Eccentric air bellow butterfly valve device, sintering machine air bellow and sintering machine

Abstract

The utility model provides an eccentric air bellow butterfly valve device, a sintering machine air bellow and a sintering machine. The eccentric air bellow butterfly valve device comprises a valve body, a valve plate, a rotating shaft and a driving part, the valve body is used for being installed on an air bellow, the valve plate is connected with the rotating shaft, the rotating shaft is rotationally arranged in the valve body, the valve plate is asymmetrical about the axis of the rotating shaft, and the driving part is used for driving the rotating shaft to rotate. The valve plate and the rotating shaft form an eccentric valve element due to the fact that the valve plate is asymmetrical about the axis of the rotating shaft, the valve plate has the tendency of autorotation in the valve body, then the rotating shaft is driven by the driving part to rotate, and rotation of the valve plate is achieved under the double effects of self-weight deflection of the valve plate and the driving part. The requirement for output power of the driving part can be lowered, so that the valve plate is opened easily, and the efficiency of cleaning sintered ore bulk materials deposited on the valve plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machines, and particularly to an eccentric type air box butterfly valve device, a sintering machine air box and a sintering machine. Background Art

[0002] In iron and steel smelting, as an important part of the front-end equipment of iron-making, the stable operation of the sintering machine and the precise control of the air volume are directly related to the quality of sintered ore and even the quality of molten iron in the blast furnace. The control of the air volume of the sintering machine is mainly achieved by operating the opening degree of the air box butterfly valve. Therefore, the reliability of the air box butterfly valve is particularly crucial. At present, in the common sintering machine air box butterfly valve, sintered ore bulk materials accumulate on the valve plate, and the accumulated sintered ore bulk materials affect the ventilation volume. This requires timely cleaning of the accumulated sintered ore bulk materials. When cleaning the accumulated sintered ore bulk materials, the valve plate needs to be opened, and the accumulated sintered ore bulk materials need to be shoveled from the valve plate so that the shoveled sintered ore bulk materials fall off from the valve plate. However, due to the accumulation of sintered ore bulk materials on the valve plate, the weight of the valve plate becomes larger, which increases the load of the driving device for realizing the rotation of the valve plate, affects the opening efficiency of the valve plate rotation, and further affects the cleaning efficiency of the accumulated sintered ore bulk materials. Summary of the Utility Model

[0003] The problem solved by the utility model is: how to improve the rotation efficiency of the air box butterfly valve.

[0004] To solve the above problems, on the one hand, the utility model provides an eccentric type air box butterfly valve device, which includes a valve body, a valve plate, a rotating shaft and a driving member. The valve body is used for being installed on the air box. The valve plate is located in the valve body and is connected to the rotating shaft. The rotating shaft is rotatably arranged in the valve body. The valve plate is asymmetric about the axis of the rotating shaft. The driving member is used for driving the rotating shaft to rotate.

[0005] Optionally, the valve body includes two parallel first side walls. Bearing seats are respectively assembled on the outer parts of the two first side walls. A spherical roller bearing is arranged on the bearing seat. The two ends of the rotating shaft in the axial direction respectively extend out from the two first side walls to be respectively connected to the spherical roller bearings on the two bearing seats.

[0006] Optionally, a sealing structure is arranged at the rotating connection part of the rotating shaft and the first side wall.

[0007] Optionally, the rotating shaft is welded to the valve plate.

[0008] Optionally, the end face of the valve plate facing the air flow direction is the first end face, and the rotating shaft is welded to the first end face.

[0009] Optionally, the eccentric bellows butterfly valve device further includes a rib plate, which is perpendicular to the valve plate and the rotating shaft, and is fixedly connected to the valve plate and the rotating shaft respectively.

[0010] Optionally, the eccentric bellows butterfly valve device further includes a connecting rod. One end of the connecting rod is connected to the rotating shaft, and the other end extends away from the rotating shaft along the radial direction of the rotating shaft. The driving member is drivingly connected to the end of the connecting rod away from the rotating shaft. The driving member is used to drive the end of the connecting rod away from the rotating shaft to rotate around the axis of the rotating shaft, so as to drive the rotating shaft to rotate.

[0011] Optionally, an oil filling nozzle for supplementing lubricating oil is provided on the bearing seat.

