Nitrogen-phosphorus-potassium-silicon quaternary fertilizer production drying device

Abstract

A nitrogen-phosphorus-potassium-silicon quaternary fertilizer production drying device comprises a roller, a heat preservation supporting cover is installed outside the roller, a heating cavity is formed between the roller and the heat preservation supporting cover, the two ends of the roller extend out of the heat preservation supporting cover respectively, a heating device is installed on the heat preservation supporting cover or in the heating cavity, and the roller is driven by a driving structure to rotate. The heat preservation supporting cover comprises a first cover body and a second cover body, and heating devices are installed on the first cover body and the second cover body respectively. The heat preservation supporting cover is divided into the first cover body and the second cover body, the heating devices on the first cover body and the second cover body heat the roller, the temperature of the side, located on the first cover body, of the roller is the normal heating temperature, and the temperature of the side, located on the second cover body, of the roller is close to the environment temperature; therefore, the temperature difference when quaternary fertilizer particles are discharged from the discharging end of the roller is reduced, and the fertilizer particles are prevented from cracking and breaking.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production equipment, in particular to a nitrogen, phosphorus, potassium and silicon quaternary fertilizer production drying device. Background Art

[0002] When producing nitrogen, phosphorus, potassium and silicon quaternary fertilizers, the granulated fertilizer particles need to be dried. The drying equipment currently used is a drum-type drying equipment, with a heat preservation support cover installed on the outside of the drum, and a natural gas burner installed on the heat preservation support cover. The drum rotates in the heat preservation support cover, and the natural gas burner heats the heating cavity between the drum and the heat preservation support cover, thereby heating the drum. The quaternary fertilizer particles turn over in the drum, and are driven by the spiral blades inside the drum to move to the unloading end of the drum. During the movement, the quaternary fertilizer particles are dried.

[0003] At present, when the quaternary fertilizer granules are dried, the dried fertilizer granules are broken, and the breakage will cause the particle size of the fertilizer granules to decrease, thereby reducing the slow-release effect of the fertilizer during use.

[0004] After investigation by the technical department, it was found that the temperature inside the drum was too high. When the quaternary fertilizer particles were discharged from the drum discharge end, the surface temperature of the quaternary fertilizer particles dropped rapidly due to the relatively low ambient temperature, while the internal temperature dropped relatively slowly. The temperature difference between the inside and outside of the fertilizer particles was large, which caused the fertilizer particles to crack and break. Therefore, a plan to transform the existing drying equipment was proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device, by dividing the heat-insulating support cover into a first cover body and a second cover body, the heating devices on the first cover body and the second cover body heat the drum respectively, the temperature of the drum on the side of the first cover body is the normal heating temperature, and the temperature of the drum on the side of the second cover body is close to the ambient temperature, thereby reducing the temperature difference when the quaternary fertilizer particles are discharged from the discharge end of the drum, and preventing the fertilizer particles from cracking and breaking.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device, including a drum, a heat-insulating support cover is installed on the outside of the drum, a heating chamber is arranged between the drum and the heat-insulating support cover, both ends of the drum extend out of the heat-insulating support cover respectively, a heating device is installed on the heat-insulating support cover or in the heating chamber, the drum is rotated by the driving of a driving structure, the heat-insulating support cover includes a first cover body and a second cover body, the first cover body is located on the feeding end side of the drum, the second cover body is located on the material handling end side of the drum, the first cover body and the second cover body are respectively supported by a bracket, and heating devices are respectively installed on the first cover body and the second cover body.

[0007] The driving structure includes a ring gear, a driver and a supporting structure, wherein the supporting structure is used to rotatably support the roller, the ring gear is installed on the roller between the first cover body and the second cover body, and a driving gear is installed on the output shaft of the driver, and the driving gear meshes with the ring gear for transmission.

[0008] The roller is rotatably connected to the first cover body and the second cover body respectively through bearings or rollers, thereby forming the supporting structure.

[0009] The supporting structure includes a guide groove ring and a supporting wheel group. The guide groove rings are respectively installed at both ends of the drum, and the supporting wheel group is supported below the guide groove ring; the supporting wheel group includes a base, a double-ear seat and a supporting wheel. Two double-ear seats are installed on the base, and the rotating shaft at the center of the supporting wheel is installed on the double-ear seat. The annular groove on the outer circumference of the guide groove ring is located on the two supporting wheels.

[0010] An exhaust hood is installed at the feeding end of the drum, an exhaust pipe is installed on the top of the exhaust hood, and a feed hopper is also installed on the exhaust hood on the side away from the drum, and the feed hopper extends into the drum; an air collecting hood is installed at the discharging end of the drum, and a discharge port is arranged at the bottom of the air collecting hood.

