A static mixer with infinitely adjustable mixing intensity and a method for operating the same

Abstract

This invention discloses a static mixer with steplessly adjustable mixing intensity and its operating method. The static mixer includes a premixing section, a regulator, and a fine mixing section. The regulator is connected between the premixing section and the fine mixing section. The premixing section is located at the feed end of the regulator, through which the material to be mixed enters. The fine mixing section is located at the discharge end of the regulator, through which the mixed material is discharged. The fine mixing section includes a main pipe housing and multiple static mixer tubes arranged longitudinally parallel within the main pipe housing, each independently connected to both ends of the main pipe housing. The regulator can adjust the cross-sectional area of ​​the material passing through the main pipe housing. This invention enables stepless adjustment of the mixing intensity of the static mixer.

Description

Technical Field

[0001] This invention relates to the field of static mixer technology, and in particular to a static mixer with infinitely adjustable mixing intensity and its operating method. Background Technology

[0002] A static mixer is an advanced unit device with no moving parts. Its structure mainly consists of mixing elements, pipes, and an inlet. Depending on the needs, the mixing elements can take various forms, such as tube bundles, plates, blocks, mesh, and corrugated plates. In a static mixer, fluids flow through various mixing elements, undergoing processes such as dispersion, positional shifts, and re-merging to achieve good dispersion and thorough mixing between different fluids. As different fluids flow through the static mixer, they are constrained by the structure of the mixing elements, resulting in flow splitting, merging, rotation, and direction changes, ensuring thorough mixing. Static mixers are characterized by good mixing effect, low energy consumption, low investment, and easy maintenance. Static mixers have been applied in industries such as chemical, food, and textiles, achieving good results.

[0003] The mixing intensity of a static mixer is directly proportional to the square of the flow rate or velocity, and is a function of the fluid's viscosity and temperature. The mixing intensity Y = f(QTV) = f(ΔP). Therefore, its mixing intensity Y fluctuates with the flow rate (velocity), fluid temperature, and fluid viscosity. In situations requiring precise control of mixing intensity, or where fluid flow rate and temperature fluctuate significantly, a single static mixer cannot achieve a suitable mixing intensity. To address these shortcomings, the applicant has developed a mixer group consisting of multiple static mixers connected in series and parallel. This mixer group achieves stepped adjustment of the pressure difference across the static mixer group, broadening its application range. However, this mixer group is large in size, expensive, inconvenient to adjust, untimely to adjust, and the adjusted pressure difference is discontinuous, making it difficult to achieve automatic continuous stepless adjustment.

[0004] To overcome the above problems, a static mixer with infinitely adjustable mixing intensity and its working method are needed. Summary of the Invention

[0005] The purpose of this invention is to provide a static mixer with stepless adjustable mixing intensity and its working method, which can realize stepless adjustment of the mixing intensity of the static mixer.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This invention discloses a static mixer with infinitely adjustable mixing intensity, comprising a premixing section, a regulator, and a fine mixing section. The regulator is connected between the premixing section and the fine mixing section. The premixing section is located at the feed end of the regulator, through which the material to be mixed enters. The fine mixing section is located at the discharge end of the regulator, through which the mixed material is discharged. The fine mixing section includes a main pipe housing and multiple static mixer tubes. Multiple static mixer tubes are arranged longitudinally parallel within the main pipe housing, and each static mixer tube is independently connected to both ends of the main pipe housing. The regulator can adjust the cross-sectional area of ​​the material passing through the main pipe housing.

[0008] Furthermore, the regulator specifically adopts a gate valve including a valve body, a gate, and an actuator. The inner end of the main pipe housing is fixedly connected to the outlet of the valve body, and the liquid inlet of the single tube of the static mixer is sealed and attached to the back of the gate.

[0009] Furthermore, the two ends of the main pipe housing are sealed and supported by a perforated plate to the inlet and outlet ends of the single tube of the static mixer; a sealing layer is laminated on the outer wall of the perforated plate facing the gate.

[0010] Furthermore, the actuator of the gate valve is one of a handwheel, a pneumatic component, or an electric component.

[0011] Furthermore, the premixing section specifically employs a large-diameter single-tube static mixer.

[0012] Furthermore, the premixing section is provided with a feeding section at its front end. The feeding section includes a main feeding pipe joint and an auxiliary feeding pipe joint. The main feeding pipe joint is coaxially arranged with the premixing section, and the auxiliary feeding pipe joint is vertically connected to the outer wall of the main feeding pipe joint.

[0013] Furthermore, the inner end of the auxiliary material pipe connector is inserted into the centerline of the main feed pipe connector, and the inner end of the auxiliary material pipe connector is oblique and faces the material inlet direction.

