Storage device for urea resin production

Abstract

The utility model relates to the technical field of storage devices, in particular to a storage device for urea resin production, which comprises a vacuum tank, the top and the bottom of the vacuum tank are fixedly connected and communicated with material guide pipes respectively, a stirrer is mounted at the top of the vacuum tank, and the bottom of the stirrer penetrates into the vacuum tank; the heat dissipation device can detect the humidity of cooled air in real time, the filtering mechanism is automatically switched when the humidity exceeds a safety value, an alarm is given to the surrounding, the unused filtering mechanism can continue to conduct filtering and drying operation at the moment, it can be guaranteed that cold air entering the vacuum tank is kept dry, and the service life of the vacuum tank is prolonged. And the humidity of the urea resin storage environment is always in a low state, so that the storage time of the urea resin is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of storage devices, in particular to a storage device for urea resin production. Background Art

[0002] Urea resin, also known as urea-formaldehyde resin, is formed by the condensation of urea and formaldehyde under the action of a catalyst (alkaline or acidic catalyst) to form an initial urea-formaldehyde resin, and then under the action of a curing agent or auxiliary agent, it forms an insoluble and infusible final thermosetting resin. In the production process of urea-formaldehyde resin, a storage device is needed to store urea-formaldehyde resin.

[0003] At present, a Chinese patent discloses a storage device for urea resin production (publication number CN216469908U). The beneficial effects of the utility model are: a vacuum cavity is reserved between the outer tank body and the inner tank body, and the overall thermal insulation performance can be greatly improved through the vacuum cavity; during long-term storage, the interior of the inner tank body can be circulated and ventilated and cooled through the circulating cooling component, so that the entire storage tank has the ability to automatically cool down, avoiding the internal temperature of the storage tank being too high to affect the storage quality.

[0004] Since the semiconductor refrigeration plate will condense water vapor in the air while cooling the air, the condensed water will be absorbed by the water-absorbing silica gel particle layer. However, the water absorption content of the water-absorbing silica gel particle layer is limited. When the water-absorbing silica gel particle layer is saturated, it will no longer absorb water. At this time, the water will still follow the cooling air flow into the storage tank, which will undoubtedly affect the normal storage of urea resin and make it difficult to store urea resin for a long time.

[0005] Therefore, a storage device for urea resin production is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a storage device for urea resin production in order to solve the above problems, thereby improving the problem that the existing storage device for urea resin production is difficult to store urea resin at low temperature for a long time and has low practicality.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme. A storage device for urea resin production comprises: a vacuum tank, the top and bottom of the vacuum tank are respectively fixedly connected and communicated with a material guide pipe, an agitator is installed on the top of the vacuum tank, and the bottom of the agitator penetrates into the interior of the vacuum tank; a heat dissipation device, the heat dissipation device for quickly reducing the internal temperature of the vacuum tank is installed between the vacuum tank and the agitator, and one end of the heat dissipation device penetrates into the interior of the vacuum tank.

[0008] Preferably, the heat dissipation device includes a temperature controller, a radiator, a three-way solenoid valve, two filter mechanisms, a three-way pipe and a humidity controller, the temperature controller is fixedly connected to the inner top wall of the vacuum tank, the radiator is fixedly connected to the top of the vacuum tank, one end of the radiator is fixedly connected and connected to the three-way solenoid valve, two filter mechanisms are respectively fixedly connected and connected to the other two ends of the three-way solenoid valve, the three-way pipe is fixedly connected and connected between the two filter mechanisms, the humidity controller is installed inside the three-way pipe, the other end of the three-way pipe is fixedly connected and connected to the agitator, the heat dissipation device can detect the humidity of the cooled air in real time, automatically switch the filter mechanism when the humidity exceeds a safe value, and send an alarm to the surroundings, at this time, the unused filter mechanism can continue to filter and dry, which can ensure that the cold air entering the vacuum tank remains dry, so that the humidity of the environment where the urea resin is stored is always at a low state, so as to extend the storage time of the urea resin, and at the same time, the staff can arrive in time and maintain the filter mechanism without stopping the machine, thereby improving the practicality of the storage device.

[0009] Preferably, the surface of the three-way pipe is fixedly connected and communicated with two one-way valves, and the two one-way valves are symmetrically distributed on both sides of the humidity controller. The blocking direction of the one-way valve is the same as the direction of the three-way pipe toward the filtering mechanism, which can prevent the airflow from flowing back into another filtering mechanism to ensure the flow rate of the airflow entering the vacuum tank.

[0010] Preferably, the top of the humidity controller passes through the outside of the three-way pipe, and a sound and light alarm is fixedly connected to the top of the humidity controller. When the humidity controller controls the three-way solenoid valve, the humidity controller also controls the sound and light alarm to turn on according to a preset program to warn surrounding staff to come for maintenance in time.

