Granule drying machine and drying method thereof

Abstract

The invention belongs to the field of drying, and particularly provides a granule drying machine and a drying method thereof. A drying assembly is arranged on the outer side of the drying machine body; the drying assembly comprises a heating pipe and a heat conduction ring. The heat conduction ring is arranged around the discharging pipe and fixedly arranged at the bottom of the drying machine body. The heating pipe is arranged outside the heat conducting ring; when the drying machine body dries the fed granules, the heat conduction ring is heated through the heating pipe, so that the bottom of the drying machine body and the discharging pipe are heated, and drying of the granules in the drying machine body is completed. The heating pipe and the heat conduction ring are arranged at the bottom of the drying machine body, and the temperature of the heating pipe is uniformly dispersed to the bottom of the drying machine body and the discharging pipe through the heat conduction ring, so that granules in the drying machine body are dried by heat in a concentrated manner, and the utilization rate of the heat is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of drying, and specifically relates to a preliminary treatment for promoting the drying of solid materials, and in particular to a granular material dryer and a drying method thereof. Background Art

[0002] After the pellets are prepared, they need to be dried.

[0003] The following methods are used in the related art to dry the pellets: Hot air drying uses hot air flow to place the wet granules in a drying chamber. The hot air transfers heat through the surface of the granules to evaporate the water. This method requires continuous heating of the air. After the hot air blows through, a large amount of heat will escape with the air, greatly increasing the drying cost.

[0004] Microwave heating drying is a method of heating materials using microwave radiation, which can evenly heat the moisture inside the particles, thereby improving drying efficiency. However, it is suitable for particles with low moisture content, but not for particles with high moisture content.

[0005] Therefore, how to reduce the drying cost when drying pellets with high moisture content is an urgent problem to be solved.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0007] The embodiments of the present disclosure at least provide a pellet dryer and a drying method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a pellet dryer, comprising: Dryer body; A discharge pipe is provided at the bottom of the dryer body; A drying component is arranged on the outside of the dryer body; Wherein, the drying component comprises: a heating tube and a heat conducting ring; The heat-conducting ring is arranged around the discharge pipe and is fixedly arranged at the bottom of the dryer body; The heating tube is arranged outside the heat-conducting ring; When the dryer body dries the pellets put in, the heat-conducting ring is heated by the heating tube, thereby heating the bottom of the dryer body and the discharge pipe to complete the drying of the pellets in the dryer body.

[0009] In at least one embodiment, the dryer body comprises: Drying cylinder, stirring shaft, stirring blades and driving motor; The stirring blade is rotatably arranged in the drying cylinder through the stirring shaft; The driving motor is suitable for driving the stirring shaft to rotate, thereby driving the stirring blade to rotate.

[0010] In at least one embodiment, each blade of the stirring blade is provided with a pushing member; A driving member is arranged inside the blade; The driving member is suitable for driving the pushing member to move back and forth along the blade, thereby pushing the granular materials in the drying cylinder to move and increasing the fluidity of the granular materials.

[0011] In at least one embodiment, the blade is provided with a sliding groove penetrating the top surface and the bottom surface of the blade; The driving member is arranged in the sliding groove; The driving member includes a screw, a sliding block and a driving motor. The screw rod passes through the sliding block and is fixedly disposed in the sliding groove; The driving motor is embedded in the sliding block; The sliding block is slidably disposed in the sliding groove; The pushing member is arranged on the sliding block.

[0012] In at least one embodiment, the pusher comprises: a pusher plate, a return torsion spring and a rotating shaft; The reset torsion spring is sleeved on the rotating shaft; The push plate is rotatably connected to the sliding block via a rotating shaft; When the return torsion spring is in an initial state, the included angle α between the push plate and the sliding direction of the push plate is in the range of 60-80°.

[0013] In at least one embodiment, the pellet dryer further comprises a control module; The control module is electrically connected to the propulsion motor and the drive motor respectively; The control module is configured to control the driving motor to operate after the pellets enter the drying cylinder, thereby driving the stirring blades to rotate, and control the pushing motor to operate after a preset time T, thereby driving the pushing plate to reciprocate along the blades.

[0014] In at least one embodiment, before the pellets are put into the drying drum, the control module is also configured to control the pushing motor to push the pushing plate toward the stirring shaft. Thereafter, the control module is also configured to control the rotation of the stirring shaft, thereby making the side surface of the previous blade abut against the end surface of the next blade.

