RU197642U1 - TECHNOLOGICAL MIXER WITH UNLOADING UNIT - Google Patents

Abstract

Technological mixer with unloading unit refers to unloading devices for use in the technological process of preparing drinking water and wastewater treatment. The device contains an electric motor connected to the gearbox, the output of which is fixed to the unloading unit, and the output shaft of the gearbox is connected to the cantilever shaft, characterized in that the coupling unit connected to the output of the gearbox is fixed in the unloading unit, fixed at one end to the shaft, which is connected to the other end through a rigid connection connected to the cantilever shaft. The shaft inside the discharge unit is mounted on bearings.

Description

The utility model relates to unloading devices for use in the technological process of preparing drinking water and wastewater treatment.

From literature sources are known apparatuses for mixing liquids [1-5].

Known mixing device containing a shaft with attached blades [6] which is designed to achieve improved mixing quality.

Also known is a prototype industrial mixer with a motor gearbox manufactured by PKF Tula Machines LLC [7] containing (Fig. 1a) an electric motor, a gearbox coupling, a gearbox, an unloading unit, a rigid connection of the gearbox output shaft with a cantilever shaft and a cantilever shaft with working body

The considered mixer operates in the flow of the working medium, where radial alternating loads on the cantilever shaft are caused by a constantly moving flow. Due to the small shoulder (distance) between the bearings of the output shaft and the disproportionately large shoulder of the cantilever shaft, the drawback of the existing scheme is the strong loading of radially alternating loads of both the bearings and the gear housing, which leads to frequent failure of the bearings of the output shaft of the gearbox and fatigue failure of the gearbox .

The technical result of the proposal is to increase the reliability of the product

This result is achieved by unloading the bearings and the gear housing from stresses, when the output shaft of the gearbox and the gearbox itself are unloaded from alternating radial loads by moving the unloading unit connected to the gearbox through the clutch on one side, and by means of a rigid connection to the cantilever shaft on the other hand.

The proposed solution is shown in FIG. 1b, where it is indicated: electric motor (1), gearbox coupling (2), gearbox (3), coupling of the unloading unit (4), unloading unit (5), rigid connection (6) of the output shaft of the gearbox with the cantilever shaft, cantilever shaft (7 ), shaft (8), bearings (9).

With this arrangement, radial alternating loads from the cantilever shaft (7) through the unloading unit (6) are not transferred to the gearbox (3), but are loaded onto the clutch (4) thereby preserving both the gearbox itself and its bearings from premature wear and destruction. The unloading unit, having a shoulder distance between its bearings (9) greater than the shoulder between the bearings of the gearbox, accepts alternating radial loads on itself.

Used information sources of the prior art

1. Vasiltsov E.A., Ushakov V.G. Apparatus for mixing liquid media: a reference guide. - L .: Mechanical engineering. 1979.- 272 ill.

2. Braginsky L.N. Mixing in liquid media. L .: Chemistry, 1984. 336 p., Ill.

3. Strenk F. Stirring and apparatuses with stirrers. 1971 Per. from polish under the editorship of Schuplyak I.A. - L., "Chemistry", 1975 - 384 p.

4. Belyaev V.M., Mironov V.M., Tikhonov V.V. Calculation and design of the main equipment of the industry. Part 1. Devices with mechanical mixing devices. Tutorial. - Tomsk, TPU, 2008 .-- 92 s.

5. Guildenblatt I.A., Borisov G.S., Grigoryev V.V., Myagkov L.V., Ryabov A.V. Apparatus for hydromechanical and thermal processes of chemical technology. Tutorial. - Moscow, Moscow Art Theater. DI. Mendeleev, 1981.- 80 p.

6. RF patent for utility model No. 31109 "Paddle mixer". // Bulletin dated 20.07.2003 No. 20.

7. Website of PKF Tula Mashiny LLC. Industrial mixers Electronic resource URL: https://tulmesh.ru/. Date of treatment March 21, 2019

Claims (1)

A technological mixer with an unloading unit, comprising an electric motor connected by means of a coupling to the input shaft of the gearbox, the casing of which is fixed to the unloading unit, and the output shaft of the gearbox is connected to the cantilever shaft, characterized in that an additional coupling connected to the output shaft of the gearbox is connected with a shaft mounted on bearings inside the discharge unit, which is connected via a rigid connection to the cantilever shaft.

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