Roller cooling equipment for organic fertilizer production

Abstract

The invention is suitable for the technical field of organic fertilizer production, and provides a roller cooling device for organic fertilizer production, which mainly comprises a cooling box, an exhaust box cover, a rotating shaft, a lifting roller, a connecting sleeve net, a conical discharge cover, a feeding conical cover, a feed hopper and the like. Two inner gear rings are installed in the cooling box through supporting seats, driving gears are installed at the circle centers of the inner gear rings, and the two driving gears are fixedly connected through the same rotating shaft. The two ends of each lifting roller are connected through a connecting sleeve net and a conical discharging cover, and a pressure relief air inlet pipe is installed in the conical feeding cover. A plurality of lifting rollers are installed, spiral lifting blades are arranged in the rollers, large-particle organic fertilizer is lifted in the cooling process, cooling airflow makes full contact with the large-particle organic fertilizer, and the large-particle organic fertilizer is cooled in an all-dimensional and multi-angle mode. The large-particle organic fertilizer in the lifting roller can jump when making contact with cooling airflow, the cooling effect on the large-particle organic fertilizer is ensured, and the cooling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of organic fertilizer production, and more specifically, it relates to a drum cooling device for organic fertilizer production. Background Art

[0002] In the process of organic fertilizer production, the cooling link is a key step to ensure the quality of large particle organic fertilizers. The existing drum cooling devices generally have the following technical bottlenecks:

[0003] 1. Traditional drum-type or static bed-type cooling devices adopt a one-way air flow design. Due to the self-weight accumulation of large particle organic fertilizers, internal heat retention occurs, forming a "cold shell and hot core" phenomenon. Experimental data shows that when the particle size exceeds 8 mm, the core temperature of traditional devices is 40 - 60 °C higher than the surface layer, and the cooling time is extended by more than 30%.

[0004] 2. There is a lack of an effective separation mechanism for the broken particles (particle size < 3 mm) and powders (particle size < 0.5 mm) generated during the cooling process. Statistics of an organic fertilizer enterprise show that the powder content in the finished product is as high as 12%, which not only reduces the product value, but also poses a risk of dust explosion in the subsequent packaging and transportation links.

[0005] 3. The conventional direct blowing air flow organization causes the low-temperature gas (usually -10 °C - 5 °C) to be discharged without fully contacting the fertilizer. The measured gas utilization rate is less than 45%. To meet the cooling requirements, some enterprises increase the fan power, resulting in an energy consumption increase of 30 - 50%, leading to further increased energy consumption.

[0006] In view of the above technical problems, the present application specifically proposes a drum cooling device for organic fertilizer production. Summary of the Invention

[0007] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a drum cooling device for organic fertilizer production that can ensure cooling efficiency and uniformity, screen out powders, and improve energy utilization rate.

[0008] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0009] The present invention is a drum cooling device for organic fertilizer production, including a bottom tank and a cooling box fixed on the top of the bottom tank. An exhaust box cover is fixed on the top of the cooling box. A support seat is installed inside the cooling box. Inner gear rings are installed at both ends of the support seat. A driving gear is installed at the center of the inner gear ring. The centers of the two driving gears are fixedly penetrated by the same rotating shaft; a number of lifting drums are installed in the annular gap formed between the inner gear ring and the driving gear, and the number of lifting drums is installed at equal intervals in a ring between the inner gear ring and the driving gear.

[0010] Both ends of the lifting drum pass through the internal gear ring and extend to the outside of the internal gear ring. Baffle plates are arranged at both ends of the lifting drum and close to the internal gear ring. A connecting sleeve net fixedly connected to the baffle plates is sleeved on one end of a number of lifting drums located outside the internal gear ring. A conical discharge hood is sleeved on the other end of a number of lifting drums located outside the internal gear ring. A feeding conical hood is sleeved on the end of the connecting sleeve net away from the internal gear ring. A feeding hopper penetrating the exhaust box cover is fixed at the feeding end of the feeding conical hood. A pressure relief inlet pipe coaxial with the feeding conical hood is installed inside the feeding conical hood.

