Spiral blade and spiral conveying mechanism thereof and dryer and working method thereof

Abstract

The present invention belongs to the technical field of dryers, and in particular, relates to a spiral blade and a spiral conveying mechanism thereof, a dryer and a working method thereof. The device comprises: at least one conveying section and at least one lifting section; wherein the outer diameter of the lifting section is larger than the outer diameter of the conveying section; and the end of the lifting section is connected to the end of the conveying section. By providing the lifting section and making the outer diameter of the lifting section larger than the outer diameter of the conveying section, the lifting section can convey more materials, and the materials are less likely to be thrown out during conveying, thereby forming a section that can stably convey materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of dryers, and in particular to the field of drying equipment for removing liquid from solid materials or products, and specifically to a spiral blade and a spiral conveying mechanism thereof, a dryer and a working method thereof. Background Art

[0002] When drying materials, the vertical spiral dryer conveys the materials through spiral blades. However, since the spiral blades rotate continuously, some materials will be thrown out of the spiral blades under the action of centrifugal force during the conveying process and fall to the bottom of the dryer. Such a cycle can easily cause material accumulation at the bottom of the dryer and low material conveying efficiency.

[0003] Therefore, it is urgent to design a spiral blade and its spiral conveying mechanism and its dryer and its working method to solve the technical problem that the spiral blade throws out the material when rotating, causing the material to accumulate at the bottom of the dryer.

[0004] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0005] The embodiments of the present disclosure at least provide a spiral blade, a spiral conveying mechanism, a dryer and a working method thereof.

[0006] In a first aspect, an embodiment of the present disclosure provides a spiral blade, comprising: at least one conveying section and at least one lifting section;

[0007] Wherein, the outer diameter of the lifting section is larger than the outer diameter of the conveying section;

[0008] The end of the lifting section is connected to the end of the conveying section;

[0009] The lifting section and the conveying section are connected alternately in sequence.

[0010] In a second aspect, the present disclosure also provides a spiral conveying mechanism, including the spiral blade as described above, and the spiral conveying mechanism further includes:

[0011] The spiral blades are mounted on the outer wall of the rotating shaft.

[0012] In an optional embodiment, the outer side wall of the lifting section has a rib.

[0013] In a third aspect, the present disclosure also provides a dryer using the screw conveying mechanism as described above, and the dryer further includes:

[0014] The drying barrel, the spiral conveying mechanism is rotatably arranged inside the drying barrel.

[0015] In an optional embodiment, one side of the drying barrel has a loading port;

[0016] The lifting section corresponds to the position of the loading port.

[0017] In an optional embodiment, one side of the drying barrel further has a feeding port;

[0018] The spiral blade is located between the upper material opening and the lower material opening.

[0019] In a fourth aspect, the embodiment of the present disclosure further provides a working method, which is performed using the dryer as described above. When drying materials, the conveying section and the lifting section are both provided as one, and the lifting section is provided below the conveying section. After the materials enter the drying barrel, the rotating shaft rotates so that the lifting section conveys the materials to the conveying section to free up space at the bottom of the drying barrel.

[0020] When cooling the material, the conveying section and the lifting section are both set as one, and the lifting section is set above the conveying section. After the material enters the drying barrel, the rotating shaft rotates to cool the material in the drying barrel. After the material is cooled, the rotating shaft accelerates, and the conveying section transports the material to the lifting section, and the lifting section transports the material to ensure stable material discharge;

[0021] When cooling the material in sections, the conveying sections and lifting sections are set to several numbers, and the lifting sections and the conveying sections are installed alternately in sequence. After the material enters the drying barrel, the shaft rotates to cool the material in the drying barrel. When the shaft accelerates, the material passes through the corresponding lifting sections and conveying sections in sequence upward. When the shaft decelerates, the material circulates between the lifting section below it and the corresponding conveying section above the lifting section.

[0022] The beneficial effect of the present invention is that by setting a lifting section and making the outer diameter of the lifting section larger than the outer diameter of the conveying section, the lifting section can convey more materials, and the materials are less likely to be thrown out during conveyance, thereby forming a section that can stably convey materials.

[0023] 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 and the drawings.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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.

[0026] Figure 1 A three-dimensional diagram of a dryer provided in an embodiment of the present disclosure;

[0027] Figure 2 A schematic diagram of a first internal structure of a dryer provided in an embodiment of the present disclosure;

[0028] Figure 3 A schematic diagram of a second internal structure of a dryer provided in an embodiment of the present disclosure;

[0029] Figure 4 A first stereoscopic diagram of a spiral conveying mechanism provided in an embodiment of the present disclosure;

[0030] Figure 5 A second stereoscopic diagram of a spiral conveying mechanism provided in an embodiment of the present disclosure;

[0031] Figure 6 A third stereoscopic diagram of a spiral conveying mechanism provided in an embodiment of the present disclosure;

[0032] Figure 7 This is a fourth stereoscopic view of a spiral conveying mechanism provided in an embodiment of the present disclosure.

