CN113758225B

CN113758225B - Grain drying-machine stoving case unloading device

Info

Publication number: CN113758225B
Application number: CN202111042633.5A
Authority: CN
Inventors: 张书宏; 叶新国; 张利
Original assignee: Hefei Sanwu Mechanical Co ltd
Current assignee: Hefei Sanwu Mechanical Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-11-25
Anticipated expiration: 2041-09-07
Also published as: CN113758225A

Abstract

The invention discloses a grain unloading device for a drying box of a grain dryer, which comprises: a box body; the screen plate is fixed in the box body and arranged at the upper part of the box body; the bottom frame is fixedly connected with the box body and arranged at the bottom of the box body; the guide rail is fixed at the lower part of the box body; the grain discharging component is arranged below the screen plate, two ends of the grain discharging component are fixed on the guide rail, the grain discharging component is also connected with the transmission component, the transmission component is also connected with the motor component, the motor component provides power, and the transmission component drives the grain discharging component to linearly slide up and down along the guide rail; the hot air dehydrates and dries the grains from the ventilation holes on the screen plate, the grain discharging component reciprocates up and down along the guide rail, the grains are discharged from the gap between the grain discharging component and the screen plate, the grain discharging process ensures that the grains have enough residence time in the drying section, and the drying effect is improved; no grain residue exists between the net plates, so that the workload of equipment cleaning and maintenance is reduced; the grain unloading process depends on the grain weight, and the breakage rate of the grain is reduced.

Description

Grain drying-machine stoving case unloading device

Technical Field

The invention belongs to the field of grain dryers, and particularly relates to a grain discharging device for a drying box of a grain dryer.

Background

From 2004, the total yield of grains in China has been continuously increased by twelve. The demand for grain drying equipment and processing equipment is correspondingly promoted due to the rapid increase and storage requirement of grain yield: firstly, the circulation and concentration of land promote the large-scale and intensive operation of agriculture, not only can improve the grain yield, but also can change the manual airing and storage mode before grains, so that the requirements on grain drying and processing are increased; secondly, the development of the grain futures market and the continuous increase of grain processing enterprises lead grain farmers to change the habit of selling grains on the spot after harvesting before, but learn to store the grains first and sell the grains with the help of other people when the grains are in good condition, and the change of the thought and the behavior mode also leads to the increase of the requirements on grain drying and processing; and with the improvement of the mechanized harvesting level, the amount of high-moisture grains is more and more in order to rush to harvest and rob seeds in the farming season, and the requirements for grain drying and processing are increased in order to reduce loss.

The working principle of the grain dryer is as follows: when the grains are loaded, the grains in the hopper are lifted to the top of the main machine bin through the elevator, and then the grains are conveyed into the drying box body through the upper auger until the drying box body is full. During drying, the grain discharging mechanism uninterruptedly discharges grains at the bottom of the drying section to the lower auger, the lower auger lifts the grains to the upper auger by the elevator, then the grains are sent to the tempering bin by the upper auger, the grains in the tempering bin slowly move to the four drying sections from top to bottom under the action of self weight, and a cycle is formed from the moment when the grains enter the drying section to the moment when the grains enter the drying section for the second time. The air indirectly heated by the hot-blast stove is fed into the hot-blast chamber of the drying section under the action of a centrifugal draught fan, the hot-blast self-heating air chamber continuously and transversely penetrates through the grain layer of the drying section, the flowing direction of hot air is mutually crossed with the moving direction of grains, the hot air flow is fully contacted with the grains, the grains are heated, heated and precipitated, the waste gas after the grains layer are dried is discharged from the waste gas chamber, and the process is repeated until the water content of the grains reaches the warehousing standard.

