Waste gas treatment device for foam board production

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a waste gas treatment device for foam board production, which comprises a pretreatment unit, a gas suction unit is arranged on the surface of the pretreatment unit, and an adsorption unit is arranged on the surface of the gas suction unit. The waste gas treatment device for foam board production has the remarkable effects of efficient purification and convenient maintenance, dust can be efficiently intercepted and automatically cleaned through the dust removal design of four groups of filter bags and a stirring frame in the pretreatment unit, and blockage is avoided; the four activated carbon storage frames in the adsorption unit enlarge the contact area, deep adsorption of volatile organic compounds is achieved, the air suction unit stably conveys airflow, waste gas treatment continuity is ensured, the modular structure enables all the units to be connected and disassembled conveniently, filter bag overhaul and activated carbon replacement are simple and easy to implement, the maintenance cost is reduced, and the service life is prolonged. Meanwhile, the compact layout saves space, and an efficient and economical solution is provided for waste gas treatment in foam board production.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a waste gas treatment device for foam board production. Background Technology

[0002] In modern industry, foamed boards are widely used in packaging, building insulation, and automotive interiors due to their lightweight, heat insulation, and excellent cushioning properties. However, the production process of foamed boards involves heating raw materials and foaming, which inevitably generates a large amount of complex waste gas. This waste gas not only contains volatile organic compounds (VOCs) such as benzene series compounds and aldehydes produced by the thermal decomposition of raw materials such as polystyrene and polyurethane, but also carries solid pollutants such as raw material dust and unreacted additive particles. The emission of waste gas from the production of foamed boards without effective treatment will cause the concentration of VOCs in the surrounding atmosphere to exceed the standard, significantly increase the content of inhalable particulate matter, seriously damage the regional air quality, and exacerbate environmental problems such as smog. At the same time, VOCs and nitrogen oxides undergo photochemical reactions under sunlight, which can also form ozone pollution, causing irreversible damage to the human respiratory tract and nervous system.

[0003] Currently, there are many drawbacks in the waste gas treatment equipment on the market. Conventional devices only use a single filter cotton or electrostatic dust removal method to treat waste gas. Although they can intercept some dust, they have almost no effect on removing VOCs. Although some devices are equipped with activated carbon adsorption units, the adsorption efficiency will rapidly decline due to insufficient activated carbon filling and untimely replacement.

[0004] Therefore, we propose a waste gas treatment device for foamed board production to solve the problems mentioned above. Utility Model Content

[0005] This utility model provides a waste gas treatment device for foamed board production, which can solve the problems in the prior art where some devices only use a single filter cotton or electrostatic dust removal method to treat waste gas. Although they can intercept some dust, they have almost no effect on removing VOCs. Some devices are equipped with activated carbon adsorption units, but due to insufficient activated carbon filling and untimely replacement, the adsorption efficiency rapidly declines.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A waste gas treatment device for foamed board production includes a pretreatment unit, wherein a suction unit is disposed on the surface of the pretreatment unit, and an adsorption unit is disposed on the surface of the suction unit.

[0008] The pretreatment unit includes an outer shell, an air inlet pipe fixedly connected to the surface of the outer shell, a dust collection frame slidably connected to the inner wall of the outer shell, a first motor fixedly mounted on the surface of the outer shell, a stirring rack fixedly connected to the output end of the first motor, a mounting frame fixedly connected to the inner wall of the outer shell, and a filter bag provided on the inner wall of the mounting frame.

[0009] Preferably, the suction unit includes a housing three, a second motor is fixedly mounted on the surface of the housing three, a fan is provided at the output end of the second motor, a connecting pipe one is fixedly connected to the surface of the housing three, and a connecting pipe two is also fixedly connected to the surface of the housing three.

[0010] Preferably, the end of the connecting pipe away from the outer casing is fixedly connected to the outer casing.

[0011] Preferably, the filter bags are provided in four groups, and the four groups of filter bags are arranged linearly along the surface of the mounting frame.

[0012] Preferably, a support frame is mounted on the surface of the outer casing, a support frame is fixedly connected to the inner wall of the outer casing, and the top of the support frame is fixedly connected to the mounting bracket.

[0013] Preferably, the output end of the first motor passes through the outer casing and is fixedly connected to the stirring rack.

