RU139436U1 - DEVICE FOR PRODUCING MIXTURE, AT LEAST, TWO LIQUIDS - Google Patents

Abstract

1. Device for producing a mixture of at least two liquids, made in the form of a pipeline including functional chambers: a receiving chamber with nozzles for supplying mixed liquids, a mixing chamber equipped with swirlers in the form of elongated plates fixedly mounted on an axis running along the entire the length of the mixing chamber, with an angular displacement relative to each other and at a fixed distance from each other, characterized in that it further comprises a ripening chamber in communication with the camera is mixed I located above the mixing chamber and formed into a coil consisting of sections in the form of straight sections interconnected by shaped coupling elements, wherein the ripening chamber outlet nozzle arranged below the mixing chamber level or flush with ney.2. The device according to claim 1, characterized in that the swirls of the mixing chamber are made in the form of plates bent at a right angle in the longitudinal axis and are installed with an edge facing the flow of mixed liquids. The device according to claim 1, characterized in that it contains two mixing chambers installed parallel to each other and connected by common inlet and outlet pipes, equipped with shut-off and distribution valves, allowing one of the chambers to be removed from the process. The device according to claim 1, characterized in that the sections of the maturation chamber are placed horizontally parallel to each other in the vertical and horizontal planes, and the final section in front of the outlet pipe is vertical. The device according to claim 4, characterized in that the longitudinal size of each

Description

The utility model relates to the design of a static mixer for preparing a mixture of two or more liquids and can be used in wastewater treatment plants, for example, mine or quarry, using solutions of active reagents that regulate the pH of the medium (milk of lime, soda).

A built-in static mixer is known, formed by a cylindrical body with nozzles for input and output of the processed medium, in the cavity of which swirlers are sequentially placed in the form of flat plates, blades and blades of complex shape, and due to a certain sequence of their installation, the degree of homogenization of the processed medium is increased, since some elements as if “preparing” its flow for others (US N4461579, B01F 5 \ 00, 1984). However, this mixer is quite complicated.

Closest to the proposed technical solution is a device for producing a mixture of at least two liquids, which contains a cylindrical body with a sleeve and an insert with a central channel made in the form of a nozzle, forming a chamber for preliminary and final mixing, and nozzles for supplying the first and second liquids into the pre-mixing chamber, the final mixing chamber is divided into sections, partially fenced from each other by swirlers - plates made in the form of strips, with ends rounded off under the inner surface of the housing and fixed motionless on an axis extending along the entire length of the final mixing chamber, with angular displacement relative to each other. The longitudinal size of each section of the final mixing chamber is the same, and the angular displacement of the plates forming the sections relative to each other is 30 degrees. The amount of mixed liquids is determined by the number of nozzles located perpendicular to the first fluid supply pipe and the first fluid pipe itself (RU 435839, C12G 3/04, B01F 5/06, B01F 5/16, 2011).

A disadvantage of the known devices is that they have a limited scope and cannot be used in processes where the chemical interaction of the mixed liquids takes place, which takes a certain time to complete.

So, for example, in wastewater treatment plants when treating acidic wastewater with lime milk or a soda solution, exposure of the mixture to an intermediate tank is required to ensure that the neutralization process and the formation of metal hydroxide flocs are complete (maturing of the mixture). The inclusion of additional capacity in the installation, and usually, they require several, complicates the installation, requires large areas for their placement.

The objective of the proposed technical solution is to expand the scope of the mixer and increase the compactness of the plants in which it is used. Another objective is to ensure the continuity of the process when performing preventive or repair work and simplify maintenance.

To solve these problems, a device is proposed for producing a mixture of at least two liquids, comprising a housing in the form of a pipeline including functional chambers: a receiving chamber with nozzles for supplying mixed liquids, a mixing chamber equipped with swirls fixedly mounted on an axis running along the entire length mixing chamber, with an angular displacement relative to each other and at a fixed distance from each other, which, according to the proposed solution, further comprises a maturation chamber connected to the mixing chamber, located above the mixing chamber and representing a pipe made in the form of a coil, consisting of sections in the form of rectilinear sections interconnected by shaped connecting elements, and the outlet pipe of the maturation chamber is located below the level of the mixing chamber or at the same level as her.

