A device for treating waste filter paper of emulsion in steel rolling

Abstract

The present invention proposes a device for treating waste filter paper of emulsion in steel rolling, comprising a filter paper collecting box, a containing chamber arranged in the filter paper collecting box, a filter paper receiving hopper connected to the containing chamber arranged on the top of the filter paper collecting box, a plurality of filtrate holes arranged on the bottom of the containing chamber, a filter paper discharge port and a filter paper push port respectively arranged on the two side walls at one end in the length direction of the filter paper collecting box; a first extrusion device, comprising a first extrusion plate arranged in the containing chamber, and a first driving element for driving the first extrusion plate to move horizontally; a first blocking device, comprising a first baffle arranged on the filter paper discharge port, and a second driving element for driving the first baffle to block or open the filter paper discharge port; a pushing device, comprising a pushing plate arranged on the filter paper push port, and a third driving element for driving the pushing plate to move toward the filter paper discharge port. The present invention can realize the dry and wet separation of waste filter paper, and carry out reduction treatment, thereby reducing pollution to the environment.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical steel rolling, and in particular to a device for treating waste filter paper of emulsion in steel rolling. Background Art

[0002] At present, an acid rolling mill is often used in the steel production lines of various steel production enterprises. The acid rolling mill is mainly used for tin-plated substrates and ordinary cold-rolled strip products, and emulsion is required for lubrication and cooling during its rolling process. Since the maximum speed of the acid rolling mill is 1800mpm, the thinnest rolling specification reaches 0.12mm, the maximum compression ratio reaches more than 91%, and the T material ratio reaches more than 70%, the amount of iron powder generated in the emulsion during the rolling process is also much higher than that of other acid rolling production lines, resulting in a high concentration of the emulsion. In order to ensure the cleanliness of the emulsion, the emulsion is usually filtered in a vacuum filter for recycling. The filter paper will be continuously consumed in the filtration process of the vacuum filter, and these discarded filter papers are usually mixed with domestic garbage for treatment. Since liquid residues such as waste oil and waste sludge will remain on the surface of the filter paper, it will cause serious pollution and damage to the ecological environment, soil environment and water quality. Summary of the invention

[0003] In view of this, the present invention proposes a device for treating waste filter paper of emulsion in steel rolling, which can realize dry-wet separation operation of waste filter paper and reduce pollution to the environment.

[0004] The technical solution of the present invention is implemented as follows: The present invention provides a device for treating waste filter paper of emulsion in steel rolling, comprising a filter paper collecting box, a first extrusion device, a blocking device and a pushing device; wherein,

[0005] A filter paper collecting box, wherein a containing chamber is arranged in the filter paper collecting box, a filter paper receiving hopper connected to the containing chamber is arranged on the top of the filter paper collecting box, a plurality of filtrate holes are arranged on the bottom of the containing chamber, and a filter paper discharge port and a filter paper pushing port are respectively arranged on the two side walls at one end in the length direction of the filter paper collecting box;

[0006] The first extrusion device comprises a first extrusion plate arranged in the accommodating chamber, and a first driving element for driving the first extrusion plate to move horizontally along the length direction of the box body;

[0007] The first blocking device comprises a first baffle plate arranged on the filter paper discharge port, and a second driving element for driving the first baffle plate to block or open the filter paper discharge port;

[0008] The pushing device comprises a pushing plate arranged on the filter paper pushing port and a third driving element used for driving the pushing plate to move toward the filter paper discharging port.

[0009] On the basis of the above technical solution, preferably, the filter paper discharge port and the filter paper push port correspond in position and are equal in size.

[0010] On the basis of the above technical solution, preferably, a first movable cavity connected to the filter paper pushing port is further provided on the side wall of the filter paper collecting box, and the pushing plate is provided in the first movable cavity.

[0011] On the basis of the above technical solution, preferably, it also includes a second blocking device, which includes a second baffle plate arranged on the filter paper pushing port, and a fourth driving element for driving the second baffle plate to block or open the filter paper pushing port.

