Belt conveyor filter cake washing device and dewatering system

Abstract

This utility model discloses a filter cake cleaning device and dewatering system for a belt conveyor. The filter cake cleaning device includes a spray assembly, a connector, and a cleaning assembly for cleaning the filter cake on the belt conveyor. The cleaning assembly includes a connecting plate and a cleaning brush. The cleaning brush is disposed on one side of the connecting plate, and the connecting plate has a liquid outlet hole communicating with the spray assembly. One end of the connector is connected to the spray assembly, and the other end of the connector is connected to the other side of the connecting plate. The spray assembly is disposed above the connecting plate via the connector. Implementing this utility model, the cleaning brush cleans surface impurities on the filter cake on the belt conveyor, avoiding vacuum leakage during the cleaning process and improving the effectiveness of removing surface impurities. Simultaneously, the cleaning liquid on the cleaning brush can remove soluble substances from inside the filter cake, reducing the moisture content and improving the quality of the filter cake.

Description

Technical Field

[0001] This utility model relates to the field of flue gas desulfurization technology in coal-fired power plants, and in particular to a belt conveyor filter cake cleaning device and dewatering system. Background Technology

[0002] In coal-fired power plants and other industrial facilities, desulfurization units are widely used to treat sulfur dioxide in flue gas. During the desulfurization process, gypsum filter cake is dewatered using a vacuum belt conveyor. Currently, existing gypsum filter cake treatment equipment uses a simple spray nozzle device. By designing several high-pressure nozzles and arranging them at equal intervals, the nozzle radiation area is limited, and the washing pressure and water volume are uneven. This cannot effectively remove residual impurities and chloride content from the filter cake surface, affecting the dewatering effect and resulting in high moisture content in the gypsum filter cake. At the same time, the product has a high chloride content, which hinders the resource utilization of gypsum filter cake. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing gypsum filter cake processing equipment, which cannot effectively remove residual impurities and chloride salt content from the surface of the filter cake, thus affecting the dehydration effect and causing high moisture content in the gypsum filter cake. This invention provides a belt conveyor filter cake cleaning device and dehydration system.

[0004] The present invention provides a filter cake cleaning device for a belt conveyor, comprising a spray assembly, a connector, and a cleaning assembly for cleaning the filter cake on the belt conveyor. The cleaning assembly includes a connecting plate and a cleaning brush. The cleaning brush is disposed on one side of the connecting plate. The connecting plate has a liquid outlet hole communicating with the spray assembly. One end of the connector is connected to the spray assembly, and the other end of the connector is connected to the other side of the connecting plate. The spray assembly is disposed above the connecting plate via the connector.

[0005] In one of the alternative technical solutions, the spray assembly includes a main spray pipe and a plurality of branch spray pipes. One end of the connector is connected to the main spray pipe. The plurality of branch spray pipes are spaced apart along the length of the connecting plate. Each branch spray pipe is provided with a spray nozzle, which is located above the liquid outlet.

[0006] In one of the alternative technical solutions, the spray assembly further includes a cleaning fluid distribution assembly, which includes an inlet, a storage chamber, and an outlet connected in sequence. The inlet is connected to the spray nozzle and is located below the spray distribution pipe, and the outlet is connected to the outlet hole.

[0007] In one of the alternative technical solutions, the liquid storage chamber is provided with an overflow component, which divides the liquid storage chamber into two interconnected chambers, a first chamber and a second chamber. The first chamber is connected to the inlet, and the second chamber is connected to the outlet. The overflow component has a sloping surface on one side inside the second chamber, and the sloping surface connects the second chamber and the outlet.

[0008] In one of the alternative technical solutions, a guide plate is provided around the liquid inlet, and the guide plate is connected between the liquid inlet and the first chamber.

[0009] In one of the alternative technical solutions, the cross-sectional area of ​​the guide plate gradually decreases in the direction from the liquid inlet to the first chamber.

[0010] In one of the alternative technical solutions, the connecting plate is elongated, and the length of the connecting plate extends along a direction perpendicular to the length of the belt conveyor. The cleaning brushes are evenly arranged along the length of the connecting plate.

[0011] In one of the alternative technical solutions, the connector is an elastic element.

[0012] In one of the alternative technical solutions, the connecting element is a spring.