[0011] As a preferred technical solution of the present invention, the discharge end of the conical discharge hood penetrates through the cooling box and extends to the outside of the cooling box. The feeding end of the conical discharge hood contacts the baffle plate. The intake end of the pressure relief inlet pipe sequentially penetrates through the feeding conical hood and the cooling box from inside to outside and extends to the outside of the cooling box.

[0012] As a preferred technical solution of the present invention, the pressure relief inlet pipe includes a straight conduit penetrating through the feeding conical hood and the cooling box. A first conical pressure relief hood is fixed at one end of the straight conduit located inside the feeding conical hood. A second conical pressure relief hood is installed at the end of the first conical pressure relief hood away from the straight conduit. The straight conduit, the first conical pressure relief hood, and the second conical pressure relief hood are sequentially communicated. A buffer plate with air permeable grooves is fixed inside the second conical pressure relief hood.

[0013] As a preferred technical solution of the present invention, the cross section of the exhaust box cover is an isosceles trapezoid. A hot exhaust pipe communicated with the inner cavity of the exhaust box cover is fixed at the top of the exhaust box cover. A fixed frame is installed at the bottom inside the cooling box. A number of parallel and equidistant drainage plates are fixed inside the fixed frame. The drainage plates are inclined along the gas flow direction. The inclination angle of the drainage plates is between 5° and 15°.

[0014] As a preferred technical solution of the present invention, an L-shaped cold air pipe extending to the inside of the cooling box and communicated is penetrated through the bottom of one side of the cooling box. A number of air outlet nozzles communicated with the inner cavity of the L-shaped cold air pipe are fixed on the outer circular surface of the long side of the L-shaped cold air pipe and facing the feeding conical hood. A through hole matched with the conical discharge hood is opened at the top of the other side of the cooling box. A support frame matched with the support seat is installed inside the cooling box.

[0015] As a preferred technical solution of the present invention, one side of the conical discharge hood facing the discharge port is penetrated by one end of a rotating shaft. A second driving wheel is installed at the end of the rotating shaft located outside the conical discharge hood through a universal coupling. A support frame penetrated by the universal coupling and rotatably connected to the universal coupling is installed at the top of one side of the cooling box.

[0016] As a preferred technical solution of the present invention, the lifting drum includes a cylinder body, two gear sleeves for cooperating with the internal tooth ring and the driving gear are fixed on the outer circumferential surface of the cylinder body, a spiral lifting blade is installed on the inner wall of the cylinder body, a ventilation net is installed on the cylinder body through a through window opened thereon, and a plurality of feeding notches are annularly and equidistantly arranged on the outer circumferential surface of one end of the cylinder body located inside the connecting sleeve net.

[0017] As a preferred technical solution of the present invention, the end of the connecting sleeve net far from the feeding conical cover is fixedly connected with a baffle plate, and a plurality of slag discharge holes are opened on the outer circumferential surface of the connecting sleeve net.

[0018] As a preferred technical solution of the present invention, both the conical discharge cover and the feeding conical cover are fixedly connected with the cooling box by bolts.

[0019] As a preferred technical solution of the present invention, a slag discharge rod transversely penetrates through the bottom of the bottom groove, a slag discharge groove communicated with the bottom groove is installed at the bottom of one end of the bottom groove, a spiral slag discharge fan blade that fits with the inner bottom of the bottom groove is installed on the outer circumferential surface of a section of the slag discharge rod located inside the bottom groove, and a first driving wheel is fixed at one end of the slag discharge rod located outside the bottom groove.

[0020] The advantages of the present invention are:

[0021] 1. By installing a plurality of lifting drums in the present invention, spiral lifting blades are arranged inside the drums to lift large particle organic fertilizers during the cooling process, so that the cooling air flow can fully contact the large particle organic fertilizers, and the large particle organic fertilizers are cooled in all directions and at multiple angles. Moreover, while the plurality of lifting drums rotate themselves, they rotate around the driving gear under the action of the driving gear, so that the large particle organic fertilizers inside the lifting drums can jump when contacting the cooling air flow, ensuring the cooling effect on the large particle organic fertilizers and improving the cooling efficiency.

