Dry ice cleaning dust extractor filter bag system

Abstract

The utility model provides a kind of dry ice cleaning dust remover filter bag system, including dry ice machine, spray dry ice device, spray dust removal device and dust-CO2 separation recovery device;Dust remover has multiple filter bags, dry ice machine is located outside dust remover, for supplying dry ice;Spray dry ice device is linked to dry ice machine and dust remover inside, and dry ice is sprayed to the filter bag in dust remover;Spray dust removal device is located directly above filter bag, for spraying filter bag to make filter bag produce sharp expansion and vibrate;Dust-CO2 separation recovery device is located below filter bag, for collecting the dust of filter bag.The utility model can realize for dust remover filter bag high-efficiency cleaning, so that it can be recycled.

Description

Technical Field

[0001] This utility model belongs to the field of filter bag cleaning technology, and specifically refers to a dry ice cleaning system for dust collector filter bags. Background Technology

[0002] Traditional dust collector cleaning technologies, such as mechanical rapping and compressed air backflushing, can remove dust caking and accumulation to some extent, but their inherent drawbacks cannot be ignored. For example, they can result in incomplete cleaning, risk of equipment damage, and secondary dust generation that pollutes the surrounding environment. While manual cleaning can address some of the shortcomings of traditional cleaning technologies, it requires a significant workforce and has relatively low cleaning efficiency, making it unsuitable for large-scale production.

[0003] While dry ice cleaning technology has a certain application foundation in the cleaning of electronic components, a series of problems have emerged when it is attempted to be directly applied to dust collectors. These include uneven coverage of the dry ice spray, which may lead to poor cleaning results; the low temperature of dry ice also poses a risk of condensation, which could damage the equipment; furthermore, the dust recovery efficiency is relatively low, affecting the overall performance. Utility Model Content

[0004] The purpose of this invention is to provide a dry ice cleaning system for dust collector filter bags, which solves the problems existing in the prior art, achieves efficient cleaning of dust collector filter bags, and enables them to be reused.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A dry ice cleaning system for dust collector filter bags includes a dry ice machine, a dry ice spraying device, a pulse-jet cleaning device, and a dust-CO2 separation and recovery device.

[0007] The dust collector contains multiple filter bags, and the dry ice machine is located outside the dust collector to supply dry ice.

[0008] The dry ice spraying device is connected to the dry ice machine and the dust collector, and sprays dry ice into the filter bags inside the dust collector.

[0009] The pulse-jet cleaning device is located directly above the filter bag and is used to blow air into the filter bag, causing it to expand rapidly and vibrate.

[0010] The dust-CO2 separation and recovery device is located below the filter bag and is used to collect the dust from the filter bag.

[0011] Furthermore, the dry ice spraying device includes a robotic arm located inside the dust collector. The output end of the robotic arm is equipped with a spray nozzle, through which dry ice is sprayed onto the surface of the filter bag by the spray nozzle that moves with the robotic arm.

[0012] Furthermore, the dry ice spraying device also includes a conveying pipe and a preheating device for maintaining the temperature of the dry ice particles. The preheating device is fixed on the dust collector and is also located on the conveying pipe at the front end of the robotic arm.

[0013] Furthermore, the dry ice spraying device also includes a control module and an infrared thermal imager for monitoring temperature. The infrared thermal imager is located above the spray nozzle in the robotic arm, and a regulating valve for controlling the spray pressure is installed in the spray nozzle. Both the regulating valve and the infrared thermal imager are electrically connected to the control module.

[0014] Furthermore, the dust collector includes an upper frame housing and a lower support, multiple filter bags are arranged in the upper frame housing, a robotic arm extends into the upper frame housing, a preheating device is fixed on the upper frame housing, and the dust-CO2 separation and recovery device includes an ash discharge hopper located below the multiple filter bags.

[0015] Furthermore, a CO2 emission device is also installed in the upper frame shell.

