CN209968398U

CN209968398U - Reation kettle is used in compound fertilizer production

Info

Publication number: CN209968398U
Application number: CN201920449041.7U
Authority: CN
Inventors: 刘永国
Original assignee: Hebei Chengcheng Fertilizer Co Ltd
Current assignee: Hebei Chengcheng Fertilizer Co Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-01-21
Anticipated expiration: 2029-04-04

Abstract

The utility model relates to the technical field of auxiliary devices of chemical fertilizer processing equipment, in particular to a reaction kettle for producing compound fertilizer, which reduces the retention time of high-concentration urine in a cylinder by rapidly melting urea granules into the high-concentration urine without adding water, thereby reducing the generation amount of biuret by the high-concentration urine in the cylinder and simultaneously reducing the generation amount of ammonia, namely reducing the waste of nitrogen in raw materials; the rotary drum comprises a drum body, a motor and three groups of supporting legs, wherein the left front side, the right front side and the rear side of the bottom end of the drum body are respectively connected with the top ends of the three groups of supporting legs; the steam heating device is characterized by further comprising a steam heater, a plurality of groups of conveying pipes, a plurality of groups of penetrating pipes, a filter plate, a support ring and a cover plate, wherein the circumferential side wall of the steam heater is slidably clamped with the circumferential side wall of the working cavity of the cylinder, and a flow cavity is arranged inside the steam heater.

Description

Reation kettle is used in compound fertilizer production

Technical Field

The utility model relates to a chemical fertilizer processing equipment auxiliary device's technical field especially relates to a reation kettle is used in compound fertilizer production.

Background

Along with the development and production requirements of urine slurry urea-based compound fertilizer process technology, sulfur-based compound fertilizer spraying nitrogen supplementing process technology and large-particle urea process technology, high-concentration urine plays an increasingly important role in the various process technologies, high-concentration urea can be directly provided by a urea factory, and other high-concentration urine mainly comes from direct melting of solid particle urea, wherein a reaction kettle for compound fertilizer production is a device for melting solid particles into high-concentration urine in the process of compound fertilizer production and processing, and is widely used in the field of compound fertilizer production; the existing reaction kettle for producing the compound fertilizer comprises a barrel body, a motor, a stirring rod, a steam heating coil and three groups of supporting legs, wherein the left front side, the right front side and the rear side of the bottom end of the barrel body are respectively connected with the top ends of the three groups of supporting legs, a working cavity is arranged inside the barrel body, the top end of the working cavity is communicated with and provided with a rotating hole, the bottom end of the motor is provided with a speed reducer, the bottom end of the speed reducer is rotatably provided with a rotating shaft, the bottom end of the rotating shaft rotates from the upper side of the barrel body to penetrate through the rotating hole and extend into the working cavity, the bottom end of the speed reducer is connected with the top end of the barrel body, the bottom end of the rotating shaft is connected with the top end of the stirring rod, the top end of the working cavity is communicated with and provided with a feeding pipe, the bottom end of the working cavity is communicated with and, the bottom of the left end and the top of the right end of a working cavity of the cylinder are respectively communicated with an output pipe and an input pipe, the input end and the output end of the steam heating coil are respectively communicated with the input pipe and the output pipe, and the top of the left end of the working cavity is communicated with a water replenishing pipe; when the existing reaction kettle for producing the compound fertilizer is used, firstly, steam is introduced into a steam heating coil through an input pipe and an output pipe, urea granules are added into a cylinder after the interior of the cylinder is preheated, a motor is started to drive a speed reducer to rotate, the speed reducer drives a stirring rod to rotate through a rotating shaft, a stirring paddle on the stirring rod starts to stir the urea granules, a proper amount of water is added into the cylinder, then the urea granules are heated to a certain temperature and then melted into liquid, and the melted liquid in the cylinder is discharged out of the cylinder through a discharging pipe; it is found in using that current reation kettle for compound fertilizer production uses, although be provided with agitating unit in the barrel, the mobility of urea aggregate is relatively poor, heating position in the barrel is located barrel inside edge zone simultaneously, it is visible to make the urea aggregate be heated the degree of consistency relatively poor, therefore urea need stop longer in the barrel, and urea can generate a large amount of biurets after stopping in the barrel for a long time, and urea decomposes out a large amount of ammonia under the effect of water, and the production of ammonia not only can lead to the nitrogen damage, promoted the further generation of biurets in the urine simultaneously, therefore the quality that makes the high concentration urine that the urea aggregate melts into is relatively poor, and caused the waste of raw materials, thereby lead to the practicality relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a through under the condition of not adding water, with the urea aggregate quick melting become the high concentration urine and reduce the dwell time of high concentration urine in the barrel, consequently reduced the volume that the high concentration urine generated the biuret in the barrel, reduced the formation of ammonia simultaneously, reduced the waste of nitrogen element in the raw materials promptly to the reation kettle is used in compound fertilizer production of reinforcing practicality.

