Large flip-flop screen with octagonal tube support structure

Abstract

The present application relates to the technical field of ore dressing equipment, in particular to a large-scale flip-flop screen with an octagonal tube supporting structure, a supporting beam comprising an octagonal tube and end plates arranged at both ends of the octagonal tube and fixed to the inner side wall of a screen box; a fixed hoop is clamped on the octagonal tube; a supporting strip comprises a strip-shaped plate fixed to the top of the fixed hoop, a sleeve ring fixed to the strip-shaped plate, a vertical rod slidingly sleeved in the sleeve ring, a spherical shell fixed to the top end of the vertical rod, a ball head rotatably sleeved in the spherical shell, and an internally threaded pipe fixed to the top end of the ball head; a lower strip arranged above the strip-shaped plate is provided with perforations three; a plurality of strip-shaped screen meshes are arranged in a horizontal staggered manner, and both sides of the strip-shaped screen mesh are provided with perforations one; a connecting piece is sequentially sleeved with the perforations one, three, and the internally threaded pipe; the top surface of an edge beam fixed to the inner side wall of the screen box and located below the strip-shaped screen mesh is provided with a threaded hole; and the problem that the flexible screen mesh in the large-scale flip-flop screen is inconvenient to assemble and maintain is better solved.

Description

Technical Field

[0001] This invention relates to the field of mineral processing equipment technology, specifically to a large tension screen with an octagonal tube support structure. Background Technology

[0002] The tension screen is a new type of screening machinery developed from the traditional circular vibrating screen in the early 1980s. The screen mesh is made of stretchable polyurethane rubber material. During operation, the screen mesh alternately tensions and relaxes, causing the material to bounce forward, preventing material from sticking to the screen and clogging the screen holes. Simultaneously, due to the use of flexible screen plates, the projectile acceleration reaches 30-50 times the acceleration due to gravity, and the maximum amplitude of the screen plate can reach 40mm. Therefore, the screen holes are not easily clogged, and the screening efficiency is improved, with a large throughput, low dynamic load, low power consumption, and low noise. Through resonance, one drive provides two vibrations. The dynamic screen plate achieves high acceleration through tension and relaxation. The two vibrating masses vibrate relative to each other at the same frequency, causing the screen plate to produce tension and relaxation motions. The relative linear motion of the two vibrating masses is adjustable to optimize equipment operation. All necessary parameters can be adjusted according to the different materials being screened. The tension screen adopts a dual vibration principle of basic vibration and additional vibration. The basic vibration is a circular vibration generated by the rotation of the rotating eccentric block, and the additional vibration is an elliptical vibration generated by the basic vibration.

[0003] To increase the throughput per unit area of ​​tension screens, large tension screens are commonly used in some mineral processing industries for screening fine-grained and sticky materials. The main components of a tension screen include a screen box, support frame, box-type vibrator, motor, and elastic support components. The screen box contains support beams for mounting the flexible screen mesh, and a crossbeam is fixed to the top of the screen box. The box-type vibrator is fixed at both ends of the crossbeam, and the elastic support components support and connect the two sides of the screen box to the top of the support frame. Because the screen box of a large tension screen is wider, the span of its crossbeams and support beams also increases accordingly, placing more stringent requirements on the mechanical properties of the beams. Correspondingly, the area of ​​the flexible screen mesh is also larger. However, traditional tension screens are generally equipped with a single sheet of flexible screen mesh. This means that if even one part of the large sheet of mesh is damaged, the entire sheet needs to be replaced, resulting in a large workload and potential waste. Furthermore, the installation of large-size flexible screens not only requires a secure installation but also necessitates that the flexible screen can be alternately tensioned and relaxed to match the screen box. However, currently, there is no good solution to these problems in the application of tension screens. Summary of the Invention

