Formaldehyde evaporator for formaldehyde production

Abstract

The utility model relates to the technical field of formaldehyde production, and discloses a formaldehyde evaporator for formaldehyde production, which comprises a support plate, the top of the support plate is fixedly connected with an evaporation tank, the bottom of the support plate is provided with a driving component, and the outside of the driving component is fixedly connected with a driving gear. The device comprises a supporting plate, a plurality of rotating frames are rotatably connected to the interior of the supporting plate, driven gears are fixedly connected to the exteriors of the rotating frames, limiting rings are fixedly connected to the top sides of the exteriors of the rotating frames, a plurality of liquid outlet holes are formed in the rotating frames, and a plurality of liquid inlet pipes are fixedly connected to the top of the supporting plate. The exterior of the driving assembly is fixedly connected with a trapezoidal heating plate, and the exterior of the driving assembly is fixedly connected with a plurality of stirring blades. According to the utility model, not only can the contact area of methanol liquid and the heating plate be increased, but also the internal heating can be more uniform by virtue of stirring, so that the evaporation efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde production, in particular to a formaldehyde evaporator for formaldehyde production. Background Art

[0002] Formaldehyde is an organic compound, a colorless gas with a strong irritating and suffocating odor. In the field of chemistry, it has important applications in many aspects. Due to its irritation, it is harmful to the human eyes and respiratory system. Long-term exposure may lead to chronic poisoning and even cancer. In modern industrial production, especially in the production process of chemical products, specific chemical substances often need to be transformed from liquid to gas through the physical process of evaporation. For the production of organic compounds such as formaldehyde, it is mainly prepared through the oxidation reaction of methanol.

[0003] After searching, the Chinese patent document announcement number is: CN219440700U. This utility model discloses an evaporator for formaldehyde production, including a tank body, a lifting mechanism is arranged above the tank body, and the lifting mechanism includes an electric telescopic rod, a push plate, a fixed shaft, a motor, a protection box, blades, etc., and a circulation mechanism is arranged on both sides of the tank body; by arranging an electric telescopic rod, the electric telescopic rod drives the motor to move up and down through the push plate, and the motor moves up and down while driving multiple blades to rotate through the protection box, stirring methanol while moving up and down, replacing the middle position or local stirring, expanding the stirring range of methanol, improving the heat exchange inside methanol, and thus improving the heating speed; by arranging a booster pump to pressurize the methanol at the bottom of the tank body, and spraying it out through the nozzle above the tank body, the methanol at the bottom of the tank body is prevented from overheating and affecting the normal evaporation process; by arranging a through hole, methanol splashing during stirring is prevented, and violent shaking of the tank body is avoided, thereby improving the safety of the device.

[0004] Although the above patent mentioned in the specification that "the device is provided with an electric telescopic rod, which drives the motor to move up and down through a push plate, and is provided with a motor, which drives multiple blades to rotate through a protective box while moving up and down, stirring the methanol while moving up and down, replacing the middle position or local stirring, expanding the stirring range of the methanol, improving the heat exchange inside the methanol, and thus increasing the heating speed; by providing a booster pump, the booster pump pressurizes the methanol at the bottom of the tank body, and sprays it out through a nozzle above the tank body, thereby avoiding overheating of the methanol at the bottom of the tank body and affecting the normal evaporation process; by providing an electric heating tube, the methanol is stirred. Heating, the electric heating tube is installed on the outside of the blade to prevent the blade and the electric heating tube from interfering with each other during the stirring process, which may cause damage to the device; the electric control valve B is provided to automatically control the discharging process, thereby improving the automation degree of the device; the temperature sensor is provided to sense the temperature on the top of the tank in real time, thereby improving the intelligence degree of the device; the through hole is provided to prevent methanol from splashing during the stirring process, avoid violent shaking of the tank, and improve the safety of the device. However, it is impossible to ensure full contact between methanol and the heating plate, resulting in low evaporation efficiency. Therefore, in view of the above shortcomings, a formaldehyde evaporator for formaldehyde production is proposed. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a formaldehyde evaporator for formaldehyde production, aiming to improve the problem of insufficient contact area between methanol and the heating plate in some formaldehyde evaporators in the prior art, resulting in low evaporation efficiency.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A formaldehyde evaporator for formaldehyde production comprises a support plate, the top of the support plate is fixedly connected to an evaporation tank, the bottom of the support plate is provided with a driving assembly, the outside of the driving assembly is fixedly connected to a driving gear, the inside of the support plate is rotatably connected to a plurality of rotating frames, the outsides of the plurality of rotating frames are fixedly connected to driven gears, the outer top sides of the plurality of rotating frames are fixedly connected to limiting rings, the insides of the plurality of rotating frames are provided with a plurality of liquid outlet holes, the top of the support plate is fixedly connected to a plurality of liquid inlet pipes, the outside of the driving assembly is fixedly connected to a trapezoidal heating plate, the outside of the driving assembly is fixedly connected to a plurality of stirring blades, the inner bottom side of the support plate is fixedly connected to a plurality of resistance heating wires, the top of the support plate is provided with a feeding assembly, the inner wall of the support plate is fixedly connected to a heat preservation ring, and the top left side of the support plate is fixedly connected to an air outlet pipe.

