Pressure control valve for negative pressure food processor

Abstract

The invention relates to the technical field of household electrical appliances for food processing and parts thereof, in particular to a pressure control valve applied to a negative pressure food cooking machine. The cooking machine includes a machine base and a cooking cup. The cooking cup is provided with a handle, and the lid is covered on the cooking cup. A motor and a vacuum pump are installed in the machine base. There is a suction nozzle on the wall of the cooking cup, and the check valve is connected to the suction nozzle. The upper part is connected with the vacuum pump in the frame through the exhaust pipe. The check valve includes a hard shell, a soft shell and a valve core. The soft shell is set on the hard shell to form a closed cavity. The valve core is placed in the cavity and the entrance of the soft shell is closed by its own weight to form a check valve. The pressure part moves the spool away from the inlet of the soft case under the action of external force to open the check valve. The invention has the advantages of simple structure, reliability and long service life.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances for food processing, in particular to a pressure control valve applied to a negative pressure food cooking machine. Background technique [0002] The mixer rotates a cutter provided at the bottom of what is generally called a cooking cup through an electric motor, and processes the food contained in the cooking cup (for example, smashes and stirs the food). This processing is generally carried out in an atmosphere with an oxygen concentration of 21%. Therefore, due to the oxygen in the cooking cup, the oxidized degree of the processed food is relatively strong, which easily causes discoloration of the processed food and the fragrance also tends to fade. The same problem is evident in the production method of apple juice. [0003] In order to solve such problems, application number 201420644356.4, utility model name: a new type of food cooking machine, the technical soluti...

AI Technical Summary

Problems solved by technology

This can effectively solve the problem that the traditional juicer and soup machine have stirring knives to crush the ingredients, resulting in an increase in the contact area between the ingredients and oxygen, and the easy oxidation of the ingredients and the loss of nutrients.

[0004] It is a common method in the prior art to install a vacuum pump in the machine base, and connect the cup cover with a pipe to connect the cup body through the cup handle or other methods to vacuum the cup body. There are dozens of items found through patent retrieval, and this structural method exists. There are many parts, complex structure, many interfaces, and many moving parts, so it is difficult to ensure the sealing performance of the vacuum pipeline, especially after many times of use, it is even more difficult to guarantee the vacuum degree, and the vacuum function is useless

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