Novel urea raw material purification device and method

Abstract

The invention relates to the technical field of urea raw material purification, in particular to a novel urea raw material purification device and a method thereof.The novel urea raw material purification device comprises an upper shell, a cleaning mechanism, a cleaning and drying mechanism and a circulating filtering mechanism, the bottom end of the upper shell is fixedly connected with a lower shell, and one end of the upper shell is connected with a feeding port; a cleaning mechanism is arranged in the upper shell and used for cleaning the screening plate, a cleaning and drying mechanism is arranged in the lower shell and used for cleaning and drying urea raw materials, and a circulating filtering mechanism is arranged in the lower shell and used for filtering and circulating clear water obtained after the urea raw materials are cleaned. The device not only is simple and convenient to operate, but also can fully screen and clean urea raw materials, so that the purity of the urea raw materials is improved, the purity of produced urea is further improved, a user does not need to carry out purification work, the production cycle of the user is shortened, and the production cost of the user is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of urea raw material purification, and in particular to a novel urea raw material purification device and a method thereof. Background Art

[0002] In the process of obtaining the initial raw materials for urea production, solid impurities may be present. For example, when urea is produced from coal, the synthesis gas produced after coal combustion or gasification may carry solid particles such as coal slag. If these solid particles are not effectively purified, they will enter the subsequent urea synthesis process. When urea is produced from natural gas, although natural gas itself is in a gaseous state, a small amount of solid impurities such as rust and dust in the pipeline may be mixed in during its transportation and pretreatment. These impurities will enter the urea synthesis device along with the raw gas. In addition, some auxiliary raw materials used in the urea production process, such as catalyst carriers, may be in solid form. If these solid materials are broken or worn during the reaction, they may also exist in the raw materials in the form of solid impurities. In some urea production processes, solid urea may be used as a raw material for further processing. For example, when producing high-purity automotive urea, industrial-grade solid urea may be used for purification. In this case, solid urea, as the main raw material, needs to undergo a series of operations such as dissolution and purification to remove impurities in it to meet the quality requirements of automotive urea. At present, some existing urea raw material purification devices are in use, but the purification effect is not ideal, resulting in low purity of subsequent urea production, which requires multiple purifications, resulting in longer production cycles and higher costs for users. Summary of the invention

[0003] The object of the present invention is to provide a novel urea raw material purification device and method thereof, so as to solve the problem that some of the existing urea raw material purification devices mentioned in the above background technology have unsatisfactory purification effects during use, resulting in low purity of subsequent urea production, and then multiple purifications are required, resulting in a longer production cycle and increased costs for users. The present scheme is not only simple and convenient to operate, but also can fully screen and clean the urea raw materials, thereby improving the purity of the urea raw materials, and then improving the purity of the produced urea, so that users do not need to perform purification work, thereby reducing the production cycle of users and reducing the production costs of users.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel urea raw material purification device and method thereof, the device comprising an upper shell, a cleaning mechanism, a cleaning and drying mechanism and a circulating filtering mechanism, the bottom end of the upper shell is fixedly connected to a lower shell, one end of the upper shell is connected to a feed port, a screening box is arranged inside the upper shell, and the screening box is inclined, two groups of screening plates are evenly fixedly connected inside the screening box, the bottom end of the screening box is connected to three groups of discharge nozzles, and the discharge nozzles are all inclined, the high end of the screening box is connected to the feed port through a rubber ring, and the bottom end of the screening box is connected to the feed port. A vibration motor is provided, and a guide sleeve is evenly fixedly connected to the inner wall of the upper shell body, guide rods are evenly fixedly connected to both sides of the screening box, and one end of the guide rods is respectively slidably connected to the guide sleeves, one end of the guide rods is fixedly connected to a spring, and one end of the spring is fixedly connected to the inside of the screening box, a cleaning mechanism is provided inside the upper shell body for cleaning the screening plate, a cleaning and drying mechanism is provided inside the lower shell body for cleaning and drying the urea raw material, and a circulating filtering mechanism is provided inside the lower shell body for filtering and circulating the clean water after cleaning the urea raw material.

[0005] Preferably, the cleaning mechanism includes a high-pressure fan, a sealing plate, a connecting rod and an electric push rod. The bottom end of the upper shell is provided with a high-pressure fan, and the output end of the high-pressure fan is connected to the bottom end of the screening box through a hose, one end of the discharge nozzle is connected to the sealing plate through a rotating shaft, one end of the sealing plate is fixedly connected to a connecting rod, one end of the discharge nozzle is connected to the electric push rod through a rotating shaft, and the output ends of the electric push rods are respectively connected to one end of the connecting rod through the rotating shaft, so as to facilitate the cleaning of the screening plate, avoid reducing the screening effect of the screening plate, and ensure that impurities in the raw material are removed.

[0006] Preferably, the control ends of the vibration motor, high-pressure fan and electric push rod are all electrically connected to an external power source through an external switch, so as to facilitate the operation of the device.

