Filter screen cleaning device for drum filter screen

Abstract

The utility model discloses a filter screen cleaning device for a drum filter screen. The filter screen cleaning device comprises an air pick, an elastic piece and a striking piece, the elastic piece is provided with a first end and a second end which are opposite, the first end of the elastic piece is connected with a pick head of the air pick, the striking piece is provided with a connecting end and a working end which are opposite, and the connecting end of the striking piece is connected with the second end of the elastic piece. According to the filter screen cleaning device, hardened slag particles on the filter screen can be cleaned through the filter screen cleaning device, meanwhile, the damage risk of the filter screen cleaning device to the filter screen is reduced, the service life of the filter screen is prolonged, and the production cost is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of rotary drum screen filters, and particularly relates to a filter screen cleaning device for a rotary drum screen filter. Background Art

[0002] Blast furnace slag (water-quenched blast furnace slag) can be ground to form high-quality slag cement. However, during the water quenching process, the slag and the slag flushing water are mixed together, resulting in a high moisture content of the blast furnace slag and affecting the use effect. Therefore, it is necessary to separate the slag from the water. Currently, the slag-water separation methods include the OCP method, the INBA method, the precipitation method, etc.

[0003] In the INBA method, a rotary drum screen filter is used for dehydration. The aperture of the filter screen of the rotary drum screen filter is 0.6 mm to 1 mm, and the material is usually stainless steel, with a service life of 3 to 6 months. However, due to the relatively fine slag particles of the blast furnace slag, its main components are CaO, SiO 2 、Al 2 O 3 , and the blast furnace slag is acidic and has certain corrosiveness, which easily causes the slag particles of the blast furnace slag to agglomerate and block the filter screen.

[0004] Currently, a high-pressure water gun is usually used to flush the filter screen, but the cleaning effect is poor, resulting in a short service life of the filter screen and thus an increase in production costs. Utility Model Content

[0005] This application aims to at least solve to a certain extent the technical problem of the poor cleaning effect of the current filter screen cleaning device. For this purpose, this application provides a filter screen cleaning device for a rotary drum screen filter.

[0006] The technical solution of this application is as follows:

[0007] This application provides a filter screen cleaning device for a rotary drum screen filter, and the filter screen cleaning device includes:

[0008] A pneumatic pick;

[0009] An elastic member, the elastic member has opposite first and second ends, and the first end of the elastic member is connected to the pick head of the pneumatic pick;

[0010] A striking member, the striking member has opposite connecting and working ends, the connecting end of the striking member is connected to the second end of the elastic member, and the working end of the striking member is used to act on the agglomerated slag particles on the upper plate of the filter screen of the rotary drum screen filter.

[0011] In some embodiments, the filter screen cleaning device further includes a connecting member, and the connecting member is connected between the pick head and the first end of the elastic member.

[0012] In some embodiments, the connecting member has opposite first and second ends. The first end of the connecting member is connected to the pick head. The second end of the connecting member is provided with a movable slot. The connecting end of the striking member is movably disposed in the movable slot. The elastic member is disposed in the movable slot, and the first end of the elastic member abuts against the bottom of the movable slot.

[0013] In some embodiments, the striking member includes a movable rod and a striking plate connected thereto. The movable rod is the connecting end of the striking member, and the striking plate is the working end of the striking member.

[0014] In some embodiments, the movable rod includes a first rod body and a second rod body connected thereto. The diameter of the first rod body is greater than the diameter of the second rod body. The first rod body is connected to the striking plate. The second rod body is movably disposed in the movable slot. The elastic member is a compression spring, and the second end of the elastic member is sleeved on the second rod body.

[0015] In some embodiments, the first rod body is in clearance fit with the movable slot.

[0016] In some embodiments, the first end of the connecting member is provided with a fixing slot, and the pick head is disposed in the fixing slot.

[0017] In some embodiments, a threaded hole communicating with the fixing slot is provided on the circumferential surface of the first end of the connecting member;

[0018] The filter screen cleaning device further includes a bolt, the bolt is connected to the threaded hole, and the bolt can extend into the fixing slot.

[0019] In some embodiments, there are a plurality of the threaded holes and the bolts, and the threaded holes and the bolts are arranged in one-to-one correspondence.

[0020] In some embodiments, the plurality of threaded holes are arranged at intervals along the axial direction of the connecting member.

