Nitroguanidine dirty material recovery device capable of accelerating dissolution

Abstract

The utility model discloses a nitroguanidine dirty material recovery device capable of accelerating dissolution, which comprises a bottom bearing frame, a dissolution kettle is mounted on one side of the top of the bottom bearing frame, an interlayer sleeve is sleeved outside the dissolution kettle, and vibration components capable of accelerating dissolution are arranged on two sides of the bottom of the dissolution kettle. The dissolving-accelerating nitroguanidine dirty material recovery device is provided with a heat insulation sleeve, a mounting sleeve, an ultrasonic transducer and an ultrasonic generator access port, when the dissolving-accelerating nitroguanidine dirty material recovery device is used, a cable of an ultrasonic generator is connected into the ultrasonic generator access port, and the ultrasonic transducer emits ultrasonic waves upwards; ultrasonic waves are rapidly diffused in the dissolving kettle with dirty waste water as a medium, balled and adhered lime powder is rapidly torn and peeled off, the lime powder is rapidly dissolved in the dirty waste water, the heat insulation sleeve can isolate heat conduction oil, the installation sleeve is convenient to disassemble and assemble so that the ultrasonic transducer can be overhauled, the function of accelerating material dissolution is achieved, and the service life of the ultrasonic transducer is prolonged. The problem that a device does not have the function of accelerating material dissolution is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dirty material recovery devices, in particular to a nitroguanidine dirty material recovery device with accelerated dissolution. Background Art

[0002] As a raw material for organic synthesis, nitroguanidine is used as an intermediate for imidacloprid and acetamiprid in pesticides, and is used to synthesize the next intermediate N-nitroimidazole. In addition, it can be reduced to prepare aminoguanidine, which is used to synthesize the angina pectoris drug Lexapro, etc. It can also be used in the preparation of explosives and smokeless water medicines.

[0003] The traditional production process of nitroguanidine is the sulfuric acid dehydration method. In this process, the nitration reaction materials need to be subjected to water precipitation treatment to obtain nitroguanidine. At the same time, a large amount of acidic wastewater with a sulfuric acid mass concentration of about 20% will be produced. The wastewater still contains some raw materials, guanidine nitrate and nitroguanidine products that have not participated in the reaction, which usually need to be recycled. The most common method is to add the lime powder discarded in the production process of dicyandiamide into the wastewater for dissolution and mixing to form calcium sulfate crystals for recycling. The equipment mainly uses a mixing kettle, a sedimentation tank and a filter, and uses an acid-resistant pump for circulation. There are some functional deficiencies in actual use and there is room for improvement. For example, in the current recovery system, the motor mainly drives the stirring rod to rotate and also drives the raw material to dissolve. The lime powder itself is light in weight and has extremely fine particles. After being put into the kettle, it is easy to form small balls, and some of them will adhere to the stirring rod and the inner wall of the kettle. It takes a long time to stir it to completely merge it with the dirty wastewater. The dissolution efficiency is low and it does not have the function of accelerating the dissolution of the material.

[0004] Now, a new type of nitroguanidine dirty material recovery device with accelerated dissolution is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a nitroguanidine dirty material recovery device with accelerated dissolution, so as to solve the problem of the lack of the function of accelerating the dissolution of materials proposed in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nitroguanidine dirty material recovery device for accelerating dissolution, comprising a bottom supporting frame, a dissolving kettle is installed on one side of the top of the bottom supporting frame, a sandwich sleeve is sleeved on the outside of the dissolving kettle, a top cover is fixedly connected to the top of the dissolving kettle, a dirty material inlet is arranged at the front end of the top cover, a lime powder inlet is arranged on one side of the top of the top cover, a driving motor is installed at the middle position of the top of the top cover, a stirring shaft is vertically installed at the bottom end of the driving motor, a circulating liquid inlet is fixedly connected to one side of the top cover, and the A membrane filter is provided on the right side of the dissolving kettle, and a first sedimentation tank and a second sedimentation tank are respectively installed on the other side of the top of the bottom supporting frame, a return liquid pipe is fixedly connected between one side of the top of the first sedimentation tank and one side of the membrane filter, a connecting pipe is installed between the tops of the first sedimentation tank and the second sedimentation tank, a circulating pump is provided below the dissolving kettle, a liquid outlet pipe is installed between one side of the circulating pump and the bottom end of the dissolving kettle, a liquid delivery pipe is installed between the other side of the circulating pump and the top of the second sedimentation tank, and vibration components for accelerating dissolution are provided on both sides of the bottom of the dissolving kettle.

