Vertical drying machine for pellets

Abstract

The vertical drying machine comprises a platform support, a drying straight box body and a vibration discharging mechanism are installed on the platform support, the vibration discharging mechanism is located below the drying straight box body, a feeding port is formed in the upper end of the drying straight box body, and a discharging port is formed in the lower end of the drying straight box body. An air distribution cavity plate is vertically arranged on the upper portion in the drying straight box body, the upper end of the air distribution cavity plate is close to a feeding port of the drying straight box body, a gap is reserved between the lower end of the air distribution cavity plate and the box bottom of the drying straight box body, an external air pipe communicated with the air distribution cavity plate is arranged outside the drying straight box body, and a discharging port is formed in the bottom of the drying straight box body. A discharge port of the drying straight box body is located above the vibration discharging mechanism. The drying device has the advantages that the temperature of the upper portion of the drying straight box body is high, the temperature of the lower portion of the drying straight box body is low, pellets passing through the box body can be completely dried, the vibration discharging mechanism is arranged at the lower end, the dried pellets are screened, the utilization rate of the pellets can be increased, and the environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a vertical drying machine for pellets. Background Art

[0002] The recycled pellet technology primarily processes discarded pellets through crushing, mixing, and agglomeration, turning them into valuable production raw materials. The application of this technology not only solves the problem of discarded pellet disposal but also enables resource reuse, which is of great significance for promoting a circular economy and green production.

[0003] The pellets produced by the return ore pelletizing technology need to be dried before the next step can be carried out. The output of pellets is generally large, and a large dryer is required for drying. During the transportation or drying process, some pellets are broken into small pieces and cannot be used. Therefore, a vertical dryer for pellets with a vibration screening structure is proposed. The dried pellets are vibrated and screened to screen out pellets of unqualified size, which effectively saves labor costs and achieves the purpose of saving resources and integrating resources for reuse. Summary of the Invention

[0004] In order to solve the above technical problems, the utility model provides a vertical dryer for pellets with vibration screening.

[0005] The technical solution is as follows: A vertical dryer for pellets, including a platform bracket, the main points of which are: a drying straight box and a vibrating unloading mechanism are installed on the platform bracket, wherein the vibrating unloading mechanism is located below the drying straight box, a feed port is provided at the upper end of the drying straight box, and air distribution cavity plates are vertically arranged in the upper part of the drying straight box, the upper end of the air distribution cavity plate is close to the feed port of the drying straight box, and a gap is left between the lower end and the bottom of the drying straight box, an external air duct communicating with the air distribution cavity plate is provided outside the drying straight box, a discharge port is provided at the bottom of the drying straight box, and the discharge port of the drying straight box is located above the vibrating unloading mechanism. With the above structure, the pellets enter the drying box from the feed port at the upper end, and pass through the upper air distribution cavity plate and the lower gap in turn. The upper air distribution cavity plate is connected to the external air duct, and its temperature is relatively high, so that the pellets passing through here are dried to 80%. The temperature of the lower gap is relatively low, which further dries the pellets. The dried pellets fall into the vibrating discharge mechanism below for further screening, which improves the utilization rate of the pellets and saves resources.

[0006] As a preference, there are multiple drying straight boxes, which are arranged side by side, and the air distribution cavity plates are arranged inside the drying straight boxes along the width direction;

[0007] A support frame is provided on the platform bracket, and the support frame is located directly above the drying straight box body. A feed guide plate is installed on the support frame, and the feed guide plate is located above the feed opening of the drying straight box body along the length direction. An upper distribution cone with a strip structure is installed at the feed opening of the drying straight box body along the length direction, and the upper distribution cone is located in the middle of the drying straight box body.

[0008] The vibrating unloading mechanism is positioned lengthwise directly below the drying box. With this structure, the air distribution cavity plate allows hot air to flow through the drying box. The upper support frame is the same length as the parallel drying boxes. The tilted upper feed guide facilitates the entry of pellets into the drying box. The upper distribution cone ensures even distribution of pellets, preventing them from clogging within the box.

[0009] Preferably, the front and rear sides of the air distribution cavity plate are fixed to the inner side walls of the front and rear sides of the drying box body, and each of the air distribution cavity plates is provided with a strip hole on the front and rear sides of the drying box body. The external air duct is installed on the front side of the drying box body and communicates with the interior of the air distribution cavity plate through the strip hole.

