Filter capable of replacing filter screen on line

Abstract

The utility model relates to the field of waste gas treatment, and discloses a filter with a filter screen capable of being replaced online. The filter comprises a shell, a partition plate, the filter screen, an access door cover plate, a temporary sealing plate and an internal framework, a waste gas inlet and a waste gas outlet are formed in two ends of the shell; the partition plate is arranged in the shell, is connected with the two inlets and outlets and divides the inner cavity into two independent filtering chambers; the filter screen is arranged in the shell, and at least one filter chamber is arranged in each filter chamber and can be taken out from an access door on the shell; the access door cover plate is matched with the access door and can cover and seal the access door; the two groups of temporary sealing plates are rectangular and are respectively arranged at the two waste gas inlets and outlets; the filter realizes the on-line replacement function without interrupting the waste gas treatment flow when the waste gas is small in air volume, flexibly adapts to different working conditions, is stable in structure, prolongs the service life, facilitates the installation and maintenance of all parts, optimizes the flow of the waste gas, improves the filtering effect, fully utilizes the internal space, enhances the sealing performance, prevents the leakage of the waste gas, and improves the working efficiency. Meanwhile, the equipment operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment, and in particular to a filter with an online replaceable filter screen. Background Technology

[0002] In the current field of waste gas treatment, replacing traditional filters often requires shutting down the entire system. This not only interrupts waste gas treatment operations, affecting the continuity of production processes and reducing production efficiency, but also increases additional energy consumption and equipment wear and tear costs due to frequent start-ups and shutdowns. Moreover, the internal structure of traditional filters is relatively simple, making it impossible to flexibly replace and maintain the filter screen when treating small volumes of waste gas, thus failing to meet the diverse operating conditions required in actual production. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a filter with an online replaceable filter screen, which has the advantages of being more efficient and convenient in treating exhaust gas, and solves the problems mentioned in the background technology.

[0004] This utility model provides the following technical solution: a filter with an online replaceable filter screen, comprising a housing, a partition, a filter screen, an inspection door cover, a temporary sealing plate, and an internal frame;

[0005] The shell is a hollow cuboid structure, with an exhaust gas inlet and outlet at each of the opposite ends;

[0006] The baffle is located inside the shell and extends from one exhaust gas inlet / outlet to the other, dividing the internal chamber of the shell into two independent filtration chambers.

[0007] The filter screen is installed inside the housing, and at least one filter screen is installed in each filter chamber; and the housing is provided with an opening as an inspection door, through which the filter screen can be removed.

[0008] The access cover plate matches the access door and can cover the access door;

[0009] There are two sets of temporary sealing plates, one set for each of the exhaust gas inlet and outlet, and they have a rectangular structure.

[0010] In one embodiment of the utility model, the housing is made of corrosion-resistant stainless steel.

[0011] In one embodiment of the utility model, the partition has a flat plate structure and is connected to the internal frame.

[0012] In one embodiment of the utility model, the filter screen is made of chemically resistant synthetic fiber material.

[0013] In one embodiment of the utility model, the inspection door cover is made of corrosion-resistant stainless steel.

[0014] In one embodiment of the utility model, the access door cover frame includes a rubber sealing gasket.

[0015] In one embodiment of the utility model, the access door cover includes a handle.

[0016] In one embodiment of the utility model, the temporary sealing plate has a detachable structure, which is used to seal the front and rear temporary sealing plates on the side of the exhaust gas inlet and outlet when the exhaust gas volume is small, thereby opening the maintenance door cover on that side.

[0017] In one embodiment of the utility model, the internal skeleton is located inside the shell and has a cuboid frame structure composed of L-shaped angle iron and square steel, and is made of stainless steel.

[0018] In one embodiment of the utility model, a lifting lug is provided on the side of the housing for lifting the filter.

[0019] The beneficial effects of this utility model are:

[0020] The filter design allows for online replacement of the filter screen without interrupting the exhaust gas treatment process, even when the exhaust gas volume is low. It flexibly adapts to different operating conditions, has a stable structure, extends service life, and facilitates the installation and maintenance of each component. It optimizes exhaust gas flow, improves filtration efficiency, makes full use of internal space, enhances sealing to prevent exhaust gas leakage, and reduces equipment operating costs. Attached Figure Description

[0021] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0022] Figure 1 This diagram shows the main structure of a filter with an online replaceable filter screen according to an embodiment of the present invention.