[0011] Preferably, the filtering mechanism includes a mounting cylinder, the surface of which is slidably connected with two threaded joints, the two threaded joints are respectively threadedly connected and communicated with the three-way solenoid valve and the three-way pipe, the interior of the mounting cylinder is filled with desiccant, and a detachable filtering mechanism is adopted, which can make the maintenance work of the staff more convenient.

[0012] Preferably, the installation tube is a transparent PVC material component, and the desiccant is a color-changing silica gel material component. The staff can directly observe the color of the desiccant through the transparent installation tube, so that the staff can perform maintenance operations accurately.

[0013] Preferably, a first filter is fixedly connected to the interior of the mounting cylinder, and a second filter is fixedly connected to the interior of the mounting cylinder. The first filter and the second filter are symmetrically distributed on both sides of the desiccant. The first filter and the second filter cooperate not only to confine the desiccant to the interior of the mounting cylinder, but also to filter dust in the passing air, so that the air entering the vacuum tank remains clean.

[0014] Preferably, an internal thread is provided inside the mounting cylinder, the inner side thread of the internal thread is connected to a threaded sleeve, the second filter screen is embedded and installed on the inner side of the threaded sleeve, and the second filter screen is fixedly connected to the mounting cylinder through the threaded sleeve and the internal thread, which enables the staff to replace the desiccant more conveniently without replacing the entire filtering mechanism, thereby achieving the purpose of reducing the drying cost.

[0015] Preferably, one end of the threaded sleeve is fixedly connected with an adjusting plate, and the corners of the adjusting plate are rounded, which enables the staff to adjust the threaded sleeve more easily and reduces the adjustment burden of the staff.

[0016] The beneficial effects of the utility model are:

[0017] 1. The heat dissipation device can detect the humidity of the cooled air in real time. When the humidity exceeds the safe value, it will automatically switch the filter mechanism and send an alarm to the surroundings. At this time, the unused filter mechanism can continue to filter and dry. This can ensure that the cold air entering the vacuum tank remains dry, so that the humidity of the environment where the urea resin is stored is always at a low level, thereby extending the storage time of the urea resin. At the same time, the staff can arrive in time and maintain the filter mechanism without stopping the machine, thereby improving the practicality of the storage device;

[0018] 2. The filter mechanism is detachable, which makes the maintenance work of the staff more convenient. The first filter and the second filter can be used together to not only confine the desiccant inside the installation cylinder, but also filter the dust in the passing air, so that the air entering the vacuum tank remains clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a partial cutout of the heat dissipation device in the utility model;

[0022] Figure 4 It is a partially cut-away schematic diagram of the three-way solenoid valve, the filtering mechanism and the three-way pipe in the utility model.

[0023] In the figure: 1. vacuum tank; 2. material guide pipe; 3. agitator; 4. heat dissipation device; 41. temperature controller; 42. radiator; 43. three-way solenoid valve; 44. filtering mechanism; 441. mounting cylinder; 442. threaded joint; 443. desiccant; 444. first filter screen; 445. second filter screen; 446. internal thread; 447. threaded sleeve; 448. adjusting plate; 45. three-way pipe; 46. humidity controller; 47. one-way valve; 48. sound and light alarm. 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] When implementing: Figure 1-4 As shown, a storage device for urea resin production includes: a vacuum tank 1, the top and bottom of the vacuum tank 1 are respectively fixedly connected and connected with a material guide pipe 2, a stirrer 3 is installed on the top of the vacuum tank 1, and the bottom of the stirrer 3 penetrates into the interior of the vacuum tank 1; a heat dissipation device 4, the heat dissipation device 4 for quickly reducing the internal temperature of the vacuum tank 1 is installed between the vacuum tank 1 and the stirrer 3, one end of the heat dissipation device 4 penetrates into the interior of the vacuum tank 1, the stirrer 3 includes a servo motor, the servo motor is fixedly connected to the top of the vacuum tank 1, the output shaft of the servo motor is fixedly connected with a driving bevel gear, the surface of the driving bevel gear is meshed with a driven bevel gear, and the driven bevel gear is meshed with a driven bevel gear. A stirring blade rotatably connected to the vacuum tank 1 is fixedly connected to the inner side of the wheel, the bottom of the stirring blade penetrates into the interior of the vacuum tank 1, an air guide hole is opened on the top of the stirring blade, a cross bar is fixedly connected to the surface of the stirring blade, an exhaust cavity connected to the air guide hole is opened on the surface of the cross bar, a rotating joint fixedly connected and connected to the three-way pipe 45 is fixedly connected to the top of the stirring blade, the radiator 42 includes a cooling fan, the air outlet end of the cooling fan is fixedly connected to an air guide hopper connected to the three-way solenoid valve 43, a semiconductor refrigerator is installed on the surface of the air guide hopper, the cooling end of the semiconductor refrigerator penetrates into the interior of the air guide hopper, and the surface of the guide pipe 2 is fixedly connected and connected to an electric valve;

