JPS5853203B2 - Pipe static stirring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conduit static stirring device for compatible fluids of low to medium viscosity.

In the conventional pipe static stirring device, a large number of internal substances having a complicated structure are arranged adjacent to each other in the pipe.

Therefore, there is a drawback that pressure loss due to passage of fluid through the pipe becomes large.

The present invention has been made in view of this, and its purpose is to statically stir a compatible fluid of low to medium viscosity in a conduit, and its gist is to make the fluid flow eccentrically from the perpendicular direction of the conduit so as to absorb the inflow inertia of the fluid. gives a swirling turbulent motion to the fluid, and then gives swirling and flow in the opposite direction at the time of inflow using multiple inclined oar-shaped blades (referred to as pitched paddles), achieving twisting mixing of the liquid and swapping of positions. Furthermore, a multi-hole disk (hereinafter referred to as an orifice plate) having large and small holes changes the swirling flow of the liquid into a straight flow, and when the liquid flows through each hole, turbulence is created by a trailing vortex. and orifice plates are arranged adjacent to each other, thereby achieving static agitation of the pipe by internal substances with little pressure loss.

Next, embodiments of the present invention will be described with reference to the drawings.

In the figure, 1 is a conduit, and the left end of this conduit 1 is connected to the flange plate 2.
The right end of the conduit is joined to the adjacent tube at the liquid outlet 3.

Further, a liquid inlet pipe 4 is provided on the closed end side of the conduit 1, perpendicular to the conduit and eccentric by ε.

The liquid inlet pipe 4 is disposed downstream of the confluence of the continuous phase and dispersed phase two liquids.

Since the mixed liquid flows in from the liquid inlet pipe 4 and is eccentric by ε,
Due to the inflow inertia, it flows downstream (to the right in the figure) while creating a clockwise swirling turbulent flow when viewed from the right side.

In addition, 5 in the figure is a four-blade pitched paddle, and the blade plate is twisted in the right-handed direction, so the inflowing liquid is given a left-handed rotation by the pitched paddle 5, which is the opposite direction to that at the time of inflow.
This achieves twist mixing and position swapping.

FIG. 2 shows details of the pitched paddle 5, and the number and twist angle of the blades are set to obtain the best effect depending on the inner diameter of the conduit, liquid flow rate, viscosity, etc.

In addition, 6 is an orifice plate with large and small holes, and the liquid swirling to the left passes through many large and small orifices, slightly changing the flow into a straight flow, and furthermore, there is a difference in speed when passing through each orifice. This causes turbulence in the trailing vortex, resulting in a mixing and stirring action.

The pitched paddle 5 and the orifice plate 6 are fixed at one end to the center of the flange plate 2 and fixed to a non-rotating shaft 7 at a predetermined distance.

Furthermore, another set of pitched paddles 5a and orifice plate 6a are disposed on this axis γ, and mixing and stirring of compatible fluids is achieved by alternately repeating counterclockwise rotation and linear flow.

Furthermore, in order to achieve sufficient mixing and agitation, the holes in the pitched paddles 5 and 5a and the orifice plates 6 and 6a are arranged with their phases shifted by 45 degrees to prevent straight communication of the liquid.

FIG. 1 shows pitched paddles 5, 5a and orifice plate 6,
6a shows the case where each stage is two stages, but it is also possible to have multiple stages such as three stages, four stages, etc. depending on the stirring conditions.

As explained above, the present invention utilizes the inertia of the inflowing liquid to give the liquid swirl holes and vortex flow, and furthermore, the present invention utilizes the inertia of the inflowing liquid to give the liquid swirl holes and vortex flow, and furthermore, the present invention utilizes the inertia of the inflowing liquid to give the liquid a swirling hole and a vortex flow.
By alternately arranging them, static stirring of low to medium viscosity compatible fluids can be achieved by repeating changes in the direction of swirling flow, swapping of positions, and turbulent flow due to speed changes caused by the orifice. There are advantages to being able to do so.

[Brief explanation of the drawing]

FIG. 1A is a longitudinal sectional front view of the conduit static stirring device, FIG. 1B is a right side view, FIG. 2 is a front view of a four-blade pitched paddle, and FIG. 3 is a front view of an orifice plate. 1... Conduit, 2... Flange plate, 3.
...Liquid outlet, 4...Liquid inlet, 5, 5a.
...Pitched paddle, 6°6a ... Orifice plate, 7 ... Axis.

Claims (1)

[Claims] 1 In a conduit whose one end is sealed with a flange plate and which has a liquid outlet at the other end, a liquid inlet is provided on the sealed end side of the conduit and is perpendicular to the conduit and eccentric, and the liquid inlet is provided protruding from the sealing flange plate. A plurality of pitched paddles each having a plurality of tilted paddle-shaped blades (oar-shaped blades) and a plurality of orifice plates each consisting of a perforated disc are arranged adjacent to each other alternately with the respective phases changed on the fixed axis. A pipe static stirring device characterized by repeating turbulent flow due to changes in the direction of the swirling flow and changes in speed due to the position exchanged orifice by fixing the pipe.