Apparatus, method and system for vibratory screening

Abstract

The disclosed embodiments include a removable support structure (414, 424, 1706, 1902a, 1902b, 2320a, 2320b, 2402, 2502, 2602) for a vibrating screening machine (100). The removable support structure is a single structure including one or more of plastic, metal, and composite materials, and can be configured to provide mechanical support to one or more screening components (409, 419, 1702, 1802, 2008, 2206, 2220) of the vibrating screening machine. The removable support structure can also be configured to be removably fastened to the vibrating screening machine. The removable support structure can be a single thermoplastic injection molded part, or can be a single injection molded part including nylon, carbon, and graphite. The removable support structure may have a concave shape configured to mechanically support a screening assembly held under compression, or may have a convex shape configured to mechanically support a screening assembly held under tension. The disclosed wear protection cover (2502) made of a flexible material provides wear protection for the removable support structure.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS:

[0002] This application claims priority to U.S. Patent Application No. 16 / 460,496, filed on July 2, 2019, which is a continuation-in-part of U.S. Patent Application No. 15 / 785,141, which is related to and claims the benefit of U.S. Provisional Patent Application No. 62 / 408,514, filed on October 14, 2016, and U.S. Provisional Patent Application No. 62 / 488,293, filed on April 21, 2017. The disclosure of each of these applications is incorporated herein by reference in its entirety. BRIEF DESCRIPTION OF THE DRAWINGS

[0003] Figure 1 is a perspective side view of a vibrating screening machine according to one or more embodiments of the present invention.

[0004] Figure 2 According to one or more embodiments of the present invention Figure 1 A perspective top view of a vibrating screening machine is shown.

[0005] Figure 3 According to one or more embodiments of the present invention Figure 1 and 2 Front view of the vibrating screening machine shown.

[0006] Figure 4 According to one or more embodiments of the present invention Figure 1 , 2 3 and 3 are rear views of the vibrating screening machine.

[0007] Figure 5 is an isometric view of a screen panel assembly with a screen assembly mounted thereon in accordance with one or more embodiments of the present invention.

[0008] Figure 6 According to one or more embodiments of the present invention Figure 5 An enlarged isometric view of a portion of a screen assembly shown without a screen assembly mounted thereon, the screen assembly being coupled to Figure 1 , 2 , 3 and 4 shown in the vibrating screening machine.

[0009] Figure 7 is an enlarged side view of a wash tray according to one or more embodiments of the present invention, which wash tray may be incorporated into Figure 5 and 6 In the frit assembly shown.

[0010] Figure 8 is an isometric view of a tensioner having a ratchet mechanism according to one or more embodiments of the present invention.

[0011] Fig.9A According to one or more embodiments of the present invention, Figure 8 The ratchet mechanism shown Figure 5 , 6 7 and a side view of the screen plate assembly shown in FIG.

[0012] Fig. 9B According to one or more embodiments of the present invention Fig.9A An enlarged view of the ratchet mechanism is shown.

[0013] Fig.10 According to one or more embodiments of the present invention, Figure 5 , 6 The feed assembly and the screen assembly shown in 7 are fixed to Figure 1 , 2 , 3 and 4 are enlarged isometric views of the parts on the vibrating screening machine.

[0014] Fig.11A is an isometric bottom view of an undersized material discharge assembly according to one or more embodiments of the present invention.

[0015] Fig. 11B According to one or more embodiments of the present invention Fig.11A An isometric top view of a small scale material discharge assembly is shown.

[0016] Fig. 12A is an isometric bottom view of an oversized material discharge chute according to one or more embodiments of the present invention.

[0017] Fig. 12B According to one or more embodiments of the present invention Fig. 12A Isometric top view of the oversized material discharge chute shown in .

[0018] Fig.13A is an isometric top view of an oversized material discharge chute in accordance with one or more embodiments of the present invention.

[0019] Fig. 13B According to one or more embodiments of the present invention Fig.13A Isometric bottom view of an oversized material discharge chute shown.

[0020] Fig.14 is a cross-sectional side view of a frit panel assembly with material flowing through the frit panel assembly and an impact zone of a screen assembly incorporated into the frit panel assembly in accordance with one or more embodiments of the present invention.

[0021] Fig.15is a side view of a tray showing material to be filtered falling onto an impact zone of a filter element according to one or more embodiments of the present invention.

[0022] Fig.16A is a front perspective view of a screen assembly according to one or more embodiments of the present invention.

[0023] Fig. 16B is a side view of a screen filter according to one or more embodiments of the present invention.

[0024] Fig.17 is an isometric view of a screen panel assembly with a screen assembly mounted thereon in accordance with one or more embodiments of the present invention.

[0025] Fig.18 A perspective view of a vibratory screening machine is shown with a replaceable screen assembly having a dual concave screening area installed in accordance with an exemplary embodiment of the present invention.

[0026] Fig.19 A perspective view of a partially assembled vibratory screening machine is shown in accordance with an exemplary embodiment of the present invention.

[0027] Fig. 20 A perspective view of a vibratory screening machine installed with a replaceable screen assembly having a single concave screening area is shown in accordance with an exemplary embodiment of the present invention.

[0028] Fig.21A A perspective view of a partially assembled vibratory screening machine is shown in accordance with an exemplary embodiment of the present invention.

[0029] Fig.21B The exemplary embodiment according to the present invention is shown Fig.21A An enlarged view of the stringer and one of the plurality of ribs shown in FIG.

[0030] Fig. 22 A perspective view of a vibratory screening machine according to an exemplary embodiment of the present invention is shown, the vibratory screening machine being equipped with a replaceable screen assembly and a pre-screen assembly.

[0031] Fig.23 An exemplary embodiment of the present invention is shown. Fig. 22 Vibratory screening machine shown without feeder and screen assembly installed.

[0032] Fig.24 A portion of a vibratory screening machine having a replaceable support structure with a wear shield is shown according to an exemplary embodiment of the present invention.

[0033] Fig.25A portion of a vibratory screening machine having a replaceable support structure with wear shields is shown with one of the wear shields removed according to an exemplary embodiment of the invention.

[0034] Fig.26 is a portion of a vibrating screening machine having a replaceable support structure with wear guards, wherein one of the wear guards has been removed to expose the uncovered support structure, according to an exemplary embodiment of the present invention.

[0035] Fig. 27 The exemplary embodiment according to the present invention is shown Fig.26 An enlarged view of the uncovered support structure is shown in FIG.

[0036] Fig.28 A top perspective view of an uncovered insulation stringer is shown according to an exemplary embodiment of the present invention.

[0037] Fig.29 A side perspective view of an uncovered insulation stringer having a convex shape is shown according to an exemplary embodiment of the present disclosure.

[0038] Fig.30 A bottom perspective view of an uncovered insulation stringer having a convex shape is shown according to an exemplary embodiment of the present disclosure.

[0039] Fig.31 A top perspective view of a wear protection cover for a stringer according to an exemplary embodiment of the present invention is shown.

[0040] Fig.32 A side perspective view of a wear resistant cover for a stringer according to an exemplary embodiment of the present invention is shown.

[0041] Fig.33 A bottom perspective view of a wear resistant cover for a stringer according to an exemplary embodiment of the present invention is shown.

[0042] Fig.34 A side perspective view of an uncovered insulation rail having a concave shape is shown according to an exemplary embodiment of the present disclosure.

[0043] Fig.35 A bottom perspective view of an uncovered insulation stringer having a concave shape is shown according to an exemplary embodiment of the present disclosure.

[0044] Fig.36 A side perspective view of an uncovered insulating stringer having a straight shape is shown according to an exemplary embodiment of the present invention.

[0045] Fig.37A bottom perspective view of an uncovered insulation stringer having a straight shape is shown according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0046] The disclosed embodiments generally relate to methods and apparatus for screening materials and for separating materials of different sizes. The disclosed embodiments include screening systems, vibrating screening machines, and apparatus for vibrating screening machines and screen assemblies for separating materials of different sizes.

[0047] Vibratory screening systems are disclosed, for example, in U.S. Pat. Nos. 6,431,366 B2 and 6,820,748 B2, which are incorporated herein by reference. Advantages over previous systems include greater screening capacity for separating materials without an associated increase in machine size. Embodiments include improved features, such as: a screen plate assembly having a first screen and a second screen; a tensioning device that tensions each screen in a fore-and-aft direction (i.e., in the direction of flow of the material being screened); a wash tray located between the first screen and the second screen; a feed chute that is configured to be directly connected to a feed system mounted above (e.g., a feed system described in U.S. Pat. No. 9,18,008, which is incorporated herein by reference); a centralized discharge assembly that collects undersized and oversized material; a replaceable screen assembly that is configured for fore-and-aft tensioning and an impact zone to allow material to flow onto the screen assembly.

[0048] These features, as well as other features described herein, provide a compact design configured to receive material from a direct overhead feed system with increased screening capacity and reduced footprint. Additionally, the disclosed multiple screen assemblies tensioned front to back provide improved flow characteristics and efficiency with wash trays and impingement zones on the screen assemblies between the screen assemblies. The improved tensioning structure provides for quick and easy replacement of the screen assemblies. The improved discharge assembly is configured for optimal or near optimal flow characteristics and provides a greatly reduced footprint.

[0049] Disclosed embodiments include a vibrating screening machine configured to separate materials of different sizes. In some embodiments, the vibrating screening machine includes a frame assembly, a plurality of sieve plate assemblies mounted to the frame assembly, a small-size material discharge assembly, and a large-size material discharge assembly. The frame assembly includes an inner frame mounted to an outer frame. A plurality of sieve plate assemblies are mounted to the inner frame and arranged in a stacked and staggered relationship. Each sieve plate assembly includes a first sieve plate assembly, a second sieve plate assembly, a washing tower tray extending between the first sieve plate assembly and the second sieve plate assembly, and a tensioning assembly. A vibration motor can be attached to the inner frame and / or the sieve plate assembly. The small-size material discharge assembly and the large-size material discharge assembly, each of which can include at least one vibration motor, can be configured to be communicated with each sieve plate assembly, and can be configured to receive small-size and large-size screening materials from the sieve plate assembly, respectively.

[0050] In one embodiment, a vibrating screening machine includes an outer frame, an inner frame connected to the outer frame, and a vibrating motor assembly fixed to the inner frame for vibrating the inner frame. A plurality of screen plate assemblies are attached to the inner frame in a stacked arrangement, and each screen plate assembly is configured to accommodate a replaceable screen assembly. The screen assembly is fixed to the screen plate assembly by tensioning the screen assembly in the direction in which the material to be screened flows through the screen assembly. An undersized material discharge assembly is configured to accommodate material passing through the screen assembly, and an oversized material discharge assembly is configured to accommodate material passing over the top surface of the screen assembly. The undersized material discharge assembly includes an undersized chute assembly communicating with each screen plate assembly, and the oversized material discharge assembly includes an oversized chute assembly communicating with each screen plate assembly.

[0051] The oversized chute assembly may include a first oversized chute assembly and a second oversized chute assembly. The undersized chute assembly, the first oversized chute assembly and the second oversized chute assembly may be located below a plurality of screen plate assemblies, and the undersized chute assembly may be located between the first oversized chute assembly and the second oversized chute assembly. At least one of the plurality of screen plate assemblies may be replaceable. Each screen plate assembly may include a first screen assembly and a second screen assembly. The wash tray may be located between the first screen assembly and the second screen assembly. The trough may be located between the first screen assembly and the second screen assembly. The trough may include a curved weir structure.

