Pulse type cleaning device for welding dust filter cartridge

Abstract

The utility model discloses a pulse type cleaning device for a welding dust filter cartridge. The pulse type cleaning device comprises an ash cleaning chamber and an ash deposition chamber which are connected through a communicating pipe, a taking and placing opening is formed in the side wall of the ash removal chamber, a sealing door is arranged at the taking and placing opening, a supporting plate used for placing a filter cartridge is arranged in the ash removal chamber and connected with a lifting driving mechanism, flexible base plates used for sealing the end of the filter cartridge are arranged on the top wall of the supporting plate and the top wall of the ash removal chamber, and an air storage tank is arranged outside the ash removal chamber. A pulse type electromagnetic valve is arranged on a gas conveying pipe of the gas storage tank, and the gas conveying pipe is used for conveying gas into the filter cartridge body; the ash deposition chamber is a horizontal groove, a transition plate which obliquely extends upwards in the airflow direction is arranged in the ash deposition chamber, and a filtering baffle is arranged at the tail end of the ash deposition chamber. The filter cartridge dust recovery device is ingenious in structure, convenient to use and low in maintenance cost, can effectively improve the quality and efficiency of filter cartridge dust recovery, meanwhile prevents dust from polluting human bodies and the environment, prolongs the service life of the filter cartridge, and reduces the replacement cost.

Description

Technical Field

[0001] This utility model relates to the field of welding dust filter cartridge cleaning technology, and in particular to a pulse cleaning device for welding dust filter cartridges. Background Technology

[0002] Metal welding is an indispensable and important processing technology in modern industrial production and equipment maintenance. During welding, a large amount of fumes are generated, of which 95% come from particles produced by the solder and 5% are harmful gases produced by the volatilization of flux in the solder. These pollutants pose significant hazards to operators and the environment and must be treated and purified before being released into the atmosphere.

[0003] The existing welding dust purification device is a pulse-jet cartridge dust collector, which is equipped with an air inlet, filter cartridge, air outlet, air tank, pulse controller, jet valve, jet pipe, etc. The dust collector cartridge uses imported paper as the filter element, which has high dust removal efficiency. The device is equipped with a back-blowing system, which uses a constant differential pressure or timed control method to back-blow the filter cartridge with compressed air to reduce the amount of dust accumulated on the filter cartridge, thereby reducing the pressure difference of the filter cartridge to facilitate the discharge of clean air.

[0004] Although the back-flushing system in the aforementioned welding dust purification device is automatically blowing away dust, the pressure difference of the filter continues to increase over time. This increasing pressure difference causes a drop in the blower's inlet pressure, increasing the blower's power consumption. Furthermore, as the operating time increases, the filtration capacity of the filter cartridge gradually decreases, and the dust adhering to the filter cartridge becomes increasingly difficult to remove. Even if the back-flushing system continues to operate, the pressure difference between the inside and outside of the filter cartridge gradually increases, and more and more dust accumulates on the surface of the filter cartridge, resulting in greater and greater operating resistance. At this point, it is difficult to clean the dust accumulated on the surface of the filter cartridge using only its own dust removal system. During this process, the filter cartridge must be mechanically replaced and cleaned regularly to ensure filtration effect and cleanliness. Therefore, the general replacement cycle is three to five months.

[0005] To reduce operating costs, filter cartridges need to be cleaned manually periodically. Traditionally, this is done manually using compressed air to blow them away or using a water gun. Using compressed air to blow them away severely pollutes the ambient air; while using a water gun removes dust with the water flow, it leaves a lot of water residue on the filter cartridge surface, affecting its lifespan. Both of these cleaning methods can easily harm human health and cause significant environmental pollution. Summary of the Invention

[0006] To solve the above problems, this utility model provides a pulse cleaning device for welding dust filter cartridges, specifically adopting the following technical solution:

[0007] The welding dust filter cartridge pulse cleaning device of this utility model includes a cleaning chamber and a dust collection chamber connected by a connecting pipe. The cleaning chamber has a pick-up and drop-off port on its side wall, and a sealing door at the pick-up and drop-off port. A support plate for placing the filter cartridge is installed inside the cleaning chamber. The support plate is connected to a lifting drive mechanism. Flexible pads for sealing the ends of the filter cartridge are installed on both the support plate and the top wall of the cleaning chamber. An air storage tank is installed outside the cleaning chamber. A pulse-type solenoid valve is installed on the air supply pipe of the air storage tank, and the air supply pipe is used to supply air into the filter cartridge. The dust collection chamber is a horizontal trough. A transition plate extending upwards at an angle along the airflow direction is installed inside the dust collection chamber, and a filter baffle is installed at the end of the dust collection chamber.