[0016] By adopting the above structure, this utility model can achieve the following technical effects:

[0017] (1) The surface temperature of the dust on the filter bag is rapidly reduced by dry ice spraying, causing it to freeze quickly. Then, the dust on the filter bag is removed and dropped into the dust-CO2 separation and recovery device, realizing the self-cleaning and collection of dust caking on the filter bag surface, which greatly reduces labor costs.

[0018] (2) No chemical residues or wastewater are generated during the dry ice cleaning process, which does not pollute the environment and meets environmental protection requirements;

[0019] (3) The entire cleaning process adopts a non-contact cleaning method to avoid friction and wear on the equipment surface and protect personnel safety. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Label Explanation:

[0022] 1. Dry ice machine; 2. Dry ice spraying device; 21. Preheating device; 22. Robotic arm;

[0023] 23 Infrared thermal imager; 24 Injection nozzle; 25 Conveying pipe; 3 Pulse-jet cleaning device;

[0024] 4. Dust-CO2 separation and recovery device; 5. Dust collector; 51. Filter bag;

[0025] 52 Upper frame housing; 53 Lower support; 6 CO2 emission device. Detailed Implementation

[0026] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0027] like Figure 1 As shown, this utility model discloses a dry ice cleaning system for dust collector filter bags, including a dry ice machine 1, a dry ice spraying device 2, a jet cleaning device 3, and a dust-CO2 separation and recovery device 4.

[0028] The dust collector 5 has multiple filter bags 51 for gas filtration. In this embodiment, the dust collector includes an upper frame housing 52 and a lower support 53, with multiple filter bags 51 arranged in the upper frame housing 52. A CO2 emission device 6 for emitting CO2 may also be provided in the upper frame housing 52.

[0029] The dry ice machine 1 is located outside the dust collector 5 and is used to supply dry ice.

[0030] The dry ice spraying device 2 is connected to the dry ice machine 1 and the dust collector 5, and is used to spray dry ice into the filter bag 51 inside the dust collector 5.

[0031] The jet cleaning device 3 is located directly above the filter bag 51. It is used to jet clean the filter bag 51, causing it to expand rapidly and vibrate, thereby achieving reverse jet cleaning of the filter bag. This is existing technology and will not be described in detail here.

[0032] The dust-CO2 separation and recovery device is located below the filter bag 51 and is used to collect the dust separated from the filter material. In this embodiment, the dust-CO2 separation and recovery device 4 includes an ash hopper located below the filter bag 51, and the ash hopper is mounted on the lower support 53.

[0033] Specifically, the dry ice spraying device 2 may include a robotic arm 22, which is located inside the dust collector 5 and can move within the dust collector. The output end of the robotic arm 22 is provided with a spray nozzle 24, which can spray dry ice onto the surface of the filter bag 51 through the spray nozzle that moves via the robotic arm 22.

[0034] Furthermore, the dry ice spraying device 2 may also include a conveying pipe 25 and a preheating device 21 for maintaining the temperature of the dry ice particles. The preheating device 21 is fixed to the dust collector 5 and is also located on the conveying pipe 25 at the front end of the robotic arm 22. The conveying pipe 25 connects the dry ice machine 1 and the dust collector 5, and can convey the dry ice in the dry ice machine 1 to the robotic arm 22. The preheating device 21 can maintain the temperature of the dry ice particles between -60°C and -40°C. In this embodiment, the robotic arm 22 extends into the upper frame housing 52, and the preheating device 21 is fixed to the side of the upper frame housing 52.

[0035] Furthermore, the dry ice spraying device 2 may also include a control module (not shown in the figure) and an infrared thermal imager 23 for monitoring temperature. The infrared thermal imager 23 is located above the spray nozzle 24 in the robotic arm 22. The spray nozzle 24 is equipped with a regulating valve (not shown in the figure) that can control the spray pressure. Both the regulating valve and the infrared thermal imager 23 are electrically connected to the control module.

