A modular large multi-layer tension screen

Abstract

This invention relates to the field of screening machinery technology, specifically a modular large-scale multi-layer tensioned screen. The fixed screening module includes a longitudinal screen mesh forming the screen surface, a strip support member and a rectangular tube located on the lower side of the screen surface, and an elongated hole four on the outer wall of the rectangular tube. The floating screening module includes a floating frame and a transverse screen mesh located within the floating frame, with elongated holes five on the longitudinal beams on both sides of the floating frame. The floating connection module includes a longitudinal support plate fixed to the outer wall of the main box, a transverse connector movably fitted onto the longitudinal support plate and the side wall of the main box, and a longitudinal rod passing through the outer end of the transverse connector. A longitudinal spring is fitted between the longitudinal rod and the outer end of the transverse connector. An elongated block is located at the inner end of the transverse connector. The side walls of the main box have an elongated hole one corresponding to the elongated hole four and an elongated hole two that fits and matches the elongated block. The support beam inside the main box is movably connected to the strip support member. This design facilitates efficient assembly of the large tensioned screen and improves screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of screening machinery technology, specifically a modular large-scale multi-layer tension screen. Background Technology

[0002] The tension screen first appeared in Germany in the 1950s. It is a new type of screening machinery developed from the traditional circular vibrating screen. It is suitable for screening difficult-to-screen materials with high viscosity and moisture content of 7% to 14% to a particle size of 1 to 13 mm. It is particularly effective for screening fine-particle raw coal. Currently, tension screens are gradually being widely used in the industrial field.

[0003] The tension screen is made of stretchable polyurethane rubber. During operation, the screen plate alternately tightens and relaxes, causing the material to be thrown onto the screen while moving forward. The acceleration of the thrown material can typically reach 30 to 50 times the acceleration due to gravity. The high vibration frequency results in high screening efficiency, large throughput, low power consumption, and low noise.

[0004] Traditionally, the main structure of a tension screen consists of screening components installed inside a screen box. The outside of the screen box is connected to a support frame via elastic elements. Driven by a motor and vibrator, the screen box and screening components move in an elliptical motion. To facilitate the forward movement of materials, the screen body is mostly designed as an inclined straight shape or a banana shape.

[0005] Currently, commonly used large-scale tension screens are generally characterized by complex structures and large size. During assembly, it is usually necessary to assemble each component of the screening assembly into the screen box sequentially, which makes it difficult to achieve efficient assembly work, and the screening efficiency is low during screening operations. Summary of the Invention

[0006] The purpose of this invention is to provide a modular large-scale multi-layer tension screen to solve the problems of inefficient assembly and low screening efficiency of existing large-scale tension screens.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a modular large multi-layer tension screen, comprising a main housing, wherein an excitation beam for installing an exciter and a reinforcing beam are fixed between the top ends of the two side walls of the main housing cavity; the fixed screening module includes multiple longitudinal screens with overlapping edges, a strip support fixed to the lower side of the overlapping edge of the longitudinal screens, and a rectangular tube fixed to the outer side of the bottom surface of the longitudinal screens on both sides; the rectangular tube has multiple elongated holes 4 in the middle of its outer wall along its axial direction; the floating screening module includes a floating frame, multiple transverse screens arranged longitudinally within the floating frame, and a pressure strip slidably mounted on the inner wall of the floating frame for pressing the edges of two adjacent transverse screens against the inner wall of the floating frame; multiple longitudinal beams are evenly arranged on both sides of the floating frame, and elongated holes 5 are provided in the middle of the side wall of the longitudinal beams; the floating connection module includes a longitudinal support plate fixed to the outer wall of the main housing near the bottom, and a movable sleeve fitted onto... The longitudinal support plate has multiple transverse connectors in the middle and longitudinal rods passing through the outer ends of the transverse connectors in sequence. The outer wall of the longitudinal support plate is fixed with support blocks that fit and match the longitudinal rods at the front and rear sides of the outer ends of the transverse connectors. The longitudinal rods are fitted with longitudinal springs at the parts between the support blocks and the outer ends of the transverse connectors. The inner end of the transverse connector is provided with an elongated block that fits and matches the elongated hole five. The inner end of the T-bolt fits and matches the elongated hole four. The top of the two side walls of the main housing are provided with two rows of elongated holes one corresponding to the elongated holes four. The nuts fitted on the outer ends of the T-bolts are pressed against the outer wall of the main housing. The two side walls of the main housing are provided with elongated holes two that fit and match the elongated blocks near the bottom. The inner wall of the main housing is provided with multiple support beams at the position below the elongated holes. The top surface of the support beams is movably connected to the bottom of the strip support.