[0026] When the temperature controller 41 detects that the temperature inside the vacuum tank 1 exceeds a preset value, the temperature controller 41 controls the servo motor, the cooling fan, the semiconductor refrigerator and the upper electric valve to start according to a preset program. The servo motor drives the stirring blade to quickly stir the urea resin inside the vacuum tank 1 through the active bevel gear and the driven bevel gear. At the same time, the cooling fan draws the outside air into the air guide hopper. The cooling end of the semiconductor refrigerator quickly cools the air passing through. The cooled air enters the three-way solenoid valve 43 along the air guide hopper. The three-way solenoid valve 43 guides the cooling air into the connected filter mechanism 44 to filter dust and moisture, so that dry and clean cold air enters the three-way pipe 45, and then is discharged to the inside of the vacuum tank 1 through the rotary joint, the air guide hole, and the exhaust cavity in turn. The cold air quickly cools the urea resin passing through the vacuum tank 1 in the process of passing through the vacuum tank 1 to avoid high temperature of the urea resin. Then, the air entrained with heat is discharged to the outside along the upper material guide pipe 2 until the temperature controller 41 detects the temperature inside the vacuum tank 1 at the bottom of the preset value.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, the heat dissipation device 4 includes a temperature controller 41, a radiator 42, a three-way solenoid valve 43, two filter mechanisms 44, a three-way pipe 45 and a humidity controller 46. The temperature controller 41 is fixedly connected to the inner top wall of the vacuum tank 1, the radiator 42 is fixedly connected to the top of the vacuum tank 1, one end of the radiator 42 is fixedly connected and connected to the three-way solenoid valve 43, the two filter mechanisms 44 are respectively fixedly connected and connected to the other two ends of the three-way solenoid valve 43, and the three-way pipe 45 is fixedly connected and connected to the two filter mechanisms. The humidity controller 46 is installed inside the three-way pipe 45, and the other end of the three-way pipe 45 is fixedly connected and communicated with the agitator 3; the surface of the three-way pipe 45 is fixedly connected and communicated with two one-way valves 47, and the two one-way valves 47 are symmetrically distributed on both sides of the humidity controller 46, and the blocking direction of the one-way valve 47 is the same as the direction of the three-way pipe 45 toward the filtering mechanism 44; the top of the humidity controller 46 passes through the outside of the three-way pipe 45, and the top of the humidity controller 46 is fixedly connected with an audible and visual alarm 48.

[0028] like Figure 4As shown, the filtering mechanism 44 includes a mounting cylinder 441, and the surface of the mounting cylinder 441 is slidably connected with two threaded joints 442, and the two threaded joints 442 are respectively threadedly connected and communicated with the three-way solenoid valve 43 and the three-way pipe 45, and the interior of the mounting cylinder 441 is filled with a desiccant 443, and both ends of the mounting cylinder 441 are fixedly connected with an anti-slip ring, which is arranged on the inner side of the threaded joint 442, and the diameter of the anti-slip ring is larger than the inner diameter of the connection between the threaded joint 442 and the mounting cylinder 441; the mounting cylinder 441 is a transparent PVC material component, and the desiccant 443 is a color-changing silica gel material component; the mounting cylinder 441 is a transparent PVC material component, and the desiccant 443 is a color-changing silica gel material component; A first filter screen 444 is fixedly connected to the interior of the mounting cylinder 441, and a second filter screen 445 is fixedly connected to the interior of the mounting cylinder 441. The first filter screen 444 and the second filter screen 445 are symmetrically distributed on both sides of the desiccant 443; an internal thread 446 is provided inside the mounting cylinder 441, and a threaded sleeve 447 is threadedly connected to the inner side of the internal thread 446. The second filter screen 445 is embedded and installed on the inner side of the threaded sleeve 447. The second filter screen 445 is fixedly connected to the mounting cylinder 441 through the threaded sleeve 447 and the internal thread 446; an adjusting piece 448 is fixedly connected to one end of the threaded sleeve 447, and the corners of the adjusting piece 448 are rounded;

[0029] The staff can directly observe the color of the desiccant 443 through the transparent installation tube 441. When the staff needs to replace the failed desiccant 443, the staff only needs to unscrew the two threaded joints 442 from the three-way solenoid valve 43 and the three-way pipe 45 at the same time. At this time, the installation tube 441 is no longer blocked, and the staff can remove the installation tube 441. Then, the staff unscrews the threaded sleeve 447 together with the second filter 445 from the internal thread 446 through the adjusting piece 448. At this time, one end of the installation tube 441 is completely exposed to the outside, and the staff can pour out the failed desiccant 443 for replacement.

