Purification device for chemical tail gas component analysis

Abstract

The utility model belongs to the technical field of tail gas purification, and particularly relates to a purification device for chemical tail gas component analysis, which comprises a purification cabinet body, a cabinet door is hinged on the front surface of the purification cabinet body, a gas inlet is fixedly connected above the purification cabinet body, and a gas outlet is fixedly connected on the side surface of the purification cabinet body. A tail gas purification mechanism is arranged in the purification cabinet body and comprises a filtering unit and an adsorption unit; the filter unit comprises mounting seats, supporting pieces, a filter screen plate I and a filter screen plate II, and the mounting seats are fixedly connected to the two sides of the inner wall of the purification cabinet body in pairs respectively. According to the purification device for chemical tail gas component analysis, the two groups of adsorption units are connected in series, so that the tail gas is equivalently adsorbed twice, the contact time of the tail gas and the activated carbon is prolonged, the adsorption area is increased, gaseous pollutants with complex components are removed, and the purified tail gas is ensured to reach a higher environmental protection standard.

Description

A purification device for analyzing the components of chemical exhaust gas Technical Field

[0001] This utility model relates to the field of exhaust gas purification technology, specifically a purification device for analyzing the components of chemical exhaust gas. Background Technology

[0002] Chemical exhaust gases often contain odorous gases that are harmful to the human body, including small molecules such as formaldehyde, benzene, ammonia, acetaldehyde, methanethiol, carbon monoxide, sulfur dioxide, and hydrogen sulfide, or other volatile organic compounds, commonly known as foul odors. If these foul odors are released into the atmosphere without any treatment, they will have a detrimental impact on the surrounding environment.

[0003] Currently, most existing chemical exhaust gas purification devices have relatively simple structures and limited purification effects, making it difficult to meet the requirements for high-precision component analysis of chemical exhaust gases. Some purification devices only remove impurities through a single filtration method, which cannot effectively remove multiple harmful components in the exhaust gas.

[0004] Therefore, we urgently need a purification device for analyzing the components of chemical exhaust gas to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a purification device for analyzing the components of chemical exhaust gas, so as to solve the problem that some purification devices mentioned in the background art can only remove impurities through a single filtration method and cannot effectively remove multiple harmful components in the exhaust gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a purification device for chemical exhaust gas composition analysis, comprising a purification cabinet, a cabinet door hinged to the front of the purification cabinet, an air inlet fixedly connected to the top of the purification cabinet, an air outlet fixedly connected to the side of the purification cabinet, and an exhaust gas purification mechanism provided inside the purification cabinet, the exhaust gas purification mechanism comprising a filtration unit and an adsorption unit.

[0007] The filtration unit includes a mounting base, a support, a first filter plate, and a second filter plate. The mounting bases are fixedly connected in pairs to both sides of the inner wall of the purification cabinet. The first filter plate and the second filter plate are connected to the upper surface of the mounting base through the support. The first filter plate and the second filter plate are placed at a certain angle. The lower part of the first filter plate and the second filter plate are provided with dust outlets in the cabinet.

[0008] Preferably, there are two sets of filter units, respectively arranged inside the purification cabinet, one above the other. The filter mesh second, located below, has smaller pores than the filter mesh first, located above. The filter mesh first serves as primary filtration, with a pore size in the range of 0.5–1 mm, while the filter mesh second serves as secondary filtration, with a pore size in the range of 0.05–0.5 mm. A dust collection assembly is provided on the outside of the dust outlet. The two sets of filter units with different pore sizes form a multi-stage filtration system. The filter mesh first, with its larger pores, first filters out larger particulate impurities, while the filter mesh second, with its smaller pores, further intercepts smaller particles, improving the filtration effect and enabling more thorough removal of solid impurities from the exhaust gas.

