Special filter bag for steel plant

Abstract

The utility model discloses a special filter bag for a steel plant, which relates to the technical field of dust removal filter bags and comprises a filter bag body, a middle ring is fixedly connected to the top end of the filter bag body, a telescopic cylinder is movably connected to the top end of the middle ring, a spring piece is arranged at the top of the telescopic cylinder, and clamping rods are fixedly connected to two ends of the spring piece. A top ring is fixedly connected to the top end of the telescopic cylinder, a first transverse frame is fixedly connected to the inner wall of the middle ring, a threaded rod movably penetrates through the top end of the first transverse frame in a threaded mode, a ball screw is arranged at the bottom of the first transverse frame, and the outer wall of the ball screw is movably sleeved with a lead screw nut. According to the utility model, a series of structures are arranged, so that the filter bag can be tightly clamped on the tubesheet hole, the filter bag can be kept in a relatively stable state after being mounted, auxiliary dust removal of the filter bag is realized, the probability that the filter bag is not cleaned thoroughly is reduced, and the filter bag can achieve a relatively good cleaning effect.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal filter bags, in particular to a special filter bag for steel plants. Background Art

[0002] The blast furnace in a steel plant is the most important equipment in steel production. During the operation of the blast furnace, the high-temperature flue gas in the furnace will contain a large amount of dust and harmful substances. It is necessary to use high-temperature resistant filter bags to filter the flue gas so that the dust in the flue gas can be adsorbed and the content of harmful substances in the flue gas can be effectively reduced.

[0003] However, when the existing special filter bags for steel mills are installed on the filters of blast furnaces, they are usually clamped on the flower plate holes with simple spring rings, so that when the filter bags are subsequently tightened with brackets, the spring rings clamped on the flower plate holes are easy to slide into the flower plate holes, resulting in the filter bags being unable to be stably installed on the flower plate holes, which is not conducive to the filter bags maintaining a stable state during use; in addition, the existing special filter bags usually remove the adsorbed dust particles on the surface of the filter bags by backblowing, and when the airflow pressure during backblowing is not well controlled, it is easy to cause the dust on the filter bags to be not cleaned cleanly, making it impossible for the filter bags to achieve a better cleaning effect. Utility Model Content

[0004] The purpose of the utility model is to provide a special filter bag for a steel plant to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special filter bag for steel mills, comprising a filter bag body, the top of the filter bag body is fixedly connected with a middle ring, the top of the middle ring is movably connected with a telescopic cylinder, the top of the telescopic cylinder is provided with a spring sheet, both ends of the spring sheet are fixedly connected with a clamping rod, the top of the telescopic cylinder is fixedly connected with a top ring, the inner wall of the middle ring is fixedly connected with a first cross frame, the top of the first cross frame is movably threaded with a screw, the bottom of the first cross frame is provided with a ball screw, the outer wall of the ball screw is movably sleeved with a screw nut, the outer wall of the screw nut is fixedly connected with an elastic rod, one end of the elastic rod is fixedly connected with a connecting rod, the interior of the connecting rod is provided with a cavity, the interior of the cavity is movably connected with a round ball, and one end of the connecting rod is fixedly connected with a brush sheet.

[0006] Preferably, a circular plate is fixedly connected to the top end of the screw rod, the screw rod is movably connected through the spring sheet, and the circular plate is movably connected to the top surface of the spring sheet.

[0007] Preferably, the clamping rod is movably connected to the telescopic cylinder, and the spring sheet is movably connected to the telescopic cylinder via the clamping rod.

[0008] Preferably, a bottom ring is fixedly connected to the inner side of the filter bag body, and a second cross frame is fixedly connected to the inner wall of the bottom ring.

[0009] Preferably, a driving motor is fixedly installed in the middle of the second cross frame, and the output end of the driving motor is engaged with the bottom end of the ball screw.

[0010] Preferably, the ball screw is movably connected to the first cross frame through the driving motor, and the screw nut is movably connected to the filter bag body through the ball screw.