The utility model discloses a reation kettle for compound fertilizer production, including barrel, motor and three groups of landing legs, the bottom left front side, right front side and the rear side of barrel are connected with the top of three groups of landing legs respectively, the inside of barrel is provided with the working chamber, the top intercommunication of working chamber is provided with the rotation hole, the bottom of motor is provided with the speed reducer, the bottom rotation of speed reducer is provided with the pivot, the bottom intercommunication of working chamber is provided with the discharge tube, the intercommunication is provided with the control valve on the discharge tube, the left end bottom and the right-hand member top of the working chamber of barrel communicate respectively and are provided with output tube and input tube; the steam heating device is characterized by further comprising a steam heater, a plurality of groups of conveying pipes, a plurality of groups of penetrating pipes, a filter plate, a support ring and a cover plate, wherein the circumferential side wall of the steam heater is clamped with the circumferential side wall of the working cavity of the barrel in a sliding mode, a flow cavity is arranged inside the steam heater, the top end and the bottom end of the flow cavity are respectively communicated with the upper portion and the lower portion of the working cavity and provided with a plurality of groups of upper extending holes and a plurality of groups of lower extending holes, a plurality of groups of input ends and a plurality of groups of output ends of the penetrating pipes are respectively communicated with the bottom ends of the plurality of groups of upper extending holes and the top ends of the plurality of groups of lower extending holes, the outer circumferential side wall of the support ring is connected with the bottom of the circumferential side wall of the working cavity, the bottom edge area of the filter plate is tightly attached to the top end of the support ring, the outer sides of the outflow hole and the inflow hole are communicated with the inner sides of the output pipe and the input pipe respectively, the top end of the working cavity is communicated with a maintenance port, the bottom end of the cover plate is connected with a flange at the top end of the barrel body, the top end of the cover plate is communicated with the working cavity and is provided with a plurality of groups of fixing holes, the tops of the plurality of groups of conveying pipes are sealed and inserted into the plurality of groups of fixing holes respectively from the lower side of the cover plate, and the bottom ends of the plurality of groups of conveying pipes are slid in the working cavity and are.

The utility model discloses a reation kettle is used in compound fertilizer production still includes and keeps off the ring, keep off the bottom of ring and be connected with the top edge region of apron.

The utility model discloses a reation kettle is used in compound fertilizer production still includes four group's support rods, mounting panel and distribution scraper blade, four group's support rods's bottom is connected with top front side, rear side, left side and the right side that keeps off the ring respectively, four group's support rods's top is connected with the bottom front side, rear side, left side and the right side of mounting panel respectively, the top middle part of mounting panel is run through and is provided with the patchhole, the downside that passes the patchhole and stretch out to the mounting panel is rotated from the upside of mounting panel to the bottom of the pivot of speed reducer, the bottom of speed reducer is connected with the top of mounting panel, the bottom of pivot is connected with the top middle part of.

The utility model discloses a reation kettle is used in compound fertilizer production still includes the water-drain mast, the right-hand member bottom intercommunication of working chamber is provided with the outlet, the input of water-drain mast passes the outlet and stretches into to the working chamber from the right side of barrel is sealed, the left end of water-drain mast and the right-hand member bottom intercommunication in steam heater's the chamber that flows.

The utility model discloses a reation kettle is used in compound fertilizer production, the well lower part region of the lateral wall of barrel is provided with the heat preservation.

The utility model discloses a reation kettle is used in compound fertilizer production still includes firm bearing, the bottom middle part intercommunication of mounting panel is provided with firm groove, the top in firm groove and the bottom intercommunication of patchhole, firm bearing clamps with firm groove is fixed, firm bearing is connected with the pivot interference.

