Impulse type grain drying fluidized bed air inlet control device

Abstract

The utility model relates to the technical field of grain drying equipment, in particular to a pulse type grain drying fluidized bed air inlet control device which comprises an air inlet injection pipeline, the air inlet injection pipeline is arranged at the bottom of a fluidized bed drying chamber, and the interior of the air inlet injection pipeline is divided into a plurality of air inlet channels through a plurality of partition plates. The air inlet directions of the air inlet channels are inclined, air door mechanisms capable of controlling the air inlet channels to be opened and closed intermittently are arranged in the air inlet channels, each air door mechanism comprises a door plate capable of rotating, and the door plates are used for opening and closing the air inlet channels. The air inlet device is installed at the bottom of a drying chamber of a grain fluidized bed drying system and can provide sectional air inlet for the drying chamber, and each section of air inlet channel adopts intermittent pulse type air inlet, so that impact force for forward movement is generated on grains when hot air inlet dries the grains, the grains gradually move towards a discharging bin, and the grain drying efficiency is improved. Meanwhile, it is guaranteed that the grains make full contact with hot air, and the drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain drying equipment, in particular to a pulse type grain drying fluidized bed air inlet control device. Background Art

[0002] The existing fluidized bed grain drying system, such as the fluidized bed grain drying device recorded in the authorization announcement number CN204787602U, uses a blower to blow hot air from the bottom of the fluidized bed into the drying chamber to dry the rice inside.

[0003] The traditional fluidized bed rice drying structure has the following disadvantages in that the hot air entering the structure is that the blower delivers hot air at a fixed angle, and the rice can only jump up and down and is not easy to move forward, which can easily cause the rice to pile up. If the effect of continuous forward movement of the grains is to be achieved, the wind force needs to be increased, which increases the power consumption of the overall equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a pulse type grain drying fluidized bed air inlet control device.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A pulse-type grain drying fluidized bed air intake control device comprises an air intake injection pipe, which is arranged at the bottom of the fluidized bed drying chamber. The interior of the air intake injection pipe is divided into multiple air intake channels by multiple partitions. The air intake direction of the air intake channel is inclined. A damper mechanism capable of controlling the intermittent opening and closing of the air intake channel is arranged in each air intake channel. The damper mechanism comprises a rotatable door plate, which is used to open and close the air intake channel.

[0007] The feed bin of the grain fluidized bed drying system is usually arranged at one end of the drying chamber, and the grain enters from the upper end of the drying chamber. In the above structure, the air intake injection pipe is divided into multiple air intake channels, so that hot air enters from multiple channels at the bottom of the drying chamber respectively, and the air intake channels are independently controlled to open and close, so that the air intake can be controlled in sections. In addition, the air intake channels are intermittently opened and closed, so that intermittent pulse-like upward air intake can be formed, which has an intermittent impact effect on the grain in the drying chamber. Combined with the inclined air intake channels, the hot air intake can produce a forward impact force on the grain while drying the grain, so that the grain gradually moves toward the discharge bin to avoid grain accumulation. At the same time, it ensures that the grain is fully in contact with the hot air, thereby improving the drying efficiency.

[0008] The door panel is fixedly connected with a shaft rod, and both ends of the shaft rod are rotatably connected to the side walls of the air intake injection pipe respectively. One end of the shaft rod penetrates the side wall of the air intake injection pipe and is connected to a driving mechanism. The driving mechanism can intermittently drive the shaft rod to rotate in one direction. When rotating, the door panel closes the air intake channel. The shaft rod is also connected with a return mechanism, which can drive the shaft rod to rotate back in the other direction. After returning, the door panel opens the air intake channel.

[0009] The driving mechanism includes a paddle, which is fixedly connected to one end of a shaft that passes through the side wall of an intake injection pipe. The intake injection pipe is rotatably provided with at least one transmission wheel, which is connected to an annular transmission structure, on which a plurality of evenly distributed protrusion structures are fixedly provided. The protrusion structure can drive the paddle to rotate in one direction by a certain angle. When the protrusion structure no longer paddles the paddle, the paddle is driven to reset by a return mechanism. The annular transmission structure is connected to a driving wheel, and the driving wheel is connected to a driving motor.

[0010] Specifically, the annular transmission structure uses a chain, the transmission wheel is a transmission sprocket, and the driving wheel is a driving sprocket.

[0011] The protrusion structure is a cylindrical protrusion or a sheet-like protrusion structure, which can be turned by turning the paddle to a certain angle.

[0012] The return mechanism uses a return torsion spring, which is arranged between the shaft rod and the side wall of the intake injection pipe.

