CN-121977077-A - Micro-motion adjusting valve of sintering machine

Abstract

The invention discloses a micro-motion adjusting valve of a sintering machine. The valve comprises a valve body, wherein a valve plate is arranged in the valve body, a valve plate shaft is arranged on the valve plate, the free end of the valve plate shaft extends out of the valve body, a driven rocker is arranged at the free end of the valve plate shaft, a driving device comprises a driving shaft, a driving rocker is arranged on the driving shaft, the driving rocker and the driven rocker are arranged in parallel, and the free ends of the driving rocker and the driven rocker are hinged through a connecting rod to form a four-bar mechanism. The invention can more accurately control and adjust the opening and closing degree of the valve through the four-bar linkage and the arrangement of the movable valve plate. The device is reliable in operation, compact in structure and convenient to install and maintain.

Inventors

• CAO JING
• HUANG HE
• TAN PEIGEN
• WANG KAIXIANG
• LIU YICHENG

Assignees

• 中冶华天南京工程技术有限公司
• 中冶华天工程技术有限公司

Dates

Publication Date

20260505

Application Date

20260130

Claims (3)

1. 1. A fine motion adjustment valve for a sintering machine, comprising: The valve body is provided with a valve body, A valve plate is arranged in the valve body, and a valve plate shaft is arranged on the valve plate; the free end of the valve plate shaft extends out of the valve body, and the free end of the valve plate shaft is provided with a driven rocker; The driving device comprises a driving shaft, wherein a driving rocker is arranged on the driving shaft, the driving rocker and a driven rocker are arranged in parallel, and the free ends of the driving rocker and the driven rocker are hinged through a connecting rod to form a four-bar mechanism.
2. 2. The micro-motion adjusting valve of the sintering machine according to claim 1, wherein the inner section of the valve body is circular, the valve plate consists of a semicircular static valve plate and a semicircular movable valve plate, the static valve plate is fixed in the valve body in a sealing manner, and the valve plate shaft is arranged on one side of the straight edge of the semicircular movable valve plate.
3. 3. The fine motion adjustment valve of sintering machine according to claim 1, wherein the driving means comprises a motor and a bevel gear reducer.

Description

Micro-motion adjusting valve of sintering machine Technical Field The invention relates to a micro-motion adjusting valve of a sintering machine, and belongs to the technical field of sintering equipment. Background The sintering machine is used as core equipment in steel production, and the negative pressure control precision of the ignition link directly determines the quality and the energy consumption efficiency of the sintered ore. The traditional sintering machine generally adopts a fixed air door or a straight-through butterfly valve to adjust the negative pressure of an air box, but due to structural design defects, the valve is frequently blocked by dust accumulation, ash removal is required to be forced to be opened periodically, the negative pressure suddenly drops below-8 kPa in the process, combustion stability is destroyed, meanwhile, the air leakage rate between a trolley and the air box is as high as 40% -50%, the effective air utilization rate is greatly reduced, the gas consumption is forced to be increased by more than 15%, and the problems of material surface overload/material shortage, sintering ore clamping and the like are often caused due to the structural response lag of a manually operated sector valve or a hinge door. These defects not only push up the maintenance cost, but also restrict the application of energy-saving technologies such as low-temperature ignition and the like. In order to solve the problems, in recent years, partial improvement schemes are proposed in the industry, for example, a pressure regulating valve is additionally arranged on a bellows pipeline, and the opening degree is regulated by a valve core linear movement driving unit, but the opening degree mode of double-sided opening and closing cannot dynamically respond to the fluctuation demand of micro negative pressure (-1 to-3 kPa). Disclosure of Invention In order to overcome the above-mentioned drawbacks, the present invention is directed to a micro-adjusting valve for sintering machine. In order to achieve the above object, the micro-motion adjusting valve for sintering machine of the present invention comprises: The valve body is provided with a valve body, A valve plate is arranged in the valve body, and a valve plate shaft is arranged on the valve plate; the free end of the valve plate shaft extends out of the valve body, and the free end of the valve plate shaft is provided with a driven rocker; The driving device comprises a driving shaft, wherein a driving rocker is arranged on the driving shaft, the driving rocker and a driven rocker are arranged in parallel, and the free ends of the driving rocker and the driven rocker are hinged through a connecting rod to form a four-bar mechanism. Further, the inner section of the valve body is circular, the valve plate consists of a semicircular static valve plate and a semicircular movable valve plate, the static valve plate is fixed in the valve body in a sealing way, and the valve plate shaft is arranged on one side of the straight edge of the semicircular movable valve plate. Further, the driving device consists of a motor and a bevel gear reducer. According to the invention, the half valve plate is fixed, the half valve plate is opened and closed, and the opening and closing degree of the valve can be controlled and adjusted more accurately by matching with the structure form of bevel gear transmission in the driving part. The device has higher flexibility and convenience, reliable work, compact structure and convenient installation and maintenance. Drawings Fig. 1 is a schematic diagram of a micro-motion adjusting valve of a sintering machine. Fig. 2 is a schematic view of a valve body. Fig. 3 is a schematic view of a dynamic valve plate member. Fig. 4 is a schematic view of a driving part. Fig. 5 is a schematic view of the inching valve in a 0 degree closed state. Fig. 6 is a schematic diagram of a micro valve in a 90 degree closed state. The valve comprises a valve body, 2, a movable valve plate component, 3, a driving component, 1.1, an upper flange, 1.3, a lower flange, 1.4, a fixed semicircular valve plate, 1.5, a valve plate limiting strip, 1.6, a driving component mounting support, 2.1, a driving rocker, 2.2, a connecting rod, 2.3, a driven rocker, 2.4, a driving shaft, 2.5, a semicircular movable valve plate, 2.6, a head hooking key, 2.7, a pin shaft, 2.8, a connecting bolt and nut, 3.1, a motor, 3.2 and a bevel gear reducer. Detailed Description Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present i