[0014] Furthermore, the auxiliary material pipe joints are two or more and are arranged in parallel above the main feed pipe joint.

[0015] Furthermore, it also includes a first pressure sensor and a second pressure sensor, the first pressure sensor being disposed on the rear end sidewall of the premixing section, and the second pressure sensor being disposed on the discharge end sidewall of the fine mixing section; the first pressure sensor and the second pressure sensor are electrically connected to the controller of the regulator.

[0016] The present invention also discloses a method for operating a static mixer with stepless adjustable mixing intensity, wherein the static mixer with stepless adjustable mixing intensity described in any one of the above-mentioned methods is used to mix two or more liquid materials, and high-quality mixing is achieved by steplessly controlling the mixing intensity.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0018] This invention relates to a static mixer with stepless adjustable mixing intensity. By separating the premixing and fine mixing sections, it allows for the premixing of multiple media materials, ensuring a more uniform and continuous supply before reaching the fine mixing section, allowing the materials to pass through in a predetermined ratio. The fine mixing section precisely mixes the various media, achieving a uniform mixture of particles. By adjusting the cross-sectional area of ​​the material flow through the main pipe housing using a regulator, it is possible to adjust the flow rate of the material through a single pipe of the static mixer, thereby achieving stepless adjustment of the mixing intensity. This invention provides a static mixer with stepless adjustable mixing intensity, enabling stepless adjustment of the mixing intensity.

[0019] Furthermore, by employing a gate valve regulator, the flow of material through the fine mixing section is controlled by adjusting the gate opening, utilizing existing gate valves. This simplifies the structure and significantly reduces integrated manufacturing costs. By sealing the inlet of the static mixer tube against the back of the gate, material flow is prevented from entering the unexposed static mixer tube at the inlet end. A sealing layer on the outer wall of the tube sheet further enhances the sealing effect, preventing cross-flow between adjacent static mixer tubes even under pressure. A feeding section allows for the simultaneous introduction of main and auxiliary materials via the main feed pipe joint and auxiliary feed pipe joint, facilitating subsequent mixing. A properly designed insertion depth and angled opening towards the incoming material direction in the auxiliary feed pipe joint allow for the dispersed introduction of auxiliary materials in the middle of the main material flow, achieving initial mixing upon feeding. Multiple auxiliary feed pipe joints enable the mixing of various materials or the selection of materials, expanding the applicability of this invention. By setting up a first pressure sensor and a second pressure sensor, the pressure of the material flow before and after the fine mixing section can be collected, and the pressure difference between the two points can be fed back to the controller of the regulator. The controller issues a command to adjust the gate opening, which truly achieves closed-loop control and improves the control accuracy of mixing intensity. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the main structure of the static mixer with infinitely adjustable mixing intensity according to the present invention;

[0022] Figure 2 This is a schematic diagram of the horizontal end face of the fine mixing section and the gate in the closed state of the present invention;

[0023] Figure 3 This is a schematic diagram of the horizontal end face of the fine mixing section and the gate in a half-open state according to the present invention.

[0024] Figure 4 This is a schematic diagram of the horizontal end face of the fine mixing section and the gate in the fully open state of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Premixing section; 2. Regulator; 201. Gate; 202. Actuator; 3. Fine mixing section; 301. Static mixer single tube; 302. Perforated plate; 303. Discharge port; 4. Feeding section; 401. Main feed pipe connector; 402. Auxiliary feed pipe connector; 5. First pressure sensor; 6. Second pressure sensor. Detailed Implementation

[0026] The core of this invention is to provide a static mixer with stepless adjustable mixing intensity and its working method, which can realize stepless adjustment of the mixing intensity of the static mixer.

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Refer to the attached diagram. Figure 1 This is a schematic diagram of the main structure of the static mixer with infinitely adjustable mixing intensity according to the present invention; Figure 2 This is a schematic diagram of the horizontal end face of the fine mixing section and the gate in the closed state of the present invention; Figure 3 This is a schematic diagram of the horizontal end face of the fine mixing section and the gate in a half-open state according to the present invention. Figure 4 This is a schematic diagram of the horizontal end face of the fine mixing section and the gate in the fully open state of the present invention.