[0015] In at least one embodiment, after the pellets are dried and discharged from the discharge pipe, the control module is also configured to control the push motor to push the push plate toward the inner wall of the drying cylinder, so that one end of the push plate is against the inner wall of the drying cylinder. Thereafter, the control module is also configured to control the rotation of the stirring shaft, so that the push plate cleans the inner wall of the drying cylinder.

[0016] In at least one embodiment, the number of the stirring blades is plural and the stirring blades are arranged at intervals along the axial direction of the stirring shaft.

[0017] In a second aspect, the present disclosure provides a drying method of the pellet dryer as described above, the method comprising: Put the pellets into the dryer body; Agitation of the pellets through the dryer body; The drying assembly is controlled to heat the bottom of the dryer body and the discharge pipe, thereby drying the pellets.

[0018] The beneficial effect of the present invention is that the pellet dryer and the drying method thereof are provided with a heating tube and a heat-conducting ring at the bottom of the dryer body, and the temperature of the heating tube is evenly distributed to the bottom of the dryer body and the discharge pipe through the heat-conducting ring, so that the heat is concentrated to dry the pellets in the dryer body, thereby improving the utilization rate of heat. At the same time, a pusher is provided on the stirring blade in the dryer body to increase the fluidity of the pellets in the dryer body, thereby increasing the drying effect.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A perspective view of a pellet dryer provided by an embodiment of the present disclosure; Figure 2A cross-sectional view of a pellet dryer provided for an embodiment of the present disclosure; Figure 3 A schematic diagram of the structure of a stirring shaft and a stirring blade provided in an embodiment of the present disclosure; Figure 4 A top view of a stirring shaft and stirring blades provided in an embodiment of the present disclosure; Figure 5 The present invention is a flow chart of a drying method of a pellet dryer provided in an embodiment of the present invention.

[0023] In the figure: 100, dryer body; 110, discharge pipe; 120, drying cylinder; 130, stirring blade; 131, blade; 1311, sliding groove; 132, pushing member; 1321, pushing plate; 133, driving member; 1331, screw; 1332, sliding block; 140, driving motor; 150, stirring shaft; 200, drying component; 210, heating tube; 220, heat conductive ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, in the drawings, the thickness of the components may be enlarged or reduced in order to effectively describe the technical content.

[0026] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] See also Figure 1 , Figure 1The schematic structural diagram of the pellet dryer is shown, which includes: a dryer body 100; a discharge pipe 110 is arranged at the bottom of the dryer body 100; a drying component 200 is arranged on the outside of the dryer body 100; wherein the drying component 200 includes: a heating tube 210 and a heat-conducting ring 220; the heat-conducting ring 220 is arranged around the discharge pipe 110 and is fixedly arranged at the bottom of the dryer body 100; the heating tube 210 is arranged outside the heat-conducting ring 220; wherein, when the dryer body 100 dries the put pellets, the heat-conducting ring 220 is heated by the heating tube 210, thereby heating the bottom of the dryer body 100 and the discharge pipe 110, and completing the drying of the pellets in the dryer body 100. By arranging a heating tube 210 and a heat-conducting ring 220 at the bottom of the dryer body 100, the temperature of the heating tube 210 is evenly distributed to the bottom of the dryer body 100 and the discharge pipe 110 through the heat-conducting ring 220, so that the heat is concentrated to dry the pellets in the dryer body 100, thereby improving the utilization rate of heat.

[0028] See also Figure 2 In some embodiments, the dryer body 100 includes: a drying cylinder 120, a stirring shaft 150, a stirring blade 130 and a driving motor 140; the stirring blade 130 is rotatably arranged in the drying cylinder 120 through the stirring shaft 150; the driving motor 140 is suitable for driving the stirring shaft 150 to rotate, thereby driving the stirring blade 130 to rotate. By arranging the stirring blade 130 in the drying cylinder 120, the granules are stirred by the stirring blade 130, thereby improving the uniformity of drying.

[0029] Due to the conventional stirring blade 130, the fluidity of the pellets at a portion close to the stirring shaft 150 is much lower than the fluidity of the pellets at a portion far from the stirring shaft 150, thereby causing uneven drying.

