CN217190931U - Drum screen for sorting stale garbage - Google Patents

Abstract

The utility model relates to a drum sieve of old rotten rubbish of sorting, include: screening a screen; the screen is arranged on the drum screen support; the screen comprises a first type screen hole and a second type screen hole, the first type screen hole is closer to the feeding opening of the screen than the second type screen hole, and the aperture of the first type screen hole is larger than that of the second type screen hole. The application provides an improvement that drum sieve can be great is to the efficiency of stale rubbish screening to can alleviate the difficulty of present rubbish control.

Description

Drum screen for sorting stale garbage

Technical Field

The utility model relates to a waste sorting field relates to a drum sieve of old rotten rubbish of branch selection especially.

Background

Since the 70 s of the 20 th century, China gradually begins to adopt a landfill method to treat garbage, which has become a main garbage treatment mode in China to date, and since the 70 s, along with the progress of urbanization, a large amount of construction garbage and domestic garbage are generated, so that the garbage disposal by the landfill method still faces a plurality of outstanding problems: 1. the yield of the garbage is increased at a rate of 7-9% every year, and the floor area of a garbage landfill is more and more required; 2. the urbanization process causes the range of urban areas to be continuously expanded to peripheral areas, and suburban land prices to rapidly rise, so that the site selection of a landfill site is more and more difficult, and huge garbage output and increasingly anxious and insecure land resources are diverged; 3. the problem of rebuilding and reusing landfills has become more acute as the age of a large number of previously constructed landfills has reached or is about to reach. Therefore, the treatment work of the stale refuse in the refuse landfill is urgent.

After the garbage is buried for a long period of time, the garbage is fermented in soil to form stale garbage, the stale garbage is dug out and then screened, the garbage is classified according to material utilization categories, classified combustibles are used for burning power generation, humus can be used for cultivating urban landscape vegetation, and materials which are not suitable for utilization are finally buried. After treatment, more than 70% of the storage capacity of the refuse landfill can be recovered. Therefore, more and more groups and companies are invested in the research of the screening of the stale waste. However, the efficiency of the existing garbage screening device is too low, and the problems of garbage disposal are not solved.

SUMMERY OF THE UTILITY MODEL

To the technical problem who exists among the prior art, the utility model provides a rotary screen of old and useless rubbish of branch selection, include: screening a screen; the screen is arranged on the drum screen support; the screen comprises a first type screen hole and a second type screen hole, the first type screen hole is closer to the feeding opening of the screen than the second type screen hole, and the aperture of the first type screen hole is larger than that of the second type screen hole.

The trommel as described above, the screen further comprising a third type of aperture which is closer to the outlet of the screen than the second type of aperture.

The drum screen comprises a front support leg and a rear support leg, wherein the front support leg is close to a feeding hole of the screen, the rear support leg is close to a discharging hole of the screen, and the length of the front support leg is greater than that of the rear support leg.

The drum screen is arranged obliquely relative to the horizontal plane, and the inclination angle of the screen is 60-70 degrees.

As described above, the front leg includes an adjustment mechanism configured to adjust the front leg length and the angle of inclination of the screen.

The trommel as described above, wherein the screen is a circular screen having a length of 600cm and a diameter of 260 cm.

The trommel as described above, wherein the screen further comprises a first raceway proximate the screen inlet and a second raceway proximate the screen outlet.

The trommel as described above further comprises a power mechanism, which includes a motor, a friction wheel and a connecting shaft, wherein the friction wheel contacts with the first raceway and/or the second raceway to drive the screen to rotate through friction.

The trommel as described above, wherein the screen mesh comprises a plurality of press bent steel plates, and the steel plates are wear resistant steel plates.

The drum screen is characterized in that the width of the steel plate is 150cm, the length of the steel plate is 180cm, and the steel plate comprises 900 screen holes.

The trommel as described above further comprising a housing disposed outside the screen mesh and attached to the trommel frame and covering a portion of the screen mesh.

The application provides an improvement that drum sieve can be great is to the efficiency of stale rubbish screening to can alleviate the difficulty of present rubbish control.

Drawings

Preferred embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of a stale refuse sorting system according to one embodiment of the present application;

FIG. 2 is a schematic view of a stale refuse sorting system according to one embodiment of the present application;

FIGS. 3A and 3B are schematic views of a shaker screen according to one embodiment of the present application; and

fig. 4A and 4B are schematic views of a trommel according to one embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the following detailed description, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the present application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.

