Cooler for feed granulation section

Abstract

The cooler comprises a tank body, the top and the bottom of the tank body are provided with a feeding port and a discharging port respectively, an exhaust pipe and an air inlet pipe are further arranged on a top cover and a bottom cover of the tank body respectively, and an air inlet pipe is arranged in the tank body. A first cooling section, a second cooling section and a third cooling section are sequentially arranged in the direction from the feeding port to the discharging port. The utility model relates to the technical field of feed processing equipment, adopts the design of staged cooling, and each cooling section is specially designed according to different cooling requirements, so that the cooling efficiency and effect are obviously improved. Through the three-section type cooling design, the cooler not only improves the cooling efficiency, but also improves the feed quality due to a more uniform cooling effect. Meanwhile, due to optimization of the cooling process, the continuous performance and stability of the whole production are improved, and feed loss and retreatment requirements caused by poor cooling are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of feed processing equipment, in particular to a cooler for the feed pelletizing section. Background Art

[0002] In the process of feed production, the pelletizing section is a crucial link. If not cooled, during subsequent use and storage, it is extremely easy to get moldy and hairy. The main reason for this is that the pellet feed coming out of the pellet feed machine has not been sufficiently cooled. Therefore, the cooling step is crucial for ensuring the quality of the feed. Traditional feed coolers usually use simple barrier parts to slow down the falling speed of the feed, hoping to improve the cooling effect by extending the residence time of the feed in the cooler. However, this design has many deficiencies and fails to achieve the ideal cooling effect.

[0003] First of all, the method of only slowing down the falling speed through physical barriers fails to effectively increase the contact area between the feed and the cooling air. The feed pellets often still maintain their original agglomerated state during the falling process. The pellets in the central part cannot contact enough cooling air, resulting in ineffective heat dissipation and uneven cooling.

[0004] Secondly, most of the existing coolers do not consider the flow mode and flow path of the cooling air and the feed, resulting in low heat exchange efficiency. The cooling air often flows in a single direction and fails to form an effective convection, limiting the heat exchange efficiency and resulting in an unsatisfactory cooling effect.

[0005] Therefore, in view of these deficiencies of the existing technology, the design of a new type of cooler for the feed pelletizing section is particularly necessary. This kind of cooler not only needs to solve the problem of cooling efficiency during the falling process of the feed, but also needs to improve the uniformity and adaptability of feed cooling, ensuring the feed quality while improving the production efficiency. Content of the Utility Model

[0006] In view of the deficiencies of the existing technology, the utility model provides a cooler for the feed pelletizing section, which solves the problems of uneven cooling and unsatisfactory cooling effect of the existing feed cooler.

[0007] To achieve the above object, the utility model is realized through the following technical solutions: A cooler for the feed pelletizing section includes a tank body. An inlet and an outlet are respectively arranged at the top and bottom of the tank body. An exhaust pipe and an inlet pipe are respectively arranged on the top cover and the bottom cover of the tank body. Inside the tank body, a first cooling section, a second cooling section, and a third cooling section are sequentially arranged from the direction of the inlet to the outlet;

[0008] An end plate is arranged in the first cooling section. A gap for the material to fall and the gas to move upward is formed between the end of the end plate and the inner wall surface of the tank body;

[0009] A guiding disk is arranged in the second cooling section. The guiding disk includes a hollow annular disk. A break is formed on the annular surface of the annular disk. The annular disk forms a feeding section and a discharging section at the break. The feeding section is arranged below the notch.

[0010] A receiving funnel is arranged in the third cooling section. The central hole of the receiving funnel is located above the discharging port.

[0011] Preferably, a first inclined surface and a second inclined surface are formed on the annular disk, so that the material can fall from the discharging section and the central opening of the annular disk along the first inclined surface and the second inclined surface.

[0012] Preferably, the first inclined surface includes a spiral inclined surface formed on the annular disk along the direction from the feeding section to the discharging section; the feeding section and the discharging section are arranged vertically staggered in the front view projection.

[0013] Preferably, the second inclined surface includes an inclined surface formed by inclining downward from the outer edge to the inner edge of the annular disk.

