Perchloric acid fume hood

Abstract

The utility model relates to a perchloric acid fume hood which comprises a shell, the shell comprises an upper hood body and a lower hood body, the upper hood body and the lower hood body are movably connected, and the upper hood body is provided with an operation platform; the circulating water pump is arranged in the lower cabinet; the three-way valve is arranged at an outlet of the circulating water pump; the heating plate is arranged on the operation platform; and the water baffle is arranged on the upper cabinet. According to the perchloric acid fume hood, the outlet of the circulating water pump is connected through the three-way valve, one path of circulating water is supplied, one path of water in the water tank is discharged, the rear water baffle is arranged, a water circulation system is optimized, and the ventilation effect is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fume hoods, in particular to a perchloric acid fume hood. BACKGROUND

[0002] When handling strong corrosive chemicals such as perchloric acid, the inherent limitations of traditional fume hoods can lead to an increase in safety hazards. These chemicals are known for their high corrosiveness and toxicity, and once leaked or mishandled, they will pose a serious threat to the environment and operating personnel.

[0003] The circulating water system of the traditional fume hood is used to cool and dilute the leaked chemicals, but in the case of improper design, it may instead become a source of safety hazards. At the same time, effective ventilation is the key to preventing the accumulation and spread of harmful gases, but the traditional fume hood may reduce its effectiveness due to unreasonable air flow design. This not only may expose operating personnel to a harmful environment, but also may contaminate the entire laboratory or building through air transmission. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the application provides a perchloric acid fume hood, the outlet of the circulating water pump is connected through a three-way valve, a rear water baffle is arranged, the water circulation system is optimized, and the ventilation effect is improved.

[0005] The utility model discloses a perchloric acid fume hood, comprising a shell, the shell includes upper cabinet and lower cabinet, the upper cabinet and lower cabinet swing joint, the upper cabinet is provided with operation platform, circulating water pump, circulating water pump sets up in the lower cabinet, three -way valve, three -way valve sets up at the outlet of circulating water pump, heating plate, heating plate sets up on operation platform, baffle, baffle sets up in the upper cabinet.

[0006] In a possible implementation manner, a circulating water tank is further included, the circulating water tank is arranged in the lower cabinet, and the circulating water pump is connected with the circulating water tank.

[0007] In a possible implementation manner, a spray pipe and a spray head are further included, one end of the spray pipe is connected with the circulating water tank, and the other end of the spray pipe is connected with the spray head.

[0008] In a possible implementation manner, the spray head includes a first spray head and a second spray head, the first spray head and the second spray head are respectively communicated with the spray pipe, and the first spray head and the second spray head are arranged in parallel.

[0009] In a possible implementation manner, a recess is arranged on the operation platform, the recess is used for placing the heating plate, and the heating plate is arranged flush with the operation platform.

[0010] In a possible implementation, the heating plate and the operation platform are provided with a gap in front of the operation platform, and the gap has a diameter of 5 mm-10 mm.

[0011] In a possible implementation, high-temperature-resistant silica gel is further included, and the high-temperature-resistant silica gel is used to fill the gap between the heating plate and the operation platform, and the high-temperature-resistant silica gel is used to improve the sealing between the heating plate and the operation platform.

[0012] In a possible implementation, the water baffle is arranged on the upper cabinet and is perpendicular to the operation platform, the water baffle and a surface of the upper cabinet form an air duct, and one side of the air duct is connected to an air extractor.

[0013] In a possible implementation, the height of the water baffle is 200 mm.

[0014] In a possible implementation, a window is further included, and the window is arranged on one side of the upper cabinet, and the window is made of PVC.

[0015] Advantages of the present application:

[0016] The high perchloric acid fume hood provided in the embodiment of the present application comprises an upper cabinet and a lower cabinet, the upper cabinet and the lower cabinet are movably connected, and the upper and lower cabinets are designed in a modular manner, so that transportation, carrying and installation are facilitated, and maintenance and replacement of parts are also facilitated. The upper cabinet is provided with an operation platform; a circulating water pump is arranged in the lower cabinet; a three-way valve is arranged at the outlet of the circulating water pump, and the outlet of the circulating water pump is connected through the three-way valve, so that one-way circulating water supply and one-way water discharge in the water tank are realized. A heating plate is arranged on the operation platform, so as to ensure sealing and prevent liquid overflow from flowing into the lower cabinet. A water baffle is arranged at the rear part of the fume hood, and the water baffle is higher than common experimental vessels, so that steam and volatile gas naturally flow to an air extraction port.

