Chemical reaction device based on combination of ultrasound and mechanical energy

Abstract

The invention discloses a chemical reaction device based on combination of ultrasound and mechanical energy. Belongs to the technical field of mutual intersection of ultrasound, chemical reaction, structural materials and motor driving. The ultrasonic amplitude rod is connected to the inner wall of the reaction cavity; the piezoelectric plate is connected to the outer wall of the reaction cavity; the battery is connected to the platform, and the piezoelectric plate is connected to the battery through the switch; the stirring rotating shaft is vertically connected to the reaction cavity cover; the motor is connected with the stirring rotating shaft through a helical gear pair; when the switch is pressed down, the battery continuously supplies power to the piezoelectric plate, and when the negative pressure of sound waves reaches a certain degree, cavitation bubbles which expand and contract along with the action of the sound waves can be formed in the liquid; after the motor is started, electric energy is converted into mechanical energy to drive the stirring rotating shaft to rotate. The chemical reaction efficiency is improved in a mode of combining ultrasonic and mechanical energy, and the device has the characteristics of easiness in miniaturization, easiness in cleaning, easiness in treatment and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of the intersection of ultrasound, chemical reaction, structural materials and motor drive, and relates to a chemical reaction device based on the combination of ultrasound and mechanical energy. Background Art

[0002] The development of chemical reaction equipment has been accompanied by the continuous progress of chemical and engineering disciplines. From the early simple reactors to today's efficient reactors, technological innovation has promoted the complexity and diversity of equipment design. The application of modern instruments, such as computer simulation, process automation and advanced materials science, has made the control and optimization of chemical reaction processes more precise. However, with the advancement of industrialization, especially in the petrochemical, pharmaceutical and food processing industries, the demand for chemical reaction equipment has continued to increase. Enterprises need more efficient, more economical and safer reaction equipment to meet the needs of expanding production scale and diversifying products. The shortcomings of traditional chemical reaction equipment have also gradually been exposed, and the first one is that the reaction efficiency is not enough to meet industrial needs.

[0003] At present, there are some methods to address the shortcoming of low reaction efficiency; a Chinese patent (patent number: CN202310143733.X) provides a synergistic catalytic reactor of photocatalytic cold plasma. Although this reactor solves the problem of low reaction efficiency, its temperature control using cooling water is only suitable for low-temperature reactions, and the reaction heat cannot be utilized, resulting in energy waste, which is not energy-saving and environmentally friendly.

[0004] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Summary of the invention

[0005] In view of the above problems, the present invention aims to propose a chemical reaction device based on the combination of ultrasound and mechanical energy.

[0006] The technical solution of the present invention is: a chemical reaction device based on the combination of ultrasound and mechanical energy; comprising a platform of the overall device,

[0007] A reaction chamber is arranged in the middle of the upper wall of the platform of the overall device, a bracket is arranged at the upper end of one side of the reaction chamber, the bottom of the bracket is connected to the platform, and a motor is arranged on the bracket.

[0008] Furthermore, batteries are installed on the platform, and the types of the batteries include but are not limited to cylindrical batteries, square batteries and storage batteries.

[0009] Furthermore, the piezoelectric sheet is bonded to the outer wall of the reaction chamber by epoxy resin;

[0010] The ultrasonic amplitude rod is bonded to the inner wall of the reaction chamber by epoxy resin;

[0011] The cross section of the ultrasonic amplitude rod is usually in the shape of a Russian doll, that is, a circular ring is evenly divided into a number of equal parts, and can also be in the shape of a cross or a square.

[0012] Furthermore, the excitation frequency, initial phase, vibration amplitude, waveform and other parameters of the piezoelectric sheets are adjustable;

[0013] Among them, the excitation frequency is greater than or equal to 20kHz, and the vibration amplitude is at the micron or sub-millimeter level;

[0014] The materials used to make it include but are not limited to piezoelectric ceramics, single crystals, composite materials and magnetostrictive materials.

[0015] Furthermore, a switch is provided on the platform, one end of which is connected to the battery through a cable, and the other end is connected to the piezoelectric sheet through a wire, and the wire is usually made of copper. When the switch is pressed down, the piezoelectric sheet is powered, and vice versa, the power supply is stopped by pulling the switch back.

