Uniformly heated compound fertilizer drying machine

Abstract

The utility model belongs to the technical field of drying machines, and particularly relates to a uniformly-heated compound fertilizer drying machine which comprises a base, a drying chamber arranged on the base, a heating cavity arranged at the bottom of the drying chamber, a heating device arranged in the heating cavity, and a feeding pipe and a discharging pipe respectively arranged at two ends of the drying chamber. A carrier gas input pipe and a carrier gas output pipe are arranged on the drying chamber, a conveying shaft is arranged in the drying chamber, a spiral blade is arranged on the conveying shaft, an inner cavity is formed in the spiral blade, a hot gas inlet and a hot gas outlet which are communicated with the inner cavity are formed in the two ends of the conveying shaft respectively, and a rotating joint is arranged between the hot gas inlet and the carrier gas output pipe for connection; a driving mechanism is arranged on the base, and a driving part is arranged between the driving mechanism and the conveying shaft for connection. Compared with the prior art, the drying machine is uniform in heating and better in drying effect in the compound fertilizer drying process, and is provided with a waste heat recycling system, so that the overall energy consumption is lower.

Description

Technical Field

[0001] The utility model belongs to the technical field of dryers, and particularly relates to a compound fertilizer dryer with uniform heating. Background Art

[0002] The conductive dryer is generally provided with a heating device at the bottom, and the bottom heat conduction plate of the drying chamber is heated by the heating device, and then the compound fertilizer is turned and conveyed in cooperation with the conveying mechanism, so that the compound fertilizer is intermittently in contact with the bottom heat conduction plate during the conveying process, and the internal water is evaporated by heat, thereby achieving the drying treatment of the compound fertilizer. Since the drying method in the prior art mainly relies on the contact with the heat conduction plate, the compound fertilizer will inevitably have uneven contact during the turning and conveying process, which will cause the compound fertilizer to be heated unevenly. The compound fertilizer with more contact with the heat conduction plate has a higher dryness, and the compound fertilizer with less contact with the heat conduction plate has a higher humidity, which ultimately results in poor drying effect. Therefore, there is a certain market demand for designing a compound fertilizer dryer with uniform heating. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a compound fertilizer dryer with uniform heating to solve the above-mentioned problems.

[0004] The utility model discloses a compound fertilizer dryer with uniform heating, comprising a base, a drying chamber is arranged on the base, a heating cavity is arranged at the bottom of the drying chamber, a heating device is arranged in the heating cavity, a feeding pipe and a discharging pipe are arranged at two ends of the drying chamber respectively, a carrier gas input pipe and a carrier gas output pipe are arranged on the drying chamber, a conveying shaft is arranged in the drying chamber, a spiral blade is arranged on the conveying shaft, the spiral blade is provided with an inner cavity, a hot gas inlet and a hot gas outlet communicating with the inner cavity are arranged at two ends of the conveying shaft respectively, a rotary joint is arranged between the hot gas inlet and the carrier gas output pipe; a driving mechanism is arranged on the base, and a driving part is arranged between the driving mechanism and the conveying shaft.

[0005] Furthermore, the carrier gas input pipe is arranged at the bottom of the heating chamber, and the top of the heating chamber is connected to the interior of the drying chamber.

[0006] Furthermore, a steam pump is provided on the base, and a second rotary joint is provided between the input pipe of the steam pump and the hot air outlet.

[0007] Furthermore, a steam-water separator is provided on the carrier gas output pipe, and the steam-water separator is provided with a steam outlet pipe connected to the hot gas inlet.

[0008] Furthermore, a cavity is provided in the conveying shaft.

[0009] Furthermore, the driving mechanism is a motor, and the driving part includes a driving gear and a driven gear meshing with each other, the driving gear is arranged on the output shaft of the motor, and the driven gear is sleeved on the conveying shaft.

[0010] Furthermore, a bearing seat cooperating with the conveying shaft is arranged on the base.

[0011] Compared with the prior art, in addition to the heating chamber at the bottom of the dryer which can heat the drying chamber, the spiral blades on the conveying shaft also have a heating function by recycling the steam in the drying chamber, so that the compound fertilizer is heated by contact with the spiral blades during the conveying process, so that the heating process of the compound fertilizer during the conveying period is evenly heated, which can not only improve the drying efficiency and drying effect of the compound fertilizer, but also utilize waste heat for heating, thereby reducing the overall energy consumption of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front cross-sectional view of the utility model;

[0013] Figure 2 It is a left side cross-sectional view of the utility model;

[0014] Figure 3 This is a front cross-sectional view of the conveyor shaft.

