CN111829322A - An efficient and environmentally friendly grain dryer - Google Patents

Abstract

The invention relates to the technical field of grain drying, and discloses a high-efficiency and environment-friendly grain dryer. It includes two drying boxes arranged symmetrically on the left and right, and a hot air chamber connected with the two drying boxes is arranged between the two drying boxes. The hot air chamber is connected to the drying medium through the air inlet box. The exhaust gas chamber is connected to the drying box, and the single exhaust gas chamber is connected to the exhaust fan through the air outlet box; the double-channel drying section adopts a mixed-flow structure, with air in the middle and air out on both sides, which can minimize heat loss and save energy in drying. The effect is obvious, coupled with the staggered arrangement of the variable-section air inlet angular boxes and air outlet angular boxes, so that the grains flow downward in an S-shape in the drying box, so that the grains and the drying hot air are fully contacted, the heating is more uniform, and the drying is carried out. Compared with the existing dryers, the efficiency and the quality after drying have been significantly improved.

Description

An efficient and environmentally friendly grain dryer

technical field

The invention relates to the technical field of grain drying, in particular to an efficient and environment-friendly grain dryer.

Background technique

In recent years, my country's grain mechanized drying has been rapidly developed and applied. Grain dryers have been widely used in grain storage, processing, distribution enterprises, cooperatives and large grain growers, which effectively solves the process of grain storage and storage. Losses caused by mildew due to lack of time to dry. The existing grain drying equipment in our country is mainly hot air drying, with two types of high temperature continuous type and low temperature circulating type. loss and play a key role in ensuring national food security.

With the continuous expansion of the grain drying market and the continuous extension of the user group, the performance and functional requirements of the dryer are constantly improving: due to the improvement of the degree of harvest mechanization, the shortening of the harvest period and the improvement of the processing capacity of the dryer, the drying The development of large-scale dryers has become a trend; due to the rush to harvest and seeds, the harvesting period is early, the original moisture after harvest is too high and the grains are immature, which puts forward higher requirements for the precipitation efficiency and drying performance of the dryer; engaged in grain purchase The proportion of customer groups in and trade has increased, requiring dryers not only to dry rice, but also to dry various materials such as wheat, corn, and beans. "One machine for multiple purposes" has become a development direction.

At present, the grain dryers used in the southern and central regions of my country are developed on the basis of the Japanese low-temperature circulating grain dryer technology. Quality, germination rate and edible taste are not affected. However, for high-moisture materials such as corn and wheat, there are defects such as low efficiency, high energy consumption, and increased breakage rate after drying, which cannot meet the actual needs of the main corn and wheat producing areas in central my country. Therefore, a new model is needed to solve the practical problems encountered in the existing grain drying process.

SUMMARY OF THE INVENTION

Aiming at the problems of low drying efficiency and high energy consumption of the above-mentioned existing grain dryers, an efficient and environmentally friendly grain dryer that can solve or partially solve the above technical problems is provided. After drying, it flows downward in an S shape, and the drying medium (hot air) is also in the form of S-shaped cross-flow bidirectional ventilation in the oven, so that the grain and the drying medium (hot air) can be fully contacted, ensuring the uniformity of grain drying. Thus, the drying efficiency is improved and the energy consumption is reduced.

In order to solve the above-mentioned technical problems, the present invention proposes an efficient and environmentally friendly grain dryer, comprising:

The double-channel drying part is used for drying grains, including two drying boxes arranged symmetrically on the left and right, and a hot air chamber connected with the two drying boxes is arranged between the two drying boxes. The air box is connected with a drying medium, and the side of the single drying box away from the hot air chamber is provided with an exhaust gas chamber that communicates with the drying box, and the single exhaust gas chamber is respectively connected with the exhaust fan through the air outlet box;

The storage part, which is located above the drying part and communicated with the top of the drying part, is used to store the grains to be dried;

The discharge part is located below the drying part and communicated with the bottom of the drying part, and is supported by the base to discharge the grains dried by the double-channel drying part;

The feeding and discharging system, which is communicated with the discharging mechanism, is used to feed the grains to be dried to the storage part, or to circulate the grains from the discharging mechanism to the dryer for re-drying or direct discharge.