[0052] The vibrating screening machine may include a screen tensioning system including a tensioning rod extending in a direction generally perpendicular to the direction of flow of the screened material. The tensioning rod may be configured to engage a portion of the screen assembly and tension the screen assembly when rotated. The screen tensioning system may include a ratchet assembly configured to rotate the tensioning rod so that it moves between a first open screen assembly receiving position to a second closed and fixed screen assembly tensioning position.

[0053] The vibrating screening machine may include a vibrating motor connected to an oversized chute assembly. The vibrating screening machine may include a plurality of feed assembly units, each feed assembly unit being substantially located directly below each discharge channel of the diverter. The vibrating screening machine may include at least 8 screen deck assemblies. Other embodiments may include a greater or lesser number of screen deck assemblies.

[0054] The oversized chute assembly may include a bifurcated trough for accommodating material that does not pass through the screen plate assembly and is conveyed on the discharge end of the screen plate assembly. A first portion of the bifurcated trough may feed a first oversized chute assembly and a second portion of the bifurcated trough may feed a second oversized chute assembly.

[0055] In one embodiment, the screen plate assembly includes a first screen plate assembly and a second screen plate assembly, wherein the first screen plate assembly is used to accommodate the first screen plate assembly, and the second screen plate assembly is used to accommodate the second screen plate assembly located downstream of the first screen plate assembly; and a groove, which is located between the first screen plate assembly and the second screen plate assembly, wherein the first screen plate assembly is used to accommodate the material to be screened, and the groove is configured to collect the material to be screened before the material to be screened reaches the second screen plate assembly.

[0056] The trough may include at least one of a curved weir and a wash tray. The screen deck assembly may include a first screen tensioning system and a second screen tensioning system, each screen tensioning system having a tensioning rod extending in a direction generally perpendicular to a flow direction of the material to be screened. The first tensioning rod may be configured to engage a first portion of the first screen assembly when rotated, and the second tensioning rod may be configured to engage a second portion of the second screen assembly when rotated.

[0057] The first screen tensioning system may include a first ratchet assembly configured to rotate a first tensioning rod such that the first tensioning rod moves between a first open screen assembly receiving position to a second closed and secured screen assembly tensioning position. The second screen tensioning system may include a second ratchet assembly configured to rotate a second tensioning rod such that the second tensioning rod moves between a first open screen assembly receiving position to a second closed and secured screen assembly tensioning position.

[0058] In one embodiment, a method of screening material includes: feeding material on a vibrating screening machine having a plurality of screen assemblies configured in a stacked arrangement, each screen assembly being configured to accommodate a replaceable screen assembly, securing the screen assembly to the screen assembly by tensioning the screen assembly in a direction in which the material flows through the screen assembly; and screening the material so that undersized material passing through the screen assembly flows into an undersized material discharge assembly and oversized material flows through an end of the screen assembly into an oversized material discharge assembly. The undersized material discharge assembly includes an undersized chute assembly in communication with each screen assembly, and the oversized material discharge assembly includes an oversized chute assembly in communication with each screen assembly.

[0059] The oversized chute assembly may include first and second oversized chute assemblies. The undersized chute and the first and second oversized chute assemblies may be located below the plurality of screen plate assemblies, and the undersized chute may be located between the first and second oversized chute assemblies.

[0060] At least one of the plurality of screen plate assemblies may be replaceable. Each screen plate assembly may include a first screen assembly and a second screen assembly. The slot may be located between the first screen assembly and the second screen assembly. The slot may include a curved weir structure.

[0061] A screen tensioning system may be included having a tensioning rod extending substantially perpendicular to the flow direction of the screened material. The tensioning rod may be configured to cooperate with a portion of the screen assembly and tension the screen assembly when rotated.

[0062] Figures 1 to 4 A vibrating screening machine 100 is shown. The vibrating screening machine 100 includes an outer frame 110 and an inner frame 120 (see, for example, Figure 2 )'s frame assembly, feed assembly 130, multiple screen plate assemblies 400, top vibration assembly 150, small size material collection assembly 160 and large size material collection assembly 170.

[0063] Figure 1 A side perspective view of vibratory screening machine 100 is shown. Figure 2 A top perspective view of a vibrating screening machine 100 is shown, from Figure 1 The vibrating screening machine 100 is shown from the opposite side. Figure 2 As shown, the opposite side of the vibrating screening machine 100 includes mirror-image components of the outer frame 110, such as Figure 1 Mirror image outer frame components are indicated by adding an apostrophe (') to the end of the corresponding component reference number.

[0064] like Figure 1 and 2As shown, the outer frame 110 includes a longitudinal set of base supports 111 and 118, a transverse set of base supports 112 and 112', and two sets of vertical channels 113 and 113' and 114 and 114'. The vertical channels 113 and 113' and 114 and 114' each have a first end 113A and 113'A and 114A and 114'A, a middle portion 113B and 113'B and 114B and 114'B and a second end 113C and 113'C and 114C and 114'C, respectively. Each of the first end portions 113A and 113'A and 114A and 114'A is elevated relative to the second end portion 113C, and 113'C and 114'C and 114C and 114'C, wherein the intermediate portions 113B and 113'B and 114B and 114'B extend the length between the first and second ends, respectively. The outer frame 110 also includes upper angled channels 115 and 115' and lower angled channels 116 and 116'. The upper angled channels 115 and 115' and the lower angled channels 116 and 116' each have first ends 115A and 116A, intermediate portions 115B and 116B, and second ends 115C and 116C, respectively. The first ends 115A and 116A are elevated relative to the second ends 115C and 116C, and the intermediate portions 115B and 116B extend the length between the first ends 115A and 116A and the second ends 115C and 116C, respectively. The outer frame 110 also includes three sets of descending channels: 117 and 117', 118 and 118', and 119 and 119'. Each descending channel has a first end 117A, 118A and 119A, and the first ends 117A, 118A and 119A are elevated relative to their respective second ends 117B, 118B, 119B.

[0065] refer to Figure 1 and 2, the opposite ends of the longitudinal base supports 111 and 111' are connected to the opposite ends of the transverse base supports 112 and 112', so that the four base supports form a rectangular shape. The second ends 113C and 113'C and 114C and 114'C of each corresponding upright channel are attached to the four corners where the base channels 111 and 111' intersect with the base channels 112 and 112'. The middle portions 113B and 113'B of the upright channel 113 are attached to the first end 119A of the downwardly inclined channel 119. The second end 119B of the downwardly inclined channel 119 rests above the longitudinal base support 111. The first end 113A of the upright channel 113 is attached to the middle portion 115B of the upper angled channel 115 and the first end 118A of the downwardly inclined channel 118. The first end 115A of the upper angled channel 115 is attached to the first end 117A of the downwardly inclined channel 117. The second end 117B of the downwardly inclined channel 117 is connected to the middle portion 116B of the downwardly inclined channel 116 towards the first end 116A. The second end 118B of the downwardly inclined channel 118 is connected to the middle portion 116B of the downwardly inclined channel 116 towards the second end 116C. The second end 116C of the lower angled channel 116 is attached to and terminates at the second end 119B of the downwardly inclined channel 119.

[0066] Reference Figure 2 , the outer frame 110 also includes a rear slot 109 having opposite ends connected to each of the middle portions 113B and 113B' of the upright slot 113. Additional rear channels 108 extend parallel to the rear channels 109, and the opposite ends of each rear channel 108 are attached to the lower angled channel 116 and its corresponding lower angled channel 116' from the middle portion 116B toward the second end 116C to provide structural support to the outer frame 110.

[0067] like Figure 2 As shown, the inner frame 120 mounts the top vibration assembly 150 and the screen plate assembly 400 by a fixing mechanism such as bolts. The inner frame 120 includes upper angled channels 125 and 125', lower angled channels 126 and 126', upper downwardly inclined channels 127 and 127', and lower downwardly inclined channels 128 and 128'. The upper inclined channel 125 and the lower inclined channel 126 of the inner frame 120 extend parallel to the upper inclined channel 115 and the lower inclined channel 116 on the inner side of the outer frame 110. The upper inclined channel 127 and the lower inclined channel 128 of the inner frame 120 extend parallel to the inclined channels 117 and 118 on the inner side of the outer frame 110. Although in Figure 1 and Figure 2100. Although not shown, the inner frame 120 can be mounted to the outer frame 110 with elastomeric mounts or other similar mounts, which allows the inner frame 120 to maintain vibratory motion while suppressing the effects of vibration on the structural integrity of the fixed outer frame 110. In one embodiment, the elastomeric mounts are made of a composite material including rubber and have female threads that receive male bolts from the inner and outer frames. The elastomeric mounts can be replaceable components. Although the outer frame 110 is shown in the specific configuration described, it can have a different configuration as long as it provides the structural support required for the inner frame 120. In an embodiment, the vibrating screening machine 100 may have an outer frame that includes legs for connecting to an existing structure.

[0068] In some embodiments, the top vibration assembly 150 includes side panels 153 and 153', a first vibration motor 151A and a second vibration motor 151B. The side panels 153 and 153' have a top angled edge 154, a bottom edge 155 and an outer surface 156. The bottom edge 155 of the side panel 153 is fixed to the side channel 430 of the screen panel assembly 400 by a fixing mechanism such as a bolt. The outer surface 156 includes ribs 157 that provide structural support for the top vibration assembly 150. The opposite sides of the vibration motor 151A and the second vibration motor 151B are mounted to the top angled edge 154 of the side panels 153 and 153'. The first vibration motor 151A and the second vibration motor 151B are configured so that they can vibrate all the screen panel assemblies 400 mounted to the inner frame 120. Although in Figure 1 and Figure 2 1 and 2. Although shown in a particular configuration, it should be noted that the top vibration assembly 150 can have other arrangements that maintain the functionality described herein.

[0069] like Figure 2As shown, the vibrating screening machine 100 includes a feed assembly 130. The feed assembly 130 includes a support frame 134, a plurality of vertical supports 136, a feed inlet pipe 131, a mounting arm 132 and a feed outlet pipe 133. The mounting arm 132 is fixed to the support frames 134 and 134' by a fixing mechanism such as a bolt. The support frames 134 and 134' are located above and parallel to the inclined channels 117 and 117' of the outer frame 110. The vertical supports 136 fix the support frames 134 and 134' to the inclined channels 117 and 117' of the outer frame 110 so that the feed assembly 130 is fixed relative to the vibrating inner frame 120. The inlet pipe 131 is used to accommodate the slurry flow from the diverter device, such as shown in U.S. Patent No. 9,718,008, the entire contents of which are incorporated herein by reference. Other embodiments can be combined with other material flow components. The material entering the diverter device can be supplied to the outlet pipe 133. The outlet conduits 133 are located above the raised sides of the screen panel assemblies 400 so that each outlet conduit 133 is configured to discharge a material flow 500 to each screen panel assembly 400. Earlier systems had hoses located one level above the vibrating machine, whereas in the assembly of the present disclosure, the configuration of the inlet on the vibrating machine provides a substantially distributed flow drop and greatly reduces the height of the machine. This is an important space saving feature of at least some embodiments of the present disclosure.