[0008] Preferably, the longitudinal screen has multiple elongated holes 3 evenly provided along the longitudinal direction at both sides of its edge. The strip support includes a strip plate located below the overlap of the longitudinal screen, a threaded sleeve 1 vertically fitted at the top of the strip plate and corresponding to each of the elongated holes 3, a clamping bolt that passes through the elongated holes 3 and is threadedly fitted to the threaded sleeve 1, an ear seat fixed at the top on both sides of the center line of the bottom surface of the strip plate, a connecting plate hinged at the top to the ear seat, and a shaft rod fitted horizontally at the bottom of the connecting plate. The support beam includes a crossbeam fixed at both ends to the inner wall of the main box cavity and a connecting seat fixed at the top surface of the crossbeam and located directly below the strip plate. The rear part of the connecting seat is provided with a top groove and a side groove that are respectively engaged and matched with the bottom of the connecting plate and the shaft rod.

[0009] Preferably, a threaded sleeve two corresponding to the elongated hole three is fixedly fitted in the middle of the top surface of the rectangular tube, and the bottom of the clamping bolt fitted in the elongated hole three on the outer side of the longitudinal screen on both sides is threadedly matched with the threaded sleeve two.

[0010] Preferably, the top of the clamping bolt is integrally formed with a mushroom head, and triangular prism strips are respectively provided above the stubble of the longitudinal screen. Protective edges are respectively provided above the outer sides of the longitudinal screens on both sides. The protective edges and the middle part of the bottom surface of the triangular prism strips are respectively provided with grooves along the longitudinal direction to match the mushroom head.

[0011] Preferably, the floating frame further includes a plurality of U-shaped frames evenly arranged longitudinally, the front and rear ends of the longitudinal beam are respectively fixed to the bottom ends of two adjacent U-shaped frames, the bottom of the pressure strip is respectively slidably engaged in the middle of the inner cavity wall of the U-shaped frame, and the front and rear edges of the transverse screen are respectively supported on the inner cavity wall of the corresponding U-shaped frame.

[0012] Preferably, the pressure strip includes a T-shaped strip and a semi-cylindrical strip integrally formed at the top of the T-shaped strip at the center of the bottom surface. The inner cavity wall of the U-shaped frame is provided with T-shaped grooves that are slidably engaged with the T-shaped strip. The front and rear sides of the bottom surface of the semi-cylindrical strip are respectively pressed against the front and rear edges of the transverse screen.

[0013] Preferably, the transverse connector further includes a block and a round rod whose outer end is fixed to the middle of the inner wall of the block and whose inner end is fixed to the middle of the outer wall of the oblong block. A through hole is provided between the middle of the front and rear walls of the block to match the sliding sleeve of the longitudinal rod. The axis of the oblong block is perpendicular to the axis of the through hole. The longitudinal support plate is provided with an oblong hole extending longitudinally at the position corresponding to the round rod.

[0014] Preferably, a transverse spring is fitted onto the portion of the round rod located on the inner side of the inner wall of the main housing.

[0015] Preferably, the longitudinal support plate is provided with through holes on both sides above and below the elongated hole six, and the two side walls of the main housing are provided with threaded holes corresponding to the positions of the through holes. The inner end of the bolt fitted in the through hole is threadedly matched with the threaded hole.

[0016] Preferably, the inner sidewall of the main housing is fixed with side strips extending in the horizontal direction at positions corresponding to the top surfaces of both ends of the floating frame.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention relates to a modular large multi-layer tension screen in which the fixed screening module, floating screening module and floating connection module are convenient for modular assembly, which greatly improves the assembly efficiency of the large multi-layer tension screen.

