Drum screen with back flushing structure

Abstract

The utility model discloses a drum screen with a blowback structure, which comprises a frame, a drum, an outer shell, a gas tank and nozzle components, the outer shell is arranged on the outer side of the drum and fixed on the frame, the gas tank is fixed on a side support on the side of the frame, the nozzle components are arranged at the top of the outer shell at equal intervals, each nozzle component comprises a nozzle pipe and a nozzle, and the nozzle pipe is connected with the nozzle pipe. The two ends of the nozzle pipe are in threaded connection with plugs, the nozzles are arranged on the nozzle pipe at equal intervals, the nozzle pipe is connected with the gas tank through a hose, the cleaning brush rollers are arranged on the left side and the right side below the nozzles respectively, the protective cover is arranged above the cleaning brush rollers, and the protective cover and the cleaning brush rollers are fixed to the outer shell. The nozzle assemblies are arranged on the same straight line, and an electromagnetic valve is arranged on an outlet of the gas tank. The reverse blowing structure is simple, a reverse blowing air wall is formed on the outer surface of the roller, reverse blowing of the roller is achieved, the net cleaning purpose is achieved, and damage to the roller can be effectively reduced through air net cleaning.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drum screen cleaning technical field, concretely to a drum screen with back blowing structure. BACKGROUND

[0002] The drum screen is mainly composed of a motor, a speed reducer, a drum device, a rack, a sealing cover and an inlet and outlet; the drum screen may be blocked in the process of working, so it is necessary to regularly clean the drum screen in the process of use; if the blockage is serious, the drum screen needs to be stopped and cleaned manually, which not only wastes labor but also delays production time; the drum screen with knocking net cleaning device disclosed in Chinese patent application No. 202320316370.0 includes a drum screen mesh, a casing and a knocking mechanism; the knocking mechanism knocks the screen mesh during the rolling of the drum screen mesh, so that the material stuck in the screen hole is bounced out, preventing the screen hole from being blocked; however, it is found in use that the knocking mechanism is easy to damage the drum, and the net cleaning effect is not comprehensive, the noise is large during work, and the use range is limited because the high-pressure water can also achieve the purpose of cleaning the net but some materials cannot be washed; therefore, the drum screen with back blowing structure is provided to solve the above problems. SUMMARY

[0003] The drum screen with back blowing structure can overcome the defects of the prior art, form a back blowing gas wall on the outer surface of the drum, realize back blowing of the drum, achieve the purpose of cleaning the net, effectively reduce the damage to the drum, and effectively solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a drum screen with back blowing structure, which comprises a rack, a drum, an outer shell, a gas tank and a spray head assembly; the outer shell is arranged on the outer side of the drum, the outer shell is fixed on the rack, the gas tank is fixed on the side bracket on the side of the rack, the top of the outer shell is provided with the spray head assembly at equal intervals, the spray head assembly comprises a spray head pipe and a spray head, the two ends of the spray head pipe are threadedly connected with plugs, the spray heads are arranged on the spray head pipe at equal intervals, the spray head pipe is connected with the gas tank through a hose, cleaning brush rollers are arranged on the left and right sides below the spray heads, a protective cover is arranged above the cleaning brush rollers, and the protective cover and the cleaning brush rollers are fixed on the outer shell.

[0005] Further, at least two groups of spray head assemblies are arranged on the same straight line, an electromagnetic valve is arranged on the outlet of the gas tank, the number of the electromagnetic valves is the same as that of the spray head assemblies, and the electromagnetic valves are connected with the spray head pipes through the hose.

[0006] Further, a clamp is arranged on the outer surface of the spray head pipe, a fixing column is welded on the clamp, the fixing column abuts against the top of the outer shell, and the fixing column and the outer shell are fixedly connected through bolts.

[0007] Further, the outer shell is composed of an upper shell and a lower shell, and the upper shell is fixed with the lower shell through screws, and the lower end of the lower shell is provided with a discharge port.

[0008] Further, both ends of the roller are respectively provided with a rolling track, four corners of the frame are respectively provided with a bearing seat, a supporting wheel is arranged on the bearing seat, the supporting wheels are in rolling contact with the rolling tracks, the supporting wheels on the right side are connected through a transmission shaft, and the lower portion of the frame is provided with a motor, and the output end of the motor is connected with the transmission shaft through a chain wheel transmission assembly.

