Chemical experiment table for middle school students

Abstract

The invention relates to the technical field of accessory devices of teaching tools, in particular to a chemical experiment table for middle school students. According to the chemical experiment table, height of a table board can be adjusted, so that the table is suitable for being used by students of different heights, and use reliability is improved; harmful gas produced in a chemical experimentprocess can be treated in time, harm to health of the students is prevented, and practicability is improved; meanwhile, wastewater produced in the chemical experiment process can be treated, pollution to the water environment is prevented, and environmental protection property is improved; the chemical experiment table comprises the table board, a faucet, a placement rack, a water sink, a base, four first threaded rods, four first threaded pipes and four first ball bearings, and further comprises a supporting plate, a slide rod, a slider, a fan, an exhaust column, a telescopic air duct, a waste gas treatment box, a left support plate, a right support plate, a connecting device, activated carbon fiber felt, an exhaust pipe, a gas inlet pipe, a one-way valve, a waste liquid treatment box, acommunicating pipe, a batching box, a filter screen, a drain pipe, a feed delivery pipe and an adjusting valve.

Description

technical field [0001] The invention relates to the technical field of teaching tool attachments, in particular to a chemical experiment table for middle school students. Background technique [0002] As we all know, in the teaching of middle school chemistry, in order to deepen students' mastery of knowledge points, a large number of chemical experiment courses will be arranged. The middle school student chemistry experiment table is an auxiliary device for middle school students to conduct chemical experiments. It is in the field of chemistry teaching. It has been widely used; the existing middle school student chemistry experiment table includes a table top and a faucet, the left front side, the right front side, the left rear side and the right rear side of the bottom end of the table top are all provided with supporting legs, and the top of the table top is provided with a display rack, and Various types of glass instruments are placed on the display rack. A sink is arr...

AI Technical Summary

Problems solved by technology

[0002] As we all know, in the teaching of middle school chemistry, in order to deepen students' mastery of knowledge points, a large number of chemical experiment courses will be arranged. The middle school student chemistry experiment table is an auxiliary device for middle school students to conduct chemical experiments. It is in the field of chemistry teaching. It has been widely used; the existing middle school student chemistry experiment table includes a table top and a faucet, the left front side, the right front side, the left rear side and the right rear side of the bottom end of the table top are all provided with supporting legs, and the top of the table top is provided with a display rack, and Various types of glass instruments are placed on the display rack. A sink is arranged on the right side of the top of the table, and a drain pipe is connected to the bottom of the sink. The bottom end of the drain pipe is connected to the drain pipe. It is located directly above the sink, and the input end of the faucet is connected to the external water source; when using the existing chemical experiment bench for middle school students, when water is needed, the water is received through the faucet, and the chemical experiment operation is carried out on the table. The waste water is poured into the sink, and the sewage enters the drainage pipe from the drainpipe and flows into the sewer; it is found in the use of the existing chemical experiment bench for middle school students that the height of the table cannot be adjusted, and the height of middle school students is very different, causing some students to perform experiments It is inconvenient when used, resulting in low reliability; and in the process of some chemical experiments, harmful gases will be produced. In a chemical laboratory, there are often many students performing chemical experiments at the same time, and the concentration of harmful gases is relatively high. , causing certain damage to the body of the society, resulting in low practicability; at the same time, the direct discharge of waste water generated after the experiment will pollute the water environment, which is not conducive to environmental protection

Images