CN115990453B - Preparation device and process of high-barrier MXD6 packaging material - Google Patents
Preparation device and process of high-barrier MXD6 packaging material Download PDFInfo
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- CN115990453B CN115990453B CN202310282825.6A CN202310282825A CN115990453B CN 115990453 B CN115990453 B CN 115990453B CN 202310282825 A CN202310282825 A CN 202310282825A CN 115990453 B CN115990453 B CN 115990453B
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Abstract
The invention relates to the technical field of chemical synthesis, in particular to a preparation device and a preparation process of a high-barrier MXD6 packaging material, wherein the preparation device comprises a rotary drum body, a mounting bracket and a rotary driving mechanism, the rotary drum body is a cylindrical barrel which is horizontally inserted on the mounting bracket, and a reaction cavity and a heating cavity are arranged in the rotary drum body; the reaction chamber is the slope setting at the inside cylindrical cavity of rotary drum body, the heating chamber encircles in reaction chamber week side, the both ends of heating chamber are provided with respectively leads oil pipe, lead oil pipe and pass the axle sleeve and extend to rotary drum body outside and be connected with conduction oil circulating device, the exhaust tube is connected to the one end of heating chamber, the exhaust tube extends to rotary drum body outside and is connected with vacuum generator, this technical scheme is through the inside direct conduction oil that fills of heating chamber that reaction chamber week side encircleed, make the direct laminating reaction chamber outer wall of conduction oil carry out even heating to the prepolymer of reaction chamber inside, guarantee that the conduction oil of heating intracavity is in suitable temperature and reduce the inside dead angle of reaction chamber all the time.
Description
Technical Field
The invention relates to the technical field of chemical synthesis, in particular to a preparation device of a high-barrier MXD6 packaging material, and also relates to a preparation process of the high-barrier MXD6 packaging material.
Background
Chinese patent application CN112795008A discloses a synthesis process of nylon MXD6, comprising the following steps: (1) Adding m-xylylenediamine, adipic acid and a solvent into a salifying kettle for salifying reaction, adjusting the pH value to be alkalescent, and obtaining m-xylylenediamine adipoyl salt solution after complete reaction; (2) Concentrating the m-xylylenediamine adipoyl salt solution obtained in the step (1) in a concentration kettle to obtain m-xylylenediamine adipoyl salt concentrated solution; (3) Mixing the m-xylylenediamine adipoyl salt concentrated solution obtained in the step (2) with an auxiliary agent in a polymerization kettle, carrying out a prepolymerization reaction, and carrying out post-treatment to obtain a prepolymer; (4) And (3) carrying out solid-phase tackifying reaction on the prepolymer obtained in the step (3) to obtain the nylon MXD6.
The nylon MXD6 obtained by the process needs to carry out solid-phase tackifying reaction on the prepolymer, and the key point in the solid-phase tackifying process is that the polymer particles in the solid-phase tackifying reaction need to be heated by a rotary drum. The traditional rotary drum has low heat transfer efficiency to the polymer particles in the rotary drum, so that the product manufacturing energy consumption is high, the production efficiency is low, and the product quality stability is poor.
Chinese patent CN210875355U discloses a solid-phase tackifying drum, comprising a drum body having a front side and a rear side, the drum body comprising a drum inner shell and a drum outer shell that are coaxial; the rotary drum body is provided with a feed inlet and a discharge outlet, and two side surfaces of the rotary drum body are respectively provided with coaxial rotating brackets; a jacket is formed between the inner drum shell and the outer drum shell, a spiral diversion trench is arranged in the jacket, a spiral coil is arranged in the inner cavity of the inner drum shell, and an outlet of the coil is communicated with the diversion trench to form a double heating path.
The equipment uses the oil guide pipe to heat the rotary drum like the existing equipment, the oil guide pipe occupies a certain volume to influence the service area in the rotary drum, and a certain dead angle is formed in the rotary drum, so that the efficiency of solid-phase tackifying reaction is influenced, when the rotary drum rotates at a high speed, a certain abrasion is formed on the bending part of the oil guide pipe, and the service life of the oil guide pipe is reduced.
Disclosure of Invention
Aiming at the problems, the preparation device and the process of the high-barrier MXD packaging material are provided, the preparation device carries out solid-phase tackifying processing on the prepolymer through a reaction cavity formed in the rotary drum body, the inside of a heating cavity surrounded by the periphery of the reaction cavity is directly filled with heat conduction oil, and the heat conduction oil is directly attached to the outer wall of the reaction cavity to uniformly heat the prepolymer in the reaction cavity. The conduction oil in the heating cavity is always at a proper temperature, and dead angles in the reaction cavity are reduced.