Further, the top and bottom of a single drying box are both open structures, which are composed of several drying layers with upper and lower openings. The air inlet angular layer includes a plurality of uniformly arranged air inlet angular boxes, the air outlet angular layer includes a plurality of uniformly arranged air outlet angular boxes, and the gap between the air inlet angular box and the air outlet angular box is All are staggered.

Further, the single air inlet angular box and the air outlet angular box are both large and small head structures with variable cross-sections, and both are closed with a large head opening and a small head, and their cross-sections are all inverted "V" shapes with bottom openings;

The large end of the air inlet angular box is fixed on the side plate close to the hot air chamber, the small end is fixed on the side plate close to the exhaust gas chamber, and the large end of the air outlet angle box is fixed on the side close to the exhaust gas chamber. The side plate and the small head are fixed on the side plate close to the side of the hot air chamber, and the two side plates are respectively provided with openings corresponding to the large end of the air inlet angular box and the large end of the air outlet angular box.

Further, the discharging part includes:

Two sets of discharge guide assemblies, located at the bottom of the two drying boxes respectively, include two pairs of collecting plates arranged perpendicular to the length direction of the air inlet angular box and the air outlet angular box, and each pair of the collecting plates is formed with a A collection tank with an opening at the bottom, an inverted "V"-shaped baffle is arranged directly above a single collection tank, and a plurality of bottom openings are formed between the collection plate and the inverted "V"-shaped baffle "V" groove;

The discharging assembly includes a discharging motor, a plurality of discharging wheels, a plurality of tensioning wheels and a chain respectively arranged on both sides of the bottom opening of the collecting trough, and the discharging motor is fixed on the side plate of the discharging part, The output end is provided with a drive wheel, the discharge wheel is composed of a rotating shaft and an impeller, and the discharge wheels are located under the "V"-shaped groove and just block the bottom opening of the "V"-shaped groove. One end of the wheel is provided with a sprocket, and the drive wheel is connected with a plurality of tensioning wheels and a plurality of sprockets through a chain drive;

A pair of discharge hoppers, respectively located below the two sets of discharge guide assemblies, are used to collect the grains discharged from the bottom opening of the collecting trough through the discharge assemblies;

The discharge auger is connected with the bottom of the two discharge hoppers, one end of which is provided with an auger motor, and the other end is connected with the feeding and discharging system, which is used to transport the grains from the feeding and discharging system.

Further, cavities connected to the exhaust gas chamber are respectively provided in the discharge part and on both sides of the two sets of discharge guide assemblies, and a number of adjustable openings are respectively provided on the inner side plate of the cavity to pass through a number of holes. Adjustable openings connect the discharge part with the waste gas chamber, and are used to remove impurities from the grains in the discharge part.

Further, the feeding and discharging system includes an elevator, a feeding chute and a distributor;

One side of the bottom of the elevator is provided with a feeding hopper, and the other side is communicated with the discharge port of the discharge part, that is, communicated with the discharge auger;

One end of the feeding chute is communicated with the discharge port on the top of the elevator, and the other end runs through the center of the top plate of the storage part to the interior of the storage part. The feeding chute is provided with a discharge hopper, and the bottom of the discharge hopper There is a discharge pipe, and there is also a movable flap between the feed chute and the discharge hopper), which is used to control the grain entering into the dryer or out of the dryer;

The position of the distributor corresponds to the discharge end of the feeding chute, and is used for evenly distributing the grains from the feeding chute in the dryer.

Further, the feeding chute includes a feeding oblique tee, a discharging oblique tee, and a chute;

The feeding inclined tee and the discharging inclined tee are connected by a sliding pipe, and the feeding inclined tee and the discharging inclined tee are respectively composed of a straight pipe section and an inclined branch pipe. The straight pipe section of the feeding inclined tee The top of the hoist is connected with the discharge end of the elevator, the bottom is connected with the discharge hopper, and the movable flap is arranged at the bottom of the feeding inclined three-way straight pipe section;

The bottom of the discharge inclined three-way straight pipe section extends into the interior of the storage part through a guide hopper, and the guide hopper is located above the distributor.

Further, a dust removal fan is arranged on the top of the straight pipe section of the discharging inclined three-way, and a plurality of baffles are arranged in opposite directions inside, and the straight pipe section of the discharging inclined three-way is provided with corresponding baffles. Several air intake holes.