Grain drying-machine drying cabinet among the prior art is through setting up group grain rod rotation speed, and control grain is at the dwell time of stoving section, and the grain after the drying is arranged for the screw feeder down through group grain rod. The following problems exist in the grain discharging process of the grain poking stick:

1. during the process of rotating the grain poking rod to discharge the grains, the crushing rate of the grains is higher;

2. the grain poking stick is easy to accumulate grains, the equipment is troublesome to clean, and the workload of maintenance is large.

Disclosure of Invention

Aiming at the problems, the invention provides a grain unloading device for a drying box of a grain drying machine, which reduces the mechanical extrusion damage of grains in the grain discharging process after drying, avoids grain accumulation at dead angles and reduces the workload of equipment cleaning and maintenance.

The utility model provides a grain drying-machine drying box device of unloading, includes: a box body; the screen plate is fixed in the box body and arranged at the upper part of the box body; the bottom frame is fixedly connected with the box body and arranged at the bottom of the box body; the guide rail is fixed at the lower part of the box body; the grain discharging component is arranged below the screen plate, two ends of the grain discharging component are fixed on the guide rail, the grain discharging component is further connected with the transmission component, the transmission component is fixed on the bottom frame and arranged outside the box body, the transmission component is further connected with the motor component, the motor component provides power for the transmission component, and the transmission component drives the grain discharging component to linearly slide up and down along the guide rail.

Furthermore, ventilation holes are uniformly distributed on two sides of the screen plate.

Further, the grain discharge part comprises a supporting plate, a first cylindrical pin, a second cylindrical pin, a spring and a pressing plate, the supporting plate is arranged in two groups, the bottom of the supporting plate is fixed on the guide rail 7, the first cylindrical pin is arranged on the front end face of the supporting plate 31, the first end of the first cylindrical pin is fixed on the supporting plate, notches are formed in the front end face and the rear end face of the box body, the second end of the first cylindrical pin extends out of the box body from the notches, the first cylindrical pin can linearly slide up and down along the notches, the second end of the first cylindrical pin is hinged to the transmission part, positioning holes are further uniformly formed in the supporting plate and are through holes, the upper end face and the lower end face penetrate through the supporting plate, the first end of the second cylindrical pin is connected with the positioning holes in a sliding mode, the spring is further sleeved on the second cylindrical pin and is arranged between the pressing plate and the supporting plate, the bottoms of the two ends of the pressing plate are respectively fixedly connected with the second cylindrical pin, and the pressing plate can linearly move up and down along the direction of the positioning holes.

Furthermore, the cross section of the pressing plate is semicircular, the upper end face of the pressing plate is arc-shaped, and the bottom of the pressing plate is a plane.

Further, the transmission part includes the connecting rod, driven gear, the driving gear, the fixed plate, bearing assembly, driving shaft and driven shaft, the connecting rod corresponds with the backup pad and sets up two sets ofly, the first end of connecting rod is articulated with first cylindric lock second end, the connecting rod second end is articulated with the round pin axle on the driven gear, the round pin axle sets up the outside at driven gear, with driven gear fixed connection, two driven gear fix respectively at the both ends of driven shaft, two fixed plates are connected with the underframe, the fixed plate inboard all is provided with bearing assembly, the driven shaft is connected with the bearing assembly of fixed plate upper end, the driven shaft lower extreme is provided with the driving shaft, the driving shaft is connected with the bearing assembly of fixed plate lower extreme, the driving shaft both ends are fixed with the driving gear, driving gear and driven gear meshing, driving gear and driven gear all set up the outside at the fixed plate, driving shaft one end is connected with motor assembly.

Furthermore, the length of the pressing plate is corresponding to the length of the screen plate, and the width of the bottom of the pressing plate is not smaller than the spacing distance between the adjacent screen plates.

Further, the motor assembly comprises a motor, a motor support and a coupler, the motor support is fixedly connected with the fixing plate, the motor is arranged on the motor support and is connected with the first end of the coupler, and the second end of the coupler is connected with the driving shaft.