[0016] Furthermore, a direct current is provided inside the motor, and a motor switch is provided at the tail of the motor, and the motor can be started by clicking the motor switch, so that the shaft at the front end of the motor rotates;

[0017] The motor's power, speed, torque and other parameters can be adjusted freely.

[0018] Furthermore, the motor is connected to the stirring shaft through a pair of mutually perpendicular helical gear pairs, and a gear box is provided outside the pair of helical gear pairs;

[0019] Several rows of blades are arranged on the stirring shaft, and the shapes of the blades include but are not limited to square, fan-shaped, and sawtooth.

[0020] Furthermore, the reaction chamber is made of corrosion-resistant materials, including but not limited to glass, polymer materials or hydrophilic and hydrophobic materials, and its shape includes but is not limited to a cuboid, a cylinder, a sphere, etc.;

[0021] The volume of the reaction chamber is 250ml-300ml;

[0022] The types of solutions in the reaction chamber include but are not limited to organic electrolyte solutions and inorganic electrolyte solutions;

[0023] Wherein, electrolyte solutions include but are not limited to glucose, lactate, urea, etc.;

[0024] The inorganic electrolyte solution includes but is not limited to sodium chloride, ammonium chloride, potassium hydroxide and the like.

[0025] The beneficial effects of the present invention are: 1. Simple structure, low cost, good stability, low difficulty in use, and conducive to wide application; 2. Combining ultrasonic cavitation effect and mechanical energy, lower energy consumption and better safety; 3. Applying acoustic superstructures to the miniaturization development of stirring devices can provide possibilities for it, help promote its practical application, and provide a theoretical basis for its commercialization. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal structure of the reaction chamber in the present invention;

[0028] Figure 3 is a top view of the reaction chamber of the present invention;

[0029] In the figure, 1 is a piezoelectric sheet, 2 is a reaction chamber, 3 is a platform, 301 is a bracket, 4 is an ultrasonic amplitude rod, 5 is a battery, 6 is a switch, 7 is a wire, 8 is a stirring shaft, 9 is a motor, 901 is a bearing, and 902 is a helical gear pair. DETAILED DESCRIPTION

[0030] The specific technical scheme of the present invention is further described in detail below with reference to specific examples.

[0031] As shown in the figure, a stirring method and device based on the combination of ultrasound and mechanical energy described in the present invention includes a piezoelectric sheet 1, a reaction chamber 2, a platform 3, an ultrasonic amplitude rod 4, a battery 5, a switch 6, a wire 7, a stirring shaft 8 and a motor 9;

[0032] The ultrasonic amplitude rod 4 is connected to the inner wall of the reaction chamber 2;

[0033] The piezoelectric sheet 1 is connected to the outer wall of the reaction chamber 2;

[0034] The battery 5 is connected to the platform 3, and the piezoelectric sheet 1 is connected to the battery 5 via a switch 6;

[0035] The stirring shaft 8 is vertically connected to the reaction chamber cover, and the motor 9 is connected to the stirring shaft 8 through a pair of helical gear pairs 902 to control its rotation.

[0036] When the switch is pressed, the battery 5 continuously supplies power to the piezoelectric sheet 1, and the ultrasonic signal generated by the piezoelectric sheet 1 is transmitted to the ultrasonic amplitude rod 4. The output end of the ultrasonic amplitude rod 4 propagates sound waves in the solution of the reaction chamber 2. When the negative pressure of the sound wave reaches a certain level, cavitation bubbles will be formed in the liquid, which will expand and contract with the action of the sound wave. When the cavitation bubbles collapse violently, acoustic microflows, jets and shock waves will be formed around them, thereby accelerating the chemical reaction rate of the solution.

[0037] At the same time, after the motor 9 is started, the electrical energy is converted into mechanical energy to drive the stirring shaft 8 to rotate, so that the reaction liquid is mixed more efficiently, which is convenient for accelerating the reaction rate.