[0030] When the utility model is in use, after the cold air passes through the filter mechanism 44 and enters the interior of the three-way pipe 45, the humidity controller 46 detects the humidity of the cold air passing through in real time, and compares the detection data with the preset data. When the detection data is greater than the preset data, the humidity controller 46 controls the three-way solenoid valve 43 to cut off the connection with the original filter mechanism 44 according to the preset program, and connects with another filter mechanism 44. At this time, the cold air enters the unused filter mechanism 44 for filtration and drying, which can ensure that the cold air entering the vacuum tank 1 remains dry, so that the humidity of the environment where the urea resin is stored is always at a low state, so as to extend the storage time of the urea resin.

[0031] It should be noted that the temperature controller 41, three-way solenoid valve 43, humidity controller 46, sound and light alarm 48, servo motor, cooling fan, semiconductor refrigerator and electric valve in the above description are all devices with relatively mature application of existing technology. The specific models can be selected according to actual needs. At the same time, the temperature controller 41, three-way solenoid valve 43, humidity controller 46, sound and light alarm 48, servo motor, cooling fan, semiconductor refrigerator and electric valve can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A storage device for urea resin production, characterized in that: include: A vacuum tank (1), wherein the top and bottom of the vacuum tank (1) are respectively fixedly connected and communicated with a material guide pipe (2), a stirrer (3) is installed on the top of the vacuum tank (1), and the bottom of the stirrer (3) penetrates into the interior of the vacuum tank (1); A heat dissipation device (4) for rapidly reducing the internal temperature of the vacuum tank (1), the heat dissipation device (4) being installed between the vacuum tank (1) and the stirrer (3), and one end of the heat dissipation device (4) penetrating into the interior of the vacuum tank (1); The heat dissipation device (4) comprises a temperature controller (41), a radiator (42), a three-way solenoid valve (43), two filter mechanisms (44), a three-way pipe (45) and a humidity controller (46); the temperature controller (41) is fixedly connected to the inner top wall of the vacuum tank (1); the radiator (42) is fixedly connected to the top of the vacuum tank (1); one end of the radiator (42) is fixedly connected to and communicated with the three-way solenoid valve (43); two filter mechanisms (44) are respectively fixedly connected to and communicated with the other two ends of the three-way solenoid valve (43); the three-way pipe (45) is fixedly connected to and communicated between the two filter mechanisms (44); the humidity controller (46) is installed inside the three-way pipe (45); and the other end of the three-way pipe (45) is fixedly connected to and communicated with the agitator (3).

2. A storage device for urea resin production according to claim 1, characterized in that: The surface of the three-way pipe (45) is fixedly connected and communicated with two one-way valves (47), and the two one-way valves (47) are symmetrically distributed on both sides of the humidity controller (46). The blocking direction of the one-way valve (47) is the same as the direction of the three-way pipe (45) toward the filtering mechanism (44).

3. A storage device for urea resin production according to claim 1, characterized in that: The top of the humidity controller (46) penetrates to the outside of the three-way pipe (45), and the top of the humidity controller (46) is fixedly connected with an audible and visual alarm (48).

4. The storage device for urea resin production according to claim 1, characterized in that: The filtering mechanism (44) comprises a mounting cylinder (441), the surface of which is slidably connected with two threaded joints (442), the two threaded joints (442) being threadedly connected to and communicating with a three-way solenoid valve (43) and a three-way pipe (45) respectively, and the interior of the mounting cylinder (441) is filled with a desiccant (443).

5. A storage device for urea resin production according to claim 4, characterized in that: The installation cylinder (441) is a transparent PVC material component, and the desiccant (443) is a color-changing silica gel material component.

6. A storage device for urea resin production according to claim 4, characterized in that: A first filter screen (444) is fixedly connected to the interior of the installation cylinder (441), and a second filter screen (445) is fixedly connected to the interior of the installation cylinder (441); the first filter screen (444) and the second filter screen (445) are symmetrically distributed on both sides of the desiccant (443).

7. A storage device for urea resin production according to claim 6, characterized in that: The interior of the installation cylinder (441) is provided with an internal thread (446), the inner side of the internal thread (446) is threadedly connected to a threaded sleeve (447), the second filter screen (445) is embedded and installed on the inner side of the threaded sleeve (447), and the second filter screen (445) is fixedly connected to the installation cylinder (441) via the threaded sleeve (447) and the internal thread (446).

8. A storage device for urea resin production according to claim 7, characterized in that: One end of the threaded sleeve (447) is fixedly connected to an adjustment piece (448), and the corners of the adjustment piece (448) are rounded.

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