[0033] In the figure:

[0034] 1. Conveying section; 2. Lifting section; 3. Rotating shaft; 4. Sidewall;

[0035] 5. Drying barrel; 51. Loading port; 52. Unloading port. DETAILED DESCRIPTION

[0036] 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.

[0037] Research has found that due to the continuous rotation of the spiral blades, some materials will be thrown out of the spiral blades under the action of centrifugal force during the conveying process and fall to the bottom of the dryer. Such a cycle can easily cause material accumulation at the bottom of the dryer and low material conveying efficiency.

[0038] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present disclosure for the above problems below should be the contributions made by the inventor to the present disclosure during the disclosure process.

[0039] In the following, some embodiments of the present invention are described in detail 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. In addition, in the accompanying drawings, in order to effectively describe the technical content, the thickness of the components can be exaggerated or reduced.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] Based on the above research, Figure 4 , the disclosed embodiment provides a spiral blade, including: at least one conveying section 1 and at least one lifting section 2, the outer diameter of the lifting section 2 is larger than the outer diameter of the conveying section 1. The end of the lifting section 2 is connected to the end of the conveying section 1. When the spiral blade is used to convey materials, the spiral blade rotates continuously, and then scoops up the material through the tail end of the blade, and then continuously conveys the material. When the spiral blade is placed, it is generally divided into two types: vertical and horizontal. In some cases, it is also arranged in an inclined form. Taking the vertical placement as an example, in some embodiments, a lifting section 2 with a larger outer diameter is provided on the spiral blade, so that the area of ​​the upper surface of the lifting section 2 is significantly increased, and the radial length is increased, so that this part can receive more materials. At the same time, when the material is conveyed by the lifting section 2, it is less likely to be thrown out under the action of centrifugal force. Therefore, the lifting section 2 can form a stable conveying area, and the lifting section 2 can have a better conveying efficiency for the material compared with the conveying section 1.

[0042] refer to Figure 4 In at least one embodiment, the lifting section 2 and the conveying section 1 are both configured as one, and the head of the lifting section 2 is connected to the tail of the conveying section 1, that is, the lifting section 2 is located below the conveying section 1. This configuration is applied when loading materials. If there is material accumulation at the bottom of the dryer, the lifting section 2 can be used to quickly lift the material at the bottom of the dryer to the top of the lifting section 2, thereby freeing up space at the bottom of the dryer, so as not to hinder the loading process.

[0043] refer to Figure 7In at least one embodiment, the lifting section 2 and the conveying section 1 are both set as one, and the tail of the lifting section 2 is connected to the head of the conveying section 1, that is, the lifting section 2 is located above the conveying section 1. This setting can be used to cool the material. When the hot material enters the dryer, it is cooled inside the dryer. When the material is cooled and unloaded, the conveying section 1 transports the material to the lifting section 2. At this time, the lifting section 2 can greatly reduce the probability of material falling and realize stable material unloading.

[0044] refer to Figure 6 In at least one embodiment, the lifting sections 2 are set to two, the conveying section 1 is set to one, and the lifting sections 2 and the conveying section 1 are staggered in sequence, that is, the conveying section 1 is set in the middle, and the two lifting sections 2 are respectively set at the two ends of the conveying section 1. This setting can be used to cool the material. When the hot material enters the dryer, the lifting section 2 below the conveying section 1 conveys the material to the conveying section 1 as soon as possible to avoid the accumulation of materials at the bottom of the dryer and affect the loading process. At the same time, the speed of the spiral blade is adjusted to a certain range so that the conveying rate of the material by the conveying section 1 and the material drop rate reach a balanced state, that is, after the material enters the conveying section 1 from the bottom lifting section 2, it will be completely dropped during the conveying process of the conveying section 1 and returned to the bottom lifting section 2, and then it will be conveyed again, and so on. The cycle is repeated to achieve the retention of the material in the dryer for a certain period of time, so that the material can be fully dried. The condition for achieving the balanced state of the conveying rate and the drop rate of the material by the above-mentioned conveying section 1 is related to the speed of the spiral blade. Therefore, the operator can fully debug within a limited experiment to obtain the speed range. After obtaining the speed range, the speed of the spiral blade can be adjusted to control the residence time of the material in the dryer. When the material is fully dried, the speed of the spiral blade can be increased to allow the material to break through the conveying section 1 and move to the top lifting section 2, and then the material can be discharged through the lifting section 2.