[0038] In the present device, the support 301 is L-shaped, and a platform 3 is provided at the bottom of the support 301 (reaction chamber 2), and the battery 5 is connected to the platform 3. The types of the battery 5 include but are not limited to cylindrical batteries, square batteries and storage batteries.

[0039] The reaction chamber 2 is generally cylindrical and made of aluminum alloy. In this experiment, the bottom diameter and height of the tank are 60 cm and 50 cm respectively. The piezoelectric transducer (piezoelectric sheet 1) is bonded to the outer wall of the reaction chamber 2 by epoxy resin. It has a thickness of 3 cm, a diameter of φ8 cm, and a disc shape.

[0040] In the experiment, it can be known through the frequency sweep method that the resonant frequency of the piezoelectric transducer (piezoelectric sheet 1) is between 100kHz and 600kHz, and is used as the working frequency in the experiment.

[0041] The ultrasonic amplitude rod 4 is cut from a cylinder with a length of 40 cm and a cross-sectional diameter of 30 cm; the ultrasonic amplitude rod 4 is bonded to the inner wall of the reaction chamber 2 by epoxy resin, and the cross-section of the ultrasonic amplitude rod 4 is usually in the shape of a Russian doll, that is, a circular ring is evenly divided into several equal parts, and can also be a cross or a square.

[0042] The excitation frequency, initial phase, vibration amplitude, and waveform of the plurality of piezoelectric sheets 2 are adjustable, wherein the excitation frequency is greater than or equal to 20 kHz, and the vibration amplitude is at the micrometer or sub-millimeter level;

[0043] The materials used to make it include but are not limited to piezoelectric ceramics, single crystals, composite materials and magnetostrictive materials.

[0044] The platform 3 is provided with 4 switches, one end of which is connected to the battery 5 through a cable, and the other end is connected to the piezoelectric sheet 1 through a wire 7, and the wire 7 is usually made of copper;

[0045] When the switch is pressed down, the battery 5 continues to supply power to the piezoelectric sheet 1, and vice versa, the power supply is stopped by flipping the switch back;

[0046] The motor 9 is a DC servo motor with a power of 150-350kw;

[0047] The bottom of the motor 9 is provided with a base to ensure the safe operation of the motor 9;

[0048] The motor 9 is provided with direct current inside, and a motor switch is provided at the tail of the motor 9. The motor 9 can be started by clicking the switch to rotate the shaft at the front end of the motor 9. The power, speed, torque and other parameters of the motor can be freely adjusted.

[0049] The motor 9 is connected to the stirring shaft 8 through a pair of mutually perpendicular helical gear pairs 902, and a gear box is provided outside the pair of helical gear pairs 902; a bracket 301 is provided at the bottom of the motor 9 and is connected to the bottom platform 3 of the reaction chamber 2 as a support; several rows of blades are provided on the stirring shaft 8, and the shapes of the blades include but are not limited to square, fan-shaped, and sawtooth.

[0050] The reaction chamber 2 is detachably connected to the platform 3;

[0051] The reaction chamber 2 is made of corrosion-resistant materials, including but not limited to glass, polymer materials or hydrophilic and hydrophobic materials, and its shape includes but not limited to cuboid, cylinder, sphere, etc.;

[0052] The types of solutions in the reaction chamber 2 include, but are not limited to, organic electrolyte solutions and inorganic electrolyte solutions; wherein the electrolyte solutions include, but are not limited to, glucose, lactate, urea, etc. The inorganic electrolyte solutions include, but are not limited to, sodium chloride, ammonium chloride, potassium hydroxide, etc.

[0053] In this work, the solutions in the reaction chamber 2 are sodium chloride and silver nitrate solutions, with concentrations of 1 M, 2 M, 3 M, 4 M and 5 M. At the beginning of the experiment, 100 ml of sodium chloride and silver nitrate solutions are added to the reaction chamber 2, and the switch is pressed. The piezoelectric sheet 1 drives the ultrasonic amplitude rod 4 to propagate ultrasonic waves in the solution, and then the motor 5 is started to rotate the stirring shaft 8. After 5 minutes, the concentration of the obtained solution is recorded to determine the improvement of the chemical reaction rate by this method.