[0004] The purpose of this invention is to provide a large tension screen with an octagonal tube support structure to solve the problem that the flexible screen mesh in the existing large tension screen is inconvenient to assemble and maintain.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a large tension screen with an octagonal tube support structure, comprising a support frame, an elastic element installed at the top of the support frame, a screen box with its front and rear ends respectively connected to the top of the elastic element, and a crossbeam connected between the tops of the two side walls of the screen box for installing a box-type vibrator. The support beam includes an octagonal tube and end plates disposed at both ends of the octagonal tube and fixedly connected to the inner side wall of the screen box. The fixing hoops are uniformly clamped onto the octagonal tube in the transverse direction. The support strip includes a strip plate extending longitudinally and whose bottom is fixedly connected to the top of the fixing hoops, a plurality of collars fixedly fitted on the strip plate, a vertical rod slidably fitted in the collars, and a rod fixed to the vertical rod. The device comprises a spherical shell at the top, a ball head rotatably fitted within the spherical shell, and an internally threaded tube fixed vertically to the top of the ball head; a lower strip is arranged parallel above the strip plate, and the lower strip has a through hole three corresponding to the position of the internally threaded tube; multiple strip-shaped screens extending vertically are arranged in a transverse staggered pattern, and the two sides of the strip-shaped screens have a through hole one corresponding to the through hole three; the connector passes through the through hole one and through hole three in sequence and is threadedly connected to the internally threaded tube; a side beam is fixed to the inner side wall of the screen box and located below the strip-shaped screen, and the top surface of the side beam has a threaded hole corresponding to the position of the through hole one, which matches the threaded connection of the bottom end of the connector.

[0006] Preferably, the fixing hoop includes a semi-circular hoop one that engages with the bottom of the octagonal tube, a semi-circular hoop two that engages with the top of the octagonal tube, a stitching bolt for fixing the two ends of the semi-circular hoop one to the two ends of the semi-circular hoop two respectively, and a screw rod one fixed vertically to the top surface of the semi-circular hoop two. The bottom of the strip plate is fixed with a slot that engages with the top of the semi-circular hoop two, and the strip plate is provided with a through hole two that engages with the screw rod.

[0007] Preferably, the octagonal tube is formed by cold rolling of steel pipe.

[0008] Preferably, a base plate is fixed to the bottom end of the vertical rod, and a spring is fitted onto the vertical rod at the position between the top surface of the base plate and the bottom surface of the strip plate.

[0009] Preferably, the connector includes a screw three that is threadedly fitted to the internal threaded tube and the threaded hole, and a short post fixedly abutting the top end of the screw three.

[0010] Preferably, a hemisphere is fixed at the top of the short column, and a pressure strip is provided on the top surface of the strip-shaped screen at the stubble end, which is matched with the bottom end of the hemisphere. The bottom surface of the pressure strip is provided with a strip groove along the axial direction, which is matched with the short column along the longitudinal direction. The pressure strip is provided with a semi-cylindrical cavity along the axial direction at the position above the strip groove, which is matched with the hemisphere.

[0011] Preferably, the outer edges of the strip-shaped screen located on both sides are respectively provided with side strips, the bottom surface of the side strips is provided with a strip groove along the axial direction to slide and engage with the short column in the longitudinal direction, and the side strips are provided with a semi-cylindrical cavity along the axial direction above the strip groove to slide and engage with the hemisphere.

[0012] Preferably, the two side walls of the screen box are provided with multiple side holes at the positions corresponding to the central axis of the side wall of the side beam. The outer side wall of the side beam is fixed with a screw rod two that matches the side hole. The outer end of the screw rod two passes through the side hole and is threaded with a fastening nut.

[0013] Preferably, the strip plate is a rigid plate, the lower strip is an elastic bendable plate, and the strip-shaped screen, pressure strip, and edge strip are respectively cast from polyurethane.

[0014] Preferably, multiple reinforcing beams are fixedly connected between the top of the two side walls of the sieve box.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The flexible screen surface of the large tension screen with octagonal tube support structure of the present invention is composed of multiple strip-shaped screens. When a certain area of ​​the screen surface is damaged, only the corresponding strip-shaped screen is replaced, which reduces the difficulty of overall assembly and maintenance of the flexible screen surface and reduces the cost of use.

[0017] 2. The large tension screen with octagonal tube support structure of the present invention uses support strips, lower strips and connecting parts to form a fixing component for the screen surface. This not only firmly fixes the screen surface, but also allows the flexible screen mesh to adapt well to the vibration of the screen box and continuously tighten and loosen, thereby greatly improving the screening efficiency.

[0018] 3. The support beam in the large tension screen with octagonal tube support structure of the present invention is an octagonal tube structure, which improves the mechanical properties and can better meet the rigidity and strength requirements of the large tension screen box. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the supporting beam of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the strip-shaped screen of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the edge strip of the present invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the pressure strip of the present invention;

[0024] Figure 6 This is a three-dimensional structural diagram of the fixing hoop of the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the supporting strip of the present invention;

[0026] Figure 8 This is a three-dimensional structural diagram of the lower strip of the present invention;

[0027] Figure 9 This is a three-dimensional structural diagram of the edge beam of the present invention;

[0028] Figure 10 This is a three-dimensional structural diagram of the connector of the present invention;

[0029] Figure 11 For the present invention Figure 1 Enlarged structural diagram at point A;

[0030] Figure 12 For the present invention Figure 1 A magnified structural diagram at point B in the middle.

