Emergency clamp for air leakage of gate valve rod of hot blast stove

Abstract

The utility model provides an emergency clamp for air leakage of a gate valve rod of a hot-blast stove, which relates to the technical field of metallurgical ironmaking and manufacturing and is matched with the hot-blast stove for use, the hot-blast stove comprises a stove body, a gate valve body of the hot-blast stove, a valve sealing cover, a valve fixing bolt, a valve rod, a gland, a cylinder, a certain number of fasteners and a sealing filler packing, the gland is arranged outside the valve rod in a sleeving mode and spaced from the outer wall of the valve rod by a certain distance, the bottom of the gland is fixedly connected with the valve sealing cover, the gland is of a symmetrical split structure and arranged on the top of the cylinder in a sleeving mode, a cavity structure is formed by the gland and the cylinder, and the sealing packing is arranged in the cavity structure formed between the gland and the cylinder. The emergency clamp for air leakage of the gate valve rod of the hot-blast stove is added, is suitable for being used by gate valves of all hot-blast stoves matched with furnace capacities, and can be additionally arranged on the upper part of an original sealing cover, so that the problem that air leakage can be quickly handled when the air leakage condition occurs is solved, and adverse effects on production caused by accident expansion are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical ironmaking manufacturing, and particularly relates to an emergency clamp for air leakage of a hot blast stove gate valve stem. Background Technique

[0002] At present, most of the valves of blast furnace hot blast stoves are gate valves. During the production process of blast furnaces, in order to pursue reasonable air temperature, hot blast stoves are frequently replaced for air supply. The gate valves are frequently opened and closed, and the sealing of the gate valve stem is generally made of graphite packing as the seal. The valve stem often moves, resulting in reduced sealing performance after the packing wears. When leakage occurs, it is easy to blow out the valve stem or the seal box, damage the equipment, cause potential safety hazards and accidents, and affect the production stability at the same time. In serious cases, it can lead to the accident of forced shutdown of the blast furnace.

[0003] In order to solve the above problems, it is urgent to develop an emergency clamp for air leakage of a hot blast stove gate valve stem to solve the above problems. Content of the Utility Model

[0004] The utility model is realized through the following technical solutions: an emergency clamp for air leakage of a hot blast stove gate valve stem, which is used in cooperation with a hot blast stove. The hot blast stove includes: a furnace body, a hot blast stove gate valve body, a valve seal cover, valve fixing bolts and a valve stem. The emergency clamp includes: a gland, a cylinder body, a certain number of fasteners and a sealing packing gland. The cylinder body is a symmetric split structure, sleeved outside the valve stem, and there is a certain distance between the cylinder body and the outer wall of the valve stem. Its bottom is fixedly connected with the valve seal cover. The gland is a symmetric split structure, sleeved on the top of the cylinder body, and forms a cavity structure with the cylinder body. The sealing packing gland is arranged in the cavity structure formed between the gland and the cylinder body.

[0005] Preferably, the cross-section of the cylinder body is an "I" - shaped structure, and wing plates are further arranged on both sides of the cylinder body for mutual fixation of the symmetric split structure of the cylinder body.

[0006] Preferably, a fixed support is further arranged at the bottom of the side wall of the cylinder body for fixing with the valve seal cover through the valve fixing bolts.

[0007] Preferably, the cross-section of the gland is an inverted "convex" - shaped structure, and the protruding part of the gland is exactly inserted into the cylinder body, and the outer edge of the protruding part of the gland is exactly in close contact with the inner wall of the cylinder body.

[0008] Preferably, the gland and the cylinder body are relatively fixed through fasteners.

[0009] Preferably, the symmetric split structure of the cylinder body is relatively fixed through fasteners.

[0010] Preferably, the symmetric split structure of the gland is relatively fixed through fasteners.

[0011] The utility model has the following beneficial effects compared with the existing technology:

[0012] This utility model adds an emergency clamp for air leakage on the gate valve stem of the hot air furnace to overcome the problem of quickly handling air leakage and avoiding the accident from escalating and causing adverse effects on production.