[0030] See also Figure 3 In some embodiments, each blade 131 of the stirring blade 130 is provided with a pusher 132; a driving member 133 is provided in the blade 131; the driving member 133 is suitable for driving the pusher 132 to move back and forth along the blade 131, thereby pushing the granular material in the drying cylinder 120 to move and increase the fluidity of the granular material. The pusher 132 is provided on the stirring blade 130 in the dryer body 100 to increase the fluidity of the granular material in the dryer body 100, thereby increasing the drying effect.

[0031] See also Figure 4In a preferred embodiment, the blade 131 is provided with a sliding groove 1311 penetrating the top and bottom surfaces of the blade 131; the driving member 133 is arranged in the sliding groove 1311; wherein the driving member 133 comprises: a screw 1331, a sliding block 1332 and a pushing motor. The screw 1331 passes through the sliding block 1332 and is fixedly arranged in the sliding groove 1311; the pushing motor is embedded in the sliding block 1332; and the pushing member 132 is arranged on the sliding block 1332. The pushing member 132 is driven by the driving member 133 to reciprocate along the blade 131, so that the pellets near the stirring shaft 150 are pushed outward along the axial direction, thereby increasing the fluidity of the pellets in the drying tank, thereby ensuring the uniformity of drying.

[0032] Please continue reading Figure 4 In a preferred embodiment, the pusher 132 includes: a pusher plate 1321, a reset torsion spring and a rotating shaft; the reset torsion spring is sleeved on the rotating shaft; the pusher plate 1321 is rotatably connected to the sliding block 1332 via the rotating shaft; when the reset torsion spring is in an initial state, the angle α between the pusher plate 1321 and the sliding direction of the pusher plate 1321 is in the range of 60-80°. By providing the reset torsion spring, the pressure of the pellets on the pusher plate 1321 is buffered, thereby avoiding damage to the pusher plate 1321.

[0033] In some embodiments, the pellet dryer also includes a control module; the control module is electrically connected to the push motor and the drive motor 140 respectively; the control module is configured to control the drive motor 140 to work after the pellets enter the drying cylinder 120, thereby driving the stirring blade 130 to rotate, and control the push motor to work after a preset time T, thereby driving the push plate to move back and forth along the blade 131.

[0034] It should be noted that the preset time T is an artificially set value. By setting the preset time T, the granular material is first stirred by the stirring blades to reduce the resistance of the push plate when it moves along the blades.

[0035] Before the pellets are put into the drying cylinder 120, the control module is further configured to control the pushing motor to work and push the pushing plate toward the stirring shaft 150. After that, the control module is further configured to control the stirring shaft 150 to rotate, so that the side surface of the preceding blade 131 abuts against the end surface of the following blade 131. By abutting the side surface of the preceding blade 131 against the end surface of the following blade 131, it is ensured that when the stirring shaft 150 drives the stirring blade to start rotating, the pressure bearing capacity of the pushing plate 1321 is increased, thereby avoiding damage to the pushing plate 1321.

[0036] At the same time, after the pellets are dried and discharged from the discharge pipe 110, the control module is also configured to control the push motor to push the push plate toward the inner wall of the drying cylinder 120, and make one end of the push plate abut against the inner wall of the drying cylinder 120. After that, the control module is also configured to control the agitation shaft 150 to rotate, so that the push plate cleans the inner wall of the drying cylinder 120. By pushing the push plate 1321 to abut against the inner wall of the drying tank, the inner wall of the drying tank can be cleaned when the agitation shaft 150 rotates.

[0037] In a preferred embodiment, there are multiple stirring blades 130 , which are spaced apart along the axial direction of the stirring shaft 150 .

[0038] See also Figure 5 At least one embodiment further provides a drying method of the pellet dryer as described above, the method comprising: S110: putting pellets into the dryer body 100; S120: stirring the pellets through the dryer body 100; S130: Control the drying assembly 200 to heat the bottom of the dryer body 100 and the discharge pipe 110, so as to dry the pellets.

