CN218700385U - Wet mixing continuous dewatering device - Google Patents
Wet mixing continuous dewatering device Download PDFInfo
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- CN218700385U CN218700385U CN202221575356.4U CN202221575356U CN218700385U CN 218700385 U CN218700385 U CN 218700385U CN 202221575356 U CN202221575356 U CN 202221575356U CN 218700385 U CN218700385 U CN 218700385U
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- filter cloth
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- dewatering device
- wet mixing
- continuous dewatering
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Abstract
The utility model relates to a mixed preparation carbon black master batch technical field of wet process, more specifically say, relate to a mixed serialization dewatering device of wet process specifically includes: the filter cloth is used for filtering water in the masterbatch; the rolling wheel is used for supporting and driving the filter cloth to convey; the paired-roller squeezer comprises two squeezing rollers; the two squeezing rollers are respectively positioned at the upper side and the lower side of the filter cloth, and are close to each other to squeeze the filter cloth. Through the process, more than 90% of water can be removed, the working pressure of subsequent drying equipment is greatly reduced, the drying energy consumption is reduced, and the drying efficiency is improved.
Description
Technical Field
The utility model relates to a mixed preparation carbon black masterbatch technical field of wet process more specifically, relates to a mixed serialization dewatering device of wet process.
Background
Carbon black is used in the rubber industry as a filler having the most excellent reinforcing property in rubber. Carbon black as a nano-grade material can be well dispersed in rubber, which is an important technical problem, and the current common cognitive theory is that the good dispersion of carbon black in rubber is one of the most important indexes for obtaining good quality and product performance. The most common way to achieve dispersion and mixing between rubber and carbon black is by physical shear kneading in an internal mixer. In this way, after the carbon black reaches a certain dispersion degree, the dispersibility tends to be balanced, and the nano-scale dispersion is difficult to achieve. And the problems of rubber material temperature rise, serious molecular chain damage and the like can be caused along with the increase of the mixing time, so that the performance of the product is reduced. Therefore, an emerging wet mixing technology is developed, and the mixing between the carbon black and the latex is realized in the solution, so as to achieve better dispersion between the carbon black and the rubber. At present, the uniform mixing of carbon black and latex is realized mostly by adopting a stirring mode, and the master batch formed by combining the carbon black and the rubber is flocculated and separated from the solution by adding a demulsifier mode. Or the collision mixing among the nanometer-level particles is realized in the form of jet collision. Although the wet mixing technology can realize better dispersibility and achieve better physical and mechanical properties of the product, the wet mixing is carried out in a solvent environment, so that the solvent content of the material produced by the final reaction is up to more than 80%. At present, most of dehydration drying methods adopt an oven for natural drying or a rubber dehydration drying machine for drying. Has the problems of long drying time, solvent resource waste, low dehydration efficiency and the like.
SUMMERY OF THE UTILITY MODEL
To the problem that exists in the technique of present stage, the utility model provides a mixing serialization dehydration technology of wet process. Through the utility model discloses a device can take off the water more than 90%, alleviates follow-up drying equipment operating pressure greatly, reduces the drying energy consumption, improves drying efficiency.
In order to achieve the above purpose, the utility model provides a technical scheme does:
a continuous dewatering device for wet mixing is characterized by comprising:
the filter cloth is used for filtering water in the masterbatch;
the rolling wheel is used for supporting and driving the filter cloth to convey;
the paired-roller squeezer comprises two squeezing rollers; the two squeezing rollers are respectively positioned at the upper side and the lower side of the filter cloth, are close to each other and squeeze the filter cloth;
and the drying equipment is arranged at the tail end of the filter cloth and is used for further processing the masterbatch filtered by the filter cloth.
As a further optimized technical scheme, the length of the squeezing roller is more than or equal to the width of the filter cloth.
As a further optimized technical scheme, the distance between the two squeezing rollers is smaller than or equal to the thickness of the filter cloth.
As a further optimized technical scheme, the rotating directions of the two squeezing rollers are respectively the same as the advancing direction of the filter cloth.
As a further optimized technical scheme, the running speed of the filter cloth is the same as the linear speed of the two squeezing rollers.
As a further optimized technical scheme, the running speed of the filter cloth is 10m/min; the linear speed of rotation of the two squeeze rollers is 10m/min.
As a further optimized technical scheme, the filter cloth is 80-mesh terylene filter cloth.
As a further optimized technical scheme, the filter cloth is of a rotary structure.