[0013] The present invention also provides a dewatering system, including a belt conveyor and a belt conveyor filter cake cleaning device as described above, wherein the belt conveyor filter cake cleaning device is arranged perpendicular to the length direction of the belt conveyor.

[0014] The above technical solution has the following beneficial effects: by setting up a spray assembly, connectors and a cleaning assembly, and the cleaning assembly includes a connecting plate and a cleaning brush, the surface impurities of the filter cake on the belt conveyor are cleaned by the cleaning brush during use, avoiding vacuum leakage during the cleaning process, improving the effectiveness of removing surface impurities of the filter cake, and the cleaning liquid on the cleaning brush can remove soluble substances inside the filter cake, reduce the moisture content of the filter cake and improve the quality of the filter cake. Attached Figure Description

[0015] The disclosure of this utility model will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a belt conveyor filter cake cleaning device according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 The left view;

[0018] Figure 3 for Figure 1 Top view;

[0019] Figure 4 for Figure 1 A three-dimensional image;

[0020] Figure 5 This is a schematic diagram of a dehydration system provided in an embodiment of the present invention. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0022] It is readily understood that, based on the technical solution of this utility model, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0023] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0024] like Figures 1-4 As shown in the figure, an embodiment of the present invention provides a filter cake cleaning device 10 for a belt conveyor, including a spray assembly 11, a connector 12, and a cleaning assembly 13 for cleaning the filter cake on the belt conveyor. The cleaning assembly 13 includes a connecting plate 131 and a cleaning brush 132. The cleaning brush 132 is disposed on one side of the connecting plate 131. The connecting plate 131 is provided with a liquid outlet hole communicating with the spray assembly 11. One end of the connector 12 is connected to the spray assembly 11, and the other end of the connector 12 is connected to the other side of the connecting plate 131. The spray assembly 11 is disposed above the connecting plate 131 through the connector 12.

[0025] The belt conveyor filter cake cleaning device provided in this embodiment mainly includes a spray assembly 11, a connector 12, and a cleaning assembly 13.

[0026] The spray assembly 11 is used to provide cleaning fluid, such as water. The spray assembly 11 can be connected to an external cleaning fluid source via a pump or similar means, or the cleaning fluid source can be built into the spray assembly 11. In use, the spray assembly 11 is fixed above the belt conveyor, preferably near the front end of the belt conveyor. The spray assembly 11 can be implemented using existing technology, which will not be described in detail here.

[0027] The connector 12 is used to connect the cleaning assembly 13 to the spray assembly 11, so that the spray assembly 11 provides cleaning fluid to the cleaning assembly 13. The connector 12 can be implemented using existing technology, which will not be described in detail here.

[0028] The cleaning assembly 13 is used to clean surface impurities and free soluble substances, such as chloride salts, from the filter cake on the conveyor belt. The cleaning assembly 13 includes a connecting plate 131 and a cleaning brush 132. One side of the connecting plate 131 is positioned below the spray assembly 11 via a connector 12. The opposite side of the connecting plate 132 is provided with the cleaning brush 132. During installation, the cleaning brush 132 can contact the surface of the filter cake. During cleaning, the surface impurities of the filter cake are removed through friction between the cleaning brush 132 and the filter cake surface. Simultaneously, the cleaning liquid on the cleaning brush 132 can enter the interior of the filter cake, carrying away free soluble substances from inside the filter cake.

[0029] In this embodiment, by setting up a spray assembly, a connector, and a cleaning assembly, and the cleaning assembly includes a connecting plate and a cleaning brush, the surface impurities of the filter cake on the conveyor belt are cleaned by the cleaning brush during use, avoiding vacuum leakage during the cleaning process, improving the effectiveness of removing surface impurities from the filter cake, and the cleaning liquid on the cleaning brush can remove soluble substances inside the filter cake, reduce the moisture content of the filter cake, and improve the quality of the filter cake.

[0030] In one embodiment, the spray assembly 11 includes a main spray pipe 111 and a plurality of spray branch pipes 112. One end of the connector 12 is connected to the main spray pipe 111. The plurality of spray branch pipes 112 are spaced apart along the length of the connecting plate 131. The plurality of spray branch pipes 112 are provided with spray nozzles 1121, which are located above the liquid outlet.