Furthermore, the number of the pressing plates corresponds to the number of the screen plates, and the pressing plates are arranged between the adjacent screen plates.

Furthermore, the number of the second cylindrical pins corresponds to the number of the positioning holes.

Furthermore, the material of clamp plate is rigid plastic.

The invention has the beneficial effects that: the hot air dehydrates and dries the grains from the ventilation holes on the screen plate, the grain discharging component reciprocates up and down along the guide rail, the grains are discharged from the gap between the grain discharging component and the screen plate, the grain discharging process ensures that the grains have enough residence time in the drying section, and the drying effect is improved; no grain residue exists between the net plates, so that the workload of equipment cleaning and maintenance is reduced; the grain unloading process depends on the grain weight, and the breakage rate of the grain is reduced.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a drying box grain discharging device of a grain dryer according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a grain discharging part of a drying box discharging device of a grain dryer according to an embodiment of the present invention;

FIG. 3 is a schematic view of a discharging component of a drying box discharging device of a grain dryer according to an embodiment of the present invention;

FIG. 4 is a schematic view of a transmission assembly of a drying box discharging device of a grain dryer according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a discharging part of a drying box discharging device of a grain dryer of an embodiment of the present invention when the discharging part runs to the highest point;

fig. 6 is a schematic structural view of a discharging part of a drying box discharging device of a grain dryer according to an embodiment of the present invention when the discharging part runs to the lowest point.

In the figure: 1-box body, 2-screen plate, 3-grain discharging part, 4-transmission part, 5-motor component, 6-bottom frame, 7-guide rail, 11-notch, 31-support plate, 32-first cylindrical pin, 33-positioning hole, 34-second cylindrical pin, 35-spring, 36-pressing plate, 41-connecting rod, 42-driven gear, 43-driving gear, 44-pin shaft, 45-fixing plate, 46-bearing component, 47-driving shaft, 48-driven shaft, 51-motor, 52-motor support and 53-coupler.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural view of a drying box discharging device of a grain drying machine according to an embodiment of the present invention, and the drying box discharging device of the grain drying machine includes a box body 1, a screen plate 2, a grain discharging part 3, a transmission part 4, a motor assembly 5, a bottom frame 6 and a guide rail 7.

The inside of the box body 1 is fixed with the screen plates 2 which are arranged on the upper part of the box body 1, the screen plates 2 are not less than 5 groups, and grain channels are arranged between the screen plates 2.

The grain discharging component 3 is arranged below the screen plate 2, two ends of the grain discharging component are fixed on the guide rail 7, the guide rail 7 is fixed on the lower part of the box body 1, and the grain discharging component 3 is also connected with the transmission component 4.

The transmission member 4 is fixed to the bottom frame 6 and is disposed outside the casing 1. The bottom frame 6 is fixedly connected with the box body 1 and is arranged at the bottom of the box body 1. The transmission part 4 is also connected with the motor component 5, the motor component 5 provides power for the transmission part 4, and the transmission part 4 drives the grain discharging part 3 to slide up and down along the guide rail 7.

When the grain discharging component 3 moves upwards, the gap between the top of the grain discharging component 3 and the adjacent screen plate 2 is reduced, the grain is discharged into the lower auger at a slow speed, the retention time of the grain in the drying section is ensured, and the drying efficiency is improved. When the grain discharging component 3 moves downwards, the gap between the top of the grain discharging component 3 and the adjacent screen plate 2 is increased, the grain is discharged into the lower auger at an accelerated speed, and the grain is prevented from being accumulated in the drying section.

The grain discharging is carried out by controlling the gap between the grain discharging part 3 and the adjacent net plate 2, and meanwhile, the retention time of the grains in the drying section is ensured. The grain is discharged to the lower auger through the dead weight, so that the mechanical stirring and conveying are avoided, and the breakage rate of the grain is reduced.

Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of a grain discharging component of a drying box discharging device of a grain dryer according to an embodiment of the present invention, and fig. 3 is a schematic mounting diagram of a grain discharging component of a drying box discharging device of a grain dryer according to an embodiment of the present invention, where the grain discharging component 3 includes a supporting plate 31, a first cylindrical pin 32, a second cylindrical pin 34, a spring 35, and a pressing plate 36. Support plate 31 is the rectangular plate, and support plate 31 sets up two sets ofly, and support plate 31 bottom is fixed on guide rail 7, and the terminal surface is provided with first cylindric lock 32 before support plate 31, and first end of first cylindric lock 32 is fixed on support plate 31. As shown in FIG. 3, notches 11 are formed in the front and rear end faces of the case 1, the second end of the first cylindrical pin 32 extends out of the case 1 from the notches 11, the first cylindrical pin 32 can linearly slide up and down along the notches 11, and the second end of the first cylindrical pin 32 is hinged to the transmission member 4. The support plate 31 is further provided with positioning holes 33, and the positioning holes 33 are through holes and penetrate through the upper end surface and the lower end surface of the support plate 31. The number of the second cylindrical pins 34 corresponds to the number of the positioning holes 33, the first ends of the second cylindrical pins 34 are slidably connected with the positioning holes 33, springs 35 are sleeved on the second cylindrical pins 34, and the springs 35 are arranged between the pressing plate 36 and the supporting plate 31.

The cross section of the pressing plate 36 is semicircular, the upper end face is arc-shaped, and the bottom is a plane. The length of the pressing plate 36 is set corresponding to the length of the screen plate 2, and the width of the bottom of the pressing plate 36 is not less than the spacing distance between the adjacent screen plates 2. The bottoms of the two ends of the pressing plate 36 are respectively fixedly connected with the second ends of the second cylindrical pins 34, and the pressing plate 36 can linearly move up and down along the direction of the positioning holes 33.

Preferably, the pressing plate 36 is made of hard plastic, so that the weight of the grain discharge part 3 is reduced, and the production cost is saved.

The number of the pressing plates 36 corresponds to the number of the screen plates 2, the pressing plates 36 are arranged between the adjacent screen plates 2, as shown in fig. 3, ventilation holes are evenly distributed on two sides of each screen plate 2, and hot air is sent into the drying box through the ventilation holes. When the pressing plate 36 moves upward, the gap between the arc surface at the upper end and the adjacent screen plate 2 becomes smaller, and when the pressing plate 36 moves downward, the gap between the arc surface at the upper end and the adjacent screen plate 2 becomes larger. The upper end of the pressing plate 36 is provided with an arc surface, which is beneficial to the sliding of grains and avoids the accumulation of grains. Be provided with spring 35 between clamp plate 36 and the backup pad 31, spring 35 can adjust the clearance between clamp plate 36 and the adjacent otter board 2, and when the grain between otter board 2 piled up when more, spring 35 is compressed under the grain action of gravity, and clamp plate 36 moves down, and the clearance between clamp plate 36 and the otter board 2 grow, and the grain discharge speed accelerates.

Referring to fig. 4, fig. 4 is an installation schematic diagram of a transmission part of a drying box discharging device of a grain dryer according to an embodiment of the present invention, where the transmission part 4 includes a connecting rod 41, a driven gear 42, a driving gear 43, a fixing plate 45, a bearing assembly 46, a driving shaft 47, and a driven shaft 48. Two groups of connecting rods 41 are correspondingly arranged on the supporting plate 31, the first ends of the connecting rods 41 are hinged with the second ends of the first cylindrical pins 32 of the grain discharging component 3, and the second ends of the connecting rods 41 are hinged with the pin shafts 44 on the driven gear 42.