[0012] Compared with the prior art, in the eccentric bellows butterfly valve device of the present utility model, the valve body is used for installation in the bellows, the valve plate is located in the valve body and is connected to the rotating shaft, the rotating shaft is rotatably arranged in the valve body, so that the valve plate is rotatably assembled in the valve body, and the valve plate is asymmetric with respect to the axis of the rotating shaft, so that the valve plate and the rotating shaft form an eccentric valve core, so that the valve plate has a tendency to rotate automatically in the valve body. Then, the driving member drives the rotating shaft to rotate, and the rotation of the valve plate is realized by the combined action of the self-weight deflection of the valve plate and the driving member. In this way, when cleaning the sintered ore bulk material accumulated on the valve plate, the requirement for the output power of the driving member can be reduced, so that the valve plate can be easily opened, thereby improving the efficiency of cleaning the sintered ore bulk material accumulated on the valve plate.

[0013] On the other hand, the present utility model also provides a sintering machine bellows, including the eccentric bellows butterfly valve device as described above.

[0014] This sintering machine bellows has all the beneficial effects of this eccentric bellows butterfly valve device, which will not be elaborated here.

[0015] On still another aspect, the present utility model also provides a sintering machine, including the eccentric bellows butterfly valve device as described above or including the sintering machine bellows as described above.

[0016] This sintering machine has all the beneficial effects of this eccentric bellows butterfly valve device or this sintering machine bellows, which will not be elaborated here. Description of the Drawings

[0017] Figure 1 It is the front view of the eccentric bellows butterfly valve device in the embodiment of the present utility model;

[0018] Figure 2 It is the side view of the eccentric bellows butterfly valve device in the embodiment of the present utility model.

[0019] Description of the Reference Numerals:

[0020] 1 - Valve body; 11 - First side wall; 2 - Valve plate; 3 - Rotating shaft; 4 - Bearing seat; 5 - Rib plate; 6 - Connecting rod. Detailed implementation manner

[0021] To make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following detailed description will be given to the specific embodiments of the present utility model with reference to the accompanying drawings.

[0022] In the attached drawings, the Z - axis represents the vertical position, and the positive direction of the Z - axis (i.e., the direction of the arrow of the Z - axis) represents the upper side, and the negative direction of the Z - axis (i.e., the direction opposite to the positive direction of the Z - axis) represents the lower side; the X - axis in the attached drawings represents the horizontal position, and the positive direction of the X - axis (i.e., the direction of the arrow of the X - axis) represents the right side, and the negative direction of the X - axis (i.e., the direction opposite to the positive direction of the X - axis) represents the left side; the Y - axis in the attached drawings represents the front - rear position, and the positive direction of the Y - axis (i.e., the direction of the arrow of the Y - axis) represents the front side, and the negative direction of the Y - axis (i.e., the direction opposite to the positive direction of the Y - axis) represents the rear side. At the same time, it should be noted that the above - mentioned meanings represented by the Z - axis, Y - axis and X - axis are only for the convenience of describing the present utility model 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, so it cannot be understood as a limitation to the present utility model.

[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above - mentioned attached drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here.

[0024] Combined with Figure 1 and Figure 2 As shown, the present utility model provides an eccentric air box butterfly valve device, including a valve body 1, a valve plate 2, a rotating shaft 3 and a driving member. The valve body 1 is used for installation on the air box. The valve plate 2 is located inside the valve body 1 and is connected to the rotating shaft 3. The rotating shaft 3 is rotatably arranged inside the valve body 1. The valve plate 2 is asymmetric about the axis of the rotating shaft 3. The driving member is used to drive the rotating shaft 3 to rotate.

[0025] It can be understood that by rotating around the axis of the rotating shaft 3, the valve plate 2 can open or close the flow passage of the valve body 1, thereby realizing the opening and closing operations of the butterfly valve device; during the sintering process, the combustion-supporting gas in the air box generally flows upward to the sintering bed. When the valve plate 2 is horizontal, the valve plate 2 can completely close the valve body 1 to block the flow of the combustion-supporting gas in the air box; in addition, the sintered ore bulk material is likely to fall from the upper sintering bed and accumulate on the upper surface of the valve plate 2. With the long-term accumulation of the sintered ore bulk material, the sintered ore bulk material will reduce the area of the flow passage between the valve plate 2 and the valve body 1, thereby affecting the flow rate of the combustion-supporting gas. Therefore, when cleaning the sintered ore bulk material, the valve plate 2 needs to be further opened, and the sintered ore bulk material is shoveled from the upper surface of the valve plate 2 manually so that the shoveled sintered ore bulk material falls off the valve plate 2.

