RU2174046C2 - Vibromixer of flowing materials - Google Patents

Abstract

FIELD: devices of mixing, dispersion, disintegration of materials in liquid mixtures or suspensions; applicable in mineral concentration, construction engineering, chemical, food and fuel industries. SUBSTANCE: vibromixer is used for production of finely dispersed loose materials by wet method. Vibromixer consists of hydropulsing power drive and technological part. Used in drive is high-frequency vibropulser communicated by means of channel with cavity of hydraulic cylinder with spring-loaded piston and rod. Cavitation treatment of flowing materials is carried out in successive flow of materials in gaps between vibrating rod screw turns and fixed turns of body screws. Short-time treatment of material is performed in parallel flows of radial direction from body cone cavity and rod cone cavity over gaps between discs. EFFECT: higher intensity of wet grinding and productivity. 4 dwg

Description

 The invention relates to devices for mixing and activating materials in liquid mixtures or suspensions in the fuel, mining, construction, chemical, food industries.

 A known mixer of fluid materials, comprising a housing with devices for input and passage of components of materials, output of mixtures thereof, a vibrodrive and hollow stem and disks with holes and channels placed in the housing (A.S. 1095976, 01 F 11/001, 1982) .

 This mixer of complex design is ineffective because of the impossibility of action at a high frequency of obtaining a stable cavitation effect on materials in the entire volume.

 Known vibration actuators in the form of mechanical vibration exciters, for example in the form of a disk copier or cylindrical worm (RU 2029611, 6 V 01 F 7/04, 11/00, 1991).

 Such a vibrator is inoperative with high-frequency action.

The technical problem solved by the invention:
- increase the efficiency and productivity of the mixer, its reliability and simplification of the design.

 This problem is solved in that in a fluid material mixer containing a housing with devices for input and passage of components of materials, output of mixtures thereof, a vibrodrive and a hollow rod and disks with holes and channels located in the housing, a high-frequency hydro-pulsator is used as a vibrodrive. It is placed in the tank and communicated with the cavity of the hydraulic cylinder, the piston and the rod of which are installed in the mixer with the possibility of reciprocating movement of the mixer parts, between the surfaces of which there are gaps that serve as passage channels for the mixed components of materials by vibrating parts. High-frequency vibrations create conditions for repeated cavitation effects on materials processed in a liquid stream in zones of multiple evacuation with a sharp collapse of cavitation bubbles.

 Cavitation effects are carried out by high-frequency axial vibrations of the walls of the channels for pumping fluid materials, carried out by the hydraulic cylinder of the high-frequency hydro-pulsator. The vibration mixer comprising a housing, a rod, a vibrator, has channels for pumping fluid materials, made in the form of gaps between the oscillating surfaces of the rod and the stationary surfaces of the housing.

 For continuous processing of materials, axial channels are located between the screw surfaces of the oscillating rod and the screw surfaces of the housing. For short-term - in the radial direction between the stem disks and the housing disks.

 The mixer vibrator is made of a high-frequency hydraulic pulsator with a hydraulic cylinder and a rod.

Explanatory drawings:
FIG. 1 is a diagram of a vibration mixing plant with a sequential flow of fluid materials (1 option).

 FIG. 2 - the same with parallel flows (option 2).

 FIG. 3 - hydro-pulsator in longitudinal section.

 FIG. 4 - the same in cross section.

 The vibratory mixer (dispersant, mixer) consists of a hydro-pulsation power drive and a technological part.

 An electric motor 2 with a glass 3 and a hydro pulsator 4 is installed on the tank 1. The shafts of the electric motor and hydro pulsator are connected by a coupling 5.

 The lower part of the hydraulic pulsator is located in the working fluid (mineral oils).

 The hydraulic pulsator is made of high-frequency pulsating at a frequency of 50-600 Hz. It is connected by a supply 7 to the hydraulic cylinder 8. A piston 9 with a return spring 10 and a rod 11 is located in the hydraulic cylinder.

