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 air distribution cavity plates are 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 pellet drying device has the beneficial effects 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, manpower is saved, the utilization rate of the pellets can be increased, and the environment is protected.

Description

Technical Field

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

[0002] The technology of returning ore to pellets mainly processes the discarded pellets by crushing, mixing, pressing, etc., so that they can become valuable production raw materials again. The application of this technology not only solves the problem of discarded pellets, but also realizes the reuse of resources, which is of great significance to promoting 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 vibrating 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 present invention provides a vertical drying machine for pellets with a vibration screen.

[0005] The technical scheme is as follows: a vertical dryer for pellets, including a platform bracket, the main points of which are: a drying straight box body and a vibrating feeding mechanism are installed on the platform bracket, wherein the vibrating feeding mechanism is located below the drying straight box body, a feeding port is provided at the upper end of the drying straight box body, and air distribution cavity plates are vertically arranged in the upper inner part of the drying straight box body, the upper end of the air distribution cavity plate is close to the feeding port of the drying straight box body, and a gap is left between the lower end and the bottom of the drying straight box body, an external air duct communicating with the air distribution cavity plate is provided outside the drying straight box body, a discharge port is provided at the bottom of the drying straight box body, and the discharge port of the drying straight box body is located above the vibrating feeding mechanism. With the above structure, the pellets enter the drying box from the upper feed port, 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 feeding mechanism below for further screening, which improves the utilization rate of the pellets and saves resources.

[0006] As a preference, there are several drying straight boxes, which are arranged side by side, and the air distribution cavity plates are arranged in 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 inlet of the drying straight box body along the length direction. An upper distribution cone with a strip structure is installed at the feed inlet 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 arranged directly below the drying box along the length direction. With the above structure, the air distribution cavity plate can realize the hot air penetration in the drying box, the upper support frame is equal to the parallel drying box, the upper feeding guide plate is inclined to facilitate the pellets to enter the drying box, and the upper distribution cone can make the pellets evenly distributed to avoid clogging in the box.

[0009] As a preference: 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 straight 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 straight box body, and the external air duct is installed on the front side of the drying straight box body, and communicates with the interior of the air distribution cavity plate through the strip hole;

[0010] The interior of the air distribution cavity plate is a hollow structure, a support block is horizontally arranged in the air distribution cavity plate, and the side wall of the air distribution cavity plate is covered with ventilation holes, and the air distribution cavity plate is connected with the inner cavity of the drying box through the ventilation holes. With the above structure, the hot air from the external air duct can enter the air distribution cavity plate through the strip holes on the front side of the drying box, and the ventilation holes on the side wall of the air distribution cavity plate can increase the temperature inside the drying box, so that the pellets passing through can be dried to 80%.

[0011] As a preference: the vibrating unloading mechanism includes a fixed bracket, a reinforcing rod is arranged on the fixed bracket, a plurality of unloading hoppers are arranged side by side on the fixed bracket, a lower distribution cone is fixed at the upper part of all the unloading hoppers, all the lower distribution cones are at the same horizontal height, and a vibrating screen plate is arranged 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 cone installed on the upper part of the unloading hopper can distribute the dried pellets to the left and right to avoid them being concentrated together and causing blockage in the unloading hopper, and the vibrating screen plate below can perform preliminary screening on the dried pellets.

[0012] Preferably, multiple groups of vibrating screen plate racks are arranged 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, which are connected by connecting rods. The vibrating screen plates are mounted on the main rods. Elastic components are arranged below the two ends of the main rods, and bolts are arranged at the ends of all the main rods to connect with the elastic components below. A vibration motor is arranged 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, so that the vibrating screen plate on the vibrating screen plate rack can be controlled to vibrate up and down, and the dried pellets can be further screened to eliminate some unqualified pellets.

[0013] Preferably, two lower baffles are arranged below the vibrating screen frame. The two lower baffles are arranged in a mirror image and are funnel-shaped, with their large ports facing the outlet of the lower hopper. An oblique upward support rod is arranged outside the lower baffle, and the other end of the oblique upward support rod is installed on a fixed bracket. With the above structure, the lower baffle can drop the pellets of unqualified size into the lower channel to prevent them from flying to the outside and increasing the burden of manual picking.