[0014] Preferably, the adsorption unit includes a second outer shell, a support block is fixedly connected to the surface of the second outer shell, a shelf is movably connected to the surface of the support block, a storage frame is fixedly connected to the surface of the shelf, activated carbon is slidably connected to the inner wall of the storage frame, and an air outlet pipe is fixedly connected to the surface of the second outer shell.

[0015] Preferably, four storage frames are provided, which are arranged linearly along the surface of the shelf, and the inner walls of the four storage frames are slidably connected with the same activated carbon.

[0016] Preferably, the surface of the second outer shell is fixedly connected to the second connecting pipe, and the surface of the second outer shell has a groove, the inner wall of the groove being slidably connected to the surface of the storage frame.

[0017] Preferably, a second support frame is mounted on the surface of the second outer shell, and the surface of the second support frame is fixedly connected to the first support frame.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0019] This invention boasts several significant advantages. Structurally, it employs a combination of a pretreatment unit, an air intake unit, and an adsorption unit. Compared to a single filtration structure, this achieves multi-stage purification of exhaust gas. The pretreatment unit features four linearly arranged filter bags, significantly increasing the dust filtration area. Combined with a stirring frame driven by a first motor for dust removal, it effectively prevents filter bag clogging, reduces manual cleaning frequency, and maintains long-term stable filtration efficiency. In contrast, some existing devices rely heavily on manual cleaning, which can lead to decreased filtration performance and increased maintenance costs. The air intake unit generates stable suction through a second motor-driven impeller. Compared to traditional fan devices, this results in more uniform airflow, ensuring efficient transfer of exhaust gas to the adsorption unit for adsorption. The unit features four independent activated carbon storage frames, facilitating flexible replacement of adsorption materials. Compared to integrated adsorption structures, this significantly reduces consumable replacement costs and operational complexity. Functionally, this device combines dust filtration and volatile organic compound adsorption, achieving dual purification of particulate and organic pollutants in the waste gas from foamed board production. In contrast, most existing devices only have a single purification function, making it difficult to meet environmental protection requirements. Furthermore, the modular connection design of each unit makes equipment installation and maintenance more convenient. The overall structure is compact and stable. Through the rational layout of the support frame and support blocks, compared to existing complex installation structures, it saves space and enhances equipment reliability. These advantages collectively improve the practicality, economy, and environmental efficiency of the device. Attached Figure Description

[0020] Figure 1 This is a front view of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the rear of the overall structure of this utility model;

[0022] Figure 3 This is an exploded view of the overall structure of this utility model;

[0023] Figure 4 This is a schematic diagram showing the disassembled structure of the preprocessing unit of this utility model.

[0024] The components are as follows: 10. Pretreatment unit; 1001. Outer shell 1; 1002. Air inlet pipe; 1003. Support frame 1; 1004. Dust collection frame; 1005. First motor; 1006. Stirring rack; 1007. Mounting frame; 1008. Filter bag; 1009. Support frame; 20. Adsorption unit; 2001. Outer shell 2; 2002. Support block; 2003. Shelf; 2004. Shelf; 2005. Activated carbon; 2006. Air outlet pipe; 2007. Support frame 2; 2008. Grooving; 30. Suction unit; 3001. Outer shell 3; 3002. Second motor; 3003. Connecting pipe 1; 3004. Connecting pipe 2; 3005. Fan wheel. Detailed Implementation

[0025] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0026] Example 1:

[0027] Please see Figure 1-4 This utility model provides a technical solution:

[0028] A waste gas treatment device for foamed board production includes a pretreatment unit 10, a suction unit 30 is provided on the surface of the pretreatment unit 10, and an adsorption unit 20 is provided on the surface of the suction unit 30.

[0029] The pretreatment unit 10 includes a housing 1001, an air inlet pipe 1002 fixedly connected to the surface of the housing 1001, a dust collection frame 1004 slidably connected to the inner wall of the housing 1001, a first motor 1005 fixedly mounted on the surface of the housing 1001, a stirring rack 1006 fixedly connected to the output end of the first motor 1005, a mounting frame 1007 fixedly connected to the inner wall of the housing 1001, and a filter bag 1008 provided on the inner wall of the mounting frame 1007.

