0014] The disadvantage of such a screen is that the sides of the screen are made welded, in addition, the transverse beams do not have a large margin of safety, as a result of which the life of the screen is reduced.

Short description

     [0015] The objective of the claimed device is the effective screening of rocks, bulk building materials, that is, the effective separation of lumpy or bulk materials into particles of different sizes using sieving surfaces with calibrated holes, as well as classifying various bulk materials and mineral processing.

     [0016] The technical result of the claimed utility model is to increase the reliability of the screen and, as a result, to increase the life of the screen.

     [0017] The technical result is achieved by increasing the strength characteristics of the design of the screen, due to the fact that the vibrating screen includes at least two driveshafts, at least two rubber couplings, at least two lifting beams, a drive, a vibration exciter, at least two sides made of solid sheet material, while the sides are fastened together by transverse beams having a square section, and decks are installed on the beams, with guides fixed from them with locks fastening, and fastened on the guide surface of the sieve, between boards installed podvibratornaya beam ..

     [0018] It is possible to perform a vibrating screen in which the sides of the screen are covered with elastic material.

     [0019] It is possible to perform a vibrating screen in which the transverse beams are covered with elastic material.

     [0020] It is possible to perform a vibrating screen in which the vibration exciter is sealed.

     [0021] It is possible to perform a vibrating screen in which the transverse beams are pre-heat treated.

     [0022] It is possible to perform a vibrating screen in which the vibrator beam is thermally processed.

     [0023] It is possible to perform a vibrating screen in which the entire structure of the screen is fastened with HAK bolts (HUCK bolts).

     [0024] It is possible to perform a vibrating screen in which I drive is placed on the outside of the side.

     [0025] It is possible to perform a vibrating screen in which the drive is placed between the sides.

     [0026] It is possible to perform a vibrating screen in which the guides are made of polyurethane.

Description of drawings

     [0027] Figure 1 shows a General view of the roar of the vibration

     [0028] Figure 2 shows a general view of a vibrating screen with a demonstration of the transverse beams.

     [0029] Figure 3 shows a General view of the sub-vibrator beam.

     [0030] Figure 4 shows a side of a vibrating screen.

     [0031] Figure 5 shows a guide made with a lock fastener.

     [0032] Figure 6 shows the location of the drive from the outside.

     [0033] Figure 7 shows the location of the drive between the sides of the screen.

     [0034] In figures 8, 9, 10, 11, 12, 13, embodiments of the vibrating screen are shown.

     [0035] Position 1 - lifting beam

     [0036] Position 2 on board

     [0037] Position 3 - sub-vibrator

     [0038] Position 4 - the transverse beam

     [0039] Position 5 - drive

     [0040] Position 6 - screening surface

     [0041] Position 7 is a guide

     [0042] Position 8 is the deck

Detailed description of utility model

     [0043] The following detailed description of a utility model implementation provides numerous implementation details to provide a clear understanding of the present utility model. However, it is obvious to a specialist qualified in the subject field how to use this real utility model, both with and without these implementation details. In other cases, well-known methods, procedures, and components are not described in detail, so as not to impede unnecessarily understanding the features of this utility model.

     [0044] The vibrating screen includes: at least two cardan shafts, at least two rubber couplings, at least two lifting beams 1, drive 5, vibration exciter, at least two sides 2, which are made of solid sheet material and do not have welds, and therefore have greater strength and reliability in comparison with welded sheets, because under the influence of vibration, microcracks can occur in the places of welds, which, over time, under the influence of vibration and shock loads can grow, which leads to a violation of the integrity of side 2 and failure of the screen, while sides 2 made of solid sheet material are resistant to formation microcracks, as they do not have welds and therefore have greater strength, reliability and durability, which affects the increase in the strength and reliability of the screen design and, as a consequence, the increase in the life of the screen, various metal alloys can be used to make the 2 screens of the vibrating screen, most preferably the sides 2 are made of steel ;

     [0045] while the sides 2 are fastened together by transverse beams 4 having a square section, the transverse beams 4 of the square section are made of various metal alloys, it is preferable to make the transverse beams 4 of steel, and the design of the transverse beams 4 in the form of a pipe with a square section provides greater reliability structures due to the presence of stiffening ribs in hollow transverse beams with a square cross section, so if the bending force is directed at an angle of 90 degrees to the profile face, the bending resistance is the same anywhere t the ruby. The bending load is the strongest along the edges of the profile, while its central part is much more stable, in addition, due to the uniform distribution of metal along the profile perimeter, square pipes are characterized by high inertia radii with respect to their cross-sectional area, so the use of transverse beams with a square section increases strength characteristics of the design of the vibrating screen, which entails an increase in the reliability of the design of the vibrating screen as a whole;

     [0046] decks 8 are mounted on the beams, with guides 7 mounted on them, made of polyurethane with lock fastening, sieving surfaces 6 are fixed on the guides 7, which ensures quick detachment, and also eliminates wear of the screen elements at the attachment point, because there are no mounting holes in places where play can occur due to vibration and the structure breaks up over time, which reduces the strength and reliability of the structure and, as a result, the service life, thus, the use of lock guides eliminates the wear factor of the mounting elements under vibration, except Moreover, the guide 7 made by locking fastening provides a tight attachment of the screening surface 6 to the guide 7, as well as the execution of the guide 7 from the floor urethane provides pliability locking fastening and tight attachment of the screening surface 6 moreover ensures quick-screening surface 6 for its quick replacement; between the sides of the installed vibrator beam 3.

