An internal heating continuous grain drying tower and working method

Abstract

The present application relates to a kind of inner heat continuous grain drying tower and working method, including tower body, be equipped with angular box in tower body, one side of angular box is combustion side other side is settlement side, top of settlement side is equipped with top induced draft fan, angular box bottom is equipped with circulating air duct, circulating air duct is installed with circulating fan, the bottom of settlement side and combustion side is equipped with grain collecting hopper, grain collecting hopper is equipped with grain level detection element, the height of grain level detection element is lower than circulating air duct, the grain outlet of grain collecting hopper bottom corresponds with the grain inlet end of conveying mechanism, the grain drying tower using the present application avoids manual cleaning, reduces labor cost, improves drying efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grain drying, in particular to an internal heating continuous grain drying tower and working method. BACKGROUND

[0002] The statements herein only provide background technology related to the present application, and do not necessarily constitute prior art.

[0003] At present, in the internal heating continuous grain drying tower, when the grain is dried, due to the structure and process problems, the grain and impurities in the drying layer are carried out from the angle box outlet by the air flow of the top induced draft fan and the bottom circulating fan, and fall to the settlement side, and the grain and impurities falling to the settlement side are partially sucked to the combustion chamber due to the suction of the bottom circulating fan, and when the grain and impurities are accumulated in a large amount, the bottom circulating fan duct is blocked, the air volume of the circulating fan is reduced, the energy consumption of the drying tower is increased, and the current solution is to close the drying tower once a day, and the operator enters the tower to clean, which consumes a lot of time, and thus reduces the drying efficiency of the drying tower. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide an internal heating continuous grain drying tower and working method, which avoids manual cleaning in the tower, saves time and labor cost.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme:

[0006] In the first aspect, the embodiments of the present application provide an internal heating continuous grain drying tower, which comprises a tower body, an angle box is arranged in the tower body, one side of the angle box is a combustion side and the other side is a settlement side, a top induced draft fan is arranged at the top of the settlement side, a circulating air duct is arranged at the bottom of the angle box, a circulating fan is installed in the circulating air duct, a grain collecting hopper is arranged at the bottom of the settlement side and the combustion side, the grain collecting hopper is provided with a grain level detection element, the height of the grain level detection element is lower than that of the circulating air duct, and the grain outlet at the bottom of the grain collecting hopper corresponds to the grain inlet end of a conveying mechanism.

[0007] Optionally, the grain collecting hopper at the bottom of the settlement side adopts an inverted conical funnel structure, the grain collecting hopper is fixedly connected with the tower body, and the bottom of the grain collecting hopper is provided with a grain outlet.

[0008] Optionally, the grain collecting hopper at the bottom of the combustion side adopts an inverted conical funnel structure, the grain collecting hopper is fixedly connected with the tower body, and the bottom of the grain collecting hopper is provided with a grain outlet.

[0009] Optionally, the conveying mechanism at the grain outlet of the grain collecting hopper of the settlement side adopts a screw conveyor.

[0010] Optionally, the conveying mechanism at the grain outlet of the grain collecting hopper of the combustion side adopts a screw conveyor.

[0011] Optionally, the material level detection element adopts a rotating resistance type material level sensor.

[0012] Optionally, the tower body part corresponding to the combustion side is provided with a combustion side access door.

[0013] Optionally, the tower body part corresponding to the settling side is provided with a settling side access door.

[0014] Optionally, the circulating fan is arranged at the end of the circulating channel close to the settling side.

[0015] In a second aspect, embodiments of the present application provide a working method of the internal heat continuous grain drying tower: the top induced draft fan and the circulating fan work to drive the hot air to flow in the internal circulation in the settling side, the combustion side and the corner box, and the grain in the corner box is dried; when the material level detection element installed on the collecting hopper detects that the material level in the collecting hopper reaches the set material level, the corresponding conveying mechanism is started, and the conveying mechanism sends the grain dropped from the collecting hopper out of the tower body.

[0016] The present application has the following beneficial effects:

[0017] The internal heat continuous grain drying tower of the present application is provided with the collecting hopper at the bottom of the settling side and the combustion side, the collecting hopper is provided with the material level detection element, the bottom grain outlet of the collecting hopper corresponds to the feeding end of the conveying mechanism, and since the height of the material level detection element is lower than the height of the circulating air duct, when the material level height in the collecting hopper reaches the material level detection element, the grain discharged from the grain outlet can be sent out by the conveying mechanism, so that the material level in the collecting hopper will not exceed the height of the material level detection element, the large amount of grain and impurities accumulated to block the circulating fan and the circulating air duct are avoided, the energy consumption of the drying tower is reduced, at the same time, the staff does not need to enter the tower for cleaning, the time for manual cleaning is saved, the drying efficiency of the drying tower is improved, and the labor cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation on the present application.

