Rotary drum assembly for centrifugal clarification

Abstract

The utility model discloses a rotary drum assembly for centrifugal clarification, which comprises a rotary drum for receiving external power, an annular protruding part connected with the bottom in the rotary drum is arranged at the bottom in the rotary drum, a pipeline for introducing latex is arranged in the rotary drum, a plurality of distributed flow guide pipes are arranged on the surface of the pipeline, and the bottom of the pipeline abuts against the top of the protruding part. A plurality of limiting columns are arranged on the inner wall of the rotary drum, a top cover is sleeved outside the pipeline, a plurality of cavity separating plates fixedly connected with the pipeline are arranged at the top of the pipeline, the top cover abuts against the limiting columns and the cavity separating plates respectively, a rotary drum cover is arranged above the top cover, and a low-concentration latex outlet and a high-concentration latex outlet are formed in the rotary drum cover. An annular separation part is arranged on the inner circumference of the rotary drum cover, the separation part is used for independently separating the low-concentration latex outlet from the high-concentration latex outlet, the pipeline penetrates through the top cover and the rotary drum cover, and the device can effectively remove metal ions harmful to natural rubber and can separate two types of latex which are different in concentration and can be properly adjusted.

Description

Technical Field

[0001] This utility model relates to the field of rubber processing, and in particular to a drum assembly for centrifugal clarification. Background Technology

[0002] In the natural rubber primary processing industry, the main products processed include dry rubber products (such as smoked sheets, air-dried sheets, technically graded rubber or standard rubber, etc.) and concentrated latex (high-ammonia, medium-ammonia, low-ammonia, and ammonia-free centrifuged concentrated latex, paste-like concentrated latex, etc.). Among them, the sedimentation and clarification process is mainly used to remove denser mud and sand, as well as insoluble phosphates produced by the reaction of calcium and magnesium ions with soluble phosphates in the latex. However, the traditional sedimentation and clarification process requires the use of several large-capacity clarification tanks or clarification pools. In order to accelerate sedimentation and improve the removal of impurities and non-rubber substances from the latex, some domestic natural rubber primary processing enterprises have used centrifugal sedimentation devices before fresh latex enters the clarification tanks / pools. Centrifugal sedimentation devices have a simple structure but low rotation speed, and are not effective in removing non-rubber substances originally present in fresh latex. They can only remove foreign impurities such as mud and sand, and can only be used for the treatment of fresh latex before clarification. They cannot replace the clarification process, and their use effect is not good. Utility Model Content

[0003] In view of the above-mentioned existing problems, the technical problem to be solved by this utility model is a drum assembly for centrifugal clarification that can effectively remove metal ions that are harmful to natural rubber and can separate latexes of different concentrations.

[0004] This utility model provides a rotary drum assembly for centrifugal clarification, including a rotary drum for receiving external power, an annular protrusion connected to the bottom of the rotary drum, a pipe for introducing latex inside the rotary drum, a plurality of distributed guide tubes on the surface of the pipe, the bottom of the pipe abutting against the top of the protrusion, a plurality of limiting posts on the inner wall of the rotary drum, a top cover covering the outside of the pipe, a plurality of partition plates fixedly connected to the top of the pipe, the top cover abutting against the limiting posts and the partition plates respectively, a rotary drum cover above the top cover, a low-concentration latex outlet and a high-concentration latex outlet on the rotary drum cover, an annular partition on the inner circumference of the rotary drum cover, the partition separating the low-concentration latex outlet and the high-concentration latex outlet independently, the pipe passing through the top cover and the rotary drum cover, and the rotary drum cover and the rotary drum being fixed together by a locking assembly.

[0005] Furthermore, the locking assembly includes a retaining ring, the top of which is provided with an annular protrusion, the bottom of which abuts against the drum cover, and the retaining ring is detachably connected to the outer wall of the drum.

[0006] Furthermore, it also includes a vertical shaft, which is connected to the drum and is used to receive external power input.

[0007] Furthermore, the cross-section of the pipe is in the shape of an inverted trumpet.

[0008] Furthermore, the guide tubes are evenly distributed on the surface of the pipe, the limiting posts are evenly distributed on the inner wall of the drum, and the partition plates are evenly distributed on the top of the pipe.

[0009] Furthermore, it also includes a vertical shaft cap, which secures the vertical shaft and the rotating drum together.

[0010] Furthermore, a first sealing ring is provided between the vertical shaft cap and the rotating drum, and a second sealing ring is provided between the rotating drum and the rotating drum cover.

[0011] Furthermore, a feed hopper for introducing latex is provided above the pipe, and an adjusting pipe connected to the bottom of the feed hopper is provided thereto, and the adjusting pipe is connected to the pipe.