[0008] One end of the connecting pipe is connected to the bottom of the side wall of the dust removal chamber, and the other end is connected to the bottom of the side wall of the ash accumulation chamber.

[0009] The lifting drive mechanism includes a cylinder located at the top of the dust removal chamber. The piston rod of the cylinder is connected to a pull rod, which is located inside the dust removal chamber and connected to a support plate.

[0010] The pull rod is slidably connected to a guide sleeve that is located at the top of the dust removal chamber and extends vertically downward.

[0011] The lifting drive mechanism is provided in four sets, which are evenly distributed around the support plate.

[0012] The gas supply pipe is located at the center of the top plate of the dust removal chamber and extends downward through the flexible pad above it, while the pulse solenoid valve is located on the upper surface of the top plate of the dust removal chamber.

[0013] The starting end of the transition plate is located at the connection between the connecting pipe and the ash collection chamber, and the end is set horizontally at 2 / 3 of the height of the ash collection chamber.

[0014] The filter baffle is a multi-layered breathable plate, and dust filter cotton is arranged between the breathable plates.

[0015] The welding dust filter cartridge pulse cleaning device provided by this utility model separates the dust removal and dust accumulation settings. During dust removal, the filter cartridge is placed in the dust removal chamber. By adjusting the height of the support plate, the filter cartridge is sealed to the flexible pads at both ends. Then, compressed air is rapidly and repeatedly sprayed into the filter cartridge by the pulse solenoid valve, so that the dust accumulated on the outer wall of the filter cartridge falls off and enters the dust accumulation chamber under the action of airflow. The gas is discharged from the dust accumulation chamber through the filter baffle, and the dust is deposited in the dust accumulation chamber under the action of the transition plate, which facilitates subsequent centralized treatment.

[0016] This utility model has a clever structure, is easy to use, and has low maintenance costs. It can effectively improve the quality and efficiency of dust recovery from filter cartridges, while preventing dust pollution to people and the environment, extending the service life of filter cartridges, and reducing replacement costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 yes Figure 1 Cross-sectional view. Detailed Implementation

[0019] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific working processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0020] like Figure 1 , 2 As shown, the welding dust filter cartridge pulse cleaning device of this utility model includes a dust removal chamber 1 and a dust accumulation chamber 2, which are connected together by a connecting pipe 3. One end of the connecting pipe 3 is connected to the bottom of the side wall of the dust removal chamber 1, and the other end is connected to the bottom of the side wall of the dust accumulation chamber 2. That is, the connecting pipe 3 is located at the bottom of the dust removal chamber 1 and the dust accumulation chamber 2, which is beneficial to blow as much of the filter cartridge dust cleaned in the dust removal chamber 1 as possible into the dust accumulation chamber 2.

[0021] The cleaning chamber 1 has a pick-up and drop-off port on its side wall, and a sealing door 4 is provided at the pick-up and drop-off port. After opening the sealing door 4, the filter cartridge can be placed on the support plate 5 inside the cleaning chamber 1. The support plate 5 is connected to the lifting drive mechanism. By adjusting the height of the support plate 5, the two ends of the filter cartridge can be pressed against the support plate 5 and the top wall of the cleaning chamber 1, respectively. In order to create a certain pressure difference between the inside and outside of the filter cartridge, thereby achieving the purpose of effective purging, flexible pads 6 for sealing the ends of the filter cartridge are also installed on the support plate 5 and the top wall of the cleaning chamber 1. In this embodiment, the support plate 5 has a rectangular structure, and four sets of lifting drive mechanisms are correspondingly provided, located at the four corners of the support plate 5. Each set of lifting drive mechanisms includes a cylinder 7 installed on the top of the cleaning chamber 1. The piston rod of the cylinder 7 is connected to a pull rod 8, and the bottom of the pull rod 8 is connected to the support plate 5. The pull rod 8 is slidably sleeved in a guide sleeve 9 that extends vertically downward from the top of the cleaning chamber 1, thereby maintaining the smooth vertical movement of the pull rod 8.

[0022] An air storage tank 10 is installed outside the dust removal chamber 1. An air supply pipe 11 for blowing into the filter cartridge is installed on the air storage tank 10. A pulse solenoid valve 12 is installed on the air supply pipe 11 located on the upper surface of the top plate of the dust removal chamber 1. The air supply pipe 11 is located at the center of the top plate of the dust removal chamber 1 and extends into the dust removal chamber 1 after passing through the flexible pad 6 on it.

