Spraying and filtering system for perchloric acid fume hood

Abstract

The utility model provides a spraying and filtering system for a perchloric acid fume hood, which relates to the technical field of fume hood filtering and comprises a filtering hood body and a cleaning component, the cleaning assembly comprises top plate access covers fixedly connected to the two sides of the top end of the filtering cabinet body, filtering ball access openings are formed in the top plate access covers, spraying pipes are fixedly connected to the interior of the filtering cabinet body, and atomizing nozzles are fixedly connected to the bottom ends of the spraying pipes; the water inlet and outlet assembly comprises a water feeding pipe fixedly connected to one side of the bottom end of the filtering cabinet body, and the end, away from the water feeding pipe, of the filtering cabinet body is fixedly connected with a water falling pipe; by means of the design, liquid is evenly distributed to all the nozzles, the contact area of the liquid and gas is enlarged in an atomization mode, perchloric acid gas can be fully washed, meanwhile, filtered gas is discharged through the top exhaust outlet, sprayed liquid is discharged through the downpipe, and gas-liquid circulation is formed. And the problem of incomplete spraying coverage caused by non-uniform liquid distribution is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of fume hood filtration technology, and in particular to a spray filtration system for perchloric acid fume hoods. Background Technology

[0002] A perchloric acid fume hood is a safety protection device specifically designed for handling experimental scenarios containing perchloric acid gas. It is used in laboratories or industrial settings to prevent perchloric acid gas leakage and purify harmful gases through mechanisms such as physical isolation, forced ventilation, and gas purification.

[0003] After the liquid enters the filter cabinet, uneven distribution often leads to incomplete spray coverage, with some areas receiving dense spray while others receive sparse or even absent spray. This results in perchloric acid gas not being adequately washed, reducing the filtration effect and making it difficult to effectively remove harmful impurities from the gas, thus failing to guarantee the health of operators and the safety of the environment.

[0004] Therefore, this utility model provides a spray filtration system for perchloric acid fume hoods. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a spray filtration system for perchloric acid fume hoods.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a spray filtration system for a perchloric acid fume hood, comprising a filter cabinet and a cleaning component;

[0007] The cleaning assembly includes a top plate inspection cover fixedly connected to both sides of the top of the filter cabinet. The top plate inspection cover has a filter ball inspection port inside. A spray pipe is fixedly connected inside the filter cabinet. An atomizing nozzle is fixedly connected to the bottom end of the spray pipe.

[0008] The water inlet and outlet assembly includes a water inlet pipe fixedly connected to one side of the bottom of the filter cabinet, a drain pipe fixedly connected to the end of the filter cabinet away from the water inlet pipe, the top end of the water inlet pipe fixedly connected to a spray pipe, and the end of the spray pipe away from the water inlet pipe fixedly connected to the drain pipe.

[0009] In a preferred embodiment, the top inspection cover is symmetrically arranged on the left and right sides of the top of the filter cabinet.

[0010] In a preferred embodiment, the top of the filter cabinet is provided with a top exhaust vent.

[0011] In a preferred embodiment, the spray pipe is horizontally positioned above the interior of the filter cabinet.

[0012] In a preferred embodiment, the atomizing nozzles are evenly distributed at the bottom end of the spray pipe.

[0013] In a preferred embodiment, the water inlet pipe and the drain pipe are respectively located on the left and right sides of the bottom of the filter cabinet.

[0014] In a preferred embodiment, the top exhaust vent is located in the middle area of ​​the top of the filter cabinet.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] This invention utilizes a water inlet pipe to drive the spray pipes. Liquid enters the filter cabinet from the outside through the water inlet pipe, flows within the spray pipes, and is atomized by evenly spaced atomizing nozzles. During this process, the liquid flows due to pressure difference, and the atomizing nozzles physically disperse the liquid into fine water mist particles, allowing for physical contact with the gas. This design achieves uniform liquid distribution to each nozzle, expanding the contact area with the gas through atomization, ensuring thorough washing of perchloric acid gas. Simultaneously, the filtered gas is discharged through the top exhaust vent, while the sprayed liquid is discharged through the drain pipe, forming a gas-liquid cycle. This effectively solves the problem of uneven liquid distribution leading to incomplete spray coverage. Attached Figure Description

[0017] Figure 1 A perspective view of a spray filtration system for a perchloric acid fume hood provided by this utility model;

[0018] Figure 2 A top view of a spray filtration system for a perchloric acid fume hood provided by this utility model;

[0019] Figure 3 This utility model provides a schematic diagram of the cleaning component structure of a spray filtration system for a perchloric acid fume hood.

