Dust removal device for screw conveyer

Abstract

The utility model belongs to the technical field of ash conveying, and particularly discloses a dust removal device for a spiral conveyer, the spiral conveyer comprises a pipe body and a cover plate arranged at the top of the pipe body, a spiral blade is arranged in the pipe body, a gear motor for driving the spiral blade to rotate is arranged on the pipe body, and the dust removal device further comprises an industrial water pipe, industrial water is introduced into the industrial water pipe, a plurality of first water inlets are formed in the end, close to the discharging port, of the cover plate and connected with the industrial water pipe through first pipelines, and a water pump used for providing power, an electromagnetic valve and a stop valve are arranged on the industrial water pipe. Industrial water is injected into the spiral conveyor through the industrial water pipe, the industrial water entering the spiral conveyor is mixed with ash conveyed in the spiral conveyor, the industrial water plays a role in wetting the ash, and therefore the ash is prevented from floating in the air, the dust raising condition is avoided in the slag discharging process, and the slag discharging efficiency is improved. Therefore, the sanitation of a working site is ensured, and the requirements of environmental protection and safety are met.

Description

Technical Field

[0001] The utility model relates to the technical field of ash and slag conveying, in particular to a dust removal device for a screw conveyor. Background Art

[0002] A large amount of municipal sludge is generated every day in urban life. The municipal sludge mainly comes from septic tanks. After the municipal sludge is collected and transported to a sludge disposal plant, it is transported to an incinerator through a sludge pump and a sludge conveying pipe for incineration and harmless treatment. Very fine particles and fly ash are generated from the incinerated sludge, and finally these fine particles are transported to a slag bin for storage by a Roots blower. Refer to Figure 1 , when the material level in the slag bin reaches a certain height, it is necessary to convey the ash and slag to a truck through a screw conveyor at the bottom of the slag bin for loading and transporting out. The screw conveyor includes a pipe body and a cover plate arranged on the top of the pipe body. An inlet is arranged at the top on one side of the pipe body, and an outlet is arranged at the bottom on the other side of the pipe body. A spiral blade is arranged inside the pipe body, and a reduction motor for driving the spiral blade to rotate is arranged on the pipe body. Since the ash and slag particles are very fine and extremely dry after incineration, ash will be generated during the process of discharging the slag, seriously affecting the hygiene and environmental protection safety requirements of the work site.

[0003] To further understand the prior art, after retrieval, the Chinese patent CN205526316U in the prior art discloses a dust removal type screw conveyor, which includes a feeding cylinder body, an inlet arranged on the feeding cylinder body, and a dust removal device connected to the inlet. One end of the feeding cylinder body is flange-connected to a transmission device through a first end cover, and the other end of the feeding cylinder body is sealed through a second end cover flange. The inlet is connected to the dust removal device. The dust removal device includes a dust removal air duct and a dust remover connected to the dust removal air duct. An inlet, a gas outlet and a discharge cavity are respectively arranged on the side wall of the dust remover. The gas outlet of the dust remover is connected to a blower, and the air outlet of the blower is connected to the dust removal air duct. However, the material transported by the screw conveyor in this application is ash and slag, and the particle size of the ash and slag is small. If the dust removal type screw conveyor of this application is used for transportation, all the ash and slag will be adsorbed by the dust removal device, losing the purpose of transporting the ash and slag. Therefore, the dust removal type screw conveyor of this application is not suitable for transporting ash and slag. Summary of the Utility Model

[0004] Aiming at the technical problem that the screw conveyor in the prior art generates ash during the transportation of ash and slag, which affects the hygiene and environmental protection safety of the work site, the utility model provides a dust removal device for a screw conveyor.

[0005] The technical solution adopted by the present utility model is as follows: a dust removal device for a screw conveyor. The screw conveyor includes a pipe body and a cover plate arranged on the top of the pipe body. An inlet is arranged at the top of one side of the pipe body, and an outlet is arranged at the bottom of the other side of the pipe body. A screw blade is arranged inside the pipe body, and a reduction motor for driving the screw blade to rotate is arranged on the pipe body. It further includes an industrial water pipe with industrial water flowing through it. One end of the cover plate close to the outlet is provided with a plurality of first water inlets, and the first water inlets are connected to the industrial water pipe through a first pipe. A water pump for providing power is arranged on the industrial water pipe, and a solenoid valve and a stop valve are arranged on the first pipe.