The application provides a stale waste sorting system, which can be used for rapidly screening stale waste and improving the stale waste sorting efficiency. In some embodiments, the sorting system can be used for sorting 1000-1500 tons of stale garbage by continuously working for 10 hours per day, and the efficiency can be improved by 2-3 times compared with the existing garbage sorting system. Thereby being beneficial to the sorting and treatment of the stale refuse and relieving the divergence of refuse yield and land resources.

The technical solution of the present application is further described by the following specific embodiments. It should be understood by those skilled in the art that the following descriptions are only provided for facilitating the understanding of the technical solutions of the present application, and should not be used to limit the scope of the present application.

Fig. 1 and 2 are schematic views of a stale refuse sorting system according to an embodiment of the present application. As shown, the stale refuse sorting system (which may be simply referred to as "sorting system") 100 includes a vibrating screen 110, a first trommel 120, a second trommel 130, and a fan 140. The vibrating screen 110 can be used for screening large hard materials (such as large stones) in the stale refuse, and can prevent the large hard materials from damaging subsequent devices of the system; the first trommel 120 and the second trommel 130 may be used to screen humus soil in the stale trash; the fan 140 may be used to screen light materials and small hard materials from stale refuse.

In some embodiments, the sorting system 100 may further include a loading table 101, which may be used for a loading device to feed stale waste into the shaker 110. In some embodiments, the loading device includes, but is not limited to: excavators, gantry cranes, and the like. In some embodiments, the loading device may also be a conveyor belt, which may convey stale waste into the shaker 110. In some embodiments, the sorting system 100 may further include a blower 102 disposed at the extension, which may be used to receive the light objects winnowed by the blower, preventing the light objects from being blown away by the blower. In some embodiments, the sorting system 100 may further include a transfer device (e.g., a conveyor belt) 103, which may be disposed between the shaker screen 110 and the first trommel 120, between the first trommel 120 and the second trommel 130, and between the second trommel 130 and the fan 140, and may be used for material transfer between the devices. In some embodiments, a transport device may also be included within the bellows 102.

In some embodiments, the sorting system 100 may further include material storage areas (e.g., a bulk hard material storage area 111, a humus storage area 112, a small bulk hard material storage area 113, and a light material storage area 114) that may be used to store the respective materials for later transportation processing. In some embodiments, the humus storage area 112 may be divided into a first humus storage area 112' and a second humus storage area 112 "corresponding to the first drum screen and the second drum screen, so that different humus may be separately subjected to subsequent processing.

In some embodiments, the screen mesh sizes of the first trommel 120 and the second trommel 130 are not the same. For example: the first aperture of the first trommel 120 screen is larger than the second aperture of the second trommel screen. In some embodiments, the screen of the first trommel 120 is the same as the screen of the second trommel 130. For example: the apertures of the screen include a first aperture and a second aperture. In some embodiments, the first aperture is larger than the second aperture, wherein the openings of the first aperture are proximate to the feed opening of the trommel. In some embodiments, the first aperture is 3-5cm, preferably 4 cm. In some embodiments, the second aperture is 2-4cm, preferably 3 cm. For stale waste with higher humidity, humus is present at the discharge port of the second drum sieve at any time. In some embodiments, the screen of the second trommel 130 may further include a third aperture of screen holes disposed near the outlet of the second trommel to facilitate screening of humus from clean stale refuse to reduce dust diffusion during subsequent sorting. In some embodiments, the sorting system may further comprise a third trommel (not shown), wherein the third trommel screen has third apertures. In some embodiments, the third aperture is 8-12cm, preferably 10 cm.

The configuration of each component of the sorting system will be described in detail below.

Fig. 3A and 3B are schematic views of a shaker screen according to one embodiment of the present application. Fig. 3A is a front view of a shaker screen and fig. 3B is a top view of the shaker screen.

As shown in the drawing, the vibrating screen 110 includes a screen body 310 and a support 320, wherein the screen body 310 is disposed on the support 320, and can screen stale waste by vibration, and the support 320 can be used to support the screen body 310. In some embodiments, the screen body 310 is connected to the bracket 320 by the elastic member 330, and may be used to buffer the vibration impact of the screen body 310 when screening stale garbage. In some embodiments, the elastic member 330 may be a spring, a damper, or the like. In some embodiments, the support 320 may be a hollow frame structure, which may facilitate a transfer device below the screen body 310 to transfer screened waste to the first trommel.

In some embodiments, the vibrating screen 110 may further include an outer rim 340 disposed around the screen body 310, so as to prevent stale waste from falling around the screen body during screening. In some embodiments, the outer edge 340 may be angled with respect to the screen body, similar to a "funnel shape," to facilitate the placement of stale waste onto the screen. In some embodiments, the screen body 310 is obliquely disposed on the support 320 so that the stale trash slides downward and can be screened. In some embodiments, screen 310 is inclined at an angle of 40-60 degrees.