[0020] Legend:

[0021] 1. Filter cabinet;

[0022] 2. Cleaning components; 21. Top panel access cover; 22. Filter ball access port; 23. Spray pipe; 24. Atomizing nozzle;

[0023] 3. Water inlet and outlet components; 31. Water inlet pipe; 32. Drain pipe;

[0024] 4. Top exhaust vent. Detailed Implementation

[0025] 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.

[0026] like Figure 1 - Figure 3 As shown, this embodiment provides a technical solution: a spray filtration system for a perchloric acid fume hood, including a filter cabinet 1, a top exhaust port 4 at the top of the filter cabinet 1, the top exhaust port 4 being located in the middle area of ​​the top of the filter cabinet 1, and also including a cleaning component 2.

[0027] The cleaning assembly 2 includes a top plate access cover 21 fixedly connected to both sides of the top of the filter cabinet 1. The top plate access cover 21 is symmetrically arranged on the left and right sides of the top of the filter cabinet 1. The top plate access cover 21 has a filter ball access port 22 inside. A spray pipe 23 is fixedly connected inside the filter cabinet 1. Atomizing nozzles 24 are fixedly connected to the bottom end of the spray pipe 23. The spray pipe 23 is horizontally arranged inside the filter cabinet 1. The atomizing nozzles 24 are evenly distributed at the bottom end of the spray pipe 23.

[0028] The filter cabinet 1 serves as the main frame of the entire spray filtration system, used to house and fix the internal cleaning components 2, water inlet and outlet components 3, etc., providing a relatively closed space environment for the filtration and treatment of perchloric acid gas. At the same time, it facilitates the smooth progress of subsequent filtration processes. The top of the filter cabinet 1 is equipped with a top exhaust vent 4 to facilitate the discharge of the treated gas and achieve ventilation. The top exhaust vent 4 is used to discharge the filtered gas from the filter cabinet 1, ensuring that the gas inside the fume hood can circulate, preventing excessive internal pressure, maintaining the pressure balance inside the fume hood, and avoiding gas leakage or equipment damage due to pressure issues.

[0029] The top inspection cover 21 is fixedly connected to both sides of the top of the filter cabinet 1. The filter ball inspection port 22 inside facilitates the operator's inspection, replacement, and maintenance of the filter balls and other internal filter elements, ensuring the normal operation and filtration effect of the filtration system. Symmetrically arranged on the left and right sides of the top of the filter cabinet 1, it makes maintenance operations more convenient and faster, improves equipment maintainability, reduces equipment downtime due to filter element damage or blockage, and extends the equipment's service life. The filter ball inspection port 22 provides a convenient passage for operators to enter the filter cabinet 1 to inspect and operate the filter balls, making filter ball maintenance more convenient without disassembling the entire filter unit. The complex components save maintenance time and labor costs, improve equipment maintenance efficiency, and ensure the filtration quality of the filtration system. The spray pipe 23 is horizontally set inside the upper part of the filter cabinet 1 as a pipeline for conveying spray liquid. It evenly distributes the liquid to each atomizing nozzle 24, ensuring that the spray liquid can cover the entire filtration area and effectively spray and wash the perchloric acid gas to remove harmful substances. The atomizing nozzle 24 is fixedly connected to the bottom end of the spray pipe 23 and sprays the spray liquid in the form of atomization, so that the liquid and perchloric acid gas can fully contact each other, increase the contact area between the liquid and the gas, improve the spray washing effect, and effectively remove impurities and harmful components in the gas.

[0030] like Figure 1 and Figure 3 As shown, the water inlet and outlet assembly 3 includes a water inlet pipe 31 fixedly connected to one side of the bottom of the filter cabinet 1, a drain pipe 32 fixedly connected to the end of the filter cabinet 1 away from the water inlet pipe 31, the top end of the water inlet pipe 31 fixedly connected to the spray pipe 23, and the end of the spray pipe 23 away from the water inlet pipe 31 fixedly connected to the drain pipe 32. The water inlet pipe 31 and the drain pipe 32 are respectively arranged on the left and right sides of the bottom of the filter cabinet 1.