[0007] Preferably, the cleaning and drying mechanism includes a material guide pipe, a cleaning box, a material lifting barrel, a spiral material push rod, a first motor, a stirring plate, a second motor, a drying box, a hot air blower, a hot air pipe, a material blocking air plate and a material dropping plate. One end of the lower shell is fixedly connected to the cleaning box, the top of the cleaning box is connected to the material guide pipe, and the top of the material guide pipe is connected to the upper shell, one end of the discharge nozzle is located inside the material guide pipe, a material lifting barrel is provided inside the lower shell, and the bottom end of the material lifting barrel is connected to the bottom end of the cleaning box, the inside of the material lifting barrel is connected to the spiral material push rod through a bearing, one end of the material lifting barrel is provided with a first motor, and the output end of the first motor is fixedly connected to one end of the spiral material push rod, the inside of the cleaning box is connected to the stirring plate through a bearing, and one side of the cleaning box is provided A second motor is provided, and the output end of the second motor is fixedly connected to one end of the stirring plate, a drying box is provided in the middle of the lower shell body, a hot air blower is provided at the top of the drying box, the output end of the hot air blower is connected to three groups of hot air ducts, and the bottom ends of the hot air ducts are connected to the bottom of the drying box, six groups of material-blocking air plates are evenly and fixedly connected inside the drying box, and the material-blocking air plates of two adjacent groups are symmetrically inclined, a blanking plate is fixedly connected to one end of the drying box, and the blanking plate is located on one side of the lowest group of material-blocking air plates, and the blanking plate is inclined, a discharge port is provided at the top of the lifting barrel, and the discharge port is located at the top of the drying box, and one end of the lifting barrel is connected to the drying box, which is convenient for users to clean and dry the raw materials and further improve the purity of the raw materials.

[0008] Preferably, the control ends of the first motor, the second motor and the hot air blower are all electrically connected to an external power source through an external switch, so as to facilitate the operation of the device.

[0009] Preferably, the middle part of the cleaning box is a symmetrical slope, and the connection between the cleaning box and the lifting barrel is the lowest end of the cleaning box, which facilitates the raw materials inside the cleaning box to enter the interior of the lifting barrel. The inclination angle of the stirring plate is the same as that of one side of the cleaning box, and the lifting barrel is inclined. The inclination angle and direction of the lifting barrel and the stirring plate are the same, which facilitates the transfer of materials through the lifting barrel.

[0010] Preferably, the circulation filtering mechanism includes a clean water bucket, a sewage bucket, a purification bucket, a drain pipe, a solenoid valve, a water supply pipe, a feeding plate, an agitator, a first connecting pipe, a first water pump, a second connecting pipe, a second water pump, a third connecting pipe, a third water pump and a fourth connecting pipe. A clean water bucket is arranged inside the lower shell, a sewage bucket is arranged on one side of the clean water bucket, a purification bucket is arranged on one side of the lower shell, and the purification bucket is located on one side of the discharge port, a drain pipe is connected to the bottom end of the purification bucket, and one end of the drain pipe is located on the outside of the lower shell, a solenoid valve is arranged in the middle of the drain pipe, a water supply pipe is connected to the top of the purification bucket, a feeding plate is connected to the top of the purification bucket, and the feeding plate is located on the top of the water supply pipe, an agitator is arranged inside the purification bucket, and the agitator The top of the device is located outside the purification barrel, the top of the purification barrel is connected to the first connecting pipe, and one end of the first connecting pipe is located at the bottom of the sewage barrel, a first water pump is arranged in the middle of the first connecting pipe, one end of the cleaning box is connected to the second connecting pipe, and one end of the second connecting pipe is located at the bottom of the clean water barrel, a second water pump is arranged in the middle of the second connecting pipe, the bottom end of the lifting barrel is connected to the third connecting pipe, and one end of the third connecting pipe is connected to the sewage barrel, a third water pump is arranged in the middle of the third connecting pipe, a fourth connecting pipe is connected to the middle and lower part of the purification barrel, and one end of the fourth connecting pipe is connected to the clean water barrel, a fourth water pump is arranged in the middle of the fourth connecting pipe, which can ensure the cleanliness of the raw material cleaning and maximize the purity of the raw material.

[0011] Preferably, the control ends of the solenoid valve, the agitator, the first water pump, the second water pump, the third water pump and the fourth water pump are all electrically connected to an external power supply through an external switch, so as to facilitate the operation of the device.