[0008] Furthermore, the driving assembly includes a motor, the top of the motor is mounted on the bottom of the support plate, and the output end of the motor is fixedly connected to a rotating shaft.

[0009] Furthermore, the unloading assembly includes a liquid storage tank, the bottom of which is fixedly connected to the top of the support plate, a feed pipe is fixedly connected to the top of the liquid storage tank, a suction pump is installed on the right side of the bottom of the support plate, the input end of the suction pump is fixedly connected to the input pipe, the output end of the suction pump is fixedly connected to the output pipe, the top of the output pipe is fixedly connected to a return pipe, the outside of the return pipe is fixedly connected to a fixing ring, and the left side of the return pipe is fixedly connected to a connecting pipe.

[0010] Furthermore, the outsides of the multiple liquid inlet pipes are fixedly connected with sealing ring 1, the outsides of the multiple feed pipes are fixedly connected with sealing ring 2, the four corners of the bottom of the support plate are fixedly connected with support columns, and the bottom left side of the support plate is fixedly connected with a liquid outlet valve.

[0011] Further, the outer portion of the rotating shaft is rotatably connected to the inner portion of the supporting plate, and the outer portion of the rotating shaft is rotatably connected to the inner portion of the evaporation tank.

[0012] Furthermore, the driving gear and the driven gear are meshingly connected, and the outer portion of the limiting ring is rotatably connected to the inner portion of the support plate.

[0013] Further, the outer left side of the fixing ring is fixedly connected to the outer right side of the evaporation tank, and the outer side of the reflux pipe is fixedly connected to the inner right side of the support plate.

[0014] Furthermore, the outer bottom side of the sealing ring 1 is fixedly connected to the inner bottom side of the liquid storage tank, and the outer bottom side of the sealing ring 2 is fixedly connected to the top of the liquid storage tank.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, by using the rotating shaft, driving gear, rotating frame, driven gear, limiting ring, liquid outlet, liquid inlet pipe, trapezoidal heating plate, stirring blade and other structures in coordination, not only the contact area between the methanol liquid and the heating plate can be increased, but also the internal heating can be made more uniform by stirring, thereby greatly improving the evaporation efficiency.

[0017] 2. In the utility model, through the coordinated use of structures such as the liquid storage tank, the feed pipe, the suction pump, the input pipe, the output pipe, the reflux pipe, the fixing ring, the connecting pipe, the sealing ring 1, and the sealing ring 2, not only can the liquid that has not been completely evaporated be refluxed to evaporate again, thereby greatly improving the evaporation efficiency, but also ensure the sealing inside the device, effectively preventing the leakage of formaldehyde gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a three-dimensional diagram of a formaldehyde evaporator for formaldehyde production proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of an evaporation tank of a formaldehyde evaporator for formaldehyde production proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of a liquid storage tank of a formaldehyde evaporator for formaldehyde production proposed by the utility model;

[0021] Figure 4 The utility model discloses a schematic diagram of the output pipe structure of a formaldehyde evaporator for formaldehyde production.

[0022] Legend:

