CN2443788Y - Dry ice cleaning machine - Google Patents

Abstract

The dry ice blasting machine includes an upper cover screen, an ice storage room connected to the dry ice particle outlet pipe, a control room, a gas distribution valve, an oil-water separator, and an ejector. During cleaning, the dry ice particles are poured into the ice storage chamber through the screen, the compressed air enters the gas distributor through the oil-water separator, a part of the gas is sent to the ejector through the vibrating air pipe, the ice storage chamber, and the dry ice particle outlet pipe, and the other part of the gas enters the cleaning outlet. The two pipes in the injector are connected to the nozzle and shoot to the surface of the cleaning object. The cleaning process is controlled and adjusted by the control room and the nozzle adjustment switch. The utility model has good online cleaning effect, does not damage the cleaning surface, has no pollution, is convenient to operate, and has no downtime.

Description

Dry ice blasting machine

The utility model relates to a device for cleaning by spraying dry ice.

For the cleaning of dirt in metal processing industry, light industry, power industry, food industry, chemical industry, electronics industry, aviation industry, shipbuilding industry, military industry, etc., the cleaning methods widely used at present mainly include sand blasting, shot blasting and solvent cleaning. The sandblasting and shot blasting cleaning methods make the surface of the object to be cleaned wear and tear, and after cleaning, waste treatment must be carried out; although the solvent cleaning method prevents the surface of the object from abrasion, it requires secondary treatment of pollutants. The cleaning methods described above require bulky structures, long cleaning cycles and require downtime.

The purpose of this utility model is to provide a light and compact structure, convenient operation, no downtime, and no damage to the cleaning substrate while cleaning the dirt.

In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: an ice storage room and a control room are provided with an upper cover screen in the casing, and a dry ice particle outlet pipe is connected to the bottom; one end communicates with the ice storage room through a vibrating air pipe, The other end is connected to the gas distribution valve of the cleaning gas outlet pipe. The dry ice particle outlet pipe is connected to one end of the injector through the valve and the medium hose, and the cleaning gas outlet pipe is connected to the other end of the injector through the valve and the gas hose. After the two hoses are connected to the nozzle, the casing is equipped with an oil-water separator that communicates with the gas distribution valve at one end and with the compressed air inlet valve at the other end.

Compared with the prior art, the utility model has the following advantages:

1) Dry ice is used as the cleaning medium, which volatilizes into harmless carbon dioxide gas after cleaning, does not damage the cleaning surface, does not produce secondary waste, and does not cause any harm to the operator, so it has the characteristics of safety and environmental protection. ;

2) On-line cleaning can be carried out with dry ice cleaning, which avoids the shielding, cooling, dismantling and sewage (sand) treatment required by traditional methods, saves drying time, and thus has higher production efficiency and less time consume;

3) The gas distributor adopted by the utility model makes the flow of dry ice particles smoother, ensuring the continuity of feeding;

4) A variety of nozzles can be replaced, making the scope of decontamination wider.

Below in conjunction with accompanying drawing, the utility model is described in detail.

Accompanying drawing is the structural representation of the utility model.

As shown in the drawings, before the cleaning work starts, open the cover handle 10 on the housing 2, pour the dry ice particles into the ice storage chamber 9 through the screen 8, push the cleaning device to the cleaning site through the roller 1 and the handrail 7, Connect the compressed air and open the compressed air inlet valve 4. When cleaning, the compressed air enters the gas distributor 5 through the oil-water separator 3, so that part of the compressed air enters the cleaning air pipe 2, and the other part of the compressed air enters the vibrating air pipe 6; the compressed air entering the vibrating air pipe 6 has two On the one hand, a certain cyclone is formed, so that the dry ice particles maintain good fluidity so as to pass through the dry ice particle outlet pipe 12 smoothly; 8 collisions, so that the dry ice particles can be adjusted to a better size. The compressed air reaches the ejector 17 through the cleaning gas outlet pipe 13 and the gas hose 15, and shoots to the surface of the cleaning object through the nozzle 16; at the same time, due to the local negative pressure of the ejector 17, the dry ice particles pass through the dry ice particle outlet pipe 12 and The medium hose 14 reaches the injector 17, mixes with the compressed air, and then shoots to the surface of the cleaning object through the nozzle 16 together. During the cleaning process, the control chamber 11 and the regulating switch 18 controlled by the general control method together control and adjust the start and stop of the entire cleaning device, as well as the impact force and flow rate of the airflow.

In the cleaning process, different nozzles can be used for different cleaning surfaces, and the nozzles 16 and injectors 17 are connected by threads, which is very convenient for assembly and disassembly. When the compressed air shoots the dry ice particles to the equipment to be cleaned at high speed, the dry ice particles freeze the dirt on the surface of the treated object to embrittlement and burst, and drill into the cracks of the dirt or penetrate between the dirt and the base material through the impact, Then sublimate immediately, and the volume increases 800 times instantaneously, thereby forcing the dirt to separate from the base material and achieving the purpose of cleaning.

Example:

The ice storage room 9 is filled with about 20kg of dry ice particles at a time. The size of the dry ice particles is 3-5mm, and the density is between 1200-1600kg/ ^m3 . The compressed air is sprayed onto the surface to be cleaned, and the injection pressure is 4-13kg/ ^cm2. , the flow rate of sprayed dry ice particles is 0.7～2.1kg/min, and the maximum air flow rate is 7.5m ³ /min. The jetting device does not require electricity to be powered.

Claims (2)

1. The dry ice blasting machine is characterized in that it includes an ice storage room [9] and a control room [11] with an upper cover screen [8] installed in the casing [2], and an ice storage room [9] connected to the dry ice particle outlet pipe [12]. The vibrating air pipe [6] is connected to the ice storage chamber [9], and the other end is connected to the gas distribution valve [5] of the purge gas outlet pipe [13]. The dry ice particle outlet pipe [12] is connected to One end of the injector [17], the cleaning gas outlet pipe [13] is connected to the other end of the injector [17] through the valve, the gas hose [15], the adjustment switch [18], and the two hoses are connected to the nozzle [16], the oil-water separator [3] that one end communicates with the gas distribution valve [5] and the other end communicates with the compressed air inlet valve [4] is housed on the casing [2]. 2. The dry ice blasting machine according to claim 1, characterized in that: a roller [1] is installed on the bottom of the casing [2], and an armrest [7] and a flip handle [10] are installed on the upper part.