[0045] On the other hand, in some embodiments, the lifting section 2 and the conveying section 1 are both set to multiple, and the lifting section 2 and the conveying section 1 are staggered and connected in sequence. This setting is used to cool the material in sections. Specifically, a lifting section 2 and a conveying section 1 form a combination, in which the lifting section 2 is at the bottom and the conveying section 1 is at the top, thereby dividing the interior of the dryer from low to high into multiple areas. In the equilibrium state of the conveying rate and the drop rate of the material, in each area, the lifting section 2 conveys the material to the conveying section 1, and the conveying section 1 drives the material conveying amount to be the same as the drop amount, so that the material will not enter the next area, that is, in each area, the material circulates between the lifting section 2 and the conveying section 1. Then, when the speed of the spiral blade increases, each conveying section 1 conveys the material to the upper area, and then the spiral blade slows down again and returns to the equilibrium state, so that the effect of segmented cooling can be achieved. According to the above-mentioned usage, by controlling the speed of the rotating shaft, the drying process of the material can be controlled, that is, after a speed switching cycle, the material is conveyed upward by one layer, the upper layer of the material is drier than the lower layer of the material, and the drying effect of each layer increases layer by layer. Since the materials are clearly divided according to the degree of dryness, the materials can be continuously loaded. That is, by adopting a special arrangement of multiple lifting sections 2 and conveying sections 1, it is possible to not only quickly load or unload the materials, but also realize the function of continuous loading of the dryer, which greatly improves the production efficiency of the dryer.

[0046] In addition, the embodiment of the present disclosure further provides a spiral conveying mechanism, including the spiral blades shown above, and the spiral conveying mechanism also includes: a rotating shaft 3, and the spiral blades are installed on the outer wall of the rotating shaft 3. The rotating shaft 3 is used to connect the spiral blades and is installed on the dryer to position the spiral blades.

[0047] Reference Figure 5 In at least one embodiment, the outer side wall of the lifting section 2 has a rib 4, which surrounds the outer edge of the lifting section 2 and is arranged upward. The rib 4 can further prevent the material on the lifting section 2 from being thrown out, thereby improving the conveying stability of the lifting section 2 for the material. Optionally, the lifting section 2 with the rib 4 is set at the bottom of the spiral conveying mechanism and installed in the dryer. At this time, the lifting section 2 can quickly scoop up the material at the bottom of the dryer and convey it upward. At the same time, the rib 4 can prevent the material from falling back to the bottom of the dryer as much as possible, thereby making room for the material to be loaded and preventing the old material from being mixed with the new material.

[0048] In addition, refer to Figure 2The embodiment of the present disclosure also provides a dryer, using the spiral conveying mechanism as shown above, and the dryer also includes: a drying barrel 5, the spiral conveying mechanism is installed in the drying barrel 5, and the top and bottom of the spiral conveying mechanism are respectively connected to the drying barrel 5 for rotation. A power source, such as a servo motor, can be installed on the drying barrel 5, and the rotating shaft 3 of the spiral conveying mechanism is connected to the power source for transmission, so that the power source can drive the rotating shaft 3 to rotate. Optionally, the servo motor is connected to the rotating shaft 3 through a belt to drive the rotating shaft 3 to rotate.

[0049] Reference Figure 2 In some embodiments, one side of the drying barrel 5 also has a discharge port 52 , and the spiral blade is located between the upper port 51 and the lower port 52 . When the material moves to the end of the spiral blade, i.e., the top, it can be discharged from the drying barrel 5 through the discharge port 52 .

[0050] When the spiral conveying mechanism is used for cooling as described above, it can be applied to the cooling of special materials after drying. Therefore, the loading ports 51 and unloading ports 52 of multiple drying barrels 5 can be connected in sequence, so that the materials can be unloaded from the previous drying barrel 5 and then enter the next drying barrel 5, and then the production process of drying first and then cooling can be carried out in the continuous drying barrels 5. That is, the production process of first drying and then cooling can be adopted. Figure 4 The spiral conveying mechanism shown in the figure dries the material in the drying barrel 5, and when the material runs to the drying barrel 5 at the end, the material is dried by Figure 6 or Figure 7 The spiral conveying mechanism cools the material.

[0051] Reference Figure 1 In at least one embodiment, a loading port 51 is provided on one side of the drying barrel 5, and materials can be loaded into the drying barrel 5 through the loading port 51. Figure 2 , the lifting section 2 corresponds to the position of the feeding port 51. Specifically, if the feeding port 51 is located at the bottom of the drying barrel 5, the lifting section 2 is also located at the bottom of the drying barrel 5; if the feeding port 51 is located in the middle of the drying barrel 5, the lifting section 2 is also located in the middle of the drying barrel 5, so as to ensure that the lifting section 2 can lift the materials introduced by the feeding port 51 upward in time to make room for subsequent materials to enter.