     [0047] It is possible to perform a vibrating screen, in which the sides of the 2 screens are coated with elastic material, which provides damping of vibrations propagating to the sides of the 2 screens and, as a result, prevents cracks on the sides of the 2 screens and various other negative effects of vibration, in addition, the coating of the sides with elastic material 2 screens provide protection against shock loads that arise due to uncontrolled, arbitrary movement of the rattling material, i.e. various lumpy material, rocks, coal, etc., which in turn increases the strength of the sides 2, their reliability and as a result affects the increase in strength, reliability of the design of the screen as a whole and as a result - increase the life of the screen. As an elastic material, polyurethane, rubber, rubber can be used; the most preferred option is to use TYPE TOP rubber.

     [0048] It is possible to perform a vibrating screen in which the transverse beams 4 are coated with elastic material, which provides damping of vibrations propagating to the transverse beams 4 and, as a result, prevents the occurrence of cracks and various other negative effects of vibration, in addition, the coating with elastic material of the transverse beams 4 provides protection from shock loads that arise due to uncontrolled, arbitrary movement of the sifted material, i.e. various lumpy material, rocks, coal, etc., which in turn increases the strength of the transverse beams 4, their reliability and, as a consequence, increase the strength and reliability of the screen design as a whole and, as a result, increase the life of the screen. As an elastic material, polyurethane, rubber, rubber can be used; the most preferred option is to use TYPE TOP rubber.

     [0049] It is possible to perform a vibrating screen in which the exciter is sealed, i.e. there are no breathers in it, and therefore the dust generated from the sifted material does not get into the vibration exciter and, accordingly, the vibration exciter elements are not influenced by small particles, which negatively affect the vibration exciter operation and increase the wear of vibration exciter parts, which reduces its reliability and durability, thus making the vibration screen in which the vibration exciter is made airtight ensures the reliability of the vibration exciter, which affects the reliability of the screen, increasing intrinsic characteristics of the design of the screen as a whole and, as a result, an increase in the life of the screen.

     [0050] It is possible to perform a vibrating screen in which the transverse beams 4 are heat-treated beforehand, which ensures a change in the internal structure of the material, the residual stresses of the transverse beams 4 are removed, which entails an increase in the strength characteristics of the transverse beams 4 and increases their reliability, thereby affecting the increase reliability of the screen and its strength and, as a result, an increase in the life of the screen.

     [0051] It is possible to perform a vibrating screen in which the sub-vibrator beam 3 is thermally processed, which ensures a change in the internal structure of the material, the residual stresses of the sub-vibrator beam 3 are removed, which entails an increase in the strength characteristics of the sub-vibrator beam 3 and increases its reliability, thereby affecting the increase in reliability screen and its strength and as a result - increase the life of the screen.

     [0052] It is possible to perform a vibrating screen in which the entire structure of the screen is fastened with locking (HAK) bolts, that is, a two-component metal fastener used to simultaneously connect two or more metal parts. This fastener system is a pin with a transverse notch and a crimp ring. Using a special tool (pneumohydraulic or hydraulic), the ring is crimped onto the pin and a durable one-piece, reliable, tight and safe connection is created that can withstand heavy loads.

     [0053] Such bolts are characterized by high tensile and shear strength, regardless of the thickness of the materials to be joined, as well as resistance to vibration, because Owing to their design features, HAC bolts (HUCK bolts) create high-strength and non-separable joints, which ensures an increase in the strength characteristics of the screen design, an increase in the reliability of the screen and, as a result, an increase in the life of the screen. In addition, HAC bolts (HUCK bolts) provide high speed and ease of installation.

     [0054] the Possibility of placing the actuator 5 in the middle of the screen, ie between the sides or from the outside of the side 2 (from the side of the screen) provides ease of use and the versatility of the vibration screen.

     [0055] Thus, due to the features of the claimed utility model, “vibrating screen”, the reliability of the screen is improved by increasing the strength characteristics of the screen structure and, as a result, increasing the life of the screen.

     [0056] The claimed design features are applicable to various embodiments of the vibrating screen, examples of embodiments are shown in figures 8, 9, 10, 11, 12, 13.

     [0057] The present application materials provide a preferred disclosure of the implementation of the claimed technical solution, which should not be used as limiting other, private embodiments of its implementation, which do not go beyond the requested scope of legal protection and are obvious to specialists in the relevant field of technology.

Claims (10)

1. The vibrating screen, including at least two cardan shafts, at least two rubber couplings, at least two lifting beams, a drive, vibration exciter, at least two sides made of solid sheet material, while the sides are fastened together by transverse beams having a square section, and decks are installed on the beams with guides fixed to them, made with lock fastening, a vibrator beam is installed between the sides, sieving surfaces are fixed on the guides. 2. The vibrating screen according to claim 1, characterized in that the sides of the screen are covered with elastic material. 3. The vibrating screen according to claim 1, characterized in that the transverse beams are covered with elastic material. 4. The vibrating screen according to claim 1, characterized in that the vibration exciter is sealed. 5. The vibrating screen according to claim 1, characterized in that the transverse beams are pre-heat-treated. 6. The vibrating screen according to claim 1, characterized in that the sub-beam is thermally processed. 7. The vibrating screen according to claim 1, characterized in that the entire structure of the screen is fastened with HAK bolts. 8. The vibrating screen according to claim 1, characterized in that it is arranged to accommodate the drive from the outside of the side. 9. The vibrating screen according to claim 1, characterized in that it is arranged to accommodate the drive between the sides of the screen. 10. The vibrating screen according to claim 1, characterized in that the guides are made of polyurethane.

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