[0013] In order to ensure the transmission stability of the chain, multiple groups of first limiting mechanisms are arranged on the outside of the intake injection pipe. The first limiting mechanisms are arranged one by one corresponding to the paddles. The first limiting mechanisms include two bending plates fixedly connected to the outside of the intake injection pipe. The two bending plates are arranged opposite to each other, and there is a gap between them. The chain can just slide and be connected between the two bending plates. The two bending plates can ensure the stability of the chain when moving.

[0014] In order to ensure the stability of the return of the paddle, multiple groups of second limiting mechanisms are arranged on the outside of the intake injection pipe, and the second limiting mechanisms are arranged one by one corresponding to the paddles. The second limiting mechanism includes a support plate, and a limiting column is detachably installed on the support plate. The limiting column is arranged on one side close to the lower end of the paddle. The limiting column can limit the return amplitude of the paddle to avoid excessive rebound force of the return torsion spring, which causes the paddle to rotate too much. At the same time, the rotation angle of the paddle is limited so that the door panel reaches the set opening amplitude; scale lines are arranged on the support plate, and the setting of the scale lines can provide calibration for the installation position of the limit column and the rotation amplitude of the paddle, so that the staff can observe and set the angle of the paddle from the outside, thereby setting the opening amplitude of the door panel to the air intake channel.

[0015] There are two main installation forms of limit columns:

[0016] First, the support plate is provided with a plurality of connection holes, and the limiting posts are tightly inserted into the connection holes.

[0017] Second, the support plate is provided with an arc-shaped connecting groove, and the limiting column is slidably installed in the connecting groove. The position of the limiting column can be fixed by a bolt, and the bolt is threadedly connected to one side of the limiting column, so that the limiting column can be locked and pressed in the connecting groove.

[0018] A mesh plate is arranged on the upper part of the air intake injection pipeline to prevent grains from falling into the air intake injection pipeline.

[0019] The lower part of the air intake injection pipeline is respectively connected to a plurality of air blowing devices through a plurality of branch pipelines, the air blowing devices are connected to a control valve, the air blowing devices are connected to a hot air pipeline, and the hot air comes from a fin heat exchanger.

[0020] The beneficial effects achieved by the utility model are:

[0021] The utility model is installed at the bottom of the drying chamber of the grain drying fluidized bed, and can provide segmented air intake for the drying chamber, and each air intake channel is intermittent pulse air intake, so that the hot air intake can produce an impact force on the grain to move forward while drying the grain, so that the grain gradually moves toward the discharge bin, avoiding grain accumulation, and at the same time ensuring that the grain is fully in contact with the hot air, thereby improving the drying efficiency.

[0022] The fluidized bed drying system of the utility model can be used to dry grains continuously, at high temperature and quickly, so that the moisture content of the grains is uniform after drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a structural schematic diagram of the utility model installed in a grain fluidized bed drying system;

[0025] Figure 2 yes Figure 1 Exploded view (partial structure);

[0026] Figure 3 It is a structural schematic diagram of the utility model;

[0027] Figure 4 yes Figure 3 Exploded view of;

[0028] Figure 5 It is a schematic diagram of the structure of the utility model (partially enlarged);

[0029] Figure 6 It is a partial structural diagram of the driving mechanism (the first structural form);

[0030] Figure 7 It is a partial structural diagram of the driving mechanism (the second structural form).

[0031] In the figure: 1. feed bin; 2. drying chamber; 3. exhaust duct; 4. air intake injection duct; 41. mesh plate; 42. driving mechanism; 421. paddle; 422. bending plate; 423. support plate; 424. limit column; 425. scale line; 426. chain; 427. raised structure; 428. connecting hole; 429. connecting groove; 43. door panel; 44. shaft; 45. partition; 46. driving motor; 47. driving wheel; 48. transmission wheel; 5. bracket; 6. branch duct; 7. protection plate. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0033] Example:

[0034] like Figure 1-Figure 7 As shown, a pulse-type grain drying fluidized bed air intake control device includes an air intake injection pipe 4, which is fixedly arranged at the bottom of the fluidized bed drying chamber 2, and the upper part of the drying chamber 2 is respectively connected to a feed bin 1 and an exhaust pipe 3, and the air intake injection pipe 4 and the drying chamber 2 are both supported by a bracket 5.

[0035] The interior of the intake injection duct 4 is divided into multiple intake channels by multiple partitions 45. The partitions 45 are arranged at an angle, that is, the intake direction of the intake channel is arranged at an angle. A damper mechanism capable of controlling the intermittent opening and closing of the intake channel is arranged in the intake channel. The damper mechanism includes a rotatable door plate 43, which is used to open and close the intake channel.

