Water accumulation device capable of reducing liquid-gas ratio of wet dust removal fan

Abstract

The utility model discloses a water accumulation device capable of reducing the liquid-gas ratio of a wet dust removal fan, which comprises a dust removal box body and an air inlet, an air outlet is arranged at the right conical end, a dust removal section and an air-liquid separation section which are communicated with each other are arranged in the dust removal box body, and support frames are arranged at two ends of the air-liquid separation section. A plurality of wave-shaped gas-liquid separation plates are arranged between the supporting frames at intervals, a circulation channel is formed between every two adjacent wave-shaped gas-liquid separation plates, second demisting folded plates are arranged on wave crests and wave troughs of the wave-shaped gas-liquid separation plates, the sections of the second folded plates are arc-shaped, first demisting folded plates are arranged on the wave-shaped gas-liquid separation plates between every two adjacent second folded plates, and second demisting folded plates are arranged on the wave-shaped gas-liquid separation plates between every two adjacent second folded plates. The section of the first demisting folded plate is 7-shaped, a demisting curtain is arranged at the air outlet, and the demisting curtain at least comprises a first demisting silk screen, a second demisting silk screen and a third demisting silk screen. According to the utility model, the liquid-gas ratio of the wet dust removal fan can reach the standard, and the safety production of other electrical equipment can be ensured.

Description

Technical Field

[0001] The utility model relates to a dust removal fan for mining, in particular to a water accumulation device capable of reducing the liquid-gas ratio of a wet dust removal fan. Background Art

[0002] When tunneling underground in coal mines, due to the poor air circulation at the excavation working face, dust will be generated and float in the air for a long time. In addition, the smoke and dust during blasting cannot be dispersed quickly. For the physical and mental health of underground workers, dust removal fans must be installed at the excavation working face for dust removal. At present, most of the dust removal fans used underground adopt wet dust removal. Wet dust removal fans consume a lot of water, and dust removal fans are equipped with gas-liquid separation devices. However, the gas-liquid separation devices on the market are not ideal. The demisting plate structure of the existing dust removal fan can no longer make the liquid-gas ratio meet the requirements. In addition, the air velocity at the dust removal fan outlet is fast and contains too much water. Since the rear of the dust removal fan outlet is mostly equipped with power supplies and electrical equipment, it will not only seriously affect the physical and mental health of workers, but also affect production and may even cause safety hazards. Utility Model Content

[0003] The utility model aims at the problems existing in the wet dust removal fan in the above-mentioned prior art and provides a water accumulation device for reducing the liquid-to-gas ratio of the wet dust removal fan, which can greatly reduce the water content in the air after dust removal by the dust removal fan, reduce the liquid-to-gas ratio, and ensure production safety.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problems is: a water accumulation device capable of reducing the liquid-gas ratio of a wet dust removal fan, comprising a dust removal box body, the two ends of the dust removal box body are tapered ends, an air inlet is provided on the left tapered end, an air outlet is provided on the right tapered end, an exhaust pipe is provided on the air outlet, a dust removal section and a gas-liquid separation section connected to each other are provided in the dust removal box body, support frames are provided on both ends of the gas-liquid separation section, a plurality of corrugated gas-liquid separation plates are provided at intervals between the support frames, a flow channel is formed between adjacent corrugated gas-liquid separation plates, a second demisting folding plate is provided on the crests and troughs of the corrugated gas-liquid separation plates, the cross-section of the second folding plate is arc-shaped, a first demisting folding plate is provided on the corrugated gas-liquid separation plate between the adjacent second folding plates, the cross-section of the first demisting folding plate is in the shape of "7", a demisting curtain is provided at the air outlet, and the demisting curtain at least comprises a first demisting wire mesh, a second demisting wire mesh, and a third demisting wire mesh.

[0005] Furthermore, the mesh sizes of the first demisting wire mesh, the second demisting wire mesh and the third demisting wire mesh increase sequentially.

[0006] The beneficial effects of the utility model are as follows: the utility model adopts a corrugated multi-gas-liquid separation plate provided with a first demisting folding plate and a second demisting folding plate. After the gas with water mist after filtering the dust enters the channel between the gas-liquid separation plates, it continuously hits the plate surface. Since the first demisting folding plate and the second demisting folding plate are mutually staggered above and below the gas-liquid separation plate, most of the water in the water mist is blocked by the first demisting folding plate and the second demisting folding plate and accumulates in the demisting plate to form water droplets and falls into the water accumulation tank at the bottom of the demisting section and flows to the drain pipe. The remaining water in the water mist is captured when passing through the wire mesh demisting curtain composed of multiple layers of stainless steel wire meshes with different mesh sizes, and then flows out together along the drain pipe in the dust removal cylinder body, which can not only make the liquid-gas ratio of the wet dust removal fan reach the standard (the liquid-gas ratio reaches ≤0.15L / m 3 )), and can ensure the safe production of other electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the main sectional view of the local structure of the utility model.

[0008] Figure 2 for Figure 1 The enlarged structural diagram of AA in the figure,

[0009] Figure 3 For Figure 1 Enlarge the structural diagram at XX in the figure.

[0010] In the figure, 1. air inlet; 2. connecting plate; 3. tapered end; 4. dust removal section; 5. fixing groove; 6. corrugated gas-liquid separation plate; 7. first demisting folding plate; 8. gas-liquid separation section; 9. second demisting folding plate; 10. supporting frame; 11. demisting curtain; 11.1. first demisting wire mesh; 11.2. second demisting wire mesh; 11.3. third demisting wire mesh; 12. air outlet; 13. drain pipe. DETAILED DESCRIPTION

[0011] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in combination with specific implementation modes according to the accompanying drawings.