[0014] Preferably, a plurality of slots penetrating up and down are formed in the annular disk.

[0015] Preferably, the end plate includes a plate member. The inner side of the plate member is hollow and is fixed with a first screen.

[0016] Preferably, an included angle α is formed between the end plate and the inner wall of the tank body, and 90° > α > 50°.

[0017] Preferably, there are a plurality of the end plates, and they are arranged staggeredly from top to bottom. A circulation channel that is repeatedly bent is formed between adjacent two end plates through each notch.

[0018] Preferably, a bottom groove is fixed at the bottom of the lowermost end plate. A dust receiving cavity is formed between the bottom groove and the end plate. One end of a dust suction pipe communicated with the dust receiving cavity is communicated with the bottom groove. The other end of the dust suction pipe extends out of the tank body and is connected with a dust suction machine.

[0019] Preferably, the central hole of the receiving funnel is connected with the discharging port through a connecting cylinder;

[0020] A screen is arranged on the surface of the receiving funnel. A clamping cavity is formed between the receiving funnel and the bottom of the tank body. A slag discharging pipe communicated with the clamping cavity is arranged at the bottom of the tank body.

[0021] The beneficial effects of the present utility model: By using a cooler for a feed granulation section provided by the present utility model, compared with the prior art, a design of staged cooling is adopted, and each cooling section is specially designed for different cooling requirements, thereby significantly improving the cooling efficiency and effect.

[0022] In the first cooling section, by reciprocating and turning back the feed on the end plate, the transformation from columnar to evenly spread state is achieved, significantly increasing the contact surface area between the feed and the cooling air. This design enables the feed particles to come into contact with the cooling air more fully, greatly improving the heat exchange efficiency and accelerating the cooling process.

[0023] In the second cooling section, the feed rolls on the annular disk and rolls down along the spiral inclined plane. This design not only increases the contact time between the feed and the cooling air, but also further breaks up the feed agglomeration through rolling and spiral descent, making the cooling more uniform. At the same time, this dynamic contact method also promotes more effective heat exchange.

[0024] In the third cooling section, by setting up a receiving funnel and a clamping cavity structure, the cooling air can pass through the sieve more concentratedly and evenly and come into direct contact with the falling feed. This design ensures that even in the final stage of the cooling process, the feed can still be fully cooled, further improving the cooling uniformity and efficiency.

[0025] Through the three-stage cooling design, the cooler of the present invention not only improves the cooling efficiency, but also enhances the quality of the feed due to the more uniform cooling effect. At the same time, due to the optimization of the cooling process, the continuity and stability of the entire production are improved, reducing the feed loss and the need for reprocessing caused by poor cooling.

[0026] In summary, the cooler for the feed pelletizing section significantly improves the cooling efficiency and effect through a multi-stage cooling design, ensures the quality of the feed product, and at the same time improves the production efficiency and the applicability of the equipment, providing an efficient solution for the feed pelletizing section. Brief Description of the Drawings

[0027] Figure 1 It is a three-dimensional sectional view of the cooler of the present utility model;

[0028] Figure 2 It is the front view of the tank body of the present utility model;

[0029] Figure 3 It is the top view of the end plate of the present utility model;

[0030] Figure 4 It is the schematic diagram of the connection structure between the bottom groove and the end plate of the present utility model;

[0031] Figure 5 It is the top view of the guiding disk of the present utility model;

[0032] Figure 6 It is the three-dimensional structure schematic diagram of the guiding disk of the present utility model;

[0033] Figure 7It is a schematic diagram of the receiving funnel structure of the utility model.

[0034] Description of reference numerals in the figures

[0035] 1. Exhaust pipe, 2. Feed inlet, 3. Tank body, 4. End plate, 41. First screen, 5. Bottom groove, 6. Guide plate, 61. Annular plate, 62. Feeding section, 63. Discharging section, 64. Spiral ramp, 65. Inclined surface, 66. Slotting, 67. Fracture, 7. Discharging port, 8. Receiving funnel, 9. Air inlet pipe, 10. Circulation channel, 11. Clamping cavity, 12. Connecting tube, 13. Dust collecting cavity, 14. Dust suction pipe, 15. Screen, 16. Slag discharge pipe, 17. Notch. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. As long as the effect of the utility model can be exerted, various changes can be made to the implementation scheme.