[0026] Specifically, the driving member can be understood as common driving structures such as a conventional electric cylinder, a motor, etc. The driving member is arranged outside the valve body 1. The valve plate 2 is connected to the rotating shaft 3, and the rotating shaft 3 is rotatably arranged in the valve body 1. The valve plate 2 is rotatably installed in the valve body 1 through the rotating shaft 3, and the valve plate 2 is asymmetric about the axis of the rotating shaft 3. As Figure 1 shown, the lengths of the valve plate 2 on the left and right sides of the axis of the rotating shaft 3 are not equal, that is, the valve plate is eccentrically arranged relative to the rotating shaft 3. In this way, the sintered ore bulk material falling on the valve plate will form a natural eccentric load force (an eccentric load moment on the rotating shaft) under the action of gravity, making the moments on both sides of the axis of the rotating shaft 3 of the valve plate 2 unequal. Furthermore, the valve plate 2 has a tendency to rotate around the rotating shaft 3, and thus it is easier to be opened. When cleaning the sintered ore bulk material accumulated on the valve plate 2, the valve plate 2 can be opened under the dual action of its own eccentric load force and the driving of the driving member, thereby reducing the power output by the driving member.

[0027] Therefore, in this embodiment, the valve body 1 is used to be installed in the air box, the valve plate 2 is located in the valve body 1 and connected to the rotating shaft 3, and the rotating shaft 3 is rotatably arranged in the valve body 1, so that the valve plate 2 is rotationally assembled in the valve body 1. By using the asymmetry of the valve plate 2 about the axis of the rotating shaft 3, an eccentric valve core is formed between the valve plate 2 and the rotating shaft 3, so that the valve plate 2 has a tendency to rotate by itself in the valve body 1. Then, the driving member drives the rotating shaft 3 to rotate, and the rotation of the valve plate 2 is realized under the dual action of the self-weight deflection of the valve plate 2 and the driving member. In this way, when cleaning the sintered ore bulk material accumulated on the valve plate 2, the demand for the power output by the driving member can be reduced, so that the valve plate 2 can be opened more easily, thereby improving the efficiency of cleaning the sintered ore bulk material accumulated on the valve plate 2.

[0028] Optionally, in combination with Figure 1 and Figure 2As shown, the valve body 1 includes two first side walls 11 that are parallel to each other. Bearing seats 4 are respectively assembled on the outer parts of the two first side walls 11. A spherical roller bearing is provided on the bearing seat 4. The two axial ends of the rotating shaft 3 respectively extend from the two first side walls 11 to be respectively connected to the spherical roller bearings on the two bearing seats 4.

[0029] Specifically, the two side walls of the valve body 1 in the X-axis direction are the two first side walls 11. The left and right ends of the rotating shaft 3 are respectively rotatably connected to the two first side walls 11. Bearing seats 4 are respectively assembled on the end faces of the two first side walls 11 located outside the valve body 1. A spherical roller bearing is assembled on the bearing seat 4. The left and right ends of the rotating shaft 3 are respectively in interference fit with the two spherical roller bearings.

[0030] In this way, by respectively assembling bearing seats 4 on the outer parts of the two first side walls 11, providing spherical roller bearings on the bearing seats 4, and respectively extending the two axial ends of the rotating shaft 3 from the two first side walls 11 to be respectively connected to the spherical roller bearings on the two bearing seats 4, the rotating shaft 3 can be respectively connected to the spherical roller bearings on the two bearing seats 4 outside the valve body 1, realizing that the bearing seats 4 are externally arranged on the valve body 1, so that the bearing seats 4 do not directly contact the valve body 1, reducing the influence of the sintering temperature on the structure of the bearing seats 4, and then ensuring the coaxiality of the rotating shaft 3 through the spherical roller bearings on the bearing seats 4 to ensure the rotational stability of the rotating shaft 3.

[0031] Optionally, a sealing structure is provided at the rotational connection between the rotating shaft 3 and the first side wall 11.