[0011] A heater is also installed on the first cover body, and the heater includes a box body and a heating tube. One end of the box body is connected to the first cover body, and the other end is connected to the exhaust pipe through the exhaust pipe. The heating tube is installed in the box body, one end of the heating tube extends out of the box body, and the other end is connected to the air inlet of the fan through the air supply pipe, and the air outlet of the fan is connected to the air collecting hood.

[0012] The heating device is a burner, and a plurality of burners are respectively installed at the bottom of the first cover body and the bottom of the second cover body.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model divides the heat preservation support cover into a first cover body and a second cover body. The heating devices on the first cover body and the second cover body heat the drum respectively. The temperature of the drum on the side of the first cover body is a normal heating temperature, while the temperature of the drum on the side of the second cover body is close to the ambient temperature, thereby reducing the temperature difference when the quaternary fertilizer particles are discharged from the discharge end of the drum, preventing the fertilizer particles from cracking and breaking.

[0015] 2. A heater is also installed on the first cover body of the utility model. The first cover body also carries relatively high temperature exhaust gas which enters the box body from the top of the first cover body, heats the heating tube by the exhaust gas, and the fan extracts the hot air in the heating tube and then introduces it into the air collecting hood, so that the discharge end of the drum inhales the hot air, thereby stabilizing the temperature of the low temperature zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0019] Figure 3 for Figure 1 Schematic diagram of the AA section structure.

[0020] Figure 4 for Figure 2 Schematic diagram of the BB section structure.

[0021] Figure 5 This is a schematic diagram of the structure of the gas collecting hood of the utility model.

[0022] Reference numerals

[0023] Drum 10, gear ring 11, driver 12, driving gear 121, guide groove ring 13, supporting wheel set 14; base 141, double ear seat 142, supporting wheel 143, heating chamber 15;

[0024] A heat preservation support cover 20, a first cover body 21, a second cover body 22, and a bracket 23;

[0025] Heating device 30, exhaust hood 40, exhaust cylinder 41, feed hopper 42, exhaust pipe 43;

[0026] Fan 50, air supply pipe 51;

[0027] Heater 60, box 61, heating tube 62, filter screen 63;

[0028] Gas collecting hood 70 and material outlet 71 . DETAILED DESCRIPTION

[0029] Embodiment 1:

[0030] See also Figure 1-5 A nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device includes a drum 10, a heat preservation support cover 20 is installed on the outside of the drum 10, a heating chamber 15 is arranged between the drum 10 and the heat preservation support cover 20, both ends of the drum 10 extend out of the heat preservation support cover 20 respectively, a heating device 30 is installed on the heat preservation support cover 20 or in the heating chamber 15, the drum 10 is rotated by the driving of a driving structure, the heat preservation support cover 20 includes a first cover body 21 and a second cover body 22, the first cover body 21 is located on the feeding end side of the drum 10, the second cover body 22 is located on the material handling end side of the drum 10, the first cover body 21 and the second cover body 22 are supported by brackets 23 respectively, and the first cover body 21 and the second cover body 22 are respectively installed with heating devices 30.

[0031] By dividing the heat-insulating support cover 20 into a first cover body 21 and a second cover body 22, the heating devices 30 on the first cover body 21 and the second cover body 22 heat the drum 10 respectively. The temperature of the drum 10 on the side of the first cover body 21 is the normal heating temperature, while the temperature of the drum 10 on the side of the second cover body 22 is close to the ambient temperature, thereby reducing the temperature difference when the quaternary fertilizer particles are discharged from the discharge end of the drum 10, preventing the fertilizer particles from cracking and breaking.

[0032] When in use, the air temperature in the drum 10 on the side of the first cover body 21 is controlled at about 100°C, and the temperature in the drum 10 on the side of the second cover body 22 is controlled at about 60°C.

[0033] In this embodiment, see Figure 1 The driving structure includes a ring gear 11, a driver 12 and a supporting structure. The supporting structure is used to rotatably support the drum 10. The ring gear 11 is installed on the drum 10 between the first cover body 21 and the second cover body 22. A driving gear 121 is installed on the output shaft of the driver 12. The driving gear 121 is meshed with the ring gear 11 for transmission. The driver 12 includes a motor and a reducer. The output shaft of the motor is connected to the input shaft of the reducer for transmission. The output shaft of the reducer is installed with a driving gear 121. The motor and the reducer can be installed on a concrete installation foundation on the ground, or on a metal base, and the metal base is then installed on the concrete installation foundation on the ground.