[0019] 2. The present invention relates to a modular large multi-layer tension screen in which the bottom of the fixed screening module is movably connected to the support beam, so that the screen surface of the fixed screening module can be easily tensioned by the vibrator. Furthermore, a floating screening module is provided under the two-stage fixed screening module, which further improves the screening efficiency of the large tension screen. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the main housing of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the supporting beam of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the fixed screening module of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the longitudinal screen of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the strip support member of the present invention;

[0026] Figure 7 This is a three-dimensional structural diagram of the rectangular tube of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the edge protector of the present invention;

[0028] Figure 9 This is a three-dimensional structural diagram of the triangular prism strip of the present invention;

[0029] Figure 10 This is a three-dimensional structural diagram of the floating screening module of the present invention;

[0030] Figure 11 This is a three-dimensional structural diagram of the floating frame of the present invention;

[0031] Figure 12 This is a three-dimensional structural diagram of the pressure strip of the present invention;

[0032] Figure 13 This is a three-dimensional structural diagram of the floating connection module of the present invention;

[0033] Figure 14 This is a three-dimensional structural diagram of the transverse connecting member of the present invention.

[0034] In the diagram: 1-Main housing; 1.1-Vibration beam; 1.2-Support beam; 1.2.1-Crossbeam; 1.2.2-Connecting seat; 1.2.2.1-Top groove; 1.2.2.2-Side groove; 1.3-Oblong hole one; 1.4-Oblong hole two; 1.5-Threaded hole; 1.6-Side strip; 1.7-Reinforcing beam;

[0035] 2-Fixed screening module; 2.1-Longitudinal screen; 2.1.1-Oblong hole three; 2.2-Strip support; 2.2.1-Strip plate; 2.2.2-Threaded sleeve one; 2.2.3-Ear seat; 2.2.4-Connecting plate; 2.2.5-Shaft; 2.2.6-Clamping bolt; 2.2.7-Mushroom head; 2.3-Rectangular tube; 2.3.1-Threaded sleeve two; 2.3.2-Oblong hole four; 2.4-Edge protector; 2.5-Triangular prism strip;

[0036] 3-Floating screening module; 3.1-Floating frame; 3.1.1-U-shaped frame; 3.1.1.1-T-shaped chute; 3.1.2-Longitudinal beam; 3.1.2.1-Oblong hole five; 3.2-Transverse screen; 3.3-Pressure strip; 3.3.1-T-shaped strip; 3.3.2-Semi-cylindrical strip;

[0037] 4-T bolts;

[0038] 5-Floating connection module; 5.1-Longitudinal support plate; 5.1.1-Oblong hole six; 5.1.2-Support block; 5.1.3-Through hole; 5.2-Transverse connector; 5.2.1-Block; 5.2.1.1-Through hole; 5.2.2-Round rod; 5.2.3-Oblong block; 5.2.4-Transverse spring; 5.3-Longitudinal rod; 5.4-Longitudinal spring. Detailed Implementation

[0039] 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.

[0040] Please see Figure 1-14This invention provides a technical solution: a modular large-scale multi-layer tension screen, comprising a main housing 1. An excitation beam 1.1 for mounting an exciter and a reinforcing beam 1.7 are fixed between the top ends of the two side walls of the main housing 1. Two rows of elongated holes 1.3 are longitudinally arranged on the top ends of the two side walls of the main housing 1, and a row of elongated holes 1.4 are longitudinally arranged near the bottom of the two side walls of the main housing 1. Threaded holes 1.5 are provided on both sides above and below the elongated holes 1.4. Multiple support beams 1.2 are provided on the inner side walls of the main housing 1 corresponding to the lower side of the elongated holes 1.3. Each support beam 1.2 includes a crossbeam 1.2.1 fixed at both ends to the inner side walls of the main housing 1, and multiple connecting seats 1.2.2 uniformly fixed to the top surface of the crossbeam 1.2.1. The rear top surface center and side wall of the connecting seat 1.2.2 are respectively provided with a top groove 1.2.2.1 and a side groove 1.2.2.2.