The utility model discloses a reation kettle is used in compound fertilizer production still includes two sets of handles of carrying, the bottom of two sets of handles of carrying is connected with steam heater's top left side and right side respectively.

The utility model discloses a reation kettle is used in compound fertilizer production still includes two sets of handles of lifting, two sets of the inner of lifting the handle is connected with the left end and the right-hand member that keep off the ring respectively.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, introducing steam into a steam heater in a cylinder body through an input pipe, raising the temperature in the steam heater to a specified temperature, simultaneously raising the temperature in a plurality of groups of penetration pipes penetrating through the steam heater to the specified temperature, then placing urea granules on the top of a cover plate of the cylinder body, enabling the urea granules to fall into a plurality of groups of conveying pipes on the cover plate respectively, then conveying the urea granules into the plurality of groups of penetration pipes respectively by the plurality of groups of conveying pipes, continuously heating the urea granules in the falling process of the urea granules in the plurality of groups of penetration pipes, finally dropping the urea granules onto a filter screen at the bottom of the steam heater, continuing feeding until the plurality of groups of conveying pipes are filled with the urea granules, then heating the urea granules by the plurality of groups of penetration pipes through pipe walls, and keeping the urea granules in a state of being heated in all directions, therefore, the urea granules are heated uniformly, the melting speed is high, the melted high-concentration urine flows into the bottom of the cylinder through the filter screen on the lower side of the multiple groups of penetrating pipes, and then is discharged in time through the discharging pipe, the whole process can melt the urea granules into the high-concentration urine as soon as possible without adding water, after the urea granules in the multiple groups of conveying pipes are observed to descend, a worker can supplement the urea granules into the multiple groups of conveying pipes in time, so that the urea granules are rapidly melted into the high-concentration urine without adding water, the residence time of the high-concentration urine in the cylinder is reduced, the generation amount of biuret in the high-concentration urine in the cylinder is reduced, the generation amount of ammonia is reduced, namely, the waste of nitrogen in the raw materials is reduced, and the practicability is enhanced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the connection structure of the steam heater and the plurality of penetrating pipes according to the present invention;

FIG. 3 is a schematic view of the connection structure of the distribution scraper and the baffle ring of the present invention;

FIG. 4 is a schematic view of the connection structure of the filter plate and the filter screen according to the present invention;