[0013] This device is suitable for use with gate valves of hot blast stoves that are matched with all furnace caps. If the gate valve seal is damaged and leaks, regardless of the size of the blast furnace or the air volume, an emergency clamp for leaking valve stems can be added to the top of the original sealing cover to eliminate the leak accident.

[0014] After all the components of this utility model are connected, it is used to treat air leakage in the gate valve stem of a hot blast furnace. It is connected and installed with the original valve sealing box cover bolts, and can be installed during the production process to eliminate air leakage accidents. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 3 for Figure 2 Top view;

[0019] Figure 4 This is a cross-sectional view of the pressure cap of this utility model;

[0020] Figure 5 This is a cross-sectional view of the cylindrical body of this utility model;

[0021] In the picture:

[0022] 1-Gland, 2-Cylinder, 3-Fixed support, 4-Fastener, 5-Sealing packing, 6-Valve sealing cover, 7-Valve fixing bolt, 8-Valve stem, 9-Hot blast furnace gate valve body, 10-Wing plate. Detailed Implementation

[0023] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. The technical solutions of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0024] Please see Figure 1-5 This utility model provides a technical solution: an emergency clamp for air leakage of a hot blast furnace gate valve stem, which is connected to the valve fixing bolt 7 on the valve sealing cover 6. The pressure cover 1 and the cylinder 2 are both cylindrical and separate. The diameters of the pressure cover 1 and the cylinder 2 are different, and their centers are on the same straight line during processing. The inner diameter of the protruding part of the pressure cover 1 is smaller than the inner diameter of the cylinder 2. The cylinder 2 is connected and fastened to the valve fixing bolt 7. The fixing support 3 ensures the minimum gap with the valve sealing cover 6. The cylinder 2 is filled with sealing packing 5. The pressure cover 1 is used to press and ensure tightness to prevent air leakage.

[0025] Connect the valve stem air leakage clamp cylinder 2 to the upper fixing bolt of the valve sealing cover 6, add sealing packing 5 inside, and tighten the bolt with the pressure cap 1.

[0026] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. For those skilled in the art to which the present invention pertains, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered as falling within the scope of patent protection determined by the submitted claims.

Claims

1. A hot blast stove damper valve stem air leakage emergency clamp for use in conjunction with a hot blast stove, the hot blast stove comprising: The furnace body, hot blast stove valve body, valve sealing cover, valve fixing bolts and valve stem, characterized by comprising: a gland, a cylinder body, a certain number of fasteners and a sealing packing gland. The cylinder body is a symmetric split structure, sleeved outside the valve stem and having a certain distance from the outer wall of the valve stem. Its bottom is fixedly connected to the valve sealing cover. The gland is a symmetric split structure, sleeved on the top of the cylinder body and forming a cavity structure therewith. The sealing packing gland is arranged in the cavity structure formed between the gland and the cylinder body.

2. The emergency clamp for the hot blast stove damper valve stem air leakage according to claim 1, characterized in that, The cross-section of the cylinder body is an "I" - shaped structure, and wing plates are further arranged on both sides thereof for the mutual fixation of the symmetric split structure of the cylinder body.

3. The emergency clamp for the hot blast stove damper stem air leakage according to claim 2, characterized in that, A fixed support is further arranged at the bottom of the side wall of the cylinder body for fixing with the valve sealing cover through the valve fixing bolts.

4. The emergency clamp for the hot blast stove damper valve stem air leakage according to claim 1, characterized in that, The cross-section of the gland is an inverted "convex" - shaped structure, and the protruding part thereof is exactly inserted into the cylinder body, and the outer edge of the protruding part is exactly in close contact with the inner wall of the cylinder body.

5. The emergency clamp for hot blast stove damper stem air leakage according to claim 4, characterized in that, The gland and the cylinder body are relatively fixed through fasteners.

6. The emergency clamp for hot blast stove damper stem air leakage according to claim 2, characterized in that, The symmetric split structure of the cylinder body is relatively fixed through fasteners.

7. The emergency clamp for the hot blast stove damper stem air leakage according to claim 1, characterized in that, The symmetric split structure of the gland is relatively fixed through fasteners.

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