In some embodiments, the screen body 310 includes an upper plate 301, a plurality of screening strips 302 arranged at equal intervals, and a lower plate 303, wherein the upper plate 301 is used for preventing untreated stale waste, the stale waste can be screened by the upward and downward reciprocating vibration of the screening strips 302 when the stale waste slides downwards onto the screening strips 302 under the action of gravity, and part of large hard materials can not be vibrated below the screening strips, and can move to the lower plate 303 and can be removed by the lower plate 303. The material below the screening strips is conveyed to a first drum screen through a conveying device for processing. In some embodiments, the spacing between the plurality of screening strips 302 is 15-35cm to facilitate screening of larger hard materials, thereby preventing impact damage of large hard materials to subsequent components of the system and improving the service life of the waste sorting equipment.

In some embodiments, the feeding plate 301 may vibrate synchronously with the sieving strip 302, so that the garbage on the feeding plate is influenced by vibration to rapidly move to the sieving strip, thereby accelerating the garbage sieving efficiency and effectively preventing the garbage on the feeding plate from being accumulated. In some embodiments, the blanking plate 303 may also vibrate synchronously with the screening strips 302, so that the screened bulk material leaves quickly, preventing stacking and affecting the sorting efficiency.

In some embodiments, the screen body 310 may also include power transmission components that may drive the screen bars into vibration. In some embodiments, the power transmission member may include a motor 304, an eccentric 305 (e.g., a cam), and a connecting shaft 306, the motor 304 may be used to provide power, the eccentric 305 may be used to drive the screen bar into vibration, and the connecting shaft 306 may be used to connect the motor 304, the eccentric 305, and the screen bar 302. In some embodiments, the rotation speed of the motor 304 may be 500-1500 rpm, so as to adjust different rotation speeds for different stale garbage, thereby improving the efficiency of garbage sorting. In some embodiments, the eccentricity of the eccentric may be 3-5cm, preferably 4. In some embodiments, the power transmission component may also be a pneumatic cylinder, a hydraulic cylinder, or the like.

In some embodiments, the connecting shaft 306 may also be used to connect the upper plate 301 so that the upper plate vibrates synchronously with the screen bars. In some embodiments, the connecting shaft 306 may also be used to connect the blanking plate 303 so that the feeding plate vibrates synchronously with the screen bars. In some embodiments, the upper plate 301, the screen bars 302, and the lower plate 303 may be integrally formed.

Fig. 4A and 4B are schematic views of a trommel according to one embodiment of the present application. Fig. 4A is a front view of the trommel, and fig. 4B is a side view of the trommel. As understood by those skilled in the art, both the first trommel and the second trommel in the stale waste sorting system may be of the following trommel configuration.

As shown, trommel 400 includes a screen 410 and a support 420. Wherein, screen cloth 410 sets up on support 420, can carry out further screening to the rubbish that the shale shaker conveys, and is specific: humus soil in the garbage can be screened out, and the rest garbage is discharged from a discharge hole and is transmitted to other processes through a transmission device; the support 420 may support the screen. In some embodiments, the support is a hollow frame to facilitate humus fall. In some embodiments, the trommel 400 may further include a housing 430 disposed outside of and covering a portion of the screen, which may be protected and may also prevent dust in the trash from spreading during the screening process.

In some embodiments, the screen 410 is a circular screen including a plurality of apertures 401 therein. The waste within the interior can be screened by rotating a screen, which in some embodiments is 260cm in diameter and 600cm in length. In some embodiments, the rotation speed of the screen can be 17-20 r/min, so that the screening device can be suitable for different aged garbage, and the screening efficiency of the garbage is improved. In some embodiments, the screen is formed by bending and splicing a plurality of steel plates with holes. For example: 8 blocks, 9 blocks or more. In some embodiments, the steel plate is a wear resistant steel plate to increase the service life of the screen. In some embodiments, the gauge of the steel plate may be 150cm by 180 cm. In some embodiments, the steel plate may include about 900 screen holes to ensure the strength of the steel plate, and the screen mesh may have as many screen holes as possible, which is beneficial to improving the efficiency of garbage screening.

In some embodiments, the apertures of the screen openings may be the same, i.e., the apertures of all the openings are all the same. In some embodiments, the screen may comprise a first type of mesh and a second type of mesh, wherein the first type of mesh has a different pore size than the second type of mesh. In some embodiments, the first type of apertures are closer to the feed inlet of the screen than the second type of apertures. In some embodiments, the first type of mesh has a larger pore size than the second type of mesh. In some embodiments, the screen may further comprise a third type of mesh that is closer to the exit of the screen than the second type of mesh. In some embodiments, the third type of mesh has a larger pore size than the second type of mesh. In some embodiments, the screen 410 may further include a first raceway 402 and a second raceway 403, which are respectively disposed near the inlet and outlet of the screen, and may be configured to be rotated by a power mechanism, thereby enabling the screen to rotate.

