Disc screen with screen roller active cleaning function

Abstract

The utility model relates to a disk screen with a screen roller active cleaning function, which comprises a cleaning knife roller and a screen roller, the cleaning knife roller is parallel to the screen roller, a plurality of scraper groups are arranged in the circumferential direction of the cleaning knife roller at intervals, each scraper group comprises a plurality of scrapers arranged at intervals, and the scrapers are inserted between adjacent toothed plates of the screen roller. According to the vibrating screen, the technical problem that in the prior art, the screen roller and the cleaning scraper need to be manually cleaned at regular intervals so as to prevent sundries from blocking gaps between toothed plates of the screen roller and abrading the toothed plates can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of garbage sorting and processing, and in particular relates to a disc screen with a screen roller active cleaning function. Background Art

[0002] The focus of old landfill management is shifting from informal landfills to sanitary landfills, and the management process is also changing from the original "sealing" to "screening + resource utilization". Garbage screening and disposal is an important process method to achieve the reduction, resource utilization and harmlessness of stale garbage. As the main sorting equipment for garbage screening, the disc screen can achieve high screening efficiency and stable screening quality. During the screening process of the disc screen, the humus in the garbage will adhere to the screen roller of the disc screen equipment and fill the gaps between the tooth plates on the screen roller. The humus attached to the screen roller will cause friction on the tooth plates on the adjacent screen rollers during the rotation of the screen roller. Long-term friction will cause the tooth plates to become shorter and the screen hole size to become larger, reducing the quality of garbage sorting. When the tooth plates are worn to a certain extent, the tooth plates of the screen rollers need to be replaced as a whole.

[0003] At present, the cleaning device of the disc screen roller is installed on the crossbeam of the disc screen frame. The cleaning scraper is inserted between the adjacent tooth plates on the screen roller, and a certain small distance is kept between the screen roller. During the rotation of the screen roller, the cleaning scraper scrapes off the humus soil adhering between the adjacent tooth plates on the screen roller, plays the role of cleaning the screen roller and slows down the wear of the tooth plates. During the garbage sorting process, some fiber filaments will carry humus soil and hang on the cleaning scraper, blocking the gap between the cleaning scraper and the screen roller. If it is not cleaned in time, the fiber filaments mixed with humus soil will wear the tooth plates on the screen roller. As the humidity of the humus soil decreases, the wear will increase accordingly. Utility Model Content

[0004] In view of the various deficiencies in the prior art, a disc screen with an active cleaning function for the screen roller is proposed to solve the technical problem that the prior art requires manual regular cleaning of the screen roller and the cleaning scraper to prevent debris from clogging the gap between the screen roller teeth and wearing the teeth.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A disc screen with an active cleaning function of a screen roller comprises a cleaning knife roller and a screen roller, wherein the cleaning knife roller is parallel to the screen roller, a plurality of scraper groups are arranged at circumferential intervals on the cleaning knife roller, the scraper group comprises a plurality of scrapers arranged at intervals, the scrapers are inserted between adjacent tooth plates of the screen roller, the cleaning knife roller is located below the screen roller, and is transmission-connected to the screen roller to realize synchronous rotation of the cleaning knife roller and the screen roller.

[0007] The technical solution is further configured as follows: a scraper frame is provided on the cleaning blade roller, the scrapers are evenly and detachably mounted on the scraper frame, and the spacing between adjacent scrapers is equal to the spacing between adjacent tooth plates.

[0008] The technical solution is further configured such that the scraper holder is symmetrically arranged around the central axis of the cleaning blade roller, the blade of the scraper is inserted between adjacent tooth plates, and the blade is configured as a symmetrical structure.

[0009] The technical solution is further configured that a positioning plate is provided on the scraper frame, and a positioning groove for installing the scraper is formed on the positioning plate.

[0010] The technical solution is further configured such that a spacer is provided between adjacent tooth plates of the same screen roller, and the tooth plates of adjacent screen rollers are arranged in a staggered manner.

[0011] The technical solution is further configured as follows: along the running direction of the disc screen, a plurality of cleaning knife rollers are arranged at intervals, and the plurality of cleaning knife rollers are sequentially transmission-connected, one of the cleaning knife rollers serves as an active cleaning knife roller and is transmission-connected to the screen roller, and the remaining cleaning knife rollers serve as driven cleaning knife rollers.

[0012] The technical solution is further configured as follows: the screen roller includes an active screen roller and a driven screen roller which are transmission-connected. Along the running direction of the disc screen, a plurality of the driven screen rollers are arranged at intervals, and the plurality of the driven screen rollers are transmission-connected in sequence. The active cleaning knife roller is transmission-connected to one of the driven screen rollers.