[0032] Specifically, the sealing structure is a detachable sealing structure. For example, a through hole is provided on the first side wall 11, a sealing seat is assembled in the through hole, a sealing groove is provided on the sealing seat, the rotating shaft 3 extends into the sealing groove, and a soft seal is installed in the sealing groove. The tight fit between the soft seal and the rotating shaft 3 is relied on to ensure the sealing performance at the rotational connection between the rotating shaft 3 and the first side wall 11.

[0033] In this way, by providing a sealing structure at the rotational connection between the rotating shaft 3 and the first side wall 11, the sealing performance at the rotational connection between the rotating shaft 3 and the first side wall 11 can be improved through the sealing structure, thereby ensuring the sealing performance of the valve body 1 and improving the use reliability of the eccentric air box butterfly valve device.

[0034] Optionally, the rotating shaft 3 is welded to the valve plate 2.

[0035] Specifically, the rotating shaft 3 can be welded to the valve plate 2 by manual welding. In this way, by welding the rotating shaft 3 to the valve plate 2, the rotating shaft 3 and the valve plate 2 form an integral structure, ensuring that the rotating shaft 3 and the valve plate 2 can rotate synchronously to improve the rotational efficiency of the valve plate 2.

[0036] Optionally, in combination with Figure 1 and Figure 2As shown, the end face of the valve plate 2 facing the air flow direction is the first end face, and the rotating shaft 3 is welded to the first end face.

[0037] Specifically, in combination with the foregoing, the air flow generally flows from bottom to top. The lower end face of the valve plate 2 is the end face facing the air flow direction, that is, the first end face.

[0038] In this way, by using the end face of the valve plate 2 facing the air flow direction as the first end face and welding the rotating shaft 3 to the first end face, the valve plate 2 can cover the rotating shaft 3, so that the scattered materials generated during sintering will not adhere to the rotating shaft 3, thereby protecting the structure of the rotating shaft 3.

[0039] Optionally, in combination with Figure 1 and Figure 2 As shown, the eccentric air box butterfly valve device further includes a rib plate 5. The rib plate 5 is perpendicular to the valve plate 2 and the rotating shaft 3 and is fixedly connected to the valve plate 2 and the rotating shaft 3 respectively.

[0040] Specifically, the plate surface of the rib plate 5 is perpendicular to the valve plate 2 and the rotating shaft 3. The rib plate 5 at least includes a straight edge and a curved edge. The rib plate 5 is welded to the valve plate 2 through the straight edge, and the rib plate 5 is welded to the rotating shaft 3 through the curved edge. The rib plate 5 fills the gap between the valve plate 2 and the rotating shaft 3. In this way, by using the rib plate 5 perpendicular to the valve plate 2 and the rotating shaft 3 and fixedly connected to the valve plate 2 and the rotating shaft 3 respectively, after the valve plate 2 and the rotating shaft 3 are connected, the setting of the rib plate 5 can prevent the valve plate 2 from deforming towards the rotating shaft 3, so as to improve the structural strength of the valve plate 2, thereby improving the use stability of the valve plate 2.

[0041] Optionally, in combination with Figure 1 and Figure 2 As shown, the eccentric air box butterfly valve device further includes a connecting rod 6. One end of the connecting rod 6 is connected to the rotating shaft 3, and the other end extends radially away from the rotating shaft 3 along the rotating shaft 3. The driving member is drivingly connected to the end of the connecting rod 6 away from the rotating shaft 3. The driving member is used to drive the end of the connecting rod 6 away from the rotating shaft 3 to rotate around the axis of the rotating shaft 3, so as to drive the rotating shaft 3 to rotate.

[0042] Specifically, the connecting rod 6 is located at the right end of the rotating shaft 3. The upper end of the connecting rod 6 is key-connected to the right end of the rotating shaft 3. The lower end of the connecting rod 6 extends radially away from the rotating shaft 3 along the rotating shaft 3. Taking the electric cylinder as an example for the driving member, the output end of the electric cylinder is drivingly connected to the end of the connecting rod 6 away from the rotating shaft 3 through a pin shaft. When the output end of the electric cylinder extends, the electric cylinder can drive the end of the connecting rod 6 away from the rotating shaft 3 to rotate around the axis of the rotating shaft 3, so that the end of the connecting rod 6 connected to the rotating shaft 3 can rotate synchronously with the rotating shaft 3, thereby realizing the rotation of the rotating shaft 3.