[0034] In one embodiment, the drum 10 is rotatably connected to the first cover 21 and the second cover 22 through bearings or rollers, thereby forming the support structure. In this embodiment, bearings can be installed on the inner walls at both ends of the first cover 21 and the second cover 22, and the drum 10 is connected to the bearings, so that the rotation support of the drum 10 can be achieved. Of course, multiple rollers can also be installed on the inner walls at both ends of the first cover 21 and the second cover 22. The drum 10 is limited in the multiple rollers, so that the rotation support of the drum 10 can be achieved.

[0035] In another embodiment, see Figure 2 , 3The supporting structure includes a guide groove ring 13 and a support wheel group 14. The guide groove rings 13 are respectively installed at both ends of the drum 10, and the support wheel group 14 is supported below the guide groove ring 13; the support wheel group 14 includes a base 141, a double-ear seat 142 and a support wheel 143. Two double-ear seats 142 are installed on the base 141, and the rotating shaft at the center of the support wheel 143 is installed on the double-ear seat 142, so that the support wheel 143 can rotate freely, and the annular groove on the outer circumference of the guide groove ring 13 is located on the two support wheels 143, thereby limiting the support wheel 143 and the guide groove ring 13. During installation, the support wheel group 14 is installed on the concrete installation foundation on the ground through the base 141, and two guide groove rings 13 are installed on the drum 10, and the two support wheel groups 14 support the two guide groove rings 13 respectively.

[0036] See also Figure 1 , 2 The feeding end of the drum 10 is provided with an exhaust hood 40, the top of which is provided with an exhaust cylinder 41, and the exhaust hood 40 is provided with a feed hopper 42 on the side away from the drum 10, the feed hopper 42 extends into the drum 10; the discharging end of the drum 10 is provided with an air collecting hood 70, and the bottom of the air collecting hood 70 is provided with a discharge port 71. Since the exhaust cylinder 41 is provided on the exhaust hood 40, the hot air in the drum 10 moves from the discharging end to the feeding end, so that one end of the second hood body 22 is always in a low temperature zone.

[0037] For details, see Figure 1 , 2 An exhaust pipe 43 is installed on the first cover body 21 and the second cover body 22 respectively, and the exhaust pipe 43 is connected to the exhaust pipe 41 for exhaust.

[0038] Furthermore, since the hot air in the drum 10 moves from the discharge end to the feed end, the discharge end of the drum 10 will inhale ambient air, which will reduce the temperature of the drum 10 at the end of the second cover 22, so that the temperature of the low temperature zone cannot be maintained at about 60°C. Figure 2 A heater 60 is also installed on the first cover body 21. The heater 60 includes a box body 61 and a heating tube 62. One end of the box body 61 is connected to the first cover body 21, and the other end is connected to the exhaust pipe 41 through the exhaust pipe 43. The heating tube 62 is installed in the box body 61. One end of the heating tube 62 extends out of the box body 61, and the other end is connected to the air inlet of the fan 50 through the air supply pipe 51. The air outlet of the fan 50 is connected to the air collecting hood 70. The heating tube 62 adopts a fin dry-burning heating tube. The first cover body 22 also has relatively high-temperature exhaust gas entering the box body 61 from the top of the first cover body 22. The box body 61 has a heat preservation function. The heating tube 62 is heated by the exhaust gas. The fan 50 extracts the hot air in the heating tube 62 and then introduces it into the air collecting hood 70. See Figure 5, so that the discharge end of the drum 10 inhales warm air, thereby stabilizing the temperature of the low-temperature zone.

[0039] Preferably, the fan 50 is a blower. When in use, the fan 50 is electrically connected to the frequency converter, and the frequency converter is used to adjust the speed of the fan 50, thereby adjusting the air volume. When the temperature of the air blown out by the fan 50 is higher than 60°C, the frequency converter is used to reduce the speed of the fan 50, thereby reducing the air volume, so that a part of the ambient air enters the air collecting hood 70 from the discharge port 71 and mixes with the hot air, thereby adjusting the air temperature.

[0040] Furthermore, a filter screen 63 is installed at one end of the heating tube 62 exposed in the box body 61, and the filter screen 63 is used to filter debris in the air.

[0041] See also Figure 1 , 2 The heating device 30 is a burner, and a plurality of burners are respectively installed at the bottom of the first cover body 21 and the second cover body 22. The burner is a natural gas burner.

[0042] The heating device 30 may also be an electric heating tube, which is installed in the heating chamber 15 .