As a further optimized technical scheme, a tensioning wheel for tensioning the filter cloth is further arranged; the tensioning wheel is arranged below the rolling wheel.
As a further optimized technical scheme, a storage tank for storing masterbatch is further arranged above the filter cloth.
As a further optimized technical scheme, the left side and the right side of the filter cloth are provided with baffle plates.
As a further optimized technical scheme, the vibration device is also provided with an oscillator for knocking the filter cloth and is arranged below the filter cloth.
As a further optimized technical scheme, a second scraper plate for paving the masterbatch on the filter cloth is further arranged, and the second scraper plate is arranged at the downstream of the oscillator and at the upstream of the roller press.
As a further optimized technical scheme, the distance between the bottom end of the second scraper and the filter cloth is 1-3cm.
As a further optimized technical scheme, a first scraper blade for stripping the masterbatch attached to the filter cloth is further arranged at the downstream of the double-roller squeezer.
As a further optimized technical scheme, a cleaner is arranged below the filter cloth and used for washing residual masterbatch on the filter cloth.
As a further optimized technical scheme, the cleaner is a high-pressure water gun which sprays from bottom to top.
As a further preferred solution, the washer is disposed downstream of the first scraper.
As a further optimized technical scheme, a recovery water tank is arranged below the filter cloth, the width of the recovery water tank is wider than that of the filter cloth, and the length of the recovery water tank is longer than that of the filter cloth.
As a further optimized solution, the recycling water tank has a conical bottom to guide the recycling liquid into the recycling water tank.
As a further optimized technical scheme, a filtering screen is arranged at the inlet of the recovery water tank.
As a further optimized technical scheme, the drying equipment comprises but is not limited to an oven and a screw extruder.
As a further optimized technical scheme, the device is further provided with a motor, and the motor is connected with one rolling wheel and used for braking the rolling wheel to rotate.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses mixing serialization dewatering device of wet process carries out the serialization dehydration with the masterbatch before the wet process is mixed, send into the drying equipment drying after filter cloth filters, squeeze roll filter-pressing in proper order. The water content of the masterbatch is reduced to 15-20% from 85-95%, and the water content is reduced to below 1% through further drying. Greatly reducing the working pressure of the subsequent dehydration drying equipment. And automatic continuous dehydration operation can be realized. And water recovery equipment is also added, so that the filtered water and the water extruded by the double-roller extruder are recovered, more than 90% of water resource can be recovered, and the environment protection and water recycling are facilitated. Has the advantages that: the working pressure of subsequent dehydration drying equipment is reduced, the early dehydration procedure is strengthened, the continuous operation can be ensured, and the water resource can be recycled.
Drawings
FIG. 1 is a drawing of an embodiment of the present invention, which is a continuous dewatering device for wet mixing;
FIG. 2 is the masterbatch test data after drying;
FIG. 3 is a table of ingredients for preparing vulcanizates;
FIG. 4 shows the performance test of vulcanized rubber prepared from the masterbatch.
In the figure, 1, filter cloth; 2. a rolling wheel; 3. a squeeze roll; 4. a material storage tank; 5. a baffle plate; 6. an oscillator; 7. a second squeegee; 8. a tension wheel; 9. a first squeegee; 10. a drying device; 11. a washer; 12. a recovery water tank; 13. and (5) recovering the water tank.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1, the continuous dewatering device for wet mixing according to the preferred embodiment of the present invention specifically includes:
the filter cloth 1 is used for filtering water in the masterbatch;
the rolling wheel 2 is used for supporting and driving the filter cloth 1 to convey;
a twin roll extruder comprising two extrusion rolls 3; the two squeezing rollers 3 are respectively positioned at the upper side and the lower side of the filter cloth 1, and the two squeezing rollers 3 are close to each other to squeeze the filter cloth 1.
In some embodiments of the present application, the flocculated masterbatch is stored in a storage tank 4, specifically, the storage tank 4 is disposed above the filter cloth 1 and upstream of the filter cloth 1 in the conveying direction, and the bottom of the storage tank is tapered; the masterbatch in the storage tank 4 falls on the filter cloth 1 through gravity; optionally, the outlet of the storage tank 4 is provided with a valve for controlling the discharging speed of the masterbatch.
In some embodiments of the present application, the left and right sides of the filter cloth 1 are provided with baffles 5 for preventing the masterbatch on the filter cloth 1 from slipping out or splashing out of the filter cloth 1.
