Filtering device for building material monomer combustion test equipment

Abstract

This utility model discloses an oil filtration device for a single-unit combustion test equipment for building materials, comprising a fixed flange, a cylindrical body, a fixed mesh frame, connecting screws, nuts and washers, a movable mesh frame, and a disc-shaped steel wire ball. The cylindrical body is installed between the equipment's exhaust pipe and dust collection inlet pipe. Fixed flanges are welded to both ends of the cylindrical body, and connecting flanges are welded to the ends of both the exhaust pipe and the dust collection inlet pipe near the outer edge of the cylindrical body. The fixed flanges are connected to the two connecting flanges by connecting bolts. This utility model's oil filtration device for a single-unit combustion test equipment for building materials can pre-filter most of the oily particles in the smoke and dust using the disc-shaped steel wire ball, extending the filter element's service life by nearly double, significantly reducing the cost of test consumables, minimizing test interruptions due to filter element replacement, and the disc-shaped steel wire ball is easy to disassemble, install, and maintain, making it suitable for long-term use in laboratory settings for single-unit combustion test equipment for building materials.

Description

Technical Field

[0001] This utility model relates to the technical field of fire resistance testing equipment for building materials, and in particular to an oil filtration device for a single combustion test equipment for building materials. Background Technology

[0002] Individual combustion testing equipment for building materials is one of the main components of the testing and evaluation of building energy-saving materials. In recent years, with the development of the construction industry, the country has attached great importance to the safety of building materials. The national standard GB50411-2019 "Code for Acceptance of Construction Quality of Building Energy-Saving Engineering" promulgated by my country clearly requires that the combustion performance of building energy-saving materials be tested as a key control item.

[0003] Currently, all building material combustion testing equipment used in laboratories must be equipped with dust collectors to meet environmental emission requirements. Commonly used dust collector filter elements are in the form of filter bags or filter cartridges. The combustion smoke and dust are filtered through the filter bags or filter cartridges in the dust collector and then discharged into the atmosphere after meeting environmental requirements.

[0004] During combustion tests, the flue gas contains a small amount of oily particles. These particles eventually pass through the dust collector and adhere to the surface of filter cartridges or bags. This severely affects the filtration efficiency and lifespan of the filter elements. To meet environmental protection requirements, frequent replacement of filter elements (cartridges or bags) is necessary, increasing costs for customers and significantly impacting the combustion test process. These shortcomings cause considerable inconvenience to test operators.

[0005] To overcome the shortcomings of the above-mentioned technologies, this utility model provides an oil filtration device that is easy to disassemble and clean, and extends the service life of the filter element. This not only reduces costs and expenses, but also overcomes the problem of frequent filter element replacement affecting operation.

[0006] Therefore, we propose an oil filtration device for a single combustion test equipment for building materials. Utility Model Content

[0007] The main purpose of this utility model is to provide an oil filtration device for a single combustion test equipment for building materials. This oil filtration device is easy to disassemble and assemble, and extends the service life of the filter element. It not only reduces costs and expenses, but also overcomes the problem of frequent filter element replacement affecting operation. It can effectively solve the problems in the background technology.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An oil filtration device for a single-unit combustion test equipment for building materials includes a fixed flange, a cylindrical body, a fixed mesh frame, connecting screws, nuts, a movable mesh frame, and a disc-shaped steel wire ball. The cylindrical body is installed between the equipment's exhaust pipe and dust removal inlet pipe. Fixed flanges are welded and fixed to both ends of the outer side of the cylindrical body. Connecting flanges are welded and fixed to the outer side of both the exhaust pipe and the dust removal inlet pipe near the cylindrical body. The fixed flanges are connected to the two connecting flanges by connecting bolts. The fixed mesh frame is welded and fixed inside the cylindrical body. The disc-shaped steel wire ball is fixed between the movable mesh frame and the fixed mesh frame by connecting screws, nuts, and washers.

