Explosion-proof dust collector facilitating ash cleaning

Abstract

The utility model relates to the technical field of explosion -proof dust collector, especially a kind of explosion -proof dust collector convenient for dust cleaning, including shell, the shell inside fixed mounting has flower board, the flower board inside is provided with multiple venturi pipes, the venturi pipe middle part outside is fixedly installed with connecting flange, the connecting flange is fixedly connected by bolt with flower board, the venturi pipe lower end extends to the filter bag upper end inside, the shell inside and located flower board top fixed mounting has spouted pipe, spouted pipe surface evenly fixedly installed with spout nozzle, the shell top fixedly installed with pressure relief pipe, the pressure relief pipe top fixedly installed with explosion venting mechanism, this explosion -proof dust collector convenient for dust cleaning can carry out uniform spouting to the dust on the surface of filter bag, can prevent filter bag from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof dust collector technology, and in particular to an explosion-proof dust collector that is easy to clean. Background Technology

[0002] After prolonged use, dust collectors accumulate a significant amount of dust. A dust explosion occurs when suspended dust particles in the air come into full contact with oxygen in the air, undergoing an instantaneous oxidation reaction under specific conditions. This reaction releases a large amount of heat, resulting in high temperature and high pressure. Explosion-proof dust collectors are necessary to treat dust-laden gases to meet emission standards and mitigate the risk of explosion.

[0003] Most existing explosion-proof dust collectors use pulse jet cleaning. An external pulse control device drives the jet pipe to send airflow through the nozzle into the filter bag area. The airflow impact causes the filter bag to vibrate, shaking off the dust attached to the surface and thus cleaning the filter bag. However, in the existing dust removal structure of explosion-proof dust collectors, the nozzles and filter bags are not properly aligned, and there is a lack of an effective airflow guiding structure. This causes the airflow to disperse easily after it is ejected from the nozzles, making it difficult to spray the filter bags evenly. As a result, some areas of the filter bags are over-blown, which can easily damage the filter bags and shorten their service life. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where uneven airflow during jetting leads to excessive localized blowing and damage to the filter bags, and to propose an explosion-proof dust collector that facilitates dust removal.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Design an explosion-proof dust collector for easy dust removal, including an outer shell, a tube sheet fixedly installed inside the outer shell, multiple venturi tubes running through the tube sheet, a connecting flange fixedly installed on the outer side of the middle of each venturi tube, the connecting flange being fixedly connected to the tube sheet by bolts, the lower end of each venturi tube extending to the inner side of the upper end of a filter bag, the upper end of the filter bag being fixedly connected to the tube sheet, a blowpipe fixedly installed inside the outer shell and above the tube sheet, blowpipe nozzles evenly fixedly installed on its surface, a pressure relief pipe fixedly installed on the top of the outer shell, and an explosion relief mechanism fixedly installed above the pressure relief pipe.

[0006] Preferably, a gasket is provided between the connecting flange and the tube sheet, and the gasket is made of a rubber structure inside.

[0007] Preferably, a sealing sleeve is fixedly installed on the outer surface of the lower end of the venturi tube, and the inside of the sealing sleeve is made of silicone.

[0008] Preferably, the explosion relief mechanism includes a flange base, which is fixedly connected to the pressure relief pipe by bolts. A top cover is threaded onto the upper end of the flange base. An explosion-proof plate is placed on the upper surface of the flange base. A pressure ring abuts against the upper surface of the explosion-proof plate. A spring is fixedly installed on the upper surface of the pressure ring. The upper end of the spring abuts against the top of the top cover.

[0009] Preferably, a first sealing ring, which is a rubber gasket, is fixedly installed on the lower surface of the pressure ring.

[0010] Preferably, a second sealing ring, which is a rubber gasket, is fixedly installed on the upper surface of the flange base.

[0011] Preferably, the explosion-proof sheet is an aluminum foil sheet.

[0012] Preferably, the interior of the top cover is made of ABS plastic.

[0013] The present invention proposes an explosion-proof dust collector that is easy to clean. The beneficial effects are as follows: When the explosion-proof dust collector is working, it sprays airflow into the venturi tube through the nozzle. The airflow blows onto the filter bag through the venturi tube, which can make the filter bag vibrate evenly and shake off the dust accumulated on the surface of the filter bag. Under the transition effect of the venturi tube, the filter bag is not easy to wear and break. When an explosion occurs inside the equipment, the explosion relief mechanism can guide the explosion energy to a safe area for release and prevent the outer shell from breaking. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an explosion-proof dust collector that is easy to clean, as proposed in this utility model. Figure 2 This is a schematic diagram of the explosion-proof mechanism in an explosion-proof dust collector that is easy to clean, as proposed in this utility model. Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 for Figure 1 A magnified structural diagram at point B in the middle.