[0012] Furthermore, an adjusting screw is provided inside the low-concentration latex outlet.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention relates to a rotary drum assembly for centrifugal clarification. Latex to be processed is introduced into the rotary drum through a pipe. The drum rotates continuously after receiving external power, thoroughly centrifuging and separating the latex remaining within it. By adjusting the power frequency of the external power source, the centrifugal factor during rotation is controlled within a reasonable range. This centrifugation effectively reduces the metal ion content in the latex. During the centrifugal process, the latex, under centrifugal force, flows through the guide pipe into the cavity formed between the pipe, the top cover, and the partition plate. Further separation occurs under centrifugal action for a certain period, with continued introduction of latex into the drum. Centrifugal separation gradually separates the latex into low-concentration and high-concentration latex. Due to the greater centrifugal force experienced by the low-concentration latex, it flows through the channel formed between adjacent limiting posts and into the cavity between the top cover and the drum cover, allowing it to be discharged through the low-concentration latex outlet. Conversely, due to the smaller centrifugal force experienced by the high-concentration latex, it flows out through the channel formed between the pipe, top cover, drum cover, and separator, eventually being discharged to the outside through the high-concentration latex outlet. In this way, the device can effectively separate and retain the metal ion content within the drum. Both the separated high-concentration and low-concentration latex can be discharged through different channels, effectively ensuring the quality of the latex and production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front-view cross-sectional view of a rotary drum assembly for centrifugal clarification according to the present invention.

[0017] Figure 2 This is a top view of a rotary drum assembly for centrifugal clarification according to the present invention.

[0018] In the diagram, 1 is the drum, 2 is the protrusion, 3 is the pipe, 4 is the guide pipe, 5 is the limiting post, 6 is the top cover, 7 is the partition plate, 8 is the drum cover, 9 is the low-concentration latex outlet, 10 is the high-concentration latex outlet, 11 is the partition, 12 is the fixing ring, 13 is the adjusting screw, 14 is the annular protrusion, 15 is the vertical shaft, 16 is the vertical shaft cap, 17 is the first sealing ring, 18 is the second sealing ring, 19 is the feed hopper, and 20 is the adjusting pipe. Detailed Implementation

[0019] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0020] See Figures 1 to 2 This utility model provides a rotary drum assembly for centrifugal clarification, including a rotary drum 1 for receiving external power. The bottom of the rotary drum 1 has an annular protrusion 2 connected thereto. The rotary drum 1 also has a pipe 3 for introducing latex. The surface of the pipe 3 has several distributed guide tubes 4. The bottom of the pipe 3 abuts against the top of the protrusion 2. The inner wall of the rotary drum 1 has several limiting posts 5. A top cover 6 is fitted over the pipe 3. The top of the pipe 3 has several cavity partitions 7 fixedly connected thereto. The top cover 6 abuts against the limiting posts 5 and the cavity partitions 7 respectively. A rotary drum cover 8 is located above the top cover 6. The drum cover 8 is provided with a low-concentration latex outlet 9 and a high-concentration latex outlet 10. The inner circumference of the drum cover 8 is provided with a partition 11, which is used to independently separate the low-concentration latex outlet 9 and the high-concentration latex outlet 10. The pipe 3 passes through the top cover 6 and the drum cover 8. The drum cover 8 and the drum 1 are fixed together by a locking assembly. The latex to be processed is introduced into the drum 1 from the pipe 3. The drum 1 rotates continuously after receiving external power, which fully centrifuges and separates the latex remaining in the drum 1. The power frequency of the external power source of the drum 1 is adjusted as shown in Tables 1 and 2.

[0021] Table 1. Variation of copper ion content under different power supply frequencies (speeds).

[0022]

[0023] Table 2. Variation of metal ion content under different power supply frequencies (speeds).

[0024]

[0025] By controlling the centrifugal factor of this device within a reasonable range during rotation, the centrifugation of this device can effectively reduce the content of metal ions in latex, such as copper ions, manganese ions, and free calcium and magnesium ions. During the centrifugation process of the rotating drum 1, the latex under the action of centrifugal force can flow out through the guide pipe 4 into the cavity formed between the pipe 3, the top cover 6, and the partition plate 7. Then, under the action of centrifugation for a certain period of time and with the continuous introduction of latex into the rotating drum 1, the latex is further separated. Through centrifugation separation over a certain period of time, the latex is gradually separated into low-concentration latex and high-concentration latex. Because the low-concentration latex is subjected to a large centrifugal force, This allows low-concentration latex to enter the cavity between the top cover 6 and the drum cover 8 through the channel formed between adjacent limiting posts 5, thus enabling the low-concentration latex to be discharged through the low-concentration latex outlet 9. Meanwhile, due to the smaller centrifugal force experienced by the high-concentration latex, it flows out through the channel formed between the pipe 3, top cover 6, drum cover 8, and separator 11, until it is discharged to the outside through the high-concentration latex outlet 10. In this way, the device can effectively separate the metal ion content and retain it within the drum 1. Both the separated high-concentration and low-concentration latex can be discharged through different channels, effectively ensuring the quality of the latex and production efficiency.

[0026] Specifically, the locking assembly includes a retaining ring 12, the top of which is provided with an annular protrusion 14, the bottom of which abuts against the drum cover 8. The retaining ring 12 is detachably connected to the outer wall of the drum 8. The detachable connection can be fixed by a threaded connection. The drum 1 and the drum cover 8 are fixed together by the retaining ring 12.