[0014] Preferably, a hopper baffle is installed at the bottom of the lower hopper, and 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 distribution cone and the lower distribution cone are triangular structures, and a plurality of supporting horizontal plates are arranged in the upper distribution cone and the lower distribution cone. With the above structure, the triangular distribution cone can disperse the fallen pellets on the left and right sides to avoid blockage.

[0016] As a preferred embodiment: the drying box and the vibrating unloading mechanism are installed on a platform bracket, a platform base plate is arranged around the upper part of the drying box, the platform base plate is lower than the upper feed port of the drying box, support frames are arranged on the platform base plates on the front and rear sides of the drying box, an inclined feed guide plate is arranged on the rear support frame, the front support frame extends to the middle drying box, a downwardly extending fixing rod is arranged at the extension, and the fixing rod extends into the drying box. With the above structure, the feed guide plate can prevent the pellets from scattering during feeding, and the fixing rod can reinforce the air distribution cavity plate to prevent the air distribution cavity plate from falling off during the drying process.

[0017] As a preference: the platform support comprises a plurality of support columns, the plurality of support columns are supported at the bottom of the platform base plate, a staircase leading to the platform base plate is arranged at the front side of the platform support, and a protective fence is arranged at the edges of the platform base plate. With the above structure, the support columns support the platform support, and the staff can go to the platform base plate to check the feeding and drying of the pellets through the stairs, and the fence can protect the staff who are checking on the platform base plate to avoid falling from the platform base plate and causing accidents.

[0018] Compared with the prior art, the present invention 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, so the pellets that can be recycled and generated in the production process can be dried, which can effectively save resources and protect the environment. The material 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 highly 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 sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 for Figure 1 A front view of

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

[0022] Figure 4 for Figure 2 Sectional view of AA in the middle;

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

[0024] Figure 6 It is a structural schematic diagram of a drying straight box 2;

[0025] Figure 7 It is a schematic diagram of the structure of the air distribution cavity plate 201;

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

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

[0028] Fig.10 It is a structural schematic diagram of the vibration feeding device 3;

[0029] Fig.11 for Fig.10 Side view of

[0030] Fig.12 It is a structural schematic diagram of a vibrating screen plate frame 312 and a vibrating screen plate 304;

[0031] Fig.13 for Fig.12 A top view of

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

[0033] Fig.15 for Fig.14 Sectional drawing;

[0034] Fig.16 It is a structural schematic diagram of the platform support 1. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with embodiments and drawings.

[0036] like Figures 1 to 5 As shown, the vertical dryer for pellets comprises a platform support 1, on which a drying box 2 and a vibrating material discharge mechanism 3 are installed, wherein the vibrating material discharge mechanism 3 is located below the drying box 2, and a material feed port is arranged 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 material feed port of the drying box 2, and a gap is left between the lower end and the bottom of the drying box 2, the drying box 2 is provided with an external air duct 6 communicated with the air distribution cavity plate 201, and the bottom of the drying box 2 is provided with a material discharge port. The discharge port of the drying box 2 is located above the vibrating feeding mechanism 3, and the hot air from the external air duct 6 enters the air distribution cavity plate 201 in the drying box 2, so that the temperature of the upper half of the drying box 2 is high. When the pellets enter the air distribution cavity plate 201 of the drying 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 feeding device 3 below for further screening.

[0037] There are several drying boxes 2, which are arranged side by side. The air distribution cavity plate 201 is arranged in the drying box 2 along the width direction, which can quickly increase the temperature of the drying box 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 the diversion of the upper distribution cone 4, the pellets can be evenly distributed in the drying 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 straight 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 straight box body 2, and the external air duct 6 is installed on the front side of the drying straight 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 walls of the air distribution cavity plate 201 are covered with air holes 203. The air distribution cavity plate 201 is connected with the inner cavity of the drying box body 2 through the air holes 203, so that the hot air from the external air duct 6 fills the entire drying box body 2, thereby drying the internal pellets.

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

[0042] A plurality of groups of vibrating screen plate frames 312 are arranged below the lower hopper 302, and 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, and the two main rods 308 are connected by a connecting rod 3. The vibrating screen plate 304 is mounted on the main rods 308, and elastic components 309 are arranged below the two ends of the main rods 308. Bolts are arranged at the ends of all the main rods 308 to connect with the elastic components 309 below, and a vibration motor 310 is arranged 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 is sleeved on the spring mounting column 3092, the length of the spring 3093 is greater than the length of the spring mounting column 3092, and a limiting cylinder 3094 is sleeved on the spring 3093, one end of the limiting cylinder 3093 does not contact the mounting plate 3091, and the other end is close to the bottom of the main rod 308;

[0044] A gasket 3095 is disposed in the limiting cylinder 3094 , and the bottom of the gasket 3095 contacts an 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 and are funnel-shaped, with their large ends facing the outlet of the lower hopper 302. An upward oblique support rod 305 is arranged outside the lower baffle plate 306, and the other end of the upward oblique support rod 305 is installed on the fixed bracket 301.