[0037] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0038] Reference Figure 1-7 A cooler for a feed pelletizing stage according to the present embodiment is described.

[0039] It includes a tank body 3, and the top and bottom of the tank body 3 are respectively provided with an inlet 2 and a discharge port 7. After the feed particles are prepared and formed, they are transported to the inlet 2 of the cooler through a transmission device, such as a conveyor belt, and enter the tank body 3. The feed falls freely from top to bottom and flows out from the discharge port 7. An exhaust pipe 1 and an air inlet pipe 9 are also respectively provided on the top cover and the bottom cover of the tank body 3. The air inlet pipe 9 is connected to the fan, and the cooling air moves upward from the bottom of the tank body, contacts the falling feed particles, and takes away the heat generated by the feed through heat exchange. The hot air after heat exchange is discharged through the exhaust pipe 1. This process not only reduces the temperature of the feed, but also helps to remove moisture and volatile substances, thereby improving the storage stability of the feed.

[0040] The inside of the tank body 3 is further refined to achieve a more accurate and efficient cooling process. This design divides the cooling process into multiple stages, that is, the first cooling section, the second cooling section and the third cooling section are sequentially arranged from the feed inlet 2 to the discharge port 7. During the free fall of the feed in the tank body 3, the feed passes through the first cooling section, the second cooling section and the third cooling section respectively, and is cooled to different degrees.

[0041] The first cooling section is located in the part of the tank body 3 closest to the feed inlet 2. When the feed pellets enter the tank body 3 from the feed inlet 2, they first pass through this area. The main function of this section is to rapidly reduce the initial temperature of the feed. After the feed pellets complete the preliminary cooling in the first cooling section, they continue to fall into the second cooling section. The design purpose of this section is to further reduce the temperature of the feed. After the feed pellets experience the first two cooling sections, they reach the third cooling section, which is the last cooling section of the feed in the tank body 3 to achieve the best storage conditions.

[0042] An end plate 4 is arranged in the first cooling section. A gap 17 for the material to fall and the gas to move upward is formed between the end of the end plate 4 and the inner wall surface of the tank body 3, and the material is feed. When the feed falls, it lands on the end plate 4 and changes from a columnar shape during falling to a uniformly spread shape, increasing the surface area of the feed during falling, increasing the contact area between the feed and the cooling air, so as to improve the heat exchange effect and the cooling efficiency.

[0043] The end plate 4 includes a plate member, the inside of the plate member is hollow, and a first screen 41 is fixed. The design of the screen 41 enables the cooling air to pass through the mesh holes of the first screen 41 and move upward, enabling the cooling air to contact the feed to the greatest extent and improving the heat exchange effect.

[0044] The end plate 4 is inclined downward and forms an angle α with the inner wall of the tank body 3, 90° > α > 50°, preferably 75°. By designing the end plate 4 to be inclined, it is convenient for the feed to fall.

[0045] In an embodiment, the number of end plates 4 is multiple, and they are arranged in a staggered manner from top to bottom. A repeatedly bent flow channel 10 is formed between adjacent two end plates 4 through each gap 17. Increasing the number of end plates 4 and forming a staggered arrangement can increase the residence time of the feed in the first cooling section, thereby increasing the heat exchange time and further improving the heat exchange effect.

[0046] A bottom groove 5 is fixed at the bottom of the lowermost end plate 4. A dust collection chamber 13 is formed between the bottom groove 5 and the end plate 4. One end of a dust suction pipe 14 communicating with the dust collection chamber 13 is connected to the bottom groove 5. The other end of the dust suction pipe 14 extends out of the tank body 3 and is connected to a dust suction machine. During the cooling process of the feed sliding back and forth on multiple end plates 4, the surface of the feed will dry first, and the dust on the surface will fall off. Part of the dust will enter the exhaust pipe 1 with the air flow and be discharged, and the other part will fall into the dust collection chamber 13. When the dust suction machine is turned on, the dust collected in the dust collection chamber 13 can be sucked.