[0009] By adopting the above technical solution, the smoke and dust generated by the single combustion test of building materials will first enter the cylinder from the equipment exhaust pipe. After most of the oily particles are filtered out by the disc-shaped steel wire ball, the remaining smoke and dust will enter the dust collector for further filtration through the dust removal inlet pipe. Finally, the qualified smoke and dust will be discharged into the atmosphere. The oil filtration device is firmly connected to the equipment exhaust pipe and the dust removal inlet pipe by means of connecting bolts through the fixed flange, ensuring that the smoke and dust circulate in the closed channel and avoiding leakage that would affect the filtration effect and the laboratory environment.

[0010] Furthermore, the fixed flange is made of stainless steel sheet metal, and eight bolt connection holes adapted to the connecting bolts are evenly distributed on the fixed flange.

[0011] By adopting the above technical solution, the eight evenly distributed bolt holes can ensure that the connecting bolts are evenly stressed. Combined with the stainless steel fixing flange, it not only ensures the sealing and stability of the connection between the fixing flange and the connecting flange and prevents smoke and dust leakage, but also extends the service life of the flange in the smoke and dust environment due to the corrosion resistance of stainless steel, making it suitable for long-term combustion test conditions in the laboratory.

[0012] Furthermore, the cylinder is made of stainless steel sheet metal into a tubular shape, and its inner diameter is adapted to the inner diameter of the equipment's exhaust pipe and dust removal inlet pipe.

[0013] By adopting the above technical solution, the tubular structure of the cylinder provides a smooth flow channel for the smoke and dust. The design of the inner diameter matching the front and rear pipes avoids turbulence or stagnation of the smoke and dust during the flow process due to sudden changes in pipe diameter, ensuring the continuity and efficiency of smoke and dust filtration. At the same time, the stainless steel sheet metal material gives the cylinder good corrosion resistance, which can resist the erosion of oily particles and corrosive components in the smoke and dust. It also has an attractive appearance and is suitable for use in laboratory environments.

[0014] Furthermore, the fixed mesh frame has a circular stainless steel flange structure at its edge and four evenly distributed first connection holes. The interior of the fixed mesh frame is made of stainless steel wire mesh, and the edge of the fixed mesh frame is welded and fixed to the inner wall of the cylinder.

[0015] By adopting the above technical solution, the fixed mesh frame is welded to the inner wall of the cylinder through the circular stainless steel flanges on the edge, forming a fixed support structure inside the oil filtration device. The stainless steel wire mesh inside can provide bottom support for the disc-shaped steel wool, preventing the steel wool from deforming or shifting under the impact of smoke and dust, and will not obstruct the flow of smoke and dust. The four evenly distributed first connection holes provide precise positioning for the connection with the movable mesh frame, ensuring that the disc-shaped steel wool is stably clamped. The stainless steel material also ensures that the fixed mesh frame is not easy to rust or be damaged during long-term use.

[0016] Furthermore, the edge of the movable mesh frame is a circular stainless steel flange structure, and each flange has four second connection holes that correspond one-to-one with the first connection holes. The interior of the movable mesh frame is a stainless steel wire mesh, and the mesh size and wire diameter of the stainless steel wire mesh are consistent with those of the stainless steel wire mesh of the fixed mesh frame.

[0017] By adopting the above technical solution, the movable mesh frame aligns with the first connecting holes of the fixed mesh frame through four second connecting holes. With the help of connecting screws, nuts, and washers, the disc-shaped steel wire ball is tightly clamped between them. The stainless steel wire mesh inside, which is the same size as the fixed mesh frame, works together with the fixed mesh frame to form a uniform constraint on the disc-shaped steel wire ball, preventing localized dents or gaps under the impact of smoke and dust, thus ensuring full utilization of the filtration area. At the same time, the circular stainless steel flange structure ensures the airtight connection between the movable and fixed mesh frames, preventing unfiltered smoke and dust from passing through edge gaps.

[0018] Furthermore, the disc-shaped steel wire ball is made by pressing multiple layers of stainless steel wire mesh.

