A multi-membrane sampling and weighing device

Abstract

The invention discloses a multi-film sampling weighing device. The multi-film sampling weighing device comprises a base, a rotary feeding mechanism and a lifting feeding mechanism, wherein the lifting feeding mechanism comprises a lifting table, a lifting drive device and a guide rail lifting device; the lifting drive device is connected with the guide rail lifting device; a filter film box assembly is arranged on the guide rail lifting device; the filter film box assembly comprises a filter film conveying box, a film box fixing frame and a clamping device; the clamping device is arranged on the film box fixing frame; the clamping device is connected with the filter film conveying box; the rotary feeding mechanism comprises a rotary supporting frame, a rotary motor, a rotary shaft, a distributing plate and a deflector rod; the upper end of the rotary supporting frame is connected with the distributing plate; the lower end of the rotary supporting frame is connected with the base; the rotary motor is arranged in the rotary supporting frame; the output end of the rotary motor is connected with the rotary shaft; the rotary shaft is connected with the distributing plate; the distributing plate is connected with the deflector rod; and an inlet gas sampling device is connected to the distributing plate. The device is simple in structure, is scientific and convenient, is strong in purpose, is high in degree of automation, and solves the automatic sampling problem of detected gas very well.

Description

technical field [0001] The invention relates to a multi-membrane sampling and weighing device. Background technique [0002] In the technical field of gas sampling instruments, fully automatic samplers are widely used in the automatic sampling of air samples due to their high degree of automation and stability, providing a fast and convenient sampling device for the detection of PM10, PM2.5 and other components in the gas. The automatic sampler technology mainly uses a single-chip microcomputer to control the motor, manipulator and peristaltic pump, so as to realize the automatic membrane changing function. The pretreatment device mainly processes the gas samples for subsequent detection. [0003] Existing samplers use a suction pump to extract the atmosphere in the filter element, and the detected object stays on the outer filter membrane. After the sampling is completed, the sampling head is removed, and the filter membrane is taken for testing. When sampling is required ...

AI Technical Summary

Problems solved by technology

[0003] Existing samplers use a suction pump to extract the atmosphere in the filter element, and the detected object stays on the outer filter membrane. After the sampling is completed, the sampling head is removed, and the filter membrane is taken for testing. When sampling is required in different periods, then Need to disassemble the sampling head constantly to replace the filter membrane, the operation is time-consuming and laborious, and it is extremely inconvenient

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