Further, the distributor is composed of a frequency conversion motor, a bulk material tray and a PLC controller, the frequency conversion motor is fixed on the center of the top plate of the storage part through a base plate, and the bulk material tray is connected to the output end of the frequency conversion motor through a rotating shaft and The bulk material tray is located just below the discharge end of the feeding chute, and the PLC controller is electrically connected to the frequency conversion motor for controlling the speed change of the frequency conversion motor.

Further, the bulk material tray is of a disc structure, the center of which is recessed inward, and a plurality of grain-discharging claws are evenly arranged along the periphery of the bulk material tray.

Compared with the prior art, the advantages of the present invention are:

1. The dual-channel drying section adopts a mixed-flow structure, with air inlet in the middle and air outlet on both sides, which can minimize heat loss, and the drying energy saving effect is obvious. The staggered arrangement makes the grains flow downward in an S shape in the drying box, so that the grains are fully contacted with the drying hot air, the heating is more uniform, and the drying efficiency and quality after drying are significantly improved compared with the existing drying models;

2. Through the setting of the dust removal fan and the structural design of multiple inclined baffles and several air inlet holes on the discharge inclined tee, the multiple baffles make the grain change direction multiple times during the feeding process of the grain. At the same time, the dust removal fan performs air extraction, and several air inlet holes enter the air to form an upward air duct, which can take away most of the light impurities in the incoming grains to achieve a good impurity removal effect, that is, environmental protection, and the safety performance of the equipment is significantly improved. ;

3. Compared with the prior art, the grain dryer involved in the present application has large operational flexibility and a wide range of applications, which can not only dry paddy with high quality, but also meet the high-efficiency requirements of different materials such as high-moisture corn, wheat, and rapeseed. Precipitation needs, adapt to the diversified drying needs of different regions, different users, and different grain varieties.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the front structure perspective view of the grain dryer of the present invention,

Fig. 2 is the rear structure perspective view of the grain dryer of the present invention,

FIG. 3 is a schematic structural diagram of the discharge part 4 and the feeding and discharging system 6,

FIG. 4 is a schematic structural diagram of the discharge part 4 with the discharge hopper 43 removed,

Fig. 5 is a partial enlarged view of I in Fig. 4,

Fig. 6 is a schematic structural diagram of the discharge portion 4 after removing the front side plate of the discharge portion 4 on the basis of Fig. 4,

Fig. 7 is a partial enlarged view of II in Fig. 6,

FIG. 8 is a schematic structural diagram of the dual-channel drying section 1,

Fig. 9 is a schematic view of the structure after removing the 1/4 box of one side of the drying box 11 on the basis of Fig. 8,

FIG. 10 is a schematic structural diagram of the air inlet angle box 112,

Fig. 11 is the structural representation of the feed chute 62,

FIG. 12 is a schematic structural diagram of the discharge inclined tee 622 after removing part of the side plate;

Figure 13 is a schematic structural diagram of the distributor 63,

The reference numbers are as follows:

Double-channel drying section 1, drying box 11, drying layer 111, air inlet angular box 112, air outlet angular box 113, hot air chamber 12, air inlet box 121, waste gas chamber 13, air outlet box 131, exhaust fan 2, storage Retention part 3, discharge part 4, discharge guide assembly 41, collecting plate 411, collecting groove 412, inverted "V"-shaped guide plate 413, "V"-shaped groove 414, discharge assembly 42, discharge Motor 421, discharge wheel 422, tensioner 423, chain 424, drive wheel 425, sprocket 426, discharge hopper 43, discharge auger 44, auger motor 45, cavity 46, base 5, feeding and discharging system 6 , elevator 61, feeding chute 62, feeding inclined tee 621, discharging inclined tee 622, chute 623, guide hopper 624, baffle 625, air inlet 626, distributor 63, frequency conversion motor 631 , Bulk material tray 632, seat plate 633, shaft 634, grain allocation claw 635, feed hopper 64, discharge hopper 65, discharge pipe 66, dust removal fan 67.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention. .

