Slag trough cover plate

Abstract

The utility model discloses a slag trough cover plate which comprises a telescopic rod and an arch-shaped cover plate, the telescopic rod is installed on a support in a hinged mode, the hinged position of the telescopic rod and the support is located on one side of a slag trough channel, and the arch-shaped cover plate is arranged on the upper surface of a trough body in a covering mode. The slag channel is located under the arch-shaped cover plate, a hanging lug is arranged on the top of the arch-shaped cover plate, and the hanging lug of the arch-shaped cover plate is movably hung at the free end of the telescopic rod. The slag trough cover plate disclosed by the utility model can be directly arranged on the trough body to cover the slag trough channel, so that the slag trough channel can be sealed and covered, smoke dust in the slag trough channel is prevented from leaking, and the working environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slag channels of iron-making blast furnaces, in particular to a slag channel cover plate. Background Art

[0002] Most modern large blast furnaces adopt the bottom filtration water slag process. During the tapping process, the slag in the molten iron output from the main iron channel enters the granulation tower along the slag channel after passing through the skimmer, and then flows into the water slag pond. As an intermediate channel connecting the main iron channel of the blast furnace and the granulation tower, most of the large front section of the slag channel is on the blast furnace platform, and the small rear section extends out of the blast furnace platform and is connected to the granulation tower. The part extending out of the blast furnace platform and connected to the granulation tower is suspended and is independently formed by a steel trough and a casting material poured in the steel trough. The depth of the slag channel is about 20 cm, which is relatively shallow. When directly covering the traditional block-shaped slag channel cover plate on the slag channel of the steel structure at this part connected to the granulation tower, the relatively shallow depth makes the cover plate affect the flow in the slag channel. Therefore, it is often impossible to directly cover the traditional block-shaped slag channel cover plate on the slag channel of the steel structure at this part connected to the granulation tower. At the same time, there is no support platform on both sides of the slag channel of the steel structure at this part that is higher than the slag channel and can support the block-shaped slag channel cover plate, resulting in the slag channel of the steel structure at this part connected to the granulation tower being in an open-air state for a long time, with a large amount of smoke and dust during slag discharge, causing unorganized emissions. Content of the Utility Model

[0003] The purpose of the utility model is to provide a slag channel cover plate.

[0004] The technical solution to achieve the purpose of the utility model is: a slag channel cover plate, the slag channel includes a channel body and a slag channel formed on the channel body; the slag channel cover plate includes a telescopic rod and an arched cover plate. The telescopic rod is hinged and installed on a bracket. The hinge axis of the telescopic rod and the bracket is parallel to the length direction of the slag channel. The hinge position of the telescopic rod and the bracket is position A, and position A is located on one side of the slag channel. The telescopic rod is perpendicular to the length direction of the slag channel. The arched cover plate covers the upper surface of the channel body. The length direction of the arched cover plate is parallel to the length direction of the slag channel. The slag channel is located directly below the arched cover plate and within the coverage area of the arched cover plate. A hanging ear is provided at the top of the arched cover plate, and the hanging ear of the arched cover plate is movably hung on the free end of the telescopic rod.

[0005] Further, the cross-section of the arched cover plate is arc-shaped. The arched cover plate with an arc-shaped cross-section has high structural strength. At the same time, the arc-shaped structure is common and convenient for obtaining materials.

[0006] Further, a refractory material layer is sprayed on the inner surface of the arched cover plate. The setting of the refractory material layer can effectively improve the fire resistance of the arched cover plate and prevent the arched cover plate from deforming at high temperatures.

[0007] Furthermore, the lug of the arched cover plate is hinged to the free end of the telescopic rod. The lug of the arched cover plate can be hung on the free end of the telescopic rod with a gap, and the lug of the arched cover plate can also be hinged to the free end of the telescopic rod. Compared with the former, when the latter is hinged and installed, it is more flexible in movement and not easily jammed.

[0008] Furthermore, the hinge axis of the lug of the arched cover plate and the free end of the telescopic rod is parallel to the length direction of the slag discharge channel.

[0009] Furthermore, a movable door is provided on the arched cover plate. The provision of the movable door facilitates opening at any time to observe and dredge the flow condition in the slag discharge channel.

[0010] Furthermore, the telescopic rod is an electric hydraulic push rod. The telescopic rod can be a cylinder, a wire cylinder or a hydraulic cylinder. Compared with others, the electric hydraulic push rod has a relatively greater thrust.