[0006] Furthermore, the first water inlets are arranged in a matrix, divided into two rows, and arranged on both sides close to the edge of the cover plate.

[0007] Furthermore, the first pipe is a flexible pipe.

[0008] Furthermore, the stop valve is a manual valve.

[0009] Furthermore, the distance between adjacent first water inlets in the axial direction is 60 mm - 80 mm.

[0010] Furthermore, a plurality of second water inlets are also arranged on the cover plate. The second water inlets are arranged at one end close to the inlet, and the second water inlets are connected to the industrial water pipe through a second pipe. A regulating valve is arranged on the second pipe.

[0011] Furthermore, the second pipe is a rigid pipe.

[0012] Furthermore, the second water inlets are arranged in the middle of the cover plate.

[0013] Furthermore, the distance between adjacent second water inlets is 20 mm - 40 mm.

[0014] Furthermore, the flow rate of the industrial water in the first pipe is 2 cubic meters per hour.

[0015] The beneficial effects of the present utility model are as follows: The present utility model injects industrial water into the screw conveyor through the industrial water pipe. The industrial water entering the screw conveyor is mixed with the ash slag transported therein, and the industrial water plays a role in moistening the ash slag, thus preventing the ash slag from floating in the air. Therefore, the situation of dust flying is avoided during the process of discharging the slag, which ensures the hygiene of the working site and also meets the requirements of environmental protection and safety. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the transportation of ash slag in the prior art.

[0017] Figure 2 It is a schematic structural diagram of the present utility model.

[0018] The markings in the figure are as follows:

[0019] 1. Slag bin;

[0020] 2. Screw conveyor; 201. Pipe body; 202. Cover plate; 203. Feed inlet; 204. Screw blade; 205. Reduction motor;

[0021] 3. Industrial water pipe; 301. Water pump;

[0022] 4. First water inlet;

[0023] 5. First pipeline; 501. Solenoid valve; 502. Globe valve;

[0024] 6. Second water inlet;

[0025] 7. Second pipeline; 701. Control valve. Detailed implementation manners

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "front", "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] The following further describes the present utility model in conjunction with the attached Figure 2 drawings.

[0029] Embodiment

[0030] In view of the technical problems existing in the background art, the present utility model provides a dust removal device for a screw conveyor.

[0031] In the specific technical solution, refer to Figure 2, the screw conveyor includes a pipe body 201 and a cover plate 202 provided on the top of the pipe body 201. A feed inlet 203 is provided at one side of the top of the pipe body 201, and a discharge outlet is provided at the bottom of the other side of the pipe body 201. A screw blade 204 is arranged inside the pipe body 201, and a reduction motor 205 for driving the screw blade 204 to rotate is arranged on the pipe body 201. The screw conveyor is a mature device in the prior art, and its working principle will not be elaborated here.

[0032] Since the material transported in this application is the incinerated municipal sludge, very fine particles and fly ash will be generated by the incinerated municipal sludge. Therefore, dust is generated during the transportation of ash by the screw conveyor, and the dust seriously affects the hygiene and environmental protection safety requirements of the work site. For this reason, the present utility model makes the following further improvements: Refer to Figure 2 , this embodiment is also provided with an industrial water pipe 3, and industrial water is introduced into the industrial water pipe 3. One end of the cover plate 202 close to the discharge outlet is provided with a plurality of first water inlets 4, and the first water inlets 4 are connected to the industrial water pipe 3 through a first pipeline 5. A water pump 301 for providing power is arranged on the industrial water pipe 3, and a solenoid valve 501 and a stop valve 502 are arranged on the first pipeline 5. The flow rate of the industrial water in the first pipeline 5 is 2 cubic meters per hour.

