Support for assembling filter

The utility model discloses a support for assembling a filter, and relates to the field of supports for assembling filters, the support comprises a stretching assembly, the stretching assembly comprises a support, a placing groove, a connecting rod, a placing disc, a telescopic rod, a base, a first gear, a second gear, a positioning block and an arc-shaped groove, the first gear and the second gear are rotationally connected to the end of the placing disc, and the connecting rod is connected with the arc-shaped groove. The first gear is in meshed connection with the second gear, an arc-shaped groove is formed in the second gear, a positioning block is slidably connected into the arc-shaped groove, the end of the positioning block extends into the containing disc to be connected with a support, and the end of the support extends out of the outer side of the containing disc. Under the condition that the precision and reliability of the support are not affected, the filter assembling system can be more perfect t