[0030] Through the above technical solution, the air inlet pipe 1002 is fixed to the surface of the outer shell 1001, serving as the inlet for exhaust gas, introducing exhaust gas containing dust particles and other pollutants generated during the foaming board production process into the pretreatment unit 10; the dust collection frame 1004, slidably connected to the inner wall of the outer shell 1001, is used to collect the dust that falls after being filtered by the filter bag 1008. When the dust accumulates to a certain level, the dust collection frame 1004 can be removed for cleaning by sliding, which is convenient, quick, and avoids frequent manual contact with pollutants; the first motor 1005 is fixed to the surface of the outer shell 1001, and its output end passes through the outer shell 1001 and is connected to the stirring rack 1006. After starting, the first motor 1005... 5 drives the stirring frame 1006 to rotate, periodically striking the filter bag 1008, causing the dust adhering to the surface of the filter bag 1008 to fall off due to vibration, preventing the filter bag 1008 from clogging and maintaining its high-efficiency filtration performance; the mounting frame 1007 is fixed to the inner wall of the outer shell 1001, and the four sets of filter bags 1008 fixedly connected to its inner wall are arranged linearly along the surface of the mounting frame 1007, which greatly expands the filtration area and can fully intercept dust particles in the exhaust gas, achieving preliminary purification of the exhaust gas and providing a good foundation for subsequent treatment; while the suction unit 30 fixedly connected to the surface of the pretreatment unit 10 can extract the pre-filtered exhaust gas from the outer shell 1001 through subsequent structures for further deep treatment.

[0031] The intake unit 30 includes a housing 3001, a second motor 3002 is fixedly mounted on the surface of the housing 3001, a fan 3005 is provided at the output end of the second motor 3002, a connecting pipe 3003 is fixedly connected to the surface of the housing 3001, and a connecting pipe 3004 is also fixedly connected to the surface of the housing 3001.

[0032] Through the above technical solution, the outer casing 3001 serves as the main body of the suction unit 30. After the second motor 3002 fixed on its surface is started, it drives the impeller 3005 connected to the output end to rotate, generating suction. The exhaust gas that has been preliminarily filtered in the pretreatment unit 10 is drawn into the outer casing 3001 through the first connecting pipe 3003, and then transported to the adsorption unit 20 for further treatment through the second connecting pipe 3004.

[0033] The end of connecting pipe 3003 away from outer casing 3001 is fixedly connected to outer casing 1001.

[0034] Through the above technical solution, the end of the connecting pipe 3003 away from the outer shell 3001 is fixedly connected to the outer shell 1001, so that the suction unit 30 and the pretreatment unit 10 are connected. When the second motor 3002 drives the impeller 3005 in the suction unit 30 to generate suction, the exhaust gas in the pretreatment unit 10 after preliminary filtration by the filter bag 1008 can be smoothly sucked into the outer shell 3001 through the connecting pipe 3003, ensuring the continuity and smoothness of the exhaust gas treatment process.

[0035] There are four sets of filter bags 1008, and the four sets of filter bags 1008 are arranged linearly along the surface of the mounting frame 1007.

[0036] Through the above technical solution, the four sets of filter bags 1008 are arranged linearly along the surface of the mounting frame 1007, which greatly increases the contact area between the exhaust gas and the filter bags 1008, can efficiently intercept dust particles in the exhaust gas, improve the filtration efficiency of the pretreatment unit 10 for exhaust gas, reduce the burden on the subsequent adsorption unit, and ensure the purification effect of the entire exhaust gas treatment device.

[0037] A support frame 1003 is mounted on the surface of the outer casing 1001, and a support frame 1009 is fixedly connected to the inner wall of the outer casing 1001. The top of the support frame 1009 is fixedly connected to the mounting bracket 1007.

[0038] Through the above technical solution, the support frame 1003 is fixed to the surface of the outer shell 1001, providing stable support for the pretreatment unit 10 and ensuring the overall structure of the device is stable; the support frame 1009 is fixed to the inner wall of the outer shell 1001, and its top is fixedly connected to the mounting frame 1007, which enhances the stability of the mounting frame 1007, thereby ensuring the reliable fixing of the four sets of filter bags 1008, so that the filter bags 1008 remain stable during the dust interception process, effectively improving the filtration efficiency and the service life of the device.

[0039] The output end of the first motor 1005 passes through the outer casing 1001 and is fixedly connected to the stirring rack 1006.