[0039] In summary, the present invention provides a pellet dryer and a drying method thereof, wherein the pellet dryer comprises: a dryer body 100; a discharge pipe 110 is arranged at the bottom of the dryer body 100; a drying assembly 200 is arranged on the outside of the dryer body 100; wherein the drying assembly 200 comprises: a heating tube 210 and a heat-conducting ring 220; the heat-conducting ring 220 is arranged around the discharge pipe 110 and is fixedly arranged at the bottom of the dryer body 100; the heating tube 210 is arranged outside the heat-conducting ring 220; wherein, when the dryer body 100 dries the pellets put in, the heat-conducting ring 220 is heated by the heating tube 210, thereby heating the bottom of the dryer body 100 and the discharge pipe 110, and completing the drying of the pellets in the dryer body 100. By arranging a heating tube 210 and a heat-conducting ring 220 at the bottom of the dryer body 100, the temperature of the heating tube 210 is evenly distributed to the bottom of the dryer body 100 and the discharge pipe 110 through the heat-conducting ring 220, so that the heat is concentrated to dry the pellets in the dryer body 100, thereby improving the utilization rate of heat.

[0040] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0041] In the above discussion, unless otherwise stated, the terms "about," "approximately," "substantially," etc., when used to describe a numerical value, mean a variation of + / - 10% of the value.

[0042] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pellet dryer, characterized in that: include: Dryer body; A discharge pipe is provided at the bottom of the dryer body; A drying component is arranged on the outside of the dryer body; Wherein, the drying component comprises: a heating tube and a heat conducting ring; The heat-conducting ring is arranged around the discharge pipe and is fixedly arranged at the bottom of the dryer body; The heating tube is arranged outside the heat-conducting ring; When the dryer body dries the pellets put in, the heat-conducting ring is heated by the heating tube, thereby heating the bottom of the dryer body and the discharge pipe to complete the drying of the pellets in the dryer body.

2. The pellet dryer according to claim 1, characterized in that The dryer body comprises: Drying cylinder, stirring shaft, stirring blades and driving motor; The stirring blade is rotatably arranged in the drying cylinder through the stirring shaft; The driving motor is suitable for driving the stirring shaft to rotate, thereby driving the stirring blade to rotate.

3. The pellet dryer according to claim 2, characterized in that: Each blade of the stirring blade is provided with a material pushing piece; A driving member is arranged inside the blade; The driving member is suitable for driving the pushing member to move back and forth along the blades, thereby pushing the granular materials in the drying cylinder to move.

4. The pellet dryer according to claim 3, characterized in that The blade is provided with a sliding groove penetrating through the top surface and the bottom surface of the blade; The driving member is arranged in the sliding groove; Wherein, the driving member includes: a screw rod, a sliding block and a driving motor; The screw rod passes through the sliding block and is fixedly disposed in the sliding groove; The driving motor is embedded in the sliding block; The sliding block is slidably disposed in the sliding groove; The pushing member is arranged on the sliding block.

5. The pellet dryer according to claim 4, characterized in that The pusher comprises: a pusher plate, a return torsion spring and a rotating shaft; The reset torsion spring is sleeved on the rotating shaft; The push plate is rotatably connected to the sliding block via a rotating shaft; When the return torsion spring is in an initial state, the included angle α between the push plate and the sliding direction of the push plate is in the range of 60-80°.

6. The pellet dryer according to claim 5, characterized in that The pellet dryer also includes a control module; The control module is electrically connected to the propulsion motor and the drive motor respectively; The control module is configured to control the driving motor to operate after the pellets enter the drying cylinder, thereby driving the stirring blades to rotate, and control the pushing motor to operate after a preset time T, thereby driving the pushing plate to reciprocate along the blades.

7. The pellet dryer according to claim 6, characterized in that Before the pellets are put into the drying drum, the control module is also configured to control the pushing motor to push the pushing plate toward the stirring shaft. Afterwards, the control module is also configured to control the rotation of the stirring shaft to make the side surface of the previous blade abut against the end surface of the next blade.

8. The pellet dryer according to claim 6, characterized in that After the pellets are dried and discharged from the discharge pipe, the control module is also configured to control the push motor to push the push plate toward the inner wall of the drying cylinder, so that one end of the push plate is against the inner wall of the drying cylinder. Thereafter, the control module is also configured to control the rotation of the stirring shaft, so that the push plate cleans the inner wall of the drying cylinder.

9. The pellet dryer according to claim 2, characterized in that: The number of the stirring blades is plural and they are arranged at intervals along the axial direction of the stirring shaft.

10. A drying method of a pellet dryer according to any one of claims 1 to 9, characterized in that: The method comprises: Put the pellets into the dryer body; Agitation of the pellets through the dryer body; The drying assembly is controlled to heat the bottom of the dryer body and the discharge pipe, thereby drying the pellets.

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