RU186263U1 - VIBRATING EASTER - Google Patents

Abstract

Vibration ejector is designed to grind material samples to a finely dispersed state in a batch mode. The technical result consists in increasing manufacturability, namely, in reducing the weight and reducing the size. The vibration eraser contains a base 1 mounted on it through shock absorbers 17, plate 2, cover 7, electric motor 3, unbalanced vibrator 19 of circular vibrations, platform 5 on springs 10 with cups 6 assembled vertically mounted on it, containing bowl 20, grinding body, cover 22 and the seal 23, pressure devices 4 for fixing the bowls 6 on the platform 5, made on the plate handle 8 and the handle 9. In this case, the pressure device 4 is made eccentric. The grinding organ of the bowls 6 are balls 21. The number of bowls 6 is six. The bowls can be made of ceramics, tungsten carbide or zirconium dioxide. A bowl made of tungsten carbide or zirconia additionally contains a pad 24. 3 zp f-ly, 4 ill.

Description

Vibration ejector is designed to grind material samples to a finely dispersed state in a batch mode. The proposed eraser relates to laboratory-class equipment, which is used in various industries, including: mining, metallurgy, construction, pharmaceutical and chemical, as well as for experimental work in universities and research institutes.

There are various technical solutions in this area.

So, the RU patent for utility model No. 177928 (IPC В02С 19/16, published on March 16, 2018) for a vibration eraser that contains a frame with a plate, an electric motor mounted on a frame bracket, a half coupling mounted on an electric motor shaft, and an unbalance installed under the platform with springs, a cover with overlays and a latch, a control panel, an end microswitch, a bowl assembly with a cover and a roller; handles, a bottom and a shell are introduced into the bowl assembly. In addition, at the upper end of the platform there is a groove for installing the bowl assembly, which is fixed by a clip fixed to the bracket and clamped by the latcher. In this case, the bottom and the shell of the bowl are bolted. And the lid of the bowl fits snugly on the shell due to the seal.

The disadvantages of the known solutions are:

- the possibility of simultaneous grinding of not more than one sample of the material;

- large mass and dimensions of the product;

- the possibility of grinding samples with a volume of at least 500 cm ³ .

Known RU patent for utility model No. 161860 (IPC В02В 7/00, published. 05/10/2016) for a laboratory vibration eraser, which includes a housing consisting of a frame with a lid, an electric motor, a platform, on top of which a fixed assembly is mounted, and on the bottom unbalance in the bearing unit, fixed on the axis of the platform, the frame consists of a base on which a plate with a bearing unit is installed through the shock absorbers, an electric motor and a platform on springs are placed on the plate. In addition, a V-belt drive has been introduced, transmitting rotation from the electric motor to the platform unbalance through the flap clutch and the drive shaft. The bowl assembly is fixed to the platform using an eccentric clamping device, the V-belt drive has a tension bar.

The disadvantages of the known solutions are:

- the possibility of simultaneous grinding of not more than one sample of the material;

- grinding the sample with a volume of at least 20 cm ³ .

The closest set of essential features to the proposed solution is the eraser IVP-100, according to RU patent for utility model No. 74830 (IPC V02C 19/16, published. 07.20.2008). The vibratory grinder, adopted for the prototype, contains an unbalanced circular vibrator, a vibrating table with grinding cups vertically mounted on it, each of which has a grinding body in the form of a rod with a through hole tapered tapering downward, and clamping devices for fixing grinding cups on the grinder vibrating table . The upper part of the rod has a cylindrical cavity for accommodating crushed material, passing into a conical hole, the lower working part of the rod has a convex coaxial spherical surface, and the bottom of the grinding cup has a concave coaxial spherical surface, the radius of which exceeds the radius of the spherical surface of the rod.

The main disadvantages of the prototype:

- inconvenience of work with the number of samples less than 14;

- large dimensions and mass of the product;

- high power consumption;

- a threaded bowl fastening device does not guarantee their reliable fixation.

Thus, the technical problem that currently exists is the lack of easy-to-use and economical vibration abrasors designed to abrade a small number of samples (from 1 to 6).

The creation of the proposed technical solution is aimed at solving this problem, namely, the creation of an improved design of a high-tech vibration eraser, which ensures operational and reliable operation of the device.

The technical result consists in improving operational characteristics, namely, in reducing weight and reducing dimensions while increasing usability.

The technical result is achieved by the fact that the vibration eraser containing the base mounted on it through the shock absorbers plate, cover, electric motor, unbalanced vibrator of circular oscillations, a platform on springs with vertically mounted bowls in the assembly, each of which contains a bowl, grinding organ, cover and the seal, as well as clamping devices for fixing the bowls on the platform, according to the utility model, comprises a handle and handles placed on the plate, while the clamping device is made eccentric. The grinding organ of the bowls are balls.