[0012] The operation method of the device: Step 1: Screening. The raw materials are poured into the feed port. At this time, the vibration motor drives the screening box and the screening plate to vibrate. The vibrating screening plate can screen the raw materials and discharge the impurities through the discharge nozzle. The upper set of screening plates can screen out the large particles of impurities in the raw materials, and the lower set can screen out the small particles of impurities. The raw materials are discharged through the discharge nozzle between the two sets of screening plates and enter the inside of the discharge nozzle through the guide pipe. Step 2: Cleaning. After running for a period of time, some particles will be blocked inside the screen plate. At this time, the electric push rod and the connecting rod can make the sealing plate block the discharge nozzle, and the high-pressure fan can discharge high-pressure air to the bottom of the screen box. Under the action of air pressure, the particles blocked by the screen plate can be pushed upward, thereby cleaning the screen plate; Step 3: Cleaning: After the screened raw materials enter the cleaning box through the material guide pipe, the second motor and the stirring plate can clean the raw materials in the cleaning box to remove the dust on the surface; Step 4: Drying. The cleaned raw materials enter the lifting barrel and are transported to the interior of the drying box through the first motor, the spiral push rod and the discharge port. The passage time of the raw materials can be delayed by multiple sets of inclined and symmetrical material-blocking air plates. When the raw materials pass through the material-blocking air plates, the high-temperature air generated by the hot air blower enters the interior of the drying box through the hot air pipe, thereby drying the raw materials. The raw materials continue to slide down through the material-blocking air plates and are finally discharged from the device through the blanking plate. Step five: circulation, the clean water inside the clean water bucket can be slowly transported to the inside of the cleaning box through the second connecting pipe and the second water pump, and the sewage inside the cleaning box and the lifting bucket can be transported to the inside of the sewage bucket for storage through the third connecting pipe and the third water pump, the purified clean water inside the purification bucket can be transported to the inside of the clean water bucket through the fourth connecting pipe and the fourth water pump, and the sewage inside the sewage bucket can be transported to the inside of the purification bucket through the first connecting pipe and the first water pump. Then the user adds alum and activated carbon to the inside of the purification bucket through the feeding plate, and the agitator can fully mix them with the sewage, and then let them stand after mixing, so that the small particles in the sewage can gather together and finally settle to the bottom of the purification bucket. When the user needs to input the evolved clean water inside the purification bucket into the inside of the clean water bucket, the solenoid valve is controlled to open at this time to discharge the impurities precipitated at the bottom of the purification bucket through the sewage pipe, and the user can replenish clean water in the purification bucket through the water replenishment pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When the user controls the device to start up completely and then pours the raw materials into the feed port, the vibration motor drives the screening box to vibrate, and the screening box continuously stretches and compresses the spring through the guide rod, thereby ensuring that the screening box is in a vibrating state. The vibrating screening plate can screen the raw materials and discharge the impurities through the discharge nozzle. The upper set of screening plates can screen out large particles of impurities in the raw materials, and the lower set can screen out small particles of impurities. The raw materials are discharged through the discharge nozzle between the two sets of screening plates and enter the inside of the discharge nozzle through the guide pipe. After running for a period of time, some particles will be blocked in the inside of the screening plate. At this time, the electric push rod and the connecting rod can make the sealing plate rotate, and the sealing plate can block the discharge nozzle. At this time, the high-pressure fan can High-pressure air is discharged to the bottom of the screening box, so that the air is discharged upward through the screening plate and finally discharged through the feed port. Under the action of air pressure, the particles blocked by the screening plate can be pushed upward, thereby cleaning the screening plate and avoiding reducing the screening effect of the screening plate, ensuring that impurities in the raw materials are removed. After the screened raw materials enter the cleaning box through the guide pipe, the stirring plate is driven to rotate by the second motor, and the clean water inside the cleaning box is stirred by the stirring plate. At the same time, the raw materials can also be stirred, so that the raw materials in the cleaning box can be cleaned by the second motor to wash off the dust on the surface. The cleaned raw materials enter the lifting barrel and can be transported to the discharge port by the first motor and the spiral push rod, and enter the interior of the drying box through the discharge port. The raw materials pass The material-blocking air plate continuously slides down and finally discharges the device through the blanking plate. The multiple sets of inclined and symmetrical material-blocking air plates can delay the passing time of the raw materials to ensure that the raw materials are fully dried. When the raw materials pass through the material-blocking air plate, the high-temperature air generated by the hot air blower enters the interior of the drying box through the hot air duct, thereby making the interior of the drying box in a high-temperature state, and then the raw materials can be dried. The clean water in the clean water bucket can be slowly transported to the interior of the cleaning box through the second connecting pipe and the second water pump. At the same time, the sewage in the cleaning box and the lifting bucket can be transported to the interior of the sewage bucket for storage through the third connecting pipe and the third water pump. When the clean water in the clean water bucket is transported, the clean water in the sewage bucket is also full, and the clean water in the purification bucket can be pumped into the sewage bucket through the fourth connecting pipe and the fourth water pump. The purified clean water is transported to the inside of the clean water barrel, and the sewage in the sewage barrel can be transported to the inside of the purification barrel through the first connecting pipe and the first water pump. Then the user adds alum and activated carbon to the inside of the purification barrel through the feeding plate, and can fully mix them with the sewage through the agitator. After mixing, let it stand, so that the small particles in the sewage can gather together and finally settle to the bottom of the purification barrel. When the user needs to input the evolved clean water in the purification barrel into the inside of the clean water barrel, the solenoid valve is controlled to open at this time to discharge the impurities precipitated at the bottom of the purification barrel through the sewage pipe. The user can replenish clean water in the purification barrel through the water supply pipe to ensure the normal amount of internal circulating water. This device is not only simple and convenient to operate, but also can fully screen and clean the urea raw materials.This improves the purity of urea raw materials and the purity of urea production, eliminating the need for users to perform purification work, thereby reducing the user's production cycle and production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a cross-sectional perspective schematic diagram of the present invention; Figure 3 It is a cross-sectional stereoscopic schematic diagram of the upper shell, the screening box and the screening plate in the present invention; Figure 4 It is a three-dimensional schematic diagram of the connecting rod and the electric push rod in the present invention; Figure 5 It is a cross-sectional perspective schematic diagram of the cleaning box, the material lifting bucket and the drying box in the present invention; Figure 6 It is a cross-sectional perspective schematic diagram of a drying box and a material-blocking air plate in the present invention; Figure 7 It is a three-dimensional schematic diagram of the circulation filtering mechanism in the present invention.