[0046] A hopper baffle 307 obliquely facing outward is installed at the bottom of the lower hopper 302, and a dustproof plate 311 is connected to the outer side 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 to the outside of the vertical dryer.

[0047] like Figures 1 to 4 and Fig.16As shown, the drying 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 box body 2, and the platform base plate 102 is lower than the upper feed port of the drying box body 2, and support frames 104 are arranged on the platform base plate 102 on the front and rear sides of the drying box body 2, and an inclined feed guide plate 5 is arranged on the rear support frame 1041, and the front support frame 1042 extends toward the middle of the drying box body 2, and a downwardly extending fixing rod 1043 is arranged at the extension, and the fixing rod 1043 extends into the drying box body 2, and abuts against one side of the air distribution cavity plate 201, so as to reinforce the air distribution cavity plate 201.

[0048] The platform bracket 1 includes a plurality of support columns 101, and 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 arranged on the front side of the platform bracket 1, and a protective fence 105 is arranged on the edges around 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 conditions 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 cross-sections of the upper distribution cone 4 and the lower distribution cone 303 are both triangular structures, and multiple supporting horizontal plates are arranged in the upper distribution cone 4 and the lower distribution cone 303. The pellets can be distributed on the front and rear sides through the distribution cone to avoid vertical falling and clogging the dryer. The vertical dryer can dry the pellets, save resources and protect 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, and such changes all fall within the scope of protection of the present invention.

Claims

1. A vertical pellet dryer, comprising a platform support (1), characterized in that: A drying box (2) and a vibrating material discharge mechanism (3) are installed on the platform support (1), wherein the vibrating material discharge mechanism (3) is located below the drying box (2), a material feed port is arranged 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 material 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 arranged outside the drying box (2), and a material discharge port is arranged at the bottom of the drying box (2), and the material discharge port of the drying box (2) is located above the vibrating material discharge mechanism (3).

2. The 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 arranged 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 opening of the drying straight box body (2) along the length direction. An upper material distribution cone (4) with a strip structure is installed at the feed opening of the drying straight box body (2) along the length direction, and the upper material distribution cone (4) is located in the middle of the drying straight box body (2); The vibrating material discharge mechanism (3) is arranged directly below the drying straight box body (2) along the length direction.

3. The 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 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 straight box body (2); the external air duct (6) is installed on the front side of the drying straight box body (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, a support block (204) is transversely arranged in the air distribution cavity plate (201), and ventilation holes (203) are distributed on the side wall of the air distribution cavity plate (201). 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 material discharging mechanism (3) comprises a fixed bracket (301), a reinforcing rod (314) is arranged on the fixed bracket (301), a plurality of the material discharging hoppers (302) are arranged side by side on the fixed bracket (301), a lower material distributing cone (303) of a strip structure is installed along the length direction between the material discharging hopper (302) and the discharge port of the drying straight box (2), and a vibrating screen plate (304) is arranged below the material discharging hopper (302).

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

6. The vertical pellet dryer according to claim 4 or 5, characterized in that: 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 and are funnel-shaped, with their large ends facing the outlet of the lower hopper (302). An oblique upward support rod (305) is arranged outside the lower baffle plate (306), and the other end of the oblique upward support rod (305) is installed on a fixed bracket (301).

7. The vertical pellet dryer according to claim 6, characterized in that: A hopper baffle (307) obliquely facing outward is installed at the bottom of the lower hopper (302), and a dustproof plate (311) is connected to the outer side 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 transverse plates are arranged inside 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 support (1) comprises a platform base plate (102), and the platform base plate (102) is arranged around the upper part of the drying box (2). The platform base plate (102) is lower than the upper feed port of the drying box (2). Support frames (104) are arranged on the platform base plate (102) on the front and rear sides of the drying box (2), and 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 (2), and a downwardly extending fixing rod (1043) is arranged at the extension part, and the fixing rod (1043) extends into the drying box (2).

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

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