[0031] The spray assembly 11 includes a main spray pipe 111 and multiple spray branch pipes 112 that are interconnected. The main spray pipe 111 extends along the length direction perpendicular to the belt conveyor. The multiple spray branch pipes 112 are evenly spaced along the length direction of the main spray pipe 111, and the spray nozzles 1121 of the spray branch pipes 112 are located above the liquid outlet holes, so that the cleaning liquid flowing out through the spray nozzles 1121 can better enter the cleaning brush 132 through the liquid outlet holes and better clean the impurities on the filter cake.

[0032] Preferably, control valves can be installed on the main spray pipe 111 and / or the branch spray pipe 112 to control the opening or closing of the main spray pipe 111 and / or the branch spray pipe 112, to meet different cleaning needs, such as controlling the amount of impurities at different locations on the filter cake. It should be noted that the control valves can be manual mechanical valves or electric valves, such as solenoid valves.

[0033] In one embodiment, the spray assembly 11 further includes a cleaning fluid distribution assembly, which includes an inlet 113, a storage chamber 114, and an outlet connected in sequence. The inlet 113 is connected to the spray nozzle 1121 and is located below the spray pipe 112. The outlet is connected to the outlet hole.

[0034] The spray assembly 11 also includes a cleaning fluid distribution assembly, which distributes the cleaning fluid evenly and directs it onto the cleaning brush 132. The cleaning fluid distribution assembly includes an inlet 113, a storage chamber 114, and an outlet. The inlet 113 is located below the spray nozzle 1121 and is elongated, with its length at least covering the outlet path of the spray nozzle 1121. The storage chamber 114 stores the cleaning fluid flowing in through the inlet 113 and evenly distributes the stored cleaning fluid to the outlet.

[0035] In one embodiment, the liquid storage chamber 114 is provided with an overflow component 1141, which divides the liquid storage chamber 114 into two interconnected chambers, a first chamber and a second chamber. The first chamber is connected to the liquid inlet 113, and the second chamber is connected to the liquid outlet. The overflow component 1141 has a sloping surface 11411 on one side inside the second chamber, and the sloping surface 11411 connects the second chamber and the liquid outlet.

[0036] An overflow component 1141 is provided inside the liquid storage chamber 114, dividing the liquid storage chamber 114 into a first chamber and a second chamber. The first chamber is connected to the inlet 113, and the tops of the first and second chambers are connected. The overflow component 1141 has a sloping surface 11411 on one side inside the second chamber, extending from the top of the overflow component 1141 to the outlet. In use, when the cleaning fluid enters the first chamber through the inlet 113 and overflows from the first chamber, the overflowing cleaning fluid is evenly distributed to the outlet through the sloping surface 1141. The direction of the water flow of the cleaning fluid is as follows: Figure 2 As shown by the arrow.

[0037] In one embodiment, a guide plate 115 is provided around the liquid inlet 113, and the guide plate 115 is connected between the liquid inlet 113 and the first chamber.

[0038] The liquid inlet 113 is elongated, and guide plates 115 are provided around the liquid inlet 113. The four guide plates 115 surround and form a groove extending towards the first chamber, so that the cleaning liquid can flow into the first chamber accurately and overflow through the first chamber, thereby achieving a more uniform distribution of the cleaning liquid.

[0039] In one embodiment, in order to allow the cleaning fluid to flow more accurately into the first chamber, the cross-sectional area of ​​the guide plate 115 gradually decreases in the direction from the inlet 113 to the first chamber.

[0040] In one embodiment, the connecting plate 131 is elongated, and its length extends along a direction perpendicular to the length of the belt conveyor. The cleaning brushes 132 are evenly arranged along the length of the connecting plate 131, so that the cleaning brushes 132 can fully cover the surface of the filter cake, thereby further improving the cleaning efficiency.

[0041] In one embodiment, the connector 12 is an elastic element.

[0042] Because filter cake thickness varies, with some being thicker and others thinner, the connector 12 is designed to better accommodate different filter cake thicknesses and ensure the cleaning brush 132 fits the filter cake more closely. When the filter cake thickness increases, the connector 12 is squeezed to increase the distance between the cleaning brush 132 and the filter cake; conversely, when the filter cake thickness decreases, the connector 12 is stretched to decrease the distance between the cleaning brush 132 and the filter cake. This allows for adjustment of the distance between the cleaning brush 132 and the filter cake according to its thickness, thus adapting to filter cakes of varying thicknesses.