[0007] The vibration assembly includes two groups of insulation sleeves, which are respectively fixedly connected to the two sides of the bottom of the dissolving kettle, and the bottom of the insulation sleeve is plugged with a mounting sleeve from bottom to top, and an ultrasonic transducer is installed at the bottom of the mounting sleeve, and an ultrasonic generator access port is arranged at the middle position of the bottom of the mounting sleeve.

[0008] Preferably, the inner wall of the thermal insulation sleeve is threaded, the outer wall of the mounting sleeve is threaded, and the threads of the outer wall of the mounting sleeve match the threads of the inner wall of the thermal insulation sleeve.

[0009] Preferably, the top end of the ultrasonic transducer is in contact with the bottom end of the dissolving kettle, and the ultrasonic transducer and the dissolving kettle are in close contact.

[0010] Preferably, the ultrasonic transducer and the ultrasonic generator access port are electrically connected, and the ultrasonic transducer is symmetrically distributed about the vertical center line of the dissolving kettle.

[0011] Preferably, a sample outlet tube is vertically arranged at the bottom end of the circulating liquid inlet, an outlet tube valve is installed at the middle position of the sample outlet tube, and a sample bottle is arranged at the bottom end of the sample outlet tube.

[0012] Preferably, the circulating liquid inlet, the sample outlet tube, the outlet tube valve, and the interior of the sample bottle are connected, and the sample outlet tube and the sample bottle are threadedly connected.

[0013] Preferably, solenoid valves are installed at the bottom ends of the first sedimentation tank and the second sedimentation tank, respectively; a controller with a screen display is installed at the middle position of the top end of the first sedimentation tank and the second sedimentation tank, and an extension tube is fixedly connected to the bottom end of the controller with a screen display.

[0014] Preferably, an ultrasonic sensor is installed at the bottom end of the extension tube, and the solenoid valve, the controller with screen display and the ultrasonic sensor are electrically connected.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the nitroguanidine dirty material recovery device for accelerating dissolution not only realizes the function of accelerating material dissolution, but also realizes the function of facilitating sampling and the function of automatically discharging crystals;

[0016] (1) By providing a heat insulation sleeve, a mounting sleeve, an ultrasonic transducer and an ultrasonic generator access port, when in use, the nitroguanidine dirty material is injected into the dissolving kettle along the dirty material inlet, and the corresponding proportion of lime powder is added according to the amount of dirty material. The driving motor drives the stirring shaft to rotate, so that the lime powder is fully dissolved in the dirty material wastewater. The heat transfer oil in the interlayer sleeve can be adjusted by time and temperature. While stirring, the cable of the ultrasonic generator is connected to the ultrasonic generator access port, and the ultrasonic transducer emits ultrasonic waves upward. The ultrasonic waves diffuse rapidly in the dissolving kettle with the dirty material wastewater as the medium, and the balled and adhered lime powder is quickly torn and peeled off, so that it is quickly dissolved in the dirty material wastewater. The heat insulation sleeve can isolate the heat transfer oil, and the mounting sleeve is convenient for disassembly and assembly to inspect and repair the ultrasonic transducer, thereby realizing the function of accelerating the dissolution of the material;

[0017] (2) By providing a sample outlet tube, an outlet tube valve and a sample bottle, when in use, lime powder and dirty wastewater will react chemically after mixing to form calcium sulfate crystals in the solution. The calcium sulfate crystals together with the dirty wastewater are pumped out by the circulation pump and sent to the first precipitation tank and the second precipitation tank for precipitation. The precipitated wastewater is then filtered through a membrane filter, and the filtered wastewater is circulated into the dissolution kettle. After multiple reactions, the useful components are extracted to the maximum extent. The staff regularly opens the outlet tube valve, and the solution filtered by the membrane filter flows into the sample bottle along the sample outlet tube. When sampling, the outlet tube valve is closed, and the sample bottle is rotated to remove it for testing, thereby realizing the function of convenient sampling;

[0018] (3) By providing an electromagnetic valve, a controller with a display screen, an extension tube and an ultrasonic sensor, when in use, the calcium sulfate crystals together with the dirty waste liquid are pumped out by the circulation pump and sent to the first sedimentation tank and the second sedimentation tank for precipitation. As the calcium sulfate crystals inside the first sedimentation tank and the second sedimentation tank gradually pile up, the ultrasonic sensor at the bottom of the extension tube can sense the top height of the crystal pile, and the controller with a display screen displays the actual height value. When the preset threshold value is reached, the electromagnetic valve automatically opens to discharge part of the crystals, thereby realizing the function of automatically discharging the crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of a partial cross-sectional structure of a dissolving kettle of the utility model;

[0021] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 4 It is a front view enlarged structural schematic diagram of the extension tube of the utility model.