[0009] Preferably, the adsorption unit comprises a sliding seat, an adsorption box, a connecting seat, a snap-fit ​​component, a through hole, a snap-fit ​​hole, and a ventilation plate. The adsorption box is installed inside the purification cabinet via the sliding seat. Two sliding seats are fixedly connected in pairs to both sides of the inside of the purification cabinet. The connecting seat is fixedly connected to the upper surface of the adsorption box. The adsorption box is filled with honeycomb activated carbon. The through hole is located on the bottom surface of the adsorption box. The snap-fit ​​component engages with the snap-fit ​​hole for fixation. The snap-fit ​​component is mounted on the connecting seat. The through hole is located on both sides of the ventilation plate. The sliding seat facilitates the installation and disassembly of the adsorption box, making it convenient for maintenance, replacement, or replenishment of activated carbon. The honeycomb activated carbon has a large specific surface area and excellent adsorption performance, effectively adsorbing harmful gases and odors in the exhaust gas, improving the purification quality of the exhaust gas, making the purified exhaust gas cleaner, and reducing environmental pollution.

[0010] Preferably, there are two sets of adsorption units, each installed inside the purification cabinet. Two sets of adsorption units increase the adsorption area and adsorption time, further improving the adsorption effect on harmful gases in the exhaust gas. This is equivalent to performing two adsorption treatments on the exhaust gas, which can more thoroughly remove various pollutants from the exhaust gas, ensuring that the exhaust gas meets higher purification standards, thus helping to reduce the emission of harmful gases and protect the atmospheric environment.

[0011] Preferably, a spray purification structure is provided below the exhaust gas purification mechanism. This spray purification structure includes a transport pipe, a large gear, a small gear, a motor, a liquid storage tank, an observation strip, and an injection port. One end of the transport pipe is connected to a water pump inside the liquid storage tank, and the other end is connected to a rotating water pipe via a sealed bearing. Both ends of the rotating water pipe are rotatably connected to the lower part of the cabinet. The large gear is fixedly connected to the rotating water pipe in the middle, and an atomizing nozzle is provided at the bottom of the rotating water pipe. The small gear meshes with the large gear. The observation strip is located on the outside of the liquid storage tank, and the injection port is located on the upper surface of the liquid storage tank. The spray purification structure atomizes the liquid in the storage tank into tiny droplets through the atomizing nozzle, ensuring full contact with the exhaust gas. Some pollutants in the exhaust gas can be dissolved, absorbed, or chemically reacted by the droplets, thereby further removing harmful substances from the exhaust gas and improving the purification effect. The motor drives the rotating water pipe to rotate via the gear, enabling the atomizing nozzle to spray liquid in all directions, ensuring thorough mixing of the exhaust gas and droplets, and improving the uniformity and thoroughness of the purification.

[0012] Preferably, the dust collection assembly includes a dust collection box, a baffle, a collection port, and a chute. The collection port is located on the right side of the dust collection box, and the dust collection box is fixedly connected to the outside of the dust outlet. The chute is located at the bottom of the dust collection box, and the baffle is slidably connected inside the chute. The dust collection box is used to collect dust discharged from the dust outlet, and the collection port facilitates dust entry into the dust collection box.

[0013] Preferably, the snap-fit ​​component consists of a spring and a movable strip, with the movable strip snapped into the through hole by the spring, facilitating the disassembly of the ventilation plate and the replacement of the honeycomb activated carbon inside the adsorption box.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This purification device for chemical exhaust gas composition analysis has two sets of adsorption units connected in series, which is equivalent to performing two adsorption treatments on the exhaust gas. This extends the contact time between the exhaust gas and activated carbon, increases the adsorption area, removes complex gaseous pollutants, and ensures that the purified exhaust gas meets higher environmental protection standards.