[0022] 2. By arranging a lifting drum with a ventilation net and cooperating with the connecting sleeve net in the present invention, the resistance to the cooling air flow is reduced, so that the cooling air flow can fully contact the organic fertilizer particles for heat exchange, and while the large particle organic fertilizers are rotationally cooled, the organic fertilizers are fully separated from the broken organic fertilizers and powdered organic fertilizers, playing a sieving role while cooling and improving the quality and quality of the organic fertilizer particles.

[0023] 3. Through the ingenious cooperation of components such as the support base, internal gear ring, driving gear, and rotating shaft, the present invention ensures the structural stability and operational reliability of the entire drum cooling equipment. Components such as the conical discharge cover and the feeding conical cover are fixedly connected to the cooling box through bolts, which is convenient for disassembly and cleaning. This not only improves the maintenance convenience of the equipment but also extends the service life of the equipment. The present invention can adjust the number and rotation speed of the lifting drums, as well as the settings of the connecting sleeve net, breathable net, and L-shaped cold air pipe according to actual needs to adapt to the cooling requirements of organic fertilizer particles of different specifications and quantities, thereby expanding the applicable range of this cooling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of a drum cooling equipment for organic fertilizer production according to the present invention.

[0025] Figure 2 It is a schematic structural diagram of another perspective of the present invention.

[0026] Figure 3 It is a schematic cross-sectional structural diagram of the present invention.

[0027] Figure 4 It is a schematic structural diagram of the internal structure of the present invention.

[0028] Figure 5 It is Figure 4 a schematic cross-sectional structural diagram of

[0029] Figure 6 It is a schematic structural diagram of the cooperation of the internal gear ring, driving gear, lifting drum, and baffle plate.

[0030] Figure 7 It is a schematic structural diagram of the cooperation of the internal gear ring, driving gear, rotating shaft, lifting drum, and baffle plate.

[0031] Figure 8 It is a schematic structural diagram of the lifting drum.

[0032] Figure 9 It is a schematic structural diagram of the cooperation of several lifting drums with the internal gear ring, material plate, connecting sleeve net, driving gear, and conical discharge cover.

[0033] Figure 10 It is a schematic structural diagram of the cooperation of several lifting drums with the connecting sleeve net and pressure relief inlet pipe.

[0034] Figure 11 It is a schematic cross-sectional structural diagram of the lifting drum.

[0035] Figure 12 It is a schematic structural diagram of the pressure relief inlet pipe.

[0036] In the attached drawings: 1. Bottom groove; 2. Exhaust box cover; 3. Cooling box; 4. Support seat; 5. Inner gear ring; 6. Driving gear; 7. Rotating shaft;

[0037] 8. Lifting drum; 801. Cylinder body; 802. Gear sleeve; 803. Spiral lifting blade; 804. Ventilation net; 805. Feed chute opening;

[0038] 9. Baffle plate; 10. Connecting sleeve net; 11. Conical discharge hood; 12. Feeding conical hood; 13. Feed hopper; 14. Slag discharge rod; 15. Slag discharge chute; 16. L-shaped cold air pipe; 17. Support frame; 18. Universal coupling; 19. Support bracket; 20. Second driving wheel;

[0039] 21. Pressure relief inlet pipe; 2101. Straight conduit; 2102. First conical pressure relief hood; 2103. Second conical pressure relief hood; 2104. Buffer plate;

[0040] 22. Hot exhaust pipe; 23. Drainage plate. Detailed implementation mode

[0041] The principles and features of the present invention will be described below with reference to the attached drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. In the following paragraphs, the present invention will be described more specifically by way of example with reference to the attached drawings. It should be noted that the attached drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0042] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0044] Example 1. Please refer to Figures 1 - 12 The structural schematic diagram. The present invention provides the following technical solutions:

[0045] Specifically, it refers to a drum cooling device for organic fertilizer production, including a bottom trough 1 and a cooling box 3 fixed on the top of the bottom trough 1. An exhaust box cover 2 is fixed on the top of the cooling box 3. The cross-section of the exhaust box cover 2 is an isosceles trapezoid. A hot exhaust pipe 22 communicating with the inner cavity of the exhaust box cover 2 is fixed on the top of the exhaust box cover 2. The exhaust end of the hot exhaust pipe 22 is connected with a ventilation device and a filtering device, which can extract the hot air inside the cooling box 3 and the organic fertilizer powder mixed in the air, and intercept it through the filtering device. A support seat 4 is installed inside the cooling box 3. Inner gear rings 5 are installed at both ends of the support seat 4. A driving gear 6 is installed at the center of the inner gear ring 5. The same rotating shaft 7 is fixedly penetrated through the centers of the two driving gears 6; A number of lifting drums 8 are installed in the annular space formed between the inner gear ring 5 and the driving gear 6 (by the differential rotation of the lifting drums in a circular array (the internal and external tooth speed ratio is 1:1.5), a spiral upward air flow is generated, so that the particles obtain a radial movement speed of 0.3-0.8 m / s, realizing full-dimensional heat exchange). The lifting drums 8 separately lift the piled organic fertilizer particles, and perform heat exchange with the external cooling air flow through the lifting drums 8 to improve the cooling efficiency of the organic fertilizer particles. A number of lifting drums 8 are installed at equal intervals in a ring between the inner gear ring 5 and the driving gear 6. Through the rotation design of the lifting drums 8, the impact of the cooling air flow on the large-particle organic fertilizer inside the lifting drums 8 is increased, improving the cooling effect.

[0046] Both ends of the lifting drum 8 pass through the internal gear ring 5 and extend to the outside of the internal gear ring 5. Material retaining plates 9 are arranged at both ends of the lifting drum 8 and close to the internal gear ring 5. The lifting drum 8 passes through the material retaining plates 9 and is rotatably connected to the material retaining plates 9. A same connecting sleeve net 10 fixedly connected to the material retaining plates 9 is sleeved on one end of a number of lifting drums 8 located outside the internal gear ring 5. One end of the connecting sleeve net 10 away from the feeding conical cover 12 is fixedly connected to the material retaining plate 9. One end of the connecting sleeve net 10 extends into the feeding conical cover 12 and is rotatably connected to the feeding conical cover 12. A number of slag discharge holes are formed in the outer circumferential surface of the connecting sleeve net 10, and the aperture of the slag discharge holes is 3 mm. A same conical discharge cover 11 is sleeved on the other end of a number of lifting drums 8 located outside the internal gear ring 5. One end of the conical discharge cover 11 close to the material retaining plate 9 contacts but is not fixed to the material retaining plate 9. The material retaining plate 9 can rotate. The feeding conical cover 12 is sleeved on the end of the connecting sleeve net 10 away from the internal gear ring 5. A feed hopper 13 extending outside the cooling box 3 is fixed at the feeding end of the feeding conical cover 12. A pressure relief intake pipe 21 coaxial with the feeding conical cover 12 is installed in the feeding conical cover 12. The discharging end of the conical discharge cover 11 passes through the cooling box 3 and extends to the outside of the cooling box 3. The feeding end of the conical discharge cover 11 contacts the material retaining plate 9. The intake end of the pressure relief intake pipe 21 sequentially passes through the feeding conical cover 12 and the cooling box 3 from inside to outside and extends to the outside of the cooling box 3. The discharging end of the pressure relief intake pipe 21 directly extends into the conical discharge cover 11. The input cold air can directly contact the organic fertilizer to be cooled first, further improving the cooling effect on the organic fertilizer and making full use of the cold air flow. The conical discharge cover 11 and the feeding conical cover 12 are both fixedly connected to the cooling box 3 by bolts. The material retaining plate 9 can prevent the fertilizer from passing through the internal gear ring 5 and entering the cooling box 3. Under the blocking of the material retaining plate 9, the fertilizer can only enter the lifting drum 8 in the feeding conical cover 12, and then enter the conical discharge cover 11 and be discharged.

