An in-line mixer

Abstract

The utility model discloses an online mixer, including pipeline, the pipeline has liquid inlet and liquid outlet, and the side part is equipped with the liquid supplement mouth near liquid inlet, and the pipeline is located behind the liquid supplement mouth and is equipped with the stirring mechanism for stirring the liquid of reaching to the liquid supplement mouth, the stirring mechanism includes the shunt fixed link, and a plurality of mixed liquid wheels can be rotatable installation on the shunt fixed link, wherein, the blade bending direction of two adjacent mixed liquid wheels is opposite. In this way, the liquid supplement enters the main liquid from the liquid supplement mouth, and under the driving of the main liquid flow rate, flows forward along the pipeline. In the flowing process, the mixed liquid wheel is driven by the pressure generated by the liquid flow, starts to rotate, and the reaction force generated when the mixed liquid wheel rotates will in turn drive the liquid flowing to rotate, so that the liquid is mixed. The blade bending direction of adjacent mixed liquid wheels is opposite, can form the staggered stirring to the liquid flowing, makes the liquid present the state of positive and negative alternately in the pipeline, improves the uniformity of liquid mixing.

Description

Technical Field

[0001] This utility model relates to the field of mixers, and more specifically to an online mixer. Background Technology

[0002] In semiconductor manufacturing, stringent requirements are placed on the mixing precision and efficiency of materials and processing fluids. Currently, the preparation of semiconductor workpiece processing fluids mainly employs a series of intermittent processes based on independent mixing tanks. This traditional model has many limitations: not only are the equipment purchase costs high, the space occupied large, and the energy consumption high, but the production process is also lengthy and, constrained by the capacity of the mixing tanks, it is difficult to flexibly handle small-batch orders and sporadic usage scenarios. Moreover, it is prone to introducing air bubbles into the mixed solution. As semiconductor manufacturing technology advances towards higher precision, the requirements for processing fluid quality are constantly increasing, and traditional preparation methods can no longer meet the growing technological demands. Utility Model Content

[0003] Based on this, and in response to the above problems, this utility model provides an online mixer.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] An online mixer includes a pipe with an inlet and an outlet, and a replenishment port on the side near the inlet. A stirring mechanism for agitating the arriving liquid is located inside the pipe behind the replenishment port. The stirring mechanism includes a flow divider and a plurality of mixing wheels. The flow divider has a plurality of vertical blades distributed circumferentially on its front outer wall, a conical head at its front end, and a plurality of annular grooves spaced apart at its rear. Each mixing wheel is rotatably mounted in a corresponding groove, wherein the blades of adjacent mixing wheels bend in opposite directions.

[0006] Using the above technical solution, the replenishing liquid enters the main liquid through the replenishing port and flows towards the outlet along the pipeline under the influence of the main liquid's flow rate. During the flow, the conical head squeezes the main liquid flowing through the middle outwards, while the vertical blades interfere with the liquid's flow direction, thereby increasing the mixing degree of the main liquid and the auxiliary liquid. Secondly, the mixing wheel is driven by the pressure generated by the liquid flow and begins to rotate. The reaction force generated by the rotation of the mixing wheel, in turn, drives the flowing liquid to rotate, thus mixing the liquid. Furthermore, the blades of adjacent mixing wheels bend in opposite directions, creating staggered stirring of the flowing liquid. When the liquid flows through the first mixing wheel, it flows in the direction of the blade bend of that mixing wheel. Then, when it encounters the second mixing wheel with the blade bend direction opposite to that of the first mixing wheel, the liquid flow direction is guided to the opposite direction again. This process repeats, creating an alternating forward and reverse flow state of the liquid in the pipeline, improving the uniformity of liquid mixing.

[0007] In a specific embodiment of this utility model: the number of mixing wheels is 3, the blades of the middle mixing wheel are all bent in a clockwise direction, and the blades of the mixing wheels on both sides are all bent in a counterclockwise direction.

[0008] In a specific embodiment of this utility model: the vertical blade is a sheet-like structure that is thick in the middle and thin at both ends, and has a symmetrical oblique cut at the front.