[0030] In one specific implementation, such as Figures 1-4As shown, the static mixer with infinitely adjustable mixing intensity of the present invention includes a premixing section 1, a regulator 2, and a fine mixing section 3. The regulator 2 is connected between the premixing section 1 and the fine mixing section 3. The premixing section 1 is located at the feed end of the regulator 2, and the materials to be mixed enter from the premixing section 1. The fine mixing section 3 is located at the discharge end of the regulator 2, and the mixed materials are discharged after passing through the fine mixing section 3. That is, the raw materials to be mixed enter from the feed end of the premixing section 1, undergo preliminary mixing in the premixing section 1 to ensure uniform distribution of various media, and then enter the fine mixing section 3 for dispersion and fine mixing after passing through the regulator 2. Finally, the mixed materials are discharged from the discharge end. The fine mixing section 3 includes a main pipe shell and static mixer single pipes 301. Multiple static mixer single pipes 301 are arranged longitudinally parallel within the main pipe shell, and each static mixer single pipe 301 is independently connected to both ends of the main pipe shell. The regulator 2 can adjust the cross-sectional area of ​​the material passing through the main pipe shell.

[0031] By separating the premixing section 1 and the fine mixing section 3, the various media materials to be mixed can be premixed, ensuring a more uniform and continuous supply of materials before entering the fine mixing section 3, allowing them to pass through the fine mixing section 3 in a set ratio. The fine mixing section 3 precisely mixes the various media, achieving a uniform mixture of particles. The regulator 2 adjusts the cross-sectional area of ​​the material flow through the main pipe housing, meaning only a portion of the static mixer single pipe 301 may need to enter the fine mixing operation. This allows for adjustment of the flow rate of the material through the static mixer single pipe 301, thereby adjusting the mixing intensity. The stepless adjustment of the regulator 2 enables stepless adjustment of the mixing intensity. This invention provides a static mixer with stepless adjustable mixing intensity, enabling stepless adjustment of the mixing intensity of the static mixer.

[0032] In one specific embodiment of the present invention, such as Figure 1 As shown, the regulator 2 specifically adopts a gate valve. The regulator 2 includes a valve body, a gate 201, and an actuator 202. The inner end of the main pipe housing is welded to the outlet of the valve body. When the gate valve is closed, the inlet of the static mixer single pipe 301 is sealed against the back of the gate 201. That is, the inner end of the main pipe housing extends into the valve cavity of the gate valve and is sealed and welded together.

[0033] Obviously, the regulator 2 can also control the material flow rate by installing an electrically controlled valve on each static mixer tube 301 individually. A sufficient number of static mixer tubes 301 are needed to achieve stepless adjustment of the mixing intensity. Similar structural modifications also fall within the scope of this invention.

[0034] Specifically, such as Figures 1-4As shown, the two ends of the main pipe housing are sealed and supported by the tube plate 302 at the inlet and outlet ends of the static mixer single tube 301. The tube plate 302 is an end plate with multiple through holes. The static mixer single tube 301 passes through the through holes and is welded and sealed, and then ground smooth. A sealing layer is laminated on the outer wall of the tube plate 302 facing the gate 201. The sealing layer is made of corrosion-resistant plastic or rubber material and is processed by vulcanized rubber or hot melt spraying. The shape of the main pipe housing can be any one of round tube, square tube, or prismatic tube. Similar simple changes in cross-sectional shape fall within the protection scope of this invention.

[0035] Specifically, such as Figure 1 As shown, the actuator 202 of the gate valve adopts one of the following: a handwheel, a pneumatic component, or an electric component. That is, similar to existing gate valves, the opening degree of the gate 201 can be infinitely adjusted in various ways.

[0036] By employing a gate valve regulator 2, the flow of material through the fine mixing section 3 is controlled by adjusting the opening of the gate 201, utilizing an existing gate valve. This results in a simple structure and significantly reduces integrated manufacturing costs. By sealing the inlet of the static mixer single tube 301 against the back of the gate 201, material flow is prevented from entering the static mixer single tube 301 not exposed by the gate 201 at the inlet end. Furthermore, a sealing layer on the outer wall of the tube sheet 302 enhances the sealing effect, preventing cross-flow between adjacent static mixer single tubes 301 even under certain pressure.

[0037] In one specific embodiment of the present invention, such as Figure 1 As shown, the premixing section 1 specifically adopts a large-diameter single-tube static mixer, which is equipped with two or more mixing blade units.

[0038] Specifically, such as Figure 1 As shown, a feeding section 4 is provided at the front end of the premixing section 1. The feeding section 4 includes a main feeding pipe connector 401 and an auxiliary feeding pipe connector 402. The main feeding pipe connector 401 is coaxially arranged with the premixing section 1, and the auxiliary feeding pipe connector 402 is vertically connected to the outer wall of the main feeding pipe connector 401. Both the main feeding pipe connector 401 and the auxiliary feeding pipe connector 402 are provided with connecting flanges at their outer ends.

