Negative pressure smoke exhaust device for rolling mill

Abstract

The negative pressure smoke exhaust device comprises a main body frame, a smoke exhaust pipe is installed on the other side of the main body frame through screws, an installation plate is fixedly installed in the main body frame, a connecting shaft penetrates through one side of the installation plate through a bearing, and fan blades are fixedly connected to the side wall of one end of the connecting shaft in a sleeved mode. A movable plate and a flexible filter screen sleeve are arranged in the main body frame, a screw rod penetrates through the interior of the main body frame through a bearing, the side wall of the screw rod is sleeved with a screw rod sleeve, one end of the screw rod sleeve fixedly penetrates through the end face of the movable plate, and a guide rod slidably penetrates through the end face of the movable plate; the two ends of the guide rod are fixedly connected with the front end face and the rear end face in the main body frame correspondingly, and a motor is installed on the other side of the movable plate. The negative pressure smoke exhaust device for the rolling mill has the advantages that the movable plate is adopted, the transmission belt can be conveniently replaced in a labor-saving mode through the arranged movable plate, and the use practicability of the negative pressure smoke exhaust device for the rolling mill is improved.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill equipment technology, and more specifically, to a negative pressure exhaust device for rolling mills. Background Technology

[0002] A rolling mill is a piece of equipment used to realize the metal rolling process. Depending on the number of rolls, rolling mills can be divided into different types such as two-roll, four-roll, six-roll, eight-roll, twelve-roll, and eighteen-roll. A large amount of oil fumes are generated during the rolling process. Nowadays, negative pressure fume extraction devices are mostly used to complete the extraction of oil fumes. In actual use, they have the advantages of stable fume extraction, stable structure, and long service life.

[0003] The prior art discloses a novel negative pressure fan for smoke extraction, with publication number CN211144914U. This fan includes a main frame, a support plate, a convenient installation and disassembly device, rotating fan blades, a transmission belt, a motor, a slide rail, a pull ring, a filter screen, louvers, a locking groove, a baffle, a clamping plate, fixing holes, blades, a belt pulley, and a connecting hole. After installation, the negative pressure fan performs smoke extraction. First, the negative pressure fan is connected to a power source and the power switch is turned on. The louvers on the main frame automatically open due to a counterweight, and the YE-M- model motor begins to rotate. The transmission belt rotates via the pulley on the motor, which in turn rotates the rotating fan blades. The belt pulley is connected to the support plate via a shaft and a connecting hole. On the plate, the drive belt drives the pulley, which in turn drives the blades to rotate rapidly. This removes the smoke, heat, and dust from the indoor air, causing the indoor air pressure to drop and the air to become thinner, creating a negative pressure zone. Air flows into the room due to the pressure difference. When the filter screen is covered with a lot of oil and dust, it can be removed using the convenient installation and removal device. The clamping plate is fixed to the main frame with bolts through the fixing holes. Grasp the baffle by hand and pull it out of the gap between the clamping plate and the main frame through the buckle on the baffle. Then, grasp the filter screen and pull it upward to pull it out of the gap between the clamping plate and the main frame for cleaning. After cleaning, reinsert the filter screen into the gap between the clamping plate and the main frame, and then insert the baffle to lock it in place.

[0004] In order to ensure that the oil fumes inside the rolling mill can be extracted, the aforementioned utility model needs to ensure that the rotating fan blades can be rotated. The rotation of the rotating fan blades requires the use of a transmission belt, two pulleys and a motor. The gap between the two pulleys is fixed, which makes the installation and disassembly of the transmission belt inconvenient and reduces the practicality of this utility model.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a negative pressure exhaust device for rolling mills, which has the advantage of enabling labor-saving and convenient replacement of drive belts, thereby solving the problems mentioned in the background technology.