[0027] Specifically, it also includes a vertical shaft 15, which is connected to the drum 1. The vertical shaft 15 is used to receive external power input. By receiving external power input through the vertical shaft 15, the vertical shaft 15 can stably drive the drum 1 to rotate, thereby completing the separation of metal ions from latex and the separation of low-concentration latex from high-concentration latex.

[0028] Specifically, the cross-section of the pipe 3 is in the shape of an inverted trumpet. Through the structure of the pipe 3, it can better abut against the protrusion 2 of the drum 1 during the latex centrifugal separation process, thus ensuring the stability of the pipe 3 during operation.

[0029] Specifically, the guide pipes 4 are evenly distributed on the surface of the pipe 3, the limiting posts 5 are evenly distributed on the inner wall of the drum 1, and the partition plates 7 are evenly distributed on the top of the pipe 3. Through the even arrangement of the guide pipes 4, the limiting posts 5 and the partition plates 7, the centrifugal force on the device can be more balanced, the vibration amplitude can be greatly reduced, and the stability during use can be better.

[0030] Specifically, it also includes a vertical shaft cap 16, which fixes the vertical shaft 15 and the rotating drum 1 together. Through the function of the vertical shaft cap 16, the device can be made more reliable and more stable during use.

[0031] Specifically, a first sealing ring 17 is provided between the vertical shaft cap 16 and the drum 1, and a second sealing ring 18 is provided between the drum 1 and the drum cover 8. Through the action of the first sealing ring 17 and the second sealing ring, the device can be effectively sealed to prevent latex leakage during centrifugation and ensure reliability during use.

[0032] Specifically, a feed hopper 19 for introducing latex is provided above the pipe 3, and an adjusting pipe 20 connected to the bottom of the feed hopper 19 is provided thereto. The adjusting pipe 20 is connected to the pipe 3. Through the cooperation of the feed hopper 19 and the adjusting pipe 20, latex is continuously introduced into the drum 1. When the diameter of the adjusting pipe 20 is adjusted, the processing capacity of the device can be increased simultaneously. After trying the adjusting pipes with diameters of 9mm, 13mm, 14mm and 15mm, the processing capacities are 382.4L / h, 530.6L / h, 697.9L / h and 866.1L / h, respectively.

[0033] Specifically, the low-concentration latex outlet 9 is equipped with an adjusting screw 13. By adjusting the length of the adjusting screw 13 and the diameter of the adjusting screw hole, it is advisable to select an adjusting screw hole diameter of 1.0 mm and an adjusting screw length of 17 mm. This can prevent excessive dry rubber (rubber hydrocarbon) from flowing into the latex clear, reduce the yield of concentrated latex, and ensure that the dry rubber content of the produced low-concentration latex is not greater than 6%. By selecting the above dimensions, the problem of dry rubber content exceeding 6% can be effectively avoided.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drum assembly for centrifugal clarification, characterized in that, The device includes a drum for receiving external power, an annular protrusion at the bottom of the drum, a pipe for introducing latex, a plurality of distributed guide tubes on the surface of the pipe, the bottom of the pipe abutting against the top of the protrusion, a plurality of limiting posts on the inner wall of the drum, a top cover covering the pipe, a plurality of partition plates fixedly connected to the top of the pipe, the top cover abutting against the limiting posts and the partition plates, a drum cover above the top cover, a low-concentration latex outlet and a high-concentration latex outlet on the drum cover, an annular partition on the inner circumference of the drum cover to independently separate the low-concentration latex outlet and the high-concentration latex outlet, the pipe passing through the top cover and the drum cover, and the drum cover and the drum being fixed together by a locking assembly.

2. The rotary drum assembly for centrifugal clarification according to claim 1, characterized in that, The locking assembly includes a retaining ring, the top of which has an annular protrusion, the bottom of which abuts against the drum cover, and the retaining ring is detachably connected to the outer wall of the drum.

3. A drum assembly for centrifugal clarification according to claim 2, characterized in that, It also includes a vertical shaft, which is connected to the drum and is used to receive external power input.

4. A drum assembly for centrifugal clarification according to claim 2, characterized in that, The cross-section of the pipe is shaped like an inverted trumpet.

5. A drum assembly for centrifugal clarification according to claim 4, characterized in that, The guide tubes are evenly distributed on the surface of the pipe, the limiting posts are evenly distributed on the inner wall of the drum, and the partition plates are evenly distributed on the top of the pipe.

6. A drum assembly for centrifugal clarification according to claim 2, characterized in that, It also includes a vertical shaft cap, which secures the vertical shaft and the drum together.

7. A drum assembly for centrifugal clarification according to claim 6, characterized in that, A first sealing ring is provided between the vertical shaft cap and the drum, and a second sealing ring is provided between the drum and the drum cover.

8. A drum assembly for centrifugal clarification according to claim 4, characterized in that, The pipeline is provided with a feed hopper for introducing latex at the top, and an adjustment pipe is provided at the bottom of the feed hopper and connected to the pipeline.

9. A drum assembly for centrifugal clarification according to claim 4, characterized in that, An adjusting screw is provided inside the low-concentration latex outlet.

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