In addition, in the proposed device:

- sections of the maturation chamber are placed horizontally parallel to each other in horizontal and vertical planes, and the final section is vertical;

- the longitudinal size of the rectilinear sections of the maturation chamber, with the exception of the final section, is close to the longitudinal size of the mixing chamber;

- the maturation chamber is additionally equipped with a chamber for collecting mechanical impurities located at the junction of the vertical section and the outlet pipe;

- the device mainly contains two mixing chambers installed parallel to each other and connected by common inlet and outlet nozzles, equipped with shut-off and distribution valves, allowing to withdraw one of the chambers from the technological process;

- the swirls of the mixing chamber are made in the form of plates bent in the longitudinal axis at right angles and are installed with an edge facing the flow of mixed liquids;

- the number of nozzles for supplying mixed liquids corresponds to the number of mixed liquids;

- nozzles for supplying the second and subsequent mixed liquids are installed perpendicular to the nozzle for supplying the first liquid.

The proposed utility model is illustrated by drawings. In FIG. 1 shows a general view of the device, FIG. 2 a receiving chamber, FIG. 3 mixing chambers, in FIG. 4, a mixing chamber, section AA and view C, in FIG. 5 the maturation chamber, in FIG. 6 chamber maturation type A.

The proposed device is a pipe system mounted on a support frame, consisting of pipes of a certain design diameter and shaped pipe fittings (similar diameters) made of low pressure polyethylene with shutoff valves installed on them.

The device contains a receiving chamber 1 for receiving mixed liquids, the first liquid from the supply pipe through the inlet pipe 2 and the second liquid through the pipe 3. The pipe 3 has a bend at right angles and is installed perpendicular to the pipe 2 in such a way that the second liquid is supplied along the axis of the main flow. If it is necessary to mix more than two liquids, the receiving chamber is equipped with additional nozzles similar to nozzle 3. The number of nozzles for supplying mixed liquids to the receiving chamber corresponds to the number of mixed liquids. The nozzles for the supply of the second and subsequent mixed liquids are installed perpendicular to the nozzle for the supply of the first liquid.

The receiving chamber 1 is connected to the mixing chamber 5 by means of a flange connection through the nozzle 4. In a preferred embodiment, the device is equipped with two mixing chambers of the main 5 and backup 6, interconnected by inlet 4 and outlet 7 nozzles, which are made in the form of a tee with shut-off and control valves, allowing to withdraw one of the chambers from the technological process without stopping the process, if necessary, carry out routine or repair work. The primary and secondary mixing chambers have a similar design. The mixing chamber is a section of the pipeline, equipped with swirlers 8 in the form of plates, bent at right angles along the longitudinal axis, made of stainless steel. The swirlers are stationary mounted on the axis 9, passing along the entire length of the mixing chamber, at a fixed distance from each other and with an angular displacement of mainly 30-50 ° relative to each other, and are installed with an edge facing the flow of mixed liquids.

The mixing chamber through the pipe 7 is communicated with the maturation chamber 10, made in the form of a coil. The ripening chamber is a collapsible design in the form of a sectional piping piping, consists of sections in the form of straight sections located parallel to each other in the vertical and horizontal planes and interconnected by shaped connecting elements 11. The ripening chamber is located above the level of the mixing chambers, mainly option above them. The longitudinal dimension of each horizontal section of the maturation chamber is close to the length of the mixing chambers. The final section of the ripening chamber is located vertically, and the outlet pipe 12 of the ripening chamber is located at or below the level of the mixing chambers 5 and 6. The residence time of the mixture of liquids in the ripening chamber is determined depending on the reaction time in the mixture composition, is controlled by changing the diameter and the total length of the maturation chamber, as well as due to the speed of movement of the fluid flow. Subsequent transportation of liquid media is carried out in accordance with the technological process, due to the hydraulic pressure of the main stream. The ripening chamber, if necessary, can be equipped with a chamber 13, for trapping and collecting mechanical impurities, which is installed at the junction of the vertical section and the outlet pipe 12, the bottom of the chamber 13 is made removable (collapsible) to remove trapped mechanical impurities.

