Positive pressure type circulating grain dryer

Abstract

The utility model provides a positive pressure type circulating grain dryer. The positive pressure type circulating grain dryer comprises a tempering layer, the drying layer is arranged below the tempering layer, the drying layer comprises a first drying chamber, a uniform mixing chamber and a second drying chamber, the tempering layer communicates with the first drying chamber and the second drying chamber, and the uniform mixing chamber is arranged between the first drying chamber and the second drying chamber and communicates with the first drying chamber and the second drying chamber; the positive pressure fan is communicated with the uniform mixing chamber and is used for providing hot air; the grain stirring layer is arranged below the first drying chamber and the second drying chamber and communicates with the first drying chamber and the second drying chamber; and the stock bin is arranged below the grain stirring layer and is communicated with the grain stirring layer. Hot air is directly pressed into the first drying chamber and the second drying chamber from the uniform mixing chamber in a positive pressure manner, so that the hot air can be uniformly contacted with grains in the drying layer, the drying uniformity is ensured, the heat efficiency can be improved, and the aim of saving energy is fulfilled.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying equipment technical field especially relates to a positive pressure formula circulating grain dryer. BACKGROUND

[0002] The grain dryer refers to hot -blast drying box, adopts the way of hot -blast and grain convection to the grain that crosses the drying layer of drying machine and carries out drying. The mode of positive pressure air supply can guarantee the area of grain and hot -blast contact, adopts large air volume to remove the moisture in grain. The problem of grain drying is solved completely. The traditional grain dryer adopts the mode of negative pressure exhaust, although can carry out the drying of grain, but its drying efficiency is lower and the hot -blast utilization rate is relatively lower. CONTENT

[0003] The utility model provides a positive pressure formula circulating grain dryer to solve the defect that the grain dryer in prior art adopts the mode of negative pressure exhaust, although can carry out the drying of grain, but its drying efficiency is lower and the hot -blast utilization rate is relatively lower.

[0004] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows: a positive pressure formula circulating grain dryer, comprising:

[0005] The slow recovery layer is arranged below the drying layer and is communicated with the first drying chamber and the second drying chamber.

[0006] The drying layer is arranged below the slow recovery layer and comprises a first drying chamber, a mixing chamber and a second drying chamber.

[0007] The positive pressure fan is communicated with the mixing chamber and is used for providing hot air.

[0008] The grain pushing layer is arranged below the first drying chamber and the second drying chamber and is communicated with the first drying chamber and the second drying chamber.

[0009] The bunker is arranged below the grain pushing layer and is communicated with the grain pushing layer.

[0010] Preferably, the positive pressure fan is connected with a mixed air cover, and the mixed air cover covers the mixing chamber.

[0011] Preferably, the first drying chamber and the second drying chamber are respectively connected with air outlet covers, and the air outlet covers are respectively arranged on two sides of the drying layer.

[0012] Preferably, the first drying chamber and the second drying chamber are respectively provided with angle rods, the angle rods are arranged side by side from top to bottom, and the angle rods are communicated with the mixing chamber.

[0013] Preferably, the angle rod is hollow inside, and the top end of the angle rod is in the form of an angle.

[0014] Preferably, the lifting machine is arranged at the side end of the recovery layer and the drying layer, and two ends of the lifting machine are connected with the bunker and the recovery layer respectively.

[0015] Preferably, the grain pushing layer comprises a pushing assembly, an arc plate assembly and a tripod, a plurality of arc plate assemblies are arranged side by side, the adjacent arc plate assemblies are connected through the tripod, and the arc plate assembly is also provided with the tripod above.

[0016] Preferably, the pushing assembly comprises a motor, a rotating shaft and a pushing plate, the rotating shaft is connected with the output end of the motor, and the pushing plate is arranged on the rotating shaft.

[0017] Preferably, the arc plate assembly comprises a supporting plate and arc-shaped plates arranged on both sides of the supporting plate, and the bottom end of the arc-shaped plate is upwardly curved.

[0018] Preferably, the utility model also comprises:

[0019] The machine frame is arranged below the grain pushing layer, and the bunker is arranged on the machine frame.

[0020] Compared with the prior art, the grain dryer adopts a positive pressure mode to directly press hot air from the mixing chamber into the first drying chamber and the second drying chamber, so that the hot air can uniformly contact the grain in the drying layer, the uniformity of drying is ensured, and the heat efficiency is improved, so that the purpose of energy saving is achieved. Meanwhile, the mixing chamber is increased, so that the hot air can be effectively mixed before entering the dryer, and the hot air contacting the grain is more uniform. The dryer increases the height of the drying layer, so that more grain contacts the hot air, and the low-temperature drying mode is adopted, so that the drying speed of the grain is improved under the premise of ensuring the quality of the grain. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0022] Figure 1 It is a structure schematic view of the grain dryer provided by the utility model;

[0023] Figure 2 It is a structure schematic view of the drying layer provided by the utility model.

