CN215970009U - Three-order single-screw rubber desulfurization equipment - Google Patents
Three-order single-screw rubber desulfurization equipment Download PDFInfo
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- CN215970009U CN215970009U CN202121320522.1U CN202121320522U CN215970009U CN 215970009 U CN215970009 U CN 215970009U CN 202121320522 U CN202121320522 U CN 202121320522U CN 215970009 U CN215970009 U CN 215970009U
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 46
- 239000005060 rubber Substances 0.000 title claims abstract description 46
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 26
- 230000023556 desulfurization Effects 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 4
- 235000003599 food sweetener Nutrition 0.000 claims 1
- 239000003765 sweetening agent Substances 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 15
- 230000009471 action Effects 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000003911 water pollution Methods 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 11
- 229910052717 sulfur Inorganic materials 0.000 description 11
- 239000011593 sulfur Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000010092 rubber production Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The utility model provides three-order single-screw rubber desulfurization equipment, which adopts three single-screw extruders to desulfurize recovered rubber powder, wherein the three single-screw extruders are respectively a first-order single-screw extruder, a second-order single-screw extruder and a three-order single-screw extruder, a feeding hopper is arranged on a machine barrel of the first-order single-screw extruder, a discharge hole of the first-order single-screw extruder is connected with a feed hole of the second-order single-screw extruder through a connecting pipe, and a discharge hole of the second-order single-screw extruder is connected with a feed hole of the three-order single-screw extruder through a connecting pipe. The utility model is provided with three single screw extruders to ensure that the temperature is gradually changed and stably rises, and the shearing and mixing action of the screws can ensure uniform heating and avoid the phenomenon of overhigh local temperature, so that water is not needed as a medium and water pollution is avoided.
Description
Technical Field
The utility model relates to the field of rubber desulfurization equipment, in particular to three-order single-screw rubber desulfurization equipment.
Background
Rubber plays an important role in many fields and is an important strategic resource. The recycling of the waste rubber can not only relieve the problem of not abundant rubber resources in China, but also reduce the environmental problems caused by improper treatment of the waste rubber, but the prior common dynamic desulfurization technology has the following defects: 1. the traditional dynamic desulfurization method adopts high temperature and high pressure and adds water and other auxiliary materials, wherein the water is easy to react with substances such as sulfur, carbon black and the like under the conditions of high temperature and high pressure to generate a large amount of harmful waste gas and waste water, and the environment is greatly harmed due to improper treatment; 2. because the dynamic desulfurization process requires high temperature and high pressure, the outer wall of the pressure vessel becomes thin after long-term operation. Reliability is reduced, and potential safety hazards exist; 3. the principle of the dynamic desulfurization method is to denature rubber macromolecules under the conditions of high temperature and high pressure, and the reaction needs to be kept for a certain time to realize the reduction of the rubber, so the production process is time-consuming, and a large amount of energy is consumed by keeping the high temperature and the high pressure for a long time; 4. the jar body volume that the desulfurization was used is great, and the desulfurization process can't make it be heated evenly, has a large amount of rubbers after long-term the use and remains the scale deposit, influences the rubber quality of output.
The utility model patent of patent number "CN 201720695159.9" discloses a waste rubber regeneration gross rubber production system in the utility model patent, wherein adopts rubber powder single spiral plasticizing device to carry out desulfurization treatment with the rubber powder, uses single screw extruder to add thermal shear to the rubber powder and handles, and the heating up of the unable steady realization rubber powder is operated.
Disclosure of Invention
To solve the above problems in the background art, the present invention provides a three-stage single-screw rubber desulfurization apparatus, comprising: mounting bracket, barrel, screw rod, driving motor, transmission case, the barrel horizontal installation be in on the mounting bracket, the screw rod is installed in the barrel, the one end of screw rod links to each other with driving motor through the transmission case, its characterized in that, single screw extruder has threely, is first order single screw extruder, second order single screw extruder, third order single screw extruder respectively, install feed hopper on first order single screw extruder's the barrel, first order single screw extruder's discharge gate and second order single screw extruder's feed inlet pass through the connecting pipe and link to each other, and second order single screw extruder's discharge gate and third order single screw extruder's feed inlet pass through the connecting pipe and link to each other.