[0047] One side of the bottom of the cooling box 3 is penetrated with an L-shaped cold air pipe 16 extending into and communicating with the inside of the cooling box 3. A number of air outlet nozzles communicated with the inner cavity of the L-shaped cold air pipe 16 are fixed on the outer circumferential surface of the long side of the L-shaped cold air pipe 16 facing the feeding conical cover 12. A through hole matching the conical discharge cover 11 is formed in the top of the other side of the cooling box 3. A support frame 17 matching the support seat 4 is installed inside the cooling box 3. The L-shaped cold air pipe 16 and the pressure relief intake pipe 21 are connected to a cooling gas input device to provide cooling gas for the cooling of the organic fertilizer.

[0048] The conical discharge cover 11 is penetrated by one end of the rotating shaft 7. One end of the rotating shaft 7 located outside the conical discharge cover 11 is installed with a second driving wheel 20 through a universal coupling 18. The second driving wheel 20 is in transmission connection with an external driving device. One side of the top of the cooling box 3 is installed with a support frame 19 penetrated by the universal coupling 18 and rotatably connected to the universal coupling 18. External power is transmitted to the rotating shaft 7 through the second driving wheel 20 and the universal coupling 18. The rotation of the rotating shaft 7 drives a plurality of lifting drums 8 to rotate inside the internal gear ring 5.

[0049] The above various structures cooperate with each other to form the drum cooling device. All the cooling structures are installed in the cooling box 3, making the cooling device have a compact structure and a small floor area.

[0050] During operation, the organic fertilizer particles are put into the feeding conical cover 12 through the feeding hopper 13, and then the organic fertilizer particles enter the lifting drum 8. By driving the rotating shaft 7 to rotate, the driving gear 6 and the internal gear ring 5 are driven to rotate synchronously, and then the lifting drum 8 is driven to rotate. The spiral lifting blades 803 (although not explicitly mentioned in this embodiment, but can be inferred from the subsequent embodiments) in the lifting drum 8 lift the organic fertilizer particles in the feeding conical cover 12, so that the piled-up organic fertilizer is dispersed and fully contacts the cold air inside the cooling box 3 (the organic fertilizer particles in the feeding conical cover 12 first contact the cooling air flow ejected from the pressure relief inlet pipe 21, and then the cooling air flow diffuses to the entire cooling box 3 through the slag discharge holes on the connecting sleeve net 10. Then, the organic fertilizer after preliminary cooling further exchanges heat with the cooling air flow in the cooling box 3 through the lifting drum 8. The lifting drum 8 spreads the piled-up organic fertilizer particles, enabling full heat exchange with the cooling air flow), achieving the cooling effect on the organic fertilizer particles.

[0051] Embodiment 2, on the basis of the specific Embodiment 1, the difference in this embodiment is that:

[0052] Such as Figures 5 - 11As shown, on the basis of Embodiment 1, in this embodiment, the lifting drum 8 is designed in detail. The lifting drum 8 is equivalent to a heat exchange component in this application, and the detailed design of the lifting drum 8 improves the cooling efficiency. The lifting drum 8 includes a cylinder body 801, a gear sleeve 802, a spiral lifting blade 803, a ventilation net 804, and a feed chute 805. The setting of the ventilation net 804 ensures air permeability while effectively filtering powder and crushed organic fertilizers (the aperture of the ventilation net 804 is 2 mm), and the design of the feed chute 805 facilitates the uniform entry of organic fertilizers. Two gear sleeves 802 are fixed on the outer cylindrical surface of the cylinder body 801, which are respectively engaged with the internal gear ring 5 and the driving gear 6. The spiral lifting blade 803 is fixedly installed on the inner wall of the cylinder body 801. The spiral lifting blade 803 is welded or fixedly installed on the inner wall of the cylinder body 801 by bolts, and the spiral lifting blade 803 is coaxial with the cylinder body 801. When the cylinder body 801 rotates, it can drive the spiral lifting blade 803 to rotate, which is used to lift and sprinkle organic fertilizer particles. A through window is opened on the cylinder body 801 and the ventilation net 804 is installed. The ventilation net 804 enables the external cooling air flow to enter the cylinder body 801 to exchange heat with the internal organic fertilizer particles, and the hot air can be discharged from the cylinder body 801 through the ventilation net 804. It can also be used to filter crushed and powdered organic fertilizers. A number of feed chutes 805 are annularly and equidistantly opened on the outer cylindrical surface of one end of the cylinder body 801 located inside the connecting sleeve net 10, which facilitates the entry of organic fertilizers.

