CN217289713U

CN217289713U - Improved fume hood for chemical analysis experiment

Info

Publication number: CN217289713U
Application number: CN202220294307.7U
Authority: CN
Inventors: 辛宇宙; 童伟; 侯子文; 丛日梅; 杨夏森; 吴学涛; 费纪龙; 周琪志
Original assignee: UNIT 63605 OF PLA
Current assignee: UNIT 63605 OF PLA
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-08-26
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses an improved generation fume hood for chemical analysis experiment, including cupboard and fume hood, fume hood's front is equipped with operation window, the top of cupboard is equipped with the operation panel, fume hood top is equipped with the exhaust fan, the inside of cupboard is equipped with the vacuum pump, fume hood's inside wall is equipped with the sandwich panel, the shaping has the cavity between the inside wall of sandwich panel and fume hood, be equipped with pipeline butt joint panel on the sandwich panel of wherein right side, be equipped with the switch that is used for controlling the vacuum pump on the pipeline butt joint panel and the intake pipe interface and the blast pipe interface that the structure is the same, intake pipe interface and blast pipe interface pass through pipeline and vacuum pump connection. The utility model discloses a set up the vacuum pump in the cupboard to with vacuum pump control switch, intake pipe interface and blast pipe interface integration on the inboard pipeline butt joint panel of sandwich panel, not only saved the usage space of operation panel, also reduced the noise interference of vacuum pump at the during operation, realized the noise reduction operation and the convenient operation of vacuum pump.

Description

Improved fume hood for chemical analysis experiment

Technical Field

The utility model relates to an equipment field for the chemical analysis experiments, concretely relates to improved generation fume hood for chemical analysis experiments.

Background

Dinitrogen tetroxide is a strong oxidant widely used in aerospace propulsion systems, has strong corrosivity, and can cause great damage to human bodies once being infected or breathed. Before the dinitrogen tetroxide is added, the dinitrogen tetroxide of the batch needs to be sampled and tested, and in order to ensure the operation safety of a tester, the tester needs to perform related test operations related to propellant contact in a fume hood besides making personal related protection (wearing protective equipment). The particulate matter content of dinitrogen tetroxide is measured under a certain vacuum condition, and a vacuum pump is generally used for pumping a filter flask to realize a certain vacuum. Current fume hood structure is comparatively simple, and the vacuum pump setting can produce certain noise at the operation panel one corner of fume hood, vacuum pump at the during operation, causes the interference to experiment operating personnel. On the other hand, the vacuum pump setting also makes arranging of intake pipe and blast pipe all expose on the operation panel of fume hood, causes the pipeline overall arrangement not regular enough, has also taken the space on the operation panel simultaneously, brings very big inconvenience for laboratory staff's operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the technology, the utility model provides an improved fume hood for chemical analysis experiments.

The utility model discloses realize that the technical scheme that above-mentioned technological effect adopted is:

an improved fume hood for chemical analysis experiments comprises a cabinet and a fume hood connected to the cabinet, wherein an operation window is arranged on the front face of the fume hood, an operation table is arranged at the top of the cabinet, an exhaust fan is arranged at the top of the fume hood, a vacuum pump is arranged in the cabinet, a sandwich plate is arranged on the inner side wall of the fume hood, a cavity is formed between the sandwich plate and the inner side wall of the fume hood, a pipeline butt joint panel is arranged on the sandwich plate on the right side, a switch for controlling the vacuum pump and an air inlet pipe interface and an air outlet pipe interface which are identical in structure are arranged on the pipeline butt joint panel, and the air inlet pipe interface and the air outlet pipe interface are connected with the vacuum pump through pipelines.

Preferably, in the above improved fume hood for chemical analysis experiments, an air inlet pipe is connected between an air inlet of the vacuum pump and the air inlet pipe interface, an exhaust pipe is connected between an air outlet of the vacuum pump and the exhaust pipe interface, the other end of the air inlet pipe interface is connected with a quick pipe valve assembly, the quick pipe valve assembly is connected with the air inlet hose in a pluggable manner, and the other end of the exhaust pipe interface is connected with the pluggable exhaust hose.

