RU2617102C1 - Device for drying and cleaning products - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: loading mechanism is designed as a drive, which is a hollow cylinder with the possibility of the piece goods load into it, and a pusher piece feeding articles from the bottom of storage in the working area. Rotating mechanism is designed as a mandrel for installing products and cleansed engine speed is kinematically associated with the mandrel. The apparatus further has a product on the mandrel setting mechanism consisting of a circular plate with a channel and air distribution nozzles for directing compressed air with a high air pressure on the surface to be cleaned, and a spring-loaded pusher slidably mounted thereon products under pressure of compressed air onto the mandrel.

EFFECT: removing from the surface of the product not only moisture but also the technological pollution, improving the quality of cleaning, ensuring the drying of the product.

1 ex, 3 dwg

Description

The invention relates to mechanical engineering, and in particular to devices for cleaning technological impurities and drying the surfaces of rotation parts such as rings of bearings, axles, shafts, bushings, gears.

Known devices for ultrasonic cleaning of products [certificate RU for utility model No. 5122, patent RU for invention No. 2181635] containing a process bath and a source of ultrasonic vibrations.

Also known are devices for the jet cleaning of parts from contaminants in a liquid medium [SU copyright certificate for invention No. 1781322, SU copyright certificate for invention No. 1549619] or in a liquid stream [SU copyright certificate for invention No. 1586799, SU copyright certificate for invention No. 1733128, SU copyright certificate for invention No. 1736638, RU patent for invention No. 2367527, RU certificate for utility model No. 15306]. The above devices work as follows: the product is placed in a bath with a washing liquid, then the liquids report movement relative to the product, under the action of which the product is cleaned of contaminants.

A common disadvantage of these devices is the need for subsequent lengthy and energy-intensive drying of products.

The closest in technical essence and the achieved effect to the claimed is a device for cleaning and drying products, having a mechanism for imparting rotation to the product with the ability to clean it under the action of centrifugal forces [RU patent for invention No. 2559960]. The device comprises a loading funnel, into which the products to be cleaned are loaded, a centrifuging mechanism, which is provided with a rotational part configured to remove free liquids present on the surface of the products by centrifugal force.

The disadvantages of this device are limited technological capabilities, since it can only be used to clean solid granules from liquids, and the possibility of storing dirt and moisture between granules, which reduces the quality of cleaning and drying of products.

The task of the invention is to improve the quality of cleaning products in the form of bodies of revolution.

This object is achieved in that in a device for cleaning and drying products having a mechanism for loading products and a mechanism for imparting rotation to the product with the ability to clean it under the action of centrifugal forces, the loading mechanism is made in the form of a drive, which is a hollow cylinder with the possibility of piece loading into it products, and a pusher supplying pieces of products from the bottom of the drive to the working area, the rotation mechanism is made in the form of a mandrel for installing the product being cleaned and the rotation motor, kinematically ki associated with the mandrel; additionally has a mechanism for installing the product on the mandrel, consisting of a round plate with an air distribution channel and nozzles for directing high air pressure of compressed air to the surface to be cleaned, and a spring-loaded ejector with the ability to displace the product installed on it under the pressure of compressed air on the mandrel.

The technical result is the removal from the surface of the product not only moisture, but also technological contaminants and ensure drying of the product.

Since the device is equipped with a cylindrical drive and a mandrel, this allows it to be used for cleaning and drying products in the form of ring parts, which expands its technological capabilities. And since the mandrels of the product give rotation, this allows dirt and moisture to freely leave the surface to be cleaned, which improves the quality of cleaning and drying. The presence of a multi-jet with nozzles supply mechanism for compressed air to the surface of the product allows to improve the quality of cleaning the surface of the product under the pressure of air jets and ensure its high-quality drying.

The invention is illustrated by figures, where in FIG. 1 presents a General view of the inventive device, FIG. 2 is the same, but a top view, in FIG. 3 - product loading mechanism, rotation mechanism and mechanism for installing the product on the mandrel.

In FIG. 1-3 positions 1-12 are indicated:

1 - bed;

2 - pneumatic cylinder;

3 - pusher;

4 - bottom plate;

5 - top plate;

6 - drive;

7 - multi-jet mechanism;

8 - rotation motor;

9 - an intermediate shaft;

10 - mandrel;

11 - ejector;

12 - protective plates.

A pneumatic cylinder 2 is fixed on the device bed 1, transmitting movement along the plane of the bed 1 to the pusher 3, the lower plate 4, the upper plate 5 and the rotation motor 8. On the upper plate 5, a drive 6 is mounted, made in the form of a hollow cylinder, inside of which one piece is installed one above the other products in the form of thrust bearing rings. Between the lower end of the drive 6 and the surface of the lower plate 4, a gap is made through which the product can be freely pushed. The rotation motor 8 through an elastic coupling is connected to the intermediate shaft 9. At the end of the intermediate shaft 9 is fixed mandrel 10, designed to install the product. The multi-jet mechanism 7 is made in the form of a circular disk attached to the bottom of the upper plate 5 and having an air annular channel connected to a source of compressed air. The diameter of the air annular channel is equal to the diameter of the surface being cleaned. Evenly along the circumference of the air annular channel in the direction along the axis of the circular disk, holes are made that play the role of nozzles directing the air flow to the surface to be cleaned. The pusher 11 is made in the form of a spring-loaded ring that installs the product after processing along the upper plane of the lower plate 4. The protective plates 12 are made of elastic material and are installed so that they do not interfere with the movement of the product along the upper plane of the lower plate 4.

