RU216423U1 - HORIZONTAL MIXER FOR MIXING POOL COMPONENTS - Google Patents

Abstract

The utility model relates to devices designed for mixing bulk components and enriching the resulting mixture with various additives, and can be used in agriculture, food, chemical and other industries. The horizontal mixer for mixing bulk components contains a U-shaped mixing chamber with a loading pipe located in the center in the upper part of the mixing chamber and an unloading pipe located in the center of the bottom of the mixing chamber, a working body, which is a shaft, on which are sequentially fixed at an angle relative to each other, two identical mixing sections, with each mixing section representing two sets of tape working blades symmetrical with respect to the shaft axis, each of which consists of two mutually oppositely wound tape spirals, one of which is external and wound over a large diameter, the other is internal and wound along a smaller diameter, the ends and the middle part of which are fixed on spokes perpendicular to the axis of the shaft, and a scraper in the form of a bar with a rubber pad fixed at the ends of the extreme spokes, and the bar is set at an angle so that the end of the bar at the periphery of the body moves ahead of the end pl anchors at the center of the body, and the rubber pad of the bar mates with the body of the mixing chamber. On the shaft of the working body of the mixing sections, tape turns of the screw are fixed, directed to the center of the mixing chamber, in the upper part of which centrifugal-type nozzles are installed above the mixing sections, communicated through the main pipeline equipped with a flow meter and pressure gauge, with a supply tank with a pump and a discharge pipeline located in it excess pressure. 3 ill.

Description

The utility model relates to devices designed for mixing bulk components and enriching the resulting mixture with various additives, and can be used in agriculture, food, chemical and other industries.

Known horizontal mixer containing a mixing chamber U-shaped in cross section, the working body in the form of a shaft with blades mounted on two opposite helical lines, each blade is equipped with a scraper made in the form of a plate of elastic material, the width of which is equal to the width of the blade, and the departure of the scraper 1.02...1.04 times the radius of the cylindrical surface of the mixing chamber [US Pat. 99350 Russian Federation, IPC В04F 7/04. Horizontal mixer / Chernetskaya N.A., Shaposhnikov Yu.A., Voinash A.S.; applicant and patent holder State Educational Institution of Higher Professional Education "Altai State Technical University. I.I. Polzunov" (AltSTU). - No. 2010124463/05; dec. 06/11/2010; publ. 20.11.2010, Bull. No. 32].

The well-known horizontal mixer due to the use of a working body in the form of a shaft with blades installed along two opposite helical lines has a large specific metal content and bulky design and, accordingly, a high cost of its manufacture, which characterizes the low economic efficiency of using the mixer.

When performing the technological process with this horizontal mixer, the process of mixing the feed components in the mixing chamber of a U-shaped cross section mainly involves areas along the blades, which are installed along two opposite helical lines. As a result, when feed components are fed into the U-shaped mixing chamber in cross section, the areas along the blades, which are installed along two opposite helical lines, are mainly involved. As a result, when feed components are fed into the mixing chamber of a U-shaped cross section in small doses, they are not evenly distributed throughout the entire volume of this chamber of the horizontal mixer. This circumstance significantly reduces the quality of the prepared feed due to its high coefficient of heterogeneity, which worsens its palatability by farm animals.

The closest in terms of technical solution and the achieved result to the proposed utility model is a horizontal mixer containing a U-shaped mixing chamber with a loading nozzle located in the center in the upper part of the mixing chamber, and an unloading nozzle located in the center of the bottom of the mixing chamber, a working body, representing a shaft on which at least two identical mixing sections are sequentially fixed at an angle relative to each other, with each mixing section representing two sets of tape working blades symmetrical with respect to the axis of the shaft, each of which consists of two mutually oppositely wound tape spirals, one of which is external and wound along a large diameter, the other is internal and wound along a smaller diameter, the ends and the middle part of which are fixed on spokes perpendicular to the axis of the shaft, and a scraper in the form of a bar with a rubber pad fixed at the ends of the extreme spokes, and the bar mustache set at an angle so that the end of the bar at the periphery of the body moves ahead of the end of the bar at the center of the body, and the rubber pad of the bar is mated with the body of the mixing chamber [Pat. 125884 Russian Federation, IPC В01F 7/00. Horizontal mixer / Sergeev A.G., Garinova T.A., Stupin I.V.; applicant and patent holder Doza Agro Limited Liability Company. - No. 2012142027/05; dec. 02.10.2012; publ. 03/20/2013, Bull. No. 8] - prototype.

Execution in the known device of the working body in the form of a shaft, on which at least two identical mixing sections with a set of tape working blades are successively fixed at an angle relative to each other, significantly reduces the metal consumption of the structure compared to its counterpart.

However, in the mixing chamber of the known device, the feed components are actively mixed only in the U-shaped area of the wall of the mixing chamber due to the movement of the external tape spirals in one direction, and the internal ones in the opposite direction. In the area of the shaft of the working body, the mixing of the feed components is not carried out, due to which a stagnant zone is formed in the center of the mixing chamber, which causes a decrease in the time throughout the volume of the mixing chamber for the formation of a homogeneous structure of the finished product, which is necessary to obtain high-quality feed for agricultural animals. This circumstance reduces the capacity (productivity) of the horizontal mixer.