[0015] In the figure: 1, upper shell; 2, feed inlet; 3, lower shell; 4, screening box; 5, screening plate; 6, discharge nozzle; 7, vibration motor; 8, high pressure fan; 9, guide sleeve; 10, guide rod; 11, spring; 12, sealing plate; 13, connecting rod; 14, electric push rod; 15, material guide pipe; 16, cleaning box; 17, lifting barrel; 18, spiral push rod; 19, first motor; 20, stirring plate; 21, second motor; 22, drying box; 23, hot Fan; 24. Hot air duct; 25. Material blocking air plate; 26. Dropping plate; 27. Discharge port; 28. Clean water bucket; 29. ​​Sewage bucket; 30. Purification bucket; 31. Drain pipe; 32. Solenoid valve; 33. Water supply pipe; 34. Feeding plate; 35. Agitator; 36. First connecting pipe; 37. First water pump; 38. Second connecting pipe; 39. Second water pump; 40. Third connecting pipe; 41. Third water pump; 42. Fourth connecting pipe; 43. Fourth water pump. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 7 , an embodiment provided by the present invention: A novel urea raw material purification device and method thereof, the device comprises an upper shell 1, a cleaning mechanism, a cleaning and drying mechanism and a circulating filtering mechanism, the bottom end of the upper shell 1 is fixedly connected with a lower shell 3, one end of the upper shell 1 is connected with a feed port 2, a screening box 4 is arranged inside the upper shell 1, and the screening box 4 is inclined, two groups of screening plates 5 are evenly fixedly connected inside the screening box 4, the bottom end of the screening box 4 is connected with three groups of discharge nozzles 6, and the discharge nozzles 6 are all inclined, the high end of the screening box 4 is connected to the feed port 2 through a rubber ring, the bottom end of the screening box 4 is provided with a vibration motor 7, the upper shell 1 The inner wall of the screen box 4 is evenly fixedly connected with a guide sleeve 9, both sides of the screen box 4 are evenly fixedly connected with guide rods 10, and one end of the guide rods 10 is respectively slidably connected with the guide sleeves 9, one end of the guide rods 10 is fixedly connected with a spring 11, and one end of the spring 11 is fixedly connected to the inside of the screen box 4, and a cleaning mechanism is arranged inside the upper shell 1 for cleaning the screen plate 5, and a cleaning and drying mechanism is arranged inside the lower shell 3 for cleaning and drying the urea raw material, and a circulating filtering mechanism is arranged inside the lower shell 3 for filtering and circulating the clean water after cleaning the urea raw material; See also Figure 2-Figure 4 In this embodiment, the cleaning mechanism includes a high-pressure fan 8, a sealing plate 12, a connecting rod 13 and an electric push rod 14. The bottom end of the upper shell 1 is provided with a high-pressure fan 8, and the output end of the high-pressure fan 8 is connected to the bottom end of the screening box 4 through a hose, one end of the discharge nozzle 6 is connected to the sealing plate 12 through a rotating shaft, one end of the sealing plate 12 is fixedly connected to the connecting rod 13, one end of the discharge nozzle 6 is connected to the electric push rod 14 through a rotating shaft, and the output end of the electric push rod 14 is respectively connected to one end of the connecting rod 13 through a rotating shaft. After running for a period of time, some particles will be blocked inside the screening plate 5. At this time The sealing plate 12 can be rotated by the electric push rod 14 and the connecting rod 13, and the discharge nozzle 6 can be blocked by the sealing plate 12. At this time, the high-pressure air can be discharged to the bottom end of the screening box 4 by the high-pressure fan 8, so that the air is discharged upward through the screening plate 5 and finally discharged through the feed port 2. Under the action of air pressure, the particles blocked by the screening plate 5 can be pushed upward, so as to clean the screening plate 5 and avoid reducing the screening effect of the screening plate 5, so as to ensure that impurities in the raw materials are removed, and it is convenient to clean the screening plate 5 and avoid reducing the screening effect of the screening plate 5 and ensure that impurities in the raw materials are removed; See also Figure 2 , Figure 5 and Figure 6, in this embodiment, the cleaning and drying mechanism includes a feed pipe 15, a cleaning tank 16, a lifting bucket 17, a spiral feeding rod 18, a first motor 19, a stirring plate 20, a second motor 21, a drying oven 22, a hot air blower 23, a hot air pipe 24, a material blocking air plate 25, and a blanking plate 26. One end of the lower housing 3 is fixedly connected to the cleaning tank 16. The top of the cleaning tank 16 is connected to the feed pipe 15, and the top of the feed pipe 15 is connected to the upper housing 1. One end of the discharge nozzle 6 is located inside the feed pipe 15. A lifting bucket 17 is arranged inside the lower housing 3, and the bottom end of the lifting bucket 17 is connected to the bottom end of the cleaning tank 16. The spiral feeding rod 18 is connected inside the lifting bucket 17 through a bearing. One end of the lifting bucket 17 is provided with a first motor 19, and the output end of the first motor 19 is fixedly connected to one end of the spiral feeding rod 18. The stirring plate 20 is connected inside the cleaning tank 16 through a bearing. One side of the cleaning tank 16 is provided with a second motor 21, and the output end of the second motor 21 is fixedly connected to one end of the stirring plate 20. A drying oven 22 is arranged in the middle of the lower housing 3. A hot air blower 23 is arranged at the top of the drying oven 22. The output end of the hot air blower 23 is connected to three groups of hot air pipes 24, and the bottom ends of the hot air pipes 24 are all connected to the bottom of the drying oven 22. Six groups of material blocking air plates 25 are evenly and fixedly connected inside the drying oven 22, and two adjacent groups of material blocking air plates 25 are symmetrically inclined. One end of the drying oven 22 is fixedly connected to a blanking plate 26, and the blanking plate 26 is located on one side of the lowest group of material blocking air plates 25. The blanking plate 26 is inclined. An outlet 27 is opened at the top end of the lifting bucket 17, and the outlet 27 is located at the top of the drying oven 22. One end of the lifting bucket 17 is connected to the drying oven 22. After the screened raw materials enter the cleaning tank 16 through the feed pipe 15, the second motor 21 drives the stirring plate 20 to rotate. The stirring plate 20 stirs the clear water inside the cleaning tank 16 and can also stir the raw materials, so that the second motor 21 can clean the raw materials in the cleaning tank 16 and wash the dust on their surfaces. The washed raw materials enter the lifting bucket 17, and the first motor 19 and the spiral feeding rod 18 can transport them to the outlet 27 and enter the inside of the drying oven 22 through the outlet 27. The raw materials slide down continuously through the material blocking air plates 25 and are finally discharged from the device through the blanking plate 26. The multi-group of inclined and symmetric material blocking air plates 25 can delay the passing time of the raw materials and ensure that the raw materials are dried sufficiently. When the raw materials pass through the material blocking air plates 25, at this time, the high-temperature air generated by the hot air blower 23 enters the inside of the drying oven 22 through the hot air pipes 24, so that the inside of the drying oven 22 is in a high-temperature state, and then the raw materials can be dried, which is convenient for users to clean and dry the raw materials and further improve the purity of the raw materials; Please refer to Figure 2 , Figure 5 and Figure 7In this embodiment, the circulation filtering mechanism includes a clean water bucket 28, a sewage bucket 29, a purification bucket 30, a sewage pipe 31, a solenoid valve 32, a water supply pipe 33, a feeding plate 34, an agitator 35, a first connecting pipe 36, a first water pump 37, a second connecting pipe 38, a second water pump 39, a third connecting pipe 40, a third water pump 41 and a fourth connecting pipe 42. The clean water bucket 28 is arranged inside the lower shell 3, the sewage bucket 29 is arranged on one side of the clean water bucket 28, the purification bucket 30 is arranged on one side of the lower shell 3, and the purification bucket 30 is located on one side of the discharge port 27. The bottom end of the purification bucket 30 is connected to the sewage pipe 31, and one end of the sewage pipe 31 is located on the outside of the lower shell 3. The middle part of the sewage pipe 31 is provided with a solenoid valve 32, and the top of the purification bucket 30 is connected to the water supply pipe 33. A water pipe 33 is provided, and a feeding plate 34 is connected to the top of the purification barrel 30, and the feeding plate 34 is located at the top of the water supply pipe 33. An agitator 35 is arranged inside the purification barrel 30, and the top of the agitator 35 is located outside the purification barrel 30. A first connecting pipe 36 is connected to the top of the purification barrel 30, and one end of the first connecting pipe 36 is located at the bottom of the sewage barrel 29, and a first water pump 37 is arranged in the middle of the first connecting pipe 36. A second connecting pipe 38 is connected to one end of the cleaning box 16, and one end of the second connecting pipe 38 is located at the bottom of the clean water barrel 28, and a second water pump 39 is arranged in the middle of the second connecting pipe 38. A third connecting pipe 40 is connected to the bottom of the lifting barrel 17, and one end of the third connecting pipe 40 is connected to the sewage barrel 29, and the middle of the third connecting pipe 40 A third water pump 41 is provided in the middle of the purification barrel 30, a fourth connecting pipe 42 is connected to the middle and lower part of the purification barrel 30, and one end of the fourth connecting pipe 42 is connected to the clean water barrel 28, and a fourth water pump 43 is provided in the middle of the fourth connecting pipe 42. The clean water inside the clean water barrel 28 can be slowly transported to the inside of the cleaning box 16 through the second connecting pipe 38 and the second water pump 39. At the same time, the sewage inside the cleaning box 16 and the lifting bucket 17 can be transported to the inside of the sewage barrel 29 for storage through the third connecting pipe 40 and the third water pump 41. When the clean water inside the clean water barrel 28 is transported, the clean water inside the sewage barrel 29 is also full. The clean water purified in the purification barrel 30 can be transported to the inside of the clean water barrel 28 through the fourth connecting pipe 42 and the fourth water pump 43. , all the sewage in the sewage barrel 29 can be transported to the inside of the purification barrel 30 through the first connecting pipe 36 and the first water pump 37, and then the user adds alum and activated carbon to the inside of the purification barrel 30 through the feeding plate 34, and can fully mix them with the sewage through the agitator 35, and then let it stand after mixing, so that the small particles in the sewage can clump together and finally settle to the bottom of the purification barrel 30. When the user needs to input the evolved clean water in the purification barrel 30 into the inside of the clean water barrel 28, the solenoid valve 32 is controlled to open at this time to discharge the impurities precipitated at the bottom of the purification barrel 30 through the sewage pipe 31. The user can replenish clean water in the purification barrel 30 through the water replenishment pipe 33, thereby ensuring the normal amount of internal circulation water and the cleanliness of the raw material cleaning.Maximize the purity of raw materials; It should be noted that the control ends of the vibration motor 7, the high-pressure fan 8 and the electric push rod 14 are all electrically connected to the external power supply through an external switch, which is convenient for the operation of the device. The control ends of the first motor 19, the second motor 21 and the hot air blower 23 are all electrically connected to the external power supply through an external switch, which is convenient for the operation of the device. The middle part of the cleaning box 16 is a symmetrical inclined plane, and the connection between the cleaning box 16 and the lifting barrel 17 is the lowest end of the cleaning box 16, which is convenient for the raw materials inside the cleaning box 16 to enter the inside of the lifting barrel 17. The inclination angle of the stirring plate 20 is the same as that of one side of the cleaning box 16. The lifting barrel 17 is inclined, and the inclination angle and direction of the lifting barrel 17 and the stirring plate 20 are the same, which is convenient for transferring materials through the lifting barrel 17. The control ends of the solenoid valve 32, the agitator 35, the first water pump 37, the second water pump 39, the third water pump 41 and the fourth water pump 43 are all electrically connected to the external power supply through an external switch, which is convenient for the operation of the device. The device operates as follows: Step 1: Screening, the raw material is poured into the inside of the feed port 2, and the vibration motor 7 drives the screening box 4 and the screening plate 5 to vibrate. The vibrating screening plate 5 can screen the raw material and discharge the impurities through the discharge nozzle 6. The upper group of screening plates 5 can screen out the large particles of impurities in the raw material, and the lower group can screen out the small particles of impurities. The raw material is discharged through the discharge nozzle 6 between the two groups of screening plates 5 and enters the inside of the discharge nozzle 6 through the guide pipe 15; Step 2: Cleaning: After running for a period of time, some particles will be blocked inside the screen plate 5. At this time, the electric push rod 14 and the connecting rod 13 can make the sealing plate 12 block the discharge nozzle 6, and the high-pressure fan 8 can discharge high-pressure air to the bottom of the screen box 4. Under the action of air pressure, the particles blocked by the screen plate 5 can be pushed upward, thereby cleaning the screen plate 5; Step 3: Cleaning: After the sieved raw materials enter the cleaning box 16 through the material guide pipe 15, the second motor 21 and the stirring plate 20 can clean the raw materials in the cleaning box 16 to wash away the dust on the surface; Step 4: Drying. The cleaned raw materials enter the lifting barrel 17, and are transported to the interior of the drying box 22 through the first motor 19, the spiral push rod 18 and the discharge port 27. The passage time of the raw materials can be delayed by multiple sets of inclined and symmetrical material blocking air plates 25. When the raw materials pass through the material blocking air plates 25, the high-temperature air generated by the hot air blower 23 enters the interior of the drying box 22 through the hot air pipe 24, thereby drying the raw materials. The raw materials continue to slide down through the material blocking air plates 25, and finally are discharged from the device through the blanking plate 26. Step 5: Circulation, the clean water in the clean water bucket 28 can be slowly transported to the inside of the cleaning box 16 through the second connecting pipe 38 and the second water pump 39, and the sewage in the cleaning box 16 and the lifting bucket 17 can be transported to the inside of the sewage bucket 29 for storage through the third connecting pipe 40 and the third water pump 41, and the clean water purified in the purification bucket 30 can be transported to the inside of the clean water bucket 28 through the fourth connecting pipe 42 and the fourth water pump 43, and the sewage in the sewage bucket 29 can be transported to the clean water bucket 28 through the first connecting pipe 36 and the first water pump 37. The user then adds alum and activated carbon into the purification barrel 30 through the feeding plate 34, and can fully mix them with the sewage through the agitator 35. After mixing, let it stand to make the small particles in the sewage clump together and finally settle to the bottom of the purification barrel 30. When the user needs to input the evolved clean water in the purification barrel 30 into the clean water barrel 28, the solenoid valve 32 is first controlled to open to discharge the impurities precipitated at the bottom of the purification barrel 30 through the sewage pipe 31, and the user can replenish clean water in the purification barrel 30 through the water replenishment pipe 33.