[0009] Further, the outer end of the rolling track is provided with an end door, the end door is composed of an upper semicircular plate and a lower semicircular plate, the upper semicircular plate and the lower semicircular plate are connected through a hinge, the upper semicircular plate is fixed on the outer end of the rolling track, and the outer side of the lower semicircular plate is provided with a handle.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The spray head sprays high-pressure gas to form a blowback gas wall on the outer surface of the roller, realizes blowback of the roller, achieves the purpose of cleaning the screen, and the gas screen cleaning can effectively reduce the damage to the roller; the opening and closing of the spray head assembly can be controlled through the opening and closing of the electromagnetic valve, and periodic blowback and screen cleaning can be realized.

[0012] 2. The cleaning brush roller plays a rolling cleaning role on the surface of the roller, and whether the roller is rotated forward or reversely, the cleaning brush roller and the spray head can play a role in cleaning the screen, the cleaning brush roller can brush off the materials, and the materials that cannot be blown off by the spray head can be cleaned, and the combination of the two is better. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a side view structural schematic view of the utility model;

[0015] Figure 3 It is a spray head assembly structural schematic view of the utility model;

[0016] Figure 4 It is a transmission shaft structural schematic view of the utility model.

[0017] In the figure: 1 frame, 2 bearing seat, 3 supporting wheel, 4 roller, 5 upper semicircular plate, 6 upper shell, 7 cleaning brush roller, 8 shield, 9 spray head pipe, 10 hose, 11 electromagnetic valve, 12 gas tank, 13 side bracket, 14 lower shell, 15 lower semicircular plate, 16 discharge port, 17 motor, 18 rolling track, 19 transmission shaft, 20 plug, 21 fixed column, 22 bolt, 23 hoop, 24 spray head pipe, 25 spray head. DETAILED DESCRIPTION

[0018] In the description of the utility model, it needs to understand that the orientation or positional relation indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model.

[0019] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a drum screen with backflushing structure, including rack 1, drum 4, outer shell, gas tank 12 and spray head assembly, outer shell is arranged at the outside of drum 4, outer shell is fixed on rack 1, gas tank 12 is fixed on the side face support 13 of the side of rack 1, gas tank 12 is connected with external air pump, keeps constant air pressure, provides power for the backflushing of spray head 25, the top of outer shell is provided with spray head assembly at equal intervals, spray head assembly includes spray head pipe 24 and spray head 25, the both ends of spray head pipe 24 are threadedly connected with plug 20, spray head 25 is set on spray head pipe 24 at equal intervals, spray head pipe 24 is connected with gas tank 12 by hose 10, spray head 25 corresponds with the outer surface of drum 4, spray head 25 sprays high-pressure gas, forms a backflushing gas wall on the outer surface of drum 4, realizes backflushing to drum 4, reaches the purpose of cleaning net, gas cleaning net can effectively reduce the damage to drum 4, the lower left and right sides of spray head 25 are provided with cleaning brush roller 7 respectively, cleaning brush roller 7 rotates under the drive of drum 4, cleaning brush roller 7 plays the role of rolling cleaning to the surface of drum 4, whether drum 4 is forward or reverse, cleaning brush roller 7 and spray head 25 cooperate and can play the role of cleaning net, cleaning brush roller 7 can brush off material, can clean the material that spray head 25 cannot blow off, the combination effect is better, the upper of cleaning brush roller 7 is provided with shroud 8, shroud 8 and cleaning brush roller 7 are fixed on outer shell, shroud 8 plays the role of gas gathering, and cleaning effect is better.

[0020] Spray head assembly is at least provided with two groups, and spray head assembly is arranged on the same straight line, electromagnetic valve 11 is provided on the outlet of gas tank 12, the number of electromagnetic valve 11 is same with the number of spray head assembly, electromagnetic valve 11 is connected with spray head pipe 9 by hose 10, the opening and closing of spray head assembly is controlled by the opening and closing of electromagnetic valve 11, to facilitate the control of backflushing time.

[0021] The outer surface of the spray head pipe 24 is provided with a clamp 23, the clamp 23 is welded with a fixing column 21, the fixing column 21 abuts against the top of the outer shell, the fixing column 21 is fixedly connected with the outer shell through a bolt 22, the fixing mode of the spray head pipe 24 adopts the form of the clamp 23, and the spray head pipe 24 and the top wall of the outer shell can leave a gap through the fixing column 21, so that the installation is facilitated.

[0022] The outer shell is composed of an upper shell 6 and a lower shell 14, and the upper shell 6 and the lower shell 14 are fixed through screws, the lower end of the lower shell 14 is provided with a discharge port 16, the materials screened out by the drum 4 are discharged through the discharge port 16, and the outer shell adopts a split structure, so that the drum screen is convenient to disassemble and maintain.