[0021] The embodiments of the present application have at least the following beneficial effects:

[0022] A filter screen cleaning device for a rotary drum filter screen proposed in the present application. The pick head of the pneumatic pick of the filter screen cleaning device has a large impact force. When the pick head of the pneumatic pick directly acts on the caked slag particles on the filter screen of the rotary drum filter screen, the caked slag particles on the filter screen will be decomposed and separated due to the impact, so as to realize the cleaning of the caked slag particles on the filter screen. However, at the same time, due to the large impact force of the pick head of the pneumatic pick, the pick head may damage the filter screen, resulting in the filter screen being damaged and unable to be used.

[0023] Therefore, an elastic member and a striking member are provided on the basis of the pick head of the pneumatic pick. The elastic member has opposite first and second ends, and the striking member has opposite connecting and working ends. The pick head of the pneumatic pick is connected to the first end of the elastic member, the second end of the elastic member is connected to the connecting end of the striking member, and the working end of the striking member is used to act on the caked slag particles on the filter screen. The elastic member plays a buffering role between the pick head of the pneumatic pick and the striking member to prevent the impact force of the pick head from directly acting on the filter screen. The impact force of the striking member acting on the caked slag particles on the filter screen is less than the impact force of the pick head directly acting on the caked slag particles on the filter screen, and still can maintain the cleaning effect on the caked slag particles on the filter screen. In this way, while the filter screen cleaning device cleans the caked slag particles on the filter screen, the risk of damage to the filter screen by the filter screen cleaning device is reduced, the service life of the filter screen is increased, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is a schematic structural diagram of a filter screen cleaning device for a rotary drum filter screen according to an embodiment of the present application;

[0026] Figure 2 is Figure 1 a cross-sectional view of the filter screen cleaning device for the rotary drum filter screen in

[0027] Reference numerals:

[0028] 10. Filter screen cleaning device for rotary drum filter screen; 100. Pneumatic pick; 110. Pick head; 200. Elastic member; 300. Striking member; 310. Movable rod; 311. First rod body; 312. Second rod body; 320. Striking plate; 400. Connecting member; 401. Movable groove; 402. Fixed groove; 403. Threaded hole; 500. Bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some, rather than all, embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0030] In addition, this application may repeat reference numerals and / or reference letters in different instances. This repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0031] The present application will be described below with reference to the accompanying drawings and specific embodiments:

[0032] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a filter screen cleaning device 10 for a rotary drum filter screen. In combination with Figure 1 and Figure 2 , the filter screen cleaning device 10 includes a pneumatic pick 100, an elastic member 200, and a striking member 300. Among them, the elastic member 200 has opposite first and second ends. The first end of the elastic member 200 is connected to the pick head 110 of the pneumatic pick 100. The striking member 300 has opposite connecting and working ends. The connecting end of the striking member 300 is connected to the second end of the elastic member 200. The working end of the striking member 300 is used to act on the caked slag particles on the filter screen of the rotary drum filter screen.

[0033] Specifically, during the dehydration of blast furnace slag by the rotary drum filter screen, the slag particles of the blast furnace slag are clogged on the filter screen of the rotary drum filter screen due to caking. In order to clean the caked slag particles on the filter screen of the rotary drum filter screen, an embodiment of the present application proposes a filter screen cleaning device 10 for a rotary drum filter screen. The pick head 110 of the pneumatic pick 100 of the filter screen cleaning device 10 has a large impact force. When the pick head 110 of the pneumatic pick 100 directly acts on the caked slag particles on the filter screen of the rotary drum filter screen, the caked slag particles on the filter screen will be decomposed and separated due to the impact, thereby realizing the cleaning of the caked slag particles on the filter screen. However, at the same time, due to the large impact force of the pick head 110 of the pneumatic pick 100, the pick head 110 may damage the filter screen, resulting in the filter screen being damaged and unable to be used.

[0034] Therefore, an elastic member 200 and a striking member 300 are provided on the pick head 110 of the pneumatic pick 100. The elastic member 200 has opposite first and second ends, and the striking member 300 has opposite connecting and working ends. The pick head 110 of the pneumatic pick 100 is connected to the first end of the elastic member 200, the second end of the elastic member 200 is connected to the connecting end of the striking member 300, and the working end of the striking member 300 is used to act on the caked slag particles on the filter screen. The elastic member 200 plays a buffering role between the pick head 110 of the pneumatic pick 100 and the striking member 300 to prevent the impact force of the pick head 110 from directly acting on the filter screen. The impact force of the striking member 300 acting on the caked slag particles on the filter screen is less than the impact force of the pick head 110 directly acting on the caked slag particles on the filter screen, and still can maintain the cleaning effect on the caked slag particles on the filter screen. In this way, while the filter screen cleaning device 10 cleans the caked slag particles on the filter screen, the risk of damage to the filter screen by the filter screen cleaning device 10 is reduced, the service life of the filter screen is increased, and the production cost is reduced.