[0070] Figure 3 A front view of vibratory screening machine 100 is shown. Figure 4 1 shows a rear view of the vibrating screening machine 100. Figure 3 and 4 As shown, the vibrating screening machine 100 includes a small-size material collecting assembly 160 and a large-size material collecting assembly 170. Figure 3 The small-size material collection assembly 160 includes a plurality of collection trays 161 fixed to the lower side of each screen plate assembly 400, a plurality of pipes 162 communicating with the collection trays 161, and a small-size material collection trough 166. The large-size material collection assembly 170 includes a plurality of large-size material collection troughs 171 mounted to the lower end plate 428 of each screen plate assembly 400, and two oversize material collection troughs 176 and 176' communicating with the large-size material collection troughs 171. Figure 4 As shown, the oversized material collection tanks 176 and 176' include vibration motors 179 and 179'. Figure 3 and 4As shown, the undersized material collection trough 166 extends between the oversized material collection trough 171 and the oversized material collection troughs 176 and 176' below the screen deck assembly 400 of the vibratory screening machine 100. Although shown in a particular configuration, the oversized material collection troughs 176 and 176' and the vibratory motors 179 and 179' may have different arrangements that facilitate conveying the oversized material 500 discharged from the screen deck assembly through the oversized material collection troughs 176 and 176'.

[0071] Figures 5 to 10 Various views of the frit assembly 400 are shown. Figure 5 An enlarged isometric perspective view of the screen assembly 400 is shown. The screen assembly 400 includes a first screen assembly 410, a second screen assembly 420, side channels 430 and 430', a wash tray 440, and a tensioning device 450. Figure 5 As shown, the first screen plate assembly 410 and the second screen plate assembly 420 are covered by the first screen assembly 409 and the second screen assembly 419, respectively. The first screen assembly 409 and the second screen assembly 419 are replaceable screen assemblies, which are attached to the first screen plate assembly 410 and the second screen plate assembly 420. In operation, the material 500 to be screened by the vibrating screening machine 100 is discharged from the feed outlet conduit 133 of the feed assembly 130 along the feed end 409A of the first screen assembly 409 to the raised side of the first screen assembly 409, and vibrates through the first screen assembly 409 of the first screen plate assembly 410, passes over the discharge end 409B of the first screen assembly 409, and enters the wash tray 440.

[0072] The vibration carries the material 500 onto the wash tray 440 where the material passes through the feed end 419A of the second screen assembly 419. As described herein, the material 500 strikes the second screen assembly 419 in the screen impact zone 448 and then vibrates through the second screen assembly 419 of the second screen plate assembly 420 and over the discharge end 419B of the second screen assembly 419 along the lower end plate 428. The first screen assembly 409 and the second screen assembly 419 are configured such that undersized material passes through the first screen assembly 409 and the second screen assembly 419 and falls into the undersized material collection tray 161 and is collected into the undersized material collection trough 166 via the conduit 162. The oversized material does not pass through the screen assemblies 409 and 419 but is vibrated away from the lower end plate 428 and is collected into the oversized collection troughs 176 and 176' through the oversized material collection troughs 171 and 171'. The direction of material flow is indicated by the large arrows.

[0073] Although shown in this particular configuration in the drawings, the large material collection troughs 171 and 171' and the oversize material collection troughs 176 and 176' can have different arrangements to receive oversize material discharged from each screen plate assembly and provide the functions described herein. The flow of material through the separate large material collection troughs 171, 176 and the central undistributed small material collection trough 166 allows for efficient flow in a reduced space. The configuration of the collection troughs 166, 171, 176 reduces the footprint of the machine 100 while providing direct and efficient flow.

[0074] The first screen plate assembly 410 includes an upper end plate 416 and a lower end plate 418. The second screen plate assembly 420 includes an upper end plate 426 and a lower end plate 428. The opposite sides of the first screen plate assembly 410 and the second screen plate assembly 420 are fixed to the middle sides of the side channels 430 and 430' by fixing mechanisms (e.g., bolts or welding). The lateral sides of the side channels 430 and 430' include a plurality of angled plates 432. The angled plates 432 include holes through which fixing mechanisms such as bolts can extend to fix the side channels 430 and 430' to the upper and lower inclined channels 127 and 127' and the lower and lower inclined channels 128 and 128' of the inner frame 120. Although shown in this particular arrangement, the side channels 430 and 430' and the angled plates 432 can have different configurations that allow the screen plate assembly 400 to vibrate so that materials 500 of different sizes are separated as needed.

[0075] Figure 6 A partial side perspective view of the frit assemblies 410 and 420, the wash tray 440, the side channel 430, and a portion of the tensioning device 450 is shown. Figure 6 As shown, the flexible material 405 covers the outlet pipe 133 of the feed assembly 130. The flexible material 405 is used to control the material flow from the outlet pipe 133 to the screen assembly 400 so that the material flow is evenly distributed on the screen assembly 400, thereby maximizing the efficiency of the vibrating screening machine 100. Figure 6 As shown, the first screen plate assembly 410 and the second screen plate assembly 420 do not include the screen assemblies 409 and 419, but it should be understood that when the vibrating screening machine 100 is used to separate materials of different sizes, the first screen plate assembly 410 and the second screen plate assembly 420 are covered by the screen assemblies 409 and 419, and as described herein, the first screen plate assembly 410 and the second screen plate assembly 420 can be replaced when worn or damaged.

[0076] Reference Figure 6, the first screen panel assembly 410 includes ribs 412, longitudinal beams 414 (e.g., support structures), an upper end plate 416, and a lower end plate 418. The second screen panel assembly 420 includes ribs 422, longitudinal beams 424, an upper end plate 426, and a lower end plate 428. The opposite ends of the ribs 412 and 422 are respectively on the upper end plate 416 of the first screen panel assembly 410 (e.g., see Figure 5 ) and the lower end plate 418 and the upper end plate 426 and the lower end plate 428 of the second screen plate assembly 420 (see, for example, Figure 5 ) extend from the side channels 430 and 430' at each midpoint between the first and second screen panel assemblies 410 and 420. A plurality of longitudinal beams 414 and 424 extend from the upper end panels 416 and 426 to the lower end panels 418 and 428, respectively. The midpoint 415 of each longitudinal beam 414 and the midpoint 425 of each longitudinal beam 424 traverse the top surfaces of the ribs 412 and 422. The midpoints 415 and 425 are elevated relative to the opposite ends of the longitudinal beams 414 and 424 so that the longitudinal beams 414 and 424 form a "crown" or curvature on the first and second screen panel assemblies 410 and 420.

[0077] Although the first screen assembly 410 and the second screen assembly 420 are shown as having single ribs 412 and 422, respectively, it should be understood that the first screen assembly 410 and the second screen assembly 420 may include other configurations. The first screen assembly 410 and the second screen assembly 420 may include a first plurality of ribs and a second plurality of ribs, respectively, as long as the additional ribs provide the functions described herein. In some embodiments, at least one (or in some embodiments, each) of the first plurality of ribs and the second plurality of ribs may be assembled similarly to rib 412 or rib 422.

[0078] Unlike screen assemblies of other systems, such as those disclosed in U.S. Pat. No. 6,431,366, the longitudinal beams 414 and 424 can be replaceable units and can be fastened to the ribs 412 and 422 rather than welded to the ribs 412 and 422. The longitudinal beams 414 and 424 can be fastened to the ribs 412 and 422 using a variety of fasteners, such as bolts. This construction eliminates the closely spaced weld joints between the ribs 412 and 422 and the longitudinal beams 414 and 424 that are common in welded screen panel assemblies. This arrangement eliminates the shrinkage, thermal deformation, and droop associated with closely spaced weld joints, and enables quick replacement of worn or damaged longitudinal beams 414 and 424 in the field. The replaceable longitudinal beams 414 and 424 can include plastics, metals, and / or composite materials, and can be constructed by casting and / or injection molding. Although Figure 6 4 and 420 are not shown, but the screen assemblies 410 and 420 are configured to support the screen assemblies 409 and 419 (see, for example, Figure 5), the screen assemblies 409 and 419 extend through the surface of the first screen assembly 410 and the second screen assembly 420, covering the ribs 412 and 422 and the longitudinal beams 414 and 424, respectively. Figure 5 shown.

[0079] Further references Figure 6 , the upper end plate 416 of the first screen plate assembly 410 (see, for example, Figure 5 ) is elevated relative to the lower end plate 418. Similarly, the upper end plate 426 of the second screen plate assembly 420 is elevated relative to the lower end plate 428 (see, for example, Figure 5 ). Wash tray 440 extends between lower end plate 418 of first frit assembly 410 and upper end plate 426 of second frit assembly 420. First frit assembly 410, wash tray 440, and second frit assembly 420 are configured such that the frit from outlet conduit 133 (e.g., see Figure 2 ) and the flexible material 405 of the feed assembly 130 pass through the first screen assembly 410 and the wash tray 440 before passing through the second screen assembly 420. This configuration increases the material flow to be screened to the large size material collection assembly 170 (e.g., see Figure 3 ) and small size material collection assembly 160 (see, for example, Figure 3 ) without increasing the surface area of ​​the vibrating screening machine 100 (see, for example, Figure 1 and Figure 2 ) footprint, so that the material flow can be effectively separated.

[0080] Figure 7 An isometric side view of a wash tray 440 connected to a first frit assembly 410 and a second frit assembly 420 is shown. Figure 7 As shown, the wash tray 440 includes an upper member 442 having a top 442A and a bottom 442B, a lower member 444 having a first end 444A and a second end 444B, and a curved side member 446 including a first end 446A and a second end 446B. The curved side member 446 includes an S-shaped curve called an "Ogee", which will be discussed in more detail below. The top 442A of the upper member 442 is connected to the lower end plate 418 of the first screen plate assembly 410. The bottom 442B of the upper member 442 is connected to the first end 444A of the lower member 444. The second end 444B of the lower member 444 is connected to the first end 446A of the curved side member 446. The second end 446B of the curved side member 446 is bent on the upper end plate 426 of the second screen plate assembly 420.

[0081] The resulting construction of the wash tray 440 creates a weir 447, which is a groove or depression that provides a structure for collecting the liquid flow or slurry flow 500 to be screened. The embodiment of the wash tray 440 with a curved weir structure has functional significance in the field of fluid dynamics. The curved weir structure is generally described as rising slightly from the base of the weir and reaching a maximum rise 449 at the top of the S-shaped curve of the curved weir structure. At or after reaching the maximum rise point 449, the fluid falls on the hyperbolic curve structure in a parabolic form. The flow equation for the curved weir is:

[0082]

[0083] like Figure 7 As shown, combining a wash tray 440 with a curved weir curved side member 446 between a first screen plate assembly 410 and a second screen plate assembly 420 of the screen plate assembly 400 can direct the material flow screened by the first screen plate assembly 410 to a desired impact point or impact area 448 near the upper end plate 426 of the second screen plate assembly 420, or to another desired location, so that the discharge flow impacts the downstream screen plate assembly at a predetermined wear surface rather than unevenly impacting the downstream screen plate assembly surface, such as the screen plate assembly opening. In this configuration, the impact point / area 448 can remain unchanged regardless of changes in fluid parameters (e.g., flow rate and / or viscosity). Incorporating the curved weir-shaped curved side member 446 into the wash tray 440 improves screening efficiency and consistency and reduces wear on the second screen plate assembly 420. The material flow after impact is Figure 7 Indicated by large arrows.