[0018] When the user controls the device to start up completely and then pours the raw material into the feed port 2, the vibration motor 7 drives the screening box 4 to vibrate, and the screening box 4 continuously stretches and compresses the spring 11 through the guide rod 10, so as to prevent the screening box 4 from hitting the inner wall of the upper shell 1. At the same time, the movement distance of the screening box 4 can be limited under the action of the spring 11's own resilience, thereby ensuring that the screening box 4 is in a vibrating state, and the raw material can be screened by the vibrating screening plate 5, and the impurities can be discharged through the discharge nozzle 6. The large particles of impurities in the raw material can be screened out through the upper group of screening plates 5, and the small particles of impurities can be screened out through the lower group. The raw material is discharged through the discharge nozzle 6 between the two groups of screening plates 5, and enters the inside of the discharge nozzle 6 through the guide pipe 15. After running for a period of time, some particles will be blocked inside the screening plate 5. At this time, the sealing plate 12 can be rotated by the electric push rod 14 and the connecting rod 13, and the discharge nozzle 6 can be blocked by the sealing plate 12. At this time, the high-pressure air can be discharged to the bottom of the screening box 4 through the high-pressure fan 8, so that the air is discharged upward through the screening plate 5 and finally discharged through the feed port 2. Under the action of air pressure, the particles blocked by the screening plate 5 can be pushed upward, so as to clean the screening plate 5 and avoid reducing the screening effect of the screening plate 5, so as to ensure that impurities in the raw materials are removed. After the screened raw materials enter the cleaning box 16 through the guide pipe 15, the stirring plate 20 is driven to rotate by the second motor 21, and the clean water inside the cleaning box 16 is stirred by the stirring plate 20. At the same time, the raw materials can also be stirred, so that the raw materials in the cleaning box 16 can be cleaned by the second motor 21, and the dust on the surface can be washed off. The cleaned raw materials enter the lifting barrel 17, and can be transported to the discharge port 27 by the first motor 19 and the spiral push rod 18, and enter the interior of the drying box 22 through the discharge port 27. The raw materials continue to slide down through the material-blocking air plate 25 and finally discharge from the device through the blanking plate 26. The passing time of the raw materials can be delayed by multiple groups of inclined and symmetrical material-blocking air plates 25 to ensure that the raw materials are fully dried. When the raw materials pass through the material-blocking air plates 25, the high-temperature air generated by the hot air blower 23 enters the interior of the drying box 22 through the hot air pipe 24, thereby making the interior of the drying box 22 in a high-temperature state, and thus the raw materials can be dried. , the clean water in the clean water bucket 28 can be slowly transported to the inside of the cleaning box 16 through the second connecting pipe 38 and the second water pump 39, and the sewage in the cleaning box 16 and the lifting bucket 17 can be transported to the inside of the sewage bucket 29 for storage through the third connecting pipe 40 and the third water pump 41. When the clean water in the clean water bucket 28 is transported, the clean water in the sewage bucket 29 is also full. The purified clean water in the purification bucket 30 can be transported to the inside of the clean water bucket 28 through the fourth connecting pipe 42 and the fourth water pump 43. The sewage in the sewage bucket 29 can be transported to the inside of the purification bucket 30 through the first connecting pipe 36 and the first water pump 37. Then the user adds alum and activated carbon to the inside of the purification bucket 30 through the feeding plate 34.The agitator 35 can fully mix it with the sewage, and then let it stand after mixing, so that the small particles in the sewage can gather together and finally settle to the bottom of the purification barrel 30. When the user needs to input the evolved clean water in the purification barrel 30 into the clean water barrel 28, the solenoid valve 32 is first controlled to open to discharge the impurities precipitated at the bottom of the purification barrel 30 through the sewage pipe 31. The user can replenish clean water in the purification barrel 30 through the water replenishment pipe 33 to ensure the normal amount of internal circulating water. This device is not only simple and convenient to operate, but also can fully screen and clean the urea raw materials, thereby improving the purity of the urea raw materials, and then improving the purity of the produced urea, so that the user does not need to perform purification work, thereby reducing the user's production cycle and reducing the user's production cost.