[0023] Both ends of the drum 4 are provided with a rolling way 18, four corners of the rack 1 are provided with a bearing seat 2, the bearing seat 2 is provided with a supporting wheel 3, the supporting wheel 3 is in rolling contact with the rolling way 18, the drum 4 is supported as a whole through the rolling contact between the supporting wheel 3 and the rolling way 18, the supporting wheels 3 on the right are connected through a transmission shaft 19, the lower portion of the rack 1 is provided with a motor 17, the output end of the motor 17 is connected with the transmission shaft 19 through a chain wheel transmission assembly, the motor 17 drives the supporting wheel 3, the rotation of the supporting wheel 3 drives the rolling of the rolling way 18, and then drives the drum screen to work, the chain wheel transmission assembly is a conventional technology, one chain wheel is arranged on the shaft of the motor 17, and the other chain wheel is arranged on the shaft of one supporting wheel 3, the chain wheels are connected through a chain, and the specific setting position is set according to the actual situation, which will not be described in detail here, the outer end of the rolling way 18 is provided with an end door, the end door is composed of an upper semicircular plate 5 and a lower semicircular plate 15, the upper semicircular plate 5 and the lower semicircular plate 15 are connected through a hinge, the upper semicircular plate 5 is fixed on the outer end of the rolling way 18, the outer side of the lower semicircular plate 15 is provided with a handle, the materials enter the drum 4 through the end door, and both ends of the drum 4 can realize feeding.

[0024] The basic principle, main features and advantages of the utility model are shown and described above, and various changes and improvements of the utility model are still possible without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A drum screen with back flushing structure comprising a frame (1), a drum (4), an outer housing, a gas tank (12) and a spray head assembly, characterized in that: The outer shell is arranged outside the roller (4), is fixed on the rack (1), the gas tank (12) is fixed on the side support (13) on the side of the rack (1), the top of the outer shell is provided with a plurality of spray head assemblies at equal intervals, the spray head assembly comprises a spray head pipe (24) and a spray head (25), the both ends of the spray head pipe (24) are threadedly connected with plugs (20), the spray heads (25) are arranged on the spray head pipe (24) at equal intervals, the spray head pipe (24) is connected with the gas tank (12) through a hose (10), the left and right sides below the spray head (25) are respectively provided with cleaning brush rollers (7), the upper side of the cleaning brush roller (7) is provided with a protective cover (8), and the protective cover (8) and the cleaning brush roller (7) are fixed on the outer shell.

2. A trommel screen with a backflushing arrangement according to claim 1, characterised in that: The spray head assembly is arranged in at least two groups, and the spray head assemblies are arranged on the same straight line, the outlet of the gas tank (12) is provided with an electromagnetic valve (11), the number of the electromagnetic valves (11) is the same as that of the spray head assemblies, and the electromagnetic valves (11) are connected with the spray head pipes (9) through the hoses (10).

3. A trommel screen with a backflushing arrangement according to claim 1, characterized in that: The outer surface of the spray head pipe (24) is provided with a clamp (23), the clamp (23) is welded with a fixing column (21), the fixing column (21) abuts against the top of the outer shell, and the fixing column (21) and the outer shell are fixedly connected through the bolts (22).

4. A trommel screen with a backflushing arrangement according to claim 1, characterized in that: The outer shell is composed of an upper shell (6) and a lower shell (14), and the upper shell (6) and the lower shell (14) are fixedly connected through screws, and the lower end of the lower shell (14) is provided with a discharge port (16).

5. A trommel screen with a backflushing arrangement according to claim 1, characterized in that: The both ends of the roller (4) are respectively provided with a rolling way (18), the four corners of the rack (1) are respectively provided with bearing seats (2), the bearing seats (2) are provided with supporting wheels (3), the supporting wheels (3) are in rolling contact with the rolling way (18), the right supporting wheels (3) are connected through a transmission shaft (19), the lower side of the rack (1) is provided with a motor (17), and the output end of the motor (17) is connected with the transmission shaft (19) through a chain wheel transmission assembly.

6. A trommel screen with a backflush arrangement according to claim 4, characterised in that: The outer end of the rolling way (18) is provided with an end door, the end door is composed of an upper semicircular plate (5) and a lower semicircular plate (15), the upper semicircular plate (5) and the lower semicircular plate (15) are connected through a hinge, the upper semicircular plate (5) is fixed on the outer end of the rolling way (18), and the outer side of the lower semicircular plate (15) is provided with a handle.

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