Detachable filter bag type pulverized coal sampling device

Abstract

This utility model discloses a detachable filter bag type coal powder sampling device, belonging to the technical field of coal powder sampling. It includes a separator and a filter bag; a feed pipe is provided on one side of the separator, and a feed on / off valve is provided on the feed pipe; a quick connector is provided at the end of the feed pipe; a discharge pipe is provided at the lower end of the separator, and a discharge on / off valve is provided on the discharge pipe; an air outlet is provided at the upper part of the separator, and the filter bag is detachably covered over the air outlet. This invention solves the technical problems of cumbersome operation procedures and complex equipment structure in traditional coal powder sampling methods.

Description

Technical Field

[0001] This utility model relates to the field of coal powder sampling technology, and in particular to a detachable filter bag type coal powder sampling device. Background Technology

[0002] Pulverized coal, as an important fuel, is widely used in power plant boilers and metallurgical blast furnaces. Its particle size and moisture content are key indicators affecting the economy and safety of power plant boilers and blast furnaces. Therefore, regular sampling of pulverized coal for accurate testing of these indicators is crucial for ensuring equipment operating efficiency and safety. However, most sampling devices commonly used in power plants are pressurized sampling devices. Their working principle involves using a sampling tube and sampling bottle, with compressed air as a sealing or ejector gas source. The sealing gas source prevents pulverized coal from "leaking" during sampling, while the ejector gas source is used to draw pulverized coal in through negative pressure. While this sampling method can meet certain sampling needs, it has many shortcomings for pulverized coal sampling in blast furnaces. The operation is complex, requiring a series of cumbersome steps, and the complex equipment structure increases manufacturing costs and the workload and difficulty for operators. Furthermore, this complex sampling method also affects sampling efficiency to some extent, hindering the rapid and accurate acquisition of pulverized coal samples.

[0003] Therefore, there is an urgent need for a simple, economical, and environmentally friendly coal powder sampling method to meet the needs of power plants and the metallurgical industry for convenient and efficient coal powder sampling. Summary of the Invention

[0004] The purpose of this invention is to provide a detachable filter bag type coal powder sampling device to address the above-mentioned problems, thereby solving the technical problems of cumbersome operation steps and complex equipment structure in traditional coal powder sampling.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A detachable filter bag type coal powder sampling device includes a separator and a filter bag; a feed pipe is provided on one side of the separator, and a feed on / off valve is provided on the feed pipe, and a quick connector is provided at the feed end; a discharge pipe is provided at the lower end of the separator, and a discharge on / off valve is provided on the discharge pipe; an air outlet is provided at the upper part of the separator, and the filter bag is detachably covered on the air outlet.

[0007] Furthermore, the separator is provided with several legs on its outer periphery.

[0008] Furthermore, it also includes several cable ties, through which the filter bag is detachably covered over the air outlet.

[0009] Furthermore, an annular groove is provided on the outer periphery of the air outlet, and the cable tie can tie the opening of the filter bag into the annular groove.

[0010] Furthermore, the lower part of the separator is inverted conical in shape.

[0011] Furthermore, the separator is configured in two parts, including an upper cylindrical part and a lower conical part, which are detachably connected. The lower end of the cylindrical part is connected to the upper part of the conical part. The feed pipe is disposed on the side wall of the cylindrical part, and the discharge pipe is disposed at the lower end of the conical part.

[0012] Furthermore, a first connecting plate is provided on both sides of the cylindrical part, and a second connecting plate is provided on both sides of the conical part. The first connecting plate and the second connecting plate are detachably connected by bolts.

[0013] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0014] 1. In use, this utility model involves connecting the feed pipe to the blast furnace pulverized coal injection pipe using a quick connector and opening the feed on / off valve. Under the pressure of nitrogen injection from the blast furnace pulverized coal injection pipe, pulverized coal enters the separator through the feed pipe. The injected gas flows upward through the detachable filter bag and dissipates into the atmosphere, while the pulverized coal is trapped inside the filter bag. After sampling is completed at an appropriate time, the feed on / off valve is closed. The pulverized coal falls into the separator under gravity, achieving separation of the pulverized coal from the injected gas. Finally, the discharge on / off valve is opened to pour out the pulverized coal, completing the sampling process. This utility model has a simple structure and few operating steps, solving the technical problems of cumbersome operating procedures and complex equipment structure in traditional pulverized coal sampling.

[0015] 2. This utility model features support legs to facilitate the support of the entire device; cable ties allow for the removal of the filter bag for easy replacement; and an annular groove on the outer periphery of the air outlet allows the filter bag opening to be secured to the groove, preventing it from being blown off by high-pressure air and improving reliability.