[0013] The technical solution is further configured as follows: the active screen roller and the driven screen roller are both provided with a first sprocket, the active cleaning knife roller is provided with a second sprocket and a third sprocket, the driven cleaning knife roller is provided with a fourth sprocket, the first sprocket is transmission-connected with the second sprocket, and the sprocket pitches of the two are equal, the number of teeth of the second sprocket is smaller than the number of teeth of the first sprocket, and the third sprocket is transmission-connected with the fourth sprocket, and the sprocket pitches and the number of teeth of the two are equal.

[0014] The beneficial effects of the utility model are:

[0015] By setting up a transmission connection between the cleaning knife roller and the screen roller, there is no need to add a power output device to the cleaning knife roller separately. Only one power output device is needed to provide power output, so that the cleaning knife roller and the screen roller can rotate synchronously. The scraper removes humus, slag and other debris attached to the screen roller, thereby reducing manual cleaning time and extending the effective working time of the equipment. At the same time, the rotating cleaning knife roller can shake off the fiber filaments containing humus in the garbage hanging on the scraper, thereby avoiding the fiber filaments blocking the gap between the scraper and the tooth plate and reducing the wear on the tooth plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of a disk screen with an active cleaning function of a screening roller in an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a sectional view taken along line B-B in

[0018] Figure 3 is Figure 1 a sectional view taken along line C-C in

[0019] Figure 4 is Figure 1 a sectional view taken along line F-F in

[0020] Figure 5 It is a schematic diagram of the driving connection between the screening roller and the cleaning knife roller in an embodiment of the present utility model;

[0021] Figure 6 is Figure 4 a partial schematic diagram at position A in

[0022] Figure 7 It is a schematic diagram of the active screening roller in an embodiment of the present utility model;

[0023] Figure 8 It is a schematic diagram of the active cleaning knife roller in an embodiment of the present utility model.

[0024] In the drawings: 100, screening frame; 200, power output device; 300, active screening roller; 301, active screening roller shaft; 302, first sprocket; 303, toothed plate; 304, spacer sleeve; 305, pressing plate; 306, nut; 400, driven screening roller; 401, driven screening roller shaft; 500, active cleaning knife roller; 501, active cleaning knife roller shaft; 502, second sprocket; 503, third sprocket; 504, scraper; 505, scraper holder; 506, positioning plate; 600, second chain; 700, driven cleaning knife roller; 701, driven cleaning knife roller shaft; 702, fourth sprocket; 800, first chain; 900, third chain. Detailed implementation manners

[0025] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the drawings of the present utility model. Based on the embodiments in this application, other similar embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "left", "right", etc., are only with reference to the directions in the drawings. Therefore, the directional terms used are for illustration rather than for limiting the present invention.

[0026] The present utility model will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0027] According to an embodiment of the present utility model, there is provided a disc screen with an active cleaning function of a screening roller. Please refer to Figures 1 to 8 , which includes a cleaning knife roller and a screening roller. The cleaning knife roller is parallel to the screening roller. A plurality of scraper groups are circumferentially spaced on the cleaning knife roller. Each scraper group includes a number of scrapers 504 spaced apart. The scraper 504 is inserted between adjacent tooth plates 303 of the screening roller. The cleaning knife roller is located below the screening roller and is drivingly connected to the screening roller to achieve synchronous rotation of the cleaning knife roller and the screening roller.

[0028] It should be noted that by setting the cleaning knife roller to be drivingly connected to the screening roller, there is no need to separately add a power output device to the cleaning knife roller. Only one power output device is required to provide power output, and synchronous rotation of the cleaning knife roller and the screening roller can be achieved. The scraper 504 removes sundries such as humus soil and muck attached to the screening roller, reduces manual cleaning time, and extends the effective working time of the equipment. At the same time, the rotating cleaning knife roller can shake off the fiber filaments with humus soil in the garbage hanging on the scraper 504, avoiding the gap between the scraper 504 and the tooth plate 303 being blocked by the fiber filaments and reducing the wear of the tooth plate 303.

[0029] In the disc screen with an active cleaning function of a screening roller in this embodiment, please refer to Figure 6 and Figure 8 , a scraper holder 505 is provided on the cleaning knife roller. The scraper 504 is evenly and detachably mounted on the scraper holder 505. The distance between adjacent scrapers 504 is equal to the distance between adjacent tooth plates 303.

[0030] It should be noted that the scraper holder 505 is arranged along the central axis of the cleaning knife roller. The scraper holder 505 and the scraper 504 are detachably connected by bolts, which is convenient for replacing the scraper 504 when it is worn. At the same time, the distance between adjacent scrapers 504 is equal to the distance between adjacent tooth plates 303 to avoid interference.