[0012] Further, preferably, a first slot is provided in the filter paper discharge port along the length direction of the filter paper collecting box, the first baffle is inserted into the first slot, and can move horizontally along the first slot; a second slot is provided in the filter paper pushing port along the length direction of the filter paper collecting box, the second baffle is inserted into the second slot, and can move horizontally along the second slot.

[0013] On the basis of the above technical solution, preferably, a first limit block is provided on the side wall of the accommodating chamber along the length direction, the first limit block is flush with the edge of the filter paper outlet close to the first extrusion device, and the first extrusion plate is provided with a first limit groove matching the first limit block.

[0014] On the basis of the above technical solution, preferably, it also includes a second extrusion device, and a second movable cavity connected to the accommodating chamber is opened on the top of the filter paper collection box corresponding to the filter paper discharge port, and the second extrusion device includes a second extrusion plate arranged in the second movable cavity, and a fifth driving element for driving the second extrusion plate to move in the vertical direction of the box.

[0015] Further, preferably, an installation cavity is provided in the second extrusion plate, a plurality of movable holes connected to the installation cavity are provided on the bottom surface of the second extrusion plate, the movable holes are opposite to the filtrate holes, a movable plate is horizontally provided in the installation cavity, pins connected with the movable holes are provided at the bottom of the movable plate, and a sixth driving element for driving the movable plate to move up and down is provided on the top of the second extrusion plate.

[0016] Further, preferably, a collecting hopper is provided on the bottom surface of the filter paper collecting box, and a sewage pipe is provided at the bottom of the collecting hopper.

[0017] The present invention has the following beneficial effects compared with the prior art:

[0018] (1) The device for treating waste filter paper of emulsion in steel rolling disclosed by the present invention receives waste filter paper from a vacuum filter by setting a filter paper collecting box, and compresses the waste filter paper by using a first extrusion device. On the one hand, during the compression process, the sludge on the waste filter paper can be separated by extrusion and discharged through the filtrate hole, thereby realizing dry-wet separation of the waste filter paper; on the other hand, the volume of the compressed filter paper is reduced to form a block, and the compressed block-shaped waste filter paper can be pushed out from the filter paper discharge port by a pushing device, thereby realizing the reduction of waste filter paper and reducing pollution to the environment.

[0019] (2) After the first squeezing device squeezes the waste filter paper along the length direction of the filter paper collecting box, the pushing device can squeeze the waste filter paper for the second time along the width direction of the filter paper collecting box, so that the oil sludge is separated more thoroughly during the compression process of the waste filter paper, and the compression yield is smaller.

[0020] (3) After the first extrusion device and the pushing device compress the filter paper horizontally in two directions, the second extrusion device can perform a third extrusion on the filter paper in the vertical direction, so that the oil sludge is separated more thoroughly during the process of the filter paper being compressed into blocks, thereby improving the dry-wet separation efficiency of the waste filter paper and greatly reducing the oil sludge attached to the waste filter paper, thereby reducing the pollution of the waste filter paper to the environment.

[0021] (4) By providing an installation cavity in the second extrusion plate, a plurality of movable holes connected to the installation cavity are provided on the bottom surface of the second extrusion plate, the movable holes are directly opposite to the filtrate holes, a movable plate is horizontally provided in the installation cavity, and a pin plugged into the movable hole is provided at the bottom of the movable plate. The filtrate holes directly below the second extrusion plate can be cleaned to avoid the filtrate holes being blocked due to the oil sludge drying after the waste filter paper is separated into dry and wet parts and before the next operation, thereby affecting the discharge of the oil sludge from the filtrate holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the emulsion waste filter paper processing device disclosed in the present invention;

[0024] Figure 2 It is a schematic diagram of the three-dimensional structure of the filter paper collecting box disclosed in the present invention;

[0025] Figure 3 It is a first side structural schematic diagram of the emulsion waste filter paper processing device disclosed in the present invention;

[0026] Figure 4 It is a second side structural schematic diagram of the emulsion waste filter paper processing device disclosed in the present invention;

[0027] Figure 5 It is a schematic diagram of the planar structure of the second extrusion device disclosed in the present invention. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figure 1 As shown, combined Figure 2-4 The embodiment of the present invention discloses a device for treating waste filter paper of emulsion in steel rolling, comprising a filter paper collecting box 1, a first extrusion device 2, a first blocking device 3 and a pushing device 4.