[0031] In the diagram: 1 - Support frame;

[0032] 2-Elastic element;

[0033] 3-Screen box; 3.1-Side opening;

[0034] 4-Crossbeam;

[0035] 5-Support beam; 5.1-Octagonal tube; 5.2-End plate;

[0036] 6-Reinforced beam;

[0037] 7-Strip screen; 7.1-Perforation 1;

[0038] 8-Side strip; 8.1-Strip groove one; 8.2-Semi-cylindrical cavity one;

[0039] 9-Pressure strip; 9.1-Strip groove two; 9.2-Semi-cylindrical cavity two;

[0040] 10-Fixing hoop; 10.1-Half-ring hoop one; 10.2-Half-ring hoop two; 10.3-Sealing bolt; 10.4-Threaded rod one;

[0041] 11-Support strip; 11.1-Strip plate; 11.1.1-Perforation 2; 11.2-Slot; 11.3-Collar; 11.4-Vertical rod; 11.5-Spherical shell; 11.6-Ball head; 11.7-Internal threaded tube; 11.8-Base; 11.9-Spring;

[0042] 12-Lower strip; 12.1-Perforation three;

[0043] 13-Side beam; 13.1-Threaded hole; 13.2-Second screw; 13.3-Fasting nut;

[0044] 14-Connector; 14.1-Screw three; 14.2-Short column; 14.3-Hemisphere. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Please see Figure 1-12 This invention provides a technical solution for a large tension screen with an octagonal tube support structure, comprising a support frame 1, an elastic element 2 installed at the top of the support frame 1, a screen box 3 with its front and rear ends respectively connected to the top of the elastic element 2, and a crossbeam 4 connected between the tops of the two side walls of the screen box 3 for mounting a box-type vibrator. To improve the rigidity and strength of the screen box 3, multiple reinforcing beams 6 are fixedly connected between the tops of the two side walls of the screen box 3.

[0047] The support beam 5 includes an octagonal tube 5.1 and end plates 5.2 located at both ends of the octagonal tube 5.1 and fixedly connected to the inner wall of the screen box 3; wherein, the octagonal tube 5.1 is cold-rolled from steel pipe. That is, the support beam 5 as a whole has good mechanical properties, thus making it well-suited for screen boxes 3 with large spans. The octagonal tube 5.1 and the end plates 5.2 are fixedly connected by welding. The end plates 5.2 are fixed to the two side walls of the screen box 3 using bolts.

[0048] The fixing clamps 10 are evenly clamped onto the octagonal tube 5.1 in the transverse direction; wherein, the fixing clamps 10 include a semi-ring clamp 10.1 that is clamped to the bottom of the octagonal tube 5.1, a semi-ring clamp 2 10.2 that is clamped to the top of the octagonal tube 5.1, a stitching bolt 10.3 for fixing the two ends of the semi-ring clamp 10.1 to the two ends of the semi-ring clamp 2 10.2 respectively, and a screw 10.4 that is fixed vertically to the top surface of the semi-ring clamp 2 10.2.

[0049] The support strip 11 includes a strip plate 11.1 extending longitudinally and fixedly connected at the bottom to the top of the fixing hoop 10, multiple collars 11.3 fixedly fitted on the strip plate 11.1, a vertical rod 11.4 slidably fitted within the collars 11.3, a spherical shell 11.5 fixed to the top of the vertical rod 11.4, a ball head 11.6 rotatably fitted within the spherical shell 11.5, and an internally threaded tube 11.7 fixed vertically to the top of the ball head 11.6. The bottom of the strip plate 11.1 is fixed with a groove 11.2 that engages with the top of the second semi-ring hoop 10.2, and the strip plate 11.1 has a through hole 11.1.1 that engages with the first screw 10.4. In order to enable the vertical rod 11.4 to move flexibly when it moves up and down, a base plate 11.8 is fixed to the bottom of the vertical rod 11.4, and a spring 11.9 is fitted on the vertical rod 11.4 between the top surface of the base plate 11.8 and the bottom surface of the strip plate 11.1.

[0050] The lower strip 12 is arranged parallel above the strip plate 11.1, and the lower strip 12 is provided with three through holes 12.1 at the positions corresponding to the internal threaded tube 11.7.

