A valve for rock wool electric smelting furnace blanking

Abstract

The utility model belongs to the rock wool manufacturing technical field discloses a kind of valve for rock wool electric smelting furnace blanking, including feed pipe, discharge pipe, hollow casing being arranged between feed pipe and discharge pipe, bottom plate being fixed on casing, collection bin is arranged on the center position of bottom plate, connecting rod mechanism is connected on the left and right side plates of collection bin, one end of connecting rod mechanism is connected with the piston rod of cylinder, the other end is connected with plugging plate, cylinder is fixed in the right side of bottom plate by vertical plate, connecting rod mechanism includes power shaft, transmission shaft, two power plates, connecting rod, power plate is detachably arranged on the left and right side plates of collection bin, power shaft is respectively passed through and arranged on left and right two power plates, transmission shaft is arranged directly below power shaft, and is arranged on the left and right side plates of collection bin by bearing, transmission shaft two ends are connected with power plate by key, one end of connecting rod is connected with transmission shaft, the other end is connected with plugging plate by hinge, so that plugging plate can be self-adapting adjustment and the contact angle of feed pipe bevel.

Description

Technical Field

[0001] This utility model belongs to the field of rock wool manufacturing, and specifically relates to a valve for feeding rock wool electric melting furnace. Background Technology

[0002] The electric furnace is the melting equipment in the rock wool production process. It is responsible for melting raw materials such as basalt into a molten substance, which flows through a trough onto a fiber-forming device, where it is processed into rock wool fibers under centrifugal force. To maintain a stable molten liquid level, raw materials need to be continuously replenished into the furnace chamber. Unlike cupola furnaces that use a material distributor, rock wool electric furnaces typically use a feed pipe on the furnace top for targeted feeding. Therefore, valves need to be installed on the feed pipe to precisely control the delivery and cutting off of raw materials.

[0003] Currently, gate valves are commonly used in this field to control the flow of materials through the feed pipe. When the valve is open, the raw material passes through freely; when the valve is closed, the gate is pressed down vertically to cut off the material flow. However, this traditional valve has the following technical defects in practical applications:

[0004] 1. Feeding problem: When the gate vertically cuts off the material flow, it is easy to trap the flowing material between the gate and the valve seat, which will cause the valve to fail to close completely, resulting in material leakage and affecting production stability.

[0005] 2. High opening and closing resistance: When the gate is closed, a large amount of raw material accumulates on the top of the gate, which means that when it is reopened, it is necessary to overcome great frictional resistance, and even manual intervention is required, which delays the production rhythm.

[0006] 3. Severe wear: During frequent opening and closing, the gate rubs directly against hard materials (such as basalt particles), causing rapid wear on the gate surface and even pitting, reducing sealing performance and shortening the valve's service life.

[0007] In addition, although there are various valve structures in the existing technology (such as rotary valves and butterfly valves), most of them are designed for gas or liquid media and rely on complex sealing structures (such as soft packing and limiting arc strips), which are not suitable for the interception control of highly abrasive solid particles. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model provides a valve for feeding rock wool electric melting furnace. It has a simple structure and is easy to operate. It can ensure reliable flow control while reducing friction with raw materials, reducing wear on the valve body, avoiding material jamming, improving equipment service life, and adapting to harsh working conditions with high frequency of opening and closing.

[0009] The technical solution adopted by this utility model is: a valve for feeding rock wool electric melting furnace, including a feed pipe, a discharge pipe, a hollow shell disposed between the feed pipe and the discharge pipe, and a base plate fixed on the shell. A collection bin is disposed at the center of the base plate, and a linkage mechanism is connected to the left and right side plates of the collection bin. One end of the linkage mechanism is connected to the piston rod of a cylinder, and the other end is connected to a sealing plate, so that the cylinder drives the linkage mechanism to rotate, thereby adaptively adjusting the contact angle between the sealing plate and the inclined opening of the feed pipe. The cylinder is fixed to the right side of the base plate by a vertical plate. On the side, the linkage mechanism includes a power shaft, a transmission shaft, two power plates, and a connecting rod. The power plates are detachably mounted on the left and right side plates of the collection chamber. The power shaft is respectively mounted through the left and right power plates. The transmission shaft is located directly below the power shaft and is mounted on the left and right side plates of the collection chamber via bearings. Both ends of the transmission shaft are connected to the power plates via keys. One end of the connecting rod is connected to the transmission shaft, and the other end is connected to the sealing plate via a hinge, so that the sealing plate can adaptively adjust the contact angle with the inclined opening of the feed pipe. When the sealing plate is closed, it cuts off the material flow by dragging the top.