[0052] Reference Figure 3 In some embodiments, the outer side wall of the lifting section 2 has a rib 4. The rib 4 surrounds the outer edge of the lifting section 2 and is arranged upward. The rib 4 can further prevent the material on the lifting section 2 from being thrown out, thereby improving the transportation stability of the material by the lifting section 2. After the material is scooped up by the lifting section 2, the rib 4 can prevent the material from falling back to the bottom of the dryer as much as possible, thereby making room for the material to be loaded.

[0053] In addition, the embodiment of the present disclosure also provides a working method, which is performed using the dryer shown above. The working method is specifically as follows:

[0054] When drying materials, the conveying section 1 and the lifting section 2 are both set as one, and the lifting section 2 is set below the conveying section 1. After the material enters the drying barrel 5, the rotating shaft 3 rotates so that the lifting section 2 conveys the material to the conveying section 1 to free up space at the bottom of the drying barrel 5; when cooling materials, the conveying section 1 and the lifting section 2 are both set as one, and the lifting section 2 is set above the conveying section 1. After the material enters the drying barrel 5, the rotating shaft 3 rotates so that the material is cooled in the drying barrel 5. After the material is cooled, the rotating shaft 3 accelerates, the conveying section 1 conveys the material to the lifting section 2, and the lifting section 2 conveys the material so that the material is discharged stably; when cooling the material in sections, the conveying section 1 and the lifting section 2 are both set as several, and the lifting section 2 and the conveying section 1 are installed alternately in sequence. After the material enters the drying barrel 5, the rotating shaft 3 rotates so that the material is cooled in the drying barrel 5. When the rotating shaft 3 accelerates, the material passes through the corresponding lifting section 2 and the conveying section 1 upward in sequence. When the rotating shaft 3 decelerates, the material circulates between the lifting section 2 below it and the corresponding conveying section 1 above the lifting section 2.

[0055] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. With the above-mentioned ideal embodiments of the present invention as inspiration, through the above-mentioned description content, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention.

Claims

1. A working method of a spiral dryer, characterized in that: include: A spiral dryer comprising a drying barrel (5) and a spiral conveying mechanism, wherein the spiral conveying mechanism is rotatably arranged inside the drying barrel (5); The spiral conveying mechanism comprises a rotating shaft (3) and a spiral blade, wherein the spiral blade is mounted on the outer wall of the rotating shaft (3); The spiral blade comprises at least one conveying section (1) and at least one lifting section (2); Wherein, the outer diameter of the lifting section (2) is greater than the outer diameter of the conveying section (1); The end of the lifting section (2) is connected to the end of the conveying section (1); The lifting section (2) and the conveying section (1) are connected in an alternating manner in sequence; When drying materials, the conveying section (1) and the lifting section (2) are both provided as one, and the lifting section (2) is provided below the conveying section (1). After the materials enter the drying barrel (5), the rotating shaft (3) rotates so that the lifting section (2) conveys the materials to the conveying section (1), thereby freeing up space at the bottom of the drying barrel (5); When cooling the material, the conveying section (1) and the lifting section (2) are both provided as one, and the lifting section (2) is provided above the conveying section (1). After the material enters the drying barrel (5), the rotating shaft (3) rotates to cool the material in the drying barrel (5). After the material is completely cooled, the rotating shaft (3) accelerates, and the conveying section (1) conveys the material to the lifting section (2). The lifting section (2) conveys the material to ensure that the material is discharged stably. When cooling the material in sections, a plurality of conveying sections (1) and lifting sections (2) are provided, and the lifting sections (2) and conveying sections (1) are installed alternately in sequence. After the material enters the drying barrel (5), the rotating shaft (3) rotates to cool the material in the drying barrel (5). When the rotating shaft (3) accelerates, the material passes through the corresponding lifting sections (2) and conveying sections (1) in sequence upward. When the rotating shaft (3) decelerates, the material circulates between the lifting section (2) below it and the corresponding conveying section (1) above the lifting section (2).

2. The working method of the spiral dryer according to claim 1, characterized in that: The outer side wall of the lifting section (2) has a retaining edge (4).

3. The working method of the spiral dryer according to claim 1, characterized in that: One side of the drying barrel (5) is provided with a loading port (51); The lifting section (2) corresponds to the position of the loading port (51).

4. The working method of the spiral dryer according to claim 1, characterized in that: One side of the drying barrel (5) also has a material discharge port (52); The spiral blade is located between the upper material opening (51) and the lower material opening (52).

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