[0016] 2. This purification device for analyzing the composition of chemical exhaust gas features a spray purification structure. A motor-driven gear set rotates a water pipe, causing the atomizing nozzle to rotate 360 ​​degrees and spray liquid to fully mix with the exhaust gas. The liquid can remove water-soluble or liquid-reactive pollutants from the exhaust gas through dissolution, neutralization, and oxidation-reduction reactions, overcoming the limitations of filtration and adsorption units in treating specific pollutants. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the internal structure of the purification cabinet of this utility model;

[0018] Figure 2 is a schematic diagram of the back structure of the purification cabinet of this utility model;

[0019] Figure 3 is a schematic diagram of the side structure of the purification cabinet of this utility model;

[0020] Figure 4 is a schematic diagram of the dust collection structure of this utility model;

[0021] Figure 5 is a schematic diagram of the adsorption structure of this utility model;

[0022] Figure 6 is a schematic diagram of the spray purification structure of this utility model.

[0023] In the diagram: 1. Cleanroom cabinet, 101. Cabinet door, 102. Dust outlet, 2. Air inlet, 3. Spray purification structure, 301. Transport pipe, 302. Large gear, 303. Small gear, 304. Motor, 305. Liquid storage tank, 306. Observation strip, 307. Liquid injection port, 4. Air outlet, 501. Mounting base, 502. Support component, 503. Filter screen plate one, 504. Filter screen plate two, 601. Sliding seat, 602. Adsorption box, 603. Connecting seat, 604. Snap-fit ​​component, 605. Through hole, 606. Snap-fit ​​hole, 607. Ventilation plate, 7. Dust collection box, 701. Baffle, 702. Collection port, 703. Slide groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] Please refer to Figures 1-5. This utility model provides a technical solution: a purification device for chemical exhaust gas composition analysis, including a purification cabinet 1. A cabinet door 101 is hinged to the front of the purification cabinet 1 for inspecting, replacing, or cleaning internal components such as the filter layer and adsorption box. An air inlet 2 is fixedly connected to the top of the purification cabinet 1, and an air outlet 4 is fixedly connected to the side of the purification cabinet 1, forming a reasonable airflow path to ensure that the exhaust gas passes through each purification unit sequentially. An exhaust gas purification mechanism is installed inside the purification cabinet 1, which includes a filter unit.

[0027] The filtration unit includes a mounting base 501, a support member 502, a first filter plate 503, and a second filter plate 504. The mounting bases 501 are fixedly connected in pairs to both sides of the inner wall of the purification cabinet 1. The first filter plate 503 and the second filter plate 504 are connected to the upper surface of the mounting base 501 via the support member 502. Both the first filter plate 503 and the second filter plate 504 are placed at a certain angle, allowing intercepted impurities to slide down the inclined surface to the dust outlet, preventing filter clogging and improving filtration continuity. A dust outlet 102 is provided in the cabinet corresponding to the lower part of the first filter plate 503.

[0028] There are two sets of filter units, located above and below each other inside the purification cabinet 1. The filter mesh 504 located below has smaller pores than the filter mesh 503 located above. Filter mesh 503 serves as the primary filter with a pore size in the range of 0.5-1mm, while filter mesh 504 serves as the secondary filter with a pore size in the range of 0.05-0.5mm. It first filters out large particles and then further intercepts smaller particles. A dust collection assembly is provided on the outside of the dust outlet 102. The dust collection assembly includes a dust collection box 7, a baffle 701, a collection port 702, and a slide 703. The collection port 702 is located on the right side of the dust collection box 7, which is fixedly connected to the outside of the dust outlet 102. The slide 703 is located at the bottom of the dust collection box 7, and the baffle 701 is slidably connected inside the slide 703, allowing the dust collection box to be quickly pulled out to empty the dust.