 The technological part of the vibratory mixer is presented in two versions.

 In the first embodiment, the working part of the rod is made in the form of a screw 12 with helical ribs 13, holes 14 located in the end of the rod. The Central hole 15 is combined with the output channel 16. The housing 17 has an inlet pipe 18, a cavity 19, holes 20, a cavity 21, in communication with the gaps 22 between the ribs 13, 23.

 There is a seal 24 that protects against the ingress of a liquid mixture of the processed material into the hydraulic cylinder 8.

 In the second embodiment, the ribs 25 of the rod 11 and the stationary ribs 26 of the pipe 27 are made disk-shaped with flat surfaces.

 The inlet cavity 28, the outlet 29 are made conical. There are through holes 30 and exit 31.

 The double-closing high-frequency hydraulic pulsator has a housing consisting of a middle disk 32 and side disks 33 and 34 tightened by bolts 35. Two working cavities are formed in the housing, limited by rotor 36 and two contactors 37. The rotor is equipped with rollers 38 with cylinders 39 and gears 40 with teeth 41 The switches are provided with teeth 42, have recesses 43 and necks 44 installed in the support sleeves 45. In the case disks there are inlet openings 46, an outlet 47, and in the rotor 36 an opening 48 connecting the pressure working cavities.

 Vibration mixer works as follows.

 During the rotation of the rotor 36 (Fig. 3) with the contactors 37, the working fluid enters the working cavity of the hydro-pulsator through the openings 46 and is pumped through the opening 47 into the hydraulic cylinder cavity to provide pulsed pressure and corresponding oscillation at the moment of contacting the teeth of 42 contactors with the teeths of 41 gears 40 installed on the rotor 36. When the discharge pressure is generated, the rollers 38 are pressed against the cylindrical surface of the housing disk 1, preventing leakage. At the moment of passage of the rollers 38 through the recesses 43 of the contactors, the passage of fluid from the discharge openings 47 and 48 to the suction openings 46 will be open.

 The fluid discharge pressure drops to the suction pressure. The piston 9 of the hydraulic cylinder under the influence of a spring to return to its original position. This ensures a pulsation cycle. The ripple frequency will be equal to the rotational speed of the motor shaft 2, multiplied by the number of contactors, in this design doubled.

 Processed fluid materials are pumped (in 1 embodiment) through a pipe 18 (Fig. 1) through a hole 20 into the gaps between the fixed turns of the screw 23 of the housing and the oscillating turns of the screw 13 of the piston rod 11, causing a change in the size of the gaps between the fixed and moving surfaces of the screws 13 and 23. With a high-frequency oscillation of the rod in the cavities of the gaps 22, a vacuum — vacuum, then an increase in pressure with the ejection of fluid materials through the axial clearances and their reciprocating movements in the cavities of the gaps — is caused.

 Mixing and crushing of fluid materials. The processed materials on the final portion of the rod 15 are displaced through the radial holes 14 into the pipe 16.

 The degree of processing of materials is determined by the length of the gaps, the frequency and amplitude of the oscillations of the rod. With a small degree of processing of a large number of fluid materials (option 2 - Fig. 2), they are processed in parallel flows with their radial movement in the gaps between the disks 25 and 26 from the conical cavity 28 of the body into the conical cavity 29 of the rod. The high-frequency cavitation effect on fluid materials under continuous mixing in sequential or parallel flows increases their processing productivity and the intensity of self-grinding in a liquid medium.

Claims (1)

 A fluid material mixer comprising a housing with devices for input and passage of components of materials, output of mixtures thereof, a vibratory actuator and hollow stem and disks with holes and channels placed in the housing, characterized in that the vibratory actuator is made in the form of a high-frequency vibratory pulsator located in the tank and communicated with the cavity a hydraulic cylinder, the piston and rod of which are installed in the mixer with the possibility of reciprocating movement of the parts of the mixer, between the surfaces of which there are gaps serving the channel and passage of the mixed materials components.

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