[0053] With such a design, when the lifting drum 8 rotates, the spiral lifting blade 803 lifts the organic fertilizer particles from the bottom of the cylinder body 801 to the top and sprinkles them out. After sufficient contact with the cooling air flow in the cooling box 3, the cooling effect of the organic fertilizer is achieved. The organic fertilizer particles enter the cylinder body 801 through the feed chute 805 and are continuously cooled under the action of the spiral lifting blade 803. The cooled organic fertilizer particles are discharged from the conical discharge cover 11, while the crushed or powdered organic fertilizers are discharged through the slag discharge holes on the connecting sleeve net 10 and the ventilation net 804 and fall into the cooling box 3.

[0054] Embodiment 3. On the basis of the specific Embodiment 2, the difference in this embodiment is that:

[0055] As Figures 1 - 3As shown in the figure, a slag discharge rod 14 runs horizontally through the bottom of the bottom tank 1. At one end of the bottom of the bottom tank 1, a slag discharge tank 15 communicating with the bottom tank 1 is installed. On the outer circumferential surface of a section of the slag discharge rod 14 located inside the bottom tank 1, spiral slag discharge fan blades that fit the inner bottom of the bottom tank 1 are installed. At one end of the slag discharge rod 14 located outside the bottom tank 1, a first drive wheel is fixed, and the first drive wheel is in transmission connection with an external drive device. A slag discharge rod 14 runs horizontally through the bottom of the bottom tank 1, and a slag discharge tank 15 is installed at the bottom of one end of the bottom tank 1. On the outer circumferential surface of a section of the slag discharge rod 14 located inside the bottom tank 1, spiral slag discharge fan blades are installed to assist in discharging the crushed and powdered organic fertilizer in the bottom tank 1. At one end of the slag discharge rod 14 located outside the bottom tank 1, a first drive wheel is fixed to drive the slag discharge rod 14 to rotate. Through the design of the above structure, the slag discharge capacity of the bottom tank 1 is enhanced, the accumulation of crushed and powdered organic fertilizers is avoided, the cleanliness and service life of the entire device are improved, the amount of broken organic fertilizer particles and powder content in the output are reduced, and the quality of the organic fertilizer particles after cooling is further improved.

[0056] A fixed frame is installed at the inner bottom of the cooling box 3. Inside the fixed frame, a number of parallel and equally spaced drainage plates 23 are fixed. The drainage plates 23 are arranged obliquely along the gas flow direction, and the inclination angle of the drainage plates 23 is between 5° and 15°. Specifically, the fixed frame is welded to the inner bottom of the cooling box 3, and the drainage plates 23 are embedded in the fixed frame in a detachable manner. The arrangement of the drainage plates 23 enables the sieved organic fertilizer to be deposited at the bottom of the bottom tank 1, reduces the influence of the cooling air flow blown by the L-shaped cold air pipe 16 on the inside of the bottom tank 1, and is conducive to the aggregation of crushed and powdered organic fertilizer at the bottom of the bottom tank 1.

[0057] With such a design, when the crushed or powdered organic fertilizer passes through the slag discharge holes and the breathable mesh 804 on the connecting sleeve mesh 10 and falls into the cooling box 3 and gradually accumulates at the inner bottom of the bottom tank 1, the first drive wheel is started to drive the slag discharge rod 14 to rotate. The spiral slag discharge fan blades push the deposited organic fertilizer in the bottom tank 1 towards the slag discharge tank 15 and discharge it, ensuring the cleanliness of the bottom tank 1.