Preferably, in the improved fume hood for chemical analysis experiments, the quick connection pipe valve assembly comprises a quick connection pipe connected with the other end of the air inlet pipe connector, a four-way valve and a through valve are arranged on the quick connection pipe, a right valve port of the four-way valve is connected with the tail end of the quick connection pipe, an upper valve port is connected with a vacuum pressure gauge, a bottom vent is connected with the through valve, and a left suction filter is connected with a suction filter hose.

Preferably, in the above improved fume hood for chemical analysis experiments, the quick-connection pipe is connected with the other end of the air inlet pipe interface through a female head.

Preferably, in the improved fume hood for chemical analysis experiments, an exhaust duct interface connected with an air outlet end of the exhaust fan is arranged at the top of the hood, and the exhaust duct interface is connected with external exhaust gas treatment equipment through an air duct.

Preferably, in the improved fume hood for chemical analysis experiments, the top of the hood is further provided with an illuminating lamp tube for illuminating the operating table.

Preferably, in the above-mentioned modified fume hood for chemical analysis experiments, a shock pad is provided at the bottom of the hood, and the vacuum pump is fixed on the shock pad.

Preferably, in the improved fume hood for chemical analysis experiments, an air deflector is arranged on an inner side surface of a back plate of the hood, an air guide duct is arranged between the air deflector and the back plate, and an air guide opening communicated with the air guide duct is arranged at a lower part of the air deflector.

The utility model has the advantages that: the utility model discloses an improved generation fume hood is through setting up the vacuum pump in the cupboard to inside wall at the fume hood cover sets up the sandwich panel, the constitution has the cavity that can lay intake pipe and blast pipe, simultaneously with vacuum pump control switch, intake pipe interface and blast pipe interface integration on the inboard pipeline butt joint panel of sandwich panel, the usage space of operation panel has not only been saved, the noise interference of vacuum pump at the during operation has also been reduced, the noise reduction operation and the convenient operation of vacuum pump have been realized.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an internal structural view of the present invention;

fig. 3 is a structural diagram of the quick pipe joint valve assembly of the present invention on a pipe joint panel;

fig. 4 is a top view of the hood of the present invention;

fig. 5 is a schematic diagram of the air duct of the present invention.

Detailed Description

For a further understanding of the invention, reference is made to the following description taken in conjunction with the accompanying drawings and specific examples, in which:

in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being 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 invention.

As shown in fig. 1, 2 and 3, the embodiment of the present invention provides an improved fume hood for chemical analysis experiments, which includes a cabinet 1 and a fume hood 2 connected to the cabinet 1, wherein an operation window is disposed on a front surface of the fume hood 2, an operation table 3 is disposed on a top of the cabinet 1, and a lower edge of the operation window is flush with an upper surface of the operation table 3. As shown in fig. 2, the top of the hood 2 is provided with a fan 8, the top of the hood 2 is provided with a duct connector 81 connected to the outlet of the fan 8, and the duct connector 81 is connected to an external exhaust gas treatment device through a duct. When the ventilating hood is used, the exhaust fan 8 pumps and exhausts air in the ventilating hood 2 to the external tail gas treatment equipment connected with the air pipe, so that harmful gas emitted by an experiment is prevented from entering a laboratory environment. As an improvement of the present invention, as shown in fig. 1 and 2, a vacuum pump 4 is disposed inside the cabinet 1, and a sandwich panel 5 is disposed on the inner side wall of the hood 2. In particular, as shown in fig. 2, a chamber 6 is formed between the sandwich panel 5 and the inner side wall of the hood 2, the chamber 6 being used for routing pipes. As shown in fig. 2, a pipeline butt-joint panel 7 is provided on the right sandwich plate 5, and a switch 45 for controlling the vacuum pump 4, and an air inlet pipe connector 71 and an air outlet pipe connector 72 having the same structure are provided on the pipeline butt-joint panel 7. Specifically, the intake pipe port 71 and the exhaust pipe port 72 are connected to the vacuum pump 4 through a pipe arranged in the chamber 6.