[0015] In the diagram: 1. Outer shell; 2. Ash hopper; 3. Inlet pipe; 4. Outlet pipe; 5. Filter bag; 6. Tube plate; 7. Venturi tube; 71. Connecting flange; 8. Pulse pipe; 9. Pulse nozzle; 10. Pressure relief pipe; 11. Flange base; 12. Top cover; 13. Spring; 14. Pressure ring; 15. Explosion-proof plate; 16. First sealing ring; 17. Second sealing ring; 18. Gasket; 19. Sealing sleeve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Example 1: Refer to Figure 1 and Figure 2 An explosion-proof dust collector for easy cleaning includes a housing 1, with a dust hopper 2 fixedly installed at the lower end of the housing 1, through which dust falling from the surface of the filter bags 5 can be discharged. An air inlet pipe 3 is fixedly installed on one side of the dust hopper 2, through which dust-laden gas is introduced into the dust collector. An air outlet pipe 4 is fixedly installed on one side of the top of the housing 1, through which the purified gas is discharged.

[0018] A perforated plate 6 is fixedly installed inside the outer casing 1. Multiple venturi tubes 7 are threaded through the perforated plate 6. A connecting flange 71 is fixedly installed on the outer side of the middle of each venturi tube 7. The connecting flange 71 is bolted to the perforated plate 6, preventing the venturi tubes 7 from falling out of the inside of the perforated plate 6. A gasket 18 is placed between the connecting flange 71 and the perforated plate 6. The gasket 18 is made of rubber and improves the sealing between the connecting flange 71 and the perforated plate 6, preventing dust-laden gas from directly entering the top of the perforated plate 6 through the gap between the connecting flange 71 and the perforated plate 6.

[0019] Inside the outer casing 1 and above the tube sheet 6, a blowpipe 8 is fixedly installed. Blowpipe nozzles 9 are evenly fixedly installed on the surface of the blowpipe 8. The blowpipe 8 is connected to an external pulse control device. The blowpipe 8 performs pulse blowing through the blowpipe nozzles 9. The blowpipe nozzles 9 are located directly above the venturi tube 7 and the filter bag 5, and can directly blow dust off the filter bag 5.

[0020] The lower end of the Venturi tube 7 extends to the inner side of the upper end of the filter bag 5. The upper end of the filter bag 5 is fixedly connected to the tube sheet 6. A sealing sleeve 19 is fixedly installed on the outer surface of the lower end of the Venturi tube 7. The sealing sleeve 19 is made of silicone. The sealing sleeve 19 improves the sealing ring between the Venturi tube 7 and the filter bag 5, preventing dust-laden gas from directly entering the tube sheet 6 through the gap between the Venturi tube 7 and the filter bag 5. The diameter of the upper and lower ends of the Venturi tube 7 is larger than the diameter of the middle part. When the nozzle 9 blows downwards, the airflow speed increases when the airflow passes through the middle of the Venturi tube 7, forming a negative pressure zone around it. The negative pressure zone will draw in the surrounding gas, thereby increasing the airflow rate and improving the blowing effect on the filter bag 5. In addition, the transition through the Venturi tube 7 can reduce the impact of high-pressure airflow on the filter bag 5, allowing the airflow to blow downwards more evenly and avoiding local wear and tear on the filter bag 5.

[0021] A pressure relief pipe 10 is fixedly installed on the top of the outer casing 1, and an explosion relief mechanism is fixedly installed above the pressure relief pipe 10. When an explosion occurs inside the equipment, the explosion relief mechanism can release the explosive energy inside the outer casing 1 to a designated area, preventing the equipment from cracking, reducing the impact on surrounding equipment and personnel, and improving safety.

[0022] Working principle: When this explosion-proof dust collector, which is easy to clean, is in operation, dust-laden gas is introduced into the inlet pipe 3, and the filter bag 5 filters the dust-laden gas. The dust inside the gas remains on the surface of the filter bag 5, and the clean gas enters the tube sheet 6 through the venturi tube 7 and is discharged through the outlet pipe 4. The external pulse control equipment uses the blowpipe 8 to perform the blowing operation, and the blow nozzle 9 blows air into the venturi tube 7. The airflow blows downward into the filter bag 5 through the venturi tube 7. The filter bag 5 is impacted by the airflow and produces uniform vibration. The dust on the surface of the filter bag 5 falls downward and is collected and discharged through the dust hopper 2. In the event of an explosion inside the equipment, the explosion relief mechanism releases the explosion energy inside the outer shell 1 to a safe area, greatly improving safety.