[0023] In the figure: 1. bottom support frame; 2. dissolving kettle; 3. interlayer sleeve; 4. top cover; 5. dirty material inlet; 6. lime powder inlet; 7. driving motor; 8. stirring shaft; 9. insulation sleeve; 10. mounting sleeve; 11. ultrasonic transducer; 12. ultrasonic generator access port; 13. circulating liquid inlet; 14. sample outlet pipe; 15. outlet pipe valve; 16. sample bottle; 17. membrane filter; 18. liquid return pipe; 19. first sedimentation tank; 20. second sedimentation tank; 21. solenoid valve; 22. controller with screen display; 23. extension tube; 24. ultrasonic sensor; 25. connecting pipe; 26. liquid delivery pipe; 27. circulation pump; 28. liquid outlet pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-4A nitroguanidine dirty material recovery device for accelerating dissolution comprises a bottom supporting frame 1, a dissolving kettle 2 is installed on one side of the top of the bottom supporting frame 1, a sandwich sleeve 3 is sleeved on the outside of the dissolving kettle 2, a top cover 4 is fixedly connected to the top of the dissolving kettle 2, a dirty material inlet 5 is arranged at the front end of the top cover 4, a lime powder inlet 6 is arranged on one side of the top of the top cover 4, a driving motor 7 is installed at the middle position of the top of the top cover 4, a stirring shaft 8 is vertically installed at the bottom end of the driving motor 7, a circulating liquid inlet 13 is fixedly connected to one side of the top cover 4, a membrane filter 17 is arranged on the right side of the dissolving kettle 2, and the bottom supporting frame 1 is provided with a plurality of nitroguanidine dirty material recovery devices. The other side of the top of the frame 1 is respectively installed with a first precipitation tank 19 and a second precipitation tank 20, a liquid return pipe 18 is fixedly connected between one side of the top of the first precipitation tank 19 and one side of the membrane filter 17, a connecting pipe 25 is installed between the tops of the first precipitation tank 19 and the second precipitation tank 20, a circulation pump 27 is arranged below the dissolving kettle 2, a liquid outlet pipe 28 is installed between one side of the circulation pump 27 and the bottom end of the dissolving kettle 2, a liquid delivery pipe 26 is installed between the other side of the circulation pump 27 and the top of the second precipitation tank 20, and vibration components for accelerating dissolution are arranged on both sides of the bottom of the dissolving kettle 2;

[0026] See also Figure 1-4 A nitroguanidine dirty material recovery device for accelerating dissolution also includes a vibration component, which includes two groups of heat insulation sleeves 9, which are respectively fixedly connected to the two sides of the bottom of the dissolution kettle 2, and the bottom of the heat insulation sleeve 9 is plugged with a mounting sleeve 10 from bottom to top, and an ultrasonic transducer 11 is installed at the bottom of the mounting sleeve 10, and an ultrasonic generator access port 12 is provided at the middle position of the bottom of the mounting sleeve 10;

[0027] The inner wall of the heat insulating sleeve 9 is threaded, the outer wall of the mounting sleeve 10 is threaded, the thread of the outer wall of the mounting sleeve 10 matches the thread of the inner wall of the heat insulating sleeve 9, the top of the ultrasonic transducer 11 contacts the bottom of the dissolving kettle 2, the ultrasonic transducer 11 and the dissolving kettle 2 are tightly fitted, the ultrasonic transducer 11 and the ultrasonic generator access port 12 are electrically connected, the ultrasonic transducer 11 is symmetrically distributed about the vertical center line of the dissolving kettle 2, and the dissolution is accelerated by stirring;

[0028] Specifically, Figure 1 and Figure 2 As shown, the cable of the ultrasonic generator is connected to the ultrasonic generator access port 12, and the ultrasonic transducer 11 emits ultrasonic waves upward. The ultrasonic waves diffuse rapidly in the dissolving kettle 2 with the dirty wastewater as the medium, and the balled and adhered lime powder is quickly torn off and peeled off, so that it is quickly dissolved in the dirty wastewater. The heat insulation sleeve 9 can isolate the heat transfer oil, and the installation sleeve 10 is convenient for disassembly and assembly to inspect and repair the ultrasonic transducer 11.