[0041] The fixed screening module 2 includes multiple longitudinal screens 2.1 with overlapping edges on both sides, a strip support 2.2 fixed to the lower side of the overlapping area of ​​the longitudinal screens 2.1, and a rectangular tube 2.3 fixed to the outer side of the bottom surface of the longitudinal screens 2.1 on both sides. The rectangular tube 2.3 has multiple elongated holes 2.3.2 along its axial direction in the middle of its outer wall. The multiple longitudinal screens 2.1 are connected in an overlapping manner to form a fixed screen surface. Multiple elongated holes 2.1.1 are evenly distributed longitudinally on both sides of the longitudinal screens 2.1. The strip support 2.2 includes a strip plate 2.2.1 located below the overlapping area of ​​the longitudinal screens 2.1, a threaded sleeve 2.2.2 vertically fitted at the top of the strip plate 2.2.1 and corresponding one-to-one with the elongated holes 2.1.1, a clamping bolt 2.2.6 passing through the elongated holes 2.1.1 and threadedly engaged with the threaded sleeve 2.2.2, and a top-fixed... The strip support 2.2.1 has ear seats 2.2.3 on both sides of the center line of the bottom surface, a connecting plate 2.2.4 hinged to the ear seats 2.2.3 at the top, and a shaft 2.2.5 horizontally fitted to the bottom of the connecting plate 2.2.4 in the middle. The bottom of the connecting plate 2.2.4 is slidably engaged with the top groove 1.2.2.1, and the two ends of the shaft 2.2.5 are slidably engaged with the side groove 1.2.2.2, so as to realize the movable connection between the bottom of the strip support 2.2 and the support beam 1.2. The rectangular tube 2.3 has a threaded sleeve 2.3.1 fixedly fitted in the middle of the top surface, which corresponds one-to-one with the oblong hole 2.1.1. The bottom of the clamping bolt 2.2.6 fitted in the oblong hole 2.1.1 outside the longitudinal screen 2.1 on both sides is threadedly engaged with the threaded sleeve 2.3.1. By tightening bolts 2.2.6, the edges of the longitudinal screen 2.1 are respectively pressed and fixed to the top surfaces of the strip plate 2.2.1 and the rectangular tube 2.3 to achieve rapid assembly of the fixed screening module 2.

[0042] When installing the assembled fixed screening module 2 into the inner cavity of the main housing 1, first insert the assembled fixed screening module 2 into the inner cavity of the main housing 1 from the front, ensuring that the fixed screening module 2 is positioned above the corresponding support beam 1.2. Once the rear end of the fixed screening module 2 abuts against the rear wall of the inner cavity of the main housing 1, then respectively insert the bottom of the connecting plate 2.2.4 and the shaft 2.2.5 into the top groove 1.2.2.1 and the side groove 1.2.2.2. The strip plate 2.2.1 is made of elastic material, possessing bendability while ensuring a certain degree of toughness. After connecting the strip support 2.2 to the support beam 1.2, fine-tune the fixed screening module 2 to align the oblong holes 2.3.2 and 1.3. Then install the T-bolts 4. First, insert the ends of the T-bolts 4 into the inner cavity of the rectangular tube 2.3 through the oblong holes 1.3 and 2.3.2. Then rotate the T-bolts 4 by 90° and fit the nuts on the screws of the T-bolts 4. Tighten the nuts to complete the assembly of the fixed screening module 2. Alternatively, this tension screen has two layers of fixed screening modules 2, which can be assembled and connected to the main body 1 layer by layer by installing the upper layer first and then the lower layer.

[0043] The top of the clamping bolt 2.2.6 is integrally formed with a mushroom head 2.2.7. Triangular prism strips 2.5 are respectively provided above the overlapping area of ​​the longitudinal screen 2.1. Protective edges 2.4 are respectively provided above the outer sides of the longitudinal screens 2.1 on both sides. The bottom surfaces of the protective edges 2.4 and the triangular prism strips 2.5 are respectively provided with longitudinally aligned grooves that match the mushroom head 2.2.7. The protective edges 2.4 are designed to prevent gaps and material leakage between the fixed screening module 2 and the inner wall of the main housing 1 during material screening. The triangular prism strips 2.5 and the protective edges 2.4 also seal and protect the edges of the longitudinal screen 2.1, not only preventing material leakage but also increasing the service life of the longitudinal screen 2.1. In addition, the triangular prism strips 2.5 have an isosceles triangular cross-section, which also provides vertical cutting and separating effects during screening, reducing the impact of blind spots at the overlapping area of ​​the longitudinal screen 2.1 on screening efficiency.