[0010] The air distribution cavity plate is hollow, with support blocks positioned transversely within it. Its sidewalls are dotted with ventilation holes, connecting the plate to the interior of the drying cabinet. With this structure, hot air from the external air duct enters the air distribution cavity plate through the strip holes on the front of the drying cabinet. The ventilation holes on the sidewalls of the air distribution cavity plate raise the temperature inside the drying cabinet, ensuring that the pellets passing through are dried to 80%.

[0011] Preferably, the vibrating unloading mechanism includes a fixed bracket with a reinforcement rod mounted on the fixed bracket, multiple unloading hoppers are arranged side by side on the fixed bracket, lower distribution cones are fixed to the upper portion of each unloading hopper, all of the lower distribution cones are at the same horizontal height, and a vibrating screen plate is installed below the unloading hopper. With the above structure, the positions of the unloading hoppers are reasonably distributed according to the structure of the fixed bracket. The lower distribution cones installed on the upper portion of the unloading hopper can distribute the dried pellets to the left and right, avoiding aggregation and blockage in the unloading hopper. The vibrating screen plate below can perform preliminary screening of the dried pellets.

[0012] Preferably, multiple groups of vibrating screen plate racks are provided below the lower hopper, and the vibrating screen plate racks are mounted on the reinforcing rods. The vibrating screen plate racks include two parallel main rods connected by a connecting rod, and the vibrating screen plates are mounted on the main rods. Elastic components are provided below both ends of the main rods, and bolts are provided at the ends of all the main rods to connect with the elastic components below. A vibration motor is provided in the middle of one side of the connecting rod. With the above structure, the vibrating screen plate rack cooperates with the elastic component and the vibration motor, thereby controlling the vibrating screen plates on the vibrating screen plate rack to vibrate up and down, further screening the dried pellets and eliminating some unqualified pellets.

[0013] Preferably, two lower baffles are installed below the vibrating screen frame. These baffles are arranged in a mirror-image arrangement and are funnel-shaped, with their larger ends facing the outlet of the lower hopper. An upwardly inclined support rod is installed on the exterior of each baffle, with the other end of the rod mounted on a fixed bracket. With this structure, the baffles can divert unqualified pellets into the channel below, preventing them from flying outward and increasing the burden of manual collection.

[0014] Preferably, a hopper baffle is installed at the bottom of the lower hopper, which is inclined outward. A dustproof plate is connected to the outside of the hopper baffle, and the other end of the dustproof plate is sleeved on the main rod. With the above structure, all the dried pellets can fall onto the vibrating screen for further screening.

[0015] Preferably, the cross-sections of the upper and lower distribution cones are triangular, and multiple supporting horizontal plates are provided inside the upper and lower distribution cones. With the above structure, the triangular distribution cones can disperse the falling pellets to the left and right sides, avoiding blockage.

[0016] Preferably, the drying box and the vibrating unloading mechanism are mounted on a platform bracket. Platform base plates are provided around the upper portion of the drying box, the base plates being lower than the upper feed opening of the drying box. Support frames are provided on the platform base plates at the front and rear sides of the drying box, with an inclined feed guide plate provided on the rear support frame. The front support frame extends toward the middle of the drying box, with a downwardly extending fixing rod provided at the extension point. The fixing rod extends into the drying box. With the above structure, the feed guide plate can prevent pellets from scattering during feeding, and the fixing rod can reinforce the air distribution cavity plate to prevent it from falling off during the drying process.

[0017] Preferably, the platform support includes multiple support columns, which support the bottom of the platform base. A staircase leading to the platform base is provided on the front side of the platform support, and protective fences are provided around the edges of the platform base. With the above structure, the support columns support the platform support, allowing workers to access the platform base via the stairs to check on the pellet feeding and drying conditions. The fences protect workers from falling from the platform base and causing accidents.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the temperature of the upper part of the drying box of the vertical dryer is high, and the temperature of the lower part is low, which can dry the pellets that can be reused produced in the production process, effectively save resources and protect the environment, and the distribution cone in the drying production process can be evenly distributed during feeding and discharging to avoid blockage. There is a connection between the external air duct and the air distribution cavity plate, so that the hot air can fill the entire drying box, which is efficient and energy-saving and can improve the drying efficiency. A vibrating screen plate is provided at the bottom to screen the dried pellets and remove pellets of unqualified size. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 for Figure 1 Front view of

[0021] Figure 3 for Figure 1 A top view of

[0022] Figure 4 for Figure 2 Cross-sectional view of AA;

[0023] Figure 5 for Figure 3 Cross-sectional view of the middle BB;

[0024] Figure 6 This is a structural diagram of the drying box 2;