[0031] In the disc screen with an active cleaning function of a screening roller in this embodiment, please refer to Figure 6 and Figure 8 , the scraper holders 505 are symmetrically arranged around the central axis of the cleaning knife roller. The cutting edge of the scraper 504 is inserted between adjacent tooth plates 303, and the cutting edge is arranged in a symmetric structure.

[0032] It should be noted that the scraper frame 505 is symmetrically mounted on the cleaning blade roller, and the scraper frame 505 is mounted on the cleaning blade roller by bolts, and the two ends are positioned using positioning blocks after assembly. The blades are arranged in a symmetrical structure and are respectively located at the two ends of the scraper 504. When the blade at one end is worn, the blade at the other end can be replaced and reused.

[0033] In the disc screen with active cleaning function of the screen roller of this embodiment, please refer to Figure 6 and Figure 8 The scraper frame 505 is provided with a positioning plate 506 , and the positioning plate 506 is provided with a positioning groove for installing the scraper 504 .

[0034] It should be noted that a positioning plate 506 is installed on the scraper frame 505, and the scraper 504 is placed in the positioning groove of the positioning plate and fixed to the scraper frame 505 by bolts. When the scraper 504 is worn, the bolts of the scraper 504 are removed, and a new scraper is replaced, and the new scraper is positioned through the positioning groove. The position of the new scraper after installation is consistent with the installation position of the original scraper, and the gap between the scraper 504 and the tooth plate 303 is also consistent.

[0035] In the disc screen with active cleaning function of the screen roller of this embodiment, please refer to Figure 1 and Figure 7 A spacer 304 is arranged between adjacent tooth plates 303 of the same screen roller, and the tooth plates 303 of adjacent screen rollers are arranged alternately.

[0036] It should be noted that the screen roller is evenly installed with spacers 304 and tooth plates 303, one end of the spacers 304 and tooth plates 303 are compacted with a pressing plate 305, fastened with nuts 306 and prevented from loosening by double nuts, and the screen roller bearing seats are installed at both ends and fixed to the screen frame 100 by bolts. The spacers 304 keep the spacing between the tooth plates 303 consistent, thereby improving the installation accuracy of the tooth plates 303.

[0037] In the disc screen with active cleaning function of the screen roller of this embodiment, please refer to Figures 1 to 8 Along the running direction of the disc screen, a number of cleaning knife rollers are arranged at intervals, and the cleaning knife rollers are sequentially connected in transmission. One of the cleaning knife rollers serves as an active cleaning knife roller 500 and is connected in transmission with the screen roller, and the remaining cleaning knife rollers serve as driven cleaning knife rollers 700.

[0038] It should be noted that the cleaning knife roller and the screen roller are arranged correspondingly and are located directly below the screen roller. The screen roller drives the active cleaning knife roller 500 and the driven cleaning knife roller 700 to rotate synchronously. Since the scraper 504 is embedded in the gap between adjacent tooth plates 303, the scraper 504 can clean the gap between the tooth plates 303 during rotation.

[0039] Specifically, the structures of the active cleaning knife roller 500 and the driven cleaning knife roller 700 are the same. Taking the active cleaning knife roller 500 as an example, it includes an active cleaning knife roller shaft 501. The scraper brackets 505 are symmetrically installed on the active cleaning knife roller shaft 501. A positioning plate 506 is installed on the scraper bracket 505. The scraper 504 is placed in the positioning groove and fixed to the scraper bracket 505 with bolts. Knife roller bearing seats are installed at both ends of the active cleaning knife roller shaft 501 and fixed to the sieve frame 100 with bolts.

[0040] In the disk sieve with the active cleaning function of the sieve roller in this embodiment, please refer to Figures 1 to 8 , the sieve roller includes a driving-connected active sieve roller 300 and a driven sieve roller 400. Along the running direction of the disk sieve, several driven sieve rollers 400 are arranged at intervals, and several driven sieve rollers 400 are sequentially driving-connected. The active cleaning knife roller 500 is driving-connected with one of the driven sieve rollers 400.

[0041] It should be noted that the active sieve roller 300 is driving-connected with the power output device 200 through a coupling to provide power for the disk sieve. Specifically, the structures of the active sieve roller 300 and the driven sieve roller 400 are the same. Taking the active sieve roller 300 as an example, it includes an active sieve roller shaft 301. Spacers 304 and toothed plates 303 are evenly installed on the active sieve roller shaft 301. One end compacts the spacer 304 and the toothed plate 303 with a pressing plate 305, fastens them with nuts 306 and adopts a double-nut method to prevent loosening. Sieve roller bearing seats are installed at both ends of the active sieve roller shaft 301 and fixed to the sieve frame 100 with bolts.