[0012] like Figure 1-3As shown, the water accumulation device capable of reducing the liquid-gas ratio of a wet dust removal fan comprises a dust removal box body, the two ends of the dust removal box body are tapered ends 3, the left tapered end is provided with an air inlet 1, the connecting plate 2 of the air inlet is connected to the dust removal motor, the right tapered end is provided with an air outlet 12, the air outlet is provided with an exhaust pipe 13, the dust removal box body has a dust removal section 4 and a gas-liquid separation section 8 connected to each other, support frames 10 are provided at both ends of the gas-liquid separation section, a plurality of corrugated gas-liquid separation plates 6 are arranged at intervals through fixed grooves 5 between the support frames, a flow channel is formed between adjacent corrugated gas-liquid separation plates, and the crests and troughs of the corrugated gas-liquid separation plates are provided with a plurality of corrugated gas-liquid separation plates. A second demisting folding plate 9 is provided, and the cross-section of the second demisting folding plate is arc-shaped. A first demisting folding plate 7 is provided on the corrugated gas-liquid separation plate between the adjacent second folding plates. The cross-section of the first demisting folding plate is in the shape of a "7". The "7"-shaped structure with different inclination angles is more conducive to prolonging the gas residence time and blocking the water mist in the gas. The above-mentioned corrugated gas-liquid separation plate, the first demisting folding plate and the second demisting folding plate are all made of steel material. The first demisting folding plate and the second demisting folding plate are welded to the corrugated gas-liquid separation plate. The cross-sectional width of the second demisting folding plate is about one-half of the cross-sectional width of the first demisting folding plate (such as Figure 1 As shown, a demisting curtain 11 is arranged at the air outlet, and the demisting curtain 11 at least comprises a first demisting wire mesh 11.1, a second demisting wire mesh 11.2, and a third demisting wire mesh 11.3 (the mesh numbers of the first demisting wire mesh, the second demisting wire mesh, and the third demisting wire mesh increase successively, that is, the apertures of the wire meshes decrease successively), and the demisting wire mesh is made of stainless steel 304 material, with a multi-layer opening rate of 80-85 (%), a weaving method of twill monofilament, a diameter of 3-5 (mm), a mesh number of 70-100 (mesh / inch), and a radial breaking strength of 0.1-10 (N / cm).

[0013] When the utility model is used, the dust-containing gas is sucked into the dust collector by the power of the fan and enters the dust removal fan from the air inlet. The water sprayer (not shown in the figure) arranged in the dust removal section sprays the dust-containing gas to make the dust wet, increase weight, condense and retain, so that the dust removal plate can capture the dust. At the same time, the sprayer also sprays the dust removal plate to enrich the filter body in the dust removal section with water. The water mist gas after filtering and dust removal passes through the corrugated gas-liquid separation plate again. Due to the continuous up and down undulating structure of the corrugated gas-liquid separation plate, the gas with water mist after filtering the dust enters the gas-liquid separation plate, and flows in a zigzag manner in the channels between the multiple gas-liquid separation plates, and continuously hits the plates. The surface is formed by the first and second demisting folding plates, and under the action of the first demisting folding plates and the second demisting folding plates, the retention time of the gas with water mist in the channel is greatly increased, and most of the moisture in the water mist is blocked and accumulated in the first and second demisting folding plates to form water droplets, which flow into the drain pipe along the water accumulation groove in the dust removal cylinder, so that the water mist gradually condenses into water droplets. When the gas after passing through the channel between the corrugated gas-liquid separation plates passes through the demisting curtain at the air outlet, since the demisting curtain has multiple layers of wire mesh with successively increasing mesh numbers, the remaining water mist in the gas is intercepted in turn and flows from top to bottom along the demisting curtain until it flows out along the drain pipe, and the clean air with almost no water mist is discharged from the air outlet.

[0014] The above implementation modes are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model has been described in detail with reference to specific embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, and should be included in the scope of protection of the claims of the utility model.

Claims

1. A water accumulation device capable of reducing the liquid-gas ratio of a wet dust removal fan, comprising a dust removal box, the two ends of the dust removal box are tapered ends (3), the left tapered end has an air inlet (1), the right tapered end has an air outlet (12), and the air outlet is provided with an exhaust pipe (13), characterized in that: The dust removal box has a dust removal section (4) and a gas-liquid separation section (8) which are connected to each other. Support frames (10) are arranged at both ends of the gas-liquid separation section. A plurality of corrugated gas-liquid separation plates (6) are arranged at intervals between the support frames. A flow channel is formed between adjacent corrugated gas-liquid separation plates. Second demisting folding plates (9) are arranged on the crests and troughs of the corrugated gas-liquid separation plates. The cross section of the second demisting folding plates is arc-shaped. A first demisting folding plate (7) is arranged on the corrugated gas-liquid separation plates between the adjacent second demisting folding plates. The cross section of the first demisting folding plate is in the shape of a "7". A demisting curtain (11) is arranged at the gas outlet. The demisting curtain comprises at least a first demisting screen (11.1), a second demisting screen (11.2), and a third demisting screen (11.3).

2. A water accumulation device capable of reducing the liquid-gas ratio of a wet dust removal fan according to claim 1, characterized in that: The mesh sizes of the first demisting wire mesh (11.1), the second demisting wire mesh (11.2), and the third demisting wire mesh (11.3) increase sequentially.

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