[0058] Embodiment 4, on the basis of the specific Embodiment 3, the difference in this embodiment is that:

[0059] Such as Figure 3 、 Figure 5 、 Figure 10 、 Figure 12As shown in the figure, the pressure relief intake pipe 21 includes a straight conduit 2101 that penetrates through the feeding conical cover 12 and the cooling box 3. One end of the straight conduit 2101 located inside the feeding conical cover 12 is fixed with a first conical pressure relief cover 2102. A second conical pressure relief cover 2103 is installed at one end of the first conical pressure relief cover 2102 away from the straight conduit 2101. Support ribs that fit the inner wall of the feeding conical cover 12 are fixed on the outer circumferential surface of the second conical pressure relief cover 2103. A feeding gap for the organic fertilizer particles to fall is formed between the outer circumferential surface of the second conical pressure relief cover 2103 and the inner surface of the feeding conical cover 12. The straight conduit 2101, the first conical pressure relief cover 2102, and the second conical pressure relief cover 2103 are communicated in sequence. A buffer plate 2104 with air permeable grooves is fixed inside the second conical pressure relief cover 2103. The buffer plate 2104 with air permeable grooves further blocks the input cooling air flow, causing the air flow to disperse in all directions.

[0060] The straight conduit 2101 in the pressure relief intake pipe 21 is connected to an external cooling gas input device. In order to improve the cooling effect on the organic fertilizer, usually some cooling air with a relatively high air flow rate and a relatively low temperature is introduced. The air flow introduced in this way has a relatively large pressure and a relatively high flow rate. The cooling air flow has a relatively large impact on the organic fertilizer, and the high-flow air flow after input will quickly flow out of the cooling box 3, resulting in a reduced utilization efficiency and being unfavorable for the cooling of the organic fertilizer. Through the multi-stage expansion pressure relief of the first conical pressure relief cover 2102 and the second conical pressure relief cover 2103, the pressure and flow rate of the cooling gas are reduced (heat inside the cooling box 3 will be absorbed during the pressure relief process, which helps to absorb the heat in the organic fertilizer). The cooling air flow can fully contact the organic fertilizer to be cooled, improving the cooling effect on the organic fertilizer.

[0061] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements, or modifications made based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all covered by the protection scope of the present invention.

Claims

1. A drum cooling device for organic fertilizer production, comprising a bottom tank (1) and a cooling box (3) fixed on the top of the bottom tank (1). An exhaust box cover (2) is fixed on the top of the cooling box (3). It is characterized in that: A support seat (4) is installed inside the cooling box (3). Inner gear rings (5) are installed at both ends of the support seat (4). A driving gear (6) is installed at the center of the inner gear ring (5). A same rotating shaft (7) fixedly penetrates through the centers of the two driving gears (6). A number of lifting drums (8) are installed in the annular gap formed between the inner gear ring (5) and the driving gear (6); Both ends of the lifting drum (8) pass through the inner gear ring (5) and extend to the outside of the inner gear ring (5). Material retaining plates (9) are arranged at both ends of the lifting drum (8) and close to the inner gear ring (5). A connecting sleeve net (10) fixedly connected to the material retaining plate (9) is sleeved on one end of a number of lifting drums (8) located outside the inner gear ring (5). A same conical discharge hood (11) covers the other end of a number of lifting drums (8) located outside the inner gear ring (5); A feeding conical hood (12) is sleeved on one end of the connecting sleeve net (10) away from the inner gear ring (5). A feeding hopper (13) penetrating through the exhaust box cover (2) is fixed at the feeding end of the feeding conical hood (12). A pressure relief inlet pipe (21) coaxial with the feeding conical hood (12) is installed inside the feeding conical hood (12); The lifting drum (8) comprises a cylinder body (801). Two gear sleeves (802) cooperating with the inner gear ring (5) and the driving gear (6) are fixed on the outer circular surface of the cylinder body (801). A spiral lifting blade (803) is installed on the inner wall of the cylinder body (801). A breathable net (804) is installed on the cylinder body (801) through a through window opened thereon. A number of feeding slots (805) are opened on the outer circular surface of one end of the cylinder body (801) located inside the connecting sleeve net (10).