[0084] Figure 8 , 9A 9B shows the tensioning device 450. Figure 8 There is shown an isometric perspective view of tensioning device 450. Tensioning device 450 includes tensioning rod 451, brackets 454 and 454', and ratchet mechanisms 456 and 456'. Fig.9A A partial side view of two ratchet mechanisms 456 and two brackets 454 mounted to the side channel 430 of the screen panel assembly 400 is shown. Fig. 9B Shows Fig.9A 4 and 5. As described in more detail below, each screen assembly 400 includes two tensioning devices 450, one tensioning device 450 configured to tension the first screen assembly 409 of the first screen assembly 410 and the other tensioning device 450 configured to tension the second screen assembly 419 of the second screen assembly 420.

[0085] Reference Figure 8, the tensioning device 450 includes a tensioning rod 451, brackets 454 and 454', and ratchet mechanisms 456 and 456'. The tensioning rod 451 includes opposite mirrored ends 452 and 452, a tubular middle portion 453, and a tensioning strip 455. The opposite ends 452 and 452' of the tensioning rod 451 extend through holes 457 and 457' in the ratchet mechanisms 456 and 456', respectively, and are secured to the ratchet mechanisms 456 and 456' by a securing mechanism such as a bolt. The ratchet mechanisms 456 and 456' are secured to brackets 454 and 454', which in turn are secured to the side channels 430 and 430' of the screen plate assembly 400, respectively, by a securing mechanism (e.g., bolts), as shown. Fig.9A and 9B shown.

[0086] Although Figure 8 4. Although not shown in the drawings, the tubular middle portion 453 of the tensioning rod 451 extends the width of the screen assembly 400 from the side channel 430 to the side channel 430'. The tensioning rod 451 of each tensioning device 450 is located below the upper end plate 416 of the first screen assembly 410 and the upper end plate 426 of the second screen assembly 420. The tubular middle portion 453 and the tensioning strip 455 of the tensioning device 450 are used to accommodate the ends of the screen assemblies 409 and / or 419. The opposite end 452 of the tensioning rod 451, the tubular middle portion 453 and the tensioning strip 455 are arranged so that when the opposite end 452 and the tubular middle portion 453 are rotated in a counterclockwise direction, the tensioning strip 455 is rotated in a clockwise direction, thereby pulling the screen assemblies 409 and / or 419 toward the upper end plate 416 of the first screen assembly 410 and / or the upper end plate 426 of the second screen assembly 420. Although in Figure 8 4 and 5. The tensioning device 450 is shown as having a tubular middle portion 453 and a tensioning strip 455, but the tensioning device 450 may include other components that are used to accommodate the ends of the screen assemblies 409 and / or 419 and are connected to the ratchet mechanism 456 to allow the ratchet mechanism 456 to rotate the tensioning rod 451 and pull the screen assemblies 409 and / or 419 toward the upper end plates 416 and / or 426.

[0087] Fig.9A A partial side view of two ratchet mechanisms 456 and two brackets 454 of two tensioning devices 450 mounted to the side channels 430 of the screen panel assembly 400 is shown. Fig. 9B An enlarged view of ratchet mechanism 456 and bracket 454 is shown. Although not shown, tension rod 451 extends from each ratchet mechanism 456 on side channel 430 of screen assembly 400 to each ratchet mechanism 456' on the opposing side channel 430' below upper end plates 416 and 426 of screen assembly 400.

[0088] Fig.10A partial enlarged perspective view of a ratchet mechanism 456 mounted on the side channel 430 below the first screen assembly 410 is shown. The first screen assembly 410 is shown connected to the feed assembly 130 and the flexible flow control material 405. Fig.10 As shown, the ratchet mechanism 456 includes an upper portion 458 and a lower portion 460. The upper portion 458 includes a locking rod 459 that engages with a plurality of teeth 461 on the lower portion 460. The lower portion 460 includes an actuation point 462, and the second end 452 of the tensioning rod 451 extends through the hole 457 of the ratchet mechanism 456 at the actuation point 462. Fig.10 , the wrench 463 is configured to rotate the actuation point 462 of the ratchet mechanism 456. In response to the application of a counterclockwise rotational force to the wrench 463, the actuation point 462 and the tubular middle portion 453 of the tensioning rod 451 are configured to rotate in a counterclockwise direction, and the tensioning strip 455 is configured to rotate in a clockwise direction, so that the tensioning device 450 pulls the end of the screen assembly 409 toward the upper end plate 416.

[0089] In response to rotation of the wrench 463 and the actuation point 462 of the ratchet mechanism 456, the locking rod 459 of the upper portion 458 and the teeth 461 of the lower portion 460 are configured to lock the tensioner in place and maintain tension. Conventional tensioners used in vibrating screens apply tension in a left-right direction or toward the side channels 430 and 430' relative to the vibrating screen 100, while the tensioner 450 disclosed herein applies tension in a front-to-back direction or toward the upper end plate 416 and lower end plate 418 of the first screen plate assembly 410 and / or the upper end plate 426 and lower end plate 428 of the second screen plate assembly 420 relative to the vibrating screen 100. Unlike conventional tensioners, the front-to-back direction of the tensioning provided by the tensioner 450 corresponds to the direction of flow of material (e.g., slurry) through the first screen plate assembly and the second screen plate assembly when separated by the vibrating screen 100. Although in Fig.10 A wrench 463 is shown in FIG. 4 , but other tools may be employed to rotate the actuation point 462 of the ratchet mechanism 456 to provide the functionality described herein.

[0090] Fig.11A and 11B An embodiment of a small size material collection assembly 160 is shown. The small size material collection assembly 160 includes a plurality of collection trays.

[0091] A plurality of conduits 162 are connected to the collection tray 161, and a small-sized material collection tank 166. Fig.11A and 11BAs shown, the undersized material collection trough 166 includes a mounting end 167, which can be fixed to the outer frame 110 of the vibrating screening machine 100 by a fixing mechanism (e.g., bolts), a top surface 168 extending the length of the undersized collection trough 166, and a discharge port 169. Each duct 162 includes an inlet 163, a chamber 164, and an outlet 165. The inlet 163 of each duct 162 is configured to receive undersized material from the collection tray 161 and collect the material to the outlet 165 through the chamber 164 of the duct 162.

[0092] Each outlet 165 communicates with a portion of a top surface 168 of an undersized collection trough 166 such that material discharged from the outlet 165 of the conduit 162 enters the undersized collection trough 166 and exits through the discharge port 169. The undersized material feeder can be configured to accommodate undersized material discharged from the discharge port 169. Although not shown, the inlet 163 of the conduit 162 can include a radial gap to accommodate the undersized material discharged from the collection pan 161 (see Figure 3 and Figure 4 ), the collecting plate 161 is mounted to the screen plate assembly 400, and the inlet 163 of the pipe 162 may include a radial gap to accommodate the vibrating movement of the collecting plate 161.

[0093] The conduit 162 and the undersized collection trough 166 are mounted to the stationary outer frame 110. Placing the undersized material collection trough directly below the conduit 162 increases the efficiency of the vibrating screening machine 100 and saves space by funneling all undersized material flows into the central channel.

[0094] Figures 12A to 13B The large-size material collection assembly 170 is shown. The large-size material collection assembly 170 includes a plurality of large-size material collection slots 171 mounted to the lower end plate 428 of each screen plate assembly 400, and two oversize material collection slots 176 and 176' (see, for example, FIG. 1) in communication with the large-size material collection slots 171. Figure 3 and Figure 4 ). Fig. 12A and 12B An embodiment of a large sized material collection trough 171 is shown. Fig.13A and 13B An embodiment of an oversized material collection tank 176 is shown. Figure 6 .

[0095] Reference Fig. 12A and 12BEach oversize material collection trough 171 includes a first side 172 and a second side 172' that is a mirror image of the first side 172, both of which have an inlet 173 with a mounting arm 173A, a chamber 174, and an outlet 175. The mounting arm 173A of each oversize material collection trough 171 is fixed to each lower end plate 428 of the screen assembly 400 by a fixing mechanism (e.g., bolts), so that the material that does not pass through the screen assembly 409 and / or 419 to reach the undersize discharge assembly rolls from the lower end plate 428 of the screen assembly 400 into the inlet 173 of the oversize material collection trough 171 (e.g., see Figure 3 to Figure 4 ). Upon or after entering inlet 173, oversized material is collected by chamber 174 and discharged from outlet 175 into oversized material collection trough 176. Although shown as having a trapezoidal shape, it should be understood that oversized material collection trough 171 is not limited to this configuration. Oversized material collection trough 171 may have other arrangements as long as such trough can receive oversized material from lower end plate 428 of screen plate assembly 400 and can transfer the oversized material to one of oversized material collection troughs 176 and 176'.

[0096] Reference Fig.13A and 13B The oversize material collection tank 176 includes a mounting end plate 177, a rear surface 178, an outlet 180, and a channel 181. The mounting end plate 177 is fixed to the rear channel 129 of the inner frame 120 by a fixing mechanism such as bolts (see, for example, Figure 3 and Figure 4 ). A channel 181 extends from the mounting end plate 177 to an outlet 180 below each outlet 175 of the oversize material collection trough 171, so that the oversize material discharged from each oversize material collection trough 171 falls into the channel 181 of the oversize material collection trough 176. The vibration motor 179 is mounted to the rear surface 178 of the oversize material collection trough 176 by a fixing mechanism (e.g., bolts) to increase the rate at which the oversize material reaches the outlet 180 through the channel 181, thereby increasing the volume of material that can be processed by the vibration screening machine 100 as a whole. Although not shown, the oversize material feeder can be configured to accommodate the oversize material discharged from the outlet 180 of the oversize material collection trough 176.

[0097] Fig.14 is similar to Figure 7 4 is a side view of the screen assembly 400, showing details of the tensioning assembly 450 for tensioning the second screen assembly 419 along the second screen assembly 420. Fig.14As shown, the material 500 to be screened flows through the first screen assembly 409 via vibration toward the discharge end 409B of the first screen assembly 409. During the passage, appropriately sized particles of the material 500 pass through the openings or holes 488A of the first screen assembly 409. After passing through the discharge end 409B of the first screen assembly 409B, the material 500 enters the wash tray 440 and passes through the curved side members 446 and the maximum rise 449. After passing through the maximum rise 449, the material 500 falls on the impact zone 448 of the second tray 419 and then vibrates through the second screen assembly 419, passing from the input end 419A to the discharge end 419B, wherein the appropriately sized particles of the material 500 pass through the second screen assembly 419 along the path. Screen assemblies 409, 419 are selectively secured to screen panel assemblies 410, 420 via screen panel assembly clamps 455B of screen panel assemblies 410, 420 and tensioning strips 455 of tensioning device 450 in a manner described in more detail below.

[0098] from Fig.14 As will be appreciated, and as explained in further detail below, the discharge ends 409B, 419B of screen assemblies 409, 419 are connected to fixed screen assembly clamps 455B, while the opposing input ends 409A, 419A are connected to tensioning bands 455 of tensioning device 450. As tensioning bands 455 rotate, screen assemblies 409, 419 are tensioned back and forth across associated screen assembly 410, 420 in the same direction as the material to be screened flows through screen assembly 400. This is an improvement over earlier systems in which the screen assemblies were tensioned from the side, leaving a crown perpendicular to the flow of material to be screened, creating valleys and inefficiencies in the flow.

