Limestone slurry tank anti-blocking dust removal and venting pipe

Abstract

The utility model provides a kind of limestone slurry tank anti-blocking dust removal venting pipe, including limestone slurry tank 10, the upper end of limestone slurry tank 10 is equipped with venting pipe 20, the import 21 of venting pipe is communicated limestone slurry tank 10, venting pipe 20 is the U-shaped pipe of outlet 22 downward, venting pipe 10 is equipped with impact spiral nozzle 30 and jet nozzle 40, impact spiral nozzle 30 is towards the import 21 of venting pipe, venting pipe is equipped with the reduced diameter section 23 in the approach outlet 22, jet nozzle 40 is towards the reduced diameter section 23.The utility model uses impact spiral nozzle to flush the import section of venting pipe, removes dust, dredges venting pipe;Use jet nozzle, fluid beam high speed passes through reduced diameter section, generates vacuum effect, accelerates the gas flow in venting pipe, slows down the ash powder retention of venting pipe, guarantees the unobstructed of venting pipe.The arc surface recessed in venting pipe is used in reduced diameter section, has good aerodynamic characteristics and structural stability, avoids appearing noise and vibration.Jet nozzle sprays water mist, can avoid appearing dust raising.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, and in particular to a limestone slurry tank anti-clogging dust removal and venting pipe. Background Technology

[0002] A limestone powder slurry preparation tank generally consists of a main body, a gas vent pipe, and a slurry tank agitator. During the slurry preparation process, the mixture of limestone powder and gas is discharged from the slurry tank through the vent pipe. The vent pipe is connected to the main body via a flange. During equipment operation, the limestone powder-containing gas mixes with the moisture in the limestone slurry tank and enters the vent pipe, easily causing blockage at the pipe opening. This blockage causes limestone powder in the slurry tank to spray out from the gaps in the agitator, falling onto the agitator and the top of the limestone slurry tank. Over time, this accumulation leads to frequent bearing failures in the agitator, rendering the desulfurization slurry preparation system unusable, causing instability in the desulfurization system, and in severe cases, exceeding environmental standards and affecting the long-term stable operation of the equipment. Maintaining the normal operation of the system requires increased on-site cleaning and maintenance work. Utility Model Content

[0003] The purpose of this utility model is to propose a limestone slurry tank anti-clogging and dust removal venting pipe to ensure the effective operation of the limestone slurry tank venting pipe and avoid dust pollution.

[0004] To achieve the above objectives, the technical solution of this utility model is: a limestone slurry tank anti-clogging and dust removal venting pipe, comprising a limestone slurry tank 10, wherein a venting pipe 20 is provided at the upper end of the limestone slurry tank 10, the inlet 21 of the venting pipe is connected to the limestone slurry tank 10, the venting pipe 20 is a U-shaped pipe with the outlet 22 pointing downwards, the venting pipe 20 is provided with an impact spiral nozzle 30 and a jet nozzle 40, the impact spiral nozzle 30 faces the inlet 21 of the venting pipe, the venting pipe is provided with a diameter reduction section 23 near the outlet 22, and the jet nozzle 40 faces the diameter reduction section 23.

[0005] Furthermore, as a conventional installation structure, the vent pipe 20 is installed on the limestone slurry tank 10 shown via a flange connection.

[0006] Furthermore, in order to achieve good airflow effect and structural stability, the reduced diameter section 23 is an arc-shaped surface that is recessed into the vent pipe.

[0007] Furthermore, a preferred necking section structure is that the narrowest part of the necking section 23 is recessed into half the diameter of the vent pipe.

[0008] Furthermore, a preferred necking section structure is that the radius of the arc surface of the necking section 23 is three times the diameter of the vent pipe.

[0009] Furthermore, a preferred necking section structure is that the arc center of the arc surface of the necking section 23 corresponds to the center of the U-shaped bend of the vent pipe.

[0010] Furthermore, in order to clear the vent pipe, the impact spiral nozzle 30 is installed on the impact spiral nozzle tube 31, which is inserted into the vent pipe from the top. The impact spiral nozzle 30 is a nozzle that sprays and diffuses water mist, and the impact spiral nozzle 30 is oriented toward the center of the inlet 21 of the vent pipe.

[0011] Furthermore, in order to control the operation of the impact spiral nozzle tube 31, the impact spiral nozzle tube 31 is provided with an impact control valve 32, which is an electrically controlled valve that controls the intermittent spraying of the impact spiral nozzle 30.