[0009] In a specific embodiment of this utility model: A flow guiding mechanism is further provided within the pipe, located behind the stirring mechanism, for guiding and rotating the arriving liquid to achieve mixing. This flow guiding mechanism includes multiple sets of spaced-apart rotating plate groups, each consisting of a pair of rotationally symmetrical rotating plates. Thus, the liquid enters the flow guiding mechanism, and the gap between two rotating plates in the same group is the concentration point of fluid flow. Due to the obstruction of the two rotating plates, the fluid more easily concentrates and flows into this gap. The multiple sets of rotating plate groups guide the liquid to gradually form a spiral rotating flow during the flow process. By allowing the main liquid and the makeup liquid to swirl and mix within the pipe, the liquid is further uniformly mixed.

[0010] In a specific embodiment of this utility model: a sieve plate is provided behind the flow guiding mechanism inside the pipe, and the sieve plate is provided with sieve holes. In this way, when the rotating mixture flows through the sieve plate, the liquid is dispersed and can be fully mixed.

[0011] In a specific embodiment of this utility model: the aperture of the sieve hole is 0.5mm.

[0012] In a specific embodiment of this utility model: a conical inner tube is provided behind the sieve plate inside the pipeline. The inner tube has an inlet and an outlet, and the diameter of the inlet is larger than the diameter of the outlet. In this way, by increasing the pressure inside the inner tube, the generation of bubbles is reduced, and the mixing degree is further increased.

[0013] In a specific embodiment of this utility model: the ratio of the inlet diameter to the outlet diameter of the inner tube is 4:3.

[0014] In summary, this invention enables liquids to mix thoroughly and eliminates air bubbles. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of an online mixer according to this utility model;

[0017] Figure 2 This is a side view of the mixer of this utility model;

[0018] Figure 3 This is a schematic diagram of the stirring mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the drainage mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the sieve plate of this utility model. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 and Figure 3 As shown, this utility model is an online mixer, including a hollow pipe 10. The pipe 10 has an inlet 101 and an outlet 102, and a replenishment port 103 is provided on the side near the inlet 101. A stirring mechanism 20 for stirring the arriving liquid is provided inside the pipe 10, located behind the replenishment port 103.

[0023] In this embodiment, the stirring mechanism 20 includes a diversion fixing rod 21 and three mixing wheels 22 rotatably mounted on the diversion fixing rod 21. The blades 221 of adjacent mixing wheels 22 have opposite bending directions. The replenishment port is eccentric, with its center aligned with the tangent of the inlet 101 of the pipe 10. When replenishment enters the main liquid through the replenishment port, it enters tangentially and moves circumferentially under the action of the pipe's inner wall. After entering the pipe, the main liquid flows along the inner wall. Driven by the flow velocity of the main liquid, the replenishment acts like a spring, wrapping around the main liquid and flowing towards the outlet within the pipe. During this flow, the mixing wheels are driven by the pressure generated by the liquid flow and begin to rotate. The reaction force generated by the rotation of the mixing wheels 22, in turn, drives the flowing liquid to rotate, resulting in uniform mixing of the liquids. Secondly, the blades of the middle mixing wheel of the three mixing wheels bend in the opposite direction to the blades of the other two mixing wheels. This creates staggered mixing of the flowing liquid. When the liquid flows through the first mixing wheel, it flows in the direction of the blades' bending. Then, when it encounters the second mixing wheel, whose blades bend in the opposite direction, the liquid flow is guided to flow in the opposite direction. This process repeats, causing the liquid to flow in alternating directions within the pipe, thereby improving the uniformity of liquid mixing.

[0024] In this embodiment, each blade 221 of the middle mixing wheel 22 is bent in a clockwise direction, and each blade 221 of the two side mixing wheels 22 is bent in a counterclockwise direction.

[0025] In this embodiment, the diversion fixing rod 20 is fixed to the inner wall of the pipe 10 by a bracket. Multiple vertical blades 201, perpendicular to the diversion fixing rod, are distributed circumferentially on the outer wall of the front portion. Each vertical blade 201 is a sheet-like structure, thicker in the middle and thinner at both ends, with a symmetrical beveled surface at the front. The diversion fixing rod 20 has a conical head 202 at its front end and three annular grooves 203 spaced apart at its rear. Three mixing wheels 22 are rotatably mounted within the corresponding grooves 203. Thus, the conical head pushes the main liquid flowing through the middle outwards, while the vertical blades interfere with the liquid's flow direction, thereby increasing the mixing degree between the main liquid and the secondary liquid.