[0044] The floating screening module 3 includes a floating frame 3.1, multiple transverse screens 3.2 arranged longitudinally within the floating frame 3.1, and a pressure strip 3.3 that slides and is fastened to the inner wall of the floating frame 3.1 to press the edges of two adjacent transverse screens 3.2 against the inner wall of the floating frame 3.1. Multiple longitudinal beams 3.1.2 are evenly arranged longitudinally on both sides of the floating frame 3.1. An elongated hole 3.1.2.1 is provided in the middle of the side wall of each longitudinal beam 3.1.2. The pressure strip 3.3 facilitates the quick and easy fixing of the transverse screens 3.2 onto the floating frame 3.1, enabling rapid assembly of the floating screening module 3.

[0045] The floating frame 3.1 further includes multiple U-shaped frames 3.1.1 evenly arranged longitudinally. The front and rear ends of the longitudinal beam 3.1.2 are fixed to the bottom ends of two adjacent U-shaped frames 3.1.1. The bottom of the pressure strip 3.3 is slidably engaged with the middle of the inner wall of the U-shaped frame 3.1.1. The front and rear edges of the transverse screen 3.2 are supported on the inner wall of the corresponding U-shaped frame 3.1.1. Specifically, the pressure strip 3.3 includes a T-shaped strip 3.3.1 and a semi-cylindrical strip 3.3.2 integrally formed at the top of the T-shaped strip 3.3.1. The inner wall of the U-shaped frame 3.1.1 is provided with T-shaped grooves 3.1.1.1 that are slidably engaged with the T-shaped strip 3.3.1. The front and rear sides of the bottom of the semi-cylindrical strip 3.3.2 are pressed against the front and rear edges of the transverse screen 3.2. The pressure strip 3.3 has a certain degree of flexibility so that it can be smoothly inserted into the T-shaped groove 3.1.1.1.

[0046] The floating connection module 5 includes a longitudinal support plate 5.1, a transverse connector 5.2, and a longitudinal rod 5.3. The longitudinal support plate 5.1 has an oblong hole 5.1.1 corresponding to the oblong hole 1.4. The oblong holes 1.4, 3.1.2.1, and 5.1.1 extend longitudinally. Through holes 5.1.3 are located above and below the oblong hole 5.1.1 on both sides of the longitudinal support plate 5.1.3. Bolts fitted into the through holes 5.1.3 are threadedly fitted into the threaded holes 1.5 to facilitate rapid assembly of the longitudinal support plate 5.1 with the outer wall of the main housing 1. Support blocks 5.1.2 are fixed to the outer wall of the longitudinal support plate 5.1 at the front and rear sides of the oblong hole 5.1.1. The transverse connecting block 5.2 includes a block body 5.2.1, a round rod 5.2.2 whose outer end is fixed to the middle of the inner wall of the block body 5.2.1, and an oblong block 5.2.3 whose outer wall is fixed to the inner end of the round rod 5.2.2. A through hole 5.2.1.1 is provided between the middle of the front and rear walls of the block body 5.2.1 to slide and fit with the longitudinal rod 5.3. The axis of the oblong block 5.2.3 is perpendicular to the axis of the through hole 5.2.1.1. A transverse spring 5.2.4 is fitted onto the inner side of the inner wall of the round rod 5.2.2. The transverse spring 5.2.4 has an oblong cross-section, which is the same size as the outer contour of the oblong block 5.2.3, so that the transverse spring 5.2.4 can pass through the oblong hole 5.1.1 and the oblong hole 1.4.

[0047] The oblong block 5.2.3 passes through oblong hole six 5.1.1, oblong hole two 1.4 and oblong hole five 3.1.2.1 in sequence. Then, the transverse connector 5.2 is rotated 90° as a whole, so that the outer wall of the oblong block 5.2.3 fits against the inner wall of the longitudinal beam 3.1.2. The length direction of the cross section of the transverse spring 5.2.4 is perpendicular to the length direction of oblong hole two 1.4 and oblong hole five 3.1.2.1, so that the two ends of the transverse spring 5.2.4 are respectively supported on the outer wall of the longitudinal beam 3.1.2 and the inner wall of the main box 1.

[0048] After the transverse connector 5.2 rotates 90°, the through hole 5.2.1.1 on block 5.2.1 aligns with the sleeve hole on support block 5.1.2. At this point, the longitudinal rod 5.3 is passed through the sleeve hole and the through hole 5.2.1.1 in sequence. A longitudinal spring 5.4 is fitted onto the portion of the longitudinal rod 5.3 located between support block 5.1.2 and block 5.2.1. One end of the longitudinal rod 5.3 has an integrally formed limit end, and the other end is fitted with a radial pin. Following these steps, the floating screening module 3 can be quickly assembled with the main housing 1, giving the floating screening module 3 both longitudinal and transverse floating capabilities.