The use of balls rather than rollers of complex configurations gives the following advantages:

- when the balls wear, the grinding efficiency decreases less than when using rollers;

- since the balls are a standard product, their purchase is greatly simplified;

- the cost of balls is much lower than the cost of homemade grinding organs.

The presence of handles and handles on the stove can greatly simplify the process of transferring and installing the eraser. The eccentric clamping device allows for a certain clamping force.

Additional differences of the proposed utility model:

- the number of bowls is six;

- the bowl is made of ceramic, or tungsten carbide, or zirconium dioxide,

- bowls made of tungsten carbide or zirconia contain a pad;

- when the pad is worn, it is enough to replace only it, and not the entire cover.

The essence of the utility model is illustrated by the following graphic material:

FIG. 1, which shows a General view of the proposed vibration eraser;

FIG. 2, which shows a section of an eraser;

FIG. 3, which shows the sections of the bowl assembly: a) a steel bowl; b) a bowl of WC tungsten carbide or zirconia ZrO ₂ ;

FIG. 4, which shows a top view of the eraser.

In the proposed eraser grinding occurs due to abrasion - simultaneous deformation of compression and shear. The size of the crushed material depends on the operating time of the eraser and the physical properties of the material.

The bowl can be made of steel (standard material), tungsten carbide WC or zirconia ZrO ₂ .

The eraser consists of a base 1, a plate 2, an electric motor 3, an unbalanced vibrator 19 of circular oscillations, a platform 5, six bowls 6 assembled and a cover 7.

A platform 5 is mounted on the plate 2 through the springs 10 with the clamping device 4 fixed on it and the cups 6 assembled, each of which consists of a cup 20 (Fig. 3. a, b), balls 21, cover 22 and seals 23.

Rotation from the electric motor 3 is transmitted through a belt drive 11 to the drive shaft 12, which is mounted on the plate 2 in the bearing assembly 13. From the shaft, the torque is transmitted through the elastic flap clutch 14 to the unbalanced vibrator 19, mounted on the axis 15 of the platform 5 in the bearing assembly 16.

Plate 2 is installed on the base 1 through shock absorbers 17, which reduce vibration transmitted to the supporting surface.

A belt tensioner 18 is provided for tensioning the V-belt transmission belt.

For installation and ease of movement of the eraser, one handle 8 and two handles 9 are provided.

Bowls made of tungsten carbide or zirconia additionally contain pads 24.

Operating principle:

the platform of the vibration eraser (together with the assemblies 6 fixed on it) performs circular oscillations in the horizontal plane. The material is abraded between the balls 21, the walls, the lid 22 and the bottom of the bowl 20.

Advantages of the proposed solution over known devices:

- the eccentric pressing device 4 provides a certain pressing force of the bowl to the platform 5 (in the threaded pressing device 4 (prototype) the force depends on the operator);

- the manufacture of a bowl of ceramic or tungsten carbide, or zirconium dioxide eliminates the grinding of iron of the working bodies in the sample, and also allows the grinding of harder materials;

- due to the reduction in the mass of the dynamic part, it is possible to use an electric motor of lower power (0.37 kW instead of 0.55 kW), which saves energy;

- when grinding less than 6 samples, eliminating the need to install special weights instead of bowls or bowls with residual material, it is possible to simply install empty bowls, since their mass is selected so that the absence of material and balls in them does not affect the pattern of vibrations of the entire platform.

- reducing the size and weight of the eraser (485 × 400 × 290 mm and 55 kg instead of 700 × 552 × 485 mm and 130 kg), which makes it possible to install the eraser on a standard laboratory bench, rather than on a special support cabinet, while the handle and handles provide ease of installation and movement of equipment.

Thus, thanks to the proposed technical solution, the manufacturability of the vibration eraser is increased, which contributes to the operational and reliable operation of the device.

Claims (4)

1. Vibration eraser containing a base mounted on it through shock absorbers, a plate, a cover, an electric motor, an unbalanced vibrator of circular oscillations, a platform on springs with assembled cups vertically mounted on it, each of which contains a cup, grinding organ, cover and seal, clamping devices for fixing the bowls on the platform, characterized in that it contains a handle and handles located on the plate, while the clamping device is made eccentric, and the grinding organs of the bowls are balls. 2. The eraser according to claim 1, characterized in that the number of bowls is six. 3. The eraser according to claim 1, characterized in that the bowl is made of zirconia or tungsten carbide. 4. The eraser according to claim 3, characterized in that the bowl assembly, made of tungsten carbide or zirconia, contains an overlay.

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