[0099] Fig.15 is a screen assembly 400 (see also Figure 5 , 6 10) are side perspective views showing additional details of the first and second screen assemblies 409, 419 tensioned on the first and second screen panel assemblies 410, 420, respectively. Fig.15 , portions of the screen assemblies 409, 419 have been cut away to show various aspects of the underlying screen assemblies 410, 420 (including those described above with reference to Figure 6 and 10 The material 500 is shown passing through the wash tray 440 and falling onto the impact zone 448 of the second filter 419.

[0100] Fig.16A and 16B A view of a second screen assembly 419 is shown for use with the vibratory screening machine 100 and screen deck assembly 400 described above. Fig.16A and 16BThe following description of the embodiments depicted in is made with reference to the second screen assembly 419, but it should be noted that the discussion also applies to the first screen assembly 409; the first screen assembly 409 can generally be the same as the second screen assembly 419, but can optionally have different sizes and configurations, for example, impact zones 448 of different sizes (smaller or larger), opening configurations of different sizes, combinations thereof, etc.

[0101] Fig.16A 4 is a front perspective view of a second screen assembly 419 according to one or more embodiments of the present invention. The second screen assembly 419 is configured to be removably fixed to the screen plate assembly 420 under tension in a manner described herein. The second screen assembly 419 includes a feed end 419A and an opposite discharge end 419B. The second screen assembly 419 has a width dimension between the ends 419A and 419B, and a length dimension between the opposite side edges 483. The filtering area 488 is defined by a plurality of separate openings or holes 488A extending substantially across the surface of the second screen assembly 419. The opening 488A has a selected size, such as a size determined by a side length having a corresponding size in the range from about 20 microns to about 100 microns. In some embodiments, the opening 488A can be rectangular in shape and can have a substantially uniform width or a substantially uniform thickness in the range between about 43 microns to about 100 microns, and a substantially uniform length in the range between about 43 microns to about 2000 microns.

[0102] exist Fig.16A In the embodiment of the present invention, the filtering area 488 is composed of an impact zone 448 formed along the feed end 419A, a strip 486 formed along the discharge end 419B, and an opposing side strip 484 formed along the corresponding side edge 483. The ends of the impact zone 448, the strip 486, and the side strip 484 are integrally joined together at the abutment points and together provide structural support for the filtering area 488 to prevent tearing, etc. during placement and use on the machine 100. Fig.14 As the material 500 flows through the curved member 446 of the wash tray 440, the material 500 lands on the impact zone 448. The impact zone 448 protects the integrity of each opening 488A and prevents or reduces the possibility of large particles being trapped in the opening 488A. Fig.14 As shown, appropriately sized particles of material 500 pass through openings 488A as material 500 flows from feed end 419A to discharge end 419B. Impact zone 448 may have different sizes and configurations depending on the screening application and desired flow characteristics.

[0103] like Fig.16A and 16BAs shown, the first adhesive strip 481A is disposed along the feed end 419A, and the second adhesive strip 481B is disposed along the discharge end 419B. Each adhesive strip 481A, 481B can be a generally U-shaped metal strip that is substantially integrated into the feed end 419A, 419B along the length of each respective end 419A, 419B. Although alternative means can be used to attach the adhesive strips 481A, 481B to the second screen assembly 419, the adhesive strips 481A, 481B can also be attached to the second screen assembly 419.

[0104] 481B is configured to withstand substantial forces during operation of vibratory screening machine 100 without separating from second screen assembly 419 or otherwise allowing second screen assembly 419 to loosen from screen deck assembly 420 .

[0105] Fig. 16B 4 is a side view of a screen assembly 419 for an exemplary embodiment of the present invention. Fig. 16B When viewed from the side as shown, the second screen assembly 419 presents a thin profile. Fig. 16B As shown, the second screen assembly 419 includes a material input surface 485A on the upper side and a material output surface 485B on the opposite lower side. Each screen hole 488A extends from the input side 485A to the output side 485B so that during vibration screening, each particle passes through the screen area 488. Fig. 16B In the illustrated embodiment, first and second adhesive strips 481A, 481B extend downwardly from the underside of second screen assembly 419. Each adhesive strip 481A, 481B is bent backwards toward the center of second screen assembly 419, for example, in an L-shape or a C-shape.

[0106] The dimensions of the screen assemblies 409, 419 match the dimensions of the screen plate assemblies 410, 420. In some embodiments, the screen assemblies 409, 419 can have a length of about 56 cm, a width of about 30 cm, and a thickness of about 0.25 cm. The impact zone 448 is about 3 cm wide; narrower or wider impact zones 448 can be used, the former to reduce protection and the latter to reduce the number of openings 488A. The width of the strips 486 and side strips 484 is about 1 cm. The screen assemblies 409, 419 can be made of polyurethane or thermoplastic polyurethane (TPU). Although in Fig.16A and Fig. 16BAn exemplary embodiment of a second screen assembly 419 for use with the vibrating screening machine 100 described herein is shown in FIG. 1 , but it should be understood that the machine 100 may be configured for use with alternative configurations of screens, screen materials, and screen properties (openings / apertures, connection mechanisms, etc.). Examples of screens, screen materials, and screen properties that may be incorporated into screen assemblies 409, 419 for use with the machine 100 are described in Applicant's U.S. Patent Nos. 10,046,363; 9,409,209; and 9,884,344; the disclosures of each of which are incorporated herein by reference in their entirety.

[0107] The method of connecting the screen assemblies 409, 419 to the screen plate assemblies 410, 420 is described below. Fig.14 As shown, screen assembly clamp 455B is secured adjacent to the respective output ends 410B, 420B of screen assemblies 410, 420. Screen assembly clamp 455B is sized and configured to attach output ends 409B, 419B of screen assemblies 409, 419 to screen assemblies 410, 420. In one embodiment, screen assembly clamp 455B extends substantially along the length of discharge ends 410B, 420B in a manner similar to adhesive strips 481A, 481B extending along the length of screen assemblies 409, 419. Fig.14 In the embodiment shown, the screen assembly clamp has an L-shaped aspect when viewed in side profile, but other engagement configurations, such as a curved C-shaped aspect, may also be used. Fig.14 It will be appreciated that the second adhesive strip 481B along the discharge end 409B, 419B of the screen assemblies 409, 419 is joined to the screen assembly clamp 455B such that the L-shaped or C-shaped appearance of the adhesive strip 481B intersects with the L-shaped or C-shaped appearance of the screen assembly clamp 455B. Tension is applied to unfold the screen assemblies 409, 419 across the screen assemblies 410, 420 toward the input end 410A, 420A such that the binding clamp 481B remains interconnected with the screen assembly clamp 455B. With the screen assemblies 409, 419 unfolded across the screen assemblies 410, 420, the first adhesive strip 481A of the screen assemblies 409, 419 is then joined to the tensioning strip 455 of the tensioning device 450 such that the L-shaped or C-shaped appearance of the tensioning strip 455 is interconnected with the first adhesive strip 481A. Tension is then applied to screen assemblies 409 , 419 via tensioning device 450 to selectively lock first adhesive strip 481a to tensioning strip 455 , whereby filters 409 , 419 are tensioned along screen deck assemblies 410 , 420 for screening particles of material 500 during operation of machine 100 .

[0108] After a period of use, the screen assembly 409, 419 can be selectively removed from the screen panel assembly 410, 420 to be replaced with a new screen assembly 409, 419. In the method of removing the screen, the tensioning device 450 is used to release the tensioning strip 455 from the first strip 481A. The screen assembly 409, 419 is then pulled or slid toward the discharge end 410A, 420A of the screen panel assembly 410, 420 to release the second adhesive strip 481B from the screen panel assembly clamp 455B.

[0109] Fig.17 1 is an isometric view of a screen assembly 1700 having a screen assembly 1702 mounted thereon according to one or more embodiments of the present invention. In this embodiment, the screen assembly 1700 may employ a tensioning mechanism that holds the screen assembly 1702 by providing side-to-side tension, which is similar to, for example, Figure 5 and 15 In contrast to the above-described embodiment shown in , which provides fore-aft tensioning. In this example, the tensioning mechanism provides tension to the screen assembly 1702 from above, as described in more detail in U.S. Pat. No. 9,010,539, the disclosure of which is incorporated herein by reference in its entirety. The tensioning mechanism in the screen panel assembly 1700 (where tension is applied from above) is also similar to Figure 5 and Fig.15 This is in contrast to an embodiment in which tension is applied from below.

[0110] Screen panel assembly 1700 includes screen assembly 1702 in a first screening portion of screen panel assembly 1700. A second screening portion of screen panel assembly 1700 is shown without the screen assembly to expose a plurality of ribs 1704 that provide structural support to a plurality of longitudinal beams 1706. Figure 6 As described, stringers 1706 provide structural support for screen assemblies (e.g., screen assembly 1702). In this example, ribs 1704 extend between side channels 1708a and 1708b. Stringers 1706 extend from end plates 1710a to 1710b. The midpoint 1712 of each stringer 1706 crosses the top surface of the center rib of rib 1704. In this example, midpoint 1712 is elevated relative to the opposite end of stringers 1706, so that stringers 1706 create a "crown" or convex curvature on the screening portion of screen assembly 1700.

[0111] and Figure 6As with the example of, as described above, the longitudinal beam 1706 can be a replaceable unit and can be fastened to the rib 1704 instead of being welded to the rib 1704. The longitudinal beam 1706 can be fastened to the rib 1704 using various fasteners such as bolts. This construction eliminates the closely spaced weld joints between the rib 1704 and the longitudinal beam 1706 that are typically found in welded screen plate assemblies. This arrangement eliminates the shrinkage, thermal deformation and drop associated with closely spaced weld joints, and enables the rapid replacement of worn or damaged longitudinal beams 1706 in the field. The replaceable longitudinal beam 1706 may include plastic, metal and / or composite materials, and may be constructed by casting and / or injection molding. Screening systems of other embodiments may include removable and replaceable longitudinal beams, as described in the following examples.

[0112] Fig.18 A perspective view of a vibrating screening machine 1800 with a replaceable screen assembly 1802 installed according to an exemplary embodiment of the present invention is shown. The vibrating screening machine 1800 is described in more detail in, for example, U.S. Patent No. 7,578,394, the disclosure of which is incorporated herein by reference in its entirety. In this example, the material is fed into a feeder 1804, thereby being directed onto a top surface 1806 of the screen assembly 1802. The material travels along a flow direction 1808 toward an end 1810 of the vibrating screening machine 1800. The material flowing in direction 1808 is contained within a concave configuration provided by the screen assembly 1802 and is prevented from leaving the side of the screen assembly 1802.

[0113] Undersized material and / or fluid flows through screen assembly 1802 to a separate discharge material flow path 1812 for further processing by another vibrating screen, centrifuge, etc. Oversized material exits end 1810. The material to be screened may be dry, slurry, etc., and screen assembly 1802 may be tilted downward from feeder 1804 toward opposite end 1810 in direction 1808 to assist in feeding of the material. In further embodiments, screen assembly 1802 may be tilted upward from feeder 1804, and / or feeder 1804 may provide material at different locations along screen assembly 1802. For example, in other embodiments, feeder 1804 may be positioned to deposit material in a middle portion of screen assembly 1802, or to deposit material in another location on screen assembly 1802.