Further, the method also comprises the following steps: the vacuum exhaust device is mounted on a machine barrel of the first-order single-screw extruder, the second-order vacuum exhaust device is mounted on a machine barrel of the second-order single-screw extruder, and the third-order vacuum exhaust device is mounted on a machine barrel of the third-order single-screw extruder.
Furthermore, heating devices which are arranged in a segmented mode are mounted on barrels of the first-order single-screw extruder, the second-order single-screw extruder and the third-order single-screw extruder, and the three heating devices work independently to enable the first-order single-screw extruder, the second-order single-screw extruder and the third-order single-screw extruder to keep different temperatures.
Furthermore, adjustable shearing pins are arranged inside barrels of the first-order single-screw extruder, the second-order single-screw extruder and the third-order single-screw extruder.
Furthermore, the screws of the first-order single-screw extruder, the second-order single-screw extruder and the third-order single-screw extruder are all provided with heat conduction and temperature reduction devices.
Furthermore, cavities are formed inside the screws of the first-order single-screw extruder, the second-order single-screw extruder and the third-order single-screw extruder, the heat conduction and cooling device is specifically three constant-temperature water tanks, and the three constant-temperature water tanks are respectively communicated with the cavities in the screws of the first-order single-screw extruder, the second-order single-screw extruder and the third-order single-screw extruder.
Compared with the prior art, the utility model provides three-order single-screw rubber desulfurization equipment, which has the following beneficial effects:
1. the utility model is provided with three single screw extruders to ensure that the temperature is gradually changed and stably rises, and the shearing and mixing action of the screws can ensure uniform heating and avoid the phenomenon of overhigh local temperature. Therefore, water is not needed as a medium, and water pollution is avoided; the first-order single-screw extruder is firstly subjected to preliminary preheating, so that local carbonization caused by rapid temperature rise is avoided; shearing and heating the second-order single-screw extruder to destroy chemical bonds of sulfur molecules; the three-order single-screw extruder is cooled to avoid the damage of long-time high temperature to C-C bonds, and the good mechanical property of the regenerated rubber is guaranteed.
2. The key of rubber desulfurization is that the sulfur chemical bond of rubber molecules is destroyed, so that sulfur element can be separated from the recovered rubber through the mechanical shearing action, the shearing force is in positive correlation with the desulfurization effect on the whole, but the C-C bond in the rubber can be destroyed when the shearing force is overlarge, so that the mechanical property of the rubber is sharply reduced.
3. The vacuum exhaust device is arranged on each single-screw extruder, so that the sulfur-containing waste gas is prevented from entering the atmosphere from the extrusion port as far as possible to cause personal injury.
4. Because the heater is removed in the production process to generate heat, the shearing of the screw rod can generate high temperature, and in order to avoid generating local high temperature on the screw rod, the heat conduction cooling device is arranged on the screw rod to ensure that the temperature in the machine barrel is uniform and stable.
Drawings
FIG. 1 is a schematic structural diagram of a three-stage single-screw rubber desulfurization apparatus.
