A vacuum bottle is a container that can isolate gas from outside temperature or bacteria.
The vacuum bottle cosmetic bottle comprises a bottle, a liquid pump piston mechanism arranged at the opening of the bottle body and a control mechanism connected with the liquid pump piston mechanism. The piston and the internal gas seal the bottle. The upper part of the bottle piston chamber forms a bottom piston of the liquid bottle to form an air chamber, the lower side of the bottle piston forms an air chamber, and the bottom of the cosmetic bottle body is provided with an air vent, which is connected with the air chamber.

The pump liquid piston mechanism of the vacuum bottle comprises a bottle cap connected with the cosmetic bottle, and the bottle cap is located on the valve seat, which is matched with the valve seat on the piston mechanism package. The vacuum bottle cover body is provided with a central tube for installation, the valve seat is installed in the cylinder, and the valve seat is provided with a fluid channel. The fluid channel is installed on the cylinder. When the fluid channel runs through the fluid hole, the vacuum bottle pump piston and the cylinder wall are air sealed, and the valve seat is connected with a control mechanism.

A bottom valve is arranged at the liquid hole of the vacuum bottle, a sealing gasket is arranged between the cover body and the bottle body, a groove matching the installation cylinder is arranged on the piston of the cosmetic vacuum bottle, the control mechanism includes connecting the connecting rod gland return spring with the valve seat and limiting the cover, the cover is equipped with a mouth for pressure liquid, a mouth and a liquid connection channel, a return spring and a connection socket, one end of the return spring is connected with the cover body, and the other end is connected with the gland, The limiting cap is connected with the cap body, including limiting the limited opening of the aperture, and a snap ring matching the limiting hole is arranged on the limiting hole gland vacuum bottle cap.

The connecting rod of the vacuum bottle is a hollow structure, the valve seat is arranged inside the connecting rod, and the valve seat is fixedly connected with the connecting rod. The water outlet of the vacuum bottle is provided with a plug body, which also includes a protective cover. The gland and the limit cover are located inside the protective cover. The protective cover is provided with a clamping groove, and the limit cover is provided with a matching clamping groove. The vacuum bottle body comprises an outer bottle and an inner bottle arranged in the outer bottle, and the outer bottle and the inner bottle of the cosmetic bottle are provided with corresponding vents.

The beneficial effect of the cosmetic vacuum bottle is that the bottom piston of the liquid bottle forms an air chamber through the piston of the vacuum bottle and the upper part of the piston chamber. The bottom of the bottle is opened for ventilation and is connected with the air chamber. Therefore, the surface of the lower piston of the bottle is always under atmospheric pressure. When the liquid squeezes the chamber, the cosmetics in the chamber will be a vacuum environment. At this time, the cylinder piston will move upward under the action of atmospheric pressure, That is, it moves with the application of cosmetics in the liquid chamber.

The bottle piston gradually moves upward. A groove matching the installation cylinder is set on the piston of the cosmetic bottle to ensure that the cosmetics in the entire liquid cavity are completely discharged, making the new model simple in structure and practical. In addition, a sealing gasket is arranged between the vacuum bottle cap body and the bottle body to further ensure that the liquid chamber is an air sealed space, which further improves the sealing and practicability of the new type.