[0030] The filter paper collection box 1 is square-shaped, and a receiving chamber 11 is arranged in the filter paper collection box 1 along the length direction. A filter paper receiving hopper 12 connected to the receiving chamber 11 is arranged on the top of the filter paper collection box 1. After the waste filter paper is discharged from the vacuum filter, it falls into the receiving chamber 11 through the filter paper receiving hopper 12. As for the prior art, after the waste filter paper is stacked to a certain height or measured to a certain number of meters in the receiving chamber 11, it is shortened by a shearing mechanism so that the waste filter paper of a certain density falls into the receiving chamber 11, thereby realizing dry-wet separation in the receiving chamber 11. A plurality of filtrate holes 13 are arranged on the bottom surface of the receiving chamber 11, and the waste oil and sludge separated from the waste filter paper will be discharged through the filtrate holes 13. A filter paper discharge port 14 and a filter paper push port 15 are respectively provided on both side walls at one end in the length direction of the filter paper collecting box 1. The filter paper push port 15 is used to install a push device 4 to facilitate pushing out the separated waste filter paper from the filter paper discharge port 14.

[0031] The first extrusion device 2 includes a first extrusion plate 21 arranged in the accommodating chamber 11, and a first driving element 22 for driving the first extrusion plate 21 to move horizontally along the length direction of the box; thus, under the action of the first driving element 22, the first extrusion plate 21 pushes and squeezes the waste filter paper along the length direction of the filter paper collecting box 1, and during the extrusion process, the oil or sludge on the waste filter paper is separated and discharged through the filtrate hole 13.

[0032] The first blocking device 3 includes a first baffle 31 arranged on the filter paper discharge port 14, and a second driving element 32 used to drive the first baffle 31 to block or open the filter paper discharge port 14; in the process of horizontal extrusion from one end to the other end of the accommodating chamber 11 through the first extrusion device 2, in order to prevent the waste filter paper from being directly discharged from the filter paper discharge port 14 during the extrusion process, the filter paper discharge port 14 can be blocked in advance through the first baffle 31, and after the extrusion is completed, the filter paper discharge port 14 is opened through the first baffle 31.

[0033] The pushing device 4 includes a pushing plate 41 disposed on the filter paper pushing port 15, and a third driving element 42 for driving the pushing plate 41 to move toward the filter paper outlet 14. In the initial device, the pushing plate 41 is flush with the filter paper pushing port 15, so that the pushing plate 41 can be used to block the filter paper pushing port 15. When the first extrusion device 2 completes the compression and separation of the waste filter paper, the first baffle 31 is opened, and driven by the third driving element 42, the pushing plate 41 pushes the compressed waste filter paper out of the filter paper outlet 14, thereby realizing the collection by the fixed tool.

[0034] By adopting the above technical scheme, the waste filter paper can be compressed by the first extrusion device 2. On the one hand, during the compression process, the sludge on the waste filter paper can be separated by extrusion and discharged through the filtrate hole 13, thereby realizing the dry and wet separation of the waste filter paper; on the other hand, the volume of the compressed filter paper is reduced to form a block, and the compressed block waste filter paper can be pushed out from the filter paper discharge port 14 by the pushing device 4, so as to realize the reduction of the waste filter paper and reduce the pollution to the environment.

[0035] Specifically, the present invention is also implemented through the following technical solutions.

[0036] In this embodiment, the filter paper discharge port 14 and the filter paper push port 15 correspond in position and are of equal size, so that the push plate 41 can conveniently push the waste filter paper out of the filter paper discharge port 14 .