[0114] In this example, vibrating screening machine 1800 includes wall member 1814, concave support surface 1816, center member 1818, vibration motor 1820, and hold-down assembly 1822. Support surface 1816 can have a concave shape and can include a similarly shaped mating surface 1824. Compression assembly 1822, which is attached to the outer surface of wall member 1814 in this example, can apply a compressive force to screen assembly 1802, thereby holding screen assembly 1802 in place, in contact with support surface 1816. Vibrating motor 1820 can apply a vibrating motion to screen assembly 1802, which is used to enhance the screening process. Center member 1818 divides vibrating screening machine 1800 into two concave screening areas. In other embodiments, vibrating screening machine 1800 may have a concave screening area in which hold-down assembly 1822 is disposed on one wall member, such as Fig. 20 shown and described in more detail below.

[0115] Fig.19 A perspective view of a partially assembled vibrating screening machine 1900 is shown according to an exemplary embodiment of the present invention. In this example, the vibrating motor 1820, feeder 1804, and most of the screen assembly 1802 have been removed from the vibrating screening machine 1800 to produce Fig.19 A view of a partially assembled vibrating screening machine 1900 is shown. This view shows the Fig.18 Detail of the mating surface 1824 mentioned above. As shown, the mating surface 1824 includes a plurality of longitudinal beams 1902a and 1902b. In this way, the longitudinal beams 1902a and 1902b provide a plurality of mating surfaces 1824, and the mating surfaces 1824 form the above reference Fig.18 The concave support surface 1816 mentioned. In this example, the longitudinal beam 1902a is supported by a plurality of ribs 1904a, and the longitudinal beam 1902b is supported by a similar plurality of ribs 1904b. The longitudinal beam 1902a extends between the wall member 1814a and the center member 1818, and the longitudinal beam 1902b extends between the wall member 1814b and the center member 1818. Fig.19 As shown, the ribs are positioned parallel to the wall members 1814a and 1814b. In this example, the longitudinal beams 1902a and 1902b have a concave shape to provide a concave support surface 1816 that supports the screen assembly 1802 under the compression force provided by the compression assembly 1822, as described above with reference to Fig.18 described.

[0116] With the above Figure 6 and 17As in the example of , the longitudinal beams 1902a and 1902b may be replaceable units and may be fastened to the ribs 1904a and 1904b, respectively, rather than being welded to the ribs 1904a and 1904b. Various fasteners may be used, such as bolts.

[0117] This construction eliminates closely spaced weld joints between the ribs 1904a, 1904b and the stringers 1902a, 1902b, thereby eliminating shrinkage, thermal distortion, and droop associated with closely spaced weld joints. The replaceable stringers 1902a and 1902b may include plastic, metal, and / or composite materials, and may be constructed by casting and / or injection molding.

[0118] Fig. 20 A perspective view of a vibrating screening machine 2000 is shown according to an exemplary embodiment of the present invention, wherein a replaceable screen assembly having a single concave screening area is installed. Vibrating screening machine 2000 is described in more detail, for example, in U.S. Patent No. 9,027,760, the disclosure of which is incorporated herein by reference in its entirety. Material 2002 to be screened can be fed into feeder 2004, which guides the material onto top surface 2006 of screen assembly 2008.

[0119] Material deposited by feeder 2004 travels in flow direction 2010 toward end 2012 of vibrating screening machine 2000. Material is prevented from exiting the sides of screen assembly 2008 by its concave shape and wall members 2016, as described in more detail below.

[0120] Undersized materials and / or fluids pass through screen assembly 2008 to a separate discharge material flow path 2014 for further processing. Oversized materials can leave end 2012. The material to be screened can be dry, slurry, etc., and screen assembly 2008 can be tilted downward from feeder 2004 toward opposite end 2012 in direction 2010 to assist in feeding of the material. In further embodiments, screen assembly 2008 can be tilted upward from feeder 2004, and / or feeder 2004 can provide material at different locations along screen assembly 2008. For example, in other embodiments, feeder 2004 can be positioned to deposit material in the middle portion of screen assembly 2008, or deposit material in another location on screen assembly 2008.

[0121] Vibratory screening machine 2000 includes first wall member 2016, second wall member 2018, concave support surface 2020, vibratory motor 2022, screen assembly 2008, and compression assembly 2026. Support surface 2020 has a concave shape and includes mating surface 2024. Compression assembly 2026, which in this example is attached to the outer surface of wall member 2016, can apply a compressive force to screen assembly 2008, thereby holding screen assembly 2008 in a position in contact with mating surface 2024 of support surface 2020.

[0122] The vibration motor 2022 can be configured to vibrate the screen assembly 2008 to strengthen the screen. The clamping assembly 2026 can be attached to the outer surface of the first wall member 2016 or the second wall member 2018. Fig. 20 As shown, vibratory screening machine 2000 has a single concave screening area. In further embodiments, the vibratory screening machine may have multiple concave screening areas. Although vibratory screening machine 2000 is shown with multiple longitudinally oriented screen assemblies 2008 forming a concave material channel, screen assemblies 2008 are not limited to this configuration and may be oriented in other ways. In addition, multiple screen assemblies 2008 may be provided to form a concave screening surface, such as Fig.18 As shown and described above.

[0123] Fig.21A A perspective view of a partially assembled vibrating screening machine 2100 is shown in accordance with an exemplary embodiment of the present invention. In this example, a portion of the screen assembly 2008 has been removed from the vibrating screening machine 2000 to produce Fig.21A A view of a partially assembled vibratory screening machine 2100 is shown.

[0124] In this view, the above reference Fig. 20 The mentioned concave support surface 2020 with the mating surface 2024 is provided by the plurality of stringers 2102. As in the previous example, the stringers 2102 are supported by the plurality of ribs 2104.

[0125] Fig.21B An enlarged view of the stringer 2102 and one of the plurality of ribs 2104 is shown. The stringer 2102 extends between the first wall member 2016 and the second wall member 2019, and the rib 2104 is configured to be positioned parallel to the first wall member 2016 and the second wall member 2019.

[0126] In this example, stringer 2102 has a concave shape to provide a concave support surface 2020 that supports screen assembly 2008 under the compressive force provided by compression assembly 2026, as described above with reference to Fig. 20 As mentioned above. Figure 6 and Fig.19As in the example of , the stringers 2102 can be replaceable units and can be fastened (e.g., bolted) to the ribs 2104 separately, rather than welded to the ribs 2104. This construction eliminates closely spaced weld joints between the ribs 2104 and the stringers 2102, thereby eliminating shrinkage, thermal deformation, and droop associated with closely spaced weld joints.

[0127] The replaceable stringer 2102 may include plastic, metal, and / or composite materials, and may be constructed by casting and / or injection molding.

[0128] Further embodiments may be configured for use with a variety of vibratory screening machines and components thereof, including machines designed for both wet and dry applications, machines having multiple layers of screen deck assemblies and / or multiple screen baskets, and machines having various screen attachment arrangements, such as tensioning mechanisms (e.g., undermount and overmount tensioning mechanisms), compression mechanisms, clamping mechanisms, magnetic mechanisms, etc. For example, embodiments may include, as disclosed in U.S. Patent Nos. 7,578,394; 6,820,748; 6,669,027; 6,431,366; and 5,332,101.

[0129] The screen assembly may include: side or tie bars including U-shaped members configured to receive upper-mounted tensioning members such as described in U.S. Patent No. 5,332,101; side or tie bars including finger receiving holes configured to receive lower-mounted tensioning members such as described in U.S. Patent No. 6,669,027; side members or tie bars for compression loading such as described in U.S. Patent No. 7,578,394; or may be configured for attachment and loading on a multi-layer machine such as described in U.S. Patent No. 6,431,366. The screen assembly and / or screen element may also be configured to include features described in U.S. Patent No. 8,443,984, including the guide assembly technology described therein and the preformed panel technology described therein. The screen assemblies and screen elements may also be configured to be incorporated into embodiments that include pre-screen technology that is compatible with the mounting structures and screen configurations described in U.S. Pat. No. 5,699,046.

[0130] U.S. Patent Nos. 8,439,984; 8,439,203; 7,578,394; 7,228,971; 6,820,748; 6,669,027; 6,431,366; 5,332,101; 4,882,054; and 4,857,176 and the entire contents of the patents and patent applications cited in these documents are incorporated herein by reference. Various other screening machines may be included in other embodiments as required by specific applications.

[0131] Fig. 22 A perspective view of a vibrating screening machine 2200 according to an exemplary embodiment of the present invention is shown, which is installed with a replaceable screen assembly and a pre-screen assembly 2202. Vibrating screening machine 2200 is described in more detail in, for example, U.S. Patent No. 8,439,203, the disclosure of which is incorporated herein by reference in its entirety.

[0132] In this example, material is fed into feeder 2204 and then directed onto concave screening surface 2208 of pre-screen assembly 2202. Screen assembly 2206 forms concave screening surface 2208. Undersized material passes through screening surface 2208 and onto main screening surface 2210. Oversized material is discharged from end 2212 of pre-screen assembly 2202. Material travels toward end 2214 of vibrating screen machine 2200. Material flowing within pre-screen assembly 2202 is contained within concave screening surface 2208. The material may be dry, slurry, etc.

[0133] Vibrating screening machine 2200 includes wall members 2216a and 2216b, center member 2218, and acceleration device 2220. Center member 2218 divides vibrating screening machine 2200 into two screening areas. However, vibrating screening machine 2200 may have one or more concave screening areas.

[0134] Fig.23 Shows Fig. 22 Vibratory screening machine 2200 is shown without feeder 2204 and installed screen assemblies 2206 and 2210. Pre-screen assembly 2202 includes frame 2302, which includes central spine 2304, ribs 2306, horizontal portion 2308, vertical portion 2310 and rod 2312. Frame 2302 has a general hull type shape, but can be configured in other arrangements suitable for pre-screening materials. Frame 2302 is configured to provide a generally concave surface to support screen assembly 2206. Pre-screen assembly 2202 also includes screen assembly attachment device 2314, which is configured to secure screen assembly 2206 to frame 2302. Screen assembly attachment device 2314 can include pre-tensioned spring clips, but can also include other screen fixing mechanisms, such as mechanical, electromechanical, pneumatic or hydraulic systems.

[0135] The vibrating screening machine 2200 may also include a first plurality of longitudinal beams 2320a and a second plurality of longitudinal beams 2320b. The longitudinal beams 2320a and 2320b may be used in conjunction with the above reference Fig.19 Stringers 1902a and 1902b are described to serve a similar purpose. In this regard, stringers 2320a and 2320b can provide mechanical support for screen assembly 2210 that can be held in place under compression.

[0136] In this example, the longitudinal beams 2320a and 2320b have a concave shape to provide a concave support surface for the screen assembly 2210 under compression forces, as described above with reference to Fig.18 As mentioned above. Figure 6 , Fig.19 As in the example of Figure 21, the longitudinal beams 2320a and 2320b can be replaceable units and can be fastened (e.g., bolted) to the support ribs (not shown in this example). As described above, the use of such replaceable longitudinal beams 2320a and 2320b eliminates the need to weld the longitudinal beams to the ribs. Therefore, the closely spaced welded joints between the ribs and the longitudinal beams are eliminated. The replaceable longitudinal beams 2320a and 2320b can include plastic, metal and / or composite materials and can be constructed by casting and / or injection molding. In further embodiments, other structures such as the pre-screen assembly 2202 can include replaceable elements, such as the frame 2302, the center ridge 2304, the ribs 2306, the horizontal portion 2308, the vertical portion 2310 and the rod 2312. Such elements can include plastic, metal and / or composite materials and can be plastic, metal and / or composite materials, constructed by casting and / or injection molding.