[0043] The working process or principle of the utility model is as follows:

[0044] When using, see Figure 2 The driver 12 is started, driving the driving gear 121 to rotate, and since the driving gear 121 is meshed with the gear ring 11, the drum 10 is driven to rotate. The first cover 21 and the second cover 22 heat the drum 10 respectively, and the air temperature in the drum 10 on the side of the first cover 21 is controlled at about 100°C, and the temperature in the drum 10 on the side of the second cover 22 is controlled at about 60°C.

[0045] The granulated quaternary fertilizer particles are fed into the drum 10 from the feed hopper 42 . The fertilizer particles are turned over in the drum 10 , and driven by the spiral blades inside the drum, they move toward the unloading end of the drum. During the movement, the quaternary fertilizer particles are dried.

[0046] At the same time, the exhaust gas with a certain temperature in the first cover body 22 enters the box body 61 from the top of the first cover body 22, and heats the heating tube 62 through the exhaust gas. The fan 50 extracts the hot air in the heating tube 62 and then introduces it into the air collecting hood 70, so that the discharge end of the drum 10 inhales the warm air, thereby stabilizing the temperature of the low temperature zone.

[0047] In this way, when the quaternary fertilizer particles are discharged from the discharge port 71 of the air collecting hood 70 , the temperature is controlled at about 60° C., thereby reducing the temperature difference when the quaternary fertilizer particles are discharged from the discharge port 71 .

Claims

1. A nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device, comprising a drum (10), a heat-insulating support cover (20) is installed outside the drum (10), a heating chamber (15) is arranged between the drum (10) and the heat-insulating support cover (20), two ends of the drum (10) extend out of the heat-insulating support cover (20), a heating device (30) is installed on the heat-insulating support cover (20) or in the heating chamber (15), the drum (10) is driven by a driving structure to rotate, and is characterized in that: The heat-insulating support cover (20) comprises a first cover body (21) and a second cover body (22), the first cover body (21) being located on a feeding end side of the drum (10), and the second cover body (22) being located on a handling end side of the drum (10), the first cover body (21) and the second cover body (22) being supported by brackets (23) respectively, and heating devices (30) being installed on the first cover body (21) and the second cover body (22) respectively.

2. A nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device according to claim 1, characterized in that: The driving structure comprises a gear ring (11), a driver (12) and a support structure, wherein the support structure is used to rotatably support the roller (10), the gear ring (11) is mounted on the roller (10) between a first cover body (21) and a second cover body (22), and a driving gear (121) is mounted on an output shaft of the driver (12), and the driving gear (121) is meshed with the gear ring (11) for transmission.

3. A nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device according to claim 2, characterized in that: The roller (10) is rotatably connected to the first cover body (21) and the second cover body (22) respectively via bearings or rollers, thereby forming the support structure.

4. A nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device according to claim 2, characterized in that: The support structure comprises a guide groove ring (13) and a support wheel group (14); the guide groove rings (13) are respectively installed at both ends of the roller (10); the support wheel group (14) is supported below the guide groove ring (13); the support wheel group (14) comprises a base (141), a double-ear seat (142) and a support wheel (143); two double-ear seats (142) are installed on the base (141); a rotating shaft at the center of the support wheel (143) is installed on the double-ear seat (142); and an annular groove on the outer circumference of the guide groove ring (13) is located on the two support wheels (143).

5. The drying device for producing nitrogen, phosphorus, potassium and silicon quaternary fertilizer according to claim 1, characterized in that: An exhaust hood (40) is installed at the feeding end of the drum (10), an exhaust cylinder (41) is installed at the top of the exhaust hood (40), and a feeding hopper (42) is also installed on the exhaust hood (40) at a side away from the drum (10), and the feeding hopper (42) extends into the drum (10); an air collecting hood (70) is installed at the discharging end of the drum (10), and a discharging port (71) is provided at the bottom of the air collecting hood (70).

6. A nitrogen, phosphorus, potassium and silicon quaternary fertilizer production and drying device according to claim 5, characterized in that: A heater (60) is also mounted on the first cover body (21). The heater (60) comprises a box body (61) and a heating pipe (62). One end of the box body (61) is connected to the first cover body (21), and the other end is connected to the exhaust pipe (41) via the exhaust pipe (43). The heating pipe (62) is mounted in the box body (61). One end of the heating pipe (62) extends out of the box body (61), and the other end is connected to the air inlet of the fan (50) via the air supply pipe (51). The air outlet of the fan (50) is connected to the air collecting hood (70).

7. The drying device for producing nitrogen, phosphorus, potassium and silicon quaternary fertilizer according to claim 1, characterized in that: The heating device (30) is a burner, and a plurality of burners are respectively installed at the bottom of the first cover body (21) and the bottom of the second cover body (22).

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