[0051] Multiple strip-shaped screens 7 extending vertically are arranged in a staggered pattern along the transverse direction to form the entire flexible screen surface structure. Perforations 7.1 corresponding to perforations 12.1 are provided on both sides of the strip-shaped screens 7.

[0052] Side beam 13 is fixed to the inner wall of screen box 3 and located below strip screen 7. A threaded hole 13.1 is provided on the top surface of side beam 13 corresponding to the position of through hole 7.1. Multiple side holes 3.1 are provided on both side walls of screen box 3 corresponding to the central axis of the side wall of side beam 13. A screw 13.2 matching the side hole 3.1 is fixed to the outer wall of side beam 13. The outer end of screw 13.2 passes through the side hole 3.1 and is threaded with a fastening nut 13.3. That is, the multiple screws 13.2 on the outer wall of side beam 13 are passed through the side holes 3.1 in sequence from the inside to the outside, and then the fastening nut 13.3 is fitted onto the outer end of screw 13.2 and tightened to firmly fix side beam 13 to the inner wall of screen box 3.

[0053] The connector 14 passes through through hole 7.1 and through hole 12.1 in sequence and then threadedly engages with the internally threaded tube 11.7. The connector 14 includes a screw 14.1 that is threadedly engaged with the internally threaded tube 11.7 and the threaded hole 13.1, and a short post 14.2 fixedly abutting the top of the screw 14.1. A hemisphere 14.3 is fixed to the top of the short post 14.2.

[0054] The top surface of the strip-shaped screen 7 at the overlapping section is provided with a pressure strip 9 whose bottom end is matched with the hemisphere 14.3. The bottom surface of the pressure strip 9 has a strip groove 9.1 along the axial direction that is matched with the short column 14.2 along the longitudinal direction. The pressure strip 9, located above the strip groove 9.1, has a semi-cylindrical cavity 9.2 along the axial direction that is matched with the hemisphere 14.3. The pressure strip 9 has an isosceles triangular cross section, which is snapped onto the top of the connector 14, and the bottom surface is pressed onto the corresponding strip-shaped screen 7. The top of the pressure strip 9 has a pointed structure, which can produce a vertical cutting effect on the screened material and easily divert the screened material to both sides onto the flexible screen surface.

[0055] The outer edges of the strip-shaped screen 7 located on both sides are respectively provided with side strips 8. The bottom surface of the side strip 8 has a strip groove 8.1 along the axial direction that matches the short column 14.2 in a longitudinal sliding engagement. The side strip 8 has a semi-cylindrical cavity 8.2 along the axial direction above the strip groove 8.1 that matches the hemisphere 14.3 in a sliding engagement engagement. The side strips 8 are used to improve the sealing between the flexible screen structure and the inner wall of the screen box 3, and to press and fix the two sides of the flexible screen structure.

[0056] The strip plate 11.1 is a rigid plate, the lower strip 12 is an elastic and bendable plate, and the strip-shaped screen 7, pressure strip 9 and edge strip 8 are respectively cast by polyurethane.

