EA040543B1 - DEVICE FOR FILLING AN AEROSOL CAN WITH LIQUID - Google Patents

Description

The invention relates to a device for filling liquid, such as paint, aerosol can and is used mainly for the selection of paint in auto repair shops.

The closest analogue is a device for filling an aerosol dispenser in the description of the patent US 5377724 from 1995.01.03 IPC B65B 3/12; B65B 3/00, comprising a cylinder having a lower portion of a locking aerosol can for engaging the aerosol can around the periphery of a can valve extension, the cylinder being removably mounted on a portion of the device located above the aerosol receiving site, a piston mounted in the device, and means for actuate the piston to move with the cylinder to force liquid inside the cylinder through an aerosol valve mounted in the engagement portion with the valve, the piston being set to move from a position outside and above the cylinder when it is installed in the device, and in which the cylinder has an upper open a protrusion having an inner surface that opens outward to provide an upper end of a larger diameter than the diameter of the piston to provide a progressively smaller entry for the piston into the cylinder and guide the piston into the cylinder. The protrusion has a central channel for connecting the cylinder to the channel of the aerosol valve and can be installed in the device so that when the piston moves down, the aerosol can valve opens with increasing liquid pressure due to the piston, while the aerosol can engaging assembly contains means for attaching cylinder to the outer periphery of the aerosol can nozzle valve extension, attachment means together with the cylindrical protrusion forming an annular recess for receiving the nozzle valve extension. On the body of the device for installing adjustable landing aerosol cans in the device, a socket device can be provided. The cylinder may have a recessed portion at its lower end for engagement with a recess in the central portion of the device. The cylinder may have an annular extension above the recessed portion, the extension having an annular upward drip. The attachment means may have an annular shape and further comprises a rectangular cross-section for a clamping fitting into an annular recess defined in the can by an extension of the can valve, and an inner wall of the can top, an internal thread for engagement around the periphery of the aerosol can valve.

Disadvantages: increased wear resistance of the piston, through determining the number of refills of the aerosol can, piston wear occurs due to friction against the cylinder during operation. Technical result: increased wear resistance of the piston.

The technical result in a device for filling an aerosol can with liquid, containing a stand consisting of interconnected upper level, middle level with a groove, lower level, piston, glass, at the bottom of which an outlet is located, is achieved by the fact that a pneumatic valve is attached to the upper level of the stand. a cylinder equipped with a rod with a piston attached to it, on the outer surface of which there is a piston ring clamped by a compression nut using a threaded connection. To reduce wear resistance, the piston ring is made of fluoroplast, the head part of the cup is made of non-ferrous metal, and the cup cylinder is made of stainless steel, the surface of which is honed with a roughness corresponding to Ra value from 0.32 to 0.04 µm.

Due to the new features of the claimed invention, the load on the piston is reduced, the force on the pneumatic cylinder rod is reduced, and the friction of the piston is reduced. As the fluoroplastic ring wears out, it can be easily replaced, and before replacing it, by tightening the pressure nut, it is possible to increase its diameter several times, thereby ensuring a tighter fit to the cylinder; in the analogue, when worn, it is necessary to change the piston.

The presence of essential features distinctive from the prototype makes it possible to recognize the claimed device as new.

The possibility of implementation of the proposed device in the industry allows you to recognize the device corresponding to the criterion of industrial applicability.

The essence of the invention is illustrated by drawings, which show:

in fig. 1 - a device for filling an aerosol can with liquid, side view;

in fig. 2 - a device for filling an aerosol can with liquid, a side view in section;

in fig. 3 - device for filling an aerosol can with liquid, top view;

