Hazardous waste stirring and mixing device

Abstract

The invention discloses a hazardous waste stirring and mixing device which comprises a stirring tank, and a feeding port and a discharging port are formed in the stirring tank; an annular motor is fixedly installed on the tank wall of the stirring tank, a mechanical limiting stopper is arranged on the inner wall of the stirring tank, the stirring tank is detachably connected with a plurality of stirring blades through the mechanical limiting stopper, the stirring blades and the annular motor are correspondingly arranged, and the annular motor interacts with permanent magnets of the stirring blades through a magnetic field; a control panel is mounted on the outer wall of the stirring tank and is used for controlling the power and the rotating speed of the annular motor. The hazardous waste stirring and mixing device provided by the invention is designed without a central shaft, so that mechanical wear is reduced, the reliability of equipment is improved, and the service life of the equipment is prolonged; the annular motor is directly driven, so that the stirring efficiency is improved, and the energy consumption is reduced; maintenance and cleaning are easy, and the maintenance cost is reduced; the design of the stirring blades can be adjusted according to the characteristics of the hazardous waste, and the adaptability of the stirring device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hazardous waste treatment equipment, and in particular to a hazardous waste stirring and mixing device. Background Art

[0002] Traditional hazardous waste mixing devices usually use shaft mixing, which has some inherent problems, such as large mechanical wear, high energy consumption, and difficult maintenance. These problems not only increase operating costs, but may also affect mixing efficiency and the safety of hazardous waste treatment.

[0003] Therefore, it is urgent to propose a new type of hazardous waste stirring device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a hazardous waste stirring and mixing device to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides a hazardous waste stirring and mixing device, comprising a stirring tank, which is provided with a feed port and a discharge port; a ring-shaped motor is fixedly installed on the tank wall of the stirring tank, a mechanical limiter is provided on the inner wall of the stirring tank, and the stirring tank is detachably connected to a plurality of stirring blades through the mechanical limiter, the stirring blades are arranged corresponding to the ring-shaped motor, and the permanent magnets of the ring-shaped motor and the stirring blades interact with each other through a magnetic field; a control panel is installed on the outer wall of the stirring tank, and the control panel is used to control the power and speed of the ring-shaped motor.

[0006] Preferably, a valve is installed on the discharge port of the stirring tank, and the discharge port of the stirring tank is connected to a collecting tank.

[0007] Preferably, a sensor is provided inside the stirring tank, and the sensor is used to monitor the stirring speed of the stirring blade and the mixing degree of the hazardous waste in the stirring tank in real time, and the sensor is electrically connected to the control panel.

[0008] Preferably, an observation window is provided on the tank wall of the stirring tank.

[0009] Preferably, a gas collection system is provided on the top of the stirring tank, and the gas collection system includes a filtering and adsorption device installed on the top of the stirring tank and a gas collection pipeline connected to the filtering and adsorption device.

[0010] Preferably, the method for using the device comprises the following steps:

[0011] Add the hazardous waste to be mixed into the mixing tank;

[0012] Select appropriate stirring blades according to the characteristics of hazardous waste and install them in the mixing tank;

[0013] The ring motor is started, and the magnetic field interacts with the permanent magnet in the stirring blade, driving the stirring blade fixed on the mechanical limiter to rotate and stir the hazardous waste;

[0014] The harmful gases generated during the mixing process are collected and treated through the gas collection system;

[0015] After the mixing is completed, the mixed hazardous waste is discharged into the collection tank by controlling the valve at the discharge port.

[0016] Preferably, before starting the ring motor, the method further comprises the following steps:

[0017] Pre-treat the environment in the mixing tank to adapt to the characteristics of the hazardous waste to be mixed;

[0018] Check the inside of the mixing tank through the observation window to ensure that the mixing blades are correctly installed and there are no foreign objects in the mixing tank.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] The hazardous waste stirring and mixing device provided by the present invention has a design without a central shaft, which reduces mechanical wear and improves the reliability and service life of the equipment; it is directly driven by a ring motor, which improves stirring efficiency and reduces energy consumption; it is easy to maintain and clean, and reduces maintenance costs; the design of the stirring blades can be adjusted according to the characteristics of the hazardous waste, thereby improving the adaptability of the stirring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the hazardous waste stirring and mixing device of the present invention;