[0033] Working principle: When the material level in the slag bin reaches the requirement of discharging slag, start the screw conveyor to convey the ash, and at the same time, start the water pump 301 and open the solenoid valve 501 and the stop valve 502. The industrial water in the industrial water pipe 3 enters the screw conveyor through the first pipeline 5 and the first water inlets 4 in sequence. The industrial water entering the screw conveyor is mixed with the ash transported therein, and the industrial water plays a role in wetting the ash, so as to avoid the ash floating in the air. Therefore, the situation of dust is avoided during the slag discharging process, thus ensuring the hygiene of the work site and meeting the requirements of environmental protection safety.

[0034] To further improve the wetting effect of the ash, this embodiment is also provided with a plurality of second water inlets 6 on the cover plate 202. The second water inlets 6 are arranged at one end close to the feed inlet 203, and the second water inlets 6 are connected to the industrial water pipe 3 through a second pipeline 7. The first water inlets 4 and the second water inlets 6 are evenly arranged in the axial direction of the cover plate, so that water inlets are arranged on the entire cover plate, thereby improving the wetting effect of the ash. Since the second pipeline 7 is close to the feed inlet 203, the industrial water consumption can be adjusted according to the slag discharge amount. Therefore, a regulating valve 701 is arranged on the second pipeline 7.

[0035] Among them, the first water inlets 4 are arranged in a matrix, the first water inlets 4 are arranged in two rows, the first water inlets 4 are arranged on both sides close to the edge of the cover plate 202, and the second water inlets 6 are arranged in the middle of the cover plate 202. So that industrial water flows into both the middle and the two sides of the edge of the pipe body, increasing the contact area between the industrial water and the ash and improving the wetting effect.

[0036] For the convenience of arranging the pipelines, the first pipeline 5 in this embodiment is a flexible pipe, and the second pipeline 7 is a rigid pipe. The distance between adjacent first water inlets in the axial direction is 60 mm - 80 mm, and the distance between adjacent second water inlets is 20 mm - 40 mm.

[0037] Since the opening frequency of the stop valve is not high, in order to improve the service life of the valve, the stop valve 502 is a manual valve.

[0038] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. Dust removal device for screw conveyor, the screw conveyor includes a pipe body (201) and a cover plate (202) arranged on the top of the pipe body (201), a feed inlet (203) is arranged at the top of one side of the pipe body (201), a discharge outlet is arranged at the bottom of the other side of the pipe body (201), a screw blade (204) is arranged inside the pipe body (201), and a reduction motor (205) for driving the screw blade (204) to rotate is arranged on the pipe body (201), characterized in that, It further includes an industrial water pipe (3) through which industrial water is introduced. At one end of the cover plate (202) close to the discharge port, there are provided a number of first water inlets (4). The first water inlets (4) are connected to the industrial water pipe (3) through a first pipeline (5). A water pump (301) for providing power is provided on the industrial water pipe (3), and a solenoid valve (501) and a stop valve (502) are provided on the first pipeline (5).

2. The dust removal device for a screw conveyor according to claim 1, characterized in that, The first water inlets (4) are arranged in a matrix, with the first water inlets (4) arranged in two rows and located on both sides close to the edge of the cover plate (202).

3. The dust removal device for a screw conveyor according to claim 1, characterized in that, The first pipeline (5) is a flexible pipe.

4. The dust removal device for a screw conveyor according to claim 1, characterized in that, The stop valve (502) is a manual valve.

5. The dust removal device for a screw conveyor according to claim 1, characterized in that, The distance between adjacent first water inlets in the axial direction is 60 mm - 80 mm.

6. The dust removal device for a screw conveyor according to claim 1, characterized in that, A number of second water inlets (6) are further provided on the cover plate (202). The second water inlets (6) are arranged at one end close to the feed port (203). The second water inlets (6) are connected to the industrial water pipe (3) through a second pipeline (7). A regulating valve (701) is provided on the second pipeline (7).

7. The dust removal device for a screw conveyor according to claim 6, characterized in that, The second pipeline (7) is a rigid pipe.

8. The dust removal device for a screw conveyor according to claim 6, characterized in that, The second water inlets (6) are arranged in the middle of the cover plate (202).

9. The dust removal device for a screw conveyor according to claim 6, characterized in that, The distance between adjacent second water inlets is 20 mm - 40 mm.

10. The dust removal device for a screw conveyor according to claim 1, wherein, The flow rate of the industrial water in the first pipeline (5) is 2 cubic meters per hour.

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