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. Based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in use, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operates in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhanging" etc. do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arranged", "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Please refer to FIG. 1 to FIG. 13 , the present invention provides a high-efficiency and environment-friendly grain dryer, including a dual-channel drying section 1, a storage section 3, a discharge section 4, and a feeding and discharging system 6;

As shown in FIG. 8 and FIG. 9 , the double-channel drying section 1 is used for drying grains, and includes two drying boxes 11 arranged symmetrically on the left and right, and hot air connected to the two drying boxes 11 is arranged between the two drying boxes 11 respectively. Room 12, the hot air chamber 12 is connected to the drying medium through the air inlet box 121. The side of the single drying box 11 away from the hot air chamber 12 is provided with an exhaust gas chamber 13 that communicates with the drying box 11. The fan 2 is connected. It should be noted that the above-mentioned drying medium is hot air when it enters the drying box 11 from the hot air chamber 12, and after drying the grains in the drying box 11, it becomes cold air that collects and the waste gas chamber 13 passes through the exhaust fan 2 discharge;

The top and bottom of the single drying box 11 are both open structures and consist of several drying layers 111 that are opened up and down. These drying layers 111 are assembled from top to bottom to form a complete drying box 11. The air inlet angular layer and the air outlet angular layer, the gap between the air inlet angular layer and the air outlet angular layer should not be less than 30mm. The air outlet angular layer includes a plurality of uniformly arranged air outlet angular boxes 113, and the air inlet angular boxes 112 included in each air inlet angular layer and the air outlet angular boxes included in each air outlet angular layer. The gap between the boxes 113 should not be less than 150mm, and the air inlet angular boxes 112 and the air outlet angular boxes 113 are arranged in a staggered manner. This structural design can realize the S-shaped downward flow of grains in the drying box. ;

As shown in FIG. 10 , a single air inlet angular box 112 has a large and small head structure with variable cross-section, and the large head is open and the small head is closed. The structure of the air outlet angular box 113 is the same as that of the air inlet angular box 112, and its cross-section is the bottom The inverted "V" shape of the opening can guide the grain to a certain extent. Considering the smoothness of the grain after entering the drying box 11, the inverted "V" of the air inlet angular box 112 and the air outlet angular box 113 The apex angle of the cross-section of the mold is not easy to be too large, and is preferably 30° to 50°. Further, in order to facilitate the angle measurement of actual manufacturing, the above-mentioned apex angles are preferably 30° and 45°;

The large end of the air inlet angular box 112 is fixed on the side plate near the hot air chamber 12, the small end is fixed on the side plate near the exhaust gas chamber 13, and the large end of the air outlet angular box 113 is fixed on the side near the exhaust gas chamber 13. The side plate and the small end of the side are fixed on the side plate close to the side of the hot air chamber 12, and the two side plates are respectively provided with openings corresponding to the large end of the air inlet angular box 112 and the large end of the air outlet angular box 113, Through these openings, each air inlet angular box 112 is communicated with the hot air chamber 12 respectively, and each air outlet angular box 113 is communicated with the exhaust gas chamber 13 respectively. The large ends of the box 113 are respectively provided with outwardly folded edges;

Based on the consideration of uniformity, the entire stroke of the drying medium (hot air) should not be too long, that is to say, the length of the air inlet angular box 112 and the air outlet angular box 113 should not be too long. The length design of 112 and the air outlet angle box 113 should not exceed 2 meters, preferably 1 to 1.5 meters;

The storage part 3 is located above the double-channel drying part 1 and communicated with the top of the double-channel drying part 1, and is used to store the grains to be dried. the stability of the reservoir 3;

The discharge part 4 is located below the dual-channel drying part 1 and communicates with the bottom of the dual-channel drying part 1, and is supported by the base 5, and is used to discharge the grains dried by the dual-channel drying part 1, including two groups of rows. Material guide assembly 41, discharge assembly 42, a pair of discharge hoppers 43 and discharge auger 44;

As shown in FIG. 6 , the two sets of discharge guide assemblies 41 are located at the bottom of the two drying boxes 11 respectively, and include two pairs of collecting plates 411 arranged perpendicular to the length direction of the air inlet angular box 112 and the air outlet angular box 113 . A collecting trough 412 with an opening at the bottom is formed on the collecting plate 411, and an inverted "V"-shaped baffle 413 is arranged directly above a single collecting trough 412. The collecting plate 411 and the inverted "V"-shaped baffle 413 A plurality of "V"-shaped grooves 414 with open bottoms are formed therebetween;