[0024] Figure 3 is a structural schematic view of the grain pushing layer provided by the present application;

[0025] Figure 4 is a structural schematic view of the pushing plate provided by the present application;

[0026] Figure 5 is a structural schematic view of the arc-shaped plate provided by the present application.

[0027] Reference signs:

[0028] 10, slow recovery layer; 20, drying layer; 21, first drying chamber; 22, mixing chamber; 23, second drying chamber; 30, positive pressure fan; 40, grain pushing layer; 41, pushing assembly; 411, rotating shaft; 412, pushing plate; 413, mounting plate; 42, arc plate assembly; 421, supporting plate; 422, arc-shaped plate; 43, tripod; 50, material bin; 60, rack; 70, air mixing cover; 80, air outlet cover; 90, angle rod; 100, elevator. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] As shown in Figures 1 to 5 the present application provides a positive pressure type circulating grain dryer. The grain dryer includes a slow recovery layer 10, a drying layer 20, a positive pressure fan 30, a grain pushing layer 40, a material bin 50 and a rack 60. The slow recovery layer 10 is used to slow down the speed of grain falling and make the grain fall dispersedly. The drying layer 20 is arranged below the slow recovery layer 10 and is used to dry the grain. The rack 60 is arranged below the grain pushing layer 40, and the material bin 50 is arranged on the rack 60.

[0031] The drying layer 20 comprises a first drying chamber 21, a mixing chamber 22 and a second drying chamber 23, the first drying chamber 21 and the second drying chamber 23 are communicated with the recovery layer 10, and the first drying chamber 21 and the second drying chamber 23 are used for receiving the grain falling from the recovery layer 10 and drying respectively, the mixing chamber 22 is arranged between the first drying chamber 21 and the second drying chamber 23 and communicated with each other, the positive pressure fan 30 is communicated with the mixing chamber 22 and used for providing hot air, the hot air provided by the positive pressure fan 30 enters the mixing chamber 22 and enters the first drying chamber 21 and the second drying chamber 23 respectively to dry the grain in the first drying chamber 21 and the second drying chamber 23, and the grain pushing layer 40 is arranged below the first drying chamber 21 and the second drying chamber 23 and communicated with the first drying chamber 21 and the second drying chamber 23, and the grain in the first drying chamber 21 and the second drying chamber 23 is pushed into the bunker 50 below by the grain pushing layer 40 after being dried.

[0032] The grain dryer directly pressurizes the hot air from the mixing chamber 22 into the first drying chamber 21 and the second drying chamber 23 in a positive pressure mode, which can make the hot air uniformly contact the grain in the drying layer 20, ensure the uniformity of drying, and improve the thermal efficiency, so that the purpose of energy saving is achieved. Meanwhile, the mixing chamber 22 is added, which can ensure that the hot air is effectively mixed before entering the dryer, so that the hot air contacting the grain is more uniform. The dryer increases the height of the drying layer 20, so that more grain contacts the hot air, and the low-temperature drying mode is adopted, so that the drying speed of the grain is improved under the premise of ensuring the quality of the grain.

[0033] In an embodiment, the positive pressure fan 30 is connected with a mixed air cover 70, the mixed air cover 70 covers the mixing chamber 22, the mixed air cover 70 plays a guiding role for the hot air, and the mixed air cover 70 is in a diffusion shape, so that the hot air entering the mixing chamber 22 is more uniform.

[0034] Further, the first drying chamber 21 and the second drying chamber 23 are respectively connected with air outlet covers 80, and the air outlet covers 80 are respectively arranged on the two sides of the drying layer 20. The air entering from the mixed air cover 70 enters the first drying chamber 21 and the second drying chamber 23 in the mixing chamber 22 respectively to dry the grain, and then is discharged from the air outlet cover 80, at this time, the relatively low-temperature and humid air with grain moisture is discharged, so that the first drying chamber 21 and the second drying chamber 23 always maintain high-temperature and dry air.

[0035] Specifically, the buffer layer 10 adopts a two-bank structure, the first drying chamber 21 and the second drying chamber 23 are both provided with corner rods 90, a plurality of corner rods 90 are arranged side by side from top to bottom, and the corner rods 90 are communicated with the mixing chamber 22. The hot air blown in by the positive pressure fan 30 enters the plurality of corner rods 90 from the mixing chamber 22, so that the corner rods 90 can heat up, and the grain falling from the buffer layer 10 will slide from the surfaces of the plurality of corner rods 90 in turn. Since the heated surface of the corner rods 90 generates high temperature, the temperature in the first drying chamber 21 and the second drying chamber 23 also becomes high, and the grain will be heated in the falling process and on the surfaces of the corner rods 90, thereby being dried.

[0036] Specifically, the corner rods 90 are hollow inside, which facilitates the entry of hot air. The top ends of the corner rods 90 are in the shape of an included angle, that is, the top ends of the corner rods 90 are both provided with inclined surfaces. In this way, the grain can slide from the surfaces of the corner rods 90, and accumulation on the corner rods 90 is avoided.