[0011] Furthermore, the connection position of the lug and the free end of the telescopic rod is position B, and the horizontal position of position A is higher than the horizontal position of position B. When the horizontal position of position A is higher than the horizontal position of position B, when the arched cover plate is opened, the telescopic rod applies a force obliquely upward, pulling the arched cover plate upward and to one side, so that the arched cover plate is turned over to one side.

[0012] For the slag discharge channel cover plate of the present utility model, the arched structure of the arched cover plate enables it not to affect the flow of slag in the slag discharge channel, and it can be directly placed on the trench body to cover the slag discharge channel. In this way, the arched cover plate covering the slag discharge channel can seal the slag discharge channel to prevent the leakage of dust in the slag discharge channel and improve the working environment. Moreover, the lug of the arched cover plate is movably hung on the free end of the telescopic rod. Under the power action of the telescopic rod, the arched cover plate can be opened or closed, and the use of the arched cover plate is more flexible, greatly facilitating the dredging and maintenance of the slag discharge channel.

[0013] In addition, for the slag ditch cover plate of the present utility model, by hingedly installing the telescopic rod on the bracket, the hingedly installed telescopic rod has no supporting force to lift the arched cover plate, and the arched cover plate always abuts against the ditch body. The state of always abutting against the ditch body provides conditions for the flipping of the arched cover plate. When the arched cover plate has the condition for flipping, with the combined position A located on one side of the slag channel, the telescopic rod is perpendicular to the length direction of the slag channel, and the length direction of the arched cover plate is parallel to the length direction of the slag channel. In this way, through the telescoping of the telescopic rod, the arched cover plate can be pushed and pulled to one side. During this pushing process, the side of the arched cover plate close to the telescopic rod can always abut against the ditch body. Taking the side close to the telescopic rod as the flipping axis, the side of the arched cover plate far from the telescopic rod can be turned upward or closed downward to complete the opening and closing of the arched cover plate. With the structural setting of the telescopic rod, the arched cover plate always abuts against the ditch body without the need to lift the arched cover plate, so the power required by the telescopic rod is relatively small and the energy consumption is low; moreover, the arched cover plate that always abuts against the ditch body and does not need to be lifted has better structural stability and there is no production risk of hurting people when it drops after being lifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional structure view of the slag ditch cover plate of the present utility model;

[0015] Figure 2 is a schematic longitudinal-sectional structure view of the slag ditch cover plate of the present utility model;

[0016] Figure 3 is a schematic cross-sectional structure view of the slag ditch cover plate of the present utility model after the arched cover plate is opened. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following describes in detail the preferred embodiments of the slag ditch cover plate of the present utility model with reference to the accompanying drawings:

[0018] As Figure 1 and Figure 2As shown in the figure, a slag trench cover plate is provided. The slag trench 100 includes a trench body 101 and a slag passage 102 formed on the trench body 101. The slag trench cover plate includes a telescopic rod 1 and an arched cover plate 2. The telescopic rod 1 is hingedly installed on a bracket 10. The hinge axis of the telescopic rod 1 and the bracket 10 is parallel to the length direction of the slag passage 102. The hinge position of the telescopic rod 1 and the bracket 10 is position A, and position A is located on one side of the slag passage 102. The telescopic rod 1 is perpendicular to the length direction of the slag passage 102. The arched cover plate 2 covers the upper surface of the trench body 101. The length direction of the arched cover plate 2 is parallel to the length direction of the slag passage 102. The slag passage 102 is located directly below the arched cover plate 2 and within the coverage area of the arched cover plate 2. A hanging ear 21 is provided at the top of the arched cover plate 2, and the hanging ear 21 of the arched cover plate 2 is movably hung on the free end 11 of the telescopic rod 1.

[0019] For the slag trench cover plate of the present utility model, the slag trench 100 includes a trench body 101 and a slag passage 102 formed on the trench body 101. Among them, the trench body 101 is formed by a steel trough and a casting material poured into the steel trough. When pouring the casting material, a mold is placed inside the steel trough, and the casting material is poured between the steel trough and the mold. After pouring is completed, the mold is removed to form the slag passage 102. The structure of the slag trench 100 is prior art, and the present utility model will not elaborate on it too much. The slag trench 100 is connected to a granulation tower. During the process of tapping iron from a blast furnace, the slag cleared from the molten iron enters the slag passage 102 later and is transported to the granulation tower along the slag passage 102.