[0047] A guiding disk 6 is arranged in the second cooling section. The guiding disk 6 includes a hollow annular disk 61. A break 67 is formed on the annular surface of the annular disk 61. The annular disk 61 forms a feeding section 62 and a discharging section 63 at the break 67. The feeding section 63 is arranged below the notch 17. The feed falling out from the lowermost end plate 4 will fall to the feeding end 63. The feed rolls on the annular disk 61 and finally falls to the third cooling section through the discharging end 63 and the central opening of the annular disk 61.

[0048] A first inclined surface and a second inclined surface are formed on the annular disk 61, so that the material can fall along the first inclined surface and the second inclined surface through the discharging section 63 and the central opening of the annular disk 61. It should be noted that the cooling air moves upward through the central opening and the notch 17. Specifically in implementation: The first inclined surface includes a spiral inclined surface 64 formed on the annular disk 61 along the direction from the feeding section 62 to the discharging section 63; the feeding section 62 and the discharging section 63 are arranged staggered up and down in the main view projection. The annular disk 61 has a spiral inclined surface 64 spirally from top to bottom, so that the feed can roll down along the spiral inclined surface 64 and contact the rising cooling air for heat exchange during the rolling process. The second inclined surface includes an inclined surface 65 formed by inclining downward from the outer edge to the inner edge of the annular disk 61. During the process of the feed spirally rotating and rolling down, the feed also moves and falls to the central opening in the center through the second inclined surface, and contacts the rising cooling air for heat exchange when falling.

[0049] In order to prevent the feed from concentrating, in this embodiment, a plurality of through slots 66 penetrating up and down are also opened on the annular disk 61. The through slots 66 are preferably strip-shaped, which can enable the feed to directly fall through the through slots 66 during the rolling process on the annular disk 61 and enable the cooling air to rise through the through slots 66.

[0050] A receiving funnel 8 is arranged in the third cooling section. The central hole of the receiving funnel 8 is located above the discharging port 7. The central hole of the receiving funnel 8 is flange-connected to the discharging port 7 through a connecting tube 12. The feed falling into the third cooling section is collected by the receiving funnel 8 and centrally conveyed to the discharging port 7 through the connecting tube 12.

[0051] The conical funnel body of the receiving funnel 8 is hollow, and a screen 15 is arranged in the hollow part, so that the screen 15 covers the surface of the receiving funnel 8. A clamping cavity 11 is formed between the receiving funnel 8 and the bottom of the tank body 3. An air inlet pipe 9 is connected to the clamping cavity 11. The cooling air blown into by the air inlet pipe 9 enters the clamping cavity 11 and then moves upward through the mesh holes of the screen 15; at this time, when the feed moves along the inner wall surface of the receiving funnel 8 towards the discharging port 7 at the bottom, the cooling air passing through the screen 15 directly contacts the falling feed to form heat exchange. A slag discharge pipe 16 communicated with the clamping cavity 11 is arranged at the bottom of the tank body 3. A valve is installed on the slag discharge pipe 16, and the impurities sinking into the clamping cavity 11 are discharged by manually opening and closing.

[0052] Working principle: The prepared and formed feed pellets enter the tank body 3 through the feed inlet 2 and flow out through the discharge outlet 7 by freely falling from top to bottom. The cooling air enters through the air inlet pipe 9 and moves upward from bottom to top and is discharged through the exhaust pipe 1.

[0053] During the process of freely falling from top to bottom, the feed first falls onto the end plate 4. The feed reciprocates and folds back, changing from a columnar shape during feeding to a uniformly spread shape on each end plate 4, increasing the surface area of the feed during feeding; at the same time, the cooling air can pass through the mesh holes of the first screen 41 and move upward, increasing the contact area between the feed and the cooling air, so as to improve the heat exchange effect.