in the drawings, the reference numbers: 1. a barrel; 2. a motor; 3. three sets of support legs; 4. a working chamber; 5. a speed reducer; 6. a rotating shaft; 7. a discharge pipe; 8. a control valve; 9. an output pipe; 10. an input tube; 11. a steam heater; 12. a plurality of groups of conveying pipes; 13. a plurality of sets of penetration pipes; 14. a filter plate; 15. a support ring; 16. a cover plate; 17. a filter screen; 18. a baffle ring; 19. four groups of support rods; 20. mounting a plate; 21. distributing scrapers; 22. a drain pipe; 23. a water drain hole; 24. a heat-insulating layer; 25. stabilizing the bearing; 26. two groups of lifting handles; 27. two groups of lifting handles; 28. a plurality of groups of upper extension holes; 29. a stabilizing groove; 30. a plurality of groups of fixing holes.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the utility model discloses a compound fertilizer production reaction kettle, including barrel 1, motor 2 and three groups of landing legs 3, the bottom left front side, right front side and the rear side of barrel 1 are connected with the top of three groups of landing legs 3 respectively, the inside of barrel 1 is provided with working chamber 4, the bottom of motor 2 is provided with speed reducer 5, the bottom of speed reducer 5 is rotated and is provided with pivot 6, the bottom of working chamber 4 communicates and is provided with discharge tube 7, it is provided with control valve 8 to communicate on discharge tube 7, the left end bottom and the right-hand member top of working chamber 4 of barrel 1 communicate respectively and are provided with output tube 9 and input tube 10; the steam heating device comprises a steam heater 11, a plurality of groups of conveying pipes 12, a plurality of groups of penetrating pipes 13, a filter plate 14, a support ring 15 and a cover plate 16, wherein the circumferential side wall of the steam heater 11 is slidably clamped with the circumferential side wall of a working chamber 4 of a barrel 1, a flow chamber is arranged inside the steam heater 11, the top end and the bottom end of the flow chamber are respectively communicated with the upper part and the lower part of the working chamber 4 and are provided with a plurality of groups of upper extending holes 28 and a plurality of groups of lower extending holes, a plurality of groups of input ends and a plurality of groups of output ends of the plurality of groups of penetrating pipes 13 are respectively communicated with the bottom end of the plurality of groups of upper extending holes 28 and the top end of the plurality of groups of lower extending holes, the outer circumferential side wall of the support ring 15 is connected with the bottom of the circumferential side wall of the working chamber 4, the edge area of the bottom end of the filter plate 14 is tightly attached to the The outer sides of the outflow hole and the inflow hole are respectively communicated with the inner sides of the output pipe 9 and the input pipe 10, the top end of the working cavity 4 is communicated with a maintenance port, the bottom end of the cover plate 16 is connected with a flange at the top end of the cylinder body 1, the top end of the cover plate 16 is communicated with the working cavity 4 and is provided with a plurality of groups of fixing holes 30, the tops of the plurality of groups of conveying pipes 12 are respectively and hermetically inserted into the plurality of groups of fixing holes 30 from the lower side of the cover plate 16, and the bottom ends of the plurality of groups of conveying pipes 12 are respectively and slidably inserted into the plurality; firstly, introducing steam into a steam heater in a cylinder body through an input pipe, raising the temperature in the steam heater to a specified temperature, simultaneously raising the temperature in a plurality of groups of penetration pipes penetrating through the steam heater to the specified temperature, then placing urea granules on the top of a cover plate of the cylinder body, enabling the urea granules to fall into a plurality of groups of conveying pipes on the cover plate respectively, then conveying the urea granules into the plurality of groups of penetration pipes respectively by the plurality of groups of conveying pipes, continuously heating the urea granules in the falling process of the urea granules in the plurality of groups of penetration pipes, finally dropping the urea granules onto a filter screen at the bottom of the steam heater, continuing feeding until the plurality of groups of conveying pipes are filled with the urea granules, then heating the urea granules by the plurality of groups of penetration pipes through pipe walls, and keeping the urea granules in a state of being heated in all directions, therefore, the urea granules are heated uniformly, the melting speed is high, the melted high-concentration urine flows into the bottom of the cylinder through the filter screen on the lower side of the multiple groups of penetrating pipes, and then is discharged in time through the discharging pipe, the whole process can melt the urea granules into the high-concentration urine as soon as possible without adding water, after the urea granules in the multiple groups of conveying pipes are observed to descend, a worker can supplement the urea granules into the multiple groups of conveying pipes in time, so that the urea granules are rapidly melted into the high-concentration urine without adding water, the residence time of the high-concentration urine in the cylinder is reduced, the generation amount of biuret in the high-concentration urine in the cylinder is reduced, the generation amount of ammonia is reduced, namely, the waste of nitrogen in the raw materials is reduced, and the practicability is enhanced.

The reaction kettle for producing the compound fertilizer also comprises a baffle ring 18, and the bottom end of the baffle ring 18 is connected with the edge area at the top end of the cover plate 16; through the fender ring at apron top, the effectual probability that has reduced the reinforced in-process of urea aggregate and has scattered to the barrel outside keeps off the ring and can increase the volume of apron top deposit urea aggregate simultaneously to the practicality has been strengthened.

The utility model discloses a reation kettle is used in compound fertilizer production still includes four group's support rod 19, mounting panel 20 and distribution scraper 21, four group's support rod 19's bottom is connected with the top front side, the rear side, left side and the right side of fender ring 18 respectively, four group's support rod 19's top is connected with mounting panel 20's bottom front side, the rear side, the left side and the right side respectively, mounting panel 20's top middle part is run through and is provided with the patchhole, the bottom of the pivot 6 of speed reducer 5 rotates from mounting panel 20's upside and passes the patchhole and stretch out to mounting panel 20's downside, the bottom of speed reducer 5 is connected with mounting panel 20's top, the bottom of pivot 6 is connected with distribution; after more urea granules are added into the baffle ring, the motor is driven by the rotating shaft of the speed reducer to rotate by the starting motor, and the urea granules are scraped at the top of the cover plate by the scraping action of the distribution scraper on the urea granules, so that the smoothness of automatic feeding of a plurality of groups of conveying pipes at the top of the cover plate is improved, and the practicability is enhanced.