[0029] Embodiment 2: A sample outlet tube 14 is vertically arranged at the bottom end of the circulating liquid inlet 13, an outlet tube valve 15 is installed at the middle position of the sample outlet tube 14, and a sample bottle 16 is arranged at the bottom end of the sample outlet tube 14. The insides of the circulating liquid inlet 13, the sample outlet tube 14, the outlet tube valve 15, and the sample bottle 16 are connected, and the sample outlet tube 14 and the sample bottle 16 are threadedly connected, which is convenient for sampling and inspection;

[0030] Specifically, Figure 1 and Figure 3 As shown, the outlet pipe valve 15 is opened regularly, and the solution filtered by the membrane filter 17 flows into the sample bottle 16 along the sample outlet pipe 14. When sampling, the outlet pipe valve 15 is closed, and the sample bottle 16 is rotated to be removed for testing.

[0031] Embodiment 3: Solenoid valves 21 are installed at the bottom ends of the first precipitation tank 19 and the second precipitation tank 20, respectively; screen controllers 22 are installed at the middle positions of the top ends of the first precipitation tank 19 and the second precipitation tank 20, respectively; an extension tube 23 is fixedly connected to the bottom end of the screen controller 22, and an ultrasonic sensor 24 is installed at the bottom end of the extension tube 23; the solenoid valve 21, the screen controller 22, and the ultrasonic sensor 24 are conveniently electrically connected, and can control automatic discharge by sensing the height of the deposited crystals;

[0032] Specifically, Figure 1 and Figure 4 As shown, the ultrasonic sensor 24 at the bottom of the extension tube 23 can sense the top height of the crystal pile, and the screen controller 22 displays the actual height value. When the preset threshold is reached, the solenoid valve 21 automatically opens to discharge part of the crystals.

[0033] Working principle: When the utility model is in use, first, the nitroguanidine dirty material is injected into the dissolving kettle 2 along the dirty material inlet 5, and the corresponding proportion of lime powder is added according to the amount of dirty material. The driving motor 7 drives the stirring shaft 8 to rotate, so that the lime powder is fully dissolved in the dirty material wastewater. The heat transfer oil in the interlayer sleeve 3 can be adjusted by time and temperature. While stirring, the cable of the ultrasonic generator is connected to the ultrasonic generator access port 12, and the ultrasonic transducer 11 emits ultrasonic waves upward. The ultrasonic wave quickly diffuses in the dissolving kettle 2 with the dirty material wastewater as the medium, and quickly tears and peels off the balled and adhered lime powder, so that it is quickly dissolved in the dirty material wastewater. The insulation sleeve 9 can isolate the heat transfer oil, and the installation sleeve 10 is convenient for disassembly and assembly to inspect and repair the ultrasonic transducer 11. When the lime powder and the dirty wastewater are mixed, a chemical reaction will occur to form calcium sulfate crystals in the solution. The calcium sulfate crystals together with the dirty waste liquid are pumped out by the circulation pump 27 and sent to the first sedimentation tank 19 and the second sedimentation tank 20 for precipitation. The precipitated waste liquid is then filtered through the membrane filter 17, and the filtered waste liquid is circulated into the dissolution kettle 2. After multiple reactions, the useful components are extracted to the maximum extent. The staff regularly opens the outlet pipe valve 15, and the solution filtered by the membrane filter 17 flows into the sample bottle 16 along the sample outlet pipe 14. When sampling, close the outlet pipe valve 15, rotate the sample bottle 16 to remove it for testing. The calcium sulfate crystals together with the dirty waste liquid are pumped out by the circulation pump 27 and sent to the first sedimentation tank 19 and the second sedimentation tank 20 for precipitation. As the calcium sulfate crystals inside the first sedimentation tank 19 and the second sedimentation tank 20 gradually pile up, the ultrasonic sensor 24 at the bottom of the extension tube 23 can sense the top height of the crystal pile, and the screen controller 22 displays the actual height value. When the preset threshold is reached, the solenoid valve 21 automatically opens to discharge some of the crystals.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A nitroguanidine dirty material recovery device with accelerated dissolution, comprising a bottom support frame (1), characterized in that: A dissolving kettle (2) is installed on one side of the top of the bottom support frame (1), the outside of the dissolving kettle (2) is sleeved with an interlayer sleeve (3), the top of the dissolving kettle (2) is fixedly connected with a top cover (4), the front end of the top cover (4) is provided with a dirty material inlet (5), one side of the top of the top cover (4) is provided with a lime powder inlet (6), a driving motor (7) is installed at the middle position of the top of the top cover (4), a stirring shaft (8) is vertically installed at the bottom of the driving motor (7), one side of the top cover (4) is fixedly connected with a circulating liquid inlet (13), a membrane filter (17) is provided on the right side of the dissolving kettle (2), and the other side of the top of the bottom support frame (1) is provided with a filter. A first precipitation tank (19) and a second precipitation tank (20) are respectively installed, a liquid return pipe (18) is fixedly connected between one side of the top of the first precipitation tank (19) and one side of the membrane filter (17), a connecting pipe (25) is installed between the tops of the first precipitation tank (19) and the second precipitation tank (20), a circulation pump (27) is arranged below the dissolving kettle (2), a liquid outlet pipe (28) is installed between one side of the circulation pump (27) and the bottom end of the dissolving kettle (2), a liquid delivery pipe (26) is installed between the other side of the circulation pump (27) and the top of the second precipitation tank (20), and vibration components for accelerating dissolution are arranged on both sides of the bottom of the dissolving kettle (2); The vibration assembly comprises two groups of heat-insulating sleeves (9), the two groups of heat-insulating sleeves (9) are respectively fixedly connected to the two sides of the bottom of the dissolving kettle (2), the bottom end of the heat-insulating sleeve (9) is plugged with a mounting sleeve (10) from bottom to top, the bottom end of the mounting sleeve (10) is installed with an ultrasonic transducer (11), and an ultrasonic generator access port (12) is arranged at the middle position of the bottom end of the mounting sleeve (10).