[0029] Example 2:

[0030] Based on Embodiment 1, the exhaust gas purification mechanism further includes an adsorption unit. The adsorption unit includes a sliding seat 601, an adsorption box 602, a connecting seat 603, a snap-fit ​​component 604, a through hole 605, a snap-fit ​​hole 606, and a ventilation plate 607. The adsorption box 602 is installed inside the purification cabinet 1 via the sliding seat 601. The sliding seats 601 are fixedly connected in pairs to both sides inside the purification cabinet 1. The connecting seat 603 is fixedly connected to the upper surface of the adsorption box 602. The adsorption box 602 is filled with honeycomb activated carbon. Utilizing its high specific surface area and porous structure, it adsorbs volatile organic compounds, odorous gases, and some acidic or alkaline pollutants in the exhaust gas, thereby improving the purification accuracy of the exhaust gas. A through hole 605 is formed inside the bottom surface of the adsorption box 602. A snap-fit ​​component 604 engages with the snap-fit ​​hole 606 for fixation. The snap-fit ​​component 604 is mounted on the connecting seat 603 and consists of a spring and a movable strip. The movable strip is snapped into the through hole 605 by the spring, facilitating the installation and removal of the ventilation plate and enabling regular replacement or replenishment of activated carbon, thus reducing maintenance difficulty. Through holes 605 are also formed on both sides of the ventilation plate 607.

[0031] Below the exhaust gas purification mechanism is a spray purification structure 3, which includes a transport pipe 301, a large gear 302, a small gear 303, a motor 304, a liquid storage tank 305, an observation strip 306, and an injection port 307. One end of the transport pipe 301 is connected to a water pump inside the liquid storage tank 305, and the other end of the transport pipe 301 is connected to a rotating water pipe via a sealed bearing. Both ends of the rotating water pipe are rotatably connected to the lower part of the cabinet. The large gear 302 is fixedly connected to the rotating water pipe in the middle, and an atomizing nozzle is provided at the bottom of the rotating water pipe to atomize the purification liquid in the liquid storage tank into tiny droplets, increasing the contact area with the exhaust gas and removing water-soluble pollutants through dissolution, neutralization, or chemical reaction. The small gear 303 is meshed with the large gear 302, and the observation strip 306 is located on the outside of the liquid storage tank 305. The motor 304 drives the small gear 303 to rotate the large gear 302, causing the rotating water pipe to rotate the atomizing nozzle, ensuring uniform distribution of droplets in the space at the bottom of the cabinet and avoiding purification blind spots. The liquid inlet 307 is located on the upper surface of the liquid storage tank 305. The liquid inlet 307 facilitates the addition of liquid, and the observation bar 306 allows for real-time monitoring of the liquid level to ensure continuous purification capability.

[0032] Working Principle: Chemical exhaust gas enters through the air inlet 2 at the top of the purification cabinet 1. It first passes through the upper filter plate 503, further filtering larger particles. Due to the inclined angle of the filter plate 503, these particles slide down to the dust outlet 102 and then enter the dust collection box 7 for collection. The exhaust gas, after being filtered through the upper layer, continues downwards, passing through the lower filter plate 504. Its smaller pores intercept even finer particles, further improving the filtration effect. The intercepted impurities also enter the dust collection box 7 through the dust outlet 102. The exhaust gas, after double-layer filtration, continues downwards into the adsorption box 602. The honeycomb activated carbon filled in the adsorption box 602 utilizes its high specific surface area and porous structure to adsorb volatile organic compounds, odorous gases, and some acidic or alkaline pollutants in the exhaust gas, thereby purifying the exhaust gas. The purified exhaust gas reaches the bottom of the cabinet. At this time, the motor 304 starts, driving the small gear 303 to rotate the large gear 302. The rotating water pipe fixedly connected in the middle of the large gear 302 rotates accordingly. The atomizing nozzle at the bottom of the rotating water pipe atomizes the purification liquid in the storage tank 305 into tiny droplets, increasing the contact area with the exhaust gas. Water-soluble pollutants in the exhaust gas are removed through dissolution, neutralization or chemical reaction. Finally, the purified exhaust gas is discharged from the side outlet 4.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A purification device for analyzing the components of chemical exhaust gas, comprising a purification cabinet (1), characterized in that: The purification cabinet (1) has a cabinet door (101) hinged to the front. An air inlet (2) is fixedly connected to the top of the purification cabinet (1). An air outlet (4) is fixedly connected to the side of the purification cabinet (1). An exhaust gas purification mechanism is provided inside the purification cabinet (1). The exhaust gas purification mechanism includes a filtration unit and an adsorption unit. The filtration unit includes a mounting base (501), a support (502), a first filter screen (503), and a second filter screen (504). The mounting bases (501) are fixedly connected to the inner walls of the purification cabinet (1) in pairs. The first filter screen (503) and the second filter screen (504) are connected to the upper surface of the mounting base (501) through the support (502). The first filter screen (503) and the second filter screen (504) are placed at a certain angle. The lower part of the first filter screen (503) and the second filter screen (504) is provided with a dust outlet (102) in the cabinet.