[0019] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A novel urea raw material purification device, characterized in that: The invention comprises an upper shell (1), a cleaning mechanism, a cleaning and drying mechanism and a circulating filtering mechanism, wherein the bottom end of the upper shell (1) is fixedly connected to a lower shell (3), one end of the upper shell (1) is connected to a feed port (2), a screening box (4) is arranged inside the upper shell (1), and the screening box (4) is inclined, two groups of screening plates (5) are evenly and fixedly connected inside the screening box (4), the bottom end of the screening box (4) is connected to three groups of discharge nozzles (6), and the discharge nozzles (6) are all inclined, the upper end of the screening box (4) is connected to the feed port (2) through a rubber ring, the bottom end of the screening box (4) is provided with a vibration motor (7), the inner part of the upper shell (1) is provided with a plurality of filter plates (5), and the filter plates (5) are arranged in a plurality of filter plates (5) ... The wall is evenly fixedly connected with a guide sleeve (9), both sides of the screening box (4) are evenly fixedly connected with guide rods (10), and one end of the guide rods (10) is respectively slidably connected to the guide sleeves (9), one end of the guide rods (10) is fixedly connected with a spring (11), and one end of the spring (11) is fixedly connected to the inside of the screening box (4), a cleaning mechanism is arranged inside the upper shell (1) for cleaning the screening plate (5), a cleaning and drying mechanism is arranged inside the lower shell (3) for cleaning and drying the urea raw material, and a circulating filtering mechanism is arranged inside the lower shell (3) for filtering and circulating the clean water after cleaning the urea raw material.

