Stepless regulating valve structure for controlling furnace pressure

Abstract

The utility model relates to a stepless regulating valve structure for controlling furnace pressure, which comprises a flange pipe connected in series on a smelting furnace smoke exhaust pipeline, flange plates are arranged on the upper end face and the lower end face of the flange pipe, and through holes connected with the smelting furnace smoke exhaust pipeline are distributed on the circumferences of the flange plates. A valve plate which can cover a central hole channel of the flange pipe and can rotate in a stepless mode is arranged in the flange pipe, a rotating rod penetrating out of the flange pipe is connected to the valve plate, and the extending end of the rotating rod is connected with a servo motor to achieve stepless rotation of the rotating rod. The center of the rotating rod is provided with a center penetrating channel used for allowing cold air to pass through, and the center of the valve plate is provided with a cooling cavity communicated with the center penetrating channel. According to the utility model, the rotating rod is driven by the servo motor to rotate in a stepless manner, so that different opening and closing degrees are realized through different rotating angles of the rotating rod and the valve plate, and the production requirements of accurate temperature control are met.

Description

Technical field:

[0002] The utility model relates to a stepless regulating valve structure for controlling furnace pressure. Background technology:

[0004] The exhaust gas pipeline of the smelting furnace is installed on the smelting furnace to discharge high-temperature flue gas. At present, a butterfly valve controlled by a smoke gate or a cylinder is connected in series in the exhaust gas pipeline of the smelting furnace. The butterfly valve controlled by the smoke gate or the cylinder can only be in two states: open or closed, and cannot meet various usage requirements in the production process. That is, when the butterfly valve controlled by the smoke gate or the cylinder is fully opened, the problem in the smelting furnace changes suddenly, and it cannot meet some production requirements of precise temperature control; in addition, due to the high temperature in the exhaust gas pipeline of the smelting furnace, when the butterfly valve controlled by the smoke gate or the cylinder is at high temperature for a long time, it is easy to shorten the service life.

[0005] A Chinese patent "Automatic Adjustment Air Curtain Flue Butterfly Valve for Forging Heating Furnace" was retrieved, publication number CN203719440U, which comprises a valve body (1), a blower (2) and a furnace pressure automatic control system, the furnace pressure automatic control system comprising a pressure detector (5) and a PLC controller (6), the pressure detector (5) being installed in the furnace body of the forging heating furnace, the signal output end of the pressure detector (5) being connected to the signal input end of the PLC controller (6), the signal output end of the PLC controller (6) being connected to the frequency converter of the blower (2), the utility model can release energy quickly when a deflagration occurs in the furnace, and ensure the safety of the furnace body and the surrounding area; the air curtain flue butterfly valve has low cost, quick response and easy installation; but it cannot realize stepless adjustment of the exhaust area of ​​the exhaust gas pipeline of the smelting furnace, and thus cannot meet the production requirements of precise temperature control. Summary of the invention:

[0007] In view of this, the purpose of the utility model is to provide a stepless regulating valve structure for controlling furnace pressure. The stepless regulating valve structure for controlling furnace pressure is reasonably designed and is conducive to achieving stepless regulation of the exhaust area of ​​the exhaust gas pipeline of the smelting furnace.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] The utility model is a stepless regulating valve structure for controlling furnace pressure, characterized in that it comprises a flange pipe connected in series on the exhaust gas pipeline of the smelting furnace, the upper and lower end faces of the flange pipe are provided with flange plates, through holes connected to the exhaust gas pipeline of the smelting furnace are arranged on the circumference of the flange plate, a valve plate capable of covering the central hole of the flange pipe and capable of stepless rotation is provided in the flange pipe, a rotating rod passing through the flange pipe is connected to the valve plate, the extended end of the rotating rod is connected to a servo motor to realize the stepless rotation of the rotating rod; the center of the rotating rod has a central through channel for passing cold air, and the center of the valve plate has a cooling chamber connected to the central through channel.

[0010] Preferably, a plurality of heat sinks are provided on the upper and lower surfaces of the valve plate.

[0011] Preferably, the heat sink has five fins which are parallel to each other, and two reinforcing rib plates which are spaced apart are connected between two adjacent heat sinks.

[0012] Preferably, both ends of the rotating rod pass through the flange tube, wherein a worm is installed on the first end of the rotating rod, and a worm wheel meshing with the worm is installed on the output end of the servo motor.

[0013] Preferably, the first end of the rotating rod is connected to a rotating joint, which serves as an input end of cold air, and the second end of the rotating rod serves as an output end of cold air.

[0014] Preferably, the valve plate is circular in shape, which matches the shape of the central hole of the flange pipe.

[0015] The working principle of the stepless regulating valve structure for controlling furnace pressure of the utility model is that a servo motor drives a rotating rod to rotate steplessly, thereby realizing different opening and closing degrees through different rotation angles of the rotating rod and the valve plate, thereby meeting some production requirements for precise temperature control; in addition, by introducing cold air into the central through channel and the cooling chamber, the rotating rod and the valve plate are cooled, thereby ensuring the service life of the stepless regulating valve. Description of the drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model from top view;

[0018] Figure 2 It is a schematic diagram of the AA section structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the BB cross-section structure of the utility model (rotated 90 degrees);

[0020] Figure 4 The utility model is a connection exploded view of a flange pipe and a fume exhaust pipe of a smelting furnace. Specific implementation method:

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as commonly understood by ordinary technicians in the technical field to which the present application belongs.

