CN201129478Y - Revolving furnace RD valve with seal groove - Google Patents

Abstract

The utility model relates to a RD valve of a converter, provided with a seal slot, belonging to the technical field of steelmaking equipment, in particular to a device at the second venture throat of the smoke purification and recycling system of a converter, for resolving the problems of prior RD valve such as bad seal, smoke leakage, hard check and maintenance and frequent lodging in rotation of the valve body. The RD valve provided with a seal slot comprises a valve shell, an upper and a lower flange disc, a bearing base, a rotation shaft, a rotary arm handle, a smoke inlet pipe and a smoke outlet pipe connected with the RD valve, wherein the end surface of the lower flange of the valve body is processed with a circle V-type slot along the length direction of 10-12mm wide and 8-10mm deep, the slot is embedded and sealed with stuff, the RD valve body and the lower flange are fixed via bolts, two ends of the axle neck of the rotation shaft are extended to 200-250mm outside the valve body and inserted into a bearing on the bearing base, whose ends are connected with the rotary arm of 250-300mm long.

Description

A kind of converter RD valve that has seal groove

Technical field

The utility model belongs to the steelmaking equipment technology, specifically the equipment that is positioned at two civilian aditus laryngis in converter gas purification and the reclaiming system.

Background technique

The technician of industry converter RD fully aware of valve is the key equipment of pneumatic steelmaking, and it is undertaking the adjusting function in converter gas purification and the reclaiming system.The oval-shaped spool of this equipment is fixed on the bearing support at two ends, and valve shell utilizes flange to be connected with upper and lower flue.The open and close of spool drives and adopts oil cylinder to drive rotating shaft, spool rotation by connecting rod, pivoted arm, thereby realizes the switching function of RD valve.Because the defective in the design, the RD valve exists very serious problem always in pneumatic steelmaking is produced, the ordinary production of converter is brought great influence, and subject matter is as follows:

1), because of lower flange on the packing seal position all is the plane, cause poorly sealedly, gas leakage often takes place;

2), bearing support is too little apart from valve body interdigit crack, has only 50mm, the valve body outflow location is not enough when causing handling gas leakage, and is extremely inconvenient, influences the repairing operation at this position.Prolonged the repairing time;

3), because RD valve position environment is abominable, and dust is big, the spool supporting bearing advances ash easily, but this bearing support of former design is all-in-one-piece, is not easy to disassembly, cleaning, causes valve body that jam often takes place;

4), because the residing environment of RD valve body part is very abominable, in servicely bearing the erosion of high temperature, dust, flue gas and washing away of water for a long time, the valve body surface scale formation is very serious.Increased greatly and drive the resisting moment that valve body rotates, therefore, caused in the using process actuator's dynamics not enough, the situation that the valve body on-off action can not effectively be finished often takes place.

Summary of the invention

The purpose of this utility model is that will to solve existing RD valve seal not tight, gas leakage, and maintenance difficult treatment and valve body rotate technical problems such as jam often occur.

Realize that concrete technological scheme of the present utility model is: this converter RD valve that has seal groove, by valve shell, upper and lower method dish, bearing support, rotating shaft, pivoted arm handle and the flue gas inlet/outlet pipeline that is connected the RD valve are formed, the invention designer at first processes a circle V-shaped groove along its length at RD valve body lower flange end face, groove width 10mm-12mm, groove depth 8mm-10mm, when sealing is installed, in the packing seal embedded groove, by bolt that RD valve body and lower flange is fastening to reach the effect that strengthens sealing, solve the gas leakage problem; The invention designer also takes into full account and does not influence production in the equipment running process as far as possible, shorten the repair time, in the design rotating shaft axle journal two ends are extended to 200mm-250mm outside valve body, and penetrate in the bearing on the bearing support, its end is connected with the pivoted arm handle, changes the length of the fulcrum arm of force, increases driving moment, eliminate main valve plug and rotate the not enough problem of dynamics, the long 250mm-300mm of pivoted arm handle.In order to make its loading and unloading that no longer have influence on valve body, change stuffing box packing during for processing gas leakage convenience is provided.The invention designer is the split-type shaft bearing with the structural design of bearing support, and at the loam cake of bearing support, the two ends of bearing position are fastening with screw rod.The more existing converter RD of the utility model valve device has good seal, no gas leakage, and valve body rotates flexibly, and jam seldom takes place.Equipment failure rate declines to a great extent, for pneumatic steelmaking production provides reliable guarantee.And dismounting, easy for installation has improved maintenance or repairing working efficiency greatly.

Description of drawings

Fig. 1 the utility model structural representation

The A of Fig. 2 the utility model Fig. 1 is to structural representation

Fig. 3 the utility model valve body and upper flange cut open and show structural representation

Fig. 4 the utility model disparting type bearing support cuts open and shows structural representation

Among the figure: lower flue 1, lower flange 2, rotating shaft 3, upper flange 4, upper flue 5, seal groove 6, spool 7, bearing support 8, bearing 9, bearing 10, pivoted arm handle 11, connecting rod 12, valve shell 13

Embodiment

Fig. 1 is a converter RD valve schematic representation of the present utility model, the bearings at both ends 220mm that stretches out, and two end axles bearing formula is designed to the split type (see figure 4) simultaneously, and connecting rod 2 extends to 250mm, and offers V-seal groove (see figure 3) on lower flange.

When the RD valve cuts out or opens, adopt oil cylinder to drive rotating shaft, drive the spool rotation, thereby realize the switching function of RD valve by connecting rod, pivoted arm handle.

Claims (3)

1. converter RD valve that has seal groove, by valve shell, upper and lower method dish, bearing support, rotating shaft, pivoted arm handle and the flue gas inlet/outlet pipeline that is connected the RD valve are formed, process a circle V-shaped groove along its length at RD valve body lower flange end face, groove width 10mm-12mm, groove depth 8mm-10mm, in the packing seal embedded groove, RD valve body and lower flange is fastening by bolt.

2. a kind of converter RD valve that has seal groove according to claim 1 is characterized in that: rotating shaft axle journal two ends are extended to 200mm-250mm outside valve body, and penetrate in the bearing on the bearing support, its end is connected with the pivoted arm handle, the long 250mm-300mm of pivoted arm handle.

3. a kind of converter RD valve that has seal groove according to claim 1, it is characterized in that: the structural design of bearing support is the split-type shaft bearing, at the loam cake of bearing support, the two ends of bearing position are fastening with screw rod.

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