Dry ice granulator

Abstract

The invention discloses a dry ice granulator, and belongs to the technical field of dry ice processing and manufacturing. The dry ice granulator comprises a rack, a compression molding device, a hydraulic station, an electric control system and a cooling system are arranged on the rack. The dry ice granulator is characterized in that the compression molding device comprises a power mechanism, a working mechanism and a connecting plate, the connecting plate is arranged between the power mechanism and the working mechanism, and the power mechanism, the working mechanism and the connecting plate are detachably connected together; the power mechanism comprises a piston push rod; the working mechanism comprises a piston, a fixing bolt and a working chamber; the piston is in threaded connection with the front end of the piston push rod through a fixing bolt, and the piston, the fixing bolt and the piston push rod are all located in the working chamber. The working chamber is mainly composed of a condensation exhaust part and a pressing forming part, and the condensation exhaust part and the pressing forming part are located on the front portion and the rear portion of the working chamber respectively. Compared with the prior art, the dry ice granulator has the characteristics of prolonging the service life of the dry ice granulator and solving the problem of cost waste.

Description

technical field [0001] The invention relates to the technical field of dry ice processing and manufacturing, in particular to a dry ice pellet machine. Background technique [0002] Carbon dioxide solid is commonly known as "dry ice". With the development of industry, dry ice is widely used in various fields such as food preservation, removal of grease and dirt on industrial mold equipment. The manufacture of dry ice is the process of turning liquid carbon dioxide into a snowflake-like solid through a throttling expansion valve, and then using a compression mechanism to squeeze the snowflake-like solid into shape. [0003] For example, the existing Chinese utility model patent with patent number CN201120236759.1 discloses a dry ice pellet machine, which is basically described as: including a power component, a hydraulic control reversing component, and an extruder connected to the hydraulic control reversing component. The extrusion part includes an extrusion cylinder and a...

AI Technical Summary

Problems solved by technology

[0005] ①The dry ice pellet machine drives the compression mechanism through the hydraulic system to carry out extrusion molding work. When the dry ice pellet machine works for a long time and the temperature of the hydraulic oil is too high, the precision components in the hydraulic system are kept at a high temperature for a long time, which will cause For certain deformation, due to the different materials of different components, their thermal expansion coefficients are also different. Different deformation ranges will cause the tolerance between components to exceed a reasonable range, which will affect the transmission accuracy of the system, resulting in blocked valve body movement and hydraulic oil leakage. The normal operation of the dry ice pellet machine;

[0006] ②When the dry ice pellet machine is feeding, when the liquid carbon dioxide enters the dry ice pellet machine from the storage tank through the feeding pipeline, part of the liquid carbon dioxide will condense into a snowflake-like solid in the feeding pipeline, and the dry ice pellet machine will work for a long time. , the volume of snowflake-like solids in the feed pipe decreases and becomes more, which leads to the blockage of the feed pipe and affects the normal operation of the dry ice pellet machine;

[0007] ③ After the dry ice pellet machine is fed, the liquid carbon dioxide absorbs heat and condenses into a snowflake-like solid in the working chamber. Some snowflake-like solids will be discharged from the vent hole to the outside world, resulting in a lot of waste of cost;

[0008] ④ When the dry ice pellet machine is performing compression molding operations, its compression mechanism is used to connect the piston to the fixing bolt on the piston rod. During long-term work, it is prone to loosening or even falling off under the influence of vibration and other factors. This phenomenon will cause the piston to fall off from one end of the piston rod, and the falling piston will be impacted by the piston rod during the working process of the compression mechanism, which will cause extremely serious impact, friction and other damage to the dry ice pellet machine, affecting the normal operation of the dry ice pellet machine;

[0009] ⑤When the dry ice pellet machine is performing compression molding operations, the piston in the compression mechanism is doing reciprocating linear motion. During this process, when the piston is performing reset movement, it will often carry some snowflake-like solids in the working chamber to the piston and the piston. At one end of the rod connection, after working for a long time, there is too much ice accumulated between the piston and the piston rod, which is formed by snowflake-like solids, and the piston cannot be reset, which affects the normal operation of the dry ice pellet machine

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