CPC G01G 7/02 (2013.01) [G01G 21/02 (2013.01); G01G 21/22 (2013.01); G01G 21/286 (2013.01); G01G 23/00 (2013.01)] | 10 Claims |
1. An integrated high-precision weighing module, comprising:
a shell comprising a housing having an upper end surface provided with a through hole;
an electromagnetic force sensor, mounted in the shell, with a bearing head of the electromagnetic force sensor that extends upward from an upper end portion of the shell through the through hole;
a printed circuit board (PCB), mounted in the shell;
a weighing pan component, mounted on the bearing head;
a support ring that is sheathed over the bearing head and is located between the weighing head component and the shell, the support ring comprising a support plate and a mounting portion that is disposed on the support plate, wherein the support ring is sheathed over the bearing head, in a clearance fit, by means of the mounting portion; and
an air baffle ring, located on the support ring and disposed around the weighing pan component;
wherein a first airflow channel is formed among the shell, the support ring, and the air baffle ring, such that at least a part of the airflow in the shell flows to the outside though the first airflow channel when the integrated high-precision weighing module is powered on;
wherein the support plate is provided with a plurality of air channel holes that surround the mounting portion and are in communication with the through hole, a protrusion that extends upward is arranged in a circle at a periphery of the air channel holes, such that a flow channel is formed between the protrusion and the mounting portion; and
wherein a lower portion of the air baffle ring is in clearance-fit with an upper portion of the support ring to form a first gap channel, and the first airflow channel is formed by the flow channel being in communication with the first gap channel.
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