2. A novel urea raw material purification device according to claim 1, characterized in that: The cleaning mechanism comprises a high-pressure fan (8), a sealing plate (12), a connecting rod (13) and an electric push rod (14); the bottom end of the upper shell (1) is provided with a high-pressure fan (8), and the output end of the high-pressure fan (8) is connected to the bottom end of the screening box (4) through a hose; one end of the discharge nozzle (6) is connected to the sealing plate (12) through a rotating shaft; one end of the sealing plate (12) is fixedly connected to the connecting rod (13); one end of the discharge nozzle (6) is connected to the electric push rod (14) through a rotating shaft, and the output end of the electric push rod (14) is respectively connected to one end of the connecting rod (13) through a rotating shaft.

3. A novel urea raw material purification device according to claim 2, characterized in that: The control ends of the vibration motor (7), the high-pressure fan (8) and the electric push rod (14) are all electrically connected to an external power source via an external switch.

4. A novel urea raw material purification device according to claim 1, characterized in that: The cleaning and drying mechanism comprises a material guide pipe (15), a cleaning box (16), a material lifting bucket (17), a spiral material push rod (18), a first motor (19), a stirring plate (20), a second motor (21), a drying box (22), a hot air blower (23), a hot air pipe (24), a material blocking air plate (25) and a material blanking plate (26), one end of the lower shell (3) is fixedly connected to the cleaning box (16), the top end of the cleaning box (16) is connected to the material guide pipe (15), and the top end of the material guide pipe (15) is connected to the upper shell ( 1), one end of the discharge nozzle (6) is located inside the guide pipe (15), a lifting bucket (17) is provided inside the lower shell (3), and the bottom end of the lifting bucket (17) is connected to the bottom end of the cleaning box (16), the inside of the lifting bucket (17) is connected to a spiral push rod (18) through a bearing, one end of the lifting bucket (17) is provided with a first motor (19), and the output end of the first motor (19) is fixedly connected to one end of the spiral push rod (18), the inside of the cleaning box (16) is connected to the bottom end of the cleaning box (16), and the lifting bucket (17) is connected to the bottom end of the cleaning box (16). A stirring plate (20) is connected via a bearing, a second motor (21) is provided on one side of the cleaning box (16), and an output end of the second motor (21) is fixedly connected to one end of the stirring plate (20), a drying box (22) is provided in the middle of the lower shell (3), a hot air blower (23) is provided at the top of the drying box (22), the output end of the hot air blower (23) is connected to three groups of hot air pipes (24), and the bottom ends of the hot air pipes (24) are all connected to the bottom of the drying box (22), and the drying box (22) is provided with a hot air blower (23). Six groups of material-blocking air plates (25) are evenly and fixedly connected inside, and two adjacent groups of material-blocking air plates (25) are symmetrically inclined. A blanking plate (26) is fixedly connected to one end of the drying box (22), and the blanking plate (26) is located on one side of the lowest group of material-blocking air plates (25). The blanking plate (26) is inclined. A discharge port (27) is opened at the top of the lifting barrel (17), and the discharge port (27) is located at the top of the drying box (22). One end of the lifting barrel (17) is connected to the drying box (22).

5. A novel urea raw material purification device according to claim 4, characterized in that: The control ends of the first motor (19), the second motor (21) and the hot air blower (23) are all electrically connected to an external power source via an external switch.

6. A novel urea raw material purification device according to claim 4, characterized in that: The middle part of the cleaning box (16) is in the shape of a symmetrical inclined plane. The connection between the cleaning box (16) and the lifting bucket (17) is the lowest end of the cleaning box (16). The inclination angle of the stirring plate (20) is the same as that of one side of the cleaning box (16). The lifting bucket (17) is in an inclined shape. The inclination angle and direction of the lifting bucket (17) and the stirring plate (20) are the same.