[0137] Fig.24 A portion 2400 of a vibrating screening machine with a replaceable stringer 2402 according to an exemplary embodiment of the present invention is shown. In this example, stringer 2402 is shown as having a flexible wear protection cover, which is described in further detail below. Stringer 2402 is fastened to support structures 2404a, 2404b, and 2404c. In this example, each of stringers 2402 can be fastened (e.g., bolted) to support structures 2404a, 2404b, and 2404c. Stringer 2402 can have a shape suitable for a given application. For example, as described above, stringer 2402 can have a convex shape for supporting a screen assembly (not shown) maintained under tension. In other embodiments, stringer 2402 can have a concave shape when the screen assembly is maintained under compression. In other embodiments, stringer 2402 can have a substantially straight shape. The stringer 2402 may be configured to have a conical or pyramidal cross-sectional shape, thereby providing a mating surface 2406 having an area that is smaller than the base area of ​​the stringer 2402, as described below with reference to Fig.26 Other embodiments may include stringers 2402 having other shapes, including stringers having circular cross-sections, triangular cross-sections, rectangular cross-sections, square cross-sections, hexagonal cross-sections, etc., as desired for a given application.

[0138] Fig.25A portion 2500 of a vibrating screening machine having a replaceable longitudinal beam with a wear protection cover 2502 is shown according to an exemplary embodiment of the present invention. The wear-resistant cover 2502 can be made of a flexible plastic or rubber material, which can be configured to provide wear protection for the removable and replaceable longitudinal beam (e.g., as Fig.26 In this example, the wear-resistant covering 2502 can be easily removed by grasping the wear-resistant covering 2502 at a point 2504 along the length of the wear-resistant covering 2502 and applying force to the wear-resistant covering 2502 to remove the wear-resistant covering 2502. For example, in Fig.26 The wear-resistant covering 2502 is shown removed in this manner.

[0139] According to an exemplary embodiment of the present invention, Fig.26 A portion 2600 of a vibrating screening machine is shown having replaceable longitudinal beams 2602 with wear shields 2502, one of which has been removed. In this example, the wear shield 2502 is made of a flexible material that can be easily removed by grasping and pulling the wear shield 2502, as described above with reference to FIG. Fig.25 As described. The wear-resistant covering 2502 can be made of a material that provides wear resistance to a longitudinal beam (e.g., longitudinal beam 2602). In this way, the wear-resistant covering 2502 can be made of a material having a predetermined scratch resistance, tear resistance, puncture resistance, etc. As described above, the wear-resistant covering 2502 can be configured to have a shape consistent with the shape of the corresponding longitudinal beam 2602. In this example, the longitudinal beam 2602 can have a conical or pyramidal cross-sectional shape, thereby providing a mating surface 2604 having a smaller area than the base area of ​​the longitudinal beam 2602. As desired for a given application, other embodiments may include longitudinal beams 2602 having other shapes, including longitudinal beams having circular cross-sections, triangular cross-sections, rectangular cross-sections, square cross-sections, hexagonal cross-sections, etc.

[0140] Fig. 27 The exemplary embodiment according to the present disclosure is shown Fig.26 An enlarged view 2700 of an uncovered stringer 2602 is shown. As described above, stringer 2602 can be fastened (e.g., bolted) to support structures 2404a, 2404b, and 2404c at respective points 2702a, 2702b, and 2702c along the length of stringer 2602. Stringer 2602 can be made of plastic, metal, and / or composite materials, and can be constructed by casting and / or injection molding. For example, stringer 2602 can be a single injection molded piece made of nylon or reinforced nylon. For example, stringer 2602 can include a fiberglass reinforcement material such as nylon or other material having similar properties.

[0141] As described above, the use of such replaceable stringers 2602 eliminates the need to weld stringers to ribs. Thus, closely spaced weld joints between ribs and stringers are eliminated. Avoiding welding eliminates mechanical problems associated with welding. For example, welding to ribs (e.g., Fig. 27 Conventional stringers of the support structures 2404a, 2404b, and 2404c shown exhibit mechanical deformation caused by the welding process. Such deformation results in alignment errors, which degrade the quality of the seal formed between the stringer and the screen mounted to the stringer. The injection molded stringer 2602 and the wear resistant cover 2502 (see, e.g., Fig.25 The use of injection molding provides a more accurate shape of the mating surface on which the screen assembly can be mounted. In this way, a tighter, more precise seal can be formed between the screen and the mating surface. The use of injection molding allows the manufacture of longitudinal beams 2602 and wear covers 2502 of almost ideal shapes. A variety of concave, convex and straight shapes can be generated as required by various embodiments.

[0142] In addition to the use for manufacturing the longitudinal beam 2602 (see, for example, Fig. 27 In addition to thermoplastic injection molding materials (e.g., nylon and reinforced nylon), other thermoplastic materials such as thermoplastic polyurethane (TPU) may have applications in wear-resistant covering 2502 (e.g., see Fig.25 )'s advantageous properties. TPU materials can be polyester-based or polyether-based. In contrast to thermosetting polymers, which typically include liquid materials that chemically react and solidify at temperature, the use of thermoplastics is generally simpler and can be provided, for example, by melting a homogeneous material (usually in the form of solid particles) and then injection molding the molten material. Not only are the physical properties of thermoplastics desirable for vibratory screening applications, but the use of thermoplastic liquids provides an easier manufacturing process. The use of thermoplastic materials provides excellent flexural and bending fatigue strength. This material is ideal for components that are subject to intermittent heavy loads or constant heavy loads, such as encountered in vibrating screens used on vibrating screening machines.

[0143] Because the vibrating screening machine is in motion, the low coefficient of friction of the thermoplastic injection molded material provides the desired wear characteristics. In fact, the wear resistance of certain thermoplastics is better than many metals. The use of thermoplastics also provides resistance to stress cracking, aging, and extreme weathering. The heat deformation temperature of thermoplastics is about 200°F. With the addition of glass fibers, this temperature can be increased to about 250°F, about 300°F, or more. Glass fibers can further increase rigidity, characterized by a flexural modulus from about 400,000 PSI to over about 1,000,000 PSI. These properties are desirable for the environments encountered when using a vibrating screen on a vibrating screening machine under the harsh conditions encountered in the field. In additional embodiments, other (e.g., synthetic) materials can be used for the wear-resistant cover 2502 (e.g., see Fig.25 ), provided that such materials are hydrophobic and include other desirable properties, such as abrasion resistance, puncture / tear resistance, and wear resistance.

[0144] Fig.28 A top perspective view of an uncovered insulating stringer 2602 is shown according to an exemplary embodiment of the present disclosure. Stringer 2602 is shown as a single structure, which is referenced from above. Figures 24 to 27 As shown, the longitudinal beam 2602 may include shell structures 2702a, 2702b, and 2702c, which may be configured to receive fasteners such as bolts or screws, as described below with reference to Fig.30 As described above, the stringers may be constructed from a variety of materials, including nylon, fiber (eg, carbon fiber, fiberglass) reinforced nylon, and other thermoplastics.

[0145] Fig.29 26 shows a side perspective view of an uncovered isolation stringer 2602 having a convex shape according to an exemplary embodiment of the present disclosure. Fig.28 As shown, the longitudinal beam 2602 is a single structure and can be Figures 24 to 27 As described above (and referred to below) Fig.30 2702a, 2702b, and 2702c may be configured to accommodate fasteners, such as bolts or screws. Stringer 2602 is shown as having a convex curved support structure 2902. Such a convex curved support structure 2902 may be configured to support a screen structure under tension. In this example, support structure 2902 may have a conical or pyramidal cross-sectional shape, thereby providing a mating surface having a smaller area than the base area of ​​stringer 2602 (e.g., see Fig.28). Other stringer structures may also include other support structure shapes, such as straight, concave, etc. Other embodiments may include stringers 2602 having other shapes, including stringers having circular cross-sections, triangular cross-sections, rectangular cross-sections, square cross-sections, hexagonal cross-sections, etc., as required for a given application.

[0146] Fig.30 A bottom perspective view of an uncovered isolation stringer 2602 having a convex shape is shown according to an exemplary embodiment of the present disclosure. The figure shows a flat bottom surface 3002 of the stringer 2602, which can be configured to be mounted on a corresponding flat support structure of a vibrating screening machine, such as a rib structure, as described in more detail above. In other embodiments, the surface 3002 can have other shapes, including curved shapes that can be concave or convex. Fig.30 Also shown are holes 3004a, 3004b, and 3004c, which can be configured to receive fasteners such as screws or bolts. For example, the holes 3004a, 3004b, and 3004c can be threaded and can pass through the bottom surface 3002 of the longitudinal beam 2602 into the shell structure 2702a, 2702b, and 2702c, thereby providing structural support for the fasteners that can be installed in the holes 3004a, 3004b, and 3004c.

[0147] Fig.31 A top perspective view of a wear-resistant cover 2502 of a longitudinal beam according to an exemplary embodiment of the present invention is shown. The wear-resistant cover 2502 is shown as a single structure, which is referenced from above. Figures 24 to 27 2602 of the vibrating screening machine described above. The wear-resistant cover 2502 is shown as having a curved surface 3102, which is configured to cover and protect the convex curved support structure 2902 of the longitudinal beam 2602 described above. As described above, the wear-resistant cover 2502 is configured to snap onto the longitudinal beam 2602 and closely conform to the shape of the longitudinal beam 2602 to reduce or eliminate any vibration or relative movement between the longitudinal beam 2602 and the wear-resistant cover 2502. In this way, the wear-resistant cover 2502 forms a wear-resistant cover, and the screen or screen assembly can be installed on the wear-resistant cover. Such a wear-resistant cover 2502 can be replaceable and can provide an ideal shape for mounting screens and screen assemblies.

[0148] Fig.32 A side perspective view of a wear-resistant cover 2502 of a longitudinal beam according to an exemplary embodiment of the present invention is shown. As shown, the wear-resistant cover 2502 includes the curved surface 3102 described above. The wear-resistant cover 2502 also includes a flat edge portion 3202 and a flat bottom portion 3204. Each of the features 3102, 3202, and 3204 mirrors the above referenced Figures 28 to 30Similar features of the described stringer 2602. In addition, the wear-resistant cover 2502 is made of a wear-resistant flexible material, which can be configured to be easily installed on and removed from the stringer 2602.

[0149] Fig.33 A bottom perspective view of a wear-resistant cover 2502 for a longitudinal beam according to an exemplary embodiment of the present invention is shown. As shown, the wear-resistant cover 2502 includes a linear groove and three voids 3304a, 3304b and 3304c. The linear groove 3302 can be configured to accommodate and fit the above reference Figures 28 to 30 2602. In addition, the voids 3304a, 3304b, and 3304c can be configured to be received and assembled on the shell structures 2702a, 2702b, and 2702c. In this way, the wear-resistant cover 2502 can be configured to be assembled on the longitudinal beam 2602 (for example, see Figures 28 to 30 ) and closely conform to the structural features of the stringer 2602. In this way, the wear-resistant cover 2502 can be maintained in place and resist movement / vibration relative to the stringer 2602 during operation of the vibrating screening machine. Thus, during operation of the vibrating screening machine, the wear-resistant cover 2502 provides wear and scratch resistance to the removable stringer 2602. As described above, the wear-resistant cover 2502 can also be periodically replaced as needed due to normal wear.