[0019] By adopting the above technical solution, the disc-shaped structure formed by pressing multi-layer stainless steel wire mesh has a large specific surface area and abundant pores. When smoke and dust flow through it, oily particles are adsorbed and intercepted by the surface of the wire mesh, thereby effectively filtering out most of the oily particles. The stainless steel material gives it the characteristics of corrosion resistance and high temperature resistance, which can adapt to the high temperature and oily environment of smoke and dust in combustion tests. Moreover, its "easy-to-clean" feature facilitates subsequent maintenance—when the filtration efficiency decreases, it can be removed, cleaned with alkaline solution, and reused, reducing the cost of use.

[0020] Furthermore, the connecting screws, nuts, and washers are standard stainless steel parts, and the specifications of the connecting screws are adapted to the first connecting hole of the fixed grid frame and the second connecting hole of the movable grid frame.

[0021] By adopting the above technical solutions, the connecting screws, nuts, and washers of the stainless steel standard parts, on the one hand, rely on the stainless steel material to resist the corrosive components in the dust and prevent rusting and jamming, ensuring the long-term reliability of the connection structure; on the other hand, the universal interchangeability of the standard parts makes it easy to find suitable spare parts during maintenance or replacement, reducing maintenance difficulty, while the specifications that match the connecting holes ensure a tight connection between the movable and fixed mesh frames, preventing the disc-shaped steel wool from loosening and affecting the filtration effect. At the same time, the "easy disassembly" feature makes it convenient to periodically remove the disc-shaped steel wool for cleaning or replacement.

[0022] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention relates to an oil filtration device for a single combustion test of building materials. This device uses disc-shaped steel wire balls to pre-filter most of the oily particles in the smoke and dust, thereby reducing the adhesion of oily particles to the dust collector filter element. In practical applications, after installing the oil filtration device, the filter element only needs to be replaced once every 8 to 9 sets of test specimens, which is nearly twice the service life of the filter element when it is not installed (4 to 5 sets). At the same time, the cost of the disc-shaped steel wire balls is only about 10 yuan, and they can be reused by cleaning with alkaline solution. Compared with the frequent replacement of filter elements costing 1,000 yuan per set, this significantly reduces the cost of consumables for the test and brings significant economic benefits to users.

[0023] (2) The present invention provides an oil filtration device for a single combustion test equipment for building materials. Due to the reduced frequency of filter element replacement, the test interruption caused by frequent shutdowns for filter element replacement is reduced, ensuring the continuity and stability of the combustion test work. In addition, the disc-shaped steel wool ball of the oil filtration device is fixed by stainless steel standard parts such as connecting screws and nuts, which is convenient to disassemble and assemble. When the filtration efficiency decreases, the steel wool ball can be quickly disassembled for cleaning or replacement (a new steel wool ball can be directly replaced in an emergency). The maintenance operation is simple and reliable, without the need for complicated tools, and is particularly suitable for the long-term use needs of the laboratory for single combustion test equipment for building materials. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the oil filtration device of a single combustion test equipment for building materials according to this utility model.

[0025] Figure 2 This is a schematic diagram of the installation structure of the oil filtration device in a single combustion test equipment for building materials according to this utility model.

[0026] In the diagram: 1. Fixed flange; 2. Cylinder; 3. Fixed grid frame; 4. Connecting screw; 5. Nut; 6. Movable grid frame; 7. Disc-shaped steel wire ball; 8. Equipment exhaust duct; 9. Connecting flange; 10. Connecting bolt; 11. Dust removal inlet duct. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] An oil filtration system that is easy to install and disassemble and extends the life of the filter element not only needs to reduce costs and expenses, but also needs to overcome the problem of frequent filter element replacements affecting operation. Figure 1 , Figure 2 As shown, an oil filtration device for a single-unit combustion test equipment for building materials includes a fixed flange 1, a cylindrical body 2, a fixed mesh frame 3, connecting screws 4, nuts 5, a movable mesh frame 6, and a disc-shaped steel wire ball 7. The cylindrical body 2 is installed between the equipment's exhaust pipe 8 and the dust removal inlet pipe 11. Fixed flanges 1 are welded and fixed at both ends of the outer side of the cylindrical body 2. Connecting flanges 9 are welded and fixed at the ends of the equipment's exhaust pipe 8 and the dust removal inlet pipe 11 near the outer side of the cylindrical body 2. The fixed flanges 1 and the two connecting flanges 9 are connected by connecting bolts 10. The fixed mesh frame 3 is welded and fixed inside the cylindrical body 2. The disc-shaped steel wire ball 7 is fixed between the movable mesh frame 6 and the fixed mesh frame 3 by connecting screws 4, nuts 5, and washers.