7. A novel urea raw material purification device according to claim 4, characterized in that: The circulation filtering mechanism comprises a clean water bucket (28), a sewage bucket (29), a purification bucket (30), a sewage pipe (31), a solenoid valve (32), a water supply pipe (33), a feeding plate (34), an agitator (35), a first connecting pipe (36), a first water pump (37), a second connecting pipe (38), a second water pump (39), a third connecting pipe (40), a third water pump (41) and a fourth connecting pipe (42). The clean water bucket (28) is arranged inside the lower housing (3), and a sewage bucket (29) is arranged on one side of the clean water bucket (28). A water bucket (29), a purification bucket (30) is provided on one side of the lower shell (3), and the purification bucket (30) is located on one side of the discharge port (27), the bottom end of the purification bucket (30) is connected to a sewage discharge pipe (31), and one end of the sewage discharge pipe (31) is located outside the lower shell (3), a solenoid valve (32) is provided in the middle of the sewage discharge pipe (31), the top of the purification bucket (30) is connected to a water supply pipe (33), and the top end of the purification bucket (30) is connected to a feeding plate (34), and the feeding plate (34) is located on the water supply pipe (33). 3), a stirrer (35) is arranged inside the purification barrel (30), and the top end of the stirrer (35) is located outside the purification barrel (30), the top end of the purification barrel (30) is connected to a first connecting pipe (36), and one end of the first connecting pipe (36) is located at the bottom of the sewage barrel (29), a first water pump (37) is arranged in the middle of the first connecting pipe (36), and one end of the cleaning box (16) is connected to a second connecting pipe (38), and one end of the second connecting pipe (38) is located at the bottom of the clean water barrel (28). A second water pump (39) is disposed in the middle of the second connecting pipe (38); a third connecting pipe (40) is connected to the bottom end of the lifting bucket (17), and one end of the third connecting pipe (40) is connected to the sewage bucket (29); a third water pump (41) is disposed in the middle of the third connecting pipe (40); a fourth connecting pipe (42) is connected to the middle and lower part of the purification bucket (30), and one end of the fourth connecting pipe (42) is connected to the clean water bucket (28); a fourth water pump (43) is disposed in the middle of the fourth connecting pipe (42).

8. A novel urea raw material purification device according to claim 7, characterized in that: The control ends of the solenoid valve (32), the stirrer (35), the first water pump (37), the second water pump (39), the third water pump (41) and the fourth water pump (43) are all electrically connected to an external power supply via an external switch.

9. An operating method for a novel urea raw material purification device according to any one of claims 1 to 8, characterized in that: Step 1: Screening. The raw material is poured into the inside of the feed port (2). At this time, the vibration motor (7) drives the screening box (4) and the screening plate (5) to vibrate. The vibrating screening plate (5) can screen the raw material and discharge impurities through the discharge nozzle (6). The upper group of screening plates (5) can screen out large particles of impurities in the raw material, and the lower group can screen out small particles of impurities. The raw material is discharged through the discharge nozzle (6) between the two groups of screening plates (5) and enters the inside of the discharge nozzle (6) through the guide pipe (15); Step 2: Cleaning. After running for a period of time, some particles will be blocked inside the screening plate (5). At this time, the electric push rod (14) and the connecting rod (13) can make the sealing plate (12) block the discharge nozzle (6). The high-pressure fan (8) can discharge high-pressure air to the bottom of the screening box (4). Under the action of air pressure, the particles blocked by the screening plate (5) can be pushed upward, thereby cleaning the screening plate (5); Step 3: cleaning, after the sieved raw materials enter the cleaning box (16) through the material guide pipe (15), the second motor (21) and the stirring plate (20) can clean the raw materials in the cleaning box (16) to remove dust on the surface; Step 4: Drying. The cleaned raw materials enter the material lifting barrel (17) and are transported to the interior of the drying box (22) through the first motor (19), the spiral push rod (18) and the discharge port (27). The passage time of the raw materials can be delayed by a plurality of groups of inclined and symmetrical material blocking air plates (25). When the raw materials pass through the material blocking air plates (25), the high-temperature air generated by the hot air blower (23) enters the interior of the drying box (22) through the hot air pipe (24), thereby drying the raw materials. The raw materials continue to slide down through the material blocking air plates (25) and are finally discharged from the device through the blanking plate (26); Step 5: Circulation, the clean water in the clean water bucket (28) can be slowly transported to the inside of the cleaning box (16) through the second connecting pipe (38) and the second water pump (39), and at the same time, the sewage in the cleaning box (16) and the lifting bucket (17) can be transported to the inside of the sewage bucket (29) for storage through the third connecting pipe (40) and the third water pump (41), and the clean water purified in the purification bucket (30) can be transported to the inside of the clean water bucket (28) through the fourth connecting pipe (42) and the fourth water pump (43), and the sewage in the sewage bucket (29) can be completely removed through the first connecting pipe (36) and the first water pump (37). The purified water is transported to the interior of the purification barrel (30), and then the user adds alum and activated carbon to the interior of the purification barrel (30) through the feeding plate (34). The agitator (35) can fully mix the alum and activated carbon with the sewage. After mixing, the agitator (35) is allowed to stand to allow small particles in the sewage to clump together and finally settle to the bottom of the purification barrel (30). When the user needs to input the evolved clean water in the purification barrel (30) into the interior of the clean water barrel (28), the solenoid valve (32) is first controlled to open to discharge the impurities precipitated at the bottom of the purification barrel (30) through the sewage discharge pipe (31). The user can replenish the clean water in the purification barrel (30) through the water replenishment pipe (33).

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