[0012] Furthermore, in order to achieve dust-free emissions and ensure smooth airflow in the vent pipe, the jet nozzle 40 is installed on the jet nozzle tube 41, which is inserted into the vent pipe from the top. The jet nozzle 40 is a nozzle that sprays a high-speed water mist jet, and the spray direction of the jet nozzle 40 corresponds to the middle of the narrowed section 23.

[0013] Furthermore, in order to control the operation of the jet nozzle tube, the jet nozzle tube 41 is provided with a jet control valve 42, which is an electrically controlled valve.

[0014] The beneficial effects of this invention are as follows: The use of an impact spiral nozzle to flush the inlet section of the vent pipe removes accumulated dust and clears the vent pipe; the use of a jet nozzle allows a high-speed fluid jet to pass through the narrowing section, creating a vacuum effect that accelerates gas flow within the vent pipe, reduces dust accumulation, and ensures unobstructed flow. The narrowing section, with its concave arc-shaped surface, provides excellent aerodynamic characteristics and structural stability, preventing noise and vibration. The jet nozzle sprays water mist, preventing dust generation.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the limestone slurry tank structure of this utility model; Figure 2 This is a structural diagram of the anti-clogging dust removal and venting pipe of this utility model; Figure 3 This is a diagram of the internal structure of the anti-clogging dust removal and venting pipe of this utility model; Figure 4 This is a plan view of the anti-clogging dust removal and venting pipe of this utility model; Figure 5 This is a schematic diagram of the operation of this utility model. Detailed Implementation

[0017] Example 1: like Figures 1 to 5 A limestone slurry tank anti-clogging and dust removal venting pipe includes a limestone slurry tank 10, which is equipped with a slurry tank agitator 11 to agitate the limestone slurry in the tank.

[0018] The upper end of the limestone slurry tank 10 is equipped with a vent pipe 20, which is a U-shaped pipe with a diameter d of 150 mm and a 180° elbow 24. One end of the vent pipe 20 is an inlet 21, which is equipped with a flange and is connected downwards to the limestone slurry tank 10 via the flange. The inlet 21 of the vent pipe communicates with the interior of the limestone slurry tank 10. The other end of the vent pipe 20 is an outlet 22, which faces downwards.

[0019] The vent pipe has a reduced diameter section 23 near the outlet 22, and the reduced diameter section 23 is an arc-shaped surface recessed into the vent pipe. In this embodiment, as shown... Figure 4 As shown, the arc center C1 of the constricted section 23 corresponds to the center C2 of the U-shaped bend in the vent pipe (C1 and C2 are at the same horizontal position as shown in the figure). The arc radius R of the constricted section 23 is 450mm, which is 3 times the diameter d of the vent pipe. The narrowest part of the constricted section 23 is recessed into half the diameter of the vent pipe, that is, the narrowest part 23a of the constricted section 23 is recessed to the centerline C of the vent pipe, so that the cross-sectional area of ​​the narrowest part of the constricted section 23 is half the cross-sectional area of ​​the complete pipe. The outlet 22 of the vent pipe is a complete circular pipe structure, and the cross-sectional area of ​​the pipe gradually increases from the narrowest part of the constricted section 23 to the outlet 22 of the vent pipe.

[0020] The vent pipe 20 is equipped with an impact spiral nozzle 30 and a jet nozzle 40.

[0021] The impact spiral nozzle 30 is a hollow cone nozzle with a spray angle range of 60°. The impact spiral nozzle 30 is mounted on an impact spiral nozzle tube 31, which is inserted into the vent pipe from the elbow 24. The impact spiral nozzle 30 is a nozzle that sprays diffused water mist, and it faces the center of the inlet 21 of the vent pipe. The impact spiral nozzle tube 31 is equipped with an impact control valve 32, which is an electrically controlled valve that controls the intermittent spraying of the impact spiral nozzle 30.

[0022] The jet nozzle is a hollow cone nozzle with a jet angle range of 45°. The jet nozzle 40 is mounted on the jet nozzle pipe 41, which is inserted into the vent pipe 20 from the elbow 24. The jet nozzle 40 is a nozzle that sprays a high-speed water mist jet. The spray direction of the jet nozzle 40 corresponds to the middle of the narrowed section 23, that is, to the middle of the narrowest part 23a of the narrowed section 23. More specifically, the center of the jet nozzle 40 is offset relative to the center C of the vent pipe by 0.25 times the pipe diameter d / 4. The jet nozzle pipe 41 is equipped with a jet control valve 42, which is an electrically controlled valve.