Further, a scraper in the form of a bar with a rubber pad fixed at the ends of the extreme spokes and set at an angle so that its end at the periphery of the mixing chamber body moves ahead of the end of the bar at the center of the mixing chamber body, ensures the movement of the finished product towards its center for unloading through the unloading pipe only along the bottom of the U-shaped mixing chamber. Intensive movement of the finished product from the side walls of the mixing chamber in the direction of its center in the area of the shaft of the working body of the mixing sections does not occur. As a result, the time for complete unloading of the prepared feed from the mixer through the unloading pipe located in the center of the bottom of the mixing chamber is significantly increased, which also entails an increase in the specific energy consumption of the process.

In addition, in a horizontal mixer, the lack of a device for metered supply and control of the volume of liquid feed components supplied to the mixing sections does not allow obtaining a high-quality homogeneous feed product to improve its palatability by farm animals or a feed product of the required composition according to the group characteristics of animals: for example, for calves, dairy heifers or fattening bulls.

The essence of the proposed utility model lies in the fact that a well-known horizontal mixer containing a U-shaped mixing chamber with a loading nozzle located in the center in the upper part of the mixing chamber and an unloading nozzle located in the center of the bottom of the mixing chamber has a working body, which is a shaft on which at least two identical mixing sections are sequentially fixed at an angle relative to each other, with each mixing section being two sets of tape working blades symmetrical with respect to the shaft axis, each of which consists of two mutually oppositely wound tape spirals, one of which are external and wound along a large diameter, the other is internal and wound along a smaller diameter, the ends and the middle part of which are fixed on spokes perpendicular to the axis of the shaft, and a scraper in the form of a bar with a rubber pad fixed at the ends of the extreme spokes, and the bar is installed at an angle so that horse The center of the bar at the periphery of the body moves ahead of the end of the bar at the center of the body, and the rubber pad of the bar is mated with the body of the mixing chamber, on the shaft of the working body of the mixing sections, the screw turns are fixed, directed to the center of the mixing chamber, in the upper part of which nozzles are installed above the mixing sections centrifugal type, communicated through a main pipeline equipped with a flow meter and pressure gauge, with a supply tank with a pump placed in it and an overpressure relief pipeline.

As a result of the analysis of literary sources, no identical implementation of the proposed development was found. At the same time, the features that are distinctive from the prototype give the claimed combination new properties, manifested in a positive effect.

The installation of mixing sections of the auger belt turns on the shaft of the working body ensures active mixing of the feed components in the area of the mixer shaft, which eliminates the formation of a stagnant zone in the area of the center of the mixing chamber and reduces the time for the formation of a homogeneous structure of the finished product, which is necessary for obtaining high-quality feed for farm animals.

In addition, the use on the shaft of the working body of the mixing sections of the tape turns of the auger directed towards the center of the mixing chamber also helps to reduce the time for complete unloading of the prepared feed from the mixer through the unloading pipe located in the center of the bottom of the mixing chamber, due to the intensive movement of the finished product from the side walls mixing chamber in the direction of its center, which also achieves a reduction in the specific energy consumption of the process.

The use of centrifugal-type nozzles installed above the mixing sections allows the supply of liquid feed components evenly and in layers throughout the volume of the mixing chamber, causing a homogeneous feed product to be obtained by mixing with other feed components, significantly improving its palatability by farm animals.

The connection of centrifugal type nozzles through the main pipeline equipped with a flow meter allows you to control the required volume of liquid feed components supplied to the mixing sections to obtain a homogeneous feed product of the required composition according to the group characteristics of animals: for example, for calves, dairy heifers or fattening bulls.

The equipment of the main pipeline with a pressure gauge allows you to control the operating pressure in the system for supplying liquid feed components to the mixing sections and monitor the clogging of centrifugal-type nozzles, which eliminates the receipt of a poor-quality feed product.

If the horizontal mixer has a supply tank with a pump placed in it, the feed is supplied through the main pipeline through centrifugal type nozzles to the mixing sections of liquid feed components of a constant concentration, thereby obtaining a feed product of the required composition.

The excess pressure relief pipeline located in the supply tank allows extending the service life of the main pipeline and the pump by eliminating hydraulic shocks and relieving pressure when it rises to critical values in the system for supplying liquid feed components to the mixing sections.

As a result, during the operation of the proposed device, a positive effect is achieved that exceeds the effect of the prototype. The new combination of the proposed device, which provides a positive effect, has significant differences.

In FIG. 1 shows a general diagram of a horizontal mixer, Fig. 2 is a general view of the working body of a horizontal mixer, in Fig. 3 – general view of the horizontal mixer.

