Rotary flash drying machine for chlorinated polyethylene production

Abstract

The utility model relates to the technical field of drying equipment, and provides a rotary flash drying machine for chlorinated polyethylene production, which comprises a processing tower, and a tower base is arranged at the bottom of the processing tower; the inner barrel is rotationally arranged on the tower base and located in the processing tower, a vertical feeding channel is arranged in the inner barrel, an annular drying chamber is formed between the inner barrel and the inner wall of the processing tower, a discharging opening is formed in the upper portion of the feeding channel, materials discharged from the discharging opening are led to the drying chamber, and the tower base is located below the drying chamber; a feeding hole and a connecting rod part are arranged at the bottom of the inner cylinder and are positioned on the peripheral side of the inner cylinder, and after the inner cylinder rotates, the connecting rod part rotates along with the inner cylinder and is used for stirring materials. By means of the technical scheme, the problem that in the prior art, materials which are not pretreated are not evenly distributed in the drying chamber, and drying efficiency and product quality are affected is solved. And water evaporation may cause material bonding blocks, the drying efficiency is affected, and the cleaning difficulty is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of drying equipment, in particular to a rotary flash drying machine used for the production of chlorinated polyethylene. Background Art

[0002] The rotary flash dryer is a highly efficient drying equipment that integrates drying, crushing and grading. Larger and wetter particles are mechanically broken down by the agitator, and particles with lower moisture content and smaller particle size are carried up by the rotating airflow and further dried during the rising process.

[0003] During the production process, chlorinated polyethylene often exists in a state of high moisture content. If the material is directly introduced into the drying chamber without pretreatment, the material may be unevenly distributed in the drying chamber, resulting in overdrying in some areas and wetness in other areas, affecting drying efficiency and product quality. In addition, the evaporation of moisture may cause the material to stick together, blocking the drying chamber, affecting drying efficiency and increasing the difficulty of cleaning. Utility Model Content

[0004] The utility model proposes a rotary flash dryer for the production of chlorinated polyethylene, which solves the problem in the related art that the unpretreated materials are unevenly distributed in the drying chamber, affecting the drying efficiency and product quality. In addition, the evaporation of water may cause the materials to stick together, affecting the drying efficiency and increasing the difficulty of cleaning.

[0005] The technical solution of the utility model is as follows: A rotary flash dryer for producing chlorinated polyethylene, comprising:

[0006] A processing tower, wherein the bottom of the processing tower has a tower base;

[0007] An inner cylinder, the inner cylinder is rotatably arranged on the tower base and is located in the processing tower, a vertical feeding channel is provided inside the inner cylinder, and an annular drying chamber is formed between the inner wall of the processing tower and the inner wall of the processing tower, a discharge port is provided at the upper part of the feeding channel, the material discharged from the discharge port is passed to the drying chamber, and the tower base is located below the drying chamber; a feed port and a connecting rod portion are provided at the bottom of the inner cylinder, the feed port and the connecting rod portion are located on the circumference of the inner cylinder, and after the inner cylinder rotates, the connecting rod portion rotates accordingly, so as to stir the material.

[0008] Optionally, it also includes:

[0009] a first mounting platform, the first mounting platform being rotatably disposed on the inner cylinder;

[0010] A stirring member, wherein the stirring members are provided on the first mounting platform and rotate synchronously with the first mounting platform. The stirring member has a first cleaning part and a second cleaning part. The first cleaning part is close to and used for cleaning the inner wall of the processing tower, and the second cleaning part is close to and used for cleaning the outer wall of the inner cylinder.

[0011] Optionally, the inner cylinder and the first mounting platform rotate in opposite directions, and further comprising:

[0012] a second mounting platform, the second mounting platform being arranged on the processing tower and located below the first mounting platform;

[0013] a first gear ring, wherein the first gear ring is arranged on the inner cylinder;

[0014] a second gear ring, the second gear ring being disposed on the first mounting platform;

[0015] A transmission gear is arranged on the second mounting platform, and the transmission gear is meshed with both the first gear ring and the second gear ring.

[0016] Optionally, it also includes:

[0017] A feeding platform is arranged on the tower base and has a feeding slope, and the feeding slope is inclined toward the feeding port.

[0018] Optionally, the upper portion of the inner cylinder has a discharge port, and further comprises:

[0019] A spiral feeding piece is arranged on the inner cylinder and is located inside the inner cylinder. The feed port faces the lower end of the spiral feeding piece, and the upper end of the spiral feeding piece is close to the discharge port, for conveying materials.

[0020] Optionally, the end of the first cleaning portion has trapezoidal teeth, and the trapezoidal teeth are used to clean the inner wall of the processing tower.

[0021] Optionally, it also includes:

[0022] An air inlet duct is arranged on one side of the processing tower, connecting the inside and outside of the processing tower, and the air inlet duct has two air inlets.

