Inline dynamic and static mixer

Abstract

The present invention provides an online dynamic and static mixer, which has a barrel, the front end of which is a liquid flow inlet, and the rear end is a mixing outlet; an injection conduit extends from the radial side of the barrel into the barrel near the front end, and its outer end is a medium inlet; a distributor has a plurality of conduits arranged radially, the outer ends of the conduits are closed, the inner ends of the conduits are connected to the injection conduits, and a plurality of spray holes are opened on the side wall of each conduit; a mixing internal is arranged in the barrel downstream of the distributor; a stirring blade is fixed in the barrel downstream of the mixing internal, and its rotating shaft extends radially out of the barrel and is connected to a motor; a flow rate detector is installed in the barrel near the liquid flow inlet, and forms a signal connection with the motor. The present invention integrates static and dynamic mixers by arranging a distributor, a mixing internal and a stirring blade, thereby improving the mixing efficiency.

Description

Technical Field

[0001] The invention relates to a mixer structure used in sludge treatment and can also be suitable for mixing other media. Background Art

[0002] Sludge treatment is a very critical part of oilfield wastewater treatment. With increasingly stringent environmental protection requirements, harmless and efficient sludge treatment has become an inevitable trend. Sludge dehydration is the premise of sludge treatment. Reducing the water content of sludge can effectively reduce the load and difficulty of subsequent sludge treatment equipment, and significantly reduce the cost of sludge treatment. Online fast mixer is a key equipment for mixing sludge and reagents.

[0003] Online fast mixers are divided into static and dynamic types according to whether external energy is required. Static mixers use a special pipeline structure inside the mixer to produce three effects when the liquid flows through, namely, diversion, cross mixing and reverse swirl, so that the added medium can be quickly and evenly diffused into the entire liquid flow to achieve the purpose of instantaneous mixing. Dynamic mixers use a motor to drive the blades to rotate to form a stirring effect, so that the added medium and the liquid flow are quickly mixed.

[0004] However, static mixers mix media through pipeline structures and are only suitable for situations with faster flow rates. When the flow rate is slow, the mixing effect is poor and the automatic adjustment performance is poor. Dynamic mixers have poor media rectification effects and high energy consumption. Summary of the invention

[0005] The purpose of the present invention is to provide an on-line dynamic and static mixer to solve the above-mentioned technical problems existing in the prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] An online dynamic and static mixer, characterized by having:

[0008] The cylinder has a front end as a liquid flow inlet and a rear end as a mixing outlet;

[0009] An injection conduit extends from the radial side of the cylinder into the cylinder near the front end, and its outer end is a medium inlet;

[0010] The distributor comprises a plurality of conduits arranged radially, the outer ends of the conduits are closed, the inner ends of the conduits are connected to the injection conduits, and a plurality of spray holes are opened on the side wall of each conduit;

[0011] A mixing internal component arranged in the barrel downstream of the distributor;

[0012] The stirring blade is fixed in the cylinder downstream of the mixing internal component, and its rotating shaft extends radially out of the cylinder and is connected to a motor.

[0013] The online dynamic and static mixer, wherein: the liquid flow inlet and the mixing outlet are respectively provided with flanges.

[0014] The in-line dynamic and static mixer, wherein: the outer end of the conduit is fixedly connected to the inner wall of the cylinder.

[0015] The in-line dynamic and static mixer, wherein: the spray hole is arranged forward and / or backward.

[0016] The in-line dynamic and static mixer, wherein: the inner end of the injection conduit is connected to an axial tube extending therefrom, and the inner end of the conduit is fixed to and connected with the axial tube.

[0017] The in-line dynamic and static mixer, wherein: the mixing internal component has six fins evenly distributed in a radial shape.

[0018] The online dynamic-static mixer, wherein: the outer end of the rotating shaft is connected to the motor power through a reducer.

[0019] The in-line dynamic and static mixer, wherein: the stirring blade has two layers, which are respectively fixed at different length positions where the rotating shaft extends into the cylinder.

