Installing screens in a mobile multi-deck sorting machine

Abstract

The screen media of the mobile multi-deck screen is tensioned by a tensioner. When the screen media side tensioner (400) is attached to the mobile multi-deck sorting apparatus (100), tension links (250) laterally engage and tension the screen media (240) via at least two linear tension rods (410). An adjustment member (220) causes linear movement of each linear tension rod. Above the linear tension rods, the sides of the screen media are tensioned by the tension links. A retractor (510) disengages the tension links in response to loosening of the linear tension rods. A screen deck (112), a screen (110), a mobile multi-deck sorting apparatus, and a method for replacing screen media using a tensioner are also disclosed.

Description

[Technical Field]

[0001] The present invention relates generally to the mounting of screens in a mobile multi-deck sorting machine.

[0002] It should be noted that this section provides useful background information, but does not constitute an admission that the techniques described therein represent the state of the art.

[0003] Screens separate material into fractions of varying particle size distribution, generally rejecting oversized particles and accepting undersized particles. Screens use one or more screening media, such as punch plates or mesh, to separate the fractions.

[0004] When screen media is forced to vibrate to improve screening performance, it is subject to severe wear. For this reason, industrial screens typically use wear-resistant screen media. Screen media can usually be replaced with new media when necessary. Installation of screen media typically involves a tensioning system in which the screen media is pressed between the screen frame. For this purpose, there are two types of tensioning systems: end tensioning systems and side tensioning systems.

[0005] WO9426427A1 discloses an end tensioning system in which tightening bolts are used to tension the screen media using tension irons at the leading and trailing ends of the screen. For the screen media between these end media, tightening screws are moved to the ends of the screen body where they are easily accessible. From these tightening screws, force is transferred to the intermediate screen media using extension rods. In this example, three screen decks are provided, and the screen media on each deck not only differ from deck to deck, but also have different flow directions. On each deck, the length of the screen media increases toward the outlet end.

[0006] Mobile multi-deck screens must balance the conflicting needs of reducing the overall height of the screening device so it can move under road and railroad bridges while also facilitating screen media replacement. It is also desirable for screen media replacement to be possible on only one side. Modern screen media are often too heavy to handle by hand, weighing hundreds of kilograms, and therefore require the use of lifting equipment for removal and insertion. It is desirable for the fastening system to be able to easily engage and disengage the screen media without necessarily requiring access to the screening device. For example, referring to Figure 3 of WO9426427A1, to install and remove the screen media, the fastening screws 30 must be operated with one tool via the nuts outside the frame and the bolt heads with another tool inside the frame. Furthermore, manual installation is required to align the screen media with its fixed tension irons and bolt-moving tension irons. If the hooked ends of the screen media become stuck (due to rust or other factors) during removal, the tension irons must be manually separated from the screen media within the screening device. Abstract

[0007] The accompanying claims define the scope of protection. Examples and technical descriptions of devices, products and / or methods in the description and / or drawings that are not covered by the claims are presented as background or examples helpful in understanding the present invention, rather than as embodiments of the present invention.

[0008] According to a first exemplary aspect of the present invention, there is provided a screen media side tensioner for a mobile multi-deck sorting machine, the tensioner comprising: At least two linear tension rods; a tension link configured to engage a lateral side of the screen media and tension the screen media in response to tightening of the linear tension rod when the screen media side tensioner is attached to the mobile multi-deck sorting device; an adjustment member provided on each of the at least two linear tension rods, the adjustment member configured to cause linear movement of the linear tension rod; wherein the tension link is configured to tension a side of the screen media above the two linear tension rods.

[0009] The at least two linear tension rods may be threaded. The adjustment member may include a nut configured to, when tightened, create an inward force against the frame of the mobile multi-deck sorting machine, thereby creating an outward force against the linear tension rods. The adjustment member may include a bolt head.

[0010] The screen media side tensioner may further include a retractor configured to retract the tension link so that the tension link disengages from the screen media in response to loosening of the at least two linear tension rods. The adjustment member may move the tension link toward the frame to tension the engaged screen media. The retractor may be capable of retracting and returning the tension link.

[0011] The retractor may include a retraction component on each of the at least two linear tension rods. The retraction component may include a resilient biasing element. The retraction component may include a spring. The retraction component may include an inward force relay element configured to induce a retraction force on the tension link when the linear tension rod is released. The retraction component may include a nut on the linear tension rod between the tension link and the adjustment component.

[0012] The screen media side tensioner may further include a guide configured to guide the linear tension rod. The guide may have a bearing. The guide may be formed around the linear tension rod. The guide may be spaced apart from the linear tension rod. The guide may be directional-locking and may be rectangular, oval, or other non-circular. The screen media side tensioner may have two guides at each end of the tension link. The two guides may be located less than 1%, 5%, 10%, or 20% of the length of the tension link from the end of the tension link.