The pin shaft 44 is disposed outside the driven gear 42 and is fixedly connected to the driven gear 42, and the two driven gears 42 are respectively fixed to two ends of a driven shaft 48. Two fixed plates 45 are connected with the underframe 6, set up the bottom of box 1, and the fixed plate 45 inboard all is provided with bearing assembly 46. The driven shaft 48 is connected with a bearing assembly 46 at the upper end of the fixed plate 45, a driving shaft 47 is arranged at the lower end of the driven shaft 48, and the driving shaft 47 is connected with the bearing assembly 46 at the lower end of the fixed plate 45. Driving gear 43 is fixed with at driving shaft 47 both ends, and driving gear 43 and driven gear 42 mesh, and driving gear 43 and driven gear 42 all set up the outside at fixed plate 45, and driving shaft 47 one end is connected with motor element 5.

The transmission ratio can be controlled by the selection of the driving gear 43 and the driven gear 42, and the purpose of controlling the grain discharging speed is achieved.

As shown in fig. 4, the motor assembly 5 includes a motor 51, a motor bracket 52, and a coupling 53. The motor bracket 52 is fixedly connected with the fixing plate 45, the motor 51 is arranged on the motor bracket 52, the motor 51 is connected with the first end of the coupler 53, and the second end of the coupler 53 is connected with the driving shaft 47. The motor 51 is detachably connected with the motor bracket 52, so that the maintenance is convenient.

Referring to fig. 5 and 6, fig. 5 is a schematic structural view of a discharging component of a drying box discharging device of a grain dryer according to an embodiment of the present invention when the discharging component moves to a highest point, and fig. 6 is a schematic structural view of a discharging component of a drying box discharging device of a grain dryer according to an embodiment of the present invention when the discharging component moves to a lowest point, a motor 51 drives a driving gear 43 on a driving shaft 47 to rotate, the driving gear 43 drives a driven gear 42 to rotate, a pin 44 on the driven gear 42 drives a connecting rod 41 to swing, and the connecting rod 41 drives the discharging component 3 to reciprocate up and down along a guide rail 7 in a straight line in a swinging process. In the rotation process of the driven gear 42, when the pin shaft 44 is at the uppermost end of the driven shaft 48, the grain discharging component 3 runs to the highest point, the gap between the pressing plate 36 and the screen plate 2 is minimum, and the minimum gap is larger than the grain size, so that the grain extrusion damage is avoided; when the pin shaft 44 is arranged at the lowest end of the driven shaft 48, the grain discharging component 3 runs to the lowest point, and the gap between the pressing plate 36 and the net plate 2 is the largest.

The drying box unloads the grain process: grain gets into the stoving box from last screw feeder, temporary storage between the clearance of adjacent otter board 2, and the stoving process, hot-blast ventilation hole from otter board 2 carries out dehydration stoving to grain. The motor 51 is started, the grain discharging component 3 reciprocates up and down along the guide rail 7, grains are discharged from a gap between the pressing plate 36 and the screen plate 2, the spring 35 is arranged between the pressing plate 36 and the supporting plate 31, the spring 35 can adjust the gap between the pressing plate 36 and the adjacent screen plate 2, the grain discharging process ensures that the grains have enough residence time in a drying section, and the drying effect is improved; no grain residue exists between the screen plates 2, so that the workload of equipment cleaning and maintenance is reduced; the grain unloading process depends on the grain weight, and the breakage rate of the grain is reduced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a grain drying-machine drying-box grain unloading device which characterized in that includes:

a box body (1);

the screen plate (2) is fixed in the box body (1) and arranged at the upper part of the box body (1); vent holes are uniformly distributed on two sides of the screen plate (2);

the bottom frame (6) is fixedly connected with the box body (1) and arranged at the bottom of the box body (1);

the guide rail (7) is fixed at the lower part of the box body (1);