As shown in FIG. 4 to FIG. 6 , the discharge assembly 42 includes a discharge motor 421 , a plurality of discharge wheels 422 , a plurality of tension wheels 423 and a chain 424 respectively disposed on both sides of the bottom opening of the collecting trough 412 . The discharge motor 421 is fixed on the side plate of the discharge part 4, and its output end is provided with a driving wheel 425. The discharge wheel 422 is composed of a rotating shaft and an impeller. The bottom opening of the groove 414 is blocked. Of course, a certain gap should be maintained between the discharge wheel 422 and the collecting plate 411 forming the "V"-shaped groove 414 and the inverted "V"-shaped deflector 413, so as to facilitate the grain removal. To discharge smoothly, one end of a single discharge wheel 422 is provided with a sprocket 426, and the driving wheel 425 is connected with the multiple tensioning wheels 423 and the multiple sprockets 426 through the chain 424. The position of the multiple tensioning wheels 423 can be determined according to the In order to facilitate the adjustment of the tightness of the chain 424, the individual tensioning pulleys 423 can also be set to be adjustable in position;

As shown in FIG. 3 , the discharge hoppers 43 are respectively located below the two sets of discharge guide assemblies 41 for collecting the grains discharged from the bottom opening of the collecting trough 412 through the discharge assemblies 42;

The discharging auger 44 communicates with the bottoms of the two discharging hoppers 43 respectively, one end of which is provided with an auger motor 45, and the other end is communicated with the feeding and discharging system 6 for conveying grains from the feeding and discharging system 6;

In the discharge part 4, on both sides of the two sets of discharge guide assemblies 41, there are also cavities 46 connected with the exhaust gas chamber 13, respectively. Adjustable openings connect the discharge part 4 with the waste gas chamber 13 for removing impurities from the grains in the discharge part 4, and the waste gas chamber 13 is exhausted by the exhaust fan 2 to form the discharge part 4 to the waste gas chamber 13. The air duct can take away part of the impurities in the grains of the discharge part 4;

As shown in FIG. 2 and FIG. 3 , the feeding and discharging system 6 is communicated with the discharging part 4 for feeding the grains to be dried to the storage part 3 or circulating the grains from the discharging part 4 into the dryer. Carry out re-drying or direct discharge, including elevator 61, feeding chute 62 and distributor 63;

One side of the bottom of the elevator 61 is provided with a feeding hopper 64. The feeding hopper 64 is used to receive newly added grains to be dried, and the other side is communicated with the discharge auger 44. The grains from the dryer 44 and the newly added grains to be dried are transported to the feed chute 62 located at the top of the dryer;

One end of the feeding chute 62 is communicated with the discharge port at the top of the elevator 61, and the other end penetrates from the center of the top plate of the storage part 3 to the interior of the storage part 3. The feeding chute 62 is provided with a discharge hopper 65, and the discharge hopper The bottom of 65 is provided with a discharge pipe 66, and between the feed chute 62 and the discharge hopper 65 is also provided with a movable flap, which is used to control the grain entering into the dryer or discharging it out of the dryer;

As shown in FIG. 11 , as a preferred solution, the feed chute 62 includes a feed tee 621, a discharge tee 622 and a chute 623; the feed tee 621 and the discharge tee 622 pass through the chute 623 connection, the feeding inclined tee 621 and the discharging inclined tee 622 are respectively composed of straight pipe section and inclined branch pipe, and the angle between the straight pipe section and the inclined branch pipe is not less than 42°. The straight pipe sections of the discharge inclined tee 622 should be vertically assembled, the inclined branch of the feeding inclined three-way 621 is directed downward, the inclined branch of the discharge inclined three-way 622 is directed upward, and the angle between the chute 623 and the horizontal plane It should be the same as the angle between the straight pipe section and the inclined branch pipe;

The top of the straight pipe section of the feeding inclined tee 621 is connected with the discharge end of the elevator 61, and the bottom is connected with the discharge hopper 65. The movable flaps used to control the grains entering the dryer or discharging outside the dryer are arranged in the feeder. The bottom of the straight pipe section of the inclined tee 621;