[0039] Specifically, such as Figure 1 As shown, the inner end of the auxiliary material pipe connector 402 is inserted into the center line position of the main feed pipe connector 401, and the inner end of the auxiliary material pipe connector 402 is oblique and faces the material inlet direction.

[0040] Specifically, such as Figure 1 As shown, there are two or more auxiliary material pipe joints 402, which are arranged in parallel above the main feed pipe joint 401.

[0041] By setting up a feeding section 4, the main material and auxiliary material are introduced simultaneously by the main feeding pipe joint 401 and the auxiliary material pipe joint 402, which facilitates subsequent mixing. By reasonably setting the insertion depth of the inner end of the auxiliary material pipe joint 402 and setting an oblique opening facing the material direction, the auxiliary material can be introduced in a dispersed manner in the middle of the main material flow, and the feeding achieves preliminary mixing. By setting up multiple auxiliary material pipe joints 402, multiple materials or selected materials can be mixed, which expands the scope of application of the present invention.

[0042] In one specific embodiment of the present invention, such as Figure 1 As shown, the static mixer with infinitely adjustable mixing intensity of the present invention further includes a first pressure sensor 5 and a second pressure sensor 6. The first pressure sensor 5 is disposed on the rear end side wall of the premixing section 1, and the second pressure sensor 6 is disposed on the discharge end side wall of the fine mixing section 3. The first pressure sensor 5 and the second pressure sensor 6 are electrically connected to the controller of the regulator 2.

[0043] By setting the first pressure sensor 5 and the second pressure sensor 6, the pressure of the material flow before and after the fine mixing section 3 can be collected, and the pressure difference between the two points is fed back to the controller of the regulator 2. The controller issues a command to adjust the opening of the gate 201, which truly achieves closed-loop control and improves the control accuracy of the mixing intensity.

[0044] The working process of the static mixer with infinitely adjustable mixing intensity of the present invention is as follows: Main material medium A is introduced through the feed pipe connector 401, and auxiliary material medium B and / or medium C are introduced through the auxiliary material connector 402. Medium B and / or medium C disperse towards the material flow of medium A at the angled opening of the auxiliary material connector 402 at the center of the main feed pipe connector 401. Under the impact of medium A, medium B and / or medium C are initially dispersed and mixed. When the material flow composed of various media passes through the premixing section 1, it is repeatedly divided, reversed, twisted, and merged by multiple mixing blade units in the premixing section 1 to achieve initial homogeneous mixing. When the initially homogeneous material flow passes through the gate valve of the regulator 2, it can only pass through the static mixer single pipe 301 partially opened by the gate 201. By adjusting the opening degree of the gate 201, the cross-sectional area of ​​the material flow through the fine mixing section 3 is controlled, thus controlling the flow velocity of the material flow through the static mixer single pipe 301 and achieving a suitable mixing intensity. After passing through the static mixer single tube 301, the various media particles in the material flow are fully dispersed together, achieving the mixing requirements. Finally, the material is discharged from the outlet of the fine mixing section 3 and enters the next station. When the liquid pressure at both ends of the fine mixing section 3 changes significantly, the first pressure sensor 5 and the second pressure sensor 6 feed back the pressure difference between the two points to the controller of the regulator 2. The controller issues a command to adjust the opening of the gate 201, truly achieving closed-loop control, ensuring that the mixing intensity remains consistent, and thus ensuring consistent mixing quality.

[0045] This invention relates to a static mixer with stepless adjustable mixing intensity. By separating the premixing section 1 and the fine mixing section 3, multiple media materials to be mixed can be premixed, ensuring a more uniform and continuous supply of materials before entering the fine mixing section 3, allowing them to pass through the fine mixing section 3 in a set proportion. The fine mixing section 3 precisely mixes the various media, achieving a uniform mixture of particles. The cross-sectional area of ​​the material flow through the main pipe housing is adjusted by the regulator 2. This means that only a portion of the static mixer's single pipe 301 may need to enter the fine mixing operation, thus adjusting the flow rate of the material through the single pipe 301 and thereby adjusting the mixing intensity. The stepless adjustment of the regulator 2 achieves stepless adjustment of the mixing intensity. This invention's stepless adjustable mixing intensity static mixer enables stepless adjustment of the mixing intensity. Furthermore, by employing a gate valve regulator 2, the cross-sectional area of ​​the material flow through the fine mixing section 3 is adjusted by changing the opening of the gate 201, resulting in a simple structure and significantly reduced integrated manufacturing costs. By sealing the inlet of the static mixer single tube 301 to the back of the gate 201, material flow at the inlet end can be prevented from entering the static mixer single tube 301 not exposed by the gate 201. A sealing layer on the outer wall of the tube sheet 302 improves the sealing effect, preventing cross-flow between adjacent static mixer single tubes 301 even under certain pressure. The feed section 4 allows for the simultaneous introduction of main and auxiliary materials via the main feed pipe connector 401 and auxiliary feed pipe connector 402, facilitating subsequent mixing. By appropriately setting the insertion depth of the auxiliary feed pipe connector 402 and providing an angled opening facing the incoming material direction, auxiliary materials can be introduced in a dispersed manner in the middle of the main material flow, achieving initial mixing upon feeding. The use of multiple auxiliary feed pipe connectors 402 enables the mixing of various materials or selected materials, expanding the applicability of this invention. By setting the first pressure sensor 5 and the second pressure sensor 6, the pressure of the material flow before and after the fine mixing section 3 can be collected, and the pressure difference between the two points is fed back to the controller of the regulator 2. The controller issues a command to adjust the opening of the gate 201, which truly achieves closed-loop control and improves the control accuracy of the mixing intensity.