[0029] During use, the smoke and dust generated by the single combustion test of building materials will first enter the cylinder 2 from the equipment exhaust pipe 8. After most of the oily particles are filtered out by the disc-shaped steel wire ball 7, the remaining smoke and dust will enter the dust collector for further filtration through the dust removal inlet pipe 11. Finally, the qualified smoke and dust will be discharged into the atmosphere. The oil filtration device is firmly connected to the equipment exhaust pipe 8 and the dust removal inlet pipe 11 by the connecting flange 9 of the fixed flange 1 and the connecting bolt 10, so as to ensure that the smoke and dust circulate in the closed channel and avoid leakage that would affect the filtration effect and the laboratory environment.

[0030] For example, such as Figure 1 , Figure 2 As shown, the present invention also includes a fixed flange 1 made of stainless steel sheet metal, and the fixed flange 1 has eight bolt connection holes that are adapted to the connecting bolts 10.

[0031] During use, the eight evenly distributed bolt holes allow the connecting bolts 10 to be evenly stressed. Combined with the stainless steel fixing flange 1, this not only ensures the sealing and stability of the connection between the fixing flange 1 and the connecting flange 9, preventing smoke and dust leakage, but also extends the service life of the flange in the smoke and dust environment due to the corrosion resistance of stainless steel, making it suitable for long-term combustion test conditions in the laboratory.

[0032] For example, such as Figure 2 As shown, the present invention also includes a cylindrical body 2 made of stainless steel sheet metal into a tubular shape, the inner diameter of which is adapted to the inner diameter of the equipment exhaust pipe 8 and the dust removal inlet pipe 11.

[0033] During use, the tubular structure of cylinder 2 provides a smooth flow channel for smoke and dust, while the design of the inner diameter matching the front and rear pipes avoids turbulence or stagnation of smoke and dust during the flow process due to sudden changes in pipe diameter, ensuring the continuity and efficiency of smoke and dust filtration. At the same time, the stainless steel sheet metal material gives cylinder 2 good corrosion resistance, which can resist the erosion of oily particles and corrosive components in smoke and dust, and its beautiful appearance makes it suitable for use in laboratory environments.

[0034] For example, such as Figure 1 As shown, the present invention also includes a fixed mesh frame 3 with a circular stainless steel flange structure on the edge and four evenly distributed first connecting holes, a stainless steel wire mesh inside the fixed mesh frame 3, and the edge of the fixed mesh frame 3 being welded and fixed to the inner wall of the cylinder 2.

[0035] In use, the fixed mesh frame 3 is welded to the inner wall of the cylinder 2 through the circular stainless steel flange on the edge, forming a fixed support structure inside the oil filter device. The stainless steel wire mesh inside can provide bottom support for the disc-shaped steel wool ball 7, preventing the steel wool ball from deforming or shifting under the impact of smoke and dust, and will not obstruct the flow of smoke and dust. The four evenly distributed first connection holes provide precise positioning for the connection with the movable mesh frame 6, ensuring that the disc-shaped steel wool ball 7 is stably clamped. The stainless steel material also ensures that the fixed mesh frame is not easy to rust or be damaged during long-term use.