[0013] The tension link may be configured to tension an entire side of the screen media. The tension link may be configured to at least partially tension two different screen media. The tension link may be configured to tension an entire side of one screen media and at least a portion of a side of another screen media. Alternatively, the tension link may be configured to tension a portion of a side of the screen media, which portion may be half.

[0014] According to a second exemplary aspect of the present invention, there is provided a screen deck for a mobile multi-deck sorting machine, the screen deck comprising: A side tensioner for a screen media according to the first exemplary concept; a frame for receiving the screen media side tensioner; Equipped with.

[0015] The screen deck may further comprise a screen media.

[0016] The screen deck may include a plurality of screen media. The screen deck may include a side tensioner for the screen media of the first exemplary understanding on at least one side of each of the plurality of screen media.

[0017] The frame may be configured to support multiple screen media of one screen deck, and the frame may be configured to receive a separate screen media tensioner for each screen media of the screen deck.

[0018] The mobile multi-deck sorting device may include two or more side tensioners for the screen media to apply tension to two or more corresponding different portions of one screen media.

[0019] One side of the screen media may be fixedly supported by the frame, and the opposite side of the screen media may be movably supported by the screen media side tensioner. Alternatively, two opposite sides of the screen media may be movably supported by separate screen media side tensioners of the first exemplary concept.

[0020] According to a third exemplary aspect of the present invention, there is provided a multi-deck screen of a mobile multi-deck sorting device, the multi-deck screen comprising: one or more screen decks of a second exemplary perspective; a screen body configured to support the one or more screen decks; Equipped with.

[0021] The screen body may be configured to support the one or more screen decks in two or more different positions or orientations. The screen body may include two or more sets of attachment points configured to attach the one or more screen decks in two or more different positions or orientations.

[0022] The multi-deck screen may further include a vibrator configured to enhance sieving.

[0023] The screen body may be configured to receive screen media tensioners for N first screen decks counting from top to bottom, where N may be equal to the number of screen decks, or N may be equal to the number of screen decks minus one.

[0024] All screen media on one screen deck may be the same size. Allowing the use of screen media of the same size can facilitate logistics and maintenance of the mobile multi-deck sorting equipment.

[0025] According to a fourth exemplary aspect of the present invention, there is provided a mobile multi-deck sorting machine, the machine comprising: A third exemplary view of a multi-deck screen; a moving platform configured to support the multi-deck screen; Equipped with.

[0026] The mobile multi-deck sorting apparatus may include a side plate. The side plate may be configured to inhibit spillage of material being sieved on a side tensioned by a screen media side tensioner. The side plate may include a sealing member configured to improve inhibition of leakage of material being sieved below the side plate. Alternatively or additionally, the screen media may include a sealing member configured to improve inhibition of leakage of material being sorted below the side plate. The side plate may be user-removable. The side plate may be removable without tools. The side plate may include a removable attachment mechanism. The attachment mechanism may include a magnet.

[0027] The side plate may be configured to provide access to the adjustment member. The side plate may include one or more gaps or openings to provide access to the adjustment member.

[0028] The side plates may be movable away from the screen media to facilitate insertion or removal of the screen media. The side plates may be configured to remove the screen media in stages. For example, in one stage, the side plates are in a leak-proof configuration and loosening a linear tension rod may separate a partially stuck tension link from the screen media.

[0029] When the side plates are in the leak-proof configuration, the side plates may resist flexing of the screen media.

[0030] The mobile multi-deck sorting device may be self-propelled. The mobile multi-deck sorting device may be moved by wheels. The mobile multi-deck sorting device may be moved by tracks. Alternatively, the mobile multi-deck sorting device may be towable.

[0031] The frame may include an impact tool access opening for directing an impact through a rod to the tension link, which may allow a stuck tension link to be impacted away from the guide.

[0032] According to a fifth exemplary aspect of the present invention, there is provided a method for replacing screen media in a mobile multi-deck sorting machine, the method comprising: retracting tension links on the sides of the screen media by loosening linear tension rods; disengaging the screen media by retracting the tension link; removing the screen media from the tension link; placing new screen media having an engaging end on the mobile multi-deck screening device with the engaging end facing the tension link; tensioning at least two linear tension rods of the multi-deck screening device so that the engagement ends engage and the screen media is tensioned by the tension links; tensioning the at least two linear tension rods from outside the multi-deck sorting device; Includes:

[0033] The method may further include guiding the tension link to move along a linear track.