[0023] Optionally, the upper end of the stirring member has an inclined portion, the upper portion of the inner cylinder has a conical bulk portion, the bulk portion has a diameter that gradually increases from top to bottom, and the inclined portion is in contact with the bulk portion.

[0024] The working principle and beneficial effects of the utility model are:

[0025] In the utility model, an annular drying chamber is formed between the inner cylinder and the wall of the processing tower. The material enters the drying chamber through the feeding channel and directly contacts with the high-temperature airflow, and the moisture is evaporated quickly. Preferably, the inner cylinder can be located in the middle of the processing tower. After the material enters the processing tower through the inner cylinder, it can be scattered relatively evenly in the annular drying chamber. The inner cylinder has a vertical feeding channel, which will receive heat transfer in the drying chamber, so that the material can be preheated in the process of passing through the feeding channel, which improves the drying efficiency and optimizes the problem of increased drying difficulty caused by the material still containing a large proportion of moisture when entering the drying chamber. It also reduces the probability that the material is easy to adhere to the inner wall of the processing tower, the outer wall of the inner cylinder and the stirring element. A feed port and a connecting rod are added to the bottom of the inner cylinder. When the inner cylinder rotates, the connecting rod rotates accordingly, exerting a stirring effect, promoting uniform mixing of the material, reducing drying unevenness, and improving material processing efficiency. The overall production efficiency and practicality of the equipment are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0029] Figure 3 It is a schematic diagram of the inner cylinder and some structures of the utility model.

[0030] In the figure: 1. processing tower; 101. drying chamber; 102. tower base; 2. inner cylinder; 201. feeding channel; 202. discharge port; 203. bulk material part; 204. feed port; 205. connecting rod part; 3. stirring member; 301. first cleaning part; 302. second cleaning part; 303. inclined part; 304. trapezoidal gear; 4. first mounting platform; 5. second mounting platform; 6. first gear ring; 7. second gear ring; 8. transmission gear; 9. feeding platform; 901. feeding slope; 10. spiral feeding member; 11. air inlet; 1101. air inlet. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0032] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0033] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] Reference Figure 1~Figure 3 , which is an embodiment of the utility model, proposes a rotary flash dryer for the production of chlorinated polyethylene, comprising: a processing tower 1, the bottom of the processing tower 1 is provided with a tower base 102; an inner cylinder 2, the inner cylinder 2 is rotatably arranged on the tower base 102 and is located in the processing tower 1, the inner cylinder 2 has a vertical feeding channel 201 inside, and an annular drying chamber 101 is formed between the inner wall of the processing tower 1, the upper part of the feeding channel 201 is provided with a discharge port 202, the material discharged from the discharge port 202 is passed to the drying chamber 101, and the tower base 102 is located below the drying chamber 101; the bottom of the inner cylinder 2 is provided with a feed port 204 and a connecting rod portion 205, the feed port 204 and the connecting rod portion 205 are located on the circumference of the inner cylinder 2, after the inner cylinder 2 rotates, the connecting rod portion 205 rotates accordingly, and is used to stir the material.

[0036] It also includes: a first mounting platform 4, which is rotatably arranged on the inner tube 2; a stirring member 3, which has a plurality of stirring members 3, and the plurality of stirring members 3 are arranged on the first mounting platform 4 and rotate synchronously with the first mounting platform 4, and the stirring member 3 has a first cleaning part 301 and a second cleaning part 302, the first cleaning part 301 is close to and used for cleaning the inner wall of the processing tower 1, and the second cleaning part 302 is close to and used for cleaning the outer wall of the inner tube 2.

[0037] The inner cylinder 2 and the first mounting platform 4 have opposite rotation directions, and further include: a second mounting platform 5, which is arranged on the processing tower 1 and is located below the first mounting platform 4; a first ring gear 6, which is arranged on the inner cylinder 2; a second ring gear 7, which is arranged on the first mounting platform 4; a transmission gear 8, which is arranged on the second mounting platform 5, and the transmission gear 8 is meshed with both the first ring gear 6 and the second ring gear 7.

[0038] The tower also includes a feeding platform 9 , which is disposed on the tower base 102 and has a feeding slope 901 , and the feeding slope 901 is inclined toward the feeding port 204 .

[0039] The upper part of the inner cylinder 2 has a discharge port 202, and also includes: a spiral feeding piece 10, which is arranged on the inner cylinder 2 and located inside the inner cylinder 2, with a feed port 204 facing the lower end of the spiral feeding piece 10, and the upper end of the spiral feeding piece 10 is close to the discharge port 202 for conveying materials.

[0040] The end of the first cleaning portion 301 has a trapezoidal tooth 304 , and the trapezoidal tooth 304 is used to clean the inner wall of the processing tower 1 .