[0023] Figure 2 This diagram shows a side view of a filter with an online replaceable filter screen according to an embodiment of the present invention. Detailed Implementation

[0024] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0025] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or 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.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0028] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0029] This utility model is a filter with an online replaceable filter screen, which is applied in related equipment in the field of waste gas treatment. It enables the waste gas treatment process to be replaced online without interruption under low air volume conditions, effectively removes fixed particulate matter in the waste gas, optimizes the waste gas treatment process, extends the service life of equipment, and reduces operating costs.

[0030] Specific references Figure 1 and Figure 2As a specific embodiment of the filter with an online replaceable filter screen of this utility model, the filter 100 is placed at the front end of the entire system to remove fixed particulate matter in the exhaust gas before introducing the exhaust gas into an RTO (Regenerative Thermal Oxidizer). The filter 100 includes a housing 110 for containing and protecting, a partition 140 for separating the chambers, a filter screen for filtering, an inspection door cover 120 for closing the inspection door, a temporary sealing plate 130 for use in specific operations, and an internal frame 210 for providing internal support structure.

[0031] The housing 110 is a hollow cuboid structure with an exhaust gas inlet and outlet at each of its opposite ends. Exhaust gas enters from one end, is treated by the filter 100, and then exits from the other end. Figure 1 As shown, in this embodiment, the circular channel on the right side of the filter 100 and the opposite end are the exhaust gas inlet and outlet. The exhaust gas enters from one end, is filtered, and is discharged from the other end.

[0032] A baffle 140 is located inside the housing 110, extending from one exhaust gas inlet / outlet to the other, dividing the internal chambers of the housing 110 into two independent filtration chambers. Both chambers can perform exhaust gas filtration operations, and also provide a structural basis for subsequent online filter replacement. Figure 1 As shown, in this embodiment, the partition 140 extends laterally through the interior of the housing 110, dividing the interior space of the housing 110 into two independent areas, each of which can serve as a filter chamber to filter exhaust gas.

[0033] Furthermore, in this invention, the filter screen is disposed inside the housing 110, and at least one filter screen is disposed in each filter chamber. The housing 110 is provided with an opening as a maintenance door, through which the filter screen can be removed. As one possible implementation, such as... Figure 1 As shown, in this embodiment, the filter 100 is divided into two chambers by a partition 140, and each chamber is equipped with a filter screen. When maintenance or replacement is required, the inspection door can be opened and the filter screen can be removed from the inspection door.

[0034] The access door cover 120 is matched with the access door and covers it. The size and shape of the access door cover are adapted to the access door, and its function is to completely cover it. When maintenance operations such as filter replacement are not required, installing the access door cover on the access door ensures the internal sealing of the housing, prevents exhaust gas leakage, and protects internal components such as the filter from external environmental influences. Figure 1 As shown, in this embodiment, the size and shape of the maintenance door cover 120 match the maintenance door opening on the side of the housing 110, and it can completely cover the maintenance door when closed.

[0035] There are two sets of temporary sealing plates 130, one set each for the exhaust gas inlet and outlet. They have a rectangular structure and are used to seal the exhaust gas inlet and outlet during operations such as filter replacement. This prevents exhaust gas leakage during operation, ensuring operational safety and a relatively stable environment inside the filter. Figure 1 As shown, the rectangular plate that opens on the left side in this embodiment is the temporary sealing plate 130. When it is necessary to replace the filter screen online, the temporary sealing plate is installed on the exhaust gas inlet and outlet on one side, thus achieving the effect of replacing the filter screen online.

[0036] In this embodiment, the housing 110 is made of corrosion-resistant stainless steel. When manufacturing the filter housing 110, stainless steel plates conforming to relevant standards are selected. Based on the design dimensions of the housing 110, the stainless steel is processed into the required cuboid shape through processes such as cutting, bending, and welding. During the welding process, appropriate welding techniques and parameters are used to ensure welding quality and avoid welding defects. Stainless steel has excellent corrosion resistance, effectively resisting the erosion of acidic or alkaline substances that may be present in the exhaust gas, extending the service life of the housing 110. At the same time, the smooth surface of stainless steel makes it difficult for impurities to adhere, facilitating cleaning and maintenance, ensuring a clean environment inside the filter 100, and contributing to improved filtration efficiency.