In some embodiments of the present application, an oscillator 6 is disposed below the filter cloth 1 at a position corresponding to the storage tank 4, and the falling masterbatch is dispersed on the filter cloth 1 by the oscillator 6, and the filtration of water is accelerated.
In some embodiments of the present application, a second scraper 7 is provided upstream of the squeeze roll 3 for spreading the masterbatch on the filter cloth 1; which is arranged downstream of the oscillator 6, upstream of the roll squeezer; the distance between the bottom end part of the second scraper 7 and the filter cloth 1 is 1-3cm, preferably 2cm, and after passing through the second scraper 7, the thickness of the masterbatch on the filter cloth 1 is equal to or less than 2cm.
In some embodiments of the present application, the distance between two of the squeezing rollers 3 is less than or equal to the thickness of the filter cloth 1; the length of the squeezing roller 3 is more than or equal to the width of the filter cloth 1. The rotation directions of the two squeezing rollers 3 are respectively the same as the advancing direction of the filter cloth 1, and the masterbatch passing through the squeezing rollers 3 is squeezed. In this embodiment, the filter cloth 1 is operated at the same linear speed as the two squeezing rollers 3. Preferably, the running speed of the filter cloth 1 is 10m/min; the linear speed of rotation of the two squeeze rollers 3 is 10m/min.
In some embodiments of the present application, the filter cloth 1 is an 80-mesh dacron filter cloth 1.
In some embodiments of the present application, a tensioning wheel 8 for tensioning the filter cloth 1 is further provided; the tension pulley 8 is disposed below the rolling pulley 2. In this embodiment, at least two sets of tensioning wheels 8 are provided, the two sets of tensioning wheels 8 are respectively provided below the two rolling wheels 2, each set is at least two, the filter cloth 1 bypasses the two tensioning wheels 8 to form a zigzag structure, and the tensioning degree of the filter cloth 1 is adjusted by adjusting the positions of the tensioning wheels 8.
In some embodiments of the present application, a first scraper 9 for stripping off the masterbatch adhering to the filter cloth 1 is further provided, which is provided downstream of the counter-roll squeezer; preferably, the first scraper 9 is arranged at the end of the filter cloth 1 downstream of the upper end surface. The scraper blade is the slope setting, and its upper end butt filter cloth 1 for with masterbatch and filter cloth 1 separation, the lower extreme is towards drying equipment 10, is used for guiding the masterbatch to get into drying equipment 10.
In some embodiments of the present application, the filter cloth 1 is a rotary structure, and a cleaner 11 is disposed below a lower portion of the filter cloth 1, that is, the cleaner 11 faces an end surface of the filter cloth 1 originally loaded with the masterbatch, and is used for washing the residual masterbatch on the filter cloth 1. Preferably, the cleaner 11 is a high pressure water gun, which sprays from bottom to top. In the present embodiment, the washer 11 is disposed downstream of the first squeegee 9.
In some embodiments of the present application, a recycling water tank 12 is disposed below the filter cloth 1, and the recycling water tank 12 is wider than the filter cloth 1 and longer than the filter cloth 1. The recovery water tank 12 has a tapered bottom to guide the recovery liquid into the recovery water tank 13. Preferably, a filtering screen is arranged at the inlet of the recovery water tank 13, and the filtered water enters the recovery water tank 13 for storage and is used for preparing carbon black aqueous dispersion and the like after being processed, so that the water is recycled; specifically, the water collected by the recovery water tank is collected and filtered, then enters the recovery water tank, and is added with a treating agent such as an acid solution to adjust substances such as residual ammonia water in the water. The treated water is reused for preparing the carbon black water dispersion liquid, so that water circulation is realized. Can recover 95 to 98 percent of water resources.
In some embodiments of the present application, the drying apparatus 10 includes, but is not limited to, an oven, a screw extruder.
As a further optimized technical scheme, the device is further provided with a motor, and the motor is connected with one rolling wheel 2 and used for braking the rolling wheel 2 to rotate. Alternatively, the rolling wheel 2 drives the squeeze roller 3 to rotate.
On the basis of the embodiment, the continuous dewatering process for wet mixing comprises the following steps:
s1, dispersing carbon black in an aqueous medium to prepare a carbon black aqueous dispersion liquid;
s2, mixing the carbon black aqueous dispersion liquid and latex, and flocculating to obtain masterbatch;
s3, dehydrating the masterbatch prepared in the step S2 by adopting the dehydrating device;
s4, conveying the dehydrated masterbatch into drying equipment for drying;
the liquid is recovered after dehydration and is used for preparing aqueous medium.