[0023] Figure 2 This is a diagram showing the arrangement of the stirring blades in the stirring tank of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of a single stirring blade of the present invention;

[0025] Figure 4 Another structural schematic diagram of a single stirring blade of the present invention;

[0026] Figure 5 Another structural schematic diagram of a single stirring blade of the present invention;

[0027] In the figure: 1. Gas collection pipeline; 2. Filter adsorption device; 3. Observation window; 4. Ring motor; 5. Stirring blade; 6. Mechanical limiter; 7. Control panel; 8. Collection tank; 9. Stirring tank. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] like Figures 1 to 3 As shown, the present invention provides a hazardous waste stirring and mixing device, including a stirring tank 9, which is made of corrosion-resistant material and is provided with an anti-wear lining inside to adapt to the chemical properties of hazardous waste and enhance the durability and safety of the tank body. The stirring tank 9 is provided with a feed port and a discharge port; a ring motor 4 is fixedly installed on the tank wall of the stirring tank 9, and the ring motor 4 includes a plurality of embedded electromagnetic coils. When powered on, these coils generate a rotating magnetic field. A permanent magnet is embedded in the stirring blade 5. When the blade is placed in the magnetic field generated by the motor, the permanent magnet is affected by the rotating magnetic field and generates a synchronous rotating torque. By controlling the magnitude and frequency of the current, the intensity and speed of the rotating magnetic field can be adjusted, thereby accurately controlling the rotation speed and power output of the stirring blade 5. A mechanical stopper 6 is provided on the inner wall of the mixing tank 9. The mechanical stopper is composed of a series of annular brackets and fixed seats. The brackets are made of corrosion-resistant stainless steel or high-strength polymer materials and can withstand the impact and vibration generated during the mixing process. A plurality of radial limit grooves are designed on the limiter bracket, with the notches facing the center of the tank body. These grooves are used to embed the connecting parts of the mixing blades 5 and can provide initial support and stability when the motor is started. In order to further prevent the blades from shaking or shifting during the mixing process, elastic buffer pads are designed in the limit grooves. These buffer pads can absorb some vibrations and impacts and extend the service life of the equipment. The stirring tank 9 is detachably connected to a plurality of stirring blades 5 via a mechanical limiter 6. The mechanical limiter 6 can prevent the stirring blades 5 from being displaced due to their own weight or the pressure of the material in the stirring tank 9 when the motor is not started, thereby ensuring the positioning accuracy and safety of the stirring blades 5; the stirring blades 5 are made of high-strength polymer material and are designed to be detachable so as to be replaced or adjusted according to the characteristics of the hazardous waste. The stirring blades 5 are arranged corresponding to the annular motor 4, and the permanent magnets of the annular motor 4 interact with each other through the magnetic field. The magnetic field generated by the annular motor 4 interacts with the permanent magnets in the stirring blades 5 to achieve contactless drive; a control panel 7 is installed on the outer wall of the stirring tank 9, and the control panel 7 is used to control the power and speed of the annular motor 4.

[0030] To further optimize the solution, the ring motor adopts the RMS-120 permanent magnet synchronous ring motor, whose mechanical structure and working principle are known in the prior art and will not be described in detail here.

[0031] To further optimize the solution, a valve is installed on the discharge port of the mixing tank 9, and the discharge port of the mixing tank 9 is connected to a collecting tank 8, which is used to collect the hazardous waste after mixing for subsequent treatment.

[0032] To further optimize the solution, a sensor is provided inside the stirring tank 9 , and the sensor is used to monitor the stirring speed of the stirring blade 5 and the mixing degree of the hazardous waste in the stirring tank 9 in real time, and the sensor is electrically connected to the control panel 7 .

[0033] At the same time, a sensor for monitoring the temperature and pressure in the stirring tank 9 may be provided in the stirring tank 9 as required to ensure that the stirring process is carried out under safe conditions.

[0034] To further optimize the solution, an observation window 3 is provided on the wall of the mixing tank 9 to facilitate the operator to observe the mixing process.

[0035] To further optimize the solution, in order to collect and treat harmful gases that may be generated during the stirring process, a gas collection system is provided on the top of the stirring tank 9. The gas collection system includes a filtering and adsorption device 2 installed on the top of the stirring tank 9 and a gas collection pipe 1 connected to the filtering and adsorption device 2.