[0023] 1. Support plate; 2. Evaporation tank; 3. Motor; 4. Rotating shaft; 5. Driving gear; 6. Rotating frame; 7. Driven gear; 8. Limiting ring; 9. Liquid outlet; 10. Liquid inlet pipe; 11. Trapezoidal heating plate; 12. Stirring blade; 13. Resistance heating wire; 14. Liquid storage tank; 15. Feed pipe; 16. Suction pump; 17. Input pipe; 18. Output pipe; 19. Reflux pipe; 20. Fixed ring; 21. Connecting pipe; 22. Sealing ring 1; 23. Sealing ring 2; 24. Insulation ring; 25. Air outlet pipe; 26. Support column; 27. Liquid outlet valve. 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] Reference Figure 1 - Figure 3The utility model provides an embodiment: a formaldehyde evaporator for formaldehyde production, comprising a support plate 1, the top of the support plate 1 is fixedly connected with an evaporation tank 2, the support plate 1 serves as the basis of the entire structure, and provides a stable support for the evaporation tank 2, a driving assembly is arranged at the bottom of the support plate 1, the driving assembly comprises a motor 3, the top of the motor 3 is installed at the bottom of the support plate 1, the motor 3 is responsible for providing power, the output end of the motor 3 is fixedly connected with a rotating shaft 4, the motor 3 transmits power through the rotating shaft 4, a driving gear 5 is fixedly connected to the outside of the driving assembly, a plurality of rotating frames 6 are rotatably connected to the inside of the support plate 1, a plurality of rotating frames 6 are fixedly connected to the outside with driven gears 7, the driven gears 7 and the driving gears 5 mesh to form a gear transmission system, a plurality of rotating frames 6 are fixedly connected to the outer top sides with limiting rings 8, the limiting rings 8 are used to limit the movement range of the rotating frames 6, and a plurality of rotating frames 6 are fixedly connected to the outer top sides with driven gears 7. A plurality of liquid outlet holes 9 are provided inside the rotating frame 6, and the liquid outlet holes 9 can throw out the liquid inside the rotating frame 6. A plurality of liquid inlet pipes 10 are fixedly connected to the top of the support plate 1, and the liquid inlet pipes 10 are used to transport methanol liquid to the rotating frame 6. A trapezoidal heating plate 11 is fixedly connected to the outside of the driving component, and a plurality of stirring blades 12 are fixedly connected to the outside of the driving component. The trapezoidal heating plate 11 and the plurality of stirring blades 12 are used to heat and stir formaldehyde to improve the evaporation efficiency. A plurality of resistance heating wires 13 are fixedly connected to the inner bottom side of the support plate 1, and the resistance heating wires 13 are used to provide heat to accelerate the evaporation process. A feeding assembly is provided on the top of the support plate 1, and a heat preservation ring 24 is fixedly connected to the inner wall of the support plate 1 to prevent heat loss, thereby improving the evaporation efficiency. An air outlet pipe 25 is fixedly connected to the left side of the top of the support plate 1, and the air outlet pipe 25 is designed here to collect formaldehyde gas.

[0026] Reference Figure 2 - Figure 4 The feeding assembly includes a liquid storage tank 14, the bottom of which is fixedly connected to the top of the support plate 1, and a feed pipe 15 is fixedly connected to the top of the liquid storage tank 14, and the feed pipe 15 is used to add methanol. A suction pump 16 is installed on the right side of the bottom of the support plate 1, and an input pipe 17 is fixedly connected to the input end of the suction pump 16, and an output pipe 18 is fixedly connected to the output end of the suction pump 16. It is designed here that the liquid inside the evaporation tank 2 is sucked into the inside of the output pipe 18 by the suction pump 16, and the top of the output pipe 18 is fixedly connected to a reflux pipe 19, so that The liquid is input into the interior of the connecting pipe 21 through the reflux pipe 19, a fixing ring 20 is fixedly connected to the outside of the reflux pipe 19, a connecting pipe 21 is fixedly connected to the left side of the reflux pipe 19, a sealing ring 1 22 is fixedly connected to the outside of multiple liquid inlet pipes 10, a sealing ring 23 is fixedly connected to the outside of multiple feed pipes 15, the sealing ring 1 22 and the sealing ring 2 23 ensure the sealing of the liquid inlet system, support columns 26 are fixedly connected to the four corners of the bottom of the support plate 1, and a liquid outlet valve 27 is fixedly connected to the left side of the bottom of the support plate 1 for discharging evaporated liquid.

[0027] Reference Figure 2 - Figure 4 The outer rotation of the rotating shaft 4 is connected to the inside of the support plate 1, and the outer rotation of the rotating shaft 4 is connected to the inside of the evaporation tank 2. It is designed here that the rotating shaft 4 can drive the driving gear 5 to rotate, and the driving gear 5 and the driven gear 7 are meshed. The outer rotation of the limit ring 8 is connected to the inside of the support plate 1. The limit ring 8 is designed here to ensure that the rotating frame 6 can rotate stably. The outer left side of the fixed ring 20 is fixedly connected to the outer right side of the evaporation tank 2, and the outer side of the reflux pipe 19 is fixedly connected to the inner right side of the support plate 1. The outer bottom side of the sealing ring 1 22 is fixedly connected to the inner bottom side of the liquid storage tank 14, and the outer bottom side of the sealing ring 23 is fixedly connected to the top of the liquid storage tank 14. It is designed here that the internal formaldehyde gas can be prevented from leaking through the sealing ring 1 22 and the sealing ring 2 23.