[0031] The water inlet pipe 31 is fixedly connected to one side of the bottom of the filter cabinet 1, introducing the external spray liquid into the filter cabinet 1 to provide a water source for the spraying process. Its top end is fixedly connected to the spray pipe 23 to ensure that the liquid can be smoothly delivered to the spray pipe 23 for spraying. The drain pipe 32 is fixedly connected to the end of the filter cabinet 1 away from the water inlet pipe 31. The sprayed liquid is discharged from the filter cabinet 1 through the drain pipe 32, realizing the recycling or discharge treatment of the liquid, avoiding the accumulation of liquid inside the filter cabinet 1, and maintaining the normal operation of the system. The water inlet pipe and the drain pipe 31 are respectively set on the left and right sides of the bottom of the filter cabinet 1, forming a complete liquid circulation path, which facilitates the collection and treatment of the sprayed liquid, avoids the formation of stagnant water inside the filter cabinet 1, prevents bacterial growth and equipment corrosion, and also facilitates the recycling of liquid, reduces water waste, and improves the economy and environmental protection of the system.

[0032] Working principle:

[0033] like Figure 1 - Figure 3 As shown:

[0034] In use: First, the external spray liquid enters the filter cabinet 1 through the water inlet pipe 31. The water inlet pipe 31 is fixedly connected to one side of the bottom of the filter cabinet 1, and its top end is connected to the spray pipe 23, which is horizontally set inside the filter cabinet 1. The liquid flows in the spray pipe 23 and is evenly distributed to the atomizing nozzles 24, which are evenly spaced at the bottom of the spray pipe 23. The atomizing nozzles 24 spray the spray liquid in an atomized form, forming a large number of fine water mist particles. These particles come into full contact with the perchloric acid gas in the fume hood, increasing the contact area between the liquid and the gas. This effectively sprays and washes the perchloric acid gas, removing impurities from the gas. The gas is initially purified by removing harmful components. At this time, the filtered gas rises in the fume hood, and the top exhaust vent 4 in the middle area of ​​the top of the filter cabinet 1 opens to discharge the purified gas from the filter cabinet 1, thereby realizing the ventilation function, ensuring the circulation of gas in the fume hood, maintaining the internal pressure balance, and avoiding gas leakage or equipment damage. At the same time, the sprayed liquid flows downward under the action of gravity and is finally discharged from the filter cabinet 1 through the drain pipe 32 fixedly connected to the bottom of the filter cabinet 1 away from the water inlet pipe 31. This realizes the recycling or discharge treatment of liquid and avoids the accumulation of liquid inside the filter cabinet 1.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A spray filtration system for a perchloric acid fume hood, comprising a filter cabinet (1), characterized in that, It also includes cleaning components (2); The cleaning component (2) includes a top plate inspection cover (21) fixedly connected to both sides of the top of the filter cabinet (1). The top plate inspection cover (21) is provided with a filter ball inspection port (22). The filter cabinet (1) is fixedly connected with a spray pipe (23). The bottom end of the spray pipe (23) is fixedly connected with an atomizing nozzle (24). The water inlet and outlet assembly (3) includes a water inlet pipe (31) fixedly connected to one side of the bottom of the filter cabinet (1). A drain pipe (32) is fixedly connected to one end of the filter cabinet (1) away from the water inlet pipe (31). The top end of the water inlet pipe (31) is fixedly connected to the spray pipe (23). The end of the spray pipe (23) away from the water inlet pipe (31) is fixedly connected to the drain pipe (32).

2. The spray filtration system for a perchloric acid fume hood according to claim 1, characterized in that, The top plate inspection cover (21) is symmetrically arranged on the left and right sides of the top of the filter cabinet (1).

3. The spray filtration system for a perchloric acid fume hood according to claim 1, characterized in that, The top of the filter cabinet (1) is provided with a top exhaust vent (4).

4. The spray filtration system for a perchloric acid fume hood according to claim 1, characterized in that, The spray pipe (23) is horizontally positioned above the interior of the filter cabinet (1).

5. A spray filtration system for a perchloric acid fume hood according to claim 1, characterized in that, The atomizing nozzles (24) are evenly distributed at the bottom of the spray pipe (23).

6. The spray filtration system for a perchloric acid fume hood according to claim 1, characterized in that, The water inlet pipe (31) and the water outlet pipe (32) are respectively installed on the left and right sides of the bottom of the filter cabinet (1).

7. A spray filtration system for a perchloric acid fume hood according to claim 3, characterized in that, The top exhaust vent (4) is located in the middle area at the top of the filter cabinet (1).

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