Hot air grain dryer with uniform drying function

Abstract

The utility model discloses a hot air grain dryer capable of uniformly drying. The hot air grain dryer comprises a tower body; a screw conveyor; the two partition plates are vertically arranged in the tower body, the two partition plates are arranged on the two sides of the spiral conveyor correspondingly, the two first long edges of the two partition plates are detachably and correspondingly fixed to the outer side wall of the spiral conveyor, and the remaining two second long edges of the two partition plates are detachably connected to the first side wall correspondingly; the tower body is divided into an exhaust chamber close to the first side wall and a drying chamber close to the three second side walls; a plurality of air supply holes; a blast pipe; a plurality of material distribution plates; a plurality of exhaust holes; a plurality of exhaust pipes; and the air exhaust main opening is formed in the top of the air exhaust chamber. According to the hot air grain drying machine capable of conducting uniform drying, multidirectional mixed flow uniform drying operation can be conducted on grain in the tower body, the grain drying efficiency is improved, and meanwhile the grain quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to a hot air grain dryer for uniform drying. Background Art

[0002] Grain dryers are mainly used for drying wet grains. Grain dryers are widely used in crops such as corn, wheat, rice, and soybeans. Traditional grain dryers integrate a hot air furnace and a material box, and use the hot air of the hot air furnace to dry the grain. The grain cannot be turned over in the material box, and the dryness of the dried grain is uneven. The dryness is greater near the hot air furnace, and the dryness is lower far from the hot air furnace, which affects the quality of the grain. The Chinese patent with application number CN201720717885.6 discloses a mixed flow grain dryer, including a dryer and an elevator. The outer side of the elevator is fixed by a well frame. The feed port of the dryer is connected to the feed port of the elevator through a screw feeder, and the discharge port of the elevator is connected to the feed port of the dryer through a conveyor belt. The upper part of the dryer is a mixed flow area, and the lower part is a drying area. The side wall of the drying area of ​​the dryer is connected with an air supply pipe and an exhaust pipe, and the bottom of the dryer is connected with a cold air inlet pipe. The grain dryer uses hot air as the drying medium and adopts a circulating drying process. The grain is heated and hydrated evenly and fully, and the quality is good after drying. Figure 1 It can be seen that the air supply pipe 8 is arranged on one side of the dryer 1, and the exhaust pipe 9 is arranged on the other side of the dryer 1. It will also result in that the grain drying degree is high on the side close to the air supply pipe 8 and the grain drying degree is low on the other side close to the exhaust pipe 9, which affects the grain quality. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described below.

[0004] Another object of the utility model is to provide a hot air grain dryer for uniform drying, which can perform multi-directional mixed-flow uniform drying operations on the grain in the tower body, thereby improving the grain drying efficiency and ensuring the grain quality.

[0005] In order to achieve these purposes and other advantages according to the utility model, a hot air grain dryer for uniform drying is provided, comprising:

[0006] tower body;

[0007] A screw conveyor is vertically arranged in the tower body, and the screw conveyor is arranged close to the first side wall of the tower body;

[0008] Two partitions are vertically arranged in the tower body, and the two partitions are arranged on both sides of the screw conveyor, the two first long edges of the two partitions are detachably fixed to the outer side walls of the screw conveyor, and the remaining two second long edges of the two partitions are detachably connected to the first side walls, so as to divide the tower body into an exhaust chamber close to the first side wall and a drying chamber close to the three second side walls, and the volume of the exhaust chamber is smaller than the volume of the drying chamber;

[0009] A plurality of air supply holes are provided on the three second side walls;

[0010] An air supply pipe, the air inlet end of which is connected to a plurality of air supply holes;

[0011] Multiple distribution plates, which are multiple arc-shaped plates, are arranged in sequence from top to bottom in the drying chamber, and the specifications of the multiple distribution plates gradually increase from top to bottom; any of the multiple distribution plates is arranged with the screw conveyor as the center of the circle, extending obliquely downward in the drying chamber, and the inclination angles of the multiple distribution plates are consistent; the discharge port of the screw conveyor is located directly above the distribution plate at the uppermost end; the feed port at the lower end of the screw conveyor extends to the collecting hopper at the bottom of the drying chamber;

[0012] A plurality of exhaust holes are evenly spaced and arranged on the two partitions;

[0013] A plurality of exhaust pipes are evenly spaced and arranged in the exhaust chamber, and one end of the plurality of exhaust pipes is connected to a plurality of exhaust holes, and a plurality of air holes are arranged on the pipe wall of any exhaust pipe;

[0014] The main exhaust port is arranged at the top of the exhaust chamber.

