An emergency discharge device for loss-in-weight scales

Abstract

This utility model belongs to the field of material conveying equipment, specifically relating to an emergency discharge device for a loss-in-weight scale. The device includes a material metering bin, a loss-in-weight scale conveying screw, a material agitator, an emergency discharge port, an ash hopper, an emergency material pipe, an ash discharge valve, a main material pipe, and a submerged scraper conveyor. Installed below the metering bin of the loss-in-weight scale, this device can quickly discharge the material in the metering bin to downstream equipment and into the production system when the scale is jammed, crushed, or malfunctioning due to foreign objects. This improves the discharge efficiency, effectively reduces the labor intensity of the work, and is also low-cost, effectively screening out foreign objects and meeting the requirements of civilized production on site.

Description

Technical Field

[0001] This utility model relates to the field of loss-in-weight scale technology, specifically to an emergency discharge device for loss-in-weight scales. Background Technology

[0002] Loss-in-weight scales, as a conveying and metering device for powdery and small granular materials, are widely used in industries such as cement and metallurgy. In the metallurgical industry, loss-in-weight scales are often used to meter powdered flux, flue ash, and other materials. When the loss-in-weight scale malfunctions or is jammed by foreign objects, a large amount of material remains in the metering chamber, which cannot be conveyed to downstream equipment via the screw conveyor. This often requires a lot of manpower and resources to discharge the material by opening the side door, bagging and cleaning, which is time-consuming and creates a poor working environment. Furthermore, since flux is one of the key raw materials for slag formation in smelting furnaces in the metallurgical industry, prolonged shutdown of flux conveying equipment can easily cause production interruptions. Therefore, an emergency discharge device for loss-in-weight scales has been proposed. Utility Model Content

[0003] The purpose of this invention is to provide an emergency discharge device for loss-of-weight scales to solve the problems existing in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An emergency discharge device for a loss-in-weight scale includes a loss-in-weight scale metering chamber. A loss-in-weight scale screw conveyor is connected to the bottom of the metering chamber. A main material pipe is connected to the discharge end of the screw conveyor. An emergency discharge port is provided at the bottom of the screw conveyor, directly opposite the opening of the metering chamber. A hopper is provided directly below the emergency discharge port. An emergency material pipe is connected to the bottom of the hopper. A buried scraper conveyor is connected to the end of the emergency material pipe and is connected to the main material pipe.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] In the event of a loss-in-weight scale jamming or other malfunctions, this invention can quickly discharge materials into the downstream system, improving the discharge rate and effectively reducing the labor intensity of the workers. At the same time, the device has a low cost and can screen out foreign objects, providing a favorable guarantee for troubleshooting and handling. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 for Figure 1 A schematic diagram of the emergency discharge port.

[0010] Figure 3 for Figure 1 A schematic diagram of the structure of the middle ash hopper.

[0011] In the diagram, 1-loss-in-weight weighing bin, 2-material mixer, 3-loss-in-weight screw conveyor, 4-emergency discharge port, 401-emergency discharge port pipe, 402-interface flange, 403-perforated rubber gasket, 404-blind flange, 5-ash hopper, 501-screen, 6-emergency material pipe, 7-rotary discharge valve, 8-submerged scraper conveyor, 9-main material pipe. Detailed Implementation

[0012] The present invention will be further explained below with reference to the accompanying drawings.

[0013] like Figure 1-3 As shown, an emergency discharge device for a loss-in-weight scale includes a loss-in-weight scale metering chamber 1, a material mixer 2 installed inside the loss-in-weight scale metering chamber 1, a loss-in-weight scale screw conveyor 3 connected to the bottom of the loss-in-weight scale metering chamber 1, and a main material pipe 9 connected to the discharge end of the loss-in-weight scale screw conveyor 3; an emergency discharge port 4 is provided at the bottom of the loss-in-weight scale screw conveyor 3 directly opposite the opening of the loss-in-weight scale metering chamber 1, an ash hopper 5 is provided directly below the emergency discharge port 4, an emergency material pipe 6 is connected to the bottom of the ash hopper 5, a rotary discharge valve 7 is installed on the emergency material pipe 6, and a buried scraper conveyor 8 is connected to the end of the emergency material pipe 6, which is connected to the main material pipe 9.

[0014] In the above device structure, the metering bin 1 is a common metering bin that contains materials, the material agitator 2 uses agitator blades to agitate the materials to ensure material flowability, and the loss-in-weight screw conveyor 3 is used to transport materials during normal operation.

[0015] The emergency discharge port 4 is located directly below the metering chamber and includes an emergency discharge port pipe 401. One end of the emergency discharge port pipe 401 is welded to the shell of the loss-in-weight scale conveying screw 3 with a rounded transition. The rounded transition facilitates material flow. The other end is welded with an interface flange 402. A blind flange 404 is bolted to the interface flange 402. A perforated rubber gasket 403 that matches the flange is sandwiched between the two flanges to ensure the sealing of the contact surface.

[0016] The ash hopper 5 is located directly below the emergency discharge port 4, and the upper part of the conical ash hopper can collect all the material discharged from the emergency port 4. The upper part of the ash hopper is equipped with a screen 501 to filter out abnormalities in the material, preventing them from entering the system and damaging downstream equipment and clogging the material pipe.

[0017] Emergency material pipe 6 and main material pipe 9 are made of ordinary Q235 material. Rotary unloading valve 7 is installed in the middle of emergency material pipe 6 to control the amount of material added to the downstream equipment buried scraper conveyor 8, so as to avoid the buried scraper conveyor 8 from stopping due to excessive material.

[0018] The normal working process of the loss-in-weight scale is as follows: After being stirred by the material agitator 2, the material in the loss-in-weight scale metering bin 1 is conveyed by the loss-in-weight scale screw conveyor 3 to the main material pipe 9 and enters the downstream production process. The emergency discharge device process of the loss-in-weight scale is as follows: After being stirred by the material agitator 2, the material in the metering bin 1 enters the ash hopper 5 through the emergency discharge port 4, is filtered by the screen 501, and then enters the downstream scraper conveyor 8 through the emergency material pipe 6 and is conveyed to the downstream production process.

Claims

1. An emergency discharge device for a loss-in-weight scale, comprising a loss-in-weight scale metering chamber (1), wherein a loss-in-weight scale screw conveyor (3) is connected to the bottom of the loss-in-weight scale metering chamber (1), and a main material pipe (9) is connected to the discharge end of the loss-in-weight scale screw conveyor (3), characterized in that, An emergency discharge port (4) is provided at the bottom of the loss-in-weight screw conveyor (3) and directly opposite the opening of the loss-in-weight metering bin (1). A hopper (5) is provided directly below the emergency discharge port (4). An emergency material pipe (6) is connected to the bottom of the hopper (5). A buried scraper conveyor (8) is connected to the end of the emergency material pipe (6). The buried scraper conveyor (8) is connected to the main material pipe (9).

2. The emergency discharge device for a loss-in-weight scale as described in claim 1, characterized in that, The loss-in-weight weighing chamber (1) is also equipped with a material agitator (2).

3. The emergency discharge device for a loss-in-weight scale as described in claim 1, characterized in that, The emergency material pipe (6) is also equipped with a rotary unloading valve (7).

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