[0015] In the figure: 1. base; 2. drying chamber; 3. heating chamber; 4. heating device; 5. feed pipe; 6. discharge pipe; 7. carrier gas input pipe; 8. carrier gas output pipe; 9. conveying shaft; 10. spiral blade; 11. inner cavity; 12. hot air inlet; 13. hot air outlet; 14. rotary joint; 15. driving mechanism; 16. through hole; 17. steam pump; 18. second rotary joint; 19. steam-water separator; 20. steam outlet pipe; 21. cavity; 22. driving gear; 23. driven gear; 24. bearing seat; 25. output pipe. DETAILED DESCRIPTION

[0016] In order to better understand the present invention, Figures 1 to 3 The implementation modes of the present utility model will be explained in detail.

[0017] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all based on Figure 1 The directions of “front, back, left, right, up, and down” are used as the basis.

[0018] See also Figures 1 to 3The utility model is a compound fertilizer dryer with uniform heating, comprising a base 1, a drying chamber 2 is arranged on the base 1, a heating chamber 3 is arranged at the bottom of the drying chamber 2, a heating device 4 is arranged in the heating chamber 3, and an outer wall of the drying chamber 2 is provided with a heat preservation layer to prevent heat loss; a feed pipe 5 is arranged at the top of the left side of the drying chamber 2, and a discharge pipe 6 is arranged at the bottom of the right side; the drying chamber 2 is provided with a carrier gas input pipe 7 and a carrier gas output pipe 8, wherein the carrier gas output pipe 8 is arranged at the top of the drying chamber 2 for collecting the generated steam steam; a conveying shaft 9 is arranged in the drying chamber 2, and the two ends of the conveying shaft 9 are respectively located at the feeding pipe 5 and the discharging pipe 6, and a spiral blade 10 is arranged on the conveying shaft 9, and the spiral blade 10 is provided with an inner cavity 11, and the two ends of the conveying shaft 9 are respectively provided with a hot gas inlet 12 and a hot gas outlet 13 connected to the inner cavity 11, and a rotary joint 14 is arranged between the hot gas inlet 12 and the carrier gas output pipe 8; a driving mechanism 15 is arranged on the base 1, and a driving part is arranged between the driving mechanism 15 and the conveying shaft 9.

[0019] The preferred technical solution in this embodiment is that the carrier gas inlet pipe 7 is arranged at the bottom of the heating chamber 3, and the top of the heating chamber 3 is provided with a through hole 16 connected to the inside of the drying chamber 2, so that the carrier gas passes through the heating chamber 3 before entering the drying chamber 2 and is heated, thereby avoiding large temperature differences in the area near the carrier gas inlet pipe 7 in the drying chamber 2, where the temperature is relatively low, which is not conducive to temperature control in the drying chamber 2.

[0020] The preferred technical solution in this embodiment is that in order to speed up the gas circulation, a steam pump 17 is provided on the base 1, and the steam pump 17 is provided with an input pipe and an output pipe 25, wherein the input pipe of the steam pump 17 is rotatably connected to one end of the hot gas outlet 13 of the conveying shaft 9 by a second rotating joint 18.

[0021] The preferred technical solution in this embodiment is to prevent water accumulation caused by the ambient temperature when the steam circulates in the external pipeline. A steam-water separator 19 is provided on the carrier gas output pipe 8. The steam-water separator 19 is provided with a steam outlet pipe 20. The rotary joint 14 is provided between the steam outlet pipe 20 and the conveying shaft 9. The steam is separated into hot gas and cold water by the steam-water separator 19. The hot gas is conveyed from the steam outlet pipe 20 to one end of the hot gas inlet 12 of the conveying shaft 9.

[0022] The preferred technical solution in this embodiment is as follows Figure 2 As shown in the figure, two conveying shafts 9 are provided to improve the working efficiency of the dryer. At the same time, two groups of components related to the conveying shaft 9 are also provided, that is, two carrier gas output pipes 8, rotary joints 14, and second rotary joints 18 connected to the conveying shaft 9 are provided.

[0023] In the preferred technical solution of the present embodiment, a cavity 21 which is not connected to the hot air inlet 12 and the hot air outlet 13 is provided in the conveying shaft 9 to reduce the weight of the conveying shaft 9 .