[0017] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and serve to explain the principles of the present application.

[0019] Fig. 1 FIG. 1 shows a structure schematic diagram of a perchloric acid fume hood according to an embodiment of the present application;

[0020] Fig. 2 FIG. 2 shows a side structure schematic diagram of the perchloric acid fume hood according to the embodiment of the present application.

[0021] Reference signs:

[0022] 110 - upper cabinet; 111 - operation platform; 120 - lower cabinet; 210 - circulating water pump; 220 - circulating water tank; 300 - baffle; 410 - spray pipe; 420 - spray head; 421 - first row of spray heads; 422 - second row of spray heads; 500 - window. DETAILED DESCRIPTION

[0023] Various exemplary embodiments, features, and aspects of the present application will be described herein below with reference to the accompanying drawings. The same reference numbers in different drawings indicate the same or similar elements. Although various aspects of embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0024] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate relative or positional relationships based on the orientation or position shown in the drawings, and are used merely for convenience and brevity in describing the present application or simplifying the description, and thus cannot be construed as indicating or implying that a device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0025] In addition, the terms "first", "second", and the like are used merely as a label to distinguish between two or more elements, and are not intended to indicate relative importance of the elements or a number of the elements. Thus, a feature defined with "first" or "second" can include one or more such features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0026] The term "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0027] In addition, numerous specific details are given in the following detailed description. One skilled in the relevant art will understand that the application can be practiced without some or all of the specific details given. In some instances, well-known methods, apparatuses, elements, and circuits have not been described in detail in order to not obscure the application.

[0028] The perchloric acid ventilation cabinet in the embodiment of the utility model is a kind of experimental equipment for processing toxic, strong corrosive chemicals such as perchloric acid, which is made of corrosion-resistant material, such as stainless steel or PP plate, to resist the corrosion of chemicals such as perchloric acid.The cabinet body is a double-layer structure, with a sandwich between the outer shell and the inner lining, which can accommodate water, electricity and gas pipeline systems, and ensure the air tightness and protection of the cabinet body.The fan is responsible for extracting air from the inside of the ventilation cabinet and discharging it outside through the exhaust duct.The filter is used to filter toxic gases and particulate matter in the air to ensure that the discharged gas meets environmental protection requirements.The exhaust duct guides the harmful gas to be discharged outside after a series of treatments to ensure that it does not pollute the environment.The deflector is used to distribute the exhaust evenly without dead angles to ensure that gases of different specific gravities can be effectively removed.The operating platform is placed on the bottom cabinet for placing experimental equipment and performing experimental operations.The table top is made of corrosion-resistant material to resist the corrosion of chemicals.The bottom cabinet is connected with the exhaust pipeline to help extract harmful gas from the inside of the ventilation cabinet.The control system is used to control the operation of the ventilation cabinet, including functions such as switch, air speed and lighting, and the buttons and indicator lights on the control panel make the operation more convenient.The monitoring equipment monitors parameters such as temperature, humidity and gas concentration in the working area in real time and sends an alarm when the set value is exceeded to ensure the safe operation of the experiment.

[0029] As shown in Figs. 1-2 The utility model embodiment provides a perchloric acid ventilation cabinet, comprising;Shell, shell includes upper cabinet 110 and lower cabinet 120, upper cabinet 110 and lower cabinet 120 swing joint, upper cabinet 110 is provided with operating platform 111;Circulating water pump 210, circulating water pump 210 is set in lower cabinet 120;Three-way valve, three-way valve is set at the outlet of circulating water pump 210;Heating plate, heating plate is set on operating platform 111;Water baffle 300, water baffle 300 is set in upper cabinet 110.

[0030] Specifically, the shell includes upper cabinet 110 and lower cabinet 120, and the upper cabinet 110 and the lower cabinet 120 are swing connected.The modular design of the upper and lower cabinets 120 is separated, which is convenient for transportation, carrying and installation, and also facilitates maintenance and replacement of parts.The upper cabinet 110 is provided with an operating platform 111;The circulating water pump 210 is arranged in the lower cabinet 120;The three-way valve is arranged at the outlet of the circulating water pump 210, and the outlet of the circulating water pump 210 is connected through the three-way valve to realize one-way circulating water supply and one-way water discharge in the water tank.The heating plate is arranged on the operating platform 111 to ensure the sealing property and prevent liquid from overflowing into the lower cabinet 120.The water baffle 300 is arranged at the rear part of the ventilation cabinet and is slightly higher than the commonly used experimental vessels, so that the steam and volatile gas flow naturally to the air extraction port.