[0020] For the slag trench cover plate of the present utility model, the arched cover plate 2 abuts against the upper surface of the trench body 101 and covers the slag passage 102, and the arched cover plate 2 is used as a shielding cover for the slag passage 102. The hanging ear 21 of the arched cover plate 2 is movably hung on the free end 11 of the telescopic rod 1, and the telescopic rod 1 serves as the opening and closing power for the arched cover plate 2. Among them, the hanging ear 21 of the arched cover plate 2 is movably hung on the free end 11 of the telescopic rod 1, and the arched cover plate 2 moves relative to the telescopic rod 1. The telescopic rod 1 is hingedly installed on the bracket 10, and the telescopic rod 1 can swing relative to the bracket 10. The telescopic rod 1 that can swing relative to the bracket 10 has no supporting force to lift the arched cover plate 2, and the arched cover plate 2 always abuts against the upper surface of the trench body 101. After the arched cover plate 2 that always abuts against the trench body 101 is stressed on one side, it can only flip. Combining the setting that position A is located on one side of the slag passage 102, the telescopic rod 1 is perpendicular to the length direction of the slag passage 102, and the length direction of the arched cover plate 2 is parallel to the length direction of the slag passage 102, the telescopic rod 1 can push and pull the arched cover plate 2 to one side to turn the arched cover plate 2 to one side or reset and close it by telescoping.

[0021] The ladle slag ditch cover of the present utility model. When tapping iron, the arched cover 2 covers the slag ditch passage 102 to block the slag ditch passage 102 and prevent the smoke and dust in the slag ditch passage 102 from leaking out during tapping iron, as Figure 1 shown. When not tapping iron, or when it is necessary to dredge and maintain the slag ditch passage 102 and open the arched cover 2, the telescopic rod 1 contracts. During the contraction of the telescopic rod 1, under the pulling force of the telescopic rod 1, the arched cover 2 is stressed to one side. The side of the arched cover 2 close to the telescopic rod 1 abuts against the trough body 101, and the side of the arched cover 2 far from the telescopic rod 1 is lifted and flipped to the side far from the telescopic rod 1 to realize opening the cover, as Figure 3 shown. When the arched cover 2 needs to be reset to cover the slag ditch passage 102, the telescopic rod 1 extends. The side of the arched cover 2 close to the telescopic rod 1 abuts against the trough body 101, and the side of the arched cover 2 far from the telescopic rod 1 is flipped to the side far from the telescopic rod 1 to be reset and closed, covering the slag ditch passage 102, as Figure 1 shown.

[0022] For the ladle slag ditch cover of the present utility model, the arched structure of the arched cover 2 enables it not to affect the flow of slag in the slag ditch passage 102, and it can be directly placed on the trough body 101 to cover the slag ditch passage 102. In this way, the arched cover 2 covering the slag ditch passage 102 can seal the slag ditch passage 102 to prevent the smoke and dust in the slag ditch passage 102 from leaking out and improve the working environment. Moreover, the hanging ear 21 of the arched cover 2 is movably hung on the free end 11 of the telescopic rod 1. Under the driving force of the telescopic rod 1, the arched cover 2 can be opened or closed, and the use of the arched cover 2 is more flexible, which greatly facilitates the dredging and maintenance of the slag ditch passage 102.

[0023] In addition, for the slag trench cover plate of the present utility model, by hingedly installing the telescopic rod 1 on the bracket 10, the hingedly installed telescopic rod 1 has no supporting force to lift the arched cover plate 2, and the arched cover plate 2 always abuts against the trench body 101. The state of always abutting against the trench body 101 provides conditions for the flipping of the arched cover plate 2. When the arched cover plate 2 has the condition for flipping, considering that the combined position A is located on one side of the slag channel 102, the telescopic rod 1 is perpendicular to the length direction of the slag channel 102, and the length direction of the arched cover plate 2 is parallel to the length direction of the slag channel 102. In this way, through the telescoping of the telescopic rod 1, the arched cover plate 2 can be pushed and pulled to one side. During this pushing process, the side of the arched cover plate 2 close to the telescopic rod 1 always abuts against the trench body 101. Taking the side close to the telescopic rod 1 as the flipping axis, the side of the arched cover plate 2 far from the telescopic rod 1 can be turned upward or closed downward to complete the opening and closing of the arched cover plate 2. With such a structural setting of the telescopic rod 1, the arched cover plate 2 always abuts against the trench body 101 without the need to lift the arched cover plate 2. The power required for the telescopic rod 1 is relatively small, and the energy consumption is low. Moreover, the arched cover plate 2 that always abuts against the trench body 101 and does not need to be lifted has better structural stability and does not pose a production risk of hurting people when it descends after being lifted.