The entire installation is mounted on a metal support frame 14. Sealing of detachable joints of pipeline sections is performed by means of flange joints and gaskets made of a suitable polymeric material, for example, fluoroplastic.

The device operates as follows. Mixed liquids, for example, wastewater, to be treated with, for example, milk of lime, enter through a pipe 2 into a receiving chamber 1, where lime milk is fed through a pipe 3. Next, the flow of mixed liquids enters one of the mixing chambers 5 or 6, where, colliding with the faces of the swirlers 8, it acquires a turbulent motion. Due to the placement of each of the subsequent swirls with an angular displacement of 30-50 ° to the previous one, a high level of turbulence of the mixture flow in the axial, radial and angular directions is maintained, which ensures a high-quality mixture of liquids at the outlet from the chamber. Next, the resulting mixture enters the maturation chamber, where the neutralization process takes place with the formation of flakes of metal hydroxides to obtain a suspension, which then is sent to the floc precipitation and separation during the process.

The overall dimensions of the mixer, when used, for example, in a wastewater treatment plant with a capacity of 400 m ³ / h. are: 7500 m × 2650 m × 4050 m.

The proposed device also has the following advantages:

1. No additional costs for electrical equipment, as mixing of liquids is carried out due to the hydraulic energy of the main stream supplied to the processing.

2. No additional pumping equipment is required for pumping the treated stream in accordance with the technological process, or installing additional supporting structures to create a height difference to create a gravity-free process for transporting liquid media.

3. No additional foundations required. Distributed weight loads are transferred to the supporting elements of the frame. The preferred placement of the device is usually around 0.00.

4. There are no dynamic loads on structural elements.

5. No shutdown of the process when performing preventive or repair work.

6. There is the possibility of changing the volumetric characteristics of the processed fluid flows by increasing or decreasing the number of sections of the maturation chamber.

Claims (8)

1. Device for producing a mixture of at least two liquids, made in the form of a pipeline including functional chambers: a receiving chamber with nozzles for supplying mixed liquids, a mixing chamber equipped with swirlers in the form of elongated plates fixedly mounted on an axis running along the entire the length of the mixing chamber, with an angular displacement relative to each other and at a fixed distance from each other, characterized in that it further comprises a ripening chamber in communication with the camera is mixed I located above the mixing chamber and formed into a coil consisting of sections in the form of straight sections interconnected by shaped coupling elements, wherein the ripening chamber outlet pipe located below the level of the mixing chamber or at the same level with it. 2. The device according to claim 1, characterized in that the swirls of the mixing chamber are made in the form of plates bent at a right angle in the longitudinal axis and are installed with an edge facing the flow of mixed liquids. 3. The device according to p. 1, characterized in that it contains two mixing chambers installed parallel to each other and connected by common inlet and outlet pipes, equipped with shut-off and distribution valves, allowing to withdraw one of the chambers from the technological process. 4. The device according to claim 1, characterized in that the sections of the maturation chamber are placed horizontally parallel to each other in the vertical and horizontal planes, and the final section in front of the outlet pipe is vertical. 5. The device according to p. 4, characterized in that the longitudinal size of each rectilinear section of the maturation chamber, with the exception of the final vertical section, is close to the longitudinal size of the mixing chamber. 6. The device according to claim 1, characterized in that the maturation chamber is additionally equipped with a chamber for collecting mechanical impurities located at the junction of the vertical section and the outlet pipe. 7. The device according to claim 1, characterized in that the number of nozzles for supplying the mixed liquids to the receiving chamber corresponds to the number of mixed liquids. 8. The device according to claim 1, characterized in that the supply pipes of the second and subsequent mixed liquids are installed perpendicular to the supply pipe of the first liquid.

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