[0034] The method may further include sealing the screen media in response to tensioning the screen media.

[0035] According to a sixth exemplary aspect of the present invention, there is provided a mobile multi-deck sorting machine, the machine comprising: an adjustment member for retracting the tension links at the sides of the screen media by loosening the at least two linear tension rods; a retractor that retracts the tension link to release the engagement between the tension link and the screen media in order to remove the screen media when the screen media is disengaged from the tension link; a platform for receiving new screen media having an engaging end; With guides; Equipped with the guide and the tension link are configured to engage and apply tension to the new screen media when the at least two linear tension rods are tightened; The adjustment member is configured to apply tension to the at least two linear tension rods from outside the multi-deck sorting apparatus.

[0036] Although various aspects and embodiments of the present invention have been presented, they are not intended to limit the scope of the invention. These embodiments are merely used to illustrate specific aspects and steps that may be used to practice the present invention. Some embodiments may be presented only with reference to specific exemplary aspects of the invention. It should be understood that some embodiments may also be applicable to other embodiments. [Brief explanation of the drawings]

[0037] Some embodiments will now be described with reference to the accompanying drawings, in which: [Figure 1] FIG. 1 is a schematic diagram of a mobile multi-deck sorting device. [Figure 2] A three-dimensional view of the screen deck, showing one screen media. [Figure 3] A top view of a screen deck equipped with three screen media. [Figure 4] FIG. 10 is a three-dimensional view showing details of the side tensioner for the screen media. [Figure 5] FIG. 10 is another three-dimensional view showing details of the side tensioner for the screen media. [Figure 6] 10A and 10B illustrate an example sealing member. [Figure 7] 1 is a flowchart of a process for tensioning a screen media. Detailed explanation

[0038] 1 is a schematic diagram of a mobile multi-deck sorting plant 100. The plant 100 comprises a multi-deck sorting apparatus 110 having a plurality of screen decks 112, 114, and a mobile platform 120 having wheels 122 and tracks 124. The multi-deck sorting apparatus 110 further comprises a vibrator 116 and a body 118 that supports the screen decks 112, 114 and the vibrator 116.

[0039] FIG. 2 is a three-dimensional view of the screen deck 112. One screen medium 240 is depicted. The screen medium 240 has an engagement end 242 on its side, the outer diameter of which is hook-shaped. 50 wt % or more of the engagement end 242 may be steel, aluminum, or a composite material. FIG. 2 further illustrates a frame 210 and a plurality of adjustment members 220 for adjusting the linear tension rods (410 in FIG. 4), respectively.

[0040] Shown are a nut (here), side plate 230, and tension link 250 for relaying force from the plurality of tension rods 410 to engagement end 242. Force is relayed at the locations of the tension rods 410 and between the plurality of tension rods 410.

[0041] Figure 3 is a top view of the screen deck 112 equipped with three screen media 240. Figure 3 shows multiple (here, three) screen media 240 mounted adjacent to one another to cover the screen deck 112. To prevent oversized mineral matter from leaking between adjacent screen media 240, gaps between adjacent screen media 240 are sealed with gap strips (not shown). As can be better understood from Figure 5, these gap strips may have substantially the same longitudinal length as the screen media 240 so as to also seal gaps between adjacent screen media and the side plate 230.

[0042] FIG. 4 is a three-dimensional view showing details of the screen media side tensioner 400. The screen media side tensioner 400 includes an adjustment member 220, a linear tension rod 410, and a guide 420. The linear tension rod 410 is a member for moving the tension link 250 outward or inward to tighten or loosen the screen media 240. In FIG. 4, the linear tension rod 410 is depicted without the spring 510 depicted in FIG. 5. The guide 420 guides the tension link 250 to move along a substantially linear path, thereby maintaining the tension link in a position that engages with the engagement end 242 of the screen media when the screen media is installed.

[0043] 5 is another three-dimensional view showing the details of the screen media side tensioner 400. A spring 510 is depicted around the linear tension rod 410.

[0044] 6 illustrates an example sealing member 610. The sealing member 610 is attached to the side plate 520 such that, when tightened, the engagement edge 242 recesses the sealing member 610. The gap strip described in connection with FIG. 3 is also sealed by the sealing member 610.

[0045] In Figure 6, a D-seal is used as sealing member 610. Other forms of sealing members, such as a B-seal, can also be used, as can filled, compressible sealing members, such as foam seals. It is also possible to use a relatively rigid seal that essentially corresponds to that of Figure 6 but lacks the base that supports seal 610 to side plate 520.

[0046] 7 is a flow chart of a screen media tensioning process 700 for changing screen media in a mobile multi-deck sorting machine. The process includes:

[0047] 710. Retract the tension links on the sides of the screen media by loosening the linear tension rods.

