Water pot liquid level detecting device as well as mounting structure and fire fighting truck thereof

The utility model discloses a water pot liquid level detecting device as well as a mounting structure and a fire fighting truck of the water pot liquid level detecting device. The device comprises a multi-way connector (2) and a pressure sensor (3), wherein the multi-way connector is provided with a sensor mounting part for mounting the pressure sensor and an inserting and mounting part for inserting the multi-way connector into a water tank (10); a pressure detection hole (5) is formed in the inserting and mounting part; the opening direction of the pressure detection hole is inclined to the inserting and mounting direction of the inserting and mounting part; and moreover the pressure detection hole and the pressure sensor are mutually communicated through an inner chamber flow channel (7) inside the multi-way connector. As the pressure detection hole of the liquid level detecting device is formed in a mode that the opening direction is inclined to the inserting and mounting direction of the liquid level detecting device, impurities in water are prevented from easily entering the inner chamber flow channel of the detecting device, for example, the opening of the pressure detection hole is formed inside the water tank and is arranged towards the bottom of the water tank, the impurities in the water are prevented from sinking or floating into the pressure detection hole to cause blocking.