[0015] Preferably, the ratio of the board width of any one of the plurality of cloth boards to the board width of any one of the cloth boards adjacent thereto is 1:2-2:3.

[0016] Preferably, the air supply volume of the multiple air supply holes is 1 times to 1.5 times the air exhaust volume of the multiple air exhaust holes.

[0017] Preferably, any cloth panel further comprises:

[0018] A plurality of limit strips are arranged on the upper surface of any material distribution plate in a divergent shape with the screw conveyor as the center;

[0019] Multiple leakage openings are evenly spaced apart and arranged in multiple material guiding areas separated by multiple limit bars, and two adjacent leakage openings are separated by two limit bars. Multiple leakage openings are arranged near the arc edge on the outer side of any material distribution plate, and in the vertical direction, multiple leakage openings on two adjacent upper and lower material supply plates are staggered with each other.

[0020] Preferably, the volume of the exhaust chamber is less than one quarter of the volume of the drying chamber.

[0021] Preferably, it further comprises: two air distribution pipes, which are arranged in parallel and spaced apart on the outer side wall of the screw conveyor, and the two air distribution pipes are arranged in the drying chamber, and the air inlet ends of the two air distribution pipes are connected to the air inlet pipe;

[0022] A plurality of air distribution holes are provided on the two air distribution pipes, and the wind directions of the plurality of air distribution holes toward the plurality of distribution plates are evenly distributed.

[0023] The utility model at least has the following beneficial effects:

[0024] The two partitions and the screw conveyor together divide the interior of the tower into an exhaust chamber on one side and a drying chamber on the other side. Multiple air inlets are distributed on the three second side walls of the drying chamber to carry out large-scale and all-round drying of the grains that slide down step by step through multiple distribution plates, avoiding low drying temperature of local grains and ensuring the grain drying effect;

[0025] The two partitions are also used to support and fix the screw conveyor, and discharge the air after drying the grain through multiple exhaust holes, thereby quickly drying the grain;

[0026] The screw conveyor is also used to lift the grain that has fallen into the collecting hopper again for another cycle of drying, so as to quickly achieve a uniform moisture content and ensure the quality of the grain;

[0027] Multiple distribution plates are arc-shaped plates, which can continuously expand the falling grain and slide it down step by step. On the basis of effectively increasing the heating area of ​​the grain, it also appropriately prolongs the time of a drying process and reasonably improves the grain drying efficiency.

[0028] In summary, the hot air grain dryer for uniform drying provided by the utility model can perform multi-directional mixed-flow uniform drying operations on the grain in the tower body, thereby improving the grain drying efficiency and ensuring the grain quality.

[0029] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic cross-sectional structure diagram of a hot air grain dryer for uniform drying according to one embodiment of the utility model;

[0031] Figure 2 It is a structural schematic diagram of a cross section of a hot air grain dryer for uniform drying according to one embodiment of the utility model;

[0032] Figure 3This is a schematic diagram of a top view of two adjacent cloth plates in another embodiment of the utility model;

[0033] Figure 4 It is a schematic cross-sectional structure diagram of a hot air grain dryer for uniform drying according to one embodiment of the utility model;

[0034] Figure 5 The figure is a schematic top view of the structure of two adjacent cloth plates in another embodiment of the utility model. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0036] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0037] like Figure 1 , 2 As shown, the utility model provides a hot air grain dryer for uniform drying, comprising:

[0038] Tower body 10;

[0039] A screw conveyor 20 is vertically arranged in the tower body, and the screw conveyor is arranged close to the first side wall 101 of the tower body;

[0040] Two partitions 30 are vertically arranged in the tower body, and the two partitions are arranged on both sides of the screw conveyor. The two first long edges of the two partitions are detachably fixed to the outer side wall of the screw conveyor, and the remaining two second long edges of the two partitions are detachably connected to the first side wall, so as to divide the tower body into an exhaust chamber 102 close to the first side wall and a drying chamber 103 close to the three second side walls, and the volume of the exhaust chamber is smaller than the volume of the drying chamber;