[0054] The acoustic flow field and micro / nano particle trajectory of this experiment are given by Figure 2 As shown, when the four ultrasonic amplitude rods 2 work simultaneously, a vortex will be formed in the center of the rapid mixing tank, and the remaining micro-nano particles will flow along the periphery of the four ultrasonic amplitude rods 4, thereby enhancing the mixing efficiency.

[0055] The invention can be widely used in the chemical and pharmaceutical fields. In the chemical field, the reaction of two liquids can be accelerated to prepare a new solution, thereby realizing the production of finished products. In the pharmaceutical field, the agent can quickly react with the dissolved substances or pollutants in the water to accelerate the degradation of pollutants, thereby achieving the desired water treatment effect. The present invention combines mechanical energy with ultrasonic cavitation theory. Compared with traditional chemical reaction devices, the reaction efficiency is higher, the safety is better, and it is more energy-saving and environmentally friendly.

Claims

1. A chemical reaction device based on the combination of ultrasound and mechanical energy, characterized in that: It comprises a platform (3), wherein a reaction chamber (2) is arranged in the middle of the upper wall of the platform (3). A support (301) connected to the platform (3) is arranged on one side of the reaction chamber (2), and a motor (9) is arranged on a partition at the upper end of the support (301). A direct current is provided inside the motor (9), and a motor switch is provided at the tail of the motor (9).

2. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 1, characterized in that: A bearing (901) is arranged on the motor (9), and a pair of mutually perpendicular helical gear pairs (902) are arranged at the other end of the bearing (901). A gear box is provided outside the helical gear pair (902), and several rows of blades are provided on the stirring shaft (902), wherein the shapes of the blades include but are not limited to square, fan-shaped or sawtooth-shaped.

3. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 2, characterized in that: A stirring shaft (8) is arranged inside the reaction chamber (2), and the motor (9) is connected to the stirring shaft (8) via a pair of helical gears (902) that are perpendicular to each other.

4. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 1, characterized in that: A plurality of piezoelectric sheets (1) are evenly arranged on the outer wall of the reaction chamber (2). The piezoelectric sheet (1) is bonded to the outer wall of the reaction chamber (2) by epoxy resin.

5. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 4, characterized in that: A plurality of ultrasonic amplitude rods (4) adapted to the piezoelectric sheet (1) are arranged on the inner wall of the reaction chamber (2). The ultrasonic amplitude rod (4) is bonded to the inner wall of the reaction chamber (2) by epoxy resin.

6. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 5, characterized in that: The cross section of the ultrasonic amplitude rod (4) is a shape in which a circular ring is evenly divided into a number of equal parts.

7. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 4, characterized in that: A plurality of batteries (5) are arranged on the platform (3) near the piezoelectric sheet (1); The types of the battery (5) include but are not limited to cylindrical batteries, square batteries and storage batteries.

8. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 7, characterized in that: A switch (6) is also arranged on the platform (3), one end of which is connected to the battery (5) via a cable, and the other end of which is connected to the piezoelectric sheet (1) via a wire (7); Wherein, the wire (7) is made of copper material.

9. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 4, characterized in that: The excitation frequency of the piezoelectric piece (1) is greater than or equal to 20 kHz, and its vibration amplitude is at the micrometer or sub-millimeter level; The materials used to make the magnetostrictive material include but are not limited to piezoelectric ceramics, single crystals, composite materials and magnetostrictive materials.

10. A chemical reaction device based on the combination of ultrasound and mechanical energy according to claim 1, characterized in that: The reaction chamber (2) is made of corrosion-resistant material; Its materials include but are not limited to glass, polymer materials or hydrophilic and hydrophobic materials; Its shape includes but is not limited to a cuboid, cylinder or sphere; The volume of the reaction chamber (2) is 250ml-300ml; The types of solutions in the reaction chamber (2) include, but are not limited to, organic electrolyte solutions and inorganic electrolyte solutions; Wherein, the electrolyte solution includes but is not limited to glucose, lactate or urea; The inorganic electrolyte solution includes, but is not limited to, sodium chloride, ammonium chloride or potassium hydroxide.

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