[0041] It also includes: an air inlet duct 11, which is arranged on one side of the processing tower 1 and connects the inside and the outside of the processing tower 1. The air inlet duct 11 has two air inlets 1101.

[0042] The upper end of the stirring element 3 has an inclined portion 303 , and the upper part of the inner cylinder 2 has a conical bulk material portion 203 . The bulk material portion 203 gradually increases in diameter from top to bottom, and the inclined portion 303 contacts the bulk material portion 203 .

[0043] In this embodiment, the processing tower 1 can be a vertical structure, and an annular drying chamber 101 is formed between the inner cylinder 2 and the tower wall of the processing tower 1. The material enters the drying chamber 101 through the feeding channel 201, directly contacts with the high-temperature airflow, and the water is evaporated quickly. Preferably, the inner cylinder 2 can be located in the middle of the processing tower 1. After the material enters the processing tower 1 through the inner cylinder 2, it can be relatively evenly scattered in the annular drying chamber 101, and the inner cylinder 2 has a vertical feeding channel 201, which will receive the heat transfer in the drying chamber 101, so that the material can be preheated in the process of passing through the feeding channel 201, thereby improving the drying efficiency, optimizing the problem that the material still contains a large proportion of water when entering the drying chamber 101, and reducing the probability that the material is easy to adhere to the inner wall of the processing tower 1, the outer wall of the inner cylinder 2 and the stirring member 3. The two stirring members 3 rotate around the central axis of the inner cylinder 2 to stir, crush and scatter the material entering the drying chamber 101. The stirring member 3 has a first cleaning part 301 and a second cleaning part 302. The end of the first cleaning part 301 is close to the inner wall of the processing tower 1, and can be slightly in contact or maintain a small gap to achieve the effect of being able to clean without scratching the inner wall of the processing tower 1. When the stirring member 3 rotates, the end of the first cleaning part 301 can effectively scrape off the residual materials attached to the inner wall of the processing tower 1 to keep the inner wall clean. The second cleaning part 302 is close to the outer wall of the inner cylinder 2, and cleans the attachments on the outer wall of the inner cylinder 2 to avoid accumulation. The upper part of the inner cylinder 2 has a conical bulk material part 203. The conical design helps to provide an inclined guide for the material when it enters the drying chamber 101, reduces the risk of material accumulation and blockage, and makes it evenly dispersed, reduces concentrated accumulation, increases the contact area between hot air and materials, and accelerates the drying process. The upper end of the stirring member 3 has an inclined part 303, and the inclined part 303 forms an effective contact with the surface of the conical bulk material part 203. This contact not only causes the material to slide along the conical surface, but also helps the material to be quickly and evenly dispersed through the stirring force, accelerates the evaporation of water, shortens the drying time, prevents the material from adhering to the cylinder wall, and ensures the circulation of hot air. The processing tower 1 has a tower base 102 at the bottom, the inner cylinder 2 is rotatably set on the tower base 102, and the first mounting platform 4 is rotatably set on the inner cylinder 2, forming a multi-level rotation system. The second mounting platform 5 is set on the processing tower 1, kept stable and fixed, and is located under the first mounting platform 4. The first ring gear 6 is set on the inner cylinder 2, and the second ring gear 7 is set on the first mounting platform 4. Both are engaged with the transmission gear 8, and accurate rotation transmission is achieved through the transmission gear 8.

[0044] Specifically, when the inner cylinder 2 rotates, the first gear ring 6 rotates accordingly, driving the transmission gear 8 to rotate, and further driving the second gear ring 7 to rotate. At this time, the first mounting platform 4 and the inner cylinder 2 rotate in opposite directions;