[0026] Combination Figure 4 As shown, in this embodiment, a flow guiding mechanism 30 is provided inside the pipe 10, located behind the stirring mechanism 20, for guiding and rotating the incoming liquid to mix it. This flow guiding mechanism 30 includes three sets of spaced-apart rotating plate groups. Each rotating plate group consists of a pair of rotationally symmetrical rotating plates 31. The rotating plates 31 are welded to the inner wall of the pipe. Thus, when liquid flows into the flow guiding mechanism 30, the gap between the two rotating plates in the same group is the concentration point of the fluid flow. Under the obstruction of the two rotating plates, the fluid is more likely to concentrate and flow into this gap. Multiple sets of rotating plate groups 31 guide the liquid to gradually form a spiral rotating flow during the flow process. By allowing the main liquid and the makeup liquid to swirl and mix inside the pipe, the liquid is further uniformly mixed.

[0027] Combination Figure 5 As shown, in this embodiment, a sieve plate 40 is provided inside the pipe 10 behind the flow guiding mechanism 30. The sieve plate 40 has sieve holes 41 distributed on it. The diameter of the sieve holes is 0.5 mm. Thus, when the rotating mixture flows through the sieve plate 40, the liquid is dispersed and thoroughly mixed. The sieve plate 40 is welded to the inner wall of the pipe 10.

[0028] In this embodiment, there are 3 sieve plates 40, which are spaced apart along the length of the pipe 10.

[0029] like Figure 1As shown, in this embodiment, a tapered inner tube 50 is provided inside the pipe 10 behind the sieve plate 40. The inner tube 50 has an inlet 501 and an outlet 502. The diameter of the inlet 501 is larger than the diameter of the outlet 502. The inner tube 50 is welded to the inner wall of the pipe. In this way, by increasing the pressure inside the inner tube, the air bubbles generated when the liquid is dispersed and mixed by the sieve plate 40 are reduced, and the mixing degree is further increased. The ratio of the diameter of the inlet 501 to the diameter of the outlet 502 is 4:3. There are two inner tubes, which are spaced apart along the length of the pipe 10.

[0030] In summary, this invention enables liquids to be fully mixed and eliminates air bubbles.

[0031] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An online mixer, comprising a pipe having an inlet and an outlet, a replenishment port located on the side near the inlet, and a stirring mechanism for stirring the arriving liquid located inside the pipe behind the replenishment port, characterized in that, The stirring mechanism includes a flow-dividing fixing rod and multiple mixing wheels. The outer wall of the front part of the flow-dividing fixing rod has multiple vertical blades distributed circumferentially, a conical head at the front end, and multiple annular grooves spaced apart at the rear. Each mixing wheel can be rotatably installed in the corresponding groove, wherein the blades of two adjacent mixing wheels have opposite bending directions.

2. The online mixer according to claim 1, characterized in that, The mixing wheel consists of three parts. The blades of the middle mixing wheel are all bent in a clockwise direction, while the blades of the two side mixing wheels are all bent in a counterclockwise direction.

3. The online mixer according to claim 1, characterized in that, The vertical blade is a sheet-like structure that is thick in the middle and thin at both ends, with a symmetrical oblique cut at the front.

4. The online mixer according to claim 1, characterized in that, The pipeline is also equipped with a flow guiding mechanism located behind the stirring mechanism for guiding the incoming liquid to rotate and mix it. The flow guiding mechanism includes multiple sets of spaced rotating plate groups, each of which consists of a pair of rotationally symmetrical rotating plates.

5. The online mixer according to claim 4, characterized in that, A sieve plate with sieve holes is provided inside the pipe behind the diversion mechanism.

6. The online mixer according to claim 5, characterized in that, The aperture of the sieve is 0.5 mm.

7. The online mixer according to claim 5, characterized in that, The pipe has a conical inner tube located behind the sieve plate. The inner tube has an inlet and an outlet, and the diameter of the inlet is larger than the diameter of the outlet.

8. The online mixer according to claim 7, characterized in that, The ratio of the inlet diameter to the outlet diameter of the inner tube is 4:3.

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