[0043] In this way, the driving member is drivingly connected to one end of the connecting rod 6 far from the rotating shaft 3 and is used to drive the end of the connecting rod 6 far from the rotating shaft 3 to rotate around the axis of the rotating shaft 3 so as to drive the rotating shaft 3 to rotate. One end of the connecting rod 6 is connected to the rotating shaft 3, and the other end extends radially away from the rotating shaft 3. In this way, when the driving member works, the connecting rod 6 increases the lever arm of the rotating shaft 3. When the rotating shaft 3 rotates, the driving member only needs to output a relatively small driving force to realize the rotation of the valve plate 2 inside the valve body 1, thus making it relatively easy to realize the rotation of the valve plate 2.

[0044] Optionally, an oil filling nozzle for supplementing lubricating oil is provided on the bearing seat 4.

[0045] Specifically, since the bearing seat 4 is arranged outside the first side wall 11, when lubricating oil needs to be supplemented, the lubricating oil can be directly supplemented from the outside of the first side wall 11. In this way, by providing an oil filling nozzle for supplementing lubricating oil on the bearing seat 4, it is convenient to supplement the lubricating oil for the spherical roller bearing from the outside of the first side wall 11, which is convenient and efficient.

[0046] On the other hand, the present invention also provides a sintering machine air box, including the eccentric air box butterfly valve device as described above.

[0047] This sintering machine air box has all the beneficial effects of this eccentric air box butterfly valve device and will not be elaborated here.

[0048] On still another aspect, the present invention also provides a sintering machine, including the eccentric air box butterfly valve device as described above or including the sintering machine air box as described above.

[0049] This sintering machine has all the beneficial effects of this eccentric air box butterfly valve device or this sintering machine air box and will not be elaborated here.

[0050] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. An eccentric bellows butterfly valve device, characterized in that: The invention comprises a valve body (1), a valve plate (2), a rotating shaft (3) and a driving member, wherein the valve body (1) is used to be installed on a bellows, the valve plate (2) is located inside the valve body (1) and is connected to the rotating shaft (3), the rotating shaft (3) is rotatably arranged inside the valve body (1), the valve plate (2) is asymmetrical about the axis of the rotating shaft (3), and the driving member is used to drive the rotating shaft (3) to rotate.

2. The eccentric bellows butterfly valve device according to claim 1, characterized in that: The valve body (1) comprises two parallel first side walls (11), the outsides of the two first side walls (11) are respectively equipped with bearing seats (4), the bearing seats (4) are provided with spherical roller bearings, and the two axial ends of the rotating shaft (3) respectively extend from the two first side walls (11) to be respectively connected to the spherical roller bearings on the two bearing seats (4).

3. The eccentric bellows butterfly valve device according to claim 2, characterized in that: A sealing structure is provided at the rotation connection between the rotating shaft (3) and the first side wall (11).

4. The eccentric bellows butterfly valve device according to claim 1, characterized in that: The rotating shaft (3) is welded to the valve plate (2).

5. The eccentric bellows butterfly valve device according to claim 4, characterized in that: The end face of the valve plate (2) facing the flow direction of the airflow is a first end face, and the rotating shaft (3) is welded to the first end face.

6. The eccentric bellows butterfly valve device according to claim 5, characterized in that: It also comprises a rib plate (5), wherein the rib plate (5) is perpendicular to the valve plate (2) and the rotating shaft (3), and is fixedly connected to the valve plate (2) and the rotating shaft (3) respectively.

7. The eccentric bellows butterfly valve device according to claim 1, characterized in that: It also includes a connecting rod (6), one end of which is connected to the rotating shaft (3), and the other end of which extends away from the rotating shaft (3) along the radial direction of the rotating shaft (3); a driving member is drivingly connected to the end of the connecting rod (6) away from the rotating shaft (3), and the driving member is used to drive the end of the connecting rod (6) away from the rotating shaft (3) to rotate around the axis of the rotating shaft (3) to drive the rotating shaft (3) to rotate.

8. The eccentric bellows butterfly valve device according to claim 2, characterized in that: The bearing seat (4) is provided with a refueling nozzle for replenishing lubricating oil.

9. A sintering machine bellows, characterized in that: It comprises an eccentric bellows butterfly valve device as described in any one of claims 1-8.

10. A sintering machine, characterized in that: It comprises the eccentric bellows butterfly valve device as described in any one of claims 1 to 8 or the sintering machine bellows as described in claim 9.

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