[0040] Through the above technical solution, the output end of the first motor 1005 passes through the outer shell 1001 and is fixedly connected to the stirring rack 1006, so that the first motor 1005 can drive the stirring rack 1006 to rotate inside the outer shell 1001, and knock off the dust on the surface of the filter bag 1008 by hitting it, effectively preventing the filter bag 1008 from clogging and ensuring the continuous and efficient operation of the pretreatment unit 10.

[0041] Example 2:

[0042] Please see Figure 1-4 Furthermore, in conjunction with Embodiment 1, the adsorption unit 20 includes a second outer shell 2001, a support block 2002 fixedly connected to the surface of the second outer shell 2001, a shelf 2003 movably connected to the surface of the support block 2002, a shelf frame 2004 fixedly connected to the surface of the shelf 2003, activated carbon 2005 slidably connected to the inner wall of the shelf frame 2004, and an exhaust pipe 2006 fixedly connected to the surface of the second outer shell 2001.

[0043] Through the above technical solution, the outer shell 2001 serves as the main body of the adsorption unit 20, and the support block 2002 fixed on its surface provides support for the movable shelf 2003. The inner wall of the shelf frame 2004 fixed on the surface of the shelf 2003 is slidably connected to the activated carbon 2005, so that the activated carbon 2005 can be flexibly replaced. The exhaust pipe 2006 is fixed on the surface of the outer shell 2001 and serves as the exhaust channel for the purified gas, ensuring that the clean waste gas after adsorption treatment by the activated carbon 2005 is smoothly discharged from the device.

[0044] There are four storage frames 2004, which are arranged linearly along the surface of the shelf 2003. The inner walls of the four storage frames 2004 are slidably connected with the same activated carbon 2005.

[0045] Through the above technical solution, the four storage frames 2004 arranged linearly along the surface of the shelf 2003 increase the contact area between the activated carbon 2005 and the waste gas, allowing the waste gas to come into more full contact with the activated carbon 2005 and improving the adsorption effect on volatile organic compounds in the waste gas. At the same time, the same activated carbon 2005 is slidably connected to the inner wall of each storage frame 2004, which facilitates the quick and convenient replacement of the activated carbon 2005 when it is saturated with adsorption, ensuring the continuous and efficient operation of the adsorption unit 20.

[0046] The surface of the outer shell 2001 is fixedly connected to the connecting pipe 2004. The surface of the outer shell 2001 is provided with a groove 2008, and the inner wall of the groove 2008 is slidably connected to the surface of the storage frame 2004.

[0047] Through the above technical solution, the surface of the second outer shell 2001 is fixedly connected to the second connecting pipe 3004, so that the exhaust gas transported by the suction unit 30 can smoothly enter the adsorption unit 20; the slot 2008 opened on the surface of the second outer shell 2001 has its inner wall slidably connected to the surface of the storage frame 2004, providing an installation path for the storage frame 2004, so that the storage frame 2004 can flexibly slide into or out of the second outer shell 2001 through the slot 2008, which facilitates the replacement and maintenance of the activated carbon 2005.

[0048] The surface of the outer casing 2001 is fitted with a support frame 2007, and the surface of the support frame 2007 is fixedly connected to the support frame 1003.

[0049] Through the above technical solution, the second support frame 2007, which is fixedly connected to the surface of the second outer shell 2001, and the first support frame 1003, firmly connects the adsorption unit 20 and the pretreatment unit 10, thereby enhancing the structural stability of the entire waste gas treatment device, ensuring that each unit remains in a fixed position during operation, and avoiding the impact of vibration and other factors on the waste gas treatment effect and equipment service life.