[0028] Working principle: When formaldehyde needs to be evaporated, methanol needs to be easily introduced into the liquid storage tank 14 through the feed pipe 15. At this time, the methanol solution in the liquid storage tank 14 can enter the rotating frame 6 through the liquid inlet pipe 10. At this time, the motor 3 can be started, and the rotating shaft 4 can be driven to rotate by the motor 3, and then the driving gear 5 can be driven to rotate. At this time, the driven gear 7 can also rotate with the meshing connection between the driving gear 5 and the driven gear 7. At this time, the rotating frame 6 can be driven to rotate with the rotation of the driven gear 7. At this time, the internal methanol liquid will be thrown out through the liquid outlet 9 with the help of the rotation of the rotating frame 6, and then it can be sprinkled onto the trapezoidal heating plate 11 The outside of the methanol liquid can be maximized to contact the trapezoidal heating plate 11, so that the methanol liquid can be overheated to produce formaldehyde. At this time, as the rotating shaft 4 rotates, the stirring blade 12 can rotate, so that the internal methanol liquid can be stirred. At the same time, the methanol liquid can be fully heated with the help of the resistance heating wire 13, so that the evaporation efficiency can be greatly improved. After a period of reaction, the suction pump 16 can be started to suck the liquid that has not been completely reacted into the inside of the output pipe 18, and then it is pumped back to the inside of the connecting pipe 21 through the reflux pipe 19, and finally enters the inside of the liquid storage tank 14 again, so that this part of the liquid can be reheated and reacted again, thereby greatly improving the evaporation efficiency.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A formaldehyde evaporator for formaldehyde production, comprising a support plate (1), characterized in that: The top of the support plate (1) is fixedly connected to an evaporation tank (2), the bottom of the support plate (1) is provided with a driving assembly, the outside of the driving assembly is fixedly connected to a driving gear (5), the inside of the support plate (1) is rotatably connected to a plurality of rotating frames (6), the outsides of the plurality of rotating frames (6) are all fixedly connected to driven gears (7), the top sides of the outsides of the plurality of rotating frames (6) are all fixedly connected to limiting rings (8), the insides of the plurality of rotating frames (6) are all provided with a plurality of liquid outlet holes (9), and the A plurality of liquid inlet pipes (10) are fixedly connected to the top of the support plate (1), a trapezoidal heating plate (11) is fixedly connected to the outside of the drive assembly, a plurality of stirring blades (12) are fixedly connected to the outside of the drive assembly, a plurality of resistance heating wires (13) are fixedly connected to the inner bottom side of the support plate (1), a material discharge assembly is arranged on the top of the support plate (1), a heat preservation ring (24) is fixedly connected to the inner wall of the support plate (1), and an air outlet pipe (25) is fixedly connected to the left side of the top of the support plate (1).

2. A formaldehyde evaporator for formaldehyde production according to claim 1, characterized in that: The driving assembly comprises a motor (3), the top of the motor (3) is mounted on the bottom of the support plate (1), and the output end of the motor (3) is fixedly connected to a rotating shaft (4).

3. A formaldehyde evaporator for formaldehyde production according to claim 1, characterized in that: The unloading assembly comprises a liquid storage tank (14), the bottom of the liquid storage tank (14) is fixedly connected to the top of the support plate (1), the top of the liquid storage tank (14) is fixedly connected to a feed pipe (15), a suction pump (16) is installed on the right side of the bottom of the support plate (1), the input end of the suction pump (16) is fixedly connected to an input pipe (17), the output end of the suction pump (16) is fixedly connected to an output pipe (18), the top of the output pipe (18) is fixedly connected to a return pipe (19), the outside of the return pipe (19) is fixedly connected to a fixing ring (20), and the left side of the return pipe (19) is fixedly connected to a connecting pipe (21).

4. A formaldehyde evaporator for formaldehyde production according to claim 3, characterized in that: The outsides of the plurality of liquid inlet pipes (10) are fixedly connected with sealing rings 1 (22), the outsides of the plurality of material feed pipes (15) are fixedly connected with sealing rings 2 (23), the four corners of the bottom of the support plate (1) are fixedly connected with support columns (26), and the left side of the bottom of the support plate (1) is fixedly connected with a liquid outlet valve (27).

5. A formaldehyde evaporator for formaldehyde production according to claim 2, characterized in that: The outer portion of the rotating shaft (4) is rotatably connected to the inside of the supporting plate (1), and the outer portion of the rotating shaft (4) is rotatably connected to the inside of the evaporation tank (2).

6. A formaldehyde evaporator for formaldehyde production according to claim 1, characterized in that: The driving gear (5) and the driven gear (7) are meshingly connected, and the outside of the limiting ring (8) is rotatably connected to the inside of the support plate (1).

7. A formaldehyde evaporator for formaldehyde production according to claim 3, characterized in that: The outer left side of the fixing ring (20) is fixedly connected to the outer right side of the evaporation tank (2), and the outer side of the return pipe (19) is fixedly connected to the inner right side of the support plate (1).

8. A formaldehyde evaporator for formaldehyde production according to claim 4, characterized in that: The outer bottom side of the sealing ring 1 (22) is fixedly connected to the inner bottom side of the liquid storage tank (14), and the outer bottom side of the sealing ring 2 (23) is fixedly connected to the top of the liquid storage tank (14).

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