[0041] A plurality of air supply holes 1041, which are provided on the three second side walls 104;

[0042] The air supply pipe 40 has an air inlet end connected to a plurality of air supply holes; in order to maintain a uniform air inlet volume and a relatively uniform air inlet temperature, the air inlet end of the air supply pipe can be provided with a plurality of branch covers 401, which are sequentially buckled on the plurality of air supply holes;

[0043] A plurality of distribution plates 50 are arc-shaped plates, which are arranged in sequence from top to bottom in the drying chamber, and the specifications of the plurality of distribution plates gradually increase from top to bottom; any of the plurality of distribution plates is arranged to extend obliquely downward in the drying chamber with the screw conveyor as the center, and the inclination angles of the plurality of distribution plates are consistent; the discharge port 201 of the screw conveyor is located directly above the distribution plate at the uppermost end; the feed port 202 at the lower end of the screw conveyor extends to the collecting hopper 105 at the bottom of the drying chamber;

[0044] A plurality of exhaust holes 301, which are evenly spaced and arranged on the two partitions;

[0045] A plurality of exhaust pipes 60 are evenly spaced and arranged in the exhaust chamber, and one end of the plurality of exhaust pipes is connected to a plurality of exhaust holes, and a plurality of air holes are arranged on the pipe wall of any exhaust pipe;

[0046] The exhaust main port 106 is arranged at the top of the exhaust chamber. Multiple filter layers can be arranged in the exhaust chamber to remove a large amount of dust brought out after drying and then discharge the cooled air to protect the environment.

[0047] In this scheme, two partitions and a screw conveyor together divide the interior of the tower into an exhaust chamber on one side and a drying chamber on the other side. Multiple air inlet holes are distributed on the three second side walls of the drying chamber to perform large-scale and all-round drying of the grains that slide down step by step through multiple distribution plates, thereby avoiding low drying temperatures of local grains and ensuring the grain drying effect.

[0048] The two partitions are also used to support and fix the screw conveyor, and discharge the air after drying the grain through multiple exhaust holes, thereby quickly drying the grain;

[0049] The screw conveyor is also used to lift the grain that has fallen into the collecting hopper again for another cycle of drying, so as to quickly achieve a uniform moisture content and ensure the quality of the grain;

[0050] Multiple distribution plates are arc-shaped plates, which can continuously expand the falling grain and slide it down step by step. On the basis of effectively increasing the heating area of ​​the grain, it also appropriately prolongs the time of a drying process and reasonably improves the grain drying efficiency.

[0051] In summary, the hot air grain dryer for uniform drying provided by the utility model can perform multi-directional mixed-flow uniform drying operations on the grain in the tower body, thereby improving the grain drying efficiency and ensuring the grain quality.

[0052] like Figure 1 As shown, in a preferred embodiment, the ratio of the width of any cloth plate among the multiple cloth plates to the width of any cloth plate adjacent thereto is 1:2-2:3, for example, the width ratio is 1:2 or 2:3.

[0053] In a preferred embodiment, the air supply volume of the multiple air supply holes is 1 to 1.5 times the air exhaust volume of the multiple air exhaust holes.

[0054] like Figure 3 , 4 As shown, in a preferred embodiment, any cloth plate further comprises:

[0055] A plurality of limit strips 501 are arranged on the upper surface of any material distribution plate in a divergent shape with the screw conveyor as the center;

[0056] Multiple leakage ports 502 are evenly spaced and arranged in multiple material guide areas separated by multiple limit bars, and two adjacent leakage ports are separated by two limit bars. Multiple leakage ports are arranged near the arc edge of the outer side of any material distribution plate, and in the vertical direction, multiple leakage ports on two upper and lower adjacent material supply plates are staggered. Multiple material guide areas separated by multiple limit bars can help to keep the distribution of grains falling step by step more uniform. Multiple leakage ports can be used to leak part of the fallen grains from the middle of the material distribution plate, so as to divert part of the grains and directly leak them into the next layer of the material distribution plate, thereby increasing the sliding stroke of the grains on the material distribution plate and the expansion space of the grains, so as to divide the grains into multiple layers in space, further increase the contact area and contact time between the grains and the hot air, and improve the drying efficiency of the grains.