[0035] It should be noted that when the filter screen cleaning device 10 is used to clean the caked slag particles on the filter screen of the rotary drum filter screen, the filter screen is usually laid on the ground or on a grid rack, and the filter screen cleaning device 10 is directly used to clean the filter screen.

[0036] In some embodiments, such as Figure 1 and Figure 2 as shown, the filter screen cleaning device 10 further includes a connecting member 400, and the connecting member 400 is connected between the pick head 110 of the pneumatic pick 100 and the first end of the elastic member 200. In this way, the elastic member 200 and the striking member 300 can be fixed on the pick head 110 of the pneumatic pick 100 through the connecting member 400.

[0037] In some embodiments, such as Figure 1 and Figure 2 as shown, the connecting member 400 has opposite first and second ends. The first end of the connecting member 400 is connected to the pick head 110 of the pneumatic pick 100. The second end of the connecting member 400 is provided with a movable groove 401. The connecting end of the striking member 300 is movably arranged in the movable groove 401, and the elastic member 200 is arranged in the movable groove 401. The first end of the elastic member 200 abuts against the bottom of the movable groove 401. In order to realize the connection of the connecting member 400 between the pick head 110 of the pneumatic pick 100 and the elastic member 200 and the striking member 300. On the one hand, the first end of the connecting member 400 is connected to the pick head 110 of the pneumatic pick 100. On the other hand, a movable groove 401 is provided at the second end of the connecting member 400, and the connecting ends of the elastic member 200 and the striking member 300 are both arranged in the movable groove 401 of the connecting member 400. The connecting ends of the elastic member 200 and the striking member 300 are fixed and limited through the movable groove 401 to ensure the working effect of the filter screen cleaning device 10.

[0038] In some embodiments, such as Figure 1 and Figure 2 shown, the striking member 300 includes a movable rod 310 and a striking plate 320. The movable rod 310 is connected to the striking plate 320. The movable rod 310 is the connecting end of the striking member 300, and the striking plate 320 is the working end of the striking member 300. One end of the movable rod 310 is connected to the second end of the elastic member 200, the other end of the movable rod 310 is connected to the striking plate 320, and the plate surface of the striking plate 320 acts on the filter screen. To increase the contact area between the striking member 300 and the filter screen through the striking plate 320, so as to reduce the damage to the filter screen by the filter screen cleaning device 10 while ensuring the striking effect.

[0039] In some embodiments, such as Figure 1 and Figure 2 shown, the movable rod 310 includes a first rod body 311 and a second rod body 312. The first rod body 311 is connected to the second rod body 312. The diameter of the first rod body 311 is greater than the diameter of the second rod body 312. The first rod body 311 is connected to the striking plate 320, and the second rod body 312 is movably arranged in the movable groove 401. The elastic member 200 is a compression spring, and the second end of the elastic member 200 is sleeved on the second rod body 312. To realize the fixed limit of the striking member 300 to the elastic member 200 by sleeving the second end of the elastic member 200 on the second rod body 312 and making the end of the second end of the elastic member 200 abut against the step formed between the first rod body 311 and the second rod body 312.

[0040] In some embodiments, such as Figure 2 shown, the first rod body 311 has a clearance fit with the movable groove 401 of the connecting member 400. The diameter of the second rod body 312 is smaller than the diameter of the movable groove 401 of the connecting member 400. In order to realize the more stable movement of the striking member 300 in the movable groove 401 of the connecting member 400, the first rod body 311 is provided with a clearance fit with the movable groove 401 of the connecting member 400, so that the connecting end of the striking member 300 maintains axial movement in the movable groove 401 of the connecting member 400, thereby improving the working effect of the filter screen cleaning device 10.