[0019] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0020] Figure 2 is a front view of the overall structure of embodiment 1 of the present application;

[0021] Figure 3 is an A-direction sectional view of the present application;

[0022] Figure 4 is a C-direction sectional view of the present application;

[0023] Figure 5 is a top view of the whole structure of the embodiment 1 of the present application;

[0024] Figure 6 is a B sectional view of the embodiment 1 of the present application; Figure 5

[0025] Wherein, 1. tower body, 2. top induced draft fan, 3. circulating fan, 4. settling side grain collector, 5. first conveying mechanism, 6. second conveying mechanism, 7. combustion side grain collector, 8. corner box, 9. combustion side access door, 10. settling side access door, 11. first grain level detection element, 12. second grain level detection element. DETAILED DESCRIPTION

[0026] Embodiment 1

[0027] The embodiment provides an internal heating continuous grain drying tower, as shown in the drawing, comprising a tower body 1, wherein the tower body 1 is internally provided with a corner box 8, the corner box 8 is provided with a grain inlet at the top, which is used for adding the grain to be dried into the corner box 8, the bottom of the corner box 8 is provided with a grain discharge mechanism, which is used for discharging the dried grain from the inside of the corner box 8, a plurality of gas flow channels are arranged in the corner box 8, the space outside the gas flow channels is used for filling the grain to be dried, hot air flows through the gas flow channels to dry the grain to be dried, the corner box and the grain inlet at the top and the grain discharge mechanism at the bottom thereof can adopt the prior art, and the specific structure is not described in detail herein. Figures 1-6 The space in the tower body on one side of the corner box 8 is a combustion side, which is used for forming hot air with high temperature, and the space in the tower body on the other side of the corner box 8 is a settling side.

[0028] The top of the tower body corresponding to the settling side is provided with a top induced draft fan 2, which is used for generating air flow from the inside of the tower body to the outside.

[0029] Preferably, the top of the tower body 1 corresponding to the settling side is provided with two top induced draft fans 2 arranged side by side.

[0030] The bottom of the corner box 8 penetrates through a circulating air duct, the circulating air duct is provided with a circulating fan 3, and the circulating fan 3 is used for generating air flow from the settling side to the combustion side, so that the waste heat of the high-temperature hot air is utilized, and the energy consumption is reduced.

[0031] In the embodiment, in order to avoid damage of the high-temperature gas in the combustion side to the circulating fan, the circulating fan 3 is arranged at the end of the circulating air duct close to the settling side, so that the circulating fan 3 is located at the lower part of the settling side.

[0032]

[0033] ​​In the embodiment, the circulating fan 3 generates air flow from the deposition side to the outside of the tower body, the circulating fan 3 generates air flow from the deposition side to the combustion side, the circulating fan 3 and the top induced draft fan 2 work together to enable the gas to circulate between the combustion side, the gas flow channel in the angular box 8 and the deposition side, the air flow in the gas flow channel of the angular box 8 flows from the combustion side to the deposition side, the air flow in the circulating air duct flows from the deposition side to the combustion side, and when the high-temperature gas flows through the gas flow channel of the angular box 8, the grain accumulated outside the gas flow channel can be dried.

[0034] Further, the bottom of the angular box 8 is provided with two circulating air ducts, and correspondingly, two circulating fans 3 are provided.

[0035] In the embodiment, the bottom of the gas flow channel is not provided with a side wall, and the bottom surface of the gas flow channel is exposed to the grain to be dried. When the air flow passes through the gas flow channel, the grain is easily taken out from the air outlet end of the gas flow channel and accumulated on the deposition side, thereby forming falling grain on the deposition side. At the same time, due to the action of the circulating fan 3, the grain and impurities falling on the deposition side are easily sucked to the combustion side through the circulating air duct, thereby forming blown-in grain on the combustion side. When a large amount of grain and impurities are accumulated, the bottom circulating fan air duct is blocked, the air volume of the circulating fan is reduced, and the energy consumption of the drying tower is increased.

[0036] In order to solve the above problems, in the embodiment, a deposition side grain collecting hopper 4 is arranged at the bottom of the deposition side, the deposition side grain collecting hopper 4 is fixedly connected with the tower body 1, a combustion side grain collecting hopper 7 is arranged at the bottom of the combustion side, and the combustion side grain collecting hopper 7 is fixedly connected with the tower body 1.

[0037] The deposition side grain collecting hopper 4 and the combustion side grain collecting hopper 7 both adopt an inverted conical structure for collecting grain and impurities, and the bottom of each of the deposition side grain collecting hopper 4 and the combustion side grain collecting hopper 7 is provided with a grain outlet.

[0038] A first grain level detection element 11 is mounted on the deposition side grain collecting hopper 4 for detecting the grain level in the deposition side grain collecting hopper 4, and a second grain level detection element 12 is mounted on the combustion side grain collecting hopper 7 for detecting the grain level in the combustion side grain collecting hopper.

[0039] The mounting height of each of the first grain level detection element 11 and the second grain level detection element 12 is lower than the height of the bottom of the circulating air duct.

[0040] In the embodiment, each of the first grain level detection element 11 and the second grain level detection element 12 adopts an existing anti-rotation type material level sensor, which can be obtained by using existing equipment, and the specific structure thereof will not be described in detail. The anti-rotation type material level sensor has a component that can be actively rotated. When the grain level reaches the anti-rotation type material level sensor, the grain can prevent the rotation of the component, thereby identifying the grain level.