[0024] For the slag trench cover plate of the present utility model, preferably, the cross-section of the arched cover plate 2 is arc-shaped. The arched cover plate 2 with an arc-shaped cross-section has high structural strength. At the same time, the arc-shaped structure is common and the material is easy to obtain.

[0025] For the slag trench cover plate of the present utility model, preferably, a refractory material layer 20 is sprayed on the inner surface of the arched cover plate 2. The setting of the refractory material layer 20 can effectively improve the fire resistance of the arched cover plate 2 and prevent the arched cover plate 2 from deforming at high temperatures.

[0026] For the slag trench cover plate of the present utility model, preferably, the lug 21 of the arched cover plate 2 is hinged to the free end 11 of the telescopic rod 1. The lug 21 of the arched cover plate 2 can be hung on the free end 11 of the telescopic rod 1 with a gap, or the lug 21 of the arched cover plate 2 can also be hinged to the free end 11 of the telescopic rod 1. Compared with the former, when the latter is hingedly installed, the movement is more flexible and it is not easy to get stuck.

[0027] For the slag trench cover plate of the present utility model, the hinge axis of the lug 21 of the arched cover plate 2 and the free end 11 of the telescopic rod 1 is parallel to the length direction of the slag channel 102.

[0028] The slag ditch cover plate of the present utility model, preferably, an access door 22 is provided on the arched cover plate 2. The provision of the access door 22 facilitates opening at any time to observe and dredge the flow condition in the slag ditch passage 102.

[0029] The slag ditch cover plate of the present utility model, preferably, the telescopic rod 1 is an electro-hydraulic push rod. The telescopic rod 1 can be an air cylinder, a wire cylinder or a hydraulic cylinder. Compared with others, the electro-hydraulic push rod has relatively greater thrust.

[0030] The slag ditch cover plate of the present utility model, preferably, the connection position between the hanging ear 21 and the free end 11 of the telescopic rod 1 is position B, and the horizontal position of position A is higher than the horizontal position of position B. When the horizontal position of position A is higher than the horizontal position of position B, when the arched cover plate 2 is opened, the telescopic rod 1 applies a force obliquely upward, pulling the arched cover plate 2 upward and to one side, so that the arched cover plate 2 is turned over to one side.

[0031] The slag ditch cover plate of the present utility model, the two ends of the arched cover plate 2 can be sealed as required.

[0032] For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can also be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. A slag trench cover plate, the slag trench comprising a trench body and a slag passage formed on the trench body; characterized in that: It includes a telescopic rod and an arched cover plate. The telescopic rod is hingedly installed on the bracket. The hinge axis of the telescopic rod and the bracket is parallel to the length direction of the slag discharge channel. The hinge position of the telescopic rod and the bracket is position A, and position A is located on one side of the slag discharge channel. The telescopic rod is perpendicular to the length direction of the slag discharge channel. The arched cover plate covers the upper surface of the trough body. The length direction of the arched cover plate is parallel to the length direction of the slag discharge channel. The slag discharge channel is located directly below the arched cover plate and within the coverage area of the arched cover plate. The top of the arched cover plate is provided with hanging ears, and the hanging ears of the arched cover plate are movably hung on the free end of the telescopic rod.

2. The slag ditch cover plate according to claim 1, wherein: The cross-section of the arched cover plate is arc-shaped.

3. The slag trench cover plate according to claim 1, wherein: The inner surface of the arched cover plate is sprayed with a refractory material layer.

4. The slag ditch cover plate according to claim 1, wherein: The hanging ears of the arched cover plate are hinged to the free end of the telescopic rod.

5. The slag trench cover plate according to claim 4, wherein: The hinge axis of the hanging ears of the arched cover plate and the free end of the telescopic rod is parallel to the length direction of the slag discharge channel.

6. The slag ditch cover plate according to claim 1, wherein: An access door is provided on the arched cover plate.

7. The slag ditch cover plate according to claim 1, characterized in that: The telescopic rod is an electro-hydraulic push rod.

8. The slag ditch cover plate according to claim 1, characterized in that: The connection position of the hanging ears and the free end of the telescopic rod is position B, and the horizontal position of position A is higher than the horizontal position of position B.

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