In some embodiments, the trommel 400 may further include a power mechanism disposed on the frame to provide power for the rotation of the screen. In some embodiments, the power mechanism may include a motor 411, a plurality of friction wheels 412, and a connection shaft 413, wherein the motor 411 may provide power, and the friction wheels 412 may contact with the first raceway and the second raceway, so as to drive the screen to rotate; the connection shaft 413 may be used to connect the motor 411 and the plurality of friction wheels 412, and may be used to transmit power. In some embodiments, the trommel 400 may further include a speed reducer (not shown) disposed between the motor and the friction wheel, and may be used to adjust the rotation speed of the screen, so that different rotation speeds of the screen may be selected according to different aged waste, thereby improving the efficiency of waste treatment. For example: when the humidity of the stale garbage is higher, the rotating speed of the screen can be reduced; when the humidity of the aged garbage is lower, the rotating speed of the screen can be improved.

In some embodiments, the support 420 comprises a front leg 421 near the inlet of the screen and a rear leg 422 near the outlet of the screen, the front leg 421 having a length greater than the rear leg 422 to incline the screen relative to the horizontal to facilitate rotation of the screen to screen the waste. In some embodiments, the screen is inclined at an angle a of 60-70 degrees relative to horizontal. In some embodiments, the front leg 421 may also include an adjustment mechanism 423 that may be used to adjust the length of the front leg, and thus the angle of inclination of the screen relative to horizontal. In some embodiments, the adjustment mechanism may be a spring structure, a rack and pinion structure, a worm gear structure, a ball screw structure, or an expandable material, among others. In some embodiments, the adjustment mechanism may also be a pneumatic cylinder, a hydraulic cylinder, or the like. In some embodiments, the adjusting mechanism can adjust the range of 0-20 degrees, so that different angles can be adjusted according to different stale waste to improve the efficiency of waste treatment. For example: if the humidity of the stale garbage is higher, the angle of the screen can be adjusted to be larger; if the humidity of the stale refuse is lower, the angle of the screen can be adjusted to be smaller. In some embodiments, the rear legs 422 may also include an adjustment mechanism to facilitate overall adjustment of the angle of inclination of the screen.

The application provides a stale waste sorting system can great improvement to stale waste screening efficiency to can alleviate the difficulty of present rubbish improvement.

The above embodiments are provided only for the purpose of illustration, and are not intended to limit the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the scope of the present invention, and therefore, all equivalent technical solutions should also belong to the scope of the present invention.

Claims (11)

1. The utility model provides a trommel of select separately stale rubbish which characterized in that includes:

screening a screen; and

the screen is arranged on the rotary screen support;

the screen comprises a first type screen hole and a second type screen hole, the first type screen hole is closer to the feeding opening of the screen than the second type screen hole, and the aperture of the first type screen hole is larger than that of the second type screen hole.

2. The trommel of claim 1, wherein the screen further comprises a third type of screen aperture which is closer to the discharge of the screen than the second type of screen aperture.

3. The trommel of claim 1, wherein the trommel support comprises a front leg proximate the inlet of the screen and a rear leg proximate the outlet of the screen, the front leg having a length greater than the rear leg.

4. A trommel as claimed in claim 3 wherein the screen is inclined to the horizontal at an angle of 60 to 70 degrees.

5. The trommel of claim 3, wherein the front leg includes an adjustment mechanism configured to adjust the length of the front leg and the angle of inclination of the screen.

6. The trommel of claim 1, wherein the screen is a circular screen 600cm in length and 260cm in diameter.

7. The trommel of claim 6, wherein the screen further comprises a first raceway proximate the screen inlet and a second raceway proximate the screen outlet.

8. The trommel as claimed in claim 7, further comprising a power mechanism including a motor, a friction wheel and a connecting shaft, wherein the friction wheel contacts the first and/or second raceways to frictionally rotate the screen.

9. A trommel as claimed in claim 1 wherein the screen comprises a plurality of press bent steel plates, the plates being wear resistant.

10. A trommel as claimed in claim 9 wherein the steel plate is 150cm wide and 180cm long and comprises 900 screen apertures.

11. The trommel of claim 1, further comprising a housing disposed outside the screen and attached to the trommel frame and covering a portion of the screen.

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