[0036] When the system is in operation, the dry ice machine 1 starts supplying dry ice, which is then conveyed into the dust collector 5 via the dry ice spraying device 2. During this crucial step of entering the dust collector 5, to ensure a smooth and efficient dust removal process, the preheating device 21 at the front end of the robotic arm 22 must precisely maintain the temperature of the dry ice particles within the range of -60℃ to -40℃. This prevents the dry ice particles from becoming too hot and condensing, which could lead to adhesion and aggregation of the dry ice particles, or blockage of the spray nozzle 24.

[0037] Meanwhile, the robotic arm 22 operates in a serpentine manner according to the pre-set program, ensuring that the robotic arm 11 can efficiently and accurately cover every area of ​​the filter bag 51 with dry ice particles, and greatly improving the overall efficiency of the dust removal operation.

[0038] During the movement of the robotic arm 22, the working pressure of the dry ice sprayed from the nozzle 24 is controlled at 0.6-0.7 MPa. The infrared thermal imager 23 monitors the surface temperature of the filter bag 51 in real time. When the surface temperature of the filter bag 51 is detected to be higher than 80°C, the spray pressure is automatically adjusted to 0.8 MPa through the regulating valve to enhance the cooling effect of the dry ice and thus more effectively reduce the surface temperature of the filter bag.

[0039] During the operation of the dry ice spraying device 2, the CO2 emission device 6 can always be kept running so as to release excess CO2 in a timely manner.

[0040] After the dry ice spraying device 2 finishes its operation, the blow-drying device 3 starts running, with a blowing time of up to 1 minute. Then, the dust-CO2 separation and recovery device 4 collects the dust particles that fall off due to vibration.

[0041] After one process is completed, dry ice is sprayed again.

[0042] This process needs to be repeated 3 to 5 times until all the dust that has caked on the surface of the filter bag falls off.

[0043] The parameters such as the filtration velocity of the dust-CO2 separation and recovery device 4 and the blowing pressure of the pulse jet cleaning device 3 can be based on the daily data of the dust collector, saving the tedious steps of parameter adjustment.

[0044] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A dry ice cleaning system for dust collector filter bags, characterized in that: It includes a dry ice machine, a dry ice spraying device, a blower cleaning device, and a dust-CO2 separation and recovery device; The dust collector contains multiple filter bags, and the dry ice machine is located outside the dust collector to supply dry ice. The dry ice spraying device is connected to the dry ice machine and the dust collector, and sprays dry ice into the filter bags inside the dust collector. The pulse-jet cleaning device is located directly above the filter bag and is used to blow air into the filter bag, causing it to expand rapidly and vibrate. The dust-CO2 separation and recovery device is located below the filter bag and is used to collect the dust from the filter bag.

2. The dry ice cleaning filter bag system for a dust collector as described in claim 1, characterized in that: The dry ice spraying device includes a robotic arm located inside the dust collector. The output end of the robotic arm is equipped with a spray nozzle, which sprays dry ice onto the surface of the filter bag through the moving spray nozzle.

3. The dry ice cleaning filter bag system for a dust collector as described in claim 2, characterized in that: The dry ice spraying device also includes a conveying pipe and a preheating device for maintaining the temperature of the dry ice particles. The preheating device is fixed on the dust collector and is also located on the conveying pipe at the front end of the robotic arm.

4. The dry ice cleaning filter bag system for a dust collector as described in claim 2, characterized in that: The dry ice spraying device also includes a control module and an infrared thermal imager for monitoring temperature. The infrared thermal imager is located above the spray nozzle in the robotic arm. The spray nozzle is equipped with a regulating valve to control the spray pressure. Both the regulating valve and the infrared thermal imager are electrically connected to the control module.

5. The dry ice cleaning filter bag system for a dust collector as described in claim 3, characterized in that: The dust collector includes an upper frame housing and a lower support. Multiple filter bags are arranged in the upper frame housing. A robotic arm extends into the upper frame housing. A preheating device is fixed to the upper frame housing. The dust-CO2 separation and recovery device includes an ash discharge hopper located below the multiple filter bags.

6. The dry ice cleaning filter bag system for a dust collector as described in claim 5, characterized in that: The upper frame shell is also equipped with a CO2 emission device.

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