[0150] Fig.34 A side perspective view of an uncovered insulation stringer 3400 having a concave shape is shown according to an exemplary embodiment of the present disclosure.

[0151] refer to Fig.28 , 29 and 30, the longitudinal beam 3400 is shown as a single structure, which is referenced from above Figures 24 to 27 The vibrating screening machine described above (and referenced below) is removed. Fig.35 3400 ). As further described, the shell structures 2702a, 2702b, and 2702c can be configured to accommodate fasteners, such as bolts or screws. The longitudinal beam 3400 is shown as having a concave curved support structure 3402. Such a concave curved support structure 3402 can be configured to support the screen structure under compression. In this example, the support structure 3402 can have a conical or pyramidal cross-sectional shape, thereby providing a mating surface having an area less than the base area of ​​the longitudinal beam 3400. Other longitudinal beam structures can also include other support structure shapes, such as straight, etc. Other embodiments can include longitudinal beams 3400 having other shapes, including longitudinal beams having circular cross-sections, triangular cross-sections, rectangular cross-sections, square cross-sections, hexagonal cross-sections, etc., as required for a given application.

[0152] Fig.35 A bottom perspective view of an uncovered isolation stringer 3400 having a concave shape is shown according to an exemplary embodiment of the present disclosure. The figure shows a flat bottom surface 3502 of the stringer 3400, which can be configured to be mounted on a corresponding flat support structure of a vibrating screening machine, such as a rib structure, as described in more detail above. In other embodiments, the surface 3502 can have other shapes, including a curved shape that can be concave or convex. Fig.35 Also shown are holes 3504a, 3504b, and 3504c, which can be configured to receive fasteners such as screws or bolts. For example, the holes 3504a, 3504b, and 3504c can be threaded and can pass through the bottom surface 3502 of the longitudinal beam 3400 into the shell structure 2702a, 2702b, and 2702c, thereby providing structural support for the fasteners that can be installed in the holes 3504a, 3504b, and 3504c.

[0153] Fig.36 A side perspective view of an uncovered isolation stringer 3600 having a straight shape is shown according to an exemplary embodiment of the present disclosure. Figure 28 to Figure 35 Likewise, stringer 3600 is shown as a single structure that can be Figure 24 to Figure 27 As described above (and further referenced below) Fig.37 ), the shell structures 2702a, 2702b and 2702c can be configured to accommodate fasteners, such as bolts or screws. The longitudinal beam 3600 is shown as having a straight curved support structure 3602. This straight support structure 3602 can be configured to support the screen structure under tension, compression, or in a relaxed configuration without tension or compression. In this example, the support structure 3602 can have a conical or pyramidal cross-sectional shape, thereby providing a mating surface with an area less than the base area of ​​the longitudinal beam 3600. Other longitudinal beam structures can also include other support structure shapes. Depending on the needs of a given application, other embodiments may include longitudinal beams 3600 having other shapes, including longitudinal beams having a circular cross-section, a triangular cross-section, a rectangular cross-section, a square cross-section, a hexagonal cross-section, etc.

[0154] Fig.37 A bottom perspective view of an uncovered isolation stringer 3600 having a straight shape is shown according to an exemplary embodiment of the present disclosure. The figure shows a flat bottom surface 3702 of the stringer 3600, which can be configured to be mounted on a corresponding flat support structure of a vibrating screening machine, such as a rib structure, as described in more detail above. In other embodiments, the surface 3702 can have other shapes, including curved shapes that can be concave or convex. Fig.37Also shown are holes 3704a, 3704b, and 3704c, which can be configured to receive fasteners such as screws or bolts. For example, the holes 3704a, 3704b, and 3704c can be threaded and can pass through the bottom surface 3702 of the longitudinal beam 3600 into the shell structure 2702a, 2702b, and 2702c, thereby providing structural support for the fasteners that can be installed in the holes 3704a, 3704b, and 3704c.

[0155] Refer to above Figures 34 to 37 Each of the longitudinal beams 3400 and 3600 described respectively may also be provided with a wear-resistant covering, as described above with reference to Fig.31 and 32 In each case, a corresponding wear-resistant covering may be provided, which has a shape consistent with the corresponding stringer. For example, a stringer 3400 having a concave shape may be provided with a wear-resistant covering having a corresponding concave shape (not shown). Similarly, a stringer 3600 having a straight shape may be provided with a wear-resistant covering having a corresponding straight shape (not shown).

[0156] Unless specifically stated otherwise or otherwise understood in the context of use, conditional language such as "can," "may," "might," or "could" is generally intended to convey that certain embodiments may include, while other embodiments may include: that an embodiment does not include certain features, elements, and / or operations. Thus, such conditional language is generally not intended to imply that one or more embodiments require features, elements, and / or operations in any way, or that one or more embodiments must include logic for deciding, with or without user input or prompting, whether such features, elements, and / or operations are included in any particular embodiment or will be performed in any particular embodiment.

[0157] Although embodiments of the present disclosure are described with reference to various embodiments, it should be noted that these embodiments are illustrative and the scope of the present disclosure is not limited to these embodiments. It will be appreciated by those of ordinary skill in the art that many further combinations and arrangements of the disclosed features are possible. Therefore, various modifications may be made to the present disclosure without departing from the scope or spirit of the present disclosure. Additionally or alternatively, other embodiments of the present disclosure may be apparent by considering the specification and drawings and the practice of the present disclosure as presented herein. The examples presented in the specification and drawings are illustrative and non-restrictive. Although specific terms are employed herein, they are used only in a general and descriptive sense, and not for the purpose of limitation.

Claims

1. A vibrating screening machine, characterized in that: include: one or more screen assemblies; a plurality of injection molded removable support structures configured to provide mechanical support to the one or more screen assemblies; as well as A plurality of removable wear-resistant covers are mounted on corresponding removable support structures to provide wear and abrasion resistance to the removable support structures, wherein the wear-resistant covers are configured to snap onto the removable support structure and closely conform to the shape of the removable support structure and cover the top and sides of the removable support structure, and each wear-resistant cover is made of a flexible material so that the wear-resistant cover can be removed from the removable support structure by hand without the need for tools.

2. The vibrating screening machine according to claim 1, characterized in that: in, The detachable support structure includes one or more of plastic, metal and composite materials.

3. The vibrating screening machine according to claim 1, characterized in that: in, The removable support structure comprises nylon.

4. The vibrating screening machine according to claim 3, characterized in that: in, The removable support structure comprises fiber reinforced nylon.

5. The vibrating screening machine according to claim 4, characterized in that: in, The removable support structure comprises carbon or graphite.

6. The vibrating screening machine according to claim 1, characterized in that: in, The removable support structure has a concave shape and is configured to mechanically support the screen assembly while being held in a compressed state.

7. The vibrating screening machine according to claim 1, characterized in that: in, The removable support structure has a convex shape and is configured to mechanically support the screen assembly under tension.

8. The vibrating screening machine according to claim 1, characterized in that: in, The removable support structure is configured to be removably secured to the screening machine.

9. The vibrating screening machine according to claim 1, characterized in that: in, The wear resistant covering comprises thermoplastic polyurethane (TPU).

10. The vibrating screening machine according to claim 1, characterized in that: in, The wear-resistant cover and the removable support structure each have a conical or pyramidal cross-sectional shape.

11. The vibrating screening machine according to claim 1, characterized in that: in, The wear resistant covering is made of a material that provides scratch resistance, tear resistance, and puncture resistance.

12. The vibrating screening machine according to claim 1, characterized in that: The wear-resistant covering includes fiberglass.

13. The vibrating screening machine according to claim 1, characterized in that: Each wear-resistant cover is configured to cover a portion of a removable support structure to which it is mounted, the portion of the removable support structure providing support for a corresponding screen assembly.

14. A method for manufacturing a detachable support structure for a vibrating screening machine, characterized in that: The method comprises: injection molding the removable support structure as a unitary structure, wherein the removable support structure is configured to be removably secured to a vibrating screening machine and provide mechanical support for one or more screen assemblies of the vibrating screening machine; and The wear-resistant covering is made of a flexible material, the wear-resistant covering is configured to snap onto the removable support structure and closely conform to the shape of the removable support structure and cover the top and sides of the removable support structure, and the wear-resistant covering is further configured so that the wear-resistant covering can be removed from the removable support structure by hand without the need for tools.

15. The method according to claim 14, characterized in that The detachable support structure further comprises one or more of thermoplastics, nylon, carbon and graphite.

16. The method according to claim 14, characterized in that Wherein the removable support structure has a concave or convex shape configured to mechanically support the screen assembly held in compression or tension, respectively.

17. The method according to claim 14, characterized in that Wherein the wear-resistant cover and the removable support structure each have a conical or pyramidal cross-sectional shape.

18. The method according to claim 14, characterized in that The wear-resistant covering is made of a material that provides scratch resistance, tear resistance and puncture resistance.

19. The method according to claim 14, characterized in that The wear-resistant covering includes fiberglass.

20. A detachable support structure for a vibrating screening machine, characterized in that: include: a single removable support structure comprising one or more of plastic, metal, and a composite material; as well as wear-resistant coverings; wherein the removable support structure is configured to be removably secured to the vibrating screening machine and to provide mechanical support for one or more screen assemblies of the vibrating screening machine, and The wear-resistant cover is made of a flexible material and is configured to snap onto the removable support structure and closely conform to the shape of the removable support structure and cover the top and sides of the removable support structure, wherein the wear-resistant cover provides wear resistance for the removable support structure and is configured so that the wear-resistant cover can be removed from the removable support structure by hand without the need for tools.

21. The detachable support structure according to claim 20, characterized in that: in, The removable support structure also includes one or more of thermoplastics, nylon, carbon, and graphite.

22. The detachable support structure according to claim 21, characterized in that: in, The removable support structure also includes glass fiber or carbon fiber reinforced nylon.

23. The detachable support structure according to claim 20, characterized in that: in, The removable support structure has a concave or convex shape configured to mechanically support the screen assembly held in compression or tension, respectively.

24. The detachable support structure according to claim 20, characterized in that: in, The wear resistant covering also includes a hydrophobic wear resistant material.

25. The detachable support structure according to claim 20, characterized in that: in, The wear resistant cover also includes thermoplastic polyurethane (TPU).

26. A method for screening materials, characterized in that: The method comprises: Installing a removable support structure on a vibrating screening machine; installing a wear-resistant covering on the removable support structure, wherein the wear-resistant covering is configured to snap onto the removable support structure and closely conform to the shape of the removable support structure and cover the top and sides of the removable support structure, and the wear-resistant covering is made of a flexible material so that the wear-resistant covering can be removed from the corresponding removable support structure by hand without the need for tools; installing the screen assembly on the vibrating screening machine such that the screen assembly is supported by the overlying removable support structure; and screening the material.

27. The method according to claim 26, characterized in that in, Each removable support structure is a single injection molded part.

28. The method according to claim 26, characterized in that in, The removable support structure also includes one or more of thermoplastics, nylon, carbon, and graphite.

29. The method according to claim 28, characterized in that in, The removable support structure also includes glass fiber or carbon fiber reinforced nylon.

30. The method according to claim 26, characterized in that in, The removable support structure has a concave or convex shape configured to mechanically support the screen assembly held in compression or tension, respectively.

31. The method according to claim 26, characterized in that in, The wear resistant covering also includes a hydrophobic wear resistant material.

32. The method according to claim 31, characterized in that in, The wear resistant cover also includes thermoplastic polyurethane (TPU).

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