Wherein: 01-a mounting frame; 02-machine barrel; 03-screw rod; 04-a transmission case; 05-driving a motor; 1-a first-order single screw extruder; 101-a feeding hopper; 102-first order vacuum exhaust; 2-second order single screw extruder; 202-second order vacuum exhaust; 3-a three-stage single screw extruder; 302-third order vacuum exhaust.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, the utility model provides a three-order single-screw rubber desulfurization device, which adopts a single-screw extruder to perform desulfurization treatment on recovered rubber powder, wherein the single-screw extruder comprises: the extruder comprises a mounting rack 01, a machine barrel 02, screws 03, a driving motor 05 and a transmission case 04, wherein the machine barrel 02 is horizontally mounted on the mounting rack 01, the screws 03 are mounted in the machine barrel 02, one end of each screw 03 is connected with the driving motor 05 through the transmission case 04, the number of the single-screw extruders is three, namely a first-order single-screw extruder 1, a second-order single-screw extruder 2 and a third-order single-screw extruder 3, a feeding hopper 101 is mounted on the machine barrel of the first-order single-screw extruder 1, a discharging port of the first-order single-screw extruder 1 is connected with a feeding port of the second-order single-screw extruder 2 through a connecting pipe, a discharging port of the second-order single-screw extruder 2 is connected with a feeding port of the third-order single-screw extruder 3 through a connecting pipe, heating devices which are arranged in a segmented mode are mounted on the machine barrels of the first-order single-screw extruder 1, the second-order single-screw extruder 2 and the third-order single-screw extruder 3, and the three heating devices work independently to enable the first-order single-screw extruder 1, the second-order single-screw extruder 2, the third-extruder 3 to work independently, The second-order single-screw extruder 2 and the third-order single-screw extruder 3 are kept at different temperatures. The three single-screw extruders are arranged to ensure that the temperature is gradually changed and stably rises, and the shearing and mixing action of the screws can ensure uniform heating and avoid the phenomenon of overhigh local temperature, so that water is not needed as a medium and water pollution is avoided; when the rubber powder pre-preheating device works, the rubber powder after preliminary treatment is placed into the feeding hopper 101, preliminary preheating is carried out through the first-order single-screw extruder 1, and local carbonization caused by rapid temperature rise is avoided; then shearing and heating are carried out through a second-order single-screw extruder 2, and chemical bonds of sulfur molecules are destroyed; and finally, the three-order single-screw extruder 3 is used for cooling, so that the damage of long-time high temperature to C-C bonds is avoided, and the good mechanical property of the regenerated rubber is guaranteed.
Because a large amount of sulfur-containing volatile gases are generated in the desulfurization process, the harmful gases are easy to volatilize into the air from the discharge ports of the first-order vacuum exhaust device 102, the second-order vacuum exhaust device 202 and the third-order vacuum exhaust device 302, which causes harm to the environment and workers, and the utility model also provides the following steps for solving the problems: the first-order vacuum exhaust device 102, the second-order vacuum exhaust device 202 and the third-order vacuum exhaust device 302, wherein the first-order vacuum exhaust device 102 is installed on a cylinder of a first-order single-screw extruder 1, the second-order vacuum exhaust device 202 is installed on a cylinder of a second-order single-screw extruder 2, and the third-order vacuum exhaust device 302 is installed on a cylinder of a third-order single-screw extruder 3. Thereby avoiding the sulfur-containing waste gas from the extrusion port to enter the atmosphere as much as possible and causing personal injury.
The key point of rubber desulfurization is that the sulfur chemical bond of rubber molecules is destroyed, so that sulfur element can be separated from the recovered rubber through the mechanical shearing action, the shearing force is in positive correlation with the desulfurization effect on the whole, but the C-C bond in the rubber can be destroyed when the shearing force is overlarge, so that the mechanical property of the rubber is sharply reduced, and in order to achieve the best shearing effect, adjustable shearing pins are arranged in the machine barrels of a first-order single-screw extruder 1, a second-order single-screw extruder 2 and a third-order single-screw extruder 3. By adjusting the shear pins to maintain the shear force at the most appropriate level, the breaking of C-C bonds is reduced while the breaking of sulfur chemical bonds is as much as possible.