The bottom of the straight pipe section of the discharge oblique tee 622 extends into the interior of the storage part 3 through a guide hopper 624, the guide hopper 624 is located above the distributor 63, and the guide hopper 624 can realize the stable entry of grain into the dryer in strands;

As shown in Fig. 12, based on the unsatisfactory effect of removing impurities when the grain dryer is feeding grain, a dust removal fan 67 is provided at the top of the straight pipe section of the inclined tee 622, and a plurality of baffles 625 are arranged inside and opposite to each other, and The straight pipe section of the discharge inclined tee 622 is provided with several air inlet holes 626 corresponding to the baffles 625, so that during the feeding process of the grains, the multiple baffles 625 make the grains flow in multiple directions, and at the same time The dust-removing fan 67 draws air, and several air inlet holes 626 enter the air to form an upward air duct, which can take away most of the light impurities in the fed grains and achieve a good impurity removal effect;

The above-mentioned feeding oblique tee 621, discharging oblique tee 622 and sliding pipe 623 are all rectangular air duct structures, all of which are connected by flanges;

As shown in Figure 13, the position of the distributor 63 corresponds to the discharge end of the feeding chute 62, and is used to distribute the grains from the feeding chute 62 evenly in the dryer. 632 and a PLC controller, the frequency conversion motor 631 is fixed on the center of the top plate of the storage part 3 through the seat plate 633, the middle part of the seat plate 633 is bent inward to form an upward raised platform, and the frequency conversion motor 631 is assembled on the raised platform;

The bulk material tray 632 is connected to the output end of the variable frequency motor 631 through the rotating shaft 634 and is located just below the discharge end of the feeding chute 62. A plurality of grain-discharging claws 635 are evenly arranged around the edge, and the grain-discharging claw 635 is preferably a double-bending structure, and its cross-section is "Z" type;

The PLC controller is electrically connected with the frequency conversion motor 631 to control the speed change of the frequency conversion motor 631. The rotation of the frequency conversion motor 631 drives the bulk material tray 632 to rotate, and the grains falling into the bulk material tray 632 will move along the bulk material tray 632. In the tangential direction, the gap between the two adjacent grain-distributing claws 635 is scattered into the dryer, and the PLC controller controls the speed change of the frequency conversion motor 631, so that the bulking tray 632 disperses grain at different speeds, so that the grain The landing point in the dryer tends to be on the same plane, which can effectively alleviate the problem of automatic grading of grains and achieve the purpose of uniform cloth.

Working principle: the grains to be dried enter the elevator 61 from the feeding hopper 64, and are transported to the top of the feeding inclined tee 621 of the feeding chute 62 by the elevator 61, and are discharged from the discharging inclined tee 622 to the distributor. The bulk material tray 632 of 63, the bulk material tray 632 is driven by the frequency conversion motor 631 at different speeds, so that the grains enter the dual-channel drying section 1 evenly, and the external drying medium (hot air) enters the hot air chamber 12 from the air inlet box 121. , the drying medium (hot air) enters the drying box 11 on both sides laterally, and is heated and takes away moisture after contacting the grain. The dried grain is discharged from the bottom of the drying box 11 to the discharge part 4, and the dried grain The drying medium (and the wind) is collected in the waste gas chamber 13, and is extracted and discharged by the exhaust fan 2;

The dried grains are discharged from the bottom opening of the collecting trough 412 to the corresponding discharge hoppers 43 through the plurality of discharge wheels 422 , and then the dried grains are conveyed by the discharge auger 44 connected with the discharge hoppers 43 . To the bottom of the elevator 61, the elevator 61 is lifted to the top of the feeding inclined tee 621 of the feeding chute 62. If the grain drying is qualified, the movable flap between the feeding chute 62 and the discharge hopper 65 will be controlled. The dried grains are discharged from the discharge hopper 65 and collected; if the drying is unqualified, the grains are re-dried according to the above-mentioned process, and the purpose of grain drying can be achieved by such a cycle.