[0036] Further optimizing the scheme, the method for using the device comprises the following steps:

[0037] Add the hazardous waste to be mixed into the mixing tank 9;

[0038] Select appropriate stirring blades 5 according to the characteristics of hazardous waste and install them in the stirring tank 9;

[0039] The annular motor 4 is started, and the magnetic field interacts with the permanent magnet in the stirring blade 5, so as to drive the stirring blade 5 fixed on the mechanical stopper 6 to rotate and stir the hazardous waste;

[0040] The harmful gases generated during the mixing process are collected and treated through the gas collection system;

[0041] After the stirring is completed, the stirred hazardous waste is discharged into the collection tank 8 by controlling the valve of the discharge port.

[0042] A further optimization scheme includes the following steps before starting the ring motor 4:

[0043] Pre-treating the environment in the mixing tank 9 to adapt to the characteristics of the hazardous waste to be mixed;

[0044] Check the internal condition of the stirring tank 9 through the observation window 3 to ensure that the stirring blade 5 is correctly installed and there is no foreign matter in the stirring tank 9.

[0045] The hazardous waste stirring and mixing device provided by the present invention realizes contactless driving through the interaction between the magnetic field and the permanent magnet in the stirring blade 5. A mechanical limiter 6 is provided on the tank wall, which can prevent the stirring blade 5 from being displaced due to its own weight or the pressure of the material in the stirring tank 9 when the motor is not started, thereby ensuring the positioning accuracy and safety of the stirring blade 5. A gas collection system is provided on the top of the stirring tank 9 to collect and treat harmful gases that may be generated during the stirring process. The discharge port of the stirring tank 9 is connected to the collection tank 8, which is used to collect hazardous waste after stirring for subsequent treatment.

[0046] The present invention has a center shaft-free design, which reduces mechanical wear and improves the reliability and service life of the equipment; the ring motor 4 is directly driven, which improves the stirring efficiency and reduces energy consumption; it is easy to maintain and clean, and reduces maintenance costs; the design of the stirring blade 5 can be adjusted according to the characteristics of hazardous waste, thereby improving the adaptability of the stirring device.

[0047] Example 1

[0048] A mixing tank 9 with a capacity of 1000 liters is prepared. The tank body is made of stainless steel and is provided with a chemically resistant rubber lining.

[0049] Four stirring blades 5 are installed inside the stirring tank 9. The stirring blades 5 are made of carbon fiber reinforced plastic to improve strength and corrosion resistance.

[0050] Two annular motors 4 are evenly arranged on the tank wall of the stirring tank 9. The power of each motor is 5 kilowatts, and the speed can be adjusted in the range of 0 to 1000 revolutions per minute.

[0051] The temperature and pressure in the stirring tank 9 are monitored by sensors to ensure that the stirring process is carried out under safe conditions.

[0052] The hazardous waste containing heavy metals is added into the stirring tank 9, and the ring motor 4 is started to stir at a speed of 800 revolutions per minute until the hazardous waste is fully mixed.

[0053] After the stirring is completed, the valve of the discharge port is opened to discharge the stirred hazardous waste into the collection tank 8, and at the same time, the gas collection system is started to collect the gas generated during the stirring process and purify it.

[0054] Example 2

[0055] For hazardous waste containing flammable and explosive substances, the stirring tank 9 is firstly replaced with nitrogen to ensure safety during the stirring process.

[0056] A special stirring blade 5 is installed, and the surface of the blade is coated with fireproof material to prevent sparks from being generated during the stirring process.

[0057] A low-speed stirring strategy is adopted, and the rotation speed of the ring motor 4 is set to no more than 500 revolutions per minute to reduce the heat that may be generated during the stirring process.

[0058] During the stirring process, the stirring state of the hazardous waste is monitored in real time by a camera in the stirring tank 9 to ensure uniform mixing and no local overheating.

[0059] After the stirring is completed, the cooling system of the stirring tank 9 is controlled by the control panel 7 to reduce the temperature inside the tank to the ambient temperature before the hazardous waste is discharged.

[0060] Example 3

[0061] For stirring of high-viscosity hazardous waste, a specially designed stirring blade 5 is selected. The stirring blade 5 is spiral in shape to improve the stirring efficiency of the high-viscosity material.