The utility model discloses a reation kettle for compound fertilizer production still includes the outlet pipe 22, and the right-hand member bottom of working chamber 4 communicates and is provided with outlet 23, and the input of outlet pipe 22 passes outlet 23 and stretches into in the working chamber 4 from the right side seal of barrel 1, and the left end of outlet pipe 22 communicates with the right-hand member bottom of the flow chamber of steam heater 11; the drain pipe is lower than the input pipe of the steam heater, condensed water in the steam heater can be discharged in time through the drain pipe, the influence of the condensed water on the heating efficiency of the steam heater is reduced, and therefore the practicability is enhanced.

The utility model discloses a reaction kettle for producing compound fertilizer, wherein a heat preservation layer 24 is arranged in the middle-lower area of the outer side wall of a barrel body 1; the heat loss of the steam heater is reduced by arranging the heat preservation layer for the barrel, so that the heating efficiency is improved, and the practicability is enhanced.

The utility model discloses a reation kettle for compound fertilizer production still includes firm bearing 25, and the bottom middle part of mounting panel 20 communicates and is provided with firm groove 29, and the top of firm groove 29 communicates with the bottom of patchhole, and firm bearing 25 and firm groove 29 are fixed and clamped, and firm bearing 25 is connected with pivot 6 interference; the pivot is through rotating on firm bearing, the effectual pivot that has reduced to the patchhole of mounting panel wearing and tearing, makes the rotation of self more stable simultaneously to the practicality has been strengthened.

The reaction kettle for producing the compound fertilizer also comprises two groups of lifting handles 26, and the bottom ends of the two groups of lifting handles 26 are respectively connected with the left side and the right side of the top end of the steam heater 11; the steam heater is more convenient to take out for maintenance or repair in the barrel through two sets of lifting handles, so that convenience is enhanced.

The reaction kettle for producing the compound fertilizer also comprises two groups of lifting handles 27, and the inner ends of the two groups of lifting handles 27 are respectively connected with the left end and the right end of the baffle ring 18; the cover plate can be more conveniently assembled and disassembled on the barrel body through the two groups of lifting handles, so that the practicability is enhanced.

The utility model discloses a reation kettle is used in compound fertilizer production, it is at work, at first let in steam through the input tube in to the steam heater in the barrel, make the temperature in the steam heater rise to the assigned temperature, the firm in the multiunit piercing tube that passes steam heater simultaneously rises to the assigned temperature equally, at this moment after more urea aggregate is added in the top retaining ring of the apron of barrel, at this moment the starter motor makes the motor drive the distribution scraper blade through the pivot of speed reducer and rotates, through the scraping effect of distribution scraper blade to urea aggregate at the apron top, the smoothness degree that urea aggregate is the automatic feed supplement of multiunit conveying pipe at the apron top is improved, urea aggregate falls into the multiunit conveying pipe on the apron respectively at this moment, then urea aggregate is carried respectively to piercing tube to the multiunit by the multiunit conveyer pipe, in the whereabouts in the multiunit piercing tube of urea aggregate, be heated constantly, and finally, urea granules fall onto a filter screen at the bottom of the steam heater, feeding is continued until a plurality of groups of conveying pipelines are filled, a plurality of groups of penetration pipes are filled with the urea granules at the same time, then the urea granules are heated by the plurality of groups of penetration pipes through pipe walls, and the urea granules at the moment are basically in an all-dimensional heated state, so the urea granules are uniformly heated and are melted at a high speed, the melted high-concentration urine flows into the bottom of the cylinder through the filter screen at the lower side of the plurality of groups of penetration pipes and is discharged in time through a discharge pipe.