[0011] Preferably, the brush piece is movably connected to the filter bag body through the screw nut.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For this special filter bag for steel mills, through the screw, spring piece, clamping rod, top ring and the first cross frame, the joint between the filter bag and the plate hole can be deformed by the extrusion of the spring piece, so that the clamping rod is clamped on one side of the plate hole, and at the same time, the top ring is pressed tightly on the other side of the plate hole, so that the filter bag can be clamped on the plate hole, which is beneficial to keep the filter bag in a relatively stable state after installation.

[0014] 2. For this special filter bag for steel mills, through the cavity, round beads, elastic rods and brush pieces, during the process of back blowing and cleaning dust of the filter bag, the inner wall of the filter bag can be wiped by the brush pieces vibrating through the round beads in the cavity, so that the dust particles adsorbed on the outer wall of the filter bag can be shaken off under the fit of the vibrating brush pieces, realizing auxiliary dust cleaning of the filter bag, thereby reducing the probability of incomplete cleaning of the filter bag and enabling the filter bag to achieve a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the ball screw and elastic rod structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the spring piece and screw structure of the present utility model;

[0018] Figure 4 is a schematic diagram of the screw nut and brush piece structure of the present utility model.

[0019] In the figure: 1. top ring; 2. screw rod; 3. spring piece; 4. telescopic cylinder; 5. first cross frame; 6. middle ring; 7. filter bag body; 8. clamping rod; 9. screw nut; 10. elastic rod; 11. connecting rod; 12. cavity; 13. round bead; 14. brush piece; 15. ball screw; 16. drive motor; 17. bottom ring; 18. second cross frame. Specific implementation manner

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 thus should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; 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 internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Such as Figures 1 to 4As shown in the figure, the special filter bag for the steel plant in this embodiment includes a filter bag body 7. The top end of the filter bag body 7 is fixedly connected with a middle ring 6. The top end of the middle ring 6 is movably connected with a telescopic cylinder 4. A spring piece 3 is arranged at the top of the telescopic cylinder 4. Both ends of the spring piece 3 are fixedly connected with clamping rods 8. The top end of the telescopic cylinder 4 is fixedly connected with a top ring 1. The inner wall of the middle ring 6 is fixedly connected with a first cross frame 5. A screw rod 2 movably penetrates through the top end of the first cross frame 5 in a threaded manner. A ball screw 15 is arranged at the bottom of the first cross frame 5. A screw nut 9 is movably sleeved on the outer wall of the ball screw 15. The outer wall of the screw nut 9 is fixedly connected with an elastic rod 10. One end of the elastic rod 10 is fixedly connected with a connecting rod 11. A cavity 12 is formed inside the connecting rod 11. A round bead 13 is movably connected inside the cavity 12. One end of the connecting rod 11 is fixedly connected with a brush piece 14.