2. The nitroguanidine dirty material recovery device for accelerated dissolution according to claim 1, characterized in that: The inner wall of the heat insulating sleeve (9) is threaded, and the outer wall of the installation sleeve (10) is threaded, and the threads on the outer wall of the installation sleeve (10) match the threads on the inner wall of the heat insulating sleeve (9).

3. The nitroguanidine dirty material recovery device for accelerated dissolution according to claim 1, characterized in that: The top end of the ultrasonic transducer (11) is in contact with the bottom end of the dissolving kettle (2), and the ultrasonic transducer (11) and the dissolving kettle (2) are tightly fitted.

4. The nitroguanidine dirty material recovery device for accelerated dissolution according to claim 1 is characterized in that: The ultrasonic transducer (11) and the ultrasonic generator access port (12) are electrically connected, and the ultrasonic transducer (11) is symmetrically distributed about the vertical center line of the dissolving kettle (2).

5. The nitroguanidine dirty material recovery device for accelerated dissolution according to claim 1, characterized in that: A sample outlet tube (14) is vertically arranged at the bottom end of the circulating liquid inlet (13), an outlet tube valve (15) is installed at the middle position of the sample outlet tube (14), and a sample bottle (16) is arranged at the bottom end of the sample outlet tube (14).

6. The device for recovering dirty nitroguanidine with accelerated dissolution according to claim 5, characterized in that: The circulating liquid inlet (13), the sample outlet pipe (14), the outlet pipe valve (15), and the interior of the sample bottle (16) are connected, and the sample outlet pipe (14) and the sample bottle (16) are threadedly connected.

7. The device for recovering dirty nitroguanidine with accelerated dissolution according to claim 1, characterized in that: A solenoid valve (21) is installed at the bottom end of each of the first sedimentation tank (19) and the second sedimentation tank (20), and a controller with a screen display (22) is installed at the middle position of the top end of each of the first sedimentation tank (19) and the second sedimentation tank (20), and an extension tube (23) is fixedly connected to the bottom end of each of the controllers with a screen display (22).

8. The device for recovering dirty nitroguanidine with accelerated dissolution according to claim 7, characterized in that: An ultrasonic sensor (24) is installed at the bottom end of the extension tube (23), and the solenoid valve (21), the controller with screen display (22), and the ultrasonic sensor (24) are electrically connected.

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