[0020] The online dynamic-static mixer further comprises a flow velocity detector which is installed in the cylinder near the liquid inlet and forms a signal connection with the motor.

[0021] The advantages of the present invention are:

[0022] 1. Adapt to a wide range of medium flow rates;

[0023] 2. Good rectification effect on the medium;

[0024] 3. The mixing process is continuous, fast and uniform;

[0025] 4. The paddle mixer can be started and stopped according to the flow rate of the medium and the speed can be adjusted to achieve the best mixing effect;

[0026] 5. The equipment has a compact structure and is connected by flanges, making it easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural principle diagram of the online dynamic and static mixer provided by the present invention;

[0028] Figure 2 It is a schematic diagram of the planar structure of the distributor;

[0029] Figure 3 It is a schematic diagram of the planar structure of the mixing internals.

[0030] Explanation of the reference numerals: cylinder 1; liquid inlet 11; mixing outlet 12; flanges 13, 14; stirring blade 2; reducer 3; flange 31; motor 4; flange 41; mixing internal part 5; fin 51; injection duct 6; medium inlet 61; axial tube 62; distributor 7; duct 71; spray hole 72; rotating shaft 8; flow rate detector 9. DETAILED DESCRIPTION

[0031] Some specific embodiments of the present invention will be described in detail below in an exemplary and non-restrictive manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to true scale.

[0032] like Figure 1 As shown, the present invention provides an online dynamic and static mixer having:

[0033] The cylinder 1 has a liquid inlet 11 at the front end and a mixing outlet 12 at the rear end. The liquid inlet 11 and the mixing outlet 12 are provided with flanges 13 and 14 respectively for connecting with the pipelines before and after the equipment.

[0034] The injection conduit 6 is used to add medium into the cylinder 1. It extends from the radial side of the cylinder 1 into the cylinder 1 near the front end. Its outer end is a medium inlet 61, and its inner end is connected to the front end and extends to the axial core tube 62.

[0035] The distributor 7 is used to evenly mix the medium into the liquid flow and play the role of rectification and preliminary static mixing; Figure 2 As shown, there are a plurality of radially arranged conduits 71, the outer ends of the conduits 71 are fixedly connected to the inner wall of the barrel 1 and are closed, the inner ends of the conduits 71 are fixed to and communicated with the axial tube 62, and a plurality of spray holes 72 are opened on the side wall of each conduit 71, and the spray holes 72 are arranged forward and / or backward (preferably arranged forward to improve the mixing effect);

[0036] The mixing internal part 5 is an existing product structure. A variety of structural forms on the market can be selected according to the properties of the medium. Its purpose is to produce three effects when the liquid flow passes through, namely, flow separation, cross mixing and reverse swirl, so that the medium can be quickly and evenly diffused into the entire liquid flow to achieve the purpose of instantaneous mixing; Figure 3 As shown, the mixing internal 5 has six fins 51 evenly distributed in a radial shape, which are fixed to the inner wall of the cylinder 1 by welding or by fastening elements (such as bolts);

[0037] The rotating shaft 8 has an outer end connected to the motor 4 through the reducer 3, and an inner end inserted radially into the cylinder 1 near the rear end; the reducer 3 is connected to the cylinder 1 through a flange 31, and the motor 4 is also connected to the reducer 3 through a flange 41;

[0038] The stirring blade 2 has two layers, which are respectively fixed at different lengths of the rotating shaft 8 extending into the cylinder 1;

[0039] The flow rate detector 9 is installed in the cylinder 1 near the liquid flow inlet 11 and forms a signal connection with the motor 4. If the liquid flow velocity at the liquid flow inlet 11 is fast, the motor 4 is notified to stop supplying power, so that the stirring blade 2 only plays a role of static mixing. If the liquid flow velocity at the liquid flow inlet 11 is slow, the motor 4 is notified to output corresponding power, so that the stirring blade plays a role of dynamic mixing. The slower the liquid flow velocity at the liquid flow inlet 11, the faster the rotation speed of the motor 4.