[0010] Specifically, the transmission shaft includes a cylindrical shaft section and a hexagonal shaft section disposed within the cylindrical shaft section. The cross-section of the hexagonal shaft section is a regular hexagon. The hexagonal shaft section is used to enhance transmission stability and prevent relative rotation between the connecting rod and the transmission shaft.

[0011] Specifically, the upper end face of the connecting rod is provided with a hexagonal hole at one end and a round hole at the other end. The connecting rod is connected to the hexagonal shaft segment on the transmission shaft through the hexagonal hole to form a plug-in fit without relative rotation.

[0012] Specifically, the length of the connecting rod is such that the sealing plate is completely hidden inside the collection chamber when the valve is opened.

[0013] The beneficial effects of this utility model are: (1) This utility model has a simple structure and is easy to operate. By adjusting the valve opening, reliable interception is ensured while reducing friction with raw materials and avoiding material jamming. By driving the linkage mechanism with a cylinder, the feeding of high temperature and high viscosity rock wool melt is controlled, the amount of raw material input is accurately controlled, the production cost is reduced, and the material in the electric furnace is ensured to melt evenly, avoiding temperature fluctuations or unstable melt composition due to uneven feeding.

[0014] (2) This utility model has good sealing and stability performance, which can prevent the leakage of high temperature gas in the furnace, reduce heat energy waste, maintain a stable melting temperature, and adapt to the harsh working conditions of high frequency opening and closing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2This is the right view of the present invention;

[0017] Figure 3 This is a schematic diagram AA of the right view of this utility model;

[0018] The markings in the diagram are: 1. Feed pipe; 2. Discharge pipe; 3. Shell; 4. Base plate; 5. Collection bin; 6. Linkage mechanism; 61. Power shaft; 62. Transmission shaft; 63. Power plate; 64. Linkage rod; 7. Cylinder; 8. Sealing plate; 9. Vertical plate. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-3 As shown, a valve for feeding a rock wool electric melting furnace includes a feed pipe 1, a discharge pipe 2, a hollow shell 3 disposed between the feed pipe 1 and the discharge pipe 2, and a base plate 4 fixed to the shell 3. A collection bin 5 is disposed at the center of the base plate 4. A linkage mechanism 6 is connected to the left and right side plates of the collection bin 5. One end of the linkage mechanism 6 is connected to the piston rod of a cylinder 7, and the other end is connected to a sealing plate 8, so that the cylinder 7 drives the linkage mechanism 6 to rotate, thereby adaptively adjusting the contact angle between the sealing plate 8 and the inclined opening of the feed pipe 1. The cylinder 7 is fixed to the right side of the base plate 4 by a vertical plate 9. The linkage mechanism 6 includes a power shaft 61, a transmission shaft 62, and two moving parts. The power plate 63 is detachably mounted on the left and right side plates of the collection chamber 5. The power shaft 61 is respectively mounted through the left and right power plates 63. The transmission shaft 62 is located directly below the power shaft 61 and is mounted on the left and right side plates of the collection chamber 5 via bearings. Both ends of the transmission shaft 62 are connected to the power plate 63 via keys. One end of the connecting rod 64 is connected to the transmission shaft 62, and the other end is connected to the sealing plate 8 via a hinge, so that the sealing plate 8 can adaptively adjust the contact angle with the inclined opening of the feed pipe 1. When the sealing plate 8 is closed, it can adaptively adjust the angle to compensate for wear of the inclined opening or installation deviation, and cut off the material flow by dragging the top to ensure the sealing effect.

[0021] Preferably, the drive shaft 62 includes a cylindrical shaft section and a hexagonal shaft section disposed in the cylindrical shaft section. The cross-section of the hexagonal shaft section is a regular hexagon. The hexagonal shaft section enhances transmission stability and avoids slippage.