[0057] In a preferred embodiment, the volume of the exhaust chamber is less than one quarter of the volume of the drying chamber.

[0058] like Figure 5 As shown, in a preferred embodiment, it further includes: two air distribution pipes 70, which are spaced apart and arranged in parallel on the outer wall of the screw conveyor, and the two air distribution pipes are arranged in the drying chamber, and the air inlet ends of the two air distribution pipes are connected to the air inlet pipe; multiple air distribution holes 701, which are opened on the two air distribution pipes, and the multiple air distribution holes are evenly distributed toward the wind direction of multiple distribution plates. The setting of the two air distribution pipes is used to further supplement the blowing direction of the drying air, ensure the all-round drying treatment of the grain, and improve the drying efficiency.

[0059] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A hot air grain dryer for uniform drying, characterized in that: include: tower body; A screw conveyor is vertically arranged in the tower body, and the screw conveyor is arranged close to the first side wall of the tower body; Two partitions are vertically arranged in the tower body, and the two partitions are arranged on both sides of the screw conveyor, the two first long edges of the two partitions are detachably fixed to the outer side walls of the screw conveyor, and the remaining two second long edges of the two partitions are detachably connected to the first side walls, so as to divide the tower body into an exhaust chamber close to the first side wall and a drying chamber close to the three second side walls, and the volume of the exhaust chamber is smaller than the volume of the drying chamber; A plurality of air supply holes are provided on the three second side walls; An air supply pipe, the air inlet end of which is connected to a plurality of air supply holes; Multiple distribution plates, which are multiple arc-shaped plates, are arranged in sequence from top to bottom in the drying chamber, and the specifications of the multiple distribution plates gradually increase from top to bottom; any of the multiple distribution plates is arranged with the screw conveyor as the center of the circle, extending obliquely downward in the drying chamber, and the inclination angles of the multiple distribution plates are consistent; the discharge port of the screw conveyor is located directly above the distribution plate at the uppermost end; the feed port at the lower end of the screw conveyor extends to the collecting hopper at the bottom of the drying chamber; A plurality of exhaust holes are evenly spaced and arranged on the two partitions; A plurality of exhaust pipes are evenly spaced and arranged in the exhaust chamber, and one end of the plurality of exhaust pipes is connected to a plurality of exhaust holes, and a plurality of air holes are arranged on the pipe wall of any exhaust pipe; The main exhaust port is arranged at the top of the exhaust chamber.

2. The hot air grain dryer for uniform drying according to claim 1, characterized in that: The ratio of the board width of any one of the plurality of cloth boards to the board width of any one of the cloth boards adjacent thereto is 1:2-2:

3.

3. The hot air grain dryer for uniform drying according to claim 1, characterized in that: The air supply volume of the multiple air supply holes is 1 to 1.5 times the air exhaust volume of the multiple air exhaust holes.

4. The hot air grain dryer for uniform drying according to claim 1, characterized in that: Any fabric panel also includes: A plurality of limit strips are arranged on the upper surface of any material distribution plate in a divergent shape with the screw conveyor as the center; Multiple leakage openings are evenly spaced apart and arranged in multiple material guiding areas separated by multiple limit bars, and two adjacent leakage openings are separated by two limit bars. Multiple leakage openings are arranged near the arc edge on the outer side of any material distribution plate, and in the vertical direction, multiple leakage openings on two adjacent upper and lower material supply plates are staggered with each other.

5. The hot air grain dryer for uniform drying according to claim 1, characterized in that: The volume of the exhaust chamber is less than one quarter of the volume of the drying chamber.

6. The hot air grain dryer for uniform drying according to claim 1, characterized in that: Also includes: Two air distribution pipes are arranged in parallel and spaced apart on the outer wall of the screw conveyor, and the two air distribution pipes are arranged in the drying chamber, and the air inlet ends of the two air distribution pipes are connected to the air inlet pipe; A plurality of air distribution holes are provided on the two air distribution pipes, and the wind directions of the plurality of air distribution holes toward the plurality of distribution plates are evenly distributed.

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