[0025] Figure 7 Schematic diagram of the structure of the air distribution cavity plate 201;

[0026] Figure 8 for Figure 6 A top view of

[0027] Figure 9 for Figure 8 Cross-sectional view of CC;

[0028] Figure 10 It is a structural diagram of the vibration blanking device 3;

[0029] Figure 11 for Figure 10 Side view of;

[0030] Figure 12 Schematic diagram of the structure of the vibrating screen plate frame 312 and the vibrating screen plate 304;

[0031] Figure 13 for Figure 12 A top view of

[0032] Figure 14 is a schematic structural diagram of the elastic component 309;

[0033] Figure 15 for Figure 14 cross-section;

[0034] Figure 16 Schematic diagram of the structure of the platform bracket 1. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0036] like Figures 1 to 5 As shown, a vertical dryer for pellets comprises a platform bracket 1, on which a drying box body 2 and a vibrating unloading mechanism 3 are mounted, wherein the vibrating unloading mechanism 3 is located below the drying box body 2, and a feeding port is provided at the upper end of the drying box body 2, and an air distribution cavity plate 201 is vertically arranged in the upper part of the drying box body 2, the upper end of the air distribution cavity plate 201 is close to the feeding port of the drying box body 2, and a gap is left between the lower end and the bottom of the drying box body 2, an external air duct 6 communicating with the air distribution cavity plate 201 is provided outside the drying box body 2, and a discharge port is provided at the bottom of the drying box body 2. The discharge port of the drying straight box 2 is located above the vibrating discharge mechanism 3, and the hot air from the external air duct 6 enters the air distribution cavity plate 201 in the drying straight box 2, so that the temperature of the upper half of the drying straight box 2 is high. When the pellets enter the air distribution cavity plate 201 of the drying straight box 2 through the feed port, they can be dried to 80%, and an empty box is formed in the gap in the lower half. The temperature of the empty box is lower than that of the air distribution cavity plate 201. The pellets falling into the empty box can dry out the remaining 20% ​​of moisture. The entire drying process will last for at least 3 hours. The dried pellets fall into the vibrating discharge device 3 below for further screening.

[0037] There are several drying boxes 2, which are arranged side by side. The air distribution cavity plates 201 are arranged in the width direction of the drying boxes 2, which can quickly increase the temperature of the drying boxes 2.

[0038] A support frame 104 is provided on the platform bracket 1, and the support frame 104 is located directly above the drying straight box body 2. A feed guide plate 5 is installed on the support frame 104, and the feed guide plate 5 is located above the feed port of the drying straight box body 2 along the length direction. An upper distribution cone 4 with a strip structure is installed at the feed port of the drying straight box body 2 along the length direction. The upper distribution cone 4 is located in the middle of the drying straight box body 2, and the feed guide plate 5 is inclined toward the middle upper distribution cone 4. The pellets can slide to the upper distribution cone 4 through the inclined feed guide plate 5. After passing through the diversion of the upper distribution cone 4, the pellets can be evenly distributed in the drying straight box body, so that they can be evenly dried. The vibrating unloading mechanism 3 is arranged directly below the drying straight box body 2 along the length direction, and the dried pellets fall into the vibrating unloading mechanism 3 from the bottom of the drying straight box body 2.

[0039] like Figures 6 to 9 As shown, the front and rear sides of the air distribution cavity plate 201 are fixed to the inner side walls of the front and rear sides of the drying box body 2, and each of the air distribution cavity plates 201 is provided with a strip hole 202 on the front and rear sides of the drying box body 2. The external air duct 6 is installed on the front side of the drying box body 2 and communicates with the interior of the air distribution cavity plate 201 through the strip hole 202.

[0040] The interior of the air distribution cavity plate 201 is a hollow structure, and a support block 204 is horizontally arranged in the air distribution cavity plate 201. The side wall of the air distribution cavity plate 201 is covered with air holes 203. The air distribution cavity plate 201 is connected with the inner cavity of the drying straight box body 2 through the air holes 203, so that the hot air from the external air duct 6 fills the entire drying straight box body 2, thereby drying the internal pellets.

[0041] like Figures 10 to 15 As shown, the vibrating discharge mechanism includes a fixed bracket 301, a reinforcement rod 314 is horizontally arranged on the fixed bracket 301, and multiple discharge hoppers 302 are arranged side by side on the fixed bracket 301. Lower distribution cones 303 are fixed on the upper part of all the discharge hoppers 302, and all the lower distribution cones 303 are at the same horizontal height. A vibrating screen plate 304 is arranged below the discharge hopper 302.