[0024] Specifically, the top end of the filter bag body 7 is not closed, and the filter bag body 7 is made of linen material with better high-temperature resistance. The inner diameter of the middle ring 6 is adapted to the outer diameter of the filter bag body 7. The function of the telescopic cylinder 4 is to enable the top of the filter bag body 7 to be expanded outward by the deformed spring rod and the clamping rod 8, so that the clamping rod 8 and the top ring 1 at the top of the telescopic cylinder 4 can form a clamping structure and be respectively clamped on the two side walls of the hole in the flower plate, thereby realizing the stable clamping state of the filter bag on the hole in the flower plate. The function of the spring piece 3 is to change from a bent state to a slightly curved state after being pressed downward by the round plate, enabling the clamping rod 8 to expand toward the outer wall of the telescopic cylinder 4, thereby realizing the functions of the clamping rod 8 and the top ring 1 and clamping on the hole in the flower plate at the same time. The function of the first cross frame 5 is to support the middle ring 6, enabling the middle ring 6 to maintain a relatively stable state. At the same time, the first cross frame 5 enables the screw rod 2 to rotate normally inside the filter bag body 7, thereby realizing the extrusion of the spring piece 3 by the screw rod 2. The screw nut 9 and the ball screw 15 are used in combination, enabling the screw nut 9 to rotate smoothly along the ball screw 15. At the same time, a self-locking device is installed inside the screw nut 9, which can prevent the screw nut of the screw rod 2 from falling freely due to gravity, thereby facilitating the ball screw 15 to drive the screw nut 9 to rotate orderly inside the filter bag body 7. The elastic rod 10 has its own elasticity and can swing with the rotation of the screw nut 9 when the screw nut 9 rotates, thereby driving the connecting rod 11 and the brush piece 14 to shake, driving the round bead 13 inside the cavity 12 to vibrate, increasing the vibration amplitude of the end of the connecting rod 11 by the round bead 13, making the vibration amplitude of the brush piece 14 at the end of the connecting rod 11 more obvious, thereby facilitating the brush piece 14 to transmit the vibration to the filter bag body 7, enabling the dust particles on the outer wall of the filter bag body 7 to be shaken off by the vibration of the brush piece 14, thereby realizing the auxiliary cleaning of the filter bag body 7 and making the filter bag cleaner.

[0025] Furthermore, a circular plate is fixedly connected to the top end of the screw rod 2, the screw rod 2 is movably connected with the spring sheet 3, and the circular plate is movably connected with the top surface of the spring sheet 3. The function of the circular plate is to press down the spring sheet 3 so that the bent spring sheet 3 returns to its original slightly bent state, thereby enabling the clamping rods 8 at both ends of the spring sheet 3 to open the telescopic tube 4, so that the clamping rods 8 can cooperate with the top ring 1 to clamp the filter bag body 7 on the flower plate hole.

[0026] Furthermore, the clamping rod 8 is movably connected to the telescopic cylinder 4, and the spring sheet 3 is movably connected to the telescopic cylinder 4 through the clamping rod 8. After the clamping rods 8 at both ends of the spring sheet 3 open the telescopic cylinder 4, they will cooperate with the top ring 1, so that the top end of the filter bag body 7 is clamped on the flower plate hole, thereby facilitating the filter bag body 7 to maintain a relatively stable state after installation.

[0027] Furthermore, a bottom ring 17 is fixedly connected to the bottom of the inner side of the filter bag body 7, and a second cross frame 18 is fixedly connected to the inner wall of the bottom ring 17. The second cross frame 18 and the bottom ring 17 can make the bottom of the filter bag body 7 in an open state, thereby facilitating the filter bag body 7 to maintain stability.

[0028] Furthermore, a driving motor 16 is fixedly installed in the middle of the second cross frame 18, and the output end of the driving motor 16 is engaged with the bottom end of the ball screw 15. The driving motor 16 can drive the ball screw 15 to rotate after being energized, so that the ball screw 15 drives the screw nut 9 to rotate, so that the elastic rod 10 on the screw nut 9 is driven to swing.

[0029] Furthermore, the ball screw 15 is movably connected to the first cross frame 5 through the driving motor 16, and the screw nut 9 is movably connected to the filter bag body 7 through the ball screw 15. The top end of the ball screw 15 is in contact with the bottom end of the first cross frame 5, so that the filter bag body 7 can be supported by the first cross frame 5 and the second cross frame 18, so that the length of the filter bag body 7 is not easy to change during use.

[0030] Furthermore, the brush piece 14 is movably connected to the filter bag body 7 through the screw nut 9. The screw nut 9 drives the brush piece 14 to vibrate against the inner wall of the filter bag body 7 and transmits the vibration generated by the shaking to the outer wall of the filter bag body 7, thereby achieving auxiliary cleaning of dust particles on the outer wall of the filter bag body 7.