On the basis of in-depth study of grain drying characteristics and precipitation law, the invention optimizes and combines main process parameters such as drying time, slowing time, drying medium temperature, etc. in combination with actual production needs, and changes the "capacity" of the existing model. It has the disadvantages of high consumption, low efficiency, and single use", and has the advantages of "high efficiency, quality assurance, energy saving and low consumption, and one machine for multiple purposes". Compared with the main models in the existing market, it can save energy by more than 20%, increase drying efficiency by 35%, reduce pollutant emissions by more than 25%, and can effectively improve the quality of grain after drying.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. An efficient environment-friendly grain dryer is characterized by comprising:

the double-channel drying part (1) is used for drying grains and comprises two drying boxes (11) which are arranged in a bilateral symmetry mode, a hot air chamber (12) which is communicated with the two drying boxes (11) is arranged between the two drying boxes (11), the hot air chamber (12) is externally connected with a drying medium through an air inlet box (121), an exhaust gas chamber (13) communicated with the drying boxes (11) is arranged on one side, far away from the hot air chamber (12), of each drying box (11), and the exhaust gas chamber (13) is connected with an exhaust fan (2) through an air outlet box (131);

the storage part (3) is positioned above the double-channel drying part (1), is communicated with the top of the double-channel drying part (1), and is used for caching grains to be dried;

the discharging part (4) is positioned below the double-channel drying part (1), is communicated with the bottom of the double-channel drying part (1), is supported by the base (5), and is used for discharging grains dried by the double-channel drying part (1);

and the feeding and discharging system (6) is communicated with the discharging part (4) and is used for feeding the grains to be dried to the storage part (3) or circulating the grains from the discharging part (4) to the dryer for drying again or directly discharging.

2. The efficient and environment-friendly grain dryer as claimed in claim 1, wherein: singly the top and the bottom of drying cabinet (11) are open structure, constitute by a plurality of upper and lower open-ended drying layer (111), singly be equipped with air inlet horn shape layer and the air outlet horn shape layer of arranging from top to bottom in drying layer (111), air inlet horn shape layer includes a plurality of air inlet horn shape boxes (112) of evenly arranging, air outlet horn shape layer includes a plurality of air outlet horn shape boxes (113) of evenly arranging, be staggered arrangement between air inlet horn shape box (112) and air outlet horn shape box (113).

3. The efficient and environment-friendly grain dryer as claimed in claim 2, wherein: the single air inlet horn-shaped box (112) and the air outlet horn-shaped box (113) are both of a large-small head structure with variable cross sections, both are large-head open and small-head closed, and the cross sections are both inverted V-shaped with an open bottom;

the big end of the air inlet angle-shaped box (112) is fixed on the side plate close to one side of the hot air chamber (12), the small end of the air outlet angle-shaped box (113) is fixed on the side plate close to one side of the waste air chamber (13), the big end of the air outlet angle-shaped box is fixed on the side plate close to one side of the hot air chamber (12), and openings corresponding to the big end of the air inlet angle-shaped box (112) and the big end of the air outlet angle-shaped box (113) are respectively arranged on the two side plates.

4. The grain drier of claim 1, wherein the discharge part (4) comprises:

the two groups of discharging and flow guiding assemblies (41) are respectively positioned at the bottoms of the two drying boxes (11) and comprise two pairs of material collecting plates (411) which are arranged in the length direction of the air inlet horn-shaped box (112) and the air outlet horn-shaped box (113), each pair of material collecting plates (411) form a material collecting groove (412) with an opening at the bottom, an inverted V-shaped guide plate (413) is arranged right above a single material collecting groove (412), and a plurality of V-shaped grooves (414) with openings at the bottoms are formed between the material collecting plates (411) and the inverted V-shaped guide plates (413);

the discharging assembly (42) comprises a discharging motor (421), a plurality of discharging wheels (422), a plurality of tensioning wheels (423) and a chain (424), wherein the discharging wheels (422), the tensioning wheels (423) and the chain (424) are respectively arranged on two sides of a bottom opening of the collecting groove (412), the discharging motor (421) is fixed on a side plate of the discharging part (4), a driving wheel (425) is arranged at the output end of the discharging motor, the discharging wheels (422) are composed of rotating shafts and impellers, the discharging wheels (422) are respectively positioned below the V-shaped groove (414) and just block the bottom opening of the V-shaped groove (414), a chain wheel (426) is arranged at one end of each discharging wheel (422), and the driving wheel (425) is in transmission connection with the tensioning wheels (423) and the chain wheels (426);

a pair of discharge hoppers (43) which are respectively positioned below the two groups of discharge guide assemblies (41) and are used for collecting grains discharged from the bottom opening of the material collecting groove (412) through the discharge assemblies (42);

and the discharging auger (44) is respectively communicated with the bottoms of the two discharging hoppers (43), one end of the discharging auger is provided with an auger motor (45), and the other end of the discharging auger is communicated with the feeding and discharging system (6) and is used for conveying grains from the feeding and discharging system (6).