[0037] In this embodiment, the partition 140 has a flat plate structure and is connected to the internal frame 210. The partition is made of stainless steel of appropriate thickness and processed into a flat plate shape through cutting and grinding. An installation interface matching the partition 140 is provided on the internal frame 210, such as welded angle steel or channel steel. The partition 140 is fixed to the installation interface of the internal frame 210 by welding, ensuring that the partition 140 is firmly installed and tightly fitted to the internal frame 210. The flat plate partition 140 has a simple structure, facilitating processing and installation. Connecting the partition 140 to the internal frame 210 effectively divides the internal chamber of the filter 100 into two independent spaces, optimizing the flow path of exhaust gas within the filter 100, allowing the exhaust gas to fully contact the filter components, and improving the filtration effect. At the same time, this connection method also enhances the stability of the partition 140, making it less prone to deformation under the impact of exhaust gas, ensuring the normal operation of the filter 100.

[0038] In this embodiment, the filter screen is made of chemically resistant synthetic fiber material, which can adapt to complex environments containing chemicals such as acids, alkalis, and salts. This ensures the filtration effect, prevents the structure from changing due to corrosion and affecting the accuracy, extends the service life, reduces the frequency of replacement and maintenance costs, and improves the operating efficiency of the filter by 100%. By purchasing from external sources, the cost is low and the cost-effectiveness is high.

[0039] In this embodiment, the access cover 120 is made of corrosion-resistant stainless steel. A suitable stainless steel sheet is selected and processed according to the design dimensions of the access cover 120. During processing, the dimensional accuracy of the access cover 120 is ensured so that it can fit tightly with the opening on the housing 110. The shape of the access cover 120 can be formed by stamping, and the edges are polished to prevent scratches to operators. Like the housing 110, the stainless steel material of the access cover 120 effectively resists the corrosion of exhaust gases, ensuring its long-term performance. When internal maintenance or filter component replacement is required in the filter 100, the corrosion-resistant access cover 120 can be frequently opened and closed without damage, ensuring that operators can easily enter the filter 100 for operation. It also ensures the airtightness of the access cover 120 when closed, preventing exhaust gas leakage.

[0040] In this embodiment, the frame of the access door cover 120 includes a rubber sealing gasket. When replacing the filter screen online, the access door needs to be opened to remove and install the new filter screen. During this process, exhaust gas leakage must be prevented from affecting the normal operation of the filter. The rubber sealing gasket has good elasticity and can tightly fit the frame of the access door when the access door cover 120 is closed, effectively preventing exhaust gas from escaping from the gaps in the access door. This ensures that the filter 100 can maintain normal exhaust gas treatment processes and operate without interruption during filter screen replacement.

[0041] In this embodiment, the access door cover 120 includes a handle 121. A suitable type of handle 121, such as a square handle 121, is selected and fixed to the surface of the access door cover 120 by welding. When installing the handle 121, it is essential to ensure a secure connection capable of withstanding a certain amount of pulling force. The handle 121 allows operators to easily open and close the access door cover 120, improving operational portability. When internal maintenance of the filter 100 is required, operators can easily open the access door cover 120 using the handle 121 to enter the filter 100 for inspection, filter replacement, and other operations.

[0042] In this novel embodiment, the temporary sealing plate 130 has a detachable structure, used when the exhaust gas volume is small, to install the front and rear temporary sealing plates 130 on the exhaust gas inlet and outlet side to the exhaust gas inlet and outlet, and to seal the corresponding filter chamber. The temporary sealing plate 130 is routinely stored next to the filter 100 equipment and is equipped with hooks. Figure 1 As shown, when the filter screen on the left side of the filter needs to be replaced, if the exhaust gas volume is relatively small, use a temporary sealing plate 130 to seal the exhaust gas inlet and outlet at both ends of that side. This seals the side, preventing airflow, and the corresponding filter screen can be removed and replaced through the inspection door, thus achieving online filter screen replacement. Furthermore, during replacement... Figure 1When the left filter screen is in operation, ensure that the right filter chamber is in working condition. The exhaust gas will be filtered through the right filter chamber to ensure the normal operation of the exhaust gas treatment.

[0043] This allows the access door cover 120 to be opened, revealing a removable temporary sealing plate 130 structure. This structure enables the filter 100 to replace filter components online even with low exhaust gas flow rates, without stopping the entire exhaust gas treatment system, thus improving production efficiency. Simultaneously, this structure facilitates routine maintenance and storage of the temporary sealing plate 130, which can be removed when not in use. Furthermore, the excellent sealing performance ensures that exhaust gas will not leak when the temporary sealing plate 130 seals the inlet and outlet of the housing 110, guaranteeing the normal operation of the filter 100.