[0057] In summary, the support beam 5, fixing hoop 10, support strip 11, and lower edge strip 12 constitute the support structure of the flexible screen surface structure. Specifically, the bottom surface of the short column 14.2 presses the overlapping joint of the strip-shaped screen 7 onto the top surface of the lower edge strip 12, and the bottom surface of the lower edge strip 12 supports the top surface of the internally threaded pipe 11.7. This not only allows multiple strip-shaped screens 7 to be assembled and fixed into an integral screen surface structure, but also allows the vertical rod 11.4 to move up and down relative to the collar 11.3 when the screen box 3 vibrates, and the ball head 11.6 to rotate relative to the spherical shell 11.5. This enables the flexible screen surface structure to adapt to vibration and to be tightened and relaxed accordingly. The amplitude of the up-and-down vibration of the flexible screen surface structure is increased to a certain extent, which helps to improve the screening efficiency.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large tension screen with an octagonal tube support structure, comprising a support frame (1), an elastic element (2) mounted on the top of the support frame (1), a screen box (3) with its front and rear ends respectively connected to the top of the elastic element (2), and a crossbeam (4) connected between the tops of the two side walls of the screen box (3) for mounting a box-type vibrator, characterized in that, Also includes: Support beam (5), the support beam (5) includes an octagonal tube (5.1) and end plates (5.2) provided at both ends of the octagonal tube (5.1) and fixedly connected to the inner sidewall of the sieve box (3). The octagonal tube (5.1) is formed by cold rolling of steel pipe. A fixing hoop (10) is uniformly fitted onto the octagonal tube (5.1) in a transverse direction; The support strip (11) includes a strip plate (11.1) extending longitudinally and fixedly connected at the bottom to the top of the fixing hoop (10), a plurality of collars (11.3) fixedly fitted on the strip plate (11.1), a vertical rod (11.4) slidably fitted in the collars (11.3), a spherical shell (11.5) fixed to the top of the vertical rod (11.4), a ball head (11.6) rotatably fitted in the spherical shell (11.5), and an internally threaded tube (11.7) fixed vertically to the top of the ball head (11.6). The lower strip (12) is arranged parallel above the strip plate (11.1), and the lower strip (12) is provided with three through holes (12.1) at the positions corresponding to the internal threaded tube (11.7). A strip-shaped screen (7) is provided on both sides of the strip-shaped screen (7) in a staggered manner, with multiple strip-shaped screens (7) extending vertically and arranged horizontally. The two sides of the strip-shaped screen (7) are provided with perforations (7.1) corresponding to the perforations (12.1). The connector (14) passes through the first through hole (7.1) and the third through hole (12.1) in sequence and is threadedly connected to the internally threaded pipe (11.7); Side beam (13), the side beam (13) is fixed to the inner wall of the screen box (3) and located on the lower side of the strip screen (7). The top surface of the side beam (13) is provided with a threaded hole (13.1) that matches the bottom threaded connection of the connector (14) at the position of the through hole (7.1). The fixing hoop (10) includes a semi-circular hoop one (10.1) that engages with the bottom of the octagonal tube (5.1), a semi-circular hoop two (10.2) that engages with the top of the octagonal tube (5.1), a stitching bolt (10.3) for fixing the two ends of the semi-circular hoop one (10.1) to the two ends of the semi-circular hoop two (10.2) respectively, and a screw rod one (10.4) fixed vertically to the top surface of the semi-circular hoop two (10.2). The strip plate (11.1) The bottom is fixed with a slot (11.2) that matches the top of the semi-ring hoop (10.2). The strip plate (11.1) is provided with a through hole (11.1.1) that matches the screw (10.4). The bottom end of the vertical rod (11.4) is fixed with a base plate (11.8). A spring (11.9) is fitted on the vertical rod (11.4) at the position between the top surface of the base plate (11.8) and the bottom surface of the strip plate (11.1).

2. The large tension screen with an octagonal tube support structure according to claim 1, characterized in that: The connector (14) includes a screw three (14.1) that is threadedly fitted to the internal threaded tube (11.7) and the threaded hole (13.1) and a short post (14.2) that is fixedly abutted to the top of the screw three (14.1).

3. The large tension screen with an octagonal tube support structure according to claim 2, characterized in that: The top of the short column (14.2) is fixed with a hemisphere (14.3). The top surface of the strip screen (7) at the stub is provided with a pressure strip (9) whose bottom end is matched with the hemisphere (14.3). The bottom surface of the pressure strip (9) is provided with a strip groove (9.1) along the axial direction that is matched with the short column (14.2) along the longitudinal direction. The pressure strip (9) is provided with a semi-cylindrical cavity (9.2) along the axial direction at the position above the strip groove (9.1) that is matched with the hemisphere (14.3) along the axial direction.

4. The large tension screen with an octagonal tube support structure according to claim 3, characterized in that: The outer edge of the strip-shaped screen (7) located on both sides is provided with a side strip (8). The bottom surface of the side strip (8) is provided with a strip groove (8.1) that slides and matches the short column (14.2) in the longitudinal direction. The side strip (8) located on the upper side of the strip groove (8.1) is provided with a semi-cylindrical cavity (8.2) that slides and matches the hemisphere (14.3) in the axial direction.

5. The large tension screen with an octagonal tube support structure according to claim 1, characterized in that: The two side walls of the sieve box (3) are provided with multiple side holes (3.1) at the position of the middle axis of the side wall of the side beam (13). The outer side wall of the side beam (13) is fixed with a screw rod (13.2) that is matched with the side hole (3.1). The outer end of the screw rod (13.2) passes through the side hole (3.1) and is threaded with a fastening nut (13.3).

6. The large tension screen with an octagonal tube support structure according to claim 4, characterized in that: The strip plate (11.1) is a rigid plate, the lower strip (12) is an elastic bendable plate, and the strip-shaped screen (7), pressure strip (9) and edge strip (8) are respectively cast by polyurethane.

7. The large tension screen with an octagonal tube support structure according to claim 1, characterized in that: Multiple reinforcing beams (6) are fixedly connected between the top of the two side walls of the sieve box (3).

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