[0036] The feed bin 1 of the grain fluidized bed drying system is usually arranged at one end of the drying chamber 2, and the grain enters from the upper end of the drying chamber 2. In the above structure, the air intake injection pipe 4 is divided into multiple air intake channels, so that hot air enters from multiple channels at the bottom of the drying chamber 2 respectively, and the air intake channels are independently controlled to open and close, so that the air intake can be controlled in sections. In addition, the air intake channel is intermittently opened and closed, so that intermittent pulse-like upward air intake can be formed, which has an intermittent impact effect on the grain in the drying chamber 2. Combined with the inclined air intake channel, the hot air intake can produce a forward impact force on the grain while drying the grain, so that the grain gradually moves toward the discharge bin to avoid grain accumulation. At the same time, it ensures that the grain is fully in contact with the hot air, thereby improving the drying efficiency.

[0037] The door panel 43 is fixedly connected with a shaft rod 44, and both ends of the shaft rod 44 are rotatably connected with the side walls of the intake injection pipe 4 respectively. One end of the shaft rod 44 penetrates the side wall of the intake injection pipe 4 and is connected with the driving mechanism 42. The driving mechanism 42 can intermittently drive the shaft rod 44 to rotate in one direction. When rotating, the door panel 43 closes the intake channel. The shaft rod 44 is also connected with a return mechanism, which can drive the shaft rod 44 to rotate and return in the other direction. After returning, the door panel 43 opens the intake channel.

[0038] The driving mechanism 42 includes a paddle 421, which is a long strip plate structure. The paddle 421 is fixedly connected to one end of the shaft 44 that passes through the side wall of the intake injection pipe 4. The intake injection pipe 4 is rotatably provided with at least one transmission wheel 48, and the transmission wheel 48 is connected to an annular transmission structure. A plurality of evenly distributed protrusion structures 427 are fixedly provided on the annular transmission structure. The protrusion structure 427 can drive the paddle 421 to rotate a certain angle in one direction. When the protrusion structure 427 no longer paddles the paddle 421, the paddle 421 is driven to reset by the return mechanism. The annular transmission structure is connected to the driving wheel 47, and the driving wheel 47 is connected to the driving motor 46.

[0039] Specifically, the annular transmission structure uses a chain 426, the transmission wheel 48 is a transmission sprocket, and the driving wheel 47 is a driving sprocket.

[0040] The protrusion structure 427 is a cylindrical protrusion or a sheet-shaped protrusion, which can move the paddle 421 to rotate a certain angle.

[0041] The return mechanism uses a return torsion spring (not shown in the drawings), which is arranged between the shaft rod 44 and the side wall of the intake injection pipe 4. When the protruding structure 427 moves the paddle 421, the return torsion spring is compressed and deformed. When the protruding structure 427 no longer moves the paddle 421, the rebound force of the return torsion spring drives the shaft rod 44 to return to its original position.

[0042] In order to ensure the transmission stability of the chain 426, a plurality of first limiting mechanisms are arranged on the outside of the intake injection pipe 4. The first limiting mechanisms are arranged one-to-one corresponding to the paddles 421. The first limiting mechanisms include two bending plates 422 fixedly connected to the outside of the intake injection pipe 4. The two bending plates 422 are arranged opposite to each other, and there is a gap between them. The chain 426 can just slide and be clamped between the two bending plates 422. The two bending plates 422 can ensure the stability of the chain 426 when moving.

[0043] In order to ensure the stability of the return of the paddle 421, a plurality of groups of second limiting mechanisms are arranged on the outside of the intake injection pipe 4, and the second limiting mechanisms are arranged in a one-to-one correspondence with the paddle 421. The second limiting mechanism includes a support plate 423, and a limiting column 424 is detachably installed on the support plate 423. The limiting column 424 is arranged close to the lower end of the paddle 421. The limiting column 424 can limit the return amplitude of the paddle 421 to avoid excessive rebound force of the return torsion spring, which causes the paddle 421 to rotate too much. At the same time, the rotation angle of the paddle 421 is limited, so that the door panel 43 reaches the set opening amplitude; a scale line 425 is arranged on the support plate 423, and the setting of the scale line 425 can provide calibration for the installation position of the limit column 424 and the rotation amplitude of the paddle 421, so that the staff can observe and set the angle of the paddle 421 from the outside, thereby setting the opening amplitude of the door panel 43 to the intake channel.

[0044] The installation forms of the limit column 424 can be selected from the following two types:

[0045] First, if Figure 6 As shown, a plurality of connection holes 428 are formed on the support plate 423 , and the limiting posts 424 are tightly inserted into the connection holes 428 .