[0046] The present invention also discloses a method for operating a static mixer with stepless adjustable mixing intensity. The static mixer with stepless adjustable mixing intensity described in any of the above embodiments is used to mix two or more liquid materials, and high-quality mixing is achieved by steplessly controlling the mixing intensity.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0048] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A static mixer with infinitely adjustable mixing intensity, characterized in that, The system includes a premixing section (1), a regulator (2), and a fine mixing section (3). The regulator (2) is connected between the premixing section (1) and the fine mixing section (3). The premixing section (1) is located at the feed end of the regulator (2), and the material to be mixed enters from the premixing section (1). The fine mixing section (3) is located at the discharge end of the regulator (2), and the mixed material is discharged after passing through the fine mixing section (3). The fine mixing section (3) includes a main pipe shell and a static mixer single tube (301). Multiple static mixer single tubes (301) are arranged longitudinally parallel inside the main pipe shell, and each static mixer single tube (301) is independently connected to both ends of the main pipe shell. The regulator (2) can adjust the cross-sectional area of ​​the material passing through the main pipe shell. The regulator (2) specifically adopts a gate valve including a valve body, a gate (201) and an actuator (202). The inner end of the main pipe housing is fixedly connected to the outlet of the valve body, and the liquid inlet of the static mixer single pipe (301) is sealed and attached to the back of the gate (201).

2. The static mixer with infinitely adjustable mixing intensity according to claim 1, characterized in that: The two ends of the main casing are sealed and supported by the tube plate (302) to the inlet and outlet ends of the static mixer single tube (301); the outer wall of the tube plate (302) facing the gate (201) is coated with a sealing layer that matches the back of the gate (201).

3. The static mixer with infinitely adjustable mixing intensity according to claim 1, characterized in that: The actuator (202) of the gate valve is one of a handwheel, a pneumatic component, or an electric component.

4. The static mixer with infinitely adjustable mixing intensity according to claim 1, characterized in that: The premixing section (1) specifically adopts a large-diameter single-tube static mixer.

5. The static mixer with infinitely adjustable mixing intensity according to claim 4, characterized in that, The premixing section (1) is provided with a feeding section (4) at its front end. The feeding section (4) includes a main feeding pipe connector (401) and an auxiliary feeding pipe connector (402). The main feeding pipe connector (401) is coaxially arranged with the premixing section (1), and the auxiliary feeding pipe connector (402) is vertically connected to the outer wall of the main feeding pipe connector (401).

6. The static mixer with infinitely adjustable mixing intensity according to claim 5, characterized in that: The inner end of the auxiliary material pipe connector (402) is inserted into the center line position of the main feed pipe connector (401), and the inner end of the auxiliary material pipe connector (402) is oblique and faces the material feeding direction.

7. The static mixer with infinitely adjustable mixing intensity according to claim 5 or 6, characterized in that: The number of auxiliary material pipe joints (402) is two or more and they are arranged in parallel above the main feed pipe joint (401).

8. The static mixer with infinitely adjustable mixing intensity according to claim 1, characterized in that: It also includes a first pressure sensor (5) and a second pressure sensor (6), the first pressure sensor (5) being disposed on the rear end side wall of the premixing section (1) and the second pressure sensor (6) being disposed on the discharge end side wall of the fine mixing section (3); the first pressure sensor (5) and the second pressure sensor (6) are electrically connected to the controller of the regulator (2).

9. A method for operating a static mixer with infinitely adjustable mixing intensity, characterized in that: The static mixer with infinitely adjustable mixing intensity described in any one of claims 1 to 8 is used to mix two or more liquid materials, and high-quality mixing is achieved by infinitely controlling the mixing intensity.

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