Novel upper sealing valve disc device of blast furnace

Abstract

The utility model discloses a novel upper sealing valve disc device of a blast furnace, which relates to the technical field of sealing valve discs, and comprises a valve disc body, a rubber ring and a pressing piece, the working surface of the valve disc body is provided with an annular groove, and the cross section area of the annular groove is a parallelogram; the rubber ring is used for being placed in the annular groove, and the shape of the rubber ring is matched with that of the annular groove; the pressing piece is detachably and fixedly connected with the valve disc body and can press the top face of the side, close to the center of the valve disc body, of the rubber ring into the annular groove, the structure is simple, use is convenient, and the replacement efficiency of the sealing rubber ring is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing valve disc technology field, in particular to a new type of blast furnace upper sealing valve disc device. BACKGROUND

[0002] At present, the blast furnace upper sealing valve disc device is composed of a cast annular dovetail groove and a rubber ring with a dovetail cross section. Due to the need for fixation and sealing strength, the dovetail rubber ring has a certain hardness and a larger cross-sectional size, resulting in great difficulty and time-consuming and labor-consuming in disassembling the rubber ring. There are harmful gases in the blast furnace ladle, limited space, and high-risk hidden dangers of high-altitude operation in some time periods. When the maintenance personnel replace the sealing rubber ring in the ladle, the operation time and difficulty determine the length of the blast furnace blowdown and affect the safety factor of the maintenance personnel. Therefore, there is an urgent need for a new type of sealing valve disc device. SUMMARY

[0003] The utility model aims at providing a new type of blast furnace upper sealing valve disc device to solve the problems existing in the prior art, which is simple in structure, convenient to use and can effectively improve the replacement efficiency of the sealing rubber ring.

[0004] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0005] The utility model provides a new type of blast furnace upper sealing valve disc device, which comprises a valve disc body, a rubber ring and a pressing member, the working surface of the valve disc body is provided with an annular groove, and the cross-sectional area of the annular groove is a parallelogram; the rubber ring is used to be placed in the annular groove, and the shape of the rubber ring is matched with the annular groove; the pressing member is detachably fixedly connected with the valve disc body and can press the top surface of the rubber ring close to the center side of the valve disc body in the annular groove.

[0006] Preferably, the bottom surface of the annular groove is arranged in a direction away from the center of the valve disc body relative to the top opening of the annular groove.

[0007] Preferably, the pressing member is a pressing plate, and the pressing plate is detachably fixedly connected with the valve disc body.

[0008] Preferably, the pressing plate is an annular pressing plate, and the outer diameter of the annular pressing plate is greater than the inner diameter of the top surface of the rubber ring and less than the outer diameter of the top surface of the rubber ring.

[0009] Preferably, a plurality of screws are further included, the valve disc body is provided with a plurality of screw holes, the annular pressing plate is provided with a plurality of through holes, one through hole is correspondingly arranged with one screw hole, and the screw is used to be threadedly connected with the through hole and the screw hole.

[0010] Preferably, the through holes are uniformly arranged in the circumferential direction of the annular pressing plate.

[0011] Preferably, the number of screws is eight, and the number of through holes is eight.

[0012] The utility model discloses relative to prior art has obtained following technical effect:

[0013] The utility model discloses a novel sealing valve disc device on blast furnace, through with annular recess cross section setting as parallelogram, and make the rubber ring shape and match, changed traditional rubber ring's fixed and installation mode, compared with the original dovetail shape structure, this design reduced the installation and disassembly difficulty of rubber ring, need not like the complex operation of pry, smash etc. of using screwdriver or special tool as before, improved the efficiency of replacing rubber ring when overhauling, also guaranteed the sealing performance between rubber ring and valve disc. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to be used in the embodiment simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0015] Figure 1 It is the front view of the novel sealing valve disc device on blast furnace provided by the utility model,

[0016] Figure 2 It is Figure 1 The sectional view of A-A in Fig.

[0017] In the figure: 1, valve disc body;11, annular recess;12, screw hole;2, rubber ring;3, pressing plate;31, through hole;4, screw. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor belong to the scope of protection of the utility model.

[0019] The utility model discloses a novel sealing valve disc device on blast furnace to solve the problems in the prior art, simple structure, convenient to use, effectively improve the replacement efficiency of sealing rubber ring.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] This utility model provides a novel valve disc device for a sealing valve on a blast furnace, such as... Figures 1-2 As shown, the device includes: a valve disc body, a rubber ring 2, and a clamping component. The working surface of the valve disc body 1 is provided with an annular groove 11, the cross-sectional area of ​​which is a parallelogram. The rubber ring 2 is placed in the annular groove 11, and the shape of the rubber ring 2 matches the annular groove 11. The clamping component is detachably fixed to the valve disc body 1 and can press the top surface of the rubber ring 2 near the center of the valve disc body 1 into the annular groove 11. By setting the cross-sectional area of ​​the annular groove 11 to a parallelogram and matching the shape of the rubber ring 2 to it, the traditional fixing and installation method of the rubber ring 2 is changed. Compared with the original dovetail structure, this design reduces the difficulty of installing and removing the rubber ring 2, eliminating the need for complex operations such as prying and hammering with screwdrivers or special tools as before, improving the efficiency of replacing the rubber ring 2 during maintenance, and also ensuring the sealing performance between the rubber ring 2 and the valve disc. The clamping component presses the rubber ring 2 close to the center of the valve disc body 1 into the annular groove 11, which enhances the stability of the rubber ring 2 and ensures that the rubber ring 2 will not loosen during the operation of the blast furnace, thereby improving the sealing effect.