In order to solve the problems in the prior art, the invention adopts the following technical scheme:
the preparation device of the high-barrier MXD packaging material comprises a rotary drum body and a mounting bracket for inserting the rotary drum body, wherein a rotary driving mechanism for driving the rotary drum body to rotate is mounted on the mounting bracket; the reaction cavity is a cylindrical cavity obliquely arranged in the rotary drum body, the highest end and the lowest end of the reaction cavity are provided with a feed pipe and a discharge pipe which are communicated with the outside of the rotary drum body, and prepolymer enters the reaction cavity through the feed pipe; the heating cavity surrounds the periphery of the reaction cavity, oil guide pipes are respectively arranged at two ends of the heating cavity, extend to the outside of the rotary drum body through the shaft sleeve and are connected with the heat conduction oil circulating device, and the heat conduction oil is positioned in the heating cavity to heat the periphery of the reaction cavity; one end of the heating cavity is connected with an exhaust pipe, and the exhaust pipe extends to the outside of the rotary drum body and is connected with a vacuum generator.
Preferably, the heating cavity is formed by dividing the partition plates attached to the two ends of the reaction cavity by matching with the inner wall of the rotary drum body; the oil guide pipe comprises a first oil inlet pipe and a first oil outlet pipe which are inserted on the partition plate, and the other ends of the first oil inlet pipe and the first oil outlet pipe are inserted in a connecting cylinder coaxially arranged in the shaft sleeve.
Preferably, one end of the connecting cylinder, which is far away from the first oil inlet pipe and the first oil outlet pipe, is coaxially provided with a rotating bearing; the oil guide pipe further comprises a second oil inlet pipe and a second oil outlet pipe, one ends of the second oil inlet pipe and the second oil outlet pipe facing the inside of the rotary drum body are coaxially connected with the rotating bearing, and the other ends of the second oil inlet pipe and the second oil outlet pipe are respectively connected with the output end and the input end of the heat conduction oil circulation device.
Preferably, at least one expansion air bag is arranged in the heating cavity, and the expansion air bag is communicated with a gas generator arranged outside the rotary drum body through an air tap.
Preferably, a filter screen is arranged at the joint of the exhaust pipe and the reaction cavity.
Preferably, one end of the exhaust pipe far away from the filter screen is provided with a connector, a movable valve core is coaxially arranged at the connector, and the movable valve core moves along the axis of the exhaust pipe; one side of the mounting bracket facing the exhaust pipe is provided with a mounting sleeve, the axis of the mounting sleeve and the axis of the exhaust pipe are positioned on the same straight line, an air pipe connector is coaxially arranged in the mounting sleeve, and one end of the air pipe connector is connected with a vacuum generator; the air pipe connector is connected with the connector to push the movable valve core to move, and the air pipe connector is separated from the connector in the reaction cavity communicated with the vacuum generator, so that the movable valve core seals the exhaust pipe.
Preferably, a first air inlet channel extending along the axis of the exhaust pipe is arranged in the connector, and a second air inlet channel extending along the radial direction of the first air inlet channel is arranged at one end of the first air inlet channel positioned in the exhaust pipe; the movable valve core is provided with a third air inlet channel, one end of the third air inlet channel is arranged in parallel with the axis of the second air inlet channel, and the other end of the third air inlet channel is communicated with the interior of the exhaust pipe; when the movable valve core moves to the position that the third air inlet channel is in the same straight line with the second air inlet channel on the connecting head, the air pipe connector is communicated with the air exhaust pipe.
Preferably, a limiting ring surrounding the interior of the exhaust pipe is arranged in the exhaust pipe, a plurality of return springs are arranged on one side, facing the movable valve core, of the limiting ring, and the return springs are elastically connected with the limiting ring and the movable valve core; at least one jack is arranged on the connecting head, a push rod which is in the same straight line with the axis of the jack is arranged on one side of the air pipe connecting head, which faces the air extraction pipe, and the push rod is inserted into the jack to push the movable valve core to move.
Preferably, the feed pipe and the discharge pipe of the reaction cavity are sealed by a detachable plugging cap; the sealing cap is provided with a sealing plug, the sealing plug is sleeved with a sealing ring, and the sealing ring is attached to the inner wall of the feeding pipe and the inner wall of the discharging pipe to seal the feeding pipe and the discharging pipe.