[0050] Working principle: During the foaming board production process, the exhaust gas enters the outer shell 1001 of the pretreatment unit 10 through the inlet pipe 1002. Four sets of filter bags 1008, arranged linearly along the surface of the mounting frame 1007, perform preliminary filtration of the exhaust gas, intercepting dust particles. The filtered dust falls into the dust collection frame 1004, which is slidably connected to the inner wall of the outer shell 1001. After the first motor 1005 starts, its output end passes through the outer shell 1001 and drives the stirring frame 1006 to rotate, periodically striking the filter bags 1008, causing the dust adhering to the surface of the filter bags 1008 to fall off, maintaining the filtration efficiency of the filter bags 1008. The support frame 1003 ensures the stable support of the outer shell 1001. The pre-filtered exhaust gas passes through the connecting pipe 3003. The exhaust gas enters the outer shell 3001 of the suction unit 30. The second motor 3002 fixed on the surface of the outer shell 3001 starts, driving the fan 3005 connected to the output end to rotate and generate suction, which transports the exhaust gas through the connecting pipe 3004 to the outer shell 2001 of the adsorption unit 20. The support block 2002 fixed on the surface of the outer shell 2001 supports the movable shelf 2003. The activated carbon 2005 is slidably connected in the four linearly arranged shelves 2004 on the surface of the shelf 2003 to adsorb the volatile organic compounds in the exhaust gas. Finally, the purified gas is discharged through the exhaust pipe 2006 fixed on the surface of the outer shell 2001. The outer shell 2001 is fixedly connected to the support frame 1003 to ensure the stability of the entire device.

[0051] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A waste gas treatment device for foamed board production, comprising a pretreatment unit (10), characterized in that: The surface of the pretreatment unit (10) is provided with an air suction unit (30), and the surface of the air suction unit (30) is provided with an adsorption unit (20); The pretreatment unit (10) includes a first outer shell (1001), an air inlet pipe (1002) is fixedly connected to the surface of the first outer shell (1001), a dust collection frame (1004) is slidably connected to the inner wall of the first outer shell (1001), a first motor (1005) is fixedly installed on the surface of the first outer shell (1001), a stirring rack (1006) is fixedly connected to the output end of the first motor (1005), an installation frame (1007) is fixedly connected to the inner wall of the first outer shell (1001), and a filter bag (1008) is provided on the inner wall of the installation frame (1007).

2. The waste gas treatment device for foamed board production according to claim 1, characterized in that: The air intake unit (30) includes a third outer shell (3001), a second motor (3002) is fixedly mounted on the surface of the third outer shell (3001), a fan wheel (3005) is provided at the output end of the second motor (3002), a connecting pipe (3003) is fixedly connected to the surface of the third outer shell (3001), and a connecting pipe (3004) is also fixedly connected to the surface of the third outer shell (3001).

3. The waste gas treatment device for foamed board production according to claim 2, characterized in that: The end of the connecting pipe 1 (3003) away from the outer shell 3 (3001) is fixedly connected to the outer shell 1 (1001).

4. The waste gas treatment device for foamed board production according to claim 1, characterized in that: The filter bags (1008) are provided in four groups, and the four groups of filter bags (1008) are arranged linearly along the surface of the mounting frame (1007).

5. The waste gas treatment device for foamed board production according to claim 1, characterized in that: A support frame (1003) is mounted on the surface of the outer shell (1001), and a support frame (1009) is fixedly connected to the inner wall of the outer shell (1001). The top of the support frame (1009) is fixedly connected to the mounting bracket (1007).

6. The waste gas treatment device for foamed board production according to claim 1, characterized in that: The output end of the first motor (1005) is fixedly connected to the stirring rack (1006) through the outer casing (1001).

7. The waste gas treatment device for foamed board production according to claim 1, characterized in that: The adsorption unit (20) includes a second outer shell (2001), a support block (2002) is fixedly connected to the surface of the second outer shell (2001), a shelf (2003) is movably connected to the surface of the support block (2002), a shelf frame (2004) is fixedly connected to the surface of the shelf frame (2003), activated carbon (2005) is slidably connected to the inner wall of the shelf frame (2004), and an exhaust pipe (2006) is fixedly connected to the surface of the second outer shell (2001).

8. The waste gas treatment device for foamed board production according to claim 7, characterized in that: Four storage frames (2004) are provided, and the four storage frames (2004) are arranged linearly along the surface of the shelf (2003). The inner walls of the four storage frames (2004) are slidably connected with the same activated carbon (2005).

9. The waste gas treatment device for foamed board production according to claim 7, characterized in that: The surface of the second outer shell (2001) is fixedly connected to the second connecting pipe (3004). A groove (2008) is provided on the surface of the second outer shell (2001), and the inner wall of the groove (2008) is slidably connected to the surface of the storage frame (2004).

10. The waste gas treatment device for foamed board production according to claim 7, characterized in that: The surface of the second outer shell (2001) is equipped with a second support frame (2007), and the surface of the second support frame (2007) is fixedly connected to the first support frame (1003).

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