[0023] Example 2: Refer to Figure 1-3 In another preferred embodiment of this utility model, based on embodiment 1, the explosion relief mechanism includes a flange base 11, which is fixedly connected to the pressure relief pipe 10 by bolts. A top cover 12 is threaded onto the upper end of the flange base 11. The top cover 12 is made of ABS plastic, which is more corrosion-resistant and lightweight than metal or other materials, and can be easily blown open by the explosive airflow. It should be noted that the threaded connection between the top cover and the flange base 1 should not be tightened too much, and a small airflow channel should be left to facilitate being blown open, while also ensuring the sealing under normal operating conditions. An explosion-proof sheet 15 is placed on the upper surface of the flange base 11. The explosion-proof sheet 15 is made of aluminum foil. The aluminum foil with an appropriate burst pressure is selected according to the specific situation. When the internal pressure of the equipment exceeds the safety value, it will burst instantly to prevent the outer shell 1 from bursting due to excessive pressure. A pressure ring 14 is abutted on the upper surface of the explosion-proof sheet 15. A spring 13 is fixedly installed on the upper surface of the pressure ring 14. The upper end of the spring 13 abuts against the top of the top cover 12. Under the elastic action of the spring 13, the pressure ring 14 can firmly abut against the explosion-proof sheet 15.

[0024] A first sealing ring 16 is fixedly installed on the lower surface of the pressure ring 14. The first sealing ring 16 is a rubber gasket. A second sealing ring 17 is fixedly installed on the upper surface of the flange base 11. The second sealing ring 17 is a rubber gasket. The sealing performance of the outer side of the explosion-proof disc 15 can be improved by the sealing rings 16 on both the upper and lower sides.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An explosion-proof dust collector facilitating dust cleaning, comprising a housing (1), characterized in that, A tube sheet (6) is fixedly installed inside the outer shell (1). Multiple venturi tubes (7) are installed through the tube sheet (6). A connecting flange (71) is fixedly installed on the outer side of the middle part of the venturi tube (7). The connecting flange (71) is fixedly connected to the tube sheet (6) by bolts. The lower end of the venturi tube (7) extends to the inner side of the upper end of the filter bag (5). The upper end of the filter bag (5) is fixedly connected to the tube sheet (6). A blowpipe (8) is fixedly installed inside the outer shell (1) and above the tube sheet (6). Blow nozzles (9) are evenly fixedly installed on the surface of the blowpipe (8). A pressure relief pipe (10) is fixedly installed on the top of the outer shell (1). A pressure relief mechanism is fixedly installed above the pressure relief pipe (10).

2. The explosion-proof dust collector convenient for ash cleaning according to claim 1, characterized in that, A gasket (18) is provided between the connecting flange (71) and the tube sheet (6), and the gasket (18) is made of rubber.

3. The dust cleaning facilitated, explosion-proof dust collector according to claim 1, characterized in that, A sealing sleeve (19) is fixedly installed on the outer surface of the lower end of the venturi tube (7), and the inside of the sealing sleeve (19) is made of silicone.

4. The explosion-proof dust collector convenient for ash cleaning according to claim 1, characterized in that, The explosion relief mechanism includes a flange base (11), which is fixedly connected to the pressure relief pipe (10) by bolts. A top cover (12) is threaded on the upper end of the flange base (11). An explosion-proof plate (15) is placed on the upper surface of the flange base (11). A pressure ring (14) abuts against the upper surface of the explosion-proof plate (15). A spring (13) is fixedly installed on the upper surface of the pressure ring (14). The upper end of the spring (13) abuts against the top of the top cover (12).

5. The explosion-proof dust collector with easy dust removal according to claim 4, characterized in that, The lower surface of the pressure ring (14) is fixedly installed with a first sealing ring (16), which is a rubber pad.

6. The explosion-proof dust collector convenient for ash cleaning according to claim 5, characterized in that, A second sealing ring (17) is fixedly installed on the upper surface of the flange base (11), and the second sealing ring (17) is a rubber gasket.

7. The dust cleaning explosion-proof dust collector according to claim 6, wherein The explosion-proof sheet (15) is an aluminum foil sheet.

8. The explosion-proof dust collector with easy dust removal according to claim 7, characterized in that, The interior of the top cover (12) is made of ABS plastic.

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