[0049] To prevent material leakage from both sides of the floating screening module 3 during lateral movement, side strips 1.6 extending horizontally are fixed to the inner wall of the main housing 1 at positions corresponding to the top surfaces of both ends of the floating frame 3.1. The side strips 1.6 are used to seal the gaps formed between the sides of the floating screening module 3 and the inner wall of the main housing 1 to prevent material leakage.

[0050] 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.

[0051] 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 modular large-scale multi-layer tensioning screen, comprising a main box (1), a vibration excitation beam (1.1) for mounting a vibration exciter and a reinforcing beam (1.7) are fixed between the top ends of the two side walls of the inner cavity of the main box (1), characterized in that, Also includes: A fixed screening module (2) includes multiple longitudinal screens (2.1) with overlapping edges on both sides, a strip support (2.2) fixed to the lower side of the overlapping edge of the longitudinal screens (2.1), and a rectangular tube (2.3) fixed to the outer side of the bottom surface of the longitudinal screens (2.1) on both sides. The rectangular tube (2.3) has multiple elongated holes (2.3.2) along its axial direction in the middle of the outer wall of its outer side. A floating screening module (3) includes a floating frame (3.1), a plurality of transverse screens (3.2) arranged longitudinally within the floating frame (3.1), and a pressure strip (3.3) that is slidably mounted on the inner wall of the floating frame (3.1) and used to press the edges of two adjacent transverse screens (3.2) against the inner wall of the floating frame (3.1). A plurality of longitudinal beams (3.1.2) are evenly arranged on both sides of the floating frame (3.1) along the longitudinal direction. An elongated hole (3.1.2.1) is provided in the middle of the side wall of the longitudinal beam (3.1.2). A floating connection module (5) includes a longitudinal support plate (5.1) fixed to the outer side wall of the main body (1) near the bottom, multiple transverse connectors (5.2) movably fitted in the middle of the longitudinal support plate (5.1), and longitudinal rods (5.3) passing through the outer ends of the multiple transverse connectors (5.2) in sequence. Support blocks (5.1.2) that fit and match the longitudinal rods (5.3) are fixed at the front and rear sides of the outer ends of the transverse connectors (5.2) on the outer side wall of the longitudinal support plate (5.1). Longitudinal springs (5.4) are fitted at the part of the longitudinal rods (5.3) between the support blocks (5.1.2) and the outer ends of the transverse connectors (5.2). An elongated block (5.2.3) that fits and matches the elongated hole five (3.1.2.1) is provided at the inner end of the transverse connector (5.2). T-bolt (4), the inner end of which is fitted into the elongated hole four (2.3.2); The top of the two side walls of the main housing (1) are provided with two rows of elongated holes (1.3) corresponding to the elongated holes (2.3.2) in the longitudinal direction. The nuts fitted on the outer ends of the T-bolts (4) are pressed against the outer wall of the main housing (1). The two side walls of the main housing (1) are provided with elongated holes (1.4) that fit and match the elongated blocks (5.2.3) near the bottom. The inner side wall of the main housing (1) is provided with multiple support beams (1.2) at the position below the elongated holes (1.3). The top surface of the support beams (1.2) is movably connected to the bottom of the strip support (2.2).

2. A modular large multi-deck tension-sieve according to claim 1, characterized in that: The longitudinal screen (2.1) is provided with a plurality of long-hole threes (2.1.1) at both side edges of the longitudinal screen (2.1) along the longitudinal direction, the strip-shaped support (2.2) comprises a strip-shaped plate (2.2.1) at the lower side of the longitudinal screen (2.1), a threaded sleeve one (2.2.2) vertically sleeved at the middle part of the strip-shaped plate (2.2.1) and corresponding to the long-hole three (2.1.1), a compression bolt (2.2.6) passing through the long-hole three (2.1.1) and threadedly connected with the threaded sleeve one (2.2.2), an ear seat (2.2.3) fixed at the bottom surface of the strip-shaped plate (2.2.1), a connecting plate (2.2.4) hingedly connected to the ear seat (2.2.3), and a shaft rod (2.2.5) horizontally sleeved at the bottom end of the connecting plate (2.2.4), the support beam (1.2) comprises a horizontal beam (1.2.1) fixed at both ends of the inner cavity side wall of the main box body (1) and a connecting seat (1.2.2) fixed at the top surface of the horizontal beam (1.2.1) and below the strip-shaped plate (2.2.1), and the connecting seat (1.2.2) is provided with a top groove (1.2.2.1) and a side groove (1.2.2.2) corresponding to the bottom of the connecting plate (2.2.4) and the shaft rod (2.2.5).