[0022] Preferably, one end of the upper surface of the connecting rod 64 is provided with a hexagonal hole and the other end is provided with a round hole. The connecting rod 64 is connected to the hexagonal shaft segment on the transmission shaft 62 through the hexagonal hole, forming a plug-in fit without relative rotation. The hexagonal shaft segment of the transmission shaft 62 and the hexagonal hole of the connecting rod 64 cooperate to transmit torque while allowing axial displacement, adapting to the movement trajectory of the sealing plate 8.

[0023] Preferably, the length of the connecting rod 64 is such that the sealing plate 8 is completely hidden inside the collection chamber 5 when the valve is opened.

[0024] In use, in the initial state, the piston of cylinder 7 is in a contracted state, and the sealing plate 8 is driven by the linkage mechanism 6 to fit tightly with the inclined opening of the feed pipe 1, forming a top-cutting cut-off. At this time, the material flow is completely blocked, and the rock wool melt cannot enter the discharge pipe from the feed pipe 1.

[0025] When preparing to discharge material, the valve is opened, the piston rod of cylinder 7 extends, pushing the power shaft 61 to rotate, which in turn drives the power plate 63 to rotate around the power shaft 61. The power plate 63 drives the transmission shaft 62 to rotate synchronously via a key connection. The hexagonal shaft section of the transmission shaft 62 engages with the hexagonal hole of the connecting rod 64, causing the connecting rod 64 to swing downwards without relative rotation. The connecting rod 64 pulls the sealing plate 8 away from the inclined opening of the feed pipe 1 and gradually retracts into the collection bin 5, completely concealing it to avoid obstructing the material flow. At this time, the feed pipe 1 and the discharge pipe 2 are connected, and the rock wool melt begins to be discharged.

[0026] When the material flow is cut off, the valve is closed, the piston rod of the cylinder 7 retracts, and drives the power shaft 61 and the transmission shaft 62 to rotate in the opposite direction. The connecting rod 64 pushes the sealing plate 8 upward, and the sealing plate 8 re-fits the inclined opening of the feed pipe 1 at an adaptive angle, thus cutting off the material flow by dragging the top.

Claims

1. A valve for feeding a rock wool electric melting furnace, comprising a feed pipe (1), a discharge pipe (2), and a hollow shell (3) disposed between the feed pipe (1) and the discharge pipe (2), characterized in that: It also includes a base plate (4) fixed on the housing (3). A collection chamber (5) is provided at the center of the base plate (4). A linkage mechanism (6) is connected to the left and right side plates of the collection chamber (5). One end of the linkage mechanism (6) is connected to the piston rod of the cylinder (7), and the other end is connected to the sealing plate (8). This enables the cylinder (7) to drive the linkage mechanism (6) to rotate, thereby causing the sealing plate (8) to adaptively adjust the contact angle between the inclined opening of the feed pipe (1). The cylinder (7) is fixed to the right side of the base plate (4) by the upright plate (9). The linkage mechanism (6) includes a power shaft (61), a transmission shaft (62), two power plates (63), and a connecting rod. (64) The power plate (63) is detachably mounted on the left and right side plates of the collection chamber (5). The power shaft (61) is respectively mounted through the two power plates (63). The transmission shaft (62) is mounted directly below the power shaft (61) and mounted on the left and right side plates of the collection chamber (5) through bearings. The two ends of the transmission shaft (62) are connected to the power plate (63) through keys. One end of the connecting rod (64) is connected to the transmission shaft (62), and the other end is connected to the sealing plate (8) through a hinge, so that the sealing plate (8) can adaptively adjust the contact angle with the inclined opening of the feed pipe (1). When the sealing plate (8) is closed, it cuts off the material flow by dragging the top.

2. The valve for feeding a rock wool electric melting furnace according to claim 1, characterized in that: The drive shaft (62) includes a cylindrical shaft section and a hexagonal shaft section disposed in the cylindrical shaft section, wherein the cross-section of the hexagonal shaft section is a regular hexagon.

3. The valve for feeding rock wool electric melting furnace according to claim 2, characterized in that: The upper end face of the connecting rod (64) is provided with a hexagonal hole at one end and a round hole at the other end. The connecting rod (64) is connected to the hexagonal shaft segment on the transmission shaft (62) through the hexagonal hole to form a plug-in fit without relative rotation.

4. The valve for feeding a rock wool electric melting furnace according to claim 3, characterized in that: The length of the connecting rod (64) is such that the sealing plate (8) can be completely hidden inside the collection chamber (5) when the valve is opened.

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