[0036] For example, such as Figure 1 As shown, the present invention also includes a circular stainless steel flange structure on the edge of the movable mesh frame 6, each flange having four second connecting holes corresponding to the first connecting holes. The interior of the movable mesh frame 6 is a stainless steel wire mesh, and the mesh size and wire diameter of the stainless steel wire mesh are the same as those of the stainless steel wire mesh of the fixed mesh frame 3.

[0037] In use, the movable mesh frame 6 aligns with the first connecting holes of the fixed mesh frame 3 through four second connecting holes. Using connecting screws 4, nuts 5, and washers, the disc-shaped steel wire ball 7 is tightly clamped between them. The stainless steel wire mesh inside, identical in specifications to the fixed mesh frame 3, works together with the fixed mesh frame to uniformly constrain the disc-shaped steel wire ball, preventing localized dents or gaps under dust impact and ensuring full utilization of the filtration area. Simultaneously, the circular stainless steel flange structure ensures a tight seal between the movable and fixed mesh frames, preventing unfiltered dust from passing through edge gaps.

[0038] For example, such as Figure 1 As shown, the present invention also includes that the disc-shaped steel wire ball 7 is made of multiple layers of stainless steel wire mesh.

[0039] When in use, the disc-shaped structure formed by pressing multiple layers of stainless steel wire mesh has a large specific surface area and abundant pores. When smoke and dust flow through it, oily particles are adsorbed and intercepted by the surface of the wire mesh, thus effectively filtering out most of the oily particles. The stainless steel material gives it the characteristics of corrosion resistance and high temperature resistance, which can adapt to the high temperature and oily environment of smoke and dust in combustion tests. Moreover, its "easy-to-clean" feature facilitates subsequent maintenance - when the filtration efficiency decreases, it can be removed, cleaned with alkaline solution, and reused, reducing the cost of use.

[0040] For example, such as Figure 1 As shown, the present invention also includes the connecting screw 4, nut 5 and washer being stainless steel standard parts, and the specifications of the connecting screw 4 are adapted to the first connecting hole of the fixed mesh frame 3 and the second connecting hole of the movable mesh frame 6.

[0041] When in use, the connecting screws 4, nuts 5, and washers of the stainless steel standard parts, on the one hand, rely on the stainless steel material to resist the corrosive components in the smoke and dust, preventing rust and jamming, and ensuring the long-term reliability of the connection structure; on the other hand, the universal interchangeability of the standard parts makes it easy to find suitable spare parts when maintaining or replacing them, reducing the difficulty of maintenance. The specifications that match the connecting holes ensure a tight connection between the movable mesh frame 6 and the fixed mesh frame 3, preventing the disc-shaped steel wool 7 from loosening and affecting the filtration effect. At the same time, the "easy disassembly" feature makes it convenient to remove the disc-shaped steel wool for cleaning or replacement periodically.

[0042] It should be noted that this utility model is an oil filtration device for a single-unit combustion test of building materials. After the single-unit combustion test of building materials begins, the oily particulate smoke generated by combustion is discharged through the equipment's exhaust pipe 8 and first enters the cylinder 2 of the oil filtration device. At this time, the cylinder 2 is tightly connected to the equipment's exhaust pipe 8 and the connecting flanges 9 of the dust removal inlet pipe 11 via the fixed flanges 1 at both ends and the connecting bolts 10, ensuring that the smoke flows in a closed channel without leakage. When the smoke flows through the disc-shaped steel wire ball 7 in the cylinder 2, due to the disc-shaped steel wire... The ball is made of multiple layers of stainless steel wire mesh. Its large specific surface area and abundant pores can adsorb and intercept most of the oily particles in the smoke and dust. The fixed mesh frame 3 and the movable mesh frame 6 are tightly clamped by connecting screws 4, nuts 5 and washers to prevent it from deforming or shifting under the impact of smoke and dust, ensuring full utilization of the filtration area and ensuring the filtration effect. The remaining smoke and dust that has filtered out most of the oily particles enters the dust collector through the dust collection inlet pipe 11. After further filtration by the dust collector, the clean flue gas that meets the environmental protection requirements is discharged into the atmosphere. If the flow rate of the equipment does not meet the requirements during the test, indicating that the disc-shaped steel wool is blocked, the cylinder 2 can be removed by disassembling the connecting bolt 10, then the connecting screw 4 can be unscrewed, and the movable mesh frame 6 and the disc-shaped steel wool 7 can be taken out.