[0048] 720. Retraction of the tension link disengages the screen media.

[0049] 730.Remove the screen media that has come off the tension link.

[0050] 740. Place new screen media with the engaging end into the multi-deck sorting device with the engaging end facing the tension link.

[0051] 750. Tensioning at least two linear tension rods of a multi-deck screening device so that the engagement ends engage and the screen media is tensioned by the tension links.

[0052] 760. At least two linear tension rods are tensioned from the outside of the multi-deck sorting device.

[0053] In some embodiments, the process 700 includes one or more of the following:

[0054] 770. Guide a tension link to move along a linear track.

[0055] 780. Sealing the screen media in response to tensioning the screen media.

[0056] Various embodiments have been described. The terms "comprises", "has", "comprises" and "includes" are to be interpreted in an open-ended manner and do not exclude the presence of other elements.

[0057] The above description provides a complete and informative description of the best mode presently contemplated by the inventors for carrying out the invention, by way of non-limiting examples of specific implementations and embodiments of the invention. However, as will be apparent to those skilled in the art, the details of the above-described embodiments do not limit the invention and may be implemented in other embodiments using equivalent means or combinations of various embodiments without departing from the characteristics of the invention.

[0058] Furthermore, features of the embodiments of the present invention disclosed above may be employed without the corresponding use of other features. Accordingly, the foregoing description should be considered as merely illustrative of the principles of the present invention, and not in limitation thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. 1. A side tensioner for a screen media for a mobile multi-deck sorting machine, comprising: at least two linear tension rods; a tension link configured to engage a lateral side of the screen media and tension the screen media in response to tightening of the linear tension rod when the screen media side tensioner is attached to the mobile multi-deck sorting device; an adjustment member provided on each of the at least two linear tension rods, the adjustment member configured to cause linear movement of the linear tension rod; Equipped with the tension link is configured to tension a side of the screen media above the two linear tension rods; The screen media side tensioner further includes a retractor configured to retract the tension link so that the tension link disengages from the screen media in response to loosening of the at least two linear tension rods. Side tensioner for screen media.

2. The side tensioner for screen media of claim 1 , further comprising a guide configured to guide the tension link.

3. 3. The side tensioner for a screen media according to claim 1 or 2, wherein the retractor is integrated with the at least two linear tension rods.

4. The side tensioner for screen media according to claim 1 , wherein the tension link is configured to apply tension to an entire side of the screen media.

5. The side tensioner for screen media according to claim 1 , wherein the tension link is configured to apply tension to a portion of a side of the screen media.

6. 1. A screen deck for a mobile multi-deck sorting machine, comprising: A side tensioner for a screen media according to any one of claims 1 to 5; a frame for receiving the screen media side tensioner; A screen deck equipped with:

7. The screen deck according to claim 6, wherein the frame is configured to movably support two opposing sides of the screen media using two side tensioners for the screen media according to any one of claims 1 to 5.

8. 1. A multi-deck screen for a mobile multi-deck sorting machine, comprising: one or more screen decks according to claim 7; a screen body configured to support the one or more screen decks; A multi-deck screen equipped with:

9. 9. The multi-deck screen of claim 8, wherein the screen body is configured to support the one or more screen decks in two or more different positions or orientations.

10. A mobile multi-deck sorting device, The multi-deck screen according to claim 8 or 9; a moving platform configured to support the multi-deck screen; A mobile multi-deck sorting device comprising:

11. 11. The mobile multi-deck sorting apparatus of claim 10, comprising side plates configured to close at least a portion of the sides of the multi-deck screen from material being sorted.

12. 12. The mobile multi-deck sorting machine of claim 11, wherein the side plates further comprise a removable attachment mechanism configured to allow the side plates to be attached and detached without tools.

13. 13. The mobile multi-deck sorting apparatus of claim 11 or 12, wherein the side plates further comprise sealing members configured to prevent spillage of the material being sorted, the sealing members configured to abut an edge of the screen media.

14. 1. A method for changing screen media in a mobile multi-deck sorting machine, comprising: retracting tension links on the sides of the screen media by loosening linear tension rods; disengaging the screen media by retracting the tension link in response to loosening at least two linear tension rods; removing the screen media from the tension link; placing new screen media having an engaging end on the mobile multi-deck screening device with the engaging end facing the tension link; tensioning at least two linear tension rods of the multi-deck screening device so that the engagement ends engage and the screen media is tensioned by the tension links; tensioning the at least two linear tension rods from outside the multi-deck sorting device; disengaging the screen media by retracting the tension link with a retractor in response to loosening at least two linear tension rods; A method comprising:

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