[0008] (II) Technical Solution

[0009] To achieve the aforementioned advantages of effortless and convenient replacement of drive belts, the specific technical solution adopted by this utility model is as follows:

[0010] A negative pressure smoke exhaust device for a rolling mill includes a main frame. A smoke exhaust pipe is installed on the other side of the main frame via screws. An installation plate is fixedly installed inside the main frame, and a connecting shaft passes through one side of the installation plate via a bearing. A fan blade is fixedly sleeved on one end of the connecting shaft. A movable plate and a flexible filter sleeve are arranged inside the main frame. A lead lever passes through the main frame via a bearing, and a lead screw sleeve is sleeved on the side wall of the lead lever. One end of the lead screw sleeve is fixedly inserted through the end face of the movable plate. A guide rod slides through the end face of the movable plate, and both ends of the guide rod are fixedly connected to the front and rear end faces of the main frame. A motor is installed on the other side of the movable plate, and a main pulley is sleeved on the output end of the motor. A driven pulley is sleeved on the other end of the connecting shaft. A transmission belt is sleeved on the side walls of the main pulley and the driven pulley. A first handwheel is installed at both ends of the lead lever.

[0011] Furthermore, the lead lever and the lead screw thread are mutually engaged.

[0012] Furthermore, both the main pulley and the driven pulley are located on the same vertical plane.

[0013] Furthermore, brush plates are installed on the top and bottom surfaces inside the main frame, and two sets of conveying rollers pass through the inside of the main frame via bearings, with the sidewalls of the two sets of conveying rollers contacting the inner wall of the flexible filter sleeve.

[0014] Furthermore, a second handwheel is installed at both ends of both sets of conveyor rollers.

[0015] Furthermore, a control panel is installed on the end face of the main frame, and the control panel is electrically connected to the motor via wires.

[0016] Furthermore, multiple sets of mounting bolts pass through one side of the main frame.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a negative pressure smoke exhaust device for rolling mills, which has the following beneficial effects:

[0019] (1) This utility model adopts a movable plate. In actual use of the negative pressure exhaust device for rolling mills, the main frame is first installed on the rolling mill body using multiple sets of mounting bolts. Using the control panel, the motor is started, and the output end of the motor drives the main pulley to rotate. The rotating main pulley drives the driven pulley to rotate through the transmission belt. The rotating driven pulley drives the fan blades to rotate through the connecting shaft. The rotating fan blades can create a negative pressure inside the rolling mill body. The oil fumes inside the rolling mill body are drawn into the exhaust pipe through the main frame. When it is necessary to replace the transmission belt, the exhaust pipe is disassembled, and then the two sets of first handwheels are rotated to rotate the lever. Because the lead lever and lead screw sleeve are threadedly engaged, rotating the lead lever can move the lead screw sleeve backward. The lead screw sleeve can drive the motor and main pulley backward via the moving plate. When the gap between the main pulley and the driven pulley narrows, the transmission belt can be removed and replaced with a new one. Then, rotating the two sets of first handwheels in the opposite direction will cause the lead screw sleeve and moving plate to move forward and reset. When the new transmission belt is taut, the two sets of first handwheels will stop. The guide rod can ensure the stability of the moving plate's forward and backward movement. The moving plate allows for easy and labor-saving replacement of the transmission belt, improving the practicality of the negative pressure exhaust device for the rolling mill.

[0020] (2) This utility model adopts a flexible filter sleeve. According to the above operation, when the motor is working, its output end causes the fan blades to rotate through the main pulley, the driven pulley and the transmission belt. The rotating fan blades can create a negative pressure inside the rolling mill. The oil fumes inside the rolling mill are drawn into the interior of the exhaust pipe through the main frame. The impurities inside the oil fumes will be intercepted by the flexible filter sleeve. When it is necessary to clean the impurities clogging the surface of the flexible filter sleeve, the operator can rotate the four sets of second handwheels by hand, which can cause the two sets of conveying rollers to push the flexible filter sleeve to rotate and move. The two sets of brush plates can wipe the impurities clogging the surface of the flexible filter sleeve. With the flexible filter sleeve, the blockage on the surface of the filter structure can be removed without stopping the exhaust operation, which ensures the continuous use of the negative pressure exhaust device for the rolling mill. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the negative pressure smoke exhaust device for rolling mills proposed in this utility model;

[0023] Figure 2 This is a side view of the movable plate proposed in this utility model;

[0024] Figure 3This is a perspective view of the conveyor roller proposed in this utility model;

[0025] Figure 4 This utility model proposes Figure 1 Enlarged view of A in the middle;

[0026] Figure 5 This utility model proposes Figure 1 A magnified view of B in the middle.