[0022] In a preferred embodiment, the bottom surface of the annular groove 11 is positioned away from the center of the valve disc body 1 relative to the top opening of the annular groove 11, further enhancing the stability of the rubber ring 2 within the annular groove 11. During blast furnace operation, the rubber ring 2 may experience some displacement or wobbling due to factors such as airflow. However, this structural design allows the rubber ring 2 to better resist external forces after installation due to the inclined bottom surface of the groove, preventing the rubber ring 2 from detaching from the groove and ensuring the reliability of the seal and the long-term stable operation of the device.

[0023] In a preferred embodiment, the clamping element is a pressure plate 3, which is detachably and fixedly connected to the valve disc body 1. Using the pressure plate 3 as the clamping element results in a simple and straightforward structure that is easy to manufacture and operate. The detachable connection allows for easy replacement of the rubber ring 2 simply by removing the pressure plate 3, eliminating the need for complex procedures and significantly reducing maintenance time. Furthermore, this connection method effectively accommodates repeated disassembly and reassembly, ensuring structural stability while facilitating maintenance.

[0024] In a preferred embodiment, the pressing plate 3 is a ring-shaped pressing plate 3, the outer diameter of the ring-shaped pressing plate 3 is greater than the inner diameter of the top surface of the rubber ring 2 and less than the outer diameter of the top surface of the rubber ring 2, the shape of the ring-shaped pressing plate 3 is matched with the structure of the valve disc and the rubber ring 2, and the ring-shaped pressing plate 3 can uniformly apply pressure to the rubber ring 2 to better press the rubber ring 2 in the annular groove 11. The limitation of the outer diameter size ensures that the ring-shaped pressing plate 3 can accurately act on the rubber ring 2, which can effectively press the rubber ring 2 and prevent the rubber ring 2 from loosening to affect the sealing effect, and also prevents problems such as being unable to be normally installed or causing excessive extrusion to the rubber ring 2 due to the size being too large or too small, thereby improving the stability and reliability of the device as a whole.

[0025] In a preferred embodiment, a plurality of screws 4 are further included, the valve disc body 1 is provided with a plurality of screw holes 12, the ring-shaped pressing plate 3 is provided with a plurality of through holes 31, one through hole 31 is correspondingly arranged with one screw hole 12, and the screw 4 is used to be threadedly connected through the through hole 31 and the screw hole 12. The connection mode of the ring-shaped pressing plate 3 and the valve disc body 1 is realized through the cooperation of the screw 4 and the screw hole 12, which has the advantages of firm connection and convenient disassembly. When installing, the ring-shaped pressing plate 3 can be fixed on the valve disc body 1 by tightening the screw 4, and the degree of tightening can be adjusted according to actual needs; when overhauling the rubber ring 2, the ring-shaped pressing plate 3 can be easily disassembled by using a tool to unscrew the screw 4, thereby providing a convenient condition for the quick replacement of the rubber ring 2, while ensuring the stability and sealing performance of the connection between the ring-shaped pressing plate 3 and the valve disc.

[0026] In a preferred embodiment, the through holes 31 are uniformly arranged in the circumferential direction of the ring-shaped pressing plate 3, so that when the screw 4 is used for fixation, the pressure applied by the ring-shaped pressing plate 3 to the rubber ring 2 is more uniform. In this way, the rubber ring 2 is subjected to uniform pressing force in the entire circumferential direction, which can effectively avoid problems such as local deformation or poor sealing of the rubber ring 2 caused by uneven local pressure, thereby ensuring good sealing performance between the rubber ring 2 and the valve disc and the valve seat, and improving the sealing effect and the reliability of the device.

[0027] In a preferred embodiment, the number of screws 4 is eight, and the number of through holes 31 is eight. Setting the number of screws 4 and through holes 31 to eight can provide sufficient fixing force to ensure that the ring-shaped pressing plate 3 is tightly pressed on the rubber ring 2, and also avoids the installation and disassembly process being too cumbersome due to too many screws. Eight evenly distributed connection points can reasonably share the pressure of the rubber ring 2, further enhancing the stability and sealing reliability of the rubber ring 2, and also meeting the requirements for operability and stability of the device in actual production and maintenance processes.

[0028] The principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A novel sealing valve disc device for a blast furnace, characterized in that: include: The valve disc body has an annular groove on its working surface, and the cross-sectional area of ​​the annular groove is a parallelogram. A rubber ring, the rubber ring being placed in the annular groove, and the shape of the rubber ring matching the annular groove; as well as A clamping member is detachably and fixedly connected to the valve disc body and can press the top surface of the rubber ring near the center of the valve disc body into the annular groove.

2. The novel blast furnace upper sealing valve disc device according to claim 1, characterized in that: The bottom surface of the annular groove is positioned away from the center of the valve disc body relative to the top opening of the annular groove.

3. The novel blast furnace upper sealing valve disc device according to claim 2, characterized in that: The clamping component is a pressure plate, which is detachably and fixedly connected to the valve disc body.

4. The novel blast furnace upper sealing valve disc device according to claim 3, characterized in that: The pressure plate is an annular pressure plate, and the outer diameter of the annular pressure plate is larger than the inner diameter of the top surface of the rubber ring and smaller than the outer diameter of the top surface of the rubber ring.

5. The novel blast furnace upper sealing valve disc device according to claim 4, characterized in that: It also includes multiple screws, the valve disc body is provided with multiple screw holes, the annular pressure plate is provided with multiple through holes, one through hole is provided with one screw hole, and the screw is used to pass through the through hole and be threadedly connected to the screw hole.

6. The novel blast furnace upper sealing valve disc device according to claim 5, characterized in that: The through holes are evenly distributed in the circumferential direction of the annular pressure plate.

7. The novel blast furnace upper sealing valve disc device according to claim 6, characterized in that: The number of screws is eight, and the number of through holes is eight.

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