[0023] like Figure 5 When the limestone slurry tank is in operation, the jet nozzle 40 is activated, spraying water mist at high speed into the constriction section 23. The water mist drives the airflow through the constriction section 23 at high speed, creating a vacuum effect. This accelerates the airflow containing limestone dust in the vent pipe, preventing limestone dust from depositing inside. The vacuum effect draws the limestone dust-containing gas 50 into the constriction section 23 during the slurry preparation process. The limestone dust-containing gas mixes thoroughly with the water mist sprayed from the jet nozzle, forming a limestone fluid, which is discharged from the outlet 22 of the vent pipe and eventually flows into the downstream pipeline for disposal, preventing indiscriminate discharge and preventing limestone dust from entering the atmosphere.

[0024] Practice has proven that the concave venting pipe with an arc-shaped surface in the reduced diameter section has good airflow characteristics and structural stability, avoiding noise and vibration.

[0025] According to engineering practice, limestone powder tends to accumulate at the inlet 21 of the vent pipe, clogging the vent pipe. Under the control of the impact control valve 32, the impact spiral nozzle 30 sprays every 30 minutes to remove the accumulated limestone powder through intermittent spraying.

[0026] This invention enables the equipment to operate reliably and safely for a long period during the limestone slurry tank preparation process, avoids the random discharge of limestone powder, solves the problem of frequent blockage of the vent pipe during the limestone slurry preparation process and the problem of limestone powder dust caused by the blockage of the vent pipe, and achieves the goal of no blockage in the vent pipe and no limestone powder dust.

[0027] This utility model combines an irregularly shaped vent pipe, a high-efficiency jet nozzle, an electrical control system, and a high-efficiency impact spiral nozzle, making it easy to install, highly efficient, environmentally friendly, and easy to maintain.

Claims

1. A limestone slurry tank anti-clogging and dust removal vent pipe, comprising a limestone slurry tank (10), wherein the upper end of the limestone slurry tank (10) is provided with a vent pipe (20), the inlet (21) of the vent pipe is connected to the limestone slurry tank (10), and the vent pipe (20) is a U-shaped pipe with the outlet (22) pointing downwards, characterized in that, The vent pipe (20) is provided with an impact spiral nozzle (30) and a jet nozzle (40). The impact spiral nozzle (30) faces the inlet (21) of the vent pipe. The vent pipe has a reduced diameter section (23) near the outlet (22). The jet nozzle (40) faces the reduced diameter section (23).

2. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 1, characterized in that, The vent pipe (20) is installed on the limestone slurry tank (10) via a flange connection.

3. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 1, characterized in that, The reduced diameter section (23) is an arc-shaped surface recessed into the vent pipe.

4. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 3, characterized in that, The narrowest part of the reduced diameter section (23) is recessed into 1 / 2 of the diameter of the vent pipe.

5. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 3, characterized in that, The radius of the arc surface of the reduced diameter section (23) is three times the diameter of the vent pipe.

6. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 3, characterized in that, The arc center (C1) of the arc surface of the reduced diameter section (23) corresponds to the center (C2) of the U-shaped bend of the vent pipe.

7. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 1, characterized in that, The impact spiral nozzle (30) is installed on the impact spiral nozzle tube (31), which is inserted into the vent tube (20) from the top. The impact spiral nozzle (30) is a nozzle that sprays diffused water mist, and the impact spiral nozzle (30) is oriented toward the center of the inlet (21) of the vent tube.

8. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 7, characterized in that, The impact spiral nozzle tube (31) is equipped with an impact control valve (32), which is an electrically controlled valve that controls the intermittent spraying of the impact spiral nozzle (30).

9. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 1, characterized in that, The jet nozzle (40) is installed on the jet nozzle tube (41), which is inserted into the vent tube from the top. The jet nozzle (40) is a nozzle that sprays a high-speed water mist jet. The jet direction of the jet nozzle (40) corresponds to the middle of the narrowed section (23).

10. The limestone slurry tank anti-clogging dust removal venting pipe according to claim 9, characterized in that, The jet nozzle tube (41) is equipped with a jet control valve (42), which is an electrically controlled valve.

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