The device for filling an aerosol can with liquid contains a stand 1, consisting of an upper level 12, a middle level with a groove 13, a lower level 14, interconnected by threaded studs 15, placed inside the lower 10 and upper 11 racks. A clamping mechanism 2 is attached to the lower level 14, made in the form of a screw pair for a snug fit of the aerosol can to the dosing bimetallic cup 3. A dosing bimetallic cup 3 is installed through the groove in the middle level groove 13, consisting of a head part 4, made mainly of non-ferrous metal, equipped with a locking ring 6, and a cylinder 16 made mainly of stainless steel, the inner surface of which is honed with Ra 0.320.04 µm to reduce the force on the rod of the pneumatic cylinder 7, which allows you to work with a lower overpressure, due to honing, piston wear is reduced 5, piston

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Claims (2)

ring 17, reduces the complexity. A pneumatic cylinder 7 with a pneumatic distributor 8 and throttles 9 is attached to the upper level 12 of the stand 1 through a bolted connection, a piston 5 is attached to the rod of the pneumatic cylinder 7, consisting of a base 18, on the outer surface of which there is a piston ring 17 made of fluoroplastic, clamped by a pressure nut 19 using a threaded connection. The piston indicator 22 is connected to the pneumatic cylinder 7 and indicates the end positions of the piston 5 in the dosing bimetallic cup 3, since the position of the piston 5 cannot be determined visually. The piston (not shown in the drawing) of the pneumatic cylinder 7 is equipped with a magnet 20, which, when interacting with the ferromagnet 21, placed on the outer wall of the pneumatic cylinder 7, moves along the piston indicator guide. Device operation. When self-tinting a scratch or rust on a car using the proposed device, paint is pumped into an aerosol can of a semi-finished product - a can with gas and a solvent as follows. A dosing bimetallic cup 3 is put on the valve of the aerosol can until it is fixed with a retaining ring 6, then the required amount of paint is poured into the dosing bimetallic cup 3. An aerosol can is placed with a dosing bimetallic cup 3 put on it in the claimed device, under the piston 5. The aerosol can is fixed by a clamping mechanism 2, which is attached to the lower level 14 of the stand 1. Air is supplied to the pneumatic actuator of the installation with a pressure of 6-10 atm. The device includes a piston 5, consisting of a base 18, on the outer surface of which there is a piston ring 17 made of fluoroplastic, clamped by a pressure nut 19 using a threaded connection, enters a dosing bimetallic cup 3, consisting of a head part 4, made mainly of colored metal, equipped with a locking ring 6, and a cylinder 16, made mainly of stainless steel, the inner surface of which is honed with Ra 0.32-0.04 microns and presses on the paint, which through the hole (not shown in the drawing) in the head part 4, in the dosing bimetallic cup 3 begins to flow into the aerosol can. The operation of the pneumatic cylinder 7 is carried out by the pneumatic distributor 8 through the throttles 9. Using the screws of the throttles 9, the speed of lowering and raising the piston 5 is regulated. cylinder 7, moves along the piston indicator guide and indicates the position of piston 5. After piston 5 has sunk to the bottom of cylinder 16, when the switch lever is pressed, piston 5 rises to its original state. An aerosol can with a dosing bimetallic cup 3 is removed from the device for filling the aerosol can with liquid. Now the paint is in the aerosol can and the can is ready to use. The paint in an aerosol can can be stored for up to several years, and any person in his garage can independently tint the car with a color chosen especially for him, without resorting to the services of a spray booth in a car service. The use of the proposed device for filling an aerosol can with liquid will increase the wear resistance of the piston. CLAIM 1. A device for filling an aerosol can with liquid, containing a stand, consisting of an upper level, a middle level with a groove, a lower level, a piston, a glass connected to each other, at the bottom of which an outlet is located, characterized in that a pneumatic cylinder is attached to the upper level of the stand equipped with a rod with a piston attached to it, on the outer surface of which there is a piston ring clamped by a pressure nut using a threaded connection. 2. The device according to claim 1, characterized in that to reduce wear resistance, the piston ring is made of fluoroplastic, the head of the cup is made of non-ferrous metal, and the cup cylinder is made of stainless steel, the surface of which is honed with a roughness corresponding to a Ra value of 0.32 up to 0.04 µm. -