Aluminum profile electrostatic spraying exhaust gas dry type filtering and water removing device

Abstract

The utility model discloses a kind of aluminum profile electrostatic spraying waste gas dry type filtering water removal devices, including filter box, metal filter screen for removing water or water vapor produced by natural gas combustion and frame filter cotton for removing particulate matter in waste gas;The metal filter screen and frame filter cotton are all arranged in filter box, and metal filter screen is arranged in front of frame filter cotton along the airflow direction of waste gas.Metal filter screen and frame filter cotton are sequentially arranged along the airflow direction in filter box, water or water vapor produced by natural gas combustion is removed by front metal filter screen, and particulate matter in waste gas is removed by rear frame filter cotton, prolongs the service life of subsequent activated carbon, is stable and reliable, and relatively low in cost.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology in aluminum profile production, and in particular to a dry filtration and dewatering device for waste gas from electrostatic spraying of aluminum profiles. Background Technology

[0002] The electrostatic powder coating production line for aluminum profiles uses natural gas for heating and curing after coating. This curing process generates natural gas combustion waste gas and non-methane total hydrocarbon (NmH) waste gas. Environmental protection facilities for this waste gas typically employ a dry filter box + activated carbon adsorption + concentration desorption + catalytic combustion treatment method. Since natural gas is primarily composed of methane, combustion produces carbon dioxide and water. Moisture significantly impacts the adsorption efficiency and lifespan of activated carbon. Therefore, the industry practice is to add a separate exhaust stack for the natural gas combustion waste gas, with NmH waste gas emitted separately, increasing the company's environmental monitoring costs. Typically, filter bags are installed inside the dry filter box, primarily for filtering particulate matter and ensuring the effective adsorption of organic waste gas by activated carbon. Moisture significantly affects the adsorption efficiency and lifespan of activated carbon.

[0003] For example, patent CN217220776U discloses an aluminum profile spraying exhaust gas purification system, which includes a primary cyclone water spray tower for initial cyclone spray dust removal of exhaust gas, a secondary cyclone water spray tower for secondary cyclone spray dust removal of exhaust gas after purification by the primary cyclone water spray tower, a multi-barrel cyclone spray tower for cyclone spray water mist adsorption and dust removal of exhaust gas after purification by the secondary cyclone water spray tower, a dry filtration device for dry filtration of exhaust gas after purification by the multi-barrel cyclone spray tower, a molecular sieve UV degradation device for molecular sieve UV degradation of exhaust gas after purification by the dry filtration device, and an exhaust device for discharging the clean gas after purification by the molecular sieve UV degradation device into the air; the system is complex and has relatively high operating costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dry filtration and dehydration device for waste gas from electrostatic spraying of aluminum profiles, aiming to achieve stability, reliability, and relatively low cost.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: The aluminum profile electrostatic spraying exhaust gas dry filtration and water removal device includes a filter box, a metal filter screen for removing moisture or water vapor generated by natural gas combustion, and a frame filter cotton for removing particulate matter in the exhaust gas; the metal filter screen and the frame filter cotton are both located in the filter box, with the metal filter screen arranged in front of the frame filter cotton along the airflow direction of the exhaust gas.

[0006] Further or preferred: The width of the metal filter screen is 10-20cm.

[0007] The metal filter screen is a metal wire mesh with a mesh count ranging from 40 to 60.

[0008] The bottom of the filter box is equipped with a water collection tank, the metal filter screen is located above the water collection tank, and a drain valve connected to the water collection tank is provided on one side of the filter box.

[0009] The distance between the metal filter screen and the frame filter cotton is greater than 50cm.

[0010] The top of the filter housing is equipped with an openable cover.

[0011] The frame-type filter cotton includes a frame and a filter cotton bag disposed within the frame.

[0012] Compared with the prior art, this utility model has the following advantages: The aluminum profile electrostatic spraying exhaust gas dry filtration and water removal device has a reasonable structural design. The metal filter screen and frame filter cotton are arranged in sequence along the airflow direction in the filter box. The metal filter screen at the front removes the water or water vapor produced by natural gas combustion, and the frame filter cotton at the back removes particulate matter in the exhaust gas, which extends the service life of the subsequent activated carbon. It is stable, reliable and relatively low in cost. Attached Figure Description

[0013] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a schematic diagram of the device structure of this utility model.