[0037] Since the filter paper pushing port 15 has a small cross section, the pushing plate 41 can block the filter paper pushing port 15, but the moving space in the filter paper pushing port 15 is preferred. Therefore, in order to allow the pushing plate 41 to move along the filter paper pushing port 15 relative to the filter paper pushing port 15, a first movable cavity 16 connected to the filter paper pushing port 15 is further provided on the side wall of the filter paper collecting box 1, and the pushing plate 41 is arranged in the first movable cavity 16. As a result, the pushing plate 41 can have a certain movable space, which is convenient for entering and exiting along the filter paper pushing port 15.

[0038] In the process of horizontally extruding the waste filter paper by the first extrusion device 2, although the filter paper push port 15 can be blocked by the push plate 41, it is necessary to accurately control the movement stroke of the push plate 41, and the push plate 41 needs to be flush with the inner surface of the filter paper push port 15, which makes the operation difficult. Therefore, in view of the above problems, the technical solution adopted by the present invention is to design a second blocking device 6, and the second blocking device 6 includes a second baffle 61 arranged on the filter paper push port 15, and a fourth driving element 62 for driving the second baffle 61 to block or open the filter paper push port 15. Therefore, when the first extrusion device 2 is horizontally extruding the waste filter paper, the filter paper push port 15 is blocked by the second baffle 61, and when the push device 4 is required to push, the second baffle 61 opens the filter paper push port 15.

[0039] On the basis of the above technical solution, a first slot 141 is provided in the filter paper discharge port 14 along the length direction of the filter paper collection box 1, and the first baffle 31 is inserted in the first slot 141 and can move horizontally along the first slot 141; a second slot 151 is provided in the filter paper push port 15 along the length direction of the filter paper collection box 1, and the second baffle 61 is inserted in the second slot 151 and can move horizontally along the second slot 151. With the above technical solution, the first baffle 31 can be horizontally inserted into the first slot 141 along the length direction of the filter paper collection box 1. On the one hand, the first baffle 31 is inserted in the first slot 141, so that the first baffle 31 firmly blocks the filter paper discharge port 14, and on the other hand, it is convenient for the first baffle 31 to move in the horizontal direction. The second baffle 61 can be horizontally inserted into the second slot 151 along the length direction of the filter paper collecting box 1. On the one hand, the second baffle 61 is inserted into the second slot 151 so that the second baffle 61 firmly blocks the filter paper pushing port 15. On the other hand, it is convenient for the second baffle 61 to move in the horizontal direction.

[0040] As an embodiment of the present invention, the first extrusion plate 21 is used to extrude the waste filter paper in length. After the extrusion and dry-wet separation are completed, the volume of the waste filter paper is reduced to form a sheet or strip. At this time, in order to push out the compressed waste filter paper, the first extrusion plate 21 needs to move in the opposite direction to make room for the pushing plate 41 to push the waste filter paper. At this time, the pushing plate 41 can push the waste filter paper out of the filter paper outlet 14.

[0041] As another embodiment of the present invention, in order to fully compress the filter paper so as to better separate the dry and wet parts, the waste filter paper can be squeezed in the width direction after the waste filter paper is squeezed in the length direction. Therefore, the pushing device 4 in the present invention can squeeze the waste filter paper along the width direction of the filter paper collection box 1. During the squeezing of the pushing plate 41 toward the filter paper outlet 14, the waste filter paper will be compressed between the first baffle 31 and the pushing plate 41. After being compressed, the waste filter paper will be compressed, which will cause the length of the waste filter paper to be larger than the filter paper outlet 14, and the waste filter paper will not be discharged from the filter paper outlet 14 in the end.

[0042] Therefore, in order to solve the above technical problems, the technical solution adopted by the present invention is: a first limit block 19 is arranged on the side wall of the accommodating chamber 11 along the length direction, the first limit block 19 is flush with the edge of the filter paper outlet 14 close to the first extrusion device 2, and a first limit groove 211 matched with the first limit block 19 is arranged on the first extrusion plate 21. Therefore, when the first extrusion plate 21 is extruded in the horizontal direction, the first extrusion plate 21 is limited in stroke by the cooperation between the first limit block 19 and the first limit groove 211. At this time, the push plate 41, driven by the third driving element 42, can extrude the waste filter paper on the other side in the horizontal direction, and the push plate 41 can slide along the side wall of the first extrusion plate 21 during the movement. After completing the secondary extrusion, the volume of the waste filter paper is further reduced, and the oil sludge separation is more thorough. Its length scale is equivalent to the size of the filter paper outlet 14, so that the compressed block waste filter paper can be easily pushed out by the push plate 41.