Further, in the preferred embodiment of the present invention, as shown in fig. 3, an air inlet pipe 41 is connected between the air inlet of the vacuum pump 4 and the air inlet pipe connector 71, and an air outlet pipe 42 is connected between the air outlet of the vacuum pump 4 and the air outlet pipe connector 72. Specifically, as shown in fig. 2, the other end of the intake pipe connector 71 is connected to the quick-connection valve assembly 43, and the other end of the exhaust pipe connector 72 is connected to the pluggable exhaust hose 44. The quick connection pipe valve assembly 43 is connected with the suction filtration hose in a pluggable mode, when the container needs to be vacuumized, the suction filtration hose can be connected to the quick connection pipe valve assembly 43, the other end of the suction filtration hose is connected into the container to be vacuumized, and then the air inlet of the quick connection pipe valve assembly 43 is opened, so that the container can be vacuumized.

Further, in the preferred embodiment of the present invention, as shown in fig. 3, the quick connection pipe valve assembly 43 comprises a quick connection pipe connected to the other end of the air inlet pipe connector 71, and the quick connection pipe is provided with a four-way valve 433 and a straight-through valve 432. Wherein, the right side valve port of the four-way valve 433 is connected with the end of the quick connection pipe, the upper end valve port is connected with the vacuum pressure gauge, the bottom vent 4331 is connected with the straight-through valve, and the left side suction filter 4332 is connected with the suction filter hose. The quick-connection pipe is connected with the other end of the air inlet pipe connector 71 through the female head 431. Specifically, during evacuation, the through valve connected to the vent 4331 is closed to stop the vent 4331. When the vacuum pumping is finished and the vacuum pump 4 needs to be stopped, in order to prevent the pump oil of the vacuum pump 4 from being sucked into the air inlet pipe 41, the vent 4331 is communicated with the outside by opening the through valve on the vent 4331, so that the pressure in the air inlet pipe 41 can be balanced, and the pump oil is prevented from being sucked into the air inlet pipe 41. After the evacuation is completed, the suction filter hose connected to the suction filter port 4332 and the removable exhaust hose 44 connected to the other end of the exhaust pipe port 72 can be removed.

Further, in the preferred embodiment of the present invention, as shown in fig. 1 and 4, the top of the hood 2 is further provided with an illumination tube 9 for illuminating the console 3, and when the lighting condition is bad, the illumination tube 9 can be turned on to illuminate the console 3. As shown in fig. 2, the cabinet 1 is provided with a shock pad 12 at the bottom, and the vacuum pump 4 is fixed on the shock pad 12, so that the shock pad 12 can reduce the effect of the shock of the vacuum pump 4 on the fume hood. As shown in fig. 1, 2 and 5, an air guide plate 21 is disposed on an inner side surface of a back plate 22 of the hood 2, an air guide duct 23 is disposed between the air guide plate 21 and the back plate 22, an air guide opening 211 communicated with the air guide duct 23 is disposed at a lower portion of the air guide plate 21, and an air duct opening at an upper end of the air guide duct 23 is connected to an exhaust suction opening of the exhaust fan 8. Specifically, the negative pressure generated by the exhaust fan 8 during operation acts on the outlet air duct 23, and then the negative pressure suction force is formed at the air guide port 211, so that the exhaust gas generated during the experiment and the gas exhausted from the exhaust hose 44 can enter the outlet air duct 23 through the air guide port 211 and then be exhausted through the exhaust fan 8. The exhaust path of the waste gas can be changed through the air guide opening 211 and the guide air duct 23, the waste gas is prevented from being scattered from the outer operation window, and the pumping and discharging effect on the waste gas is improved.

