Multifunctional gas-collecting hood for laboratory
The multifunctional gas collecting hood addresses the issue of condensation and backflow in laboratory fume hoods by incorporating a sealing plate and air inlets with limit strips, enhancing safety and efficiency in gas exhaust.
Patent Information
- Application Number
- CN202420925463.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-29
AI Technical Summary
Existing fume hoods in laboratories are prone to condensation and backflow of waste liquids, leading to secondary pollution when dealing with exhaust gases containing water vapor.
A multifunctional gas collecting hood with a trumpet-shaped outer shell, a sealing plate, and air inlets with limit strips, along with a guide pipe connection to a hose for waste liquid collection, designed to prevent backflow and secondary pollution.
Effectively prevents the backflow of condensed water and waste liquids, ensuring safety by avoiding secondary pollution and facilitating efficient gas exhaust.
Smart Images
Figure CN222198261U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gas collecting hoods, in particular to a multifunctional gas collecting hood for laboratories. Background Art
[0002] A laboratory is a place for conducting experiments. A fume hood is one of the necessary equipment in a laboratory. It is mainly used for experiments with pollution. The fume hood is the most important gas collection equipment of the fume hood. During the experiment, the fume hood needs to continuously inhale air. However, the existing fume hood is an inverted trumpet-shaped hood. Although this type of fume hood has the function of collecting exhaust gas, when encountering exhaust gas containing water vapor, this type of fume hood is prone to cause condensation water or waste liquid to flow back and back, and cause secondary pollution. Therefore, a fume hood that can prevent waste liquid from flowing back is needed. Utility Model Content
[0003] The utility model aims to solve the problems in the background technology and provides a multifunctional gas collecting hood for laboratory use. The gas collecting hood improves the existing gas collecting hood structure and can effectively prevent the condensed water or waste liquid in the exhaust gas from flowing back.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A multifunctional air collecting hood for laboratory use comprises an outer shell and a sealing plate. The outer shell is trumpet-shaped and is provided with an exhaust port. A limit ring is installed on the inner wall at the exhaust port. The sealing plate is installed at an angle at the opening of the outer shell. A flange edge strip extends outward from the outer side of the sealing plate. A plurality of air inlets are processed on the sealing plate. A limit strip extending upwardly toward the outer shell is installed at each air inlet. A guide pipe opening extending into between the outer shell and the sealing plate is installed at the connection between the lower end of the sealing plate and the outer shell.
[0006] The size of the air inlet is smaller than that of the air outlet.
[0007] The flow guide pipe opening is connected with a hose.
[0008] The multifunctional gas collecting hood for laboratory provided by the utility model has the following beneficial effects:
[0009] (1) By setting an inclined sealing plate at the bottom of the shell, processing several air inlets on the sealing plate, and processing limit strips on the air inlets, the limit strips and the inclined sealing plate can be used to prevent condensed water from flowing back into the fume hood;
[0010] (2) By setting up a large exhaust vent, the backflow of exhaust gas or water mist can be prevented, effectively avoiding the safety hazard of secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0012] Figure 1 A schematic structural diagram of an embodiment of the utility model is provided.
[0013] Figure 2 A schematic diagram of the internal structure provided for an embodiment of the utility model.
[0014] Figure numerals: 1. outer shell; 2. sealing plate; 3. exhaust port; 4. limiting ring; 5. flange edge strip; 6. air inlet; 7. limiting strip; 8. guide pipe outlet; 9. hose. DETAILED DESCRIPTION
[0015] Example
[0016] like Figure 1 , Figure 2 As shown, the multifunctional air hood for laboratory use provided by this embodiment includes an outer shell 1 and a sealing plate 2. The outer shell 1 is trumpet-shaped, and an exhaust port 3 is provided on the outer shell 1. A limiting ring 4 is installed on the inner wall at the exhaust port 3. The limiting ring 4 can improve the stability of the connection with the ventilation duct. The sealing plate 2 is installed at an angle at the opening of the outer shell 1. In order to facilitate the fixation of the air hood, a flange edge strip 5 extends outward from the outer side of the sealing plate 2. During installation, the position of the air hood can be fixed by using the flange edge strip 5. A plurality of air inlets 6 are processed on the sealing plate 2. The more air inlets 6 there are, the more balanced the wind speed flowing to the air hood can be. At this time, the sealing plate 2 plays the role of an equalizer, but the cost is relatively high. High, this embodiment adopts a double air inlet 6 design, the size of the air inlet 6 is smaller than that of the exhaust port 3, such a design is adopted to avoid the backflow of exhaust gas or water mist due to insufficient exhaust efficiency after entering the air collecting hood, each air inlet 6 is installed with a limit strip 7 extending toward the upper shell 1, the limit strip 7 can be used to block the condensed condensed water and waste water from flowing out of the air inlet 6, thereby avoiding pollution of the fume hood, the lower end of the sealing plate 2 is connected with the shell 1 The connection between the outer shell 1 is installed with a guide pipe opening 8 extending between the outer shell 1 and the sealing plate 2, and the guide pipe opening 8 is connected with a hose 9. The hose 9 can be used to transfer the waste liquid or condensed water to a designated waste liquid collection bucket for subsequent treatment.
[0017] In order to ensure the corrosion resistance, acid and alkali resistance of the gas collecting hood, the entire gas collecting hood is made of PP material.
[0018] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any modification and replacement based on the technical solution and the utility model concept provided by the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention.
Claims
1. A multifunctional gas collecting hood for laboratory use, characterized in that: The invention comprises an outer shell (1) and a sealing plate (2), wherein the outer shell (1) is trumpet-shaped, an exhaust port (3) is provided on the outer shell (1), a limit ring (4) is installed on the inner wall of the exhaust port (3), the sealing plate (2) is installed obliquely at the opening of the outer shell (1), a flange edge strip (5) is extended outwardly from the outer side of the sealing plate (2), a plurality of air inlets (6) are processed on the sealing plate (2), each of the air inlets (6) is installed with a limit strip (7) extending toward the upper outer shell (1), and a guide pipe opening (8) extending into between the outer shell (1) and the sealing plate (2) is installed at the connection between the lower end of the sealing plate (2) and the outer shell (1).
2. The multifunctional gas collecting hood for laboratory use according to claim 1, characterized in that: The size of the air inlet (6) is smaller than the size of the air outlet (3).
3. The multifunctional gas collecting hood for laboratory use according to claim 1, characterized in that: The flow guide pipe opening (8) is connected to a hose (9).