[0043] The present invention further proposes an implementation method based on the above-mentioned embodiment. In order to further compress the volume of waste filter paper so as to achieve more efficient dry-wet separation, the present invention also includes a second extrusion device 7. A second movable cavity 17 connected to the accommodating chamber 11 is provided on the top of the filter paper collection box 1 corresponding to the filter paper discharge port 14. The second extrusion device 7 includes a second extrusion plate 71 arranged in the second movable cavity 17, and a fifth driving element 72 for driving the second extrusion plate 71 to move along the vertical direction of the box. With the above-mentioned technical solution, in the initial state, under the drive of the fifth driving element 72, the bottom surface of the second extrusion plate 71 is flush with the top surface of the accommodating chamber 11, so as to facilitate the first extrusion plate 21 and the push plate 41 to complete the compression of the waste filter paper in the length and width directions. After the compression in the length and width directions is completed, the first extrusion plate 21 remains in place, and the push plate 41 moves in the opposite direction to avoid the second extrusion plate 71. The fifth driving element 72 drives the second extrusion plate 71 to move downward, thereby compressing the waste filter paper in the height direction, thereby further reducing the volume of the waste filter paper and making the dry and wet separation more thorough.

[0044] Preferably, the push plate 41 moves away from the filter paper discharge port until the surface of the push plate is flush with the side wall of the second extrusion plate, thereby making the volume of the waste filter paper compressed in the vertical direction smaller and achieving more complete dry and wet separation.

[0045] The present invention also includes the following implementation mode: since the waste filter paper falling from the vacuum filter into the filter paper collection box 1 needs to be cut off at regular intervals and processed, when the first filter paper is completed through the dry-wet separation operation, the sludge on the waste filter paper will remain in the filtrate hole 13 located directly below the second squeezing plate 71. Since the next operation interval is long, the sludge in the filtrate hole 13 may be air-dried, thereby causing the hole to be blocked. Therefore, the present invention adopts the following technical solutions to solve the above technical problems:

[0046] See attached Figure 5 As shown, a mounting cavity 711 is provided in the second extrusion plate 71, a plurality of movable holes 712 connected to the mounting cavity 711 are provided on the bottom surface of the second extrusion plate 71, and the movable holes 712 are directly opposite to the filtrate hole 13, a movable plate 713 is horizontally provided in the mounting cavity 711, a pin 714 plugged into the movable hole 712 is provided at the bottom of the movable plate 713, and a sixth driving element 715 for driving the movable plate 713 to move up and down is provided on the top of the second extrusion plate 71. With the above technical solution, when compression is performed, the bottom end of the pin 714 is just flush with the bottom surface of the movable hole 712, ensuring that the pin 714 does not leak out, and the waste filter paper is conveniently compressed. When the waste filter paper is compressed and the compressed block-shaped waste filter paper is pushed out through the filter paper discharge port 14, the second extrusion plate 71 is first driven by the fifth driving element 72 to fit the bottom surface of the accommodating chamber 11, and then the movable plate 713 is driven by the sixth driving element 715 to move downward in the installation cavity 711, so that the pin 714 passes through the movable hole 712 and is inserted into the filtrate hole 13, so as to push out the sludge in the filtrate hole 13, thereby preventing the sludge from clogging the hole.

[0047] In the above embodiment, the first driving element 22 , the second driving element 32 , the third driving element 42 , the fourth driving element 62 , the fifth driving element 72 and the sixth driving element 715 may be hydraulic cylinders or pneumatic cylinders.

[0048] As an optional embodiment, a hopper 18 is provided at the bottom of the filter paper collecting box 1, and a drain pipe 19 is provided at the bottom of the hopper 18. The sludge discharged through the filtrate holes 13 enters the hopper 18 and is discharged to the collection area through the drain pipe 19.