[0041] In some embodiments, such as Figure 2 shown, the first end of the connecting member 400 is provided with a fixing groove 402, and the pick head 110 is arranged in the fixing groove 402. To realize the fixed connection between the connecting member 400 and the pick head 110 by providing the fixing groove 402 at the first end of the connecting member 400 and installing the pick head 110 in the fixing groove 402 of the connecting member 400.

[0042] In some embodiments, such as Figure 1 and Figure 2As shown, a threaded hole 403 is provided on the circumferential surface of the first end of the connecting member 400, and the threaded hole 403 communicates with the fixing groove 402. The filter cleaning device 10 further includes a bolt 500. The bolt 500 is connected to the threaded hole 403 and can extend into the fixing groove 402. After the pick head 110 is installed in the fixing groove 402 of the connecting member 400, the bolt 500 is screwed into the threaded hole 403 until the bolt 500 presses the pick head 110 tightly in the fixing groove 402 of the connecting member 400, thereby ensuring the fixed connection effect between the connecting member 400 and the pick head 110.

[0043] In some embodiments, such as Figure 1 and Figure 2 as shown, there are a plurality of threaded holes 403 and bolts 500, and the threaded holes 403 and the bolts 500 are arranged in one-to-one correspondence. By providing a plurality of threaded holes 403 and bolts 500, the

[0044] In some embodiments, such as Figure 1 and Figure 2 as shown, the plurality of threaded holes 403 are arranged at intervals along the axial direction of the connecting member 400. Since the pick head 110 of the pneumatic pick 100 reciprocates along the axial direction, a plurality of threaded holes 403 are arranged at intervals along the axial direction of the connecting member 400 to provide a better fixing effect.

[0045] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0046] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application 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 this application.

[0047] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0048] In the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0049] In addition, in the present application, the descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0051] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0052] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A filter screen cleaning device for a drum filter screen, characterized in that: The filter cleaning device comprises: Pneumatic pick; An elastic member, the elastic member having a first end and a second end opposite to each other, the first end of the elastic member being connected to the pick head of the pneumatic pick; A striking piece, wherein the striking piece has a connecting end and a working end opposite to each other, wherein the connecting end of the striking piece is connected to the second end of the elastic piece, and the working end of the striking piece is used to act on the slag particles compacted on the filter screen of the rotary drum filter.

2. The filter screen cleaning device for a rotary drum filter screen according to claim 1, characterized in that: The filter cleaning device also includes a connecting member, which is connected between the pick head and the first end of the elastic member.

3. The filter screen cleaning device for a rotary drum filter screen according to claim 2, characterized in that: The connecting member has a first end and a second end opposite to each other, the first end of the connecting member is connected to the pickaxe head, the second end of the connecting member is provided with a movable groove, the connecting end of the striking member can be movably arranged in the movable groove, the elastic member is arranged in the movable groove, and the first end of the elastic member abuts against the bottom of the movable groove.

4. The filter screen cleaning device for a rotary drum filter screen according to claim 3, characterized in that: The striking piece includes a connected movable rod and a striking plate, wherein the movable rod is the connecting end of the striking piece, and the striking plate is the working end of the striking piece.

5. The filter screen cleaning device for a rotary drum filter screen according to claim 4, characterized in that: The movable rod includes a first rod body and a second rod body that are connected. The diameter of the first rod body is larger than the diameter of the second rod body. The first rod body is connected to the striking plate. The second rod body can be movably arranged in the movable groove. The elastic member is a compression spring. The second end of the elastic member is sleeved on the second rod body.

6. The filter screen cleaning device for a rotary drum filter screen according to claim 5, characterized in that: The first rod body is loosely matched with the movable groove.

7. The filter screen cleaning device for a rotary drum filter screen according to any one of claims 3 to 6, characterized in that: A fixing groove is provided at the first end of the connecting member, and the pick head is arranged in the fixing groove.

8. The filter screen cleaning device for a rotary drum filter screen according to claim 7, characterized in that: A threaded hole communicating with the fixing groove is provided on the first end circumference of the connecting member; The filter screen cleaning device also includes a bolt, which is connected to the threaded hole and can extend into the fixing groove.

9. The filter screen cleaning device for a rotary drum filter screen according to claim 8, characterized in that: There are multiple threaded holes and multiple bolts, and the threaded holes and the bolts are arranged in a one-to-one correspondence.

10. The filter screen cleaning device for a rotary drum filter screen according to claim 9, characterized in that: The plurality of threaded holes are arranged at intervals along the axial direction of the connecting member.

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