The terms "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A reaction kettle for compound fertilizer production comprises a barrel body (1), a motor (2) and three groups of supporting legs (3), wherein the left front side, the right front side and the rear side of the bottom end of the barrel body (1) are respectively connected with the top ends of the three groups of supporting legs (3), a working chamber (4) is arranged inside the barrel body (1), a speed reducer (5) is arranged at the bottom end of the motor (2), a rotating shaft (6) is rotatably arranged at the bottom end of the speed reducer (5), a discharge pipe (7) is communicated with the bottom end of the working chamber (4), a control valve (8) is communicated with the discharge pipe (7), and an output pipe (9) and an input pipe (10) are respectively communicated with the bottom of the left end and the top of the right end of the working chamber (; the steam heating device is characterized by further comprising a steam heater (11), a plurality of groups of conveying pipes (12), a plurality of groups of penetrating pipes (13), a filter plate (14), a support ring (15) and a cover plate (16), wherein the circumferential side wall of the steam heater (11) is slidably clamped with the circumferential side wall of the working cavity (4) of the barrel body (1), a flow cavity is arranged inside the steam heater (11), the top end and the bottom end of the flow cavity are respectively communicated with the upper part and the lower part of the working cavity (4) and provided with a plurality of groups of upper extending holes (28) and a plurality of groups of lower extending holes, a plurality of groups of input ends and a plurality of groups of output ends of the plurality of groups of penetrating pipes (13) are respectively communicated with the bottom ends of the plurality of groups of upper extending holes (28) and the top ends of the plurality of groups of lower extending holes, the outer circumferential side wall of the support ring (15) is connected with the bottom, the top end of the filter plate (14) is provided with a filter screen (17) in a penetrating way, the top end of the filter plate (14) is connected with the bottom end of the steam heater (11), the left end bottom and the right end top area of the flow cavity of the steam heater (11) are respectively provided with an outflow hole and an inflow hole in a communication way, the outer sides of the outflow hole and the inflow hole are respectively communicated with the inner sides of the output pipe (9) and the input pipe (10), the top end of the working cavity (4) is communicated with a maintenance port, the bottom end of the cover plate (16) is connected with the top end flange of the cylinder body (1), the top end of the cover plate (16) is communicated with the working cavity (4) and is provided with a plurality of groups of fixing holes (30), the tops of the conveying pipes (12) are respectively inserted into the fixing holes (30) from the lower side of the cover plate (16) in a sealing way, the bottom ends of the conveying pipes (12) are respectively inserted into the penetrating pipes (13) from the working cavity (4) in a sliding mode.

2. The reaction kettle for producing compound fertilizer as claimed in claim 1, further comprising a baffle ring (18), wherein the bottom end of the baffle ring (18) is connected with the edge area of the top end of the cover plate (16).

3. The reactor for producing compound fertilizer according to claim 2, further comprising four groups of support rods (19), a mounting plate (20) and distribution scrapers (21), wherein the bottom ends of the four groups of support rods (19) are respectively connected with the front side, the rear side, the left side and the right side of the top end of the baffle ring (18), the top ends of the four groups of support rods (19) are respectively connected with the front side, the rear side, the left side and the right side of the bottom end of the mounting plate (20), an insertion hole is formed in the middle of the top end of the mounting plate (20) in a penetrating manner, the bottom end of the rotating shaft (6) of the speed reducer (5) rotates from the upper side of the mounting plate (20) to penetrate through the insertion hole and extend to the lower side of the mounting plate (20), the bottom end of the speed reducer (5) is connected with the top end of the mounting plate (20), and the bottom end.

4. A compound fertilizer production reaction kettle according to claim 3, further comprising a drain pipe (22), wherein a drain hole (23) is formed in the bottom of the right end of the working cavity (4) in a communicating manner, the input end of the drain pipe (22) hermetically penetrates through the drain hole (23) from the right side of the cylinder body (1) and extends into the working cavity (4), and the left end of the drain pipe (22) is communicated with the bottom of the right end of the flow cavity of the steam heater (11).

5. The reaction kettle for producing the compound fertilizer as claimed in claim 4, wherein the middle-lower area of the outer side wall of the cylinder (1) is provided with an insulating layer (24).

6. The reaction kettle for producing the compound fertilizer as claimed in claim 5, further comprising a stabilizing bearing (25), wherein a stabilizing groove (29) is arranged in the middle of the bottom end of the mounting plate (20) in a communicating manner, the top end of the stabilizing groove (29) is communicated with the bottom end of the insertion hole, the stabilizing bearing (25) is fixedly clamped with the stabilizing groove (29), and the stabilizing bearing (25) is in interference connection with the rotating shaft (6).

7. The reaction kettle for producing compound fertilizer as claimed in claim 6, further comprising two sets of lifting handles (26), wherein the bottom ends of the two sets of lifting handles (26) are respectively connected with the left side and the right side of the top end of the steam heater (11).

8. The reaction kettle for producing the compound fertilizer as claimed in claim 7, further comprising two sets of lifting handles (27), wherein the inner ends of the two sets of lifting handles (27) are respectively connected with the left end and the right end of the baffle ring (18).