2. The drum cooling equipment for organic fertilizer production according to claim 1, characterized in that, The discharge end of the conical discharge hood (11) penetrates through the cooling box (3) and extends to the outside of the cooling box (3). The feeding end of the conical discharge hood (11) contacts the material retaining plate (9). The inlet end of the pressure relief inlet pipe (21) sequentially penetrates through the feeding conical hood (12) and the cooling box (3) from inside to outside and extends to the outside of the cooling box (3); Among them, a number of lifting drums (8) are installed annularly and equidistantly between the inner gear ring (5) and the driving gear (6).

3. The drum cooling equipment for organic fertilizer production according to claim 2, characterized in that, The pressure relief inlet pipe (21) comprises a straight conduit (2101) penetrating through the feeding conical hood (12) and the cooling box (3). A first conical pressure relief hood (2102) is fixed at one end of the straight conduit (2101) located inside the feeding conical hood (12). A second conical pressure relief hood (2103) is installed at one end of the first conical pressure relief hood (2102) away from the straight conduit (2101). The straight conduit (2101), the first conical pressure relief hood (2102), and the second conical pressure relief hood (2103) are sequentially communicated. A buffer plate (2104) with breathable slots is fixed inside the second conical pressure relief hood (2103).

4. An organic fertilizer production drum cooling device according to claim 1, characterized in that, The cross-section of the exhaust box cover (2) is an isosceles trapezoid. A hot exhaust pipe (22) communicating with the inner cavity of the exhaust box cover (2) is fixed at the top of the exhaust box cover (2). A fixed frame is installed at the bottom inside the cooling box (3), and a number of drainage plates (23) arranged in parallel and equidistantly are fixed inside the fixed frame; Among them, the drainage plate (23) is arranged obliquely along the gas flow direction, and the inclination angle of the drainage plate (23) is between 5° and 15°.

5. A drum cooling device for organic fertilizer production according to claim 1, characterized in that, One side of the bottom of the cooling box (3) is penetrated by an L-shaped cold air pipe (16) extending into and communicating with the inside of the cooling box (3). A number of air outlet nozzles communicating with the inner cavity of the L-shaped cold air pipe (16) are fixed on the long side of the L-shaped cold air pipe (16) and facing the outer circular surface of the feeding conical cover (12). A through hole matching with the conical discharge cover (11) is opened at the top of the other side of the cooling box (3). A support frame (17) matching with the support seat (4) is installed inside the cooling box (3).

6. The drum cooling equipment for organic fertilizer production according to claim 1, wherein, One side of the conical discharge cover (11) facing the discharge port is penetrated by one end of a rotating shaft (7). A second driving wheel (20) is installed at the end of the rotating shaft (7) outside the conical discharge cover (11) through a universal coupling (18). A support frame (19) penetrated by the universal coupling (18) and rotatably connected to the universal coupling (18) is installed at the top of one side of the cooling box (3).

7. The drum cooling equipment for organic fertilizer production according to claim 1, characterized in that, One end of the connecting sleeve net (10) far from the feeding conical cover (12) is fixedly connected to the baffle plate (9). A number of slag discharge holes are opened on the outer circular surface of the connecting sleeve net (10).

8. A drum cooling device for organic fertilizer production according to claim 1, characterized in that, The conical discharge cover (11) and the feeding conical cover (12) are both fixedly connected to the cooling box (3) by bolts.

9. The drum cooling equipment for organic fertilizer production according to claim 1, characterized in that, A slag discharge rod (14) transversely penetrates the bottom of the bottom groove (1). A slag discharge groove (15) communicating with the bottom groove (1) is installed at the bottom of one end of the bottom groove (1). A spiral slag discharge fan blade fitting with the inner bottom of the bottom groove (1) is installed on the outer circular surface of a section of the slag discharge rod (14) located inside the bottom groove (1). A first driving wheel is fixed at the end of the slag discharge rod (14) located outside the bottom groove (1).

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