[0023] In this embodiment, the dust collection chamber 2 is a horizontal trough with a rectangular cross-section. One end plate has an opening (i.e., an airflow inlet) for installing the connecting pipe 3, and the other end plate is a filter baffle 13. This filter baffle 13 is a multi-layered permeable plate, with dust filter cotton placed between adjacent permeable plates. This allows the airflow in the dust collection chamber 2 to be smoothly discharged while simultaneously intercepting dust carried in the airflow, thus purifying the air and preventing environmental pollution. The dust collection chamber 2 also includes a transition plate 14 extending upwards at an angle along the airflow direction. The starting end of the transition plate 14 is located at the connection between the connecting pipe 3 and the dust collection chamber 2, and the end is horizontally positioned at 2 / 3 of the height of the dust collection chamber 2.

[0024] In use, first open the sealing door 4 of the dust removal chamber 1, place the filter cartridge on the support plate 5 inside the dust removal chamber 1, and then close the sealing door 4; adjust the height of the support plate 5 through the lifting drive mechanism so that both ends of the filter cartridge are sealed to the support plate 5 and the flexible pad 6 on the top wall of the dust removal chamber 1; when the air pressure in the air tank 10 reaches 0.6MPa, start the pulse solenoid valve 12 to allow the purging gas to enter the filter cartridge through the air supply pipe 11, and perform high-pressure purging of the inside of the filter cartridge by controlling the opening frequency of the pulse solenoid valve 12, so that the dust deposited on the outer surface of the filter cartridge will continuously fall off; at the same time, the dust blown off will continuously enter the dust accumulation chamber 2 through the connecting pipe 3 along with the airflow inside the dust removal chamber 1. When the airflow passes through the transition plate 14, it climbs uphill and the flow rate slowly decreases, and the dust carried in it is largely deposited in the dust accumulation chamber 2 behind the transition plate 14; when the airflow passes through the filter baffle 13 and is discharged outward, a small amount of dust carried in it is filtered again. After the filter cartridge is purged, close the pulse solenoid valve 12, let it stand for a period of time, open the sealing door 4, take out the filter cartridge, and then remove the filter baffle 13 at the end of the dust collection chamber 2 to clean the accumulated dust, thus completing this cleaning work.

[0025] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are 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.

Claims

1. A pulse-type cleaning device for welding dust filter cartridges, characterized in that: It includes a cleaning chamber and an ash collection chamber connected by a connecting pipe; the cleaning chamber has an access port on its side wall, and a sealing door at the access port; a support plate for placing filter cartridges is installed inside the cleaning chamber, and the support plate is connected to a lifting drive mechanism; flexible pads for sealing the ends of filter cartridges are installed on both the support plate and the top wall of the cleaning chamber; an air storage tank is installed outside the cleaning chamber, and a pulse-type solenoid valve is installed on the air supply pipe of the air storage tank, and the air supply pipe is used to supply air into the filter cartridge; the ash collection chamber is a horizontal trough, and a transition plate extending upwards at an angle along the airflow direction is installed inside the ash collection chamber; a filter baffle is installed at the end of the ash collection chamber.

2. The pulse-type cleaning device for welding dust filter cartridges according to claim 1, characterized in that: One end of the connecting pipe is connected to the bottom of the side wall of the dust removal chamber, and the other end is connected to the bottom of the side wall of the ash accumulation chamber.

3. The pulse-type cleaning device for welding dust filter cartridges according to claim 1, characterized in that: The lifting drive mechanism includes a cylinder located at the top of the dust removal chamber. The piston rod of the cylinder is connected to a pull rod, which is located inside the dust removal chamber and connected to a support plate.

4. The pulse-type cleaning device for welding dust filter cartridges according to claim 3, characterized in that: The pull rod is slidably connected to a guide sleeve that is located at the top of the dust removal chamber and extends vertically downward.

5. The pulse-type cleaning device for welding dust filter cartridges according to claim 4, characterized in that: The lifting drive mechanism is provided in four sets, which are evenly distributed around the support plate.

6. The pulse-type cleaning device for welding dust filter cartridges according to claim 1, characterized in that: The gas supply pipe is located at the center of the top plate of the dust removal chamber and extends downward through the flexible pad above it, while the pulse solenoid valve is located on the upper surface of the top plate of the dust removal chamber.

7. The pulse-type cleaning device for welding dust filter cartridges according to claim 1, characterized in that: The starting end of the transition plate is located at the connection between the connecting pipe and the ash collection chamber, and the end is set horizontally at 2 / 3 of the height of the ash collection chamber.

8. The pulse-type cleaning device for welding dust filter cartridges according to claim 1, characterized in that: The filter baffle is a multi-layered breathable plate, and dust filter cotton is arranged between the breathable plates.

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