[0042] A plurality of vibrating screen plate frames 312 are provided below the lower hopper 302. The vibrating screen plate frames 312 are mounted on the reinforcing rods 314. The vibrating screen plate frames 312 include two parallel main rods 308. The two main rods 308 are connected by a connecting rod 3. The vibrating screen plates 304 are mounted on the main rods 308. Elastic components 309 are provided below both ends of the main rods 308. Bolts are provided at the ends of all the main rods 308 to connect with the elastic components 309 below. A vibration motor 310 is provided in the middle of the connecting rod 313 on one side.

[0043] The elastic component 309 includes a mounting plate 3091 fixedly connected to the reinforcement rod 314, a spring mounting column 3092 fixedly connected to the mounting plate 3091, a spring 3093 mounted on the spring mounting column 3092, the spring 3093 being longer than the spring mounting column 3092, and a limiting cylinder 3094 mounted on the spring 3093, one end of the limiting cylinder 3093 not in contact with the mounting plate 3091, and the other end abutting against the bottom of the main rod 308;

[0044] A gasket 3095 is provided in the limiting cylinder 3094 , and the bottom of the gasket 3095 contacts the end of the spring 3093 away from the mounting plate 3091 ; the bolt passes through the main rod 308 and is connected to the gasket 3095 .

[0045] Two lower baffle plates 306 are arranged below the vibrating screen plate frame 312. The two lower baffle plates 306 are arranged in a mirror-image manner and are funnel-shaped, with their large ends facing the outlet of the lower hopper 302. An oblique upward support rod 305 is provided on the outside of the lower baffle plate 306, and the other end of the oblique upward support rod 305 is installed on the fixed bracket 301.

[0046] A hopper baffle 307 is installed at the bottom of the lower hopper 302, which is inclined outward. A dustproof plate 311 is connected to the outside of the hopper baffle 307. The other end of the dustproof plate 311 is sleeved on the main rod 308. The dustproof plate 311 is in an inverted "L" shape, which can ensure that all the pellets discharged from the lower hopper 302 fall onto the vibrating screen 304 to avoid falling outside the vertical dryer.

[0047] like Figures 1 to 4 and Figure 16As shown, the drying straight box body 2 and the vibrating unloading mechanism 3 are installed on the platform bracket 1, and a platform base plate 102 is arranged around the upper part of the drying straight box body 2. The platform base plate 102 is lower than the upper feed port of the drying straight box body 2, and support frames 104 are arranged on the platform base plate 102 on the front and rear sides of the drying straight box body 2. An inclined feed guide plate 5 is arranged on the rear support frame 1041, and the front support frame 1042 extends toward the middle drying straight box body 2, and a downward extending fixing rod 1043 is provided at the extension. The fixing rod 1043 extends into the drying straight box body 2 and abuts against one side of the air distribution cavity plate 201 to reinforce the air distribution cavity plate 201.

[0048] The platform bracket 1 includes multiple support columns 101, and the multiple support columns 101 are supported on the bottom of the platform base plate 102. A staircase 103 leading to the platform base plate 102 is provided on the front side of the platform bracket 1, and a protective fence 105 is provided at the edges of the platform base plate 102. The support columns 101 support the platform bracket 1. The staff can go to the platform base plate 102 through the stairs 103 to check the feeding and drying of the pellets. The protective fence 105 can protect the staff who are checking on the platform base plate 102 to prevent them from falling from the platform base plate 102 and causing accidents.

[0049] The upper distribution cone 4 and the lower distribution cone 303 both have triangular cross-sections, and are equipped with multiple supporting horizontal plates. The pellets are distributed to the front and rear sides through the distribution cones, preventing them from falling vertically and clogging the dryer. This vertical dryer can dry pellets, saving resources and protecting the environment.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. A vertical dryer for pelletizing, comprising a platform support (1), characterized in that: A drying box (2) and a vibration unloading mechanism (3) are installed on the platform bracket (1), wherein the vibration unloading mechanism (3) is located below the drying box (2), a feed port is provided at the upper end of the drying box (2), and an air distribution cavity plate (201) is vertically arranged in the upper part of the drying box (2), the upper end of the air distribution cavity plate (201) is close to the feed port of the drying box (2), and a gap is left between the lower end and the bottom of the drying box (2), an external air duct (6) communicating with the air distribution cavity plate (201) is provided outside the drying box (2), and a discharge port is provided at the bottom of the drying box (2), and the discharge port of the drying box (2) is located above the vibration unloading mechanism (3).