[0043] Clean the disc-shaped steel wool 7 in alkaline solution to remove the attached oil stains. Then, clamp it back between the fixed mesh frame 3 and the movable mesh frame 6. Then, put the cylinder 2 back in its original position and continue to use it. If the situation is urgent (such as needing to quickly resume the test), you can directly replace it with a new disc-shaped steel wool 7 (the cost of the steel wool is about 10 yuan). The operation is convenient. After installing an oil filtration device, the service life of the dust collector filter element is extended due to the reduction of oily particle adhesion: without the oil filtration device, a filter element needs to be replaced every 4 to 5 sets of test specimens (costing about 1,000 yuan); after installation, it only needs to be replaced once every 8 to 9 sets of test specimens, which greatly reduces the frequency and cost of filter element replacement, while avoiding the impact of frequent shutdowns on the test progress and improving the efficiency of laboratory work.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil filtration device for a single-unit combustion test equipment for building materials, comprising a fixed flange (1), a cylinder (2), a fixed mesh frame (3), connecting screws (4), nuts (5), a movable mesh frame (6), and a disc-shaped steel wire ball (7), characterized in that: The cylinder (2) is installed between the equipment exhaust pipe (8) and the dust removal inlet pipe (11). Fixed flanges (1) are welded and fixed at both ends of the cylinder (2). Connecting flanges (9) are welded and fixed at the ends of the equipment exhaust pipe (8) and the dust removal inlet pipe (11) near the outside of the cylinder (2). The fixed flange (1) and the two connecting flanges (9) are connected by connecting bolts (10). The fixed mesh frame (3) is welded and fixed inside the cylinder (2). The disc-shaped steel wire ball (7) is fixed between the movable mesh frame (6) and the fixed mesh frame (3) by connecting screws (4), nuts (5) and washers.

2. The oil filtering device of the building material monomer combustion test equipment according to claim 1, characterized in that: The fixed flange (1) is made of stainless steel sheet metal, and eight bolt connection holes that are adapted to the connecting bolts (10) are evenly distributed on the fixed flange (1).

3. The oil filtering device of the building material monomer combustion test equipment according to claim 1, characterized in that: The cylinder (2) is made of stainless steel sheet metal into a tubular shape, and its inner diameter is adapted to the inner diameter of the equipment exhaust pipe (8) and dust removal inlet pipe (11).

4. The oil filtering device of the building material monomer combustion test equipment according to claim 1, characterized in that: The fixed mesh frame (3) has a circular stainless steel flange structure on the edge and four evenly distributed first connection holes. The inside of the fixed mesh frame (3) is stainless steel wire mesh. The edge of the fixed mesh frame (3) is welded and fixed to the inner wall of the cylinder (2).

5. The oil filtering device of the building material monomer combustion test equipment according to claim 1, characterized in that: The movable mesh frame (6) has a circular stainless steel flange structure on its edge. Each flange has four second connection holes that correspond one-to-one with the first connection hole. The interior of the movable mesh frame (6) is made of stainless steel wire mesh, and the mesh size and wire diameter of the stainless steel wire mesh are the same as those of the fixed mesh frame (3).

6. The oil filtration device of the single-unit combustion test equipment for building materials according to claim 1, characterized in that: The disc-shaped steel wire ball (7) is made of multiple layers of stainless steel wire mesh.

7. The oil filtering device of the building material monomer combustion test equipment according to claim 1, characterized in that: The connecting screws (4), nuts (5) and washers are stainless steel standard parts, and the specifications of the connecting screws (4) are adapted to the first connecting hole of the fixed grid frame (3) and the second connecting hole of the movable grid frame (6).

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