3. A modular large multi-deck tension-sieve according to claim 2, characterized in that: The rectangular tube (2.3) is provided with a threaded sleeve two (2.3.1) corresponding to the long-hole three (2.1.1) at the middle part of the top surface of the rectangular tube (2.3), and the compression bolt (2.2.6) sleeved in the long-hole three (2.1.1) at the outer side of the longitudinal screen (2.1) is threadedly connected with the threaded sleeve two (2.3.1).

4. A modular large multi-deck tension-sieve according to claim 3, characterized in that: The compression bolt (2.2.6) is integrally formed with a mushroom head (2.2.7) at the top end, the longitudinal screen (2.1) is provided with a triangular strip (2.5) above the compression stub, the outer side of the longitudinal screen (2.1) is provided with a guard (2.4) above the triangular strip (2.5), and the guard (2.4) is provided with a clamping groove corresponding to the mushroom head (2.2.7) along the longitudinal direction.

5. A modular large multi-deck tension-sieve according to claim 1, characterized in that: The floating frame (3.1) further comprises a plurality of U-shaped frames (3.1.1) arranged along the longitudinal direction, the front and rear ends of the longitudinal beam (3.1.2) are fixed to the bottom of the two adjacent U-shaped frames (3.1.1), the bottom of the pressing strip (3.3) is slidingly connected to the middle part of the inner cavity wall of the U-shaped frame (3.1.1), and the front and rear side edges of the transverse screen (3.2) are supported on the inner cavity wall of the corresponding U-shaped frame (3.1.1). The pressing strip (3.3) comprises a T-shaped strip (3.3.1) and a semicircular column strip (3.3.2) integrally formed at the top end of the T-shaped strip (3.3.1), and the inner cavity wall of the U-shaped frame (3.1.1) is provided with a T-shaped sliding groove (3.1.1.1) corresponding to the T-shaped strip (3.3.1).

6. A modular large multi-deck tension-sieve according to claim 5, characterized in that: ​ 3.1.1.1), the bottom surface of the semi-cylindrical bar (3.3.2) is pressed against the front and rear edges of the transverse screen (3.2) respectively.

7. A modular large scale multi-deck tension-sieve according to claim 1, characterized in that: The transverse connecting piece (5.2) further comprises a block (5.2.1) and a round rod (5.2.2) fixed at the middle part of the inner side wall of the block (5.2.1) and the outer side wall of the long circular block (5.2.3), the middle part of the front and rear walls of the block (5.2.1) is provided with a through hole (5.2.1.1) matched with the sliding sleeve of the longitudinal rod (5.3), 5.2.1.1), the axis of the long circular block (5.2.3) is perpendicular to the axis of the through hole (5.2.1.1), and the longitudinal support plate (5.1) is provided with a long circular hole (5.1.1) extending in the longitudinal direction corresponding to the position of the round rod (5.2.2). The round rod (5.2.2) is sleeved with a transverse spring (5.2.4) at the position inside the inner side wall of the main box (1).

8. A modular large multi-deck tension-sieve according to claim 7, characterized in that: The longitudinal support plate (5.1) is provided with a through hole (5.1.3) at the position on both sides of the long circular hole (5.1.1), the main box (1) is provided with a threaded hole (1.5) corresponding to the position of the through hole (5.1.3) at the two side walls, and the inner end of the bolt sleeved in the through hole (5.1.3) is matched with the threaded sleeve of the threaded hole (1.5).

9. A modular large multi-deck tension-sieve according to claim 8, characterized in that: The inner side wall of the main box (1) is provided with a side plate (1.6) extending in the horizontal direction corresponding to the position of the top surface of the floating frame (3.1) at both ends.

10. A modular large multi-deck tension-sieve according to claim 8, characterized in that: ​

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