[0042] In the disk sieve with the active cleaning function of the sieve roller in this embodiment, please refer to Figures 1 to 8 , first sprockets 302 are provided on both the active sieve roller 300 and the driven sieve roller 400. A second sprocket 502 and a third sprocket 503 are provided on the active cleaning knife roller 500. A fourth sprocket 702 is provided on the driven cleaning knife roller 700. The first sprocket 302 is driving-connected with the second sprocket 502, and the chain pitch of both is equal. The number of teeth of the second sprocket 502 is less than that of the first sprocket 302. The third sprocket 503 is driving-connected with the fourth sprocket 702, and the chain pitch and the number of teeth of both are equal.

[0043] Specifically, the active screen roller shaft 301 and the driven screen roller shaft 401 are both provided with a first sprocket 302, the active cleaning blade roller shaft 501 is provided with a second sprocket 502 and a third sprocket 503, and the driven cleaning blade roller shaft 701 is provided with a fourth sprocket 702. The first sprocket 302 and the fourth sprocket 702 are both double-row gears, and the second sprocket 502 and the third sprocket 503 are both single-row gears. At the same time, the adjacent first sprockets 302 are connected by a first chain 800, the first sprocket 302 and the second sprocket 502 on the driven screen roller shaft 401 are connected by a second chain 600, and the third sprocket 503 and the fourth sprocket 702, and the adjacent fourth sprockets 702 are connected by a third chain 900.

[0044] When working, the power output device 200 acts as a driving unit, drives the active screen roller 300 to rotate through the coupling, drives the driven screen roller 400 to rotate synchronously through the first sprocket 302 and the first chain 800, and then drives the second chain 600, the second sprocket 502, the third sprocket 503, the third chain 900 and the fourth sprocket 702 to rotate. The difference in the number of teeth between the first sprocket 302 and the second sprocket 502 generates a speed difference between the screen roller and the cleaning knife roller. The cleaning knife roller will clean the materials adhered to the screen roller when it rotates one circle. Through the rapid rotation of the cleaning knife roller, the effect of surface cleaning can be achieved through multi-point cleaning.

[0045] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A disc screen with active cleaning function of screen roller, characterized in that: It includes a cleaning knife roller and a sieve roller, the cleaning knife roller is parallel to the sieve roller, a plurality of scraper groups are arranged at intervals in the circumferential direction of the cleaning knife roller, the scraper group includes a plurality of scrapers arranged at intervals, the scrapers are inserted between adjacent tooth plates of the sieve roller, the cleaning knife roller is located below the sieve roller, and is transmission-connected to the sieve roller to realize synchronous rotation of the cleaning knife roller and the sieve roller.

2. The disc screen with active cleaning function of the screen roller according to claim 1 is characterized in that: The cleaning blade roller is provided with a scraper frame, and the scrapers are evenly and detachably mounted on the scraper frame, and the spacing between adjacent scrapers is equal to the spacing between adjacent tooth plates.

3. The disc screen with active cleaning function of the screen roller according to claim 2 is characterized in that: The scraper holder is symmetrically arranged around the central axis of the cleaning blade roller, the blade of the scraper is inserted between adjacent tooth plates, and the blade is set to a symmetrical structure.

4. The disc screen with active cleaning function of the screen roller according to claim 2 or 3, characterized in that: The scraper frame is provided with a positioning plate, and the positioning plate is provided with a positioning groove for installing the scraper.

5. The disc screen with active cleaning function of the screen roller according to claim 1, characterized in that: A spacer is arranged between adjacent tooth plates of the same screen roller, and the tooth plates of adjacent screen rollers are arranged in a staggered manner.

6. The disc screen with active cleaning function of the screen roller according to claim 1, characterized in that: Along the running direction of the disc screen, a plurality of cleaning knife rollers are arranged at intervals, and the plurality of cleaning knife rollers are sequentially connected in transmission, one of which serves as an active cleaning knife roller and is connected in transmission to the screen roller, and the other cleaning knife rollers serve as driven cleaning knife rollers.

7. The disc screen with active cleaning function of the screen roller according to claim 6, characterized in that: The screen rollers include an active screen roller and a driven screen roller which are connected in transmission. Along the running direction of the disc screen, a plurality of driven screen rollers are arranged at intervals. The plurality of driven screen rollers are sequentially connected in transmission. The active cleaning knife roller is connected in transmission with one of the driven screen rollers.

8. The disc screen with active cleaning function of the screen roller according to claim 7, characterized in that: The active screening roller and the driven screening roller are both provided with a first sprocket, the active cleaning knife roller is provided with a second sprocket and a third sprocket, the driven cleaning knife roller is provided with a fourth sprocket, the first sprocket is connected to the second sprocket in driving connection, and the sprocket pitches of the two are equal, the number of teeth of the second sprocket is smaller than the number of teeth of the first sprocket, the third sprocket is connected to the fourth sprocket in driving connection, and the sprocket pitches and numbers of teeth of the two are equal.

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