[0024] In the preferred technical solution of this embodiment, the driving mechanism 15 is a motor, and the driving part includes a driving gear 22 and a driven gear 23 that mesh with each other. The driving gear 22 is arranged on the output shaft of the motor, and the driven gear 23 is sleeved on the conveying shaft 9.

[0025] The preferred technical solution in this embodiment is that a bearing seat 24 that cooperates with the conveying shaft 9 is provided on the base 1. The bearing seat 24 includes a bearing that is compatible with the conveying shaft 9 to reduce the burden on the drying chamber 2 and ensure smooth transmission of the conveying shaft 9.

[0026] The usage and principle of the utility model are as follows: First, the heating device 4 is started to preheat the heating chamber 3. When the temperature is reached, the compound fertilizer to be dried is injected from the feeding pipe, the conveying shaft 9 is driven to rotate by the driving mechanism 15, and the compound fertilizer is conveyed to one end of the discharge pipe 6 by the spiral blades 10 on the conveying shaft 9. During this period, due to the conduction heating of the heating chamber 3 to the bottom of the drying chamber 2, the compound fertilizer in contact with the bottom of the drying chamber 2 is heated, and the water inside the compound fertilizer evaporates to generate steam. Next, under the influence of the rising steam and the suction of the steam pump 17, the steam in the drying chamber 2 is gathered upward and enters the carrier gas output pipe 8, and passes through the steam-water separator 19 to separate the hot gas and moisture. The hot gas enters the conveying shaft 9 from the steam outlet pipe 20, enters the inner cavity 11 of the spiral blade 10 through the hot gas inlet 12, and is discharged from the hot gas outlet 13. During this period, the spiral blade 10 is heated and heated under the influence of the hot gas circulation. The heated spiral blade 10 contacts the compound fertilizer and heats the compound fertilizer, so that the compound fertilizer is fully and evenly heated in the drying chamber 2, and finally discharged from the discharge pipe 6 to complete the entire drying process.

[0027] The electrical components appearing in this patent are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer or the like.

[0028] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A compound fertilizer dryer with uniform heating, characterized in that: The invention comprises a base (1), wherein a drying chamber (2) is arranged on the base (1), a heating chamber (3) is arranged at the bottom of the drying chamber (2), a heating device (4) is arranged in the heating chamber (3), a feeding pipe (5) and a discharging pipe (6) are arranged at the two ends of the drying chamber (2), a carrier gas input pipe (7) and a carrier gas output pipe (8) are arranged on the drying chamber (2), a conveying shaft (9) is arranged in the drying chamber (2), a spiral blade (10) is arranged on the conveying shaft (9), the spiral blade (10) is provided with an inner cavity (11), a hot gas inlet (12) and a hot gas outlet (13) communicating with the inner cavity (11) are arranged at the two ends of the conveying shaft (9), and a rotary joint (14) is arranged between the hot gas inlet (12) and the carrier gas output pipe (8); a driving mechanism (15) is arranged on the base (1), and a driving unit is arranged between the driving mechanism (15) and the conveying shaft (9).

2. A compound fertilizer dryer with uniform heating as claimed in claim 1, characterized in that: The carrier gas input pipe (7) is arranged at the bottom of the heating chamber (3), and the top of the heating chamber (3) is connected to the interior of the drying chamber (2).

3. A uniformly heated compound fertilizer dryer as claimed in claim 1, characterized in that: A steam pump (17) is arranged on the base (1), and a second rotary joint (18) is arranged between the input pipe of the steam pump (17) and the hot air outlet (13).

4. A uniformly heated compound fertilizer dryer as claimed in claim 1, characterized in that: The carrier gas output pipe (8) is provided with a steam-water separator (19), and the steam-water separator (19) is provided with a steam outlet pipe (20) connected to the hot gas inlet (12).

5. A compound fertilizer dryer with uniform heating as claimed in claim 1, characterized in that: A cavity (21) is provided in the conveying shaft (9).

6. A compound fertilizer dryer with uniform heating as claimed in claim 1, characterized in that: The driving mechanism (15) is a motor, and the driving part comprises a driving gear (22) and a driven gear (23) meshing with each other, the driving gear (22) is arranged on the output shaft of the motor, and the driven gear (23) is sleeved on the conveying shaft (9).

7. A compound fertilizer dryer with uniform heating as claimed in claim 1, characterized in that: The base (1) is provided with a bearing seat (24) which cooperates with the conveying shaft (9).

Images