5. The efficient and environment-friendly grain dryer as claimed in claim 4, wherein: arrange material portion (4) in, be located two sets of row material water conservancy diversion subassembly (41) both sides and be equipped with cavity (46) by communicating with exhaust gas chamber (13) respectively, be equipped with a plurality of adjustable trompils on the interior curb plate of cavity (46) respectively, will arrange material portion (4) and exhaust gas chamber (13) intercommunication through a plurality of adjustable trompils for carry out the edulcoration to the cereal of arranging material portion (4).

6. An efficient and environment-friendly grain dryer as claimed in claim 1, wherein said feeding and discharging system (6) comprises a lifter (61), a feeding chute (62) and a distributor (63);

a feed hopper (64) is arranged on one side of the bottom of the hoister (61), and the other side of the bottom of the hoister is communicated with a discharge hole of the discharge part (4);

one end of the feeding chute (62) is communicated with a discharge hole in the top of the elevator (61), the other end of the feeding chute penetrates into the storage part (3) from the center of a top plate of the storage part (3), a discharge hopper (65) is arranged on the feeding chute (62), a discharge pipe (66) is arranged at the bottom of the discharge hopper (65), and a movable turning plate is arranged between the feeding chute (62) and the discharge hopper (65) and used for controlling grains to enter the dryer or be discharged out of the dryer;

the position of the distributing device (63) corresponds to the discharge end of the feeding chute (62) and is used for uniformly distributing the grains from the feeding chute (62) in the dryer.

7. The efficient and environment-friendly grain dryer as claimed in claim 6, wherein: the feeding chute (62) comprises a feeding inclined tee joint (621), a discharging inclined tee joint (622) and a chute (623);

the feeding inclined tee joint (621) and the discharging inclined tee joint (622) are connected through an elephant trunk (623), the feeding inclined tee joint (621) and the discharging inclined tee joint (622) respectively consist of a straight pipe section and an inclined branch pipe, the top of the straight pipe section of the feeding inclined tee joint (621) is connected with the discharging end of a lifting machine (61), the bottom of the straight pipe section of the feeding inclined tee joint (621) is communicated with a discharging hopper (65), and the movable turning plate is arranged at the bottom of the straight pipe section of the feeding inclined tee joint (621);

the bottom of the straight pipe section of the discharging inclined tee joint (622) extends into the interior of the storage part (3) through a material guide hopper (624), and the material guide hopper (624) is positioned above the distributing device (63).

8. The efficient and environment-friendly grain dryer as claimed in claim 7, wherein: the top of the straight pipe section of the oblique discharging tee joint (622) is provided with a dust removal fan (67), the interior of the straight pipe section of the oblique discharging tee joint (622) is provided with a plurality of baffle plates (625) in a crossed and opposite mode, and the straight pipe section of the oblique discharging tee joint (622) is provided with a plurality of air inlet holes (626) corresponding to the baffle plates (625).

9. The efficient and environment-friendly grain dryer as claimed in claim 6, wherein: distributing device (63) comprises inverter motor (631), bulk cargo dish (632) and PLC controller, inverter motor (631) are fixed in through bedplate (633) and reserve portion (3) roof center, bulk cargo dish (632) are connected and bulk cargo dish (632) are located feeding elephant trunk (62) discharge end under through pivot (634) and inverter motor (631)'s output, the PLC controller is connected with inverter motor (631) electricity for the rotational speed of control inverter motor (631) changes.

10. The efficient and environment-friendly grain dryer as claimed in claim 9, wherein: the bulk material dish (632) is the disc structure, and its center is inside sunken, is followed the edge a week of bulk material dish (632) is equipped with a plurality of grain claws (635) of dialling uniformly.

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