The horizontal mixer contains a mixing chamber 1 U-shaped with a loading pipe 2, located in the center in the upper part of the mixing chamber 1, and an unloading pipe 3, located in the center of the bottom of the mixing chamber 1, the working body, which is a shaft 4, on which are sequentially fixed at an angle relative to each other, at least two identical mixing sections 5 and 6. Each mixing section 5 and 6 is two sets of tape working blades symmetrical with respect to the axis of the shaft 4. A set of tape working blades consists of two mutually oppositely wound tape spirals, one of which is external 7 and wound along a large diameter, the other is internal 8 and wound along a smaller diameter, the ends and the middle part of which are fixed on spokes 9 perpendicular to the axis of the shaft 4, and a scraper 10 in the form of a bar with a rubber pad fixed at the ends of the extreme spokes 9. The rubber pad of the scraper 10 mates with the body of the mixing chamber 1. On the shaft 4 of the working body of the mixing sections 5 and 6, tape turns 11 of the auger are fixed, which are directed to the center of the mixing chamber 1. The working body, representing the shaft 4, is driven by a gear motor 12. In the upper part of the mixing chamber 1 above the mixing sections 5 and 6, centrifugal type nozzles 13 and 14 are installed, connected through the main pipeline 15, equipped with a flow meter 16 and a pressure gauge 17, with flow tank 18 with a pump 19 placed in it and a pipeline 20 for relieving excess pressure eniya. The main pipeline 15 is equipped with a shut-off valve 21.

The horizontal mixer works as follows.

The gear motor 12 is turned on to drive the working body representing the shaft 4 into rotation. Then, through the loading pipe 2, the mixed feed components are fed into the center of the mixing chamber 1. Simultaneously with this pump 19 from the supply tank 18 through the main pipeline 15 through the nozzles 13 and 14 centrifugal type, liquid feed components are supplied to the mixing sections 5 and 6. The operating pressure in the main pipeline 15 is controlled by a pressure gauge 17. When nozzles 13 and 14 of the centrifugal type are clogged, excess pressure is released from the main pipeline 15 by the flow of liquid feed components through the pipeline 20 back into the consumable container 18. In the mixing chamber 1, the feed components are mixed by moving the outer 7 tape spirals in one direction, and the inner 8 - in the opposite direction. In the area of the shaft 4 of the working body, the mixing of the feed components is carried out by tape turns 11 of the auger. As a result, intensive and uniform mixing of the feed components occurs throughout the volume of the mixing chamber 1. Tape turns 11 of the auger mounted on the shaft 4 of the working body move the finished product from the side walls of the central region of the mixing chamber 1 towards its center. The scraper 10 in the form of a bar with a rubber pad fixed at the ends of the extreme spokes 9 and installed at an angle so that its end at the periphery of the mixing chamber body 1 moves ahead of the end of the bar at the center of the mixing chamber body 1, ensures the supply of the finished product along the bottom of the mixing chamber 1 in the direction of its center, where the unloading pipe 3 is located. After the end of the mixing cycle, the flow of liquid feed components into the mixing sections 5 and 6 is blocked by the shut-off valve 21, and then the valve of the discharge pipe 3 opens and the finished mixture enters the bags for subsequent transportation and feeding of the feed animals.

Tests of the developed horizontal mixer showed that under the same operating conditions of the prototype and the claimed utility model (the composition of the multi-component mixture, the equal loading volume of the mixer and the achieved homogeneity of the feed mixture of 95%), the proposed horizontal mixer has a total cycle time for the process of mixing feed components is reduced by 22%, and the unloading time of the finished product is reduced by 30%, as a result of which the throughput (productivity) is increased by 24%. At the same time, the proposed horizontal mixer reduces the specific energy consumption for the preparation of 1 ton of feed product by 24%.

The advantage of the proposed utility model in comparison with the prototype is to reduce the time and increase the efficiency of mixing feed components, as well as increase throughput (productivity) and reduce specific energy consumption in the preparation of feed for farm animals.

Claims (1)

Horizontal mixer for mixing bulk components, containing a U-shaped mixing chamber with a loading nozzle located in the center in the upper part of the mixing chamber and an unloading nozzle located in the center of the bottom of the mixing chamber, a working body, which is a shaft, on which at an angle relative to each other, two identical mixing sections, with each mixing section being two sets of tape working blades symmetrical with respect to the shaft axis, each of which consists of two mutually oppositely wound tape spirals, one of which is external and wound over a large diameter, the other is internal and wound along a smaller diameter, the ends and the middle part of which are fixed on spokes perpendicular to the axis of the shaft, and a scraper in the form of a bar with a rubber pad fixed at the ends of the extreme spokes, and the bar is set at an angle so that the end of the bar at the periphery of the body moves ahead end straps at the center of the body, and the rubber lining of the strap is mated with the mixing chamber body, characterized in that on the shaft of the working body of the mixing sections, the screw turns are fixed, directed to the center of the mixing chamber, in the upper part of which centrifugal type nozzles are installed above the mixing sections, communicated through a main pipeline equipped with a flow meter and a pressure gauge, with a supply tank with a pump placed in it and an overpressure relief pipeline.

Images