2. The purification device for chemical tail gas composition analysis according to claim 1, characterized in that: The filter unit has two sets, which are respectively set inside the purification cabinet (1) at the top and bottom. The filter holes of the lower filter plate two (504) are smaller than those of the upper filter plate one (503). The filter plate one (503) serves as the primary filter with a pore size in the range of 0.5 to 1 mm. The filter plate two (504) serves as the secondary filter with a pore size in the range of 0.05 to 0.5 mm. A dust collection component is provided on the outside of the dust outlet (102).

3. The purification device for chemical tail gas composition analysis according to claim 1, characterized in that: The adsorption unit comprises a sliding seat (601), an adsorption box (602), a connecting seat (603), a snap-fit ​​component (604), a through hole (605), a snap-fit ​​hole (606), and a ventilation plate (607). The adsorption box (602) is installed inside the purification cabinet (1) via the sliding seat (601). The sliding seats (601) are fixedly connected in pairs to both sides inside the purification cabinet (1). The connecting seat (603) is fixedly connected to the upper surface of the adsorption box (602). The adsorption box (602) is filled with honeycomb activated carbon. The through hole (605) is opened on the bottom surface inside the adsorption box (602). The snap-fit ​​component (604) is fixedly engaged with the snap-fit ​​hole (606). The snap-fit ​​component (604) is set on the connecting seat (603). The through hole (605) is opened on both sides of the ventilation plate (607).

4. The purification device for chemical tail gas composition analysis according to claim 3, characterized in that: The adsorption unit consists of two sets, which are respectively installed inside the purification cabinet (1).

5. The purification device for chemical tail gas composition analysis according to claim 1, characterized in that: Below the exhaust gas purification mechanism is a spray purification structure (3). The spray purification structure (3) includes a transport pipe (301), a large gear (302), a small gear (303), a motor (304), a liquid storage tank (305), an observation strip (306), and an injection port (307). One end of the transport pipe (301) is connected to a water pump inside the liquid storage tank (305). The other end of the transport pipe (301) is connected to a rotating water pipe through a sealed bearing. Both ends of the rotating water pipe are rotatably connected to the lower part of the cabinet. The middle part of the large gear (302) is fixedly connected to the rotating water pipe. An atomizing nozzle is provided at the bottom of the rotating water pipe. The small gear (303) is meshed with the large gear (302). The observation strip (306) is opened on the outside of the liquid storage tank (305). The injection port (307) is located on the upper surface of the liquid storage tank (305).

6. The purification device for chemical tail gas composition analysis according to claim 2, characterized in that: The dust collection assembly includes a dust collection box (7), a baffle (701), a collection port (702), and a chute (703). The collection port (702) is located on the right side of the dust collection box (7). The dust collection box (7) is fixedly connected to the outside of the dust outlet (102). The chute (703) is located at the bottom of the dust collection box (7). The baffle (701) is slidably connected inside the chute (703).

7. The purification device for chemical tail gas composition analysis according to claim 3, characterized in that: The snap-fit ​​component (604) consists of a spring and a movable bar, the movable bar being snapped into the through hole (605) by the spring.

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