[0062] The annular motor 4 adopts variable frequency drive to achieve precise control of the stirring speed to meet the stirring requirements of high-viscosity hazardous waste.

[0063] A filter is installed at the discharge port of the mixing tank 9 to prevent large particles in the hazardous waste from entering the collection tank 8.

[0064] During the mixing process, samples are taken regularly through the sampling port, and the mixing uniformity of the hazardous waste in the mixing tank 9 is analyzed in the laboratory to ensure the mixing quality.

[0065] After stirring is completed, the stirring parameters, including stirring time, speed, temperature, etc., are automatically recorded to facilitate subsequent process optimization and quality control.

[0066] Example 4

[0067] For hazardous waste containing a variety of different densities and particle sizes, a variable pitch stirring blade 5 is designed, and the pitch of the blade can be adjusted according to stirring needs.

[0068] A staged mixing strategy was adopted, first mixing at a low speed to avoid stratification of hazardous wastes of different densities, and then mixing at a high speed to achieve rapid mixing.

[0069] An ultrasonic device is installed on the top of the stirring tank 9 to assist stirring and promote the mixing of hazardous waste.

[0070] During the stirring process, the rotation speed of the annular motor 4 and the spacing of the stirring blades 5 are adjusted in real time through the control panel 7 to adapt to the characteristics of different hazardous wastes and the stirring stage.

[0071] After the stirring is completed, the stirred hazardous waste is gradually discharged into the collection tank 8 by controlling the valve of the discharge port, and then subsequently processed or disposed.

[0072] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A hazardous waste stirring and mixing device, characterized in that: The invention comprises a stirring tank (9), wherein the stirring tank (9) is provided with a feed inlet and a discharge outlet; an annular motor (4) is fixedly mounted on the tank wall of the stirring tank (9), a mechanical stopper (6) is arranged on the inner wall of the stirring tank (9), the stirring tank (9) is detachably connected to a plurality of stirring blades (5) via the mechanical stopper (6), the stirring blades (5) are arranged corresponding to the annular motor (4), and the permanent magnets of the annular motor (4) and the stirring blades (5) interact with each other through a magnetic field; a control panel (7) is mounted on the outer wall of the stirring tank (9), and the control panel (7) is used to control the power and rotation speed of the annular motor (4).

2. The hazardous waste stirring and mixing device according to claim 1, characterized in that: A valve is installed on the discharge port of the stirring tank (9), and the discharge port of the stirring tank (9) is connected to the collecting tank (8).

3. The hazardous waste stirring and mixing device according to claim 1, characterized in that: A sensor is provided inside the stirring tank (9), and the sensor is used to monitor the stirring speed of the stirring blade (5) and the mixing degree of the hazardous waste in the stirring tank (9) in real time. The sensor is electrically connected to the control panel (7).

4. The hazardous waste stirring and mixing device according to claim 1, characterized in that: An observation window (3) is provided on the tank wall of the stirring tank (9).

5. The hazardous waste stirring and mixing device according to claim 1, characterized in that: A gas collection system is provided on the top of the stirring tank (9), and the gas collection system comprises a filtering adsorption device (2) installed on the top of the stirring tank (9) and a gas collection pipeline (1) connected to the filtering adsorption device (2).

6. The hazardous waste stirring and mixing device according to any one of claims 1 to 5, characterized in that: The method for using the device comprises the following steps: Adding hazardous waste to be mixed into a mixing tank (9); Selecting a suitable stirring blade (5) according to the characteristics of the hazardous waste and installing it in the stirring tank (9); The ring motor (4) is started, and the magnetic field interacts with the permanent magnet in the stirring blade (5), thereby driving the stirring blade (5) fixed on the mechanical stopper (6) to rotate and stir the hazardous waste; The harmful gases generated during the mixing process are collected and treated through the gas collection system; After the stirring is completed, the stirred hazardous waste is discharged into a collection tank (8) by controlling the valve of the discharge port.

7. The hazardous waste stirring and mixing device according to claim 6, characterized in that: Before starting the annular motor (4), the method further comprises the following steps: Pre-treating the environment in the mixing tank (9) to adapt to the characteristics of the hazardous waste to be mixed; Check the interior of the stirring tank (9) through the observation window (3) to ensure that the stirring blade (5) is correctly installed and there is no foreign matter in the stirring tank (9).

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