[0031] The usage method of this embodiment is as follows: When using the special filter bag for the steel mill, it is necessary to first pass the end where the bottom ring 17 of the filter bag body 7 is located through the hole in the flower plate, so that the bottom of the top ring 1 fits against the outer edge of one side wall of the flower plate hole. Then, turn the circular plate at the top of the screw rod 2, so that the screw rod 2 rotates by engaging along the top end of the first cross frame 5, and drives the circular plate to move downward, so that the circular plate presses down on the bent spring piece 3, causing the clamping rods 8 at both ends of the spring piece 3 to expand the telescopic cylinder 4 as the spring piece 3 deforms, so that the clamping rods 8 press the telescopic cylinder 4 against the outer edge of the other side wall of the flower plate hole, so that the top of the filter bag body 7 can be clamped in the flower plate hole. When it is necessary to assist in cleaning the outer wall of the filter bag body 7, the external power supply of the drive motor 16 can be connected, so that the drive motor 16 drives the ball screw 15 to rotate, so that the ball screw 15 serves as the driving body, driving the screw nut 9 to rotate along the ball screw 15, so that the elastic rod 10 on the outer wall of the screw nut 9 is driven to swing, driving the ball 13 in the cavity 12 of the connecting rod 11 to shake in the cavity 12, so that the shaking amplitude at the end of the connecting rod 11 becomes larger, driving the brush piece 14 at the end of the connecting rod 11 to shake and transmit the vibration generated by the shaking to the filter bag body 7, so that the dust adsorbed on the outer wall of the filter bag body 7 is shaken off due to the vibration, thus realizing the auxiliary cleaning of the filter bag body 7.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A special filter bag for steel plants, comprising a filter bag body (7), characterized in that: The top end of the filter bag body (7) is fixedly connected with a middle ring (6). The top end of the middle ring (6) is movably connected with a telescopic cylinder (4). A spring plate (3) is arranged at the top of the telescopic cylinder (4). Both ends of the spring plate (3) are fixedly connected with clamping rods (8). The top end of the telescopic cylinder (4) is fixedly connected with a top ring (1). The inner wall of the middle ring (6) is fixedly connected with a first cross frame (5). A screw rod (2) movably penetrates through the top end of the first cross frame (5) in a threaded manner. A ball screw (15) is arranged at the bottom of the first cross frame (5). A screw nut (9) is movably sleeved on the outer wall of the ball screw (15). An elastic rod (10) is fixedly connected to the outer wall of the screw nut (9). One end of the elastic rod (10) is fixedly connected with a connecting rod (11). A cavity (12) is formed inside the connecting rod (11). A round bead (13) is movably connected inside the cavity (12). One end of the connecting rod (11) is fixedly connected with a brush piece (14).

2. The special filter bag for steel plants according to claim 1, wherein: A circular plate is fixedly connected to the top end of the screw rod (2). The screw rod (2) movably penetrates through the spring plate (3), and the circular plate is movably connected to the top surface of the spring plate (3).

3. The special filter bag for steel plants according to claim 1, characterized in that: The clamping rod (8) is movably connected with the telescopic cylinder (4), and the spring plate (3) is movably connected with the telescopic cylinder (4) through the clamping rod (8).

4. A special filter bag for steel plants according to claim 1, characterized in that: A bottom ring (17) is fixedly connected to the bottom inside the filter bag body (7), and a second cross frame (18) is fixedly connected to the inner wall of the bottom ring (17).

5. The special filter bag for steel plants according to claim 4, characterized in that: A driving motor (16) is fixedly installed in the middle of the second cross frame (18), and the output end of the driving motor (16) is clamped and connected to the bottom end of the ball screw (15).

6. The special filter bag for steel plants according to claim 5, characterized in that: The ball screw (15) is movably connected with the first cross frame (5) through the driving motor (16), and the screw nut (9) is movably connected with the filter bag body (7) through the ball screw (15).

7. The special filter bag for steel plants according to claim 1, characterized in that: The brush piece (14) is movably connected with the filter bag body (7) through the screw nut (9).

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