[0031] In some embodiments, a circulating water tank 220 is also included, which is arranged in the lower cabinet 120, and the circulating water pump 210 is connected to the circulating water tank 220.

[0032] In some embodiments, the spray pipe 410 is connected to the circulating water tank 220 at one end and connected to the spray head 420 at the other end.

[0033] In some embodiments, the spray head includes a first spray head 421 and a second spray head 422, which are respectively connected to the spray pipe 410 and arranged in parallel.

[0034] In some embodiments, a recess is provided on the operation platform 111, and a heating plate is placed in the recess. The heating plate is flush with the operation platform 111. The table top is made of high-temperature-resistant and corrosion-resistant ceramic material. The operation depth design conforms to human engineering, and the operation is comfortable and convenient.

[0035] In some embodiments, a gap is provided between the heating plate and the operation platform 111, and the diameter of the gap is 5-10 mm.

[0036] In some embodiments, high-temperature-resistant silica gel is further included, which is used to fill the gap between the heating plate and the operation platform 111, and to improve the sealing between the heating plate and the operation platform 111. It prevents the overflow liquid from flowing into the lower cabinet 120. The controller of the heating plate is embedded on the fume hood operation panel, realizing the integration of the heating plate and the controller, and the operation is intuitive, convenient for monitoring and adjusting.

[0037] In some embodiments, the water baffle 300 is arranged on the upper cabinet 110 and perpendicular to the operation platform. The water baffle 300 forms an air duct with the surface of the upper cabinet 110, and one side of the air duct is connected to the exhaust fan.

[0038] In some embodiments, the height of the water baffle is 200 mm, slightly higher than the commonly used experimental vessels, so that the steam and volatile gas naturally flow to the exhaust port.

[0039] In some embodiments, a window 500 is further included, which is arranged on one side of the upper cabinet 110, and the material of the window 500 is PVC. The window 500 is made of PVC material with high transparency, which not only ensures good vision, but also avoids the corrosion of perchloric acid to the window 500. The guide plate and the side plate are made of high-temperature-resistant and strong acid and alkali-resistant composite materials, which can still work stably in high-temperature or corrosive environment.

[0040] Having described various embodiments of the application, it is to be understood that the above description is meant not to limit and not to encompass all of the possible embodiments. Many modifications and variations of this application can be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. It is intended that the scope of the application be defined by the scope of the patent and by the claims as allowed by the patent office, which can include adaptations based on the description, equivalents, and / or substitutions of elements individually or collectively to the entire disclosure.

Claims

1. A perchloric acid fume hood characterized by, Include; The shell includes an upper cabinet and a lower cabinet, which are movably connected, and the upper cabinet is provided with an operation platform; A circulating water pump is arranged in the lower cabinet; A three-way valve is arranged at the outlet of the circulating water pump; A heating plate is arranged on the operation platform; A water baffle is arranged in the upper cabinet.

2. The perchloric acid fume hood of claim 1, wherein, It also includes a circulating water tank arranged in the lower cabinet, and the circulating water pump is connected to the circulating water tank.

3. The perchloric acid fume hood of claim 2, wherein, It also includes a spray pipe and a spray head, one end of the spray pipe is connected to the circulating water tank, and the other end of the spray pipe is connected to the spray head.

4. The perchloric acid fume hood of claim 3, wherein, The spray head includes a first spray head and a second spray head, which are respectively connected to the spray pipe, and the first spray head and the second spray head are arranged in parallel.

5. The perchloric acid fume hood of claim 1, wherein, A recess is arranged on the operation platform, and the recess is used to place the heating plate, and the heating plate is arranged flush with the operation platform.

6. The perchloric acid fume hood of claim 5, wherein, A gap is arranged between the heating plate and the operation platform, and the diameter of the gap is 5mm-10mm.

7. The perchloric acid fume hood of claim 6, wherein, It also includes high-temperature-resistant silica gel, which is used to fill the gap between the heating plate and the operation platform, and the high-temperature-resistant silica gel is used to improve the sealing between the heating plate and the operation platform.

8. The perchloric acid fume hood of claim 1, wherein, The water baffle is arranged in the upper cabinet and is perpendicular to the operation platform, and the water baffle and the surface of the upper cabinet form an air duct, one side of the air duct is connected to an air extractor.

9. The perchloric acid fume hood of claim 8, wherein, The height of the water baffle is 200mm.

10. The perchloric acid fume hood of claim 1, wherein, It also includes a window, which is arranged on one side of the upper cabinet, and the material of the window is PVC.

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