[0049] The filter paper outlet 14 of the present invention can be provided with a waste filter paper receiving box, or can be transported to a designated area by a conveyor belt.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for treating waste filter paper of emulsion in steel rolling, characterized by: It comprises a filter paper collection box (1), a first extrusion device (2), a first blocking device (3) and a material pushing device (4); wherein: A filter paper collecting box (1), wherein a receiving chamber (11) is arranged in the filter paper collecting box (1), a filter paper receiving hopper (12) connected to the receiving chamber (11) is arranged on the top of the filter paper collecting box (1), a plurality of filtrate holes (13) are arranged on the bottom surface of the receiving chamber (11), and a filter paper discharge port (14) and a filter paper push port (15) are respectively arranged on both side walls at one end in the length direction of the filter paper collecting box (1); A first extrusion device (2) comprising a first extrusion plate (21) arranged in the accommodating chamber (11), and a first driving element (22) for driving the first extrusion plate (21) to move horizontally along the length direction of the box body; A first blocking device (3) comprising a first baffle (31) arranged on the filter paper discharge port (14), and a second driving element (32) used for driving the first baffle (31) to block or open the filter paper discharge port (14); A pushing device (4) comprising a pushing plate (41) disposed on the filter paper pushing port (15), and a third driving element (42) used for driving the pushing plate (41) to move in the direction of the filter paper discharge port (14); The filter paper discharge port (14) and the filter paper push port (15) are located in corresponding positions and are equal in size; A first limit block (19) is provided on the side wall of the accommodating chamber (11) along the length direction, the first limit block (19) is flush with the edge of the filter paper outlet (14) in the direction close to the first extrusion device (2), and the first extrusion plate (21) is provided with a first limit groove (211) that matches the first limit block (19); The filter paper collecting box (1) further comprises a second extrusion device (7); a second movable cavity (17) connected to the accommodating chamber (11) is provided on the top of the filter paper collecting box (1) directly above the filter paper discharge port (14); the second extrusion device (7) comprises a second extrusion plate (71) arranged in the second movable cavity (17), and a fifth driving element (72) for driving the second extrusion plate (71) to move in the vertical direction of the box; The second extrusion plate (71) is provided with an installation cavity (711), the bottom surface of the second extrusion plate (71) is provided with a plurality of movable holes (712) connected to the installation cavity (711), the movable holes (712) are directly opposite to the filtrate holes (13), a movable plate (713) is horizontally arranged in the installation cavity (711), the bottom of the movable plate (713) is provided with plug pins (714) plugged into the movable holes (712), and the top of the second extrusion plate (71) is provided with a sixth driving element (715) for driving the movable plate (713) to move up and down; A first movable cavity (16) in communication with the filter paper pushing port (15) is also provided on the side wall of the filter paper collection box (1), and the pushing plate (41) is arranged in the first movable cavity (16).

2. The device for treating waste filter paper of emulsion in steel rolling as claimed in claim 1, characterized in that: The invention also comprises a second blocking device (6), wherein the second blocking device (6) comprises a second baffle (61) arranged on the filter paper pushing port (15), and a fourth driving element (62) used for driving the second baffle (61) to block or open the filter paper pushing port (15).

3. The device for treating waste filter paper of emulsion in steel rolling as claimed in claim 2, characterized in that: A first slot (141) is provided in the filter paper discharge port (14) along the length direction of the filter paper collection box (1), and the first baffle (31) is inserted into the first slot (141) and can move horizontally along the first slot (141); a second slot (151) is provided in the filter paper push port (15) along the length direction of the filter paper collection box (1), and the second baffle (61) is inserted into the second slot (151) and can move horizontally along the second slot (151).

4. The device for treating waste filter paper of emulsion in steel rolling as claimed in claim 1, characterized in that: A material collecting hopper (18) is provided on the bottom surface of the filter paper collecting box (1), and a sewage discharge pipe (181) is provided at the bottom of the material collecting hopper (18).

Images