[0043] In one embodiment, in order to better adapt to filter cakes of different thicknesses and enable the cleaning brush 132 to more closely clean impurities on the surface of the filter cake, the connector 12 is a spring.

[0044] like Figure 5 As shown, an embodiment of the present invention provides a dewatering system including a belt conveyor 20 and a belt conveyor filter cake cleaning device 10 as described above, wherein the belt conveyor filter cake cleaning device 10 is arranged perpendicular to the length direction of the belt conveyor 20.

[0045] During installation, the belt conveyor filter cake cleaning device 10 is positioned above the belt conveyor 20, and the cleaning components of the belt conveyor filter cake cleaning device 10 are perpendicular to the length direction of the belt conveyor 20.

[0046] In this embodiment, during use, the cleaning brush of the filter cake cleaning device on the belt conveyor cleans the surface impurities of the filter cake on the belt conveyor, avoiding vacuum leakage during the cleaning process, improving the effectiveness of removing impurities from the surface of the filter cake, and at the same time, the cleaning liquid on the cleaning brush can remove soluble substances inside the filter cake, reduce the moisture content of the filter cake, and improve the quality of the filter cake.

[0047] The above description is merely the principle and preferred embodiment of this utility model. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of this utility model, and these modifications should also be considered within the protection scope of this utility model.

Claims

1. A filter cake cleaning device for a belt conveyor, characterized in that, The device includes a spray assembly, a connector, and a cleaning assembly for cleaning filter cake on a belt conveyor. The cleaning assembly includes a connecting plate and a cleaning brush. The cleaning brush is disposed on one side of the connecting plate. The connecting plate has a liquid outlet hole communicating with the spray assembly. One end of the connector is connected to the spray assembly, and the other end of the connector is connected to the other side of the connecting plate. The spray assembly is disposed above the connecting plate via the connector.

2. The belt conveyor filter cake cleaning device as described in claim 1, characterized in that, The spray assembly includes a main spray pipe and multiple branch spray pipes. One end of the connector is connected to the main spray pipe. The multiple branch spray pipes are spaced apart along the length of the connecting plate. Each branch spray pipe is provided with a spray nozzle, which is located above the liquid outlet.

3. The belt conveyor filter cake cleaning device as described in claim 2, characterized in that, The spray assembly also includes a cleaning fluid distribution assembly, which includes an inlet, a storage chamber, and an outlet connected in sequence. The inlet is connected to the spray nozzle and is located below the spray distribution pipe, and the outlet is connected to the outlet hole.

4. The belt conveyor filter cake cleaning device as described in claim 3, characterized in that, The liquid storage chamber is provided with an overflow component, which divides the liquid storage chamber into two interconnected chambers: a first chamber and a second chamber. The first chamber is connected to the liquid inlet, and the second chamber is connected to the liquid outlet. The overflow component has a sloping surface on one side inside the second chamber, which connects the second chamber and the liquid outlet.

5. The belt conveyor filter cake cleaning device as described in claim 4, characterized in that, A guide plate is provided around the liquid inlet, and the guide plate is connected between the liquid inlet and the first chamber.

6. The belt conveyor filter cake cleaning device as described in claim 5, characterized in that, The cross-sectional area of ​​the guide plate gradually decreases from the inlet to the first chamber.

7. The belt conveyor filter cake cleaning device according to any one of claims 1-5, characterized in that, The connecting plate is elongated, and its length extends perpendicular to the length of the belt conveyor. The cleaning brushes are evenly arranged along the length of the connecting plate.

8. The belt conveyor filter cake cleaning device as described in claim 1, characterized in that, The connecting element is an elastic element.

9. The belt conveyor filter cake cleaning device as described in claim 8, characterized in that, The connecting component is a spring.

10. A dehydration system, characterized in that, It includes a belt conveyor and a belt conveyor filter cake cleaning device as described in any one of claims 1-9, wherein the belt conveyor filter cake cleaning device is arranged perpendicular to the length direction of the belt conveyor.

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