[0037] In an embodiment, the grain dryer further comprises an elevator 100, which is arranged at the side end of the buffer layer 10 and the drying layer 20, and the two ends of the elevator 100 are connected with the bunker 50 and the buffer layer 10 respectively. The elevator 100 is used to lift the grain from the bottom end of the grain dryer to the top end of the grain dryer, so as to facilitate the entry of the grain into the buffer layer 10,

[0038] In an embodiment, the grain pushing layer 40 comprises a pushing assembly 41, an arc plate assembly 42, and a tripod 43. A plurality of arc plate assemblies 42 are arranged side by side. The arc plate assembly 42 is used to buffer the falling grain. The tripod is used to disperse the grain onto the plurality of arc plate assemblies 42. The adjacent arc plate assemblies 42 are connected through the tripod 43. The top of the arc plate assembly 42 is also provided with a tripod. The pushing assembly 41 is used to push the grain away from the arc plate assembly 42.

[0039] Specifically, the pushing assembly 41 comprises a motor, a rotating shaft 411, and a pushing plate 412. The motor is connected with the arc plate assembly 42 through a mounting plate 413. The arc plate assembly 42 comprises a support plate 421 and arc-shaped plates 422 arranged on both sides of the support plate 421. The bottom end of the arc-shaped plate 422 is upwardly curved. The support plate 421 is fixedly connected with the mounting plate 413. The rotating shaft 411 is connected with the output end of the motor. The pushing plate 412 is arranged on the rotating shaft 411 and is above the bottom end of the arc-shaped plate 422. When the motor rotates to drive the rotating shaft 411 to rotate, the rotating shaft 411 drives the pushing plate 412 to rotate. The pushing plate 412 pushes the grain on the arc-shaped plate 422, so that the grain moves away from the arc-shaped plate 422 and falls into the bunker 50 below.

[0040] The whole machine adopts a structure without upper and lower conveyors. The grain slides downward by its own gravity. This way can not only reduce the grain breakage caused by the conveyors in the circulating drying process, but also reduce the power consumption and the occurrence of faults.

[0041] Finally, it should be noted that the above examples are intended to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A positive pressure cycle grain dryer characterised in that, It comprises: a recovery layer; a drying layer arranged below the recovery layer, the drying layer comprising a first drying chamber, a mixing chamber and a second drying chamber, the recovery layer being in communication with the first drying chamber and the second drying chamber respectively, the mixing chamber being arranged between the first drying chamber and the second drying chamber and in communication with each other; a positive pressure fan in communication with the mixing chamber and used for providing hot air; a grain pushing layer arranged below the first drying chamber and the second drying chamber and in communication with the first drying chamber and the second drying chamber; a hopper arranged below the grain pushing layer and in communication with the grain pushing layer.

2. The positive pressure circulating grain dryer according to claim 1, wherein: the positive pressure fan is connected with a mixed air cover, and the mixed air cover covers the mixing chamber.

3. The positive pressure circulating grain dryer according to claim 2, wherein: the first drying chamber and the second drying chamber are respectively connected with air outlet covers, and the air outlet covers are respectively arranged on two sides of the drying layer.

4. The positive pressure circulating grain dryer according to any one of claims 1 to 3, wherein: the first drying chamber and the second drying chamber are respectively provided with angle rods, and the angle rods are arranged side by side from top to bottom, and the angle rods are in communication with the mixing chamber.

5. The positive pressure circulating grain dryer according to claim 4, wherein: the angle rods are hollow inside, and the top end of the angle rod is in the shape of an included angle.

6. The positive pressure cycle grain dryer according to any one of claims 1 to 3, characterized in that It further comprises: an elevator arranged at the side end of the recovery layer and the drying layer, and two ends of the elevator are respectively connected with the hopper and the recovery layer.

7. The positive pressure circulating grain dryer according to any one of claims 1 to 3, wherein: the grain pushing layer comprises a pushing assembly, an arc plate assembly and a tripod, a plurality of arc plate assemblies are arranged side by side, adjacent arc plate assemblies are connected through the tripod, the top of the arc plate assembly is also provided with the tripod, and the pushing assembly is used for pushing the grain away from the arc plate assembly.

8. The positive pressure circulating grain dryer according to claim 7, wherein: the pushing assembly comprises a motor, a rotating shaft and a pushing plate, the rotating shaft is connected with the output end of the motor, and the pushing plate is arranged on the rotating shaft.

9. The positive pressure circulating grain dryer according to claim 7, wherein: the arc plate assembly comprises a support plate and arc-shaped plates arranged on both sides of the support plate, and the bottom end of the arc-shaped plate is upwardly curved.

10. The positive pressure cycle grain dryer according to any one of claims 1 to 3, characterized in that, It further comprises: a rack arranged below the grain pushing layer, and the hopper is arranged on the rack.

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