[0027] In the picture:

[0028] 1. Main frame; 2. Exhaust pipe; 3. Mounting bolts; 4. Mounting plate; 5. Connecting shaft; 6. Fan blade; 7. Moving plate; 8. Motor; 9. Main pulley; 10. Driven pulley; 11. Transmission belt; 12. Flexible filter sleeve; 13. Lead screw lever; 14. Lead screw sleeve; 15. Guide rod; 16. First handwheel; 17. Conveyor roller; 18. Second handwheel; 19. Brush plate. Detailed Implementation

[0029] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0030] According to an embodiment of the present invention, a negative pressure smoke exhaust device for rolling mills is provided.

[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-5As shown, the negative pressure exhaust device for rolling mills according to an embodiment of the present invention includes a main frame 1. An exhaust pipe 2 is installed on the other side of the main frame 1 by screws. An installation plate 4 is fixedly installed inside the main frame 1, and a connecting shaft 5 passes through one side of the installation plate 4 through a bearing. A fan blade 6 is fixedly sleeved on one end of the connecting shaft 5. A movable plate 7 and a flexible filter sleeve 12 are provided inside the main frame 1. A wire lever 13 passes through the main frame 1 through a bearing, and a screw rod sleeve 14 is sleeved on the side wall of the wire lever 13. One end of the screw rod sleeve 14 is fixedly inserted through the end face of the movable plate 7. The end face of the movable plate 7 is slidably penetrated by a guide rod 15, and the two ends of the guide rod 15 are fixedly connected to the front and rear end faces of the main frame 1 respectively. A motor 8 is installed on the other side of the movable plate 7, and a main pulley 9 is sleeved on the output end of the motor 8. A driven pulley 10 is sleeved on the side wall of the other end of the connecting shaft 5. A transmission belt 11 is sleeved on the side walls of the main pulley 9 and the driven pulley 10. A first handwheel 16 is installed at both ends of the wire lever 13. With the movable plate 7, the transmission belt 11 can be replaced with ease and effort, which improves the practicality of the negative pressure exhaust device for the rolling mill.

[0032] In one embodiment, the lead lever 13 and the lead screw sleeve 14 are threaded together to facilitate adjustment of the working position of the lead screw sleeve 14.

[0033] In one embodiment, the main pulley 9 and the driven pulley 10 are both located on the same vertical plane to avoid the transmission belt 11 being unable to be used due to misalignment of the main pulley 9 and the driven pulley 10.

[0034] In one embodiment, brush plates 19 are installed on the top and bottom surfaces inside the main frame 1. Two sets of conveying rollers 17 pass through the inside of the main frame 1 via bearings. The side walls of the two sets of conveying rollers 17 are in contact with the inner wall of the flexible filter sleeve 12. Through the flexible filter sleeve 12, the blockage on the surface of the filter structure can be removed without stopping the smoke exhaust operation, thus ensuring the continuous use of the negative pressure smoke exhaust device for the rolling mill.

[0035] In one embodiment, a second handwheel 18 is installed at both ends of the two sets of conveyor rollers 17.

[0036] In one embodiment, a control panel is installed on the end face of the main frame 1, and the control panel is electrically connected to the motor 8 via wires. The control panel can be implemented by simple programming by those skilled in the art, and is common knowledge in the art. It is only used and not modified, so the control method and circuit connection will not be described in detail.

[0037] In one embodiment, multiple sets of mounting bolts 3 pass through one side of the main frame 1.

[0038] Working principle:

[0039] In actual use of the negative pressure exhaust device for the rolling mill, first use multiple sets of mounting bolts 3 to install the main frame 1 onto the rolling mill body. Using the control panel, start the motor 8. The output of the motor 8 will drive the main pulley 9 to rotate. The rotating main pulley 9 drives the driven pulley 10 to rotate via the transmission belt 11. The rotating driven pulley 10 drives the fan blades 6 to rotate via the connecting shaft 5. The rotating fan blades 6 create a negative pressure inside the rolling mill body. The oil fumes inside the rolling mill body are drawn into the exhaust pipe 2 through the main frame 1. When it is necessary to replace the transmission belt... At 11 o'clock, disassemble the exhaust pipe 2, and then rotate the two sets of first handwheels 16 to rotate the lead lever 13. Since the lead lever 13 and the lead screw sleeve 14 are threadedly engaged, the rotating lead lever 13 can move the lead screw sleeve 14 backward. The lead screw sleeve can drive the motor 8 and the main pulley 9 backward through the moving plate 7. When the gap between the main pulley 9 and the driven pulley 10 decreases, the transmission belt 11 can be removed and replaced with a new transmission belt 11. Then, rotate the two sets of first handwheels 16 in the opposite direction. The reverse rotation of the lead lever 13 can move the lead screw sleeve 14 and the moving plate 7 backward. When the new drive belt 11 is tightened, the two sets of first handwheels 16 stop. The guide rod 15 ensures the stability of the forward and backward movement of the moving plate 7. The moving plate 7 allows for easy and convenient replacement of the drive belt 11, improving the practicality of the negative pressure exhaust device for the rolling mill. Simultaneously, as can be seen from the above operation, when the motor 8 is working, its output end rotates the fan blades 6 via the main pulley 9, the driven pulley 10, and the drive belt 11. The rotating fan blades 6 create a negative pressure inside the rolling mill, allowing the oil fumes inside the mill to escape through the main pulley 9. The frame 1 is drawn into the interior of the exhaust pipe 2. Impurities inside the oil fume are intercepted by the flexible filter sleeve 12. When it is necessary to clean the impurities clogging the surface of the flexible filter sleeve 12, the operator can rotate the four sets of second handwheels 18 by hand, which will cause the two sets of conveying rollers 17 to push the flexible filter sleeve 12 to rotate and move. The two sets of brush plates 19 can wipe the impurities clogging the surface of the flexible filter sleeve 12. Through the flexible filter sleeve 12, the blockage on the surface of the filter structure can be removed without stopping the exhaust operation, which ensures the continuous use of the negative pressure exhaust device for the rolling mill.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A negative pressure smoke exhaust device for a rolling mill, characterized by comprising: The utility model provides a smoke exhaust device, including main body frame (1), the other side of main body frame (1) is installed with smoke exhaust pipe (2) through screw, the inside fixed mounting of main body frame (1) is installed with mounting plate (4), and the one side of mounting plate (4) is penetrated with connecting shaft (5) through bearing, and one end lateral wall of connecting shaft (5) is fixedly sleeved with fan blade (6), the inside of main body frame (1) is provided with moving plate (7) and flexible filter screen cover (12), the inside of main body frame (1) is penetrated with screw lever (13) through bearing, and the lateral wall of screw lever (13) is sleeved with screw sleeve (14), one end of screw sleeve (14) is fixedly penetrated the end surface of moving plate (7), the end surface of moving plate (7) is slidably penetrated with guide rod (15), and the both ends of guide rod (15) are fixedly connected with the inside front and rear end surface of main body frame (1) respectively, the other side of moving plate (7) is installed with motor (8), and the output of motor (8) is sleeved with main pulley (9), the other end lateral wall of connecting shaft (5) is sleeved with from pulley (10), the lateral wall of main pulley (9) and from pulley (10) is sleeved with transmission belt (11), and the both ends of screw lever (13) are installed with first hand wheel (16).

2. The negative pressure smoke exhaust device for a rolling mill according to claim 1, characterized by The screw lever (13) and the screw sleeve (14) are threadedly engaged with each other.

3. The negative pressure smoke exhaust device for a rolling mill according to claim 1, characterized by The main pulley (9) and the from pulley (10) are located on the same vertical plane.

4. The negative pressure smoke exhaust device for a rolling mill according to claim 1, characterized by The inside top surface and the inside bottom surface of the main body frame (1) are both installed with brush plates (19).

5. The negative pressure smoke exhaust device for a rolling mill according to claim 4, characterized by The two groups of conveying rollers (17) are both installed with second hand wheels (18) at the two ends.

6. The negative pressure smoke exhaust device for a rolling mill according to claim 1, characterized by The end surface of the main body frame (1) is installed with a control panel, and the control panel is electrically connected with the motor (8) through wires.

7. The negative pressure smoke exhaust device for a rolling mill according to claim 1, characterized by A plurality of mounting bolts (3) penetrate the side of the main body frame (1).

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