The operation of the device is as follows. In the drive 6 one above the other install products in the form of bearing rings. Then the pneumatic cylinder 2 is turned on, which in the initial version is in the extreme left position. The movement of the rod of the pneumatic cylinder 2 causes movement along the upper plane of the lower plate 4 of the pusher 3. The pusher 3 pushes the product located in the gap between the lower end of the drive 6 and the upper plane of the lower plate 4 in the working area so that the product is mounted on its ejector axis 11 on the ejector 11 along the axis of the mandrel 10. If there was a previously processed product in the working area, then it is pushed by the newly supplied product from the working area outside the device. Compressed air freed from moisture is supplied into the annular groove of the multi-jet mechanism 7, which is supplied through the axial holes, which play the role of nozzles, to the surface of the product under pressure. Under the influence of air pressure, the product compresses the springs of the ejector 11 and is mounted on the mandrel 10. Special slots made on the mandrel 10 (not shown) prevent the product from scrolling relative to the mandrel 10. The pneumatic cylinder 2 together with the pusher 3 returns to its original position. At this moment, the rotation motor 8 is turned on, which drives the intermediate shaft 9 and the mandrel 10. Thus, the product receives rotation.

Due to the rotation of the product under the action of centrifugal force, technological impurities and moisture are freely removed from the surface being cleaned. The cleaning process is significantly activated by the air pressure supplied from the nozzles of the multi-jet mechanism 7. In addition to cleaning the surface of the product, it is dried with air from moisture residues.

After processing, the rotation motor 8 is turned off, the air supply to the multi-jet mechanism 7 is stopped, and the ejector 11 raises the product to the level of the upper plane of the lower plate 4. The cycle is repeated.

Example. In experimental conditions, a device was developed for cleaning and drying the thrust bearing rings 1118-2902840 used in the upper support of the front suspension strut of VAZ Kalina, Priora, Grant, etc. The diameter of the raceway being cleaned was d = 70 mm, width the raceway being cleaned h = 5 mm, the outer diameter of the rings is 86 mm, the inner diameter is 68 mm. On the outer surface of the plastic casing of the rings, stiffening ribs are made.

The diameter of the drive opening was set equal to 87 mm, so that the processed rings freely moved under their own weight along the drive opening. The position of the pusher was adjusted so that in the extreme right position of the rod of the pneumatic cylinder, the product was installed along the axis of the mandrel. When the pusher was pulled to the leftmost position, it ensured the installation of the next ring on the upper plane of the lower plate.

The rotation motor was equipped with a frequency converter, which makes it possible to regulate its rotation frequency. The engine speed was set to 900 rpm. The engine speed can be adjusted based on experimental data. The compressed air pressure in the pneumatic system is set equal to 5 atm. The cross-sectional area of the annular air channel of the multi-string mechanism was set equal to 100 mm ² , the diameter of the nozzles was 2 mm, and the number of nozzles was 10. It is easy to determine that the jet of air leaving each nozzle pressed against the surface to be cleaned with a force of 1.6 N. Then all 10 nozzles, respectively, pressed on the product with a force of 16 N. In this case, the force of the spring pressing the ejector was set equal to 6 N. This is much less than the weight of the product and the weight of the ejector ring. Without taking this weight into account, the ring was pressed against the mandrel with a force of 10 N under the action of jets of air flowing from the nozzles of the multi-jet mechanism, which is quite enough. To prevent the product from turning on the mandrel, protrusions (not shown) were made at its end, which were located between the stiffeners of the product casing and, when the mandrel was rotated, engaged with them.

Under the indicated processing conditions, the machine processing time did not exceed 5 seconds, and the cycle time was no more than 10 seconds.

If the engine speed is reduced to 300 rpm, the main processing time will increase to 15 seconds, and the cycle time will be about 20 seconds.

With this small changeover, not only parts such as thrust bearing rings, but also rings of all other types of bearings — radial and angular contact ball bearings, rollers, needle, spherical, spherical bearings, and many other rotation parts — shafts, can be cleaned and dried. , bushings, axles, gears, etc.

The technical and economic effectiveness of the proposed device is as follows:

1. Improving the quality of cleaning and drying the surface of bodies of revolution due to the simultaneous impact on the surface being cleaned of two means - rotation of the part and exposure to compressed air;

2. Improving processing productivity due to the high intensity of cleaning

3. The simplicity of the design of the device.

Claims (1)

A device for cleaning and drying products, having a mechanism for loading products and a mechanism for imparting rotation to the product with the possibility of cleaning it under the action of centrifugal forces, characterized in that the loading mechanism is made in the form of a drive, which is a hollow cylinder with the possibility of piece-wise loading of products into it, and a pusher supplying a piece of product from the bottom of the drive to the working area, the rotation mechanism is made in the form of a mandrel for installing the product to be cleaned and a rotation motor kinematically connected to the frames Coy additionally has a mechanism for installing the product on the mandrel, consisting of a round plate with an air distribution channel and nozzles for directing high air pressure of compressed air to the surface to be cleaned, and a spring-loaded ejector with the ability to displace the product installed on it under the pressure of compressed air on the mandrel.

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