[0054] The feed falling out from the lowermost end plate 4 will fall into the feed inlet end 63 of the annular disk 61. The feed rolls on the annular disk 61 and rolls downward along the spiral inclined surface 64 and is discharged through the discharge section 63, and exchanges heat with the rising cooling air during the rolling process. At the same time, during the process of rotating and rolling downward in a spiral shape, the feed also moves and falls through the central opening towards the center through the second inclined surface, and exchanges heat with the rising cooling air during the falling process.

[0055] The feed falling into the third cooling section is collected by the receiving funnel 8 and centrally conveyed to the discharge outlet 7 through the connecting tube 12. The cooling air blown into by the air inlet pipe 9 enters the clamping cavity 11, then moves upward through the mesh holes of the screen 15, and the cooling air passing through the screen 15 directly contacts the falling feed to form heat exchange.

[0056] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooler for a feed pelletizing section, comprising a tank body (3), wherein the top and bottom of the tank body (3) are respectively provided with a feed inlet (2) and a feed outlet (7), and the top cover and bottom cover of the tank body (3) are respectively provided with an exhaust pipe (1) and an air inlet pipe (9), wherein: Inside the tank body (3), a first cooling section, a second cooling section and a third cooling section are sequentially arranged from the feed inlet (2) to the discharge outlet (7); An end plate (4) is provided in the first cooling section, and a gap (17) is formed between the end of the end plate (4) and the inner wall of the tank body (3) for materials to fall and gas to move upward; A guide plate (6) is arranged in the second cooling section, and the guide plate (6) comprises a hollow annular plate (61), and a fracture (67) is formed on the annular surface of the annular plate (61). The annular plate (61) forms a feeding section (62) and a discharging section (63) at the fracture (67), and the feeding section (62) is arranged below the notch (17); A receiving funnel (8) is provided in the third cooling section, and a central hole of the receiving funnel (8) is located above the discharge port (7).

2. A cooler for feed pelletizing according to claim 1, characterized in that: The annular disk (61) is formed with a first inclined surface and a second inclined surface, so that the material can fall along the first inclined surface and the second inclined surface from the discharge section (63) and the central opening of the annular disk (61).

3. A cooler for feed pelletizing according to claim 2, characterized in that: The first inclined surface comprises a spiral inclined surface (64) formed on the annular disk (61) in a direction extending from the feeding section (62) to the discharging section (63); the feeding section (62) and the discharging section (63) are arranged alternately up and down in the projection of the main view.

4. A cooler for feed pelletizing according to claim 2, characterized in that: The second inclined surface comprises an inclined surface (65) which is inclined downward from the outer edge to the inner edge of the annular disk (61).

5. A cooler for feed pelletizing according to any one of claims 1 to 4, characterized in that: The annular disk (61) is provided with a plurality of vertically penetrating grooves (66).

6. A cooler for feed pelletizing according to claim 1, characterized in that: The end plate (4) comprises a plate member, the inner side of which is hollow and on which a first screen (41) is fixed.

7. A cooler for feed pelletizing according to claim 6, characterized in that: An included angle α is formed between the end plate (4) and the inner wall of the tank body (3), 90°>α>50°.

8. A cooler for feed pelletizing according to claim 1, 6 or 7, characterized in that: The end plates (4) are multiple and arranged in a staggered manner from top to bottom, and a repeatedly bent flow channel (10) is formed between two adjacent end plates (4) through each notch (17).

9. A cooler for feed pelletizing according to claim 8, characterized in that: A bottom groove (5) is fixed to the bottom of the end plate (4) located at the bottom, a dust receiving chamber (13) is formed between the bottom groove (5) and the end plate (4), one end of a dust suction pipe (14) communicating with the dust receiving chamber (13) is connected to the bottom groove (5), and the other end of the dust suction pipe (14) extends out of the tank body (3) and is connected to a dust collector.

10. A cooler for feed pelletizing according to claim 1, characterized in that: The central hole of the receiving funnel (8) is connected to the discharge port (7) via a connecting tube (12); A screen (15) is provided on the surface of the receiving funnel (8), a clamping cavity (11) is formed between the receiving funnel (8) and the bottom of the tank body (3), and a slag discharge pipe (16) connected to the clamping cavity (11) is provided at the bottom of the tank body (3).

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