[0024] The utility model provides a stepless regulating valve structure for controlling furnace pressure, comprising a flange pipe 2 connected in series to a fume exhaust pipe 1 of a smelting furnace, wherein flange plates 3 are provided on the upper and lower end surfaces of the flange pipe 2, and through holes 4 connected to the fume exhaust pipe of the smelting furnace are arranged on the circumference of the flange plate 3, the flange plate 3 is butt-jointed with the flange plate on the fume exhaust pipe of the smelting furnace, and then bolts are locked in the through holes 4 to realize the series connection between the flange plate 3 and the fume exhaust pipe of the smelting furnace.

[0025] A valve plate 5 is provided in the flange pipe 2, which can cover the central hole 13 of the flange pipe and can rotate infinitely. The shape of the valve plate is circular, which matches the shape of the central hole of the flange pipe. When the valve plate is perpendicular to the central hole of the flange pipe, the opening is the smallest. When the center line of the central hole of the flange pipe is flush with the valve plate, the opening is the largest.

[0026] A rotating rod 6 passing through the flange pipe is connected to the valve plate 5, and the center line of the rotating rod 6 is perpendicular to the center channel of the flange pipe. The protruding end of the rotating rod 6 is connected to the servo motor 7 to realize the stepless rotation of the rotating rod. The delivery end of the servo motor 7 can be directly connected to the protruding end (first end) of the rotating rod 6, or a worm 12 is installed on the first end of the rotating rod, and a worm wheel 14 meshing with the worm is installed on the output end of the servo motor 7. The worm wheel 14 is driven by the servo motor 7, and then the worm 12 and the rotating rod 6 are driven to rotate, and the rotation is stable and reliable.

[0027] In order to cool down the valve plate 5, rotating rod 6 and other components, the center of the rotating rod has a central through channel 8 for passing cold air, and the center of the valve plate has a cooling chamber 9 connected to the central through channel. The cooling chamber 9 in the valve plate is closed, and cold air can only be input or output through the central through channel 8 of the rotating rod. When cold air is introduced at one end of the central through channel 8, the valve plate 5, rotating rod 6 and other components can be cooled.

[0028] Specifically, the first end of the rotating rod is connected to the rotating joint 15, which is a commercially available product. Its function is that the first end of the rotating joint 15 is connected to the rotating rotating rod, and the second end is connected to the fixed cold air supply pipeline. The second end of the rotating joint serves as the input end of the cold air, and the second end of the rotating rod serves as the output end of the cold air. The cold air can be generated by a semiconductor refrigerator or an air-conditioning refrigerator.

[0029] In order to dissipate heat, a plurality of heat sinks 10 are provided on the upper and lower surfaces of the valve plate, and the heat sinks 10 are perpendicular to the upper and lower surfaces of the valve plate; there are five heat sinks, which are parallel to each other, and two spaced reinforcing rib plates 11 are connected between two adjacent heat sinks.

[0030] The working principle of the stepless regulating valve structure for controlling furnace pressure of the utility model is that a servo motor drives a rotating rod to rotate steplessly, thereby realizing different opening and closing degrees through different rotation angles of the rotating rod and the valve plate, thereby meeting some production requirements for precise temperature control; in addition, by introducing cold air into the central through channel and the cooling chamber, the rotating rod and the valve plate are cooled, thereby ensuring the service life of the stepless regulating valve.

[0031] The preferred embodiments listed above further illustrate the purpose, technical solutions and advantages of the utility model in detail. It should be understood that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A stepless regulating valve structure for controlling furnace pressure, characterized in that: It comprises a flange pipe connected in series to the exhaust gas pipeline of a smelting furnace, wherein the upper and lower end faces of the flange pipe are provided with flange plates, and through holes connected to the exhaust gas pipeline of the smelting furnace are arranged on the circumference of the flange plate, and the flange pipe is provided with a valve plate which can cover the central hole of the flange pipe and can rotate infinitely, and a rotating rod passing through the flange pipe is connected to the valve plate, and the protruding end of the rotating rod is connected to a servo motor to realize the infinite rotation of the rotating rod; the center of the rotating rod has a central through channel for passing cold air, and the center of the valve plate has a cooling chamber connected to the central through channel.

2. The stepless regulating valve structure for controlling furnace pressure according to claim 1 is characterized in that: The upper and lower surfaces of the valve plate are provided with a plurality of heat sinks.

3. The stepless regulating valve structure for controlling furnace pressure according to claim 2 is characterized in that: The heat sink has five fins which are parallel to each other, and two reinforcing rib plates which are spaced apart are connected between two adjacent heat sinks.

4. The stepless regulating valve structure for controlling furnace pressure according to claim 1 is characterized in that: Both ends of the rotating rod pass through the flange pipe, wherein a worm is installed on the first end of the rotating rod, and a worm wheel meshing with the worm is installed on the output end of the servo motor.

5. The stepless regulating valve structure for controlling furnace pressure according to claim 4 is characterized in that: The first end of the rotating rod is connected to a rotating joint, and the rotating joint serves as an input end of cold air. The second end of the rotating rod serves as an output end of cold air.

6. The stepless regulating valve structure for controlling furnace pressure according to claim 4 is characterized in that: The shape of the valve plate is circular, which matches the shape of the central hole of the flange pipe.

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