[0016] 3. The lower part of the separator of this utility model is inverted cone-shaped to facilitate the release of coal powder during sampling. The detachable separator facilitates the cleaning, disassembly and relocation of the internal structure of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional drawing of the present invention;

[0018] Figure 2 This is a three-dimensional view of the present invention from another perspective (filter bag not shown);

[0019] In the attached diagram, 1-separator, 2-filter bag, 3-support leg, 4-cable tie, 11-feed pipe, 12-feed shut-off valve, 13-quick connector, 14-discharge pipe, 15-discharge shut-off valve, 16-annular groove, 17-first connecting plate, 18-second connecting plate. Detailed Implementation

[0020] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0021] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Please see Figure 1 and Figure 2A detachable filter bag 2 type pulverized coal sampling device includes a separator 1 and a filter bag 2. A feed pipe 11 is provided on one side of the separator 1, with a feed on / off valve 12 on the feed pipe 11 and a quick connector 13 at the feed end. A discharge pipe 14 is provided at the lower end of the separator 1, with a discharge on / off valve 15 on the discharge pipe 14. An air outlet is provided at the upper part of the separator 1, and the filter bag 2 is detachably covered over the air outlet. In use, the feed pipe 11 is connected to the blast furnace pulverized coal injection pipe using the quick connector 13, and the feed on / off valve 12 is opened. At this time, under the pressure of nitrogen injection from the blast furnace pulverized coal injection pipe, pulverized coal enters the separator 1 through the feed pipe 11, and the injected airflow rises through the detachable filter bag 2 and dissipates into the atmosphere, while the pulverized coal is blocked inside the filter bag 2. After sampling is completed at the appropriate time, the feed valve 12 is closed. The pulverized coal falls into the separator 1 under gravity, achieving separation of the pulverized coal and the injected gas. Finally, the discharge valve 15 is opened to pour out the pulverized coal, thus completing the sampling.

[0025] In this embodiment, a plurality of support legs 3 are provided on the outer periphery of the separator 1. The support legs 3 facilitate the support of the entire device.

[0026] In this embodiment, several cable ties 4 are also included, and the filter bag 2 is detachably covered onto the air outlet by the cable ties 4. An annular groove 16 is provided on the outer periphery of the air outlet, and the cable ties 4 can tie the opening of the filter bag 2 into the annular groove 16. By providing the cable ties 4, the filter bag 2 can be detached for easy replacement; the cable ties 4 can be purchased directly from the market, and stainless steel cable ties 4 are preferred. By providing an annular groove 16 on the outer periphery of the air outlet, the opening of the filter bag 2 can be tied into the annular groove 16 to prevent the filter bag 2 from being blown off by high-pressure air, thereby improving reliability.

[0027] In this embodiment, the lower part of separator 1 is inverted conical. The inverted conical shape of the lower part of separator 1 facilitates the release of coal powder during sampling.

[0028] In this embodiment, the separator 1 is divided into an upper cylindrical section and a lower conical section, which are detachably connected. The lower end of the cylindrical section is connected to the upper end of the conical section. A feed pipe 11 is located on the side wall of the cylindrical section, and a discharge pipe 14 is located at the lower end of the conical section. Specifically, a first connecting plate 17 is provided on both sides of the cylindrical section, and a second connecting plate 18 is provided on both sides of the conical section. The first connecting plate 17 and the second connecting plate 18 are detachably connected by bolts. A sealing ring can be used to seal the conical section and the cylindrical section. The detachable separator 1 facilitates cleaning, disassembly, and movement of the internal structure of the device.

[0029] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. A detachable filter bag type pulverized coal sampling device, characterized by: It includes a separator and a filter bag; a feed pipe is provided on one side of the separator, a feed on / off valve is provided on the feed pipe, and a quick connector is provided at the end of the feed pipe; a discharge pipe is provided at the lower end of the separator, and a discharge on / off valve is provided on the discharge pipe; an air outlet is provided at the upper part of the separator, and the filter bag is detachably covered on the air outlet.

2. The detachable filter bag type pulverized coal sampling device according to claim 1, characterized in that: The separator is provided with several legs on its outer periphery.

3. The detachable filter bag type pulverized coal sampling device according to claim 1, characterized in that: It also includes several cable ties, through which the filter bag is detachably covered over the air outlet.

4. The detachable filter bag type pulverized coal sampling device according to claim 3, characterized in that: The outer periphery of the air outlet is provided with an annular groove, and the cable tie can tie the opening of the filter bag into the annular groove.

5. The detachable filter bag type pulverized coal sampling device according to claim 1, characterized in that: The lower part of the separator is inverted cone-shaped.

6. The detachable filter bag type pulverized coal sampling device according to claim 5, characterized in that: The separator is divided into two parts, including a cylindrical part at the top and a conical part at the bottom. The cylindrical part and the conical part are detachably connected, and the lower end of the cylindrical part is connected to the upper part of the conical part. The feed pipe is located on the side wall of the cylindrical part, and the discharge pipe is located at the lower end of the conical part.

7. The detachable filter bag type pulverized coal sampling device according to claim 6, characterized in that: The cylindrical portion has a first connecting plate on both sides, and the tapered portion has a second connecting plate on both sides. The first connecting plate and the second connecting plate are detachably connected by bolts.

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