In some embodiments of the present application, the post-dehydrated masterbatch moisture content in step S3 is 15% -20%.
Example 1: after the filter pressing device is adopted for filter pressing, the filter pressing device is sent to the extrusion dehydration drying all-in-one machine for drying.
Example 2: after filter pressing is carried out by adopting the filter pressing device, the filter pressing device is sent to an oven for drying at 60 ℃.
Comparative example 1: directly enter the extrusion dehydration drying all-in-one machine from the masterbatch storage tank 4.
Comparative example 2: directly enters into a baking oven from a masterbatch storage tank 4 to be dried at 60 ℃.
Both examples and comparative examples 10kg of dried masterbatch was prepared for comparative data as shown in FIGS. 2-4.
As can be seen from example 1 and comparative example 1, the dehydration and drying in comparative example 1 by screw extrusion alone takes a long time and consumes a high amount of energy. The reason is that the water content of the undehydrated masterbatch is large, the water discharge amount of the screw extruder is limited, and the screw extruder has low feeding speed and long time consumption. Since the screw has a high-temperature drying function, the energy consumption is increased due to an excessive moisture content and a long-term operation.
From the performance, the performance of the masterbatch adopting the early dewatering device and not adopting the early dewatering device has no obvious influence, which indicates that the early dewatering device can not generate adverse effect on the masterbatch.
As can be seen from example 2 and comparative example 2, the drying time of oven drying after dehydration by the early dehydration device is greatly reduced, which indicates that the early dehydration device has better dehydration capability. The efficiency of the drying method by using the oven is obviously improved.
From the performance, the natural drying masterbatch performance that does not adopt dewatering device in earlier stage has obvious decline, and long-time high temperature drying has the effect of destroying the schizolysis to masterbatch itself, and when moisture volatilizees, the schizolysis has also taken place for rubber to the performance that leads to the masterbatch has appeared and has declined.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. A continuous dewatering device for wet mixing is characterized by comprising:
the filter cloth is used for filtering water in the masterbatch;
the rolling wheel is used for supporting and driving the filter cloth to convey;
the paired-roller squeezer comprises two squeezing rollers; the two squeezing rollers are respectively positioned at the upper side and the lower side of the filter cloth, are close to each other and squeeze the filter cloth;
and the drying equipment is arranged at the tail end of the filter cloth and is used for further processing the masterbatch filtered by the filter cloth.
2. The continuous dewatering device for wet mixing according to claim 1, wherein the distance between the two squeezing rollers is less than or equal to the thickness of the filter cloth.
3. The continuous dewatering device for wet mixing according to claim 1, wherein the two squeezing rolls rotate in the same direction as the filter cloth.
4. A continuous dewatering apparatus as claimed in claim 1, wherein the filter cloth is run at the same speed as the linear speed of rotation of the two squeeze rollers.
5. The continuous dewatering device for wet mixing according to claim 1, further comprising a first scraper for removing a masterbatch adhering to the filter cloth, the first scraper being disposed downstream of the counter-roll press.
6. The continuous dewatering device for wet mixing according to claim 1, further comprising an oscillator for beating the filter cloth, the oscillator being disposed upstream of the twin-roll extruder.
7. The continuous dewatering device for wet mixing according to claim 1, wherein baffles are provided on both sides of the filter cloth.
8. A continuous dewatering device for wet mixing according to claim 6, further comprising a second scraper for spreading a masterbatch on the filter cloth, disposed downstream of the oscillator and upstream of the roll squeezer.
9. The continuous dewatering device for wet mixing according to claim 1, wherein a washer is arranged below the filter cloth for washing residual masterbatch on the filter cloth.
10. The continuous dewatering device for wet mixing according to claim 1, wherein a recovery water tank is arranged below the filter cloth, and the recovery water tank is wider than the filter cloth and longer than the filter cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221575356.4U CN218700385U (en) | 2022-06-22 | 2022-06-22 | Wet mixing continuous dewatering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221575356.4U CN218700385U (en) | 2022-06-22 | 2022-06-22 | Wet mixing continuous dewatering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218700385U true CN218700385U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221575356.4U Active CN218700385U (en) | 2022-06-22 | 2022-06-22 | Wet mixing continuous dewatering device |
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| CN (1) | CN218700385U (en) |
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- 2022-06-22 CN CN202221575356.4U patent/CN218700385U/en active Active
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