[0040] In addition, by manually adjusting the reduction ratio of the reducer 3, the output torque of the rotating shaft 8 can be within a suitable range to adapt to different medium properties.

[0041] The working process of the present invention is as follows:

[0042] The liquid flow enters the cylinder 1 from the liquid flow inlet 11 at the front end of the cylinder 1, and the medium is injected into the cylinder 1 evenly from the injection conduit 716 through the medium distributor 7 and finally through the nozzle 72. The medium distributor 7 itself is also a static rectifying internal part in the cylinder 1, which preliminarily mixes and rectifies the liquid flow and the medium.

[0043] The mixed medium then passes through the mixing internal 5, where it undergoes rectification and static mixing. The mixing internal 5 is the static mixing part of the equipment, and its pipeline structure can produce three effects when the liquid flow passes through, namely, flow division, cross mixing and reverse swirl, so that the medium can be quickly and evenly diffused into the entire liquid flow, achieving the purpose of instantaneous mixing.

[0044] The medium after rectification and static mixing enters the dynamic mixing area, in which two sets of upper and lower stirring blades 2 are arranged to quickly stir and mix the liquid flow in the cylinder 1 and the medium; wherein, the flow velocity detector 9, the reducer 3 and the motor 4 are interlocked and automatically controlled. When the flow velocity of the medium is fast, the motor 4 stops, and the online dynamic and static mixer becomes an online static mixer at this time; when the flow velocity of the medium is slow, the motor 4 starts, dynamically mixes the medium, and automatically adjusts the blade speed according to the flow velocity of the medium, so that the online dynamic and static mixer is always in the best mixing effect.

[0045] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the claims, but all will fall within the scope of protection of the present invention.

Claims

1. An online dynamic and static mixer, characterized in that: have: The cylinder has a front end as a liquid flow inlet and a rear end as a mixing outlet; An injection conduit extends from the radial side of the cylinder into the cylinder near the front end, and its outer end is a medium inlet; The distributor comprises a plurality of conduits arranged radially, the outer ends of the conduits are closed, the inner ends of the conduits are connected to the injection conduits, and a plurality of spray holes are opened on the side wall of each conduit; A mixing internal component arranged in the barrel downstream of the distributor; A stirring blade is fixed in the cylinder downstream of the mixing internals, and its rotating shaft radially extends out of the cylinder and is connected to a motor; The flow velocity detector is installed in the cylinder near the liquid flow inlet and forms a signal connection with the motor. The flow velocity detector can notify the motor to stop supplying power so that the stirring blade only plays a role of static mixing. The flow velocity detector can also notify the motor to output power so that the stirring blade plays a role of dynamic mixing. The slower the liquid flow velocity at the liquid flow inlet, the faster the motor speed.

2. The in-line dynamic and static mixer according to claim 1, characterized in that: The liquid flow inlet and the mixing outlet are respectively provided with flanges.

3. The in-line dynamic and static mixer according to claim 1, characterized in that: The outer end of the conduit is fixedly connected to the inner wall of the cylinder.

4. The in-line dynamic and static mixer according to claim 1, characterized in that: The spray holes are arranged forward and / or backward.

5. The in-line dynamic and static mixer according to claim 1, characterized in that: The inner end of the injection catheter is connected to an axial tube and extends therefrom. The inner end of the catheter is fixed to and connected with the axial tube.

6. The in-line dynamic and static mixer according to claim 1, characterized in that: The mixing internal has six fins evenly distributed in a radial shape.

7. The in-line dynamic and static mixer according to claim 1, characterized in that: The outer end of the rotating shaft is connected to the motor power through a reducer.

8. The in-line dynamic and static mixer according to claim 1, characterized in that: The stirring blade has two layers, which are respectively fixed at different length positions where the rotating shaft extends into the cylinder.

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