To sum up, the utility model discloses an improved generation fume hood is through setting up the vacuum pump in the cupboard to inside wall at the fume hood cover sets up the sandwich panel, constitutes to have the cavity that can lay intake pipe and blast pipe, simultaneously with vacuum pump control switch, intake pipe interface and blast pipe interface integration on the inboard pipeline butt joint panel of sandwich panel, not only saved the usage space of operation panel, also reduced the noise interference of vacuum pump at the during operation, realized noise reduction operation and the convenient operation of vacuum pump.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the foregoing embodiments and the description with reference to the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the invention as claimed, which is defined by the claims appended hereto and their equivalents.

Claims

1. An improved fume hood for chemical analysis experiments comprises a cabinet (1) and a fume hood cover (2) connected to the cabinet (1), wherein an operation window is arranged on the front side of the fume hood cover (2), an operation table (3) is arranged at the top of the cabinet (1), an exhaust fan (8) is arranged at the top of the fume hood cover (2), the improved fume hood is characterized in that a vacuum pump (4) is arranged inside the cabinet (1), a sandwich plate (5) is arranged on the inner side wall of the fume hood cover (2), a cavity (6) is formed between the sandwich plate (5) and the inner side wall of the fume hood cover (2), a pipeline butt joint panel (7) is arranged on the sandwich plate (5) on the right side, a switch (45) for controlling the vacuum pump (4) and an air inlet pipe interface (71) and an air outlet pipe interface (72) which are identical in structure are arranged on the pipeline butt joint panel (7), the air inlet pipe interface (71) and the air outlet pipe interface (72) are connected with the vacuum pump (4) through pipelines.

2. The fume hood for chemical analysis experiments according to claim 1, wherein an air inlet pipe (41) is connected between the air inlet of the vacuum pump (4) and the air inlet pipe interface (71), an air outlet pipe (42) is connected between the air outlet of the vacuum pump (4) and the air outlet pipe interface (72), the other end of the air inlet pipe interface (71) is connected with a quick-connect pipe valve assembly (43), the quick-connect pipe valve assembly (43) is connected with an air inlet hose in a pluggable manner, and the other end of the air outlet pipe interface (72) is connected with a pluggable air outlet hose (44).

3. The improved fume hood for chemical analysis experiments as claimed in claim 2, wherein the quick connection pipe valve assembly (43) comprises a quick connection pipe connected with the other end of the air inlet pipe connector (71), a four-way valve (433) and a straight-through valve (432) are arranged on the quick connection pipe, a right side valve port of the four-way valve (433) is connected with the tail end of the quick connection pipe, an upper end valve port is connected with a vacuum pressure gauge, a bottom vent (4331) is connected with a straight-through valve, and a left side suction filter port (4332) is connected with a suction filter hose.

4. The fume hood for chemical analysis experiments according to claim 3, characterized in that said quick-connect tube is connected to the other end of said air inlet interface (71) through a female connector (431).

5. The improved fume hood for chemical analysis experiments according to claim 1, characterized in that the top of the hood (2) is provided with an air exhaust pipe connector (81) connected with the air outlet end of the air exhaust fan (8), and the air exhaust pipe connector (81) is connected with external tail gas treatment equipment through an air pipe.

6. The fume hood for chemical analysis experiments according to claim 1, characterized in that the top of the hood (2) is further provided with lighting tubes (9) for illuminating the worktop (3).

7. The fume hood for chemical analysis experiments according to claim 1, characterized in that the bottom of the cabinet (1) is provided with a shock pad (12), the vacuum pump (4) being fixed on the shock pad (12).

8. The improved fume hood for chemical analysis experiments according to claim 1, wherein an air deflector (21) is arranged on an inner side surface of a back plate (22) of the hood (2), an air guiding duct (23) is arranged between the air deflector (21) and the back plate (22), and an air guiding opening (211) communicated with the air guiding duct (23) is arranged at the lower part of the air deflector (21).