In order to avoid local high temperature on the screw, heat-conducting cooling devices are respectively arranged on the screws of the first-order single-screw extruder 1, the second-order single-screw extruder 2 and the third-order single-screw extruder 3, cavities are respectively arranged inside the screws of the first-order single-screw extruder 1, the second-order single-screw extruder 2 and the third-order single-screw extruder 3, and the heat-conducting cooling devices are specifically three constant-temperature water tanks which are respectively communicated with the cavities in the screws of the first-order single-screw extruder 1, the second-order single-screw extruder 2 and the third-order single-screw extruder 3. Effectively avoiding the problem that the temperature rises rapidly to carbonize the rubber when the screw is sheared.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a three-order single screw rubber sweetener, adopts single screw extruder to carry out desulfurization treatment to retrieving rubber powder, single screw extruder includes: a mounting rack (01), a machine barrel (02), a screw rod (03), a driving motor (05) and a transmission case (04), the cylinder (02) is horizontally arranged on the mounting rack (01), the screw rod (03) is arranged in the cylinder (02), one end of the screw rod (03) is connected with a driving motor (05) through a transmission case (04), it is characterized in that the number of the single screw extruders is three, namely a first-order single screw extruder (1), a second-order single screw extruder (2) and a third-order single screw extruder (3), the feeding hopper (101) is installed on a machine barrel of the first-order single-screw extruder (1), a discharge hole of the first-order single-screw extruder (1) is connected with a feed hole of the second-order single-screw extruder (2) through a connecting pipe, and a discharge hole of the second-order single-screw extruder (2) is connected with a feed hole of the third-order single-screw extruder (3) through a connecting pipe.
2. The three-stage single-screw rubber devulcanizing apparatus of claim 1, further comprising: the device comprises a first-order vacuum exhaust device (102), a second-order vacuum exhaust device (202) and a third-order vacuum exhaust device (302), wherein the first-order vacuum exhaust device (102) is installed on a cylinder of the first-order single-screw extruder (1), the second-order vacuum exhaust device (202) is installed on a cylinder of the second-order single-screw extruder (2), and the third-order vacuum exhaust device (302) is installed on a cylinder of the third-order single-screw extruder (3).
3. The three-stage single-screw rubber desulfurization equipment according to claim 1, wherein heating devices are installed on the barrels of the first-stage single-screw extruder (1), the second-stage single-screw extruder (2) and the three-stage single-screw extruder (3) in a segmented manner, and the three heating devices work independently to keep different temperatures in the first-stage single-screw extruder (1), the second-stage single-screw extruder (2) and the three-stage single-screw extruder (3).
4. The three-stage single-screw rubber devulcanizing apparatus according to claim 1, wherein the barrels of the first-stage single-screw extruder (1), the second-stage single-screw extruder (2) and the three-stage single-screw extruder (3) are internally provided with adjustable shear pins.
5. The three-stage single-screw rubber desulfurization equipment according to claim 1, wherein the screws of the first-stage single-screw extruder (1), the second-stage single-screw extruder (2) and the three-stage single-screw extruder (3) are all provided with heat conduction and temperature reduction devices.
6. The three-order single-screw rubber desulfurization device according to claim 5, wherein cavities are arranged inside the screws of the first-order single-screw extruder (1), the second-order single-screw extruder (2) and the three-order single-screw extruder (3), the heat conduction and temperature reduction device is specifically three constant temperature water tanks, and the three constant temperature water tanks are respectively communicated with the cavities in the screws of the first-order single-screw extruder (1), the second-order single-screw extruder (2) and the three-order single-screw extruder (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121320522.1U CN215970009U (en) | 2021-06-15 | 2021-06-15 | Three-order single-screw rubber desulfurization equipment |
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| CN202121320522.1U CN215970009U (en) | 2021-06-15 | 2021-06-15 | Three-order single-screw rubber desulfurization equipment |
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| CN215970009U true CN215970009U (en) | 2022-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116572498A (en) * | 2023-07-13 | 2023-08-11 | 张家港市云臻科技有限公司 | Extrusion screw device for blow molding machine |
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2021
- 2021-06-15 CN CN202121320522.1U patent/CN215970009U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116572498A (en) * | 2023-07-13 | 2023-08-11 | 张家港市云臻科技有限公司 | Extrusion screw device for blow molding machine |
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Effective date of registration: 20231123 Address after: 210000 No. 10 Julong Road, Jiangbei new district, Nanjing, Jiangsu Patentee after: JIANGSU CENMEN EQUIPMENT Corp.,Ltd. Address before: No.22, Liuzhou North Road, Xiaoliu Industrial Park, high tech Zone, Nanjing, Jiangsu 210032 Patentee before: NANJING CHENGMENG EXTRUSION EQUIPMENT CO.,LTD. |