[0044] In this embodiment, the internal frame 210 is located inside the shell 110 and has a cuboid frame structure composed of L-shaped angle irons and square steel, made of stainless steel. The L-shaped angle irons and square steels are assembled into a cuboid frame by welding. The L-shaped angle irons and square steels are easy to process and install, improving production and assembly efficiency. The cuboid frame fits the shell 110, facilitating the layout of internal components. The stainless steel surface is smooth, making cleaning and maintenance convenient, and its high-temperature resistance ensures the equipment can operate normally under high-temperature conditions.

[0045] In this embodiment, the housing 110 is provided with lifting lugs 111 on its side for lifting the filter. These lugs are welded to the upper part of the side of the housing 110 with the inspection door. There are four lifting lugs 111, which facilitates handling and installation. The filter can be moved efficiently using lifting equipment through the lifting lugs. This ensures equipment safety, keeps the filter balanced during lifting, avoids damage to internal components, and the lifting lugs are strong enough to prevent accidents. It also facilitates maintenance and repair, allowing the filter 100 to be lifted for easy operation. Furthermore, it is standardized and universal, facilitating the use of common lifting equipment and operating methods, reducing costs and difficulty.

[0046] like Figure 1 As shown in the diagram, the main structure of the filter with online replaceable filter screen of this utility model mainly consists of a shell, an inspection door cover, a temporary sealing plate, and a partition. The inspection door cover facilitates quick maintenance and inspection, reducing workload and the risk of damage. The temporary sealing plate and the partition work together to allow for online replacement of parts without shutting down the machine, reducing production losses. The partition optimizes the internal space and improves the filtration effect. The shell and partition work together to enhance structural stability and extend service life. At the same time, standardized operation can improve safety, avoid contact with hazardous media, and online replacement and high-efficiency filtration reduce downtime and maintenance costs, extend the life of the filter media, and reduce the overall operating cost.

[0047] like Figure 2As shown in the side view of the filter with online replaceable filter screen of this utility model, the internal skeleton of the shell is mainly reflected. It can enhance the structural strength and stability, withstand internal pressure and external force, prevent shell deformation and damage, and extend service life.

[0048] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A filter having a filter screen which can be replaced on line, characterized in that, It comprises a shell, a partition, a filter screen, an access door cover plate, a temporary seal plate and an internal skeleton; The shell is a hollow cuboid structure, and opposite ends are respectively provided with a waste gas inlet and outlet; The partition is located inside the shell and extends from one waste gas inlet to the other, dividing the internal chamber into two independent filter chambers; The filter screen is arranged inside the shell, and at least one filter screen is arranged in each filter chamber; and the shell is provided with an opening as an access door, and the filter screen can be taken out from the access door; The access door cover plate matches the access door and can cover the access door; The temporary seal plate has two groups, and each waste gas inlet and outlet is provided with a group, which has a rectangular structure.

2. The filter with an online replaceable filter screen according to claim 1, characterized in that, The shell is made of corrosion-resistant stainless steel material.

3. The filter with an online replaceable filter screen according to claim 1, wherein, The partition has a flat plate structure, and the partition is connected with the internal skeleton.

4. The filter with an online replaceable filter screen according to claim 1, wherein, The filter screen is made of chemical fiber material resistant to chemical corrosion.

5. The filter with an online replaceable filter screen according to claim 1, wherein, The access door cover plate is made of corrosion-resistant stainless steel material.

6. The filter with an online replaceable filter screen according to claim 1, wherein, The access door cover plate frame includes a rubber sealing gasket.

7. The filter with an online replaceable filter screen according to claim 1, wherein, The access door cover plate includes a handle.

8. The filter with an online replaceable filter screen according to claim 1, wherein, The temporary seal plate has a detachable structure, which is used to seal the front and rear temporary seal plates on one side of the waste gas inlet and outlet when the waste gas flow is small, thereby opening the access door cover plate on this side.

9. The filter with an online replaceable filter screen according to claim 1, wherein, The internal skeleton is located inside the shell and has an L-shaped angle iron and a square steel composed of a cuboid frame structure, which is made of stainless steel material.

10. The filter with an online replaceable filter screen according to claim 1, wherein, The shell side is provided with lifting lugs for lifting the filter.

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