2. A vertical pellet dryer according to claim 1, characterized in that: There are a plurality of drying straight boxes (2) arranged side by side, and the air distribution cavity plate (201) is arranged inside the drying straight box (2) along the width direction; A support frame (104) is provided on the platform support (1), and the support frame (104) is located directly above the drying straight box body (2). A feed guide plate (5) is installed on the support frame (104), and the feed guide plate (5) is located above the feed port of the drying straight box body (2) along the length direction. An upper distribution cone (4) with a strip structure is installed at the feed port of the drying straight box body (2) along the length direction, and the upper distribution cone (4) is located in the middle of the drying straight box body (2); The vibrating unloading mechanism (3) is arranged directly below the drying straight box (2) along the length direction.

3. A vertical pellet dryer according to claim 1 or 2, characterized in that: The front and rear sides of the air distribution cavity plate (201) are fixed to the inner side walls of the front and rear sides of the drying straight box (2), and a strip hole (202) is provided on the front and rear sides of each air distribution cavity plate (201) corresponding to the drying straight box (2). The external air duct (6) is installed on the front side of the drying straight box (2) and communicates with the interior of the air distribution cavity plate (201) through the strip hole (202); The interior of the air distribution cavity plate (201) is a hollow structure, and a support block (204) is arranged transversely in the air distribution cavity plate (201). The side wall of the air distribution cavity plate (201) is covered with ventilation holes (203), and the air distribution cavity plate (201) is connected to the inner cavity of the drying box body (2) through the ventilation holes (203).

4. The vertical pellet dryer according to claim 2, characterized in that: The vibrating unloading mechanism (3) comprises a fixed bracket (301), a reinforcing rod (314) is provided on the fixed bracket (301), a plurality of unloading hoppers (302) are arranged side by side on the fixed bracket (301), a lower distribution cone (303) with a strip structure is installed along the length direction between the unloading hopper (302) and the discharge port of the drying straight box (2), and a vibrating screen plate (304) is provided below the unloading hopper (302).

5. The vertical pellet dryer according to claim 4, characterized in that: A plurality of vibrating screen plate frames (312) are provided below the lower hopper (302). The vibrating screen plate frames (312) are mounted on the reinforcing rods (314). The vibrating screen plate frames (312) include two main rods (308) arranged in parallel. The two main rods (308) are connected by a connecting rod (313). The vibrating screen plates (304) are mounted on the main rods (308). Elastic components (309) are provided below both ends of the main rods (308). Bolts are provided at the ends of all the main rods (308) to connect with the elastic components (309) below. A vibration motor (310) is provided in the middle of the connecting rod (313) on one side.

6. The vertical pellet dryer according to claim 5, characterized in that: Two lower baffle plates (306) are provided below the vibrating screen plate frame (312). The two lower baffle plates (306) are arranged in a mirror-image manner and are funnel-shaped, with their large ends facing the outlet of the lower hopper (302). An oblique upward support rod (305) is provided outside the lower baffle plate (306), and the other end of the oblique upward support rod (305) is mounted on a fixed bracket (301).

7. The vertical pellet dryer according to claim 5, characterized in that: A hopper baffle (307) obliquely facing outward is installed at the bottom of the lower hopper (302), a dustproof plate (311) is connected to the outside of the hopper baffle (307), and the other end of the dustproof plate (311) is sleeved on the main rod (308).

8. The vertical pellet dryer according to claim 4, characterized in that: The cross-sections of the upper material distribution cone (4) and the lower material distribution cone (303) are both triangular structures, and a plurality of supporting horizontal plates are provided in the upper material distribution cone (4) and the lower material distribution cone (303).

9. The vertical pellet dryer according to claim 1, characterized in that: The platform bracket (1) includes a platform base plate (102), which is arranged around the upper part of the drying box body (2). The platform base plate (102) is lower than the upper feed port of the drying box body (2). Support frames (104) are arranged on the platform base plate (102) on the front and rear sides of the drying box body (2). An inclined feed guide plate (5) is arranged on the rear support frame (1041). The front support frame (1042) extends toward the middle of the drying box body (2). A downwardly extending fixing rod (1043) is arranged at the extension portion. The fixing rod (1043) extends into the drying box body (2).

10. The vertical pellet dryer according to claim 9, characterized in that: The platform bracket (1) further comprises a plurality of support columns (101), wherein the plurality of support columns (101) are supported on the bottom of the platform base plate (102), a staircase (103) leading to the platform base plate (102) is provided on the front side of the platform bracket (1), and a protective fence (105) is provided at the edges of the platform base plate (102).

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