[0041] The first grain level detection element 11 and the second grain level detection element 12 are connected with the control system and can send signals to the control system.

[0042] The bottom discharge port of the settling side grain collecting hopper 4 corresponds to the feeding end of the first conveying mechanism 5, and the bottom discharge port of the combustion side grain collecting hopper 7 corresponds to the feeding end of the second conveying mechanism 6.

[0043] In this embodiment, the first conveying mechanism 5 and the second conveying mechanism 6 are both auger conveyors connected with the control system. The feeding pipe of the first conveying mechanism 5 is connected to the bottom discharge port of the settling side grain collecting hopper 4, and the feeding pipe of the second conveying mechanism 6 is connected to the bottom discharge port of the combustion side grain collecting hopper 7.

[0044] Further, the corresponding tower body on the settling side is provided with a settling side manhole 10, which facilitates the workers to enter the settling side space in the tower body for maintenance. The corresponding tower body on the combustion side is provided with a combustion side manhole 9, which facilitates the workers to enter the combustion side space in the tower body for maintenance.

[0045] The remaining structure of the internal heat continuous grain drying tower can adopt the existing technology, which will not be described in detail here.

[0046] Embodiment 2

[0047] The embodiment provides a working method of the internal heat continuous grain drying tower described in embodiment 1.

[0048] The grain to be dried is placed in the corner-shaped box 8, the grain is filled in the outer space of the gas flow channel in the corner-shaped box 8, the top induced draft fan 2 and the circulating fan 3 work, the high-temperature hot air in the combustion side enters the gas flow channel of the corner-shaped box, and the grain is dried, the gas flowing out of the gas flow channel enters the settling side, and under the action of the circulating fan 3, the air in the settling side enters the combustion side through the circulating flow channel, so that the waste heat is reused.

[0049] After the grain in the corner-shaped box 8 is dried, the grain is discharged from the corner-shaped box 8 through the unloading mechanism.

[0050] When the settling side and / or the combustion side bottom grain collecting hopper is installed with a blocking type level sensor, the grain level in the grain collecting hopper reaches the set grain level, and the corresponding auger conveyor is started, and the auger conveyor sends the grain falling from the grain collecting hopper out of the tower body.

[0051] The grain drying tower of the embodiment can send out the grain discharged from the grain outlet by the conveying mechanism when the grain level in the grain collecting hopper reaches the grain level detection element, so that the grain level in the grain collecting hopper will not exceed the height of the grain level detection element, avoiding the blockage of the circulating fan and the circulating air duct after the large accumulation of grain and impurities, avoiding the increase of the energy consumption of the drying tower, and also avoiding the need of the staff to enter the tower for cleaning, saving the time for manual cleaning, improving the drying efficiency of the drying tower, and reducing the labor cost.

[0052] The above merely provides preferred embodiments of the present application, but is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An internally heated continuous grain drying tower, comprising a tower body, an angular box disposed within the tower body, one side of the angular box being a combustion side and the other side a settling side, a top induced draft fan disposed at the top of the settling side, and a circulating air duct disposed at the bottom of the angular box, the circulating air duct being equipped with a circulating fan, characterized in that, Both the settling side and the combustion side are equipped with grain collection hoppers at the bottom. Each grain collection hopper is equipped with a grain level detection element. The height of the grain level detection element is lower than that of the circulating air duct. The grain level detection element adopts a rotary resistance type material level sensor. The grain outlet at the bottom of the grain collection hopper corresponds to the grain inlet of the conveying mechanism. The grain collection hopper at the bottom of the settling side adopts an inverted conical funnel structure. The grain collection hopper is fixedly connected to the tower body, and the bottom of the grain collection hopper is provided with a grain outlet. The grain collection hopper at the bottom of the combustion side adopts an inverted conical funnel structure. The grain collection hopper is fixedly connected to the tower body, and the bottom of the grain collection hopper is provided with a grain outlet. The circulating fan is located at the end of the circulating channel near the settling side.

2. The internally heated continuous grain drying tower as described in claim 1, characterized in that, The conveying mechanism at the grain outlet of the grain collection hopper on the settling side adopts an auger conveyor.

3. The internally heated continuous grain drying tower as described in claim 1, characterized in that, The conveying mechanism at the grain outlet of the grain collection hopper on the combustion side adopts an auger conveyor.

4. The internally heated continuous grain drying tower as described in claim 1, characterized in that, The tower section corresponding to the combustion side is equipped with a combustion side inspection door.

5. The internally heated continuous grain drying tower as described in claim 1, characterized in that, The tower section corresponding to the settlement side is equipped with a settlement side inspection door.

6. A method for operating the internally heated continuous grain drying tower according to any one of claims 1-5, characterized in that, The top induced draft fan and circulating fan work to drive hot air to circulate in the flow of the settling side, combustion side and corner box to dry the grain in the corner box. When the grain level detection element installed in the grain collection hopper at the bottom of the settling side and / or combustion side detects that the grain level in the grain collection hopper has reached the set grain level, the corresponding conveying mechanism is activated, and the conveying mechanism sends the grain falling from the grain collection hopper to the outside of the tower body.

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