the grain discharging component (3) is arranged below the screen plate (2), two ends of the grain discharging component are fixed on the guide rails (7), the grain discharging component (3) is further connected with the transmission component (4), the transmission component (4) is fixed on the bottom frame (6) and arranged outside the box body (1), the transmission component (4) is further connected with the motor component (5), the motor component (5) provides power for the transmission component (4), and the transmission component (4) drives the grain discharging component (3) to linearly slide up and down along the guide rails (7); the grain discharge part (3) comprises two groups of supporting plates (31), first cylindrical pins (32), second cylindrical pins (34), springs (35) and pressing plates (36), the supporting plates (31) are arranged, the bottoms of the supporting plates (31) are fixed on the guide rails (7), the first cylindrical pins (32) are arranged on the front end face of the supporting plate (31), the first ends of the first cylindrical pins (32) are fixed on the supporting plates (31), notches (11) are formed in the front end face and the rear end face of the box body (1), the second ends of the first cylindrical pins (32) extend out of the box body (1) from the notches (11), the first cylindrical pins (32) can linearly slide up and down along the notches (11), the second ends of the first cylindrical pins (32) are hinged to the transmission part (4), positioning holes (33) are further uniformly distributed in the supporting plate (31), the positioning holes (33) are through holes and penetrate through the upper end face and the lower end face of the supporting plate (31), the first ends of the second cylindrical pins (34) are connected with the positioning holes (33), the second cylindrical pins (34) are connected with the second cylindrical pins (35) in a sliding mode, the springs (35) and the pressing plates (36) are fixed between the bottoms of the supporting plates (31), the pressing plate (36) can linearly move up and down along the direction of the positioning hole (33);

the transmission part (4) comprises connecting rods (41), driven gears (42), driving gears (43), fixing plates (45), bearing assemblies (46), driving shafts (47) and driven shafts (48), the connecting rods (41) and the supporting plates (31) are correspondingly arranged in two groups, the first ends of the connecting rods (41) are hinged to the second ends of the first cylindrical pins (32), the second ends of the connecting rods (41) are hinged to pin shafts (44) on the driven gears (42), the pin shafts (44) are arranged on the outer sides of the driven gears (42) and fixedly connected with the driven gears (42), the two driven gears (42) are respectively fixed at two ends of the driven shafts (48), the two fixing plates (45) are connected with the bottom frame (6), the bearing assemblies (46) are arranged on the inner sides of the fixing plates (45), the driven shafts (48) are connected with the driving gears (47) at the lower ends of the driving shafts (47) and the fixing plates (46), the driving gears (43) are fixed at two ends of the driving shafts (43), and the driving shafts (42) are meshed with the driving shafts (43), the driving gear (43) and the driven gear (42) are arranged on the outer side of the fixing plate 45, and one end of the driving shaft (47) is connected with the motor assembly (5).

2. The grain drying-machine stoving case unloading device of claim 1, characterized in that clamp plate (36) cross section is semi-circular, and the up end is arc, and the bottom is the plane.

3. The grain dryer drying box unloading apparatus of claim 2, wherein the length of the pressing plate (36) is corresponding to the length of the mesh plate (2), and the width of the bottom of the pressing plate (36) is not less than the distance between adjacent mesh plates (2).

4. The grain dryer drying box grain unloading device of claim 1, wherein the motor assembly (5) comprises a motor (51), a motor bracket (52) and a coupler (53), the motor bracket (52) is fixedly connected with the fixing plate (45), the motor (51) is arranged on the motor bracket (52), the motor (51) is connected with a first end of the coupler (53), and a second end of the coupler (53) is connected with the driving shaft (47).

5. The grain dryer drying box grain unloading apparatus of claim 1, wherein the number of the pressing plates (36) corresponds to the number of the net plates (2), and the pressing plates (36) are arranged between the adjacent net plates (2).

6. The grain dryer drying box grain unloading apparatus of claim 1, wherein the number of the second cylindrical pins (34) corresponds to the number of the positioning holes (33).

7. The grain drying machine stoving case unloading apparatus of claim 1 or 2, characterized in that the material of said pressure plate (36) is rigid plastic.