[0014] In the picture: 1. Filter box body, 101. Box cover, 2. Metal filter screen, 3. Frame filter cotton, 4. Inlet pipe, 5. Outlet pipe. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0016] like Figure 1 As shown, the aluminum profile electrostatic spraying exhaust gas dry filtration and dehydration device includes a filter box 1, a metal filter screen 2 for removing moisture or water vapor generated by natural gas combustion, and a frame filter cotton 3 for removing particulate matter in the exhaust gas. Both the metal filter screen and the frame filter cotton are installed in the filter box 1, with the metal filter screen arranged in front of the frame filter cotton along the airflow direction of the exhaust gas. One end of the filter box is provided with an inlet pipe 4 for the exhaust gas to enter, and the other end of the filter box is provided with an outlet pipe 5 for the filtered exhaust gas to be discharged.

[0017] This utility model of a dry filtration and dehydration device for aluminum profile electrostatic spraying exhaust gas has a reasonable structural design. The filter box contains a metal filter screen and a frame filter cotton arranged sequentially along the airflow direction. The exhaust gas generated by combustion has a certain temperature, and the moisture or water vapor in the exhaust gas will condense after passing through the metal filter screen. That is, the water or water vapor generated by natural gas combustion is removed by the pre-filter metal screen, and the particulate matter in the exhaust gas is removed by the post-filter frame filter cotton, which extends the service life of the subsequent activated carbon. It is stable, reliable, and relatively low in cost.

[0018] Furthermore, the width of the metal filter 2 is 10-20cm; the metal filter is a metal wire mesh with a mesh count ranging from 40 to 60, which provides good condensation effect.

[0019] The bottom of the filter box 1 is equipped with a water collection tank, the metal filter screen is located above the water collection tank, and a drain valve connected to the water collection tank is provided on one side of the filter box.

[0020] The frame-type filter cotton includes a frame and filter cotton bags placed inside the frame, providing good filtration effect; the top of the filter box is equipped with an openable cover 101 for easy installation and later replacement.

[0021] Furthermore, the distance between the metal filter screen 2 and the frame-type filter cotton 3 is greater than 50cm, which can ensure smooth filtration of exhaust gas.

[0022] The above description is only a preferred embodiment of the present utility model. The above technical features can be arbitrarily combined to form multiple embodiments of the present utility model.

[0023] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A dry filtration and dewatering device for exhaust gas from electrostatic spraying of aluminum profiles, comprising a filter housing, characterized in that: It also includes a metal filter screen for removing moisture or water vapor produced by natural gas combustion and a frame-type filter cotton for removing particulate matter from the exhaust gas; both the metal filter screen and the frame-type filter cotton are located in the filter box, with the metal filter screen arranged in front of the frame-type filter cotton along the airflow direction of the exhaust gas.

2. The dry filtration and dewatering device for aluminum profile electrostatic spraying exhaust gas as described in claim 1, characterized in that: The width of the metal filter screen is 10-20cm.

3. The dry filtration and dewatering device for aluminum profile electrostatic spraying exhaust gas as described in claim 2, characterized in that: The metal filter screen is a metal wire mesh with a mesh count ranging from 40 to 60.

4. The dry filtration and dewatering device for aluminum profile electrostatic spraying exhaust gas as described in claim 3, characterized in that: The bottom of the filter box is equipped with a water collection tank, the metal filter screen is located above the water collection tank, and a drain valve connected to the water collection tank is provided on one side of the filter box.

5. The dry filtration and dewatering device for aluminum profile electrostatic spraying exhaust gas as described in claim 1, characterized in that: The distance between the metal filter screen and the frame filter cotton is greater than 50cm.

6. The dry filtration and dewatering device for aluminum profile electrostatic spraying exhaust gas as described in claim 1, characterized in that: The top of the filter housing is equipped with an openable cover.

7. The dry filtration and dewatering device for aluminum profile electrostatic spraying exhaust gas as described in claim 1, characterized in that: The frame-type filter cotton includes a frame and a filter cotton bag disposed within the frame.

Images