[0046] Second, if Figure 7 As shown, the support plate 423 is provided with an arc-shaped connecting groove 429, and the limiting column 424 is slidably installed in the connecting groove 429. The position of the limiting column 424 can be fixed by a bolt, and the bolt is threadedly connected to one side of the limiting column 424, so that the limiting column 424 can be locked and pressed in the connecting groove 429.

[0047] A protection plate 7 is disposed outside the intake injection pipe 4 , and the protection plate 7 is disposed outside the driving mechanism 42 to protect it.

[0048] A mesh plate 41 is provided on the upper portion of the air intake injection pipeline 4 to prevent grains from falling into the air intake injection pipeline 4 .

[0049] The lower part of the air intake injection pipe 4 is respectively connected to a plurality of air blowing devices through a plurality of branch pipes 6, the air blowing devices are connected to a control valve, and the air blowing devices are connected to a hot air pipe, and the hot air comes from a fin heat exchanger.

Claims

1. A pulsed grain drying fluidized bed air inlet control device, characterized in that: The invention comprises an air intake injection pipe (4), the air intake injection pipe (4) being arranged at the bottom of the fluidized bed drying chamber (2), the interior of the air intake injection pipe (4) being divided into a plurality of air intake channels by a plurality of partitions (45), the air intake directions of the air intake channels being arranged at an inclination, and each air intake channel being provided with a damper mechanism capable of controlling the intermittent opening and closing of the air intake channel, the damper mechanism comprising a rotatable door plate (43).

2. The pulsed grain drying fluidized bed air inlet control device according to claim 1 is characterized in that: The door panel (43) is fixedly connected to a shaft (44), and both ends of the shaft (44) are respectively rotatably connected to the side walls of the air intake injection pipe (4). One end of the shaft (44) penetrates the side wall of the air intake injection pipe (4) and is connected to a driving mechanism (42). The driving mechanism (42) can intermittently drive the shaft (44) to rotate in one direction. The shaft (44) is also connected to a return mechanism, and the return mechanism can drive the shaft (44) to rotate and return in another direction.

3. The pulsed grain drying fluidized bed air inlet control device according to claim 2, characterized in that: The driving mechanism (42) comprises a paddle (421), the paddle (421) being fixedly connected to one end of a shaft (44) penetrating a side wall of an intake injection pipe (4), the intake injection pipe (4) being rotatably provided with at least one transmission wheel (48), the transmission wheel (48) being connected to an annular transmission structure, a plurality of evenly distributed protrusion structures (427) being fixedly provided on the annular transmission structure, the protrusion structures (427) being capable of driving the paddle (421) to rotate in one direction, the annular transmission structure being connected to a driving wheel (47), and the driving wheel (47) being connected to a driving motor (46).

4. The pulsed grain drying fluidized bed air inlet control device according to claim 3 is characterized in that: The annular transmission structure is a chain (426), the transmission wheel (48) is a transmission sprocket, and the driving wheel (47) is a driving sprocket.

5. The pulsed grain drying fluidized bed air inlet control device according to claim 3, characterized in that: The protrusion structure (427) is a cylindrical protrusion or a sheet-like protrusion.

6. The pulsed grain drying fluidized bed air inlet control device according to claim 2, characterized in that: The return mechanism uses a return torsion spring.

7. The pulsed grain drying fluidized bed air inlet control device according to claim 4, characterized in that: The air intake injection pipe (4) is provided with a plurality of first limiting mechanisms on the outside thereof, the first limiting mechanisms being provided in a one-to-one correspondence with the paddles (421), the first limiting mechanisms comprising two bending plates (422) fixedly connected to the outside of the air intake injection pipe (4), the two bending plates (422) being arranged opposite to each other and having a gap therebetween, and the chain (426) being able to be slidably engaged between the two bending plates (422).

8. The pulsed grain drying fluidized bed air inlet control device according to claim 3, characterized in that: A plurality of groups of second limiting mechanisms are arranged outside the air intake injection pipe (4), the second limiting mechanisms being arranged in one-to-one correspondence with the paddles (421), the second limiting mechanisms comprising a support plate (423), a limiting column (424) being detachably mounted on the support plate (423), the limiting column (424) being arranged close to a lower end of the paddle (421), and a scale line (425) being arranged on the support plate (423).

9. The pulsed grain drying fluidized bed air inlet control device according to claim 8, characterized in that: The support plate (423) is provided with a plurality of connection holes (428), and the limiting columns (424) are tightly inserted into the connection holes (428).

10. The pulsed grain drying fluidized bed air inlet control device according to claim 8, characterized in that: The support plate (423) is provided with an arc-shaped connecting groove (429), and the limiting column (424) is slidably installed in the connecting groove (429).

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