[0045] The rotation of the inner cylinder 2 can apply centrifugal force to the material in the feeding channel 201. When the material moves out of the feeding channel 201, it will have a tendency to initially rotate and disperse under the action of centrifugal force. The rotation direction of the first mounting platform 4 is opposite to that of the inner cylinder 2. Correspondingly, the rotation direction of the two stirring members 3 is opposite to the initial rotation and dispersion direction of the material. The opposite rotation can further improve the impact crushing effect, improve the degree of material dispersion, and improve the uniformity and drying efficiency of heat drying. A feed port 204 and a connecting rod 205 are added to the bottom of the inner cylinder 2. The material is gathered at the feed port 204 through the feed slope 901 of the feed platform 9. The inclined design of the feed slope 901 utilizes the principle of gravity, so that the material can slide to the feed port 204 more smoothly, reduce feed blockage, and improve the continuity of material addition. When the inner cylinder 2 rotates, the connecting rod 205 rotates accordingly, exerting a stirring effect, promoting uniform mixing of materials, reducing drying unevenness, and improving material processing efficiency. The overall production efficiency and practicality of the equipment are improved. The spiral feeder 10 is located inside the inner tube 2. The lower end of the spiral feeder 10 faces the feed port 204, and the upper end is close to the discharge port 202. This layout ensures a continuous and efficient conveying path for the material from bottom to top. The end of the first cleaning part 301 is provided with trapezoidal teeth 304. During the rotation of the stirring member 3, the trapezoidal teeth 304 can further improve the cleaning efficiency and crushing effect, ensure the uniform exchange of hot air and materials, improve the uniformity of drying, improve the quality of the final product, and adapt to high-standard production requirements. An air inlet 11 is added on one side of the processing tower 1 to connect the inside and outside of the processing tower 1. There are two air inlets in the air inlet 11, which can improve the uniformity of gas flow distribution. Compared with a single air inlet, the cross-sectional area of ​​each air inlet is smaller, which increases the gas flow rate, improves the drying efficiency, avoids the waste of excess gas, reduces energy consumption, adapts to green production needs, and improves production economy.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A spin flash dryer for the production of chlorinated polyethylene, characterized in that: include: A processing tower (1), wherein the bottom of the processing tower (1) has a tower base (102); An inner cylinder (2), the inner cylinder (2) is rotatably arranged on the tower base (102) and is located in the processing tower (1), the inner cylinder (2) has a vertical feeding channel (201) inside, and forms an annular drying chamber (101) between the inner cylinder (2) and the inner wall of the processing tower (1), the upper part of the feeding channel (201) has a discharge port (202), the material discharged from the discharge port (202) passes into the drying chamber (101), and the tower base (102) is located below the drying chamber (101); the bottom of the inner cylinder (2) has a feed port (204) and a connecting rod portion (205), the feed port (204) and the connecting rod portion (205) are located on the circumference of the inner cylinder (2), after the inner cylinder (2) rotates, the connecting rod portion (205) rotates accordingly, and is used to stir the material.

2. A spin flash dryer for the production of chlorinated polyethylene according to claim 1, characterized in that: Also includes: A first mounting platform (4), the first mounting platform (4) being rotatably disposed on the inner cylinder (2); A stirring member (3), wherein the stirring members (3) are in plurality, and the plurality of stirring members (3) are arranged on the first mounting platform (4) and rotate synchronously with the first mounting platform (4). The stirring member (3) comprises a first cleaning portion (301) and a second cleaning portion (302), wherein the first cleaning portion (301) is close to and used for cleaning the inner wall of the processing tower (1), and the second cleaning portion (302) is close to and used for cleaning the outer wall of the inner cylinder (2).

3. A spin flash dryer for the production of chlorinated polyethylene according to claim 2, characterized in that: The inner cylinder (2) and the first mounting platform (4) rotate in opposite directions, and further include: A second mounting platform (5), the second mounting platform (5) being arranged on the processing tower (1) and located below the first mounting platform (4); A first gear ring (6), wherein the first gear ring (6) is arranged on the inner cylinder (2); A second gear ring (7), wherein the second gear ring (7) is arranged on the first mounting platform (4); A transmission gear (8), wherein the transmission gear (8) is arranged on the second mounting platform (5), and the transmission gear (8) is meshed with both the first gear ring (6) and the second gear ring (7).

4. A spin flash dryer for the production of chlorinated polyethylene according to claim 1, characterized in that: Also includes: A feeding platform (9), the feeding platform (9) is arranged on the tower base (102), and has a feeding slope (901), wherein the feeding slope (901) is inclined toward the feeding port (204).

5. A spin flash dryer for the production of chlorinated polyethylene according to claim 1, characterized in that: The upper portion of the inner cylinder (2) is provided with a discharge port (202), and further comprises: A spiral feeding member (10), wherein the spiral feeding member (10) is arranged on the inner cylinder (2) and is located inside the inner cylinder (2); the feed port (204) faces the lower end of the spiral feeding member (10); and the upper end of the spiral feeding member (10) is close to the discharge port (202), and is used for conveying materials.

6. A spin flash dryer for the production of chlorinated polyethylene according to claim 2, characterized in that: The end of the first cleaning portion (301) is provided with trapezoidal teeth (304), and the trapezoidal teeth (304) are used to clean the inner wall of the processing tower (1).

7. A spin flash dryer for the production of chlorinated polyethylene according to claim 1, characterized in that: Also includes: An air inlet duct (11), the air inlet duct (11) is arranged on one side of the processing tower (1) and connects the inside and the outside of the processing tower (1), and the air inlet duct (11) has two air inlets (1101).

8. A spin flash dryer for the production of chlorinated polyethylene according to claim 2, characterized in that: The upper end of the stirring element (3) has an inclined portion (303), the upper part of the inner cylinder (2) has a conical bulk material portion (203), the diameter of the bulk material portion (203) gradually increases from top to bottom, and the inclined portion (303) is in contact with the bulk material portion (203).

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