A preparation process of a high-barrier MXD packaging material is applied to a preparation device of the high-barrier MXD packaging material, and comprises the following steps of;
step one: filling prepolymer into a reaction cavity of the drum body through a feed pipe;
step two: injecting heat conduction oil into the heating cavity through the oil guide pipe to heat the reaction cavity;
step three: the rotary driving mechanism drives the rotary drum body to intermittently rotate, and the vacuum generator is positioned in the rotary drum body to intermittently vacuumize the inside of the reaction cavity through the exhaust pipe;
step four: and (5) finishing solid-phase tackifying processing, and taking out the reactant through a discharge pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the prepolymer is subjected to solid-phase tackifying processing through the reaction cavity formed in the rotary drum body, the reaction cavity is a cylindrical cavity obliquely arranged in the rotary drum body, the prepolymer is positioned in the reaction cavity and oscillated, and full contact is kept, and the rotary drum body is a cylindrical barrel horizontally inserted on the mounting bracket, so that the pressure brought by shaking to the transmission positions of the rotary driving mechanism and the rotary drum body is reduced when the rotary driving mechanism drives the rotary drum body to rotate, no dead angle exists in the reaction cavity, and the prepolymer can be completely discharged while full contact is ensured.
2. According to the invention, the partition plates attached to the two ends of the reaction cavity are matched with the inner wall of the rotary drum body to separate and form the heating cavity surrounding the reaction cavity, the inside of the heating cavity is directly filled with heat conduction oil, and the heat conduction oil is directly attached to the outer wall of the reaction cavity to uniformly heat prepolymer in the reaction cavity. The conduction oil in the heating cavity is always at a proper temperature, and the reaction environment in the reaction cavity is ensured to be stable.
3. According to the invention, the heat conduction oil is conveyed into the heating cavity through the heat conduction oil circulation device and is pumped out through the heat conduction oil pipe at the other end of the heating cavity, circulation of the heat conduction oil in the heating cavity is realized, one ends of the first oil inlet pipe and the first oil outlet pipe of the heat conduction pipe are positioned on the rotating shaft of the rotary drum body, abrasion to bending parts of the first oil inlet pipe and the first oil outlet pipe is reduced, the rotary driving mechanism drives the rotary drum body to rotate only to drive the first oil inlet pipe and the first oil outlet pipe to rotate, the second oil inlet pipe and the second oil outlet pipe keep stable state to convey the heat conduction oil, the service life of the heat conduction oil pipe is prolonged, and the first oil inlet pipe, the first oil outlet pipe, the second oil inlet pipe and the second oil outlet pipe can be independently replaced, so that the maintenance cost is reduced.
4. According to the invention, the internal space of the heating cavity is compressed by the expansion air bag in the heating cavity, so that the heat conduction oil in the heating cavity is attached to the outer wall of the reaction cavity, a gap is avoided between the heat conduction oil moving outwards and the outer wall of the reaction cavity when the rotary drum body rotates to cause centrifugal force, and the excessive pressure in the reaction cavity caused by injecting excessive heat conduction oil into the heating cavity can be avoided, the structural stability of the rotary drum body is protected, and the burden of the rotary driving mechanism for driving the rotary drum body to rotate is reduced.
5. According to the invention, the vacuum environment in the reaction cavity is ensured by connecting the exhaust pipe with the vacuum generator, the connector at one end of the exhaust pipe and the air pipe connector on the movable valve core matched mounting bracket are rapidly connected when the rotary drum body intermittently rotates, the reaction cavity is communicated with the vacuum generator only when the air pipe connector is connected with the connector, the movable valve core seals the exhaust pipe when the rotary drum body rotates, and the vacuum environment in the reaction cavity is ensured to be stable when the rotary drum body rotates, so that the effective solid-phase tackifying processing is ensured.
Drawings
FIG. 1 is a perspective view of a device for preparing a high barrier MXD6 package in a first operating condition;
FIG. 2 is a second perspective view of a device for producing a high barrier MXD6 package in a first operating condition;
FIG. 3 is a side view of a device for preparing a high barrier MXD6 package in a first operating condition;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
FIG. 5 is an enlarged view of a portion at B of FIG. 4;
FIG. 6 is an enlarged view of a portion of FIG. 4 at C;
FIG. 7 is a side view of a device for preparing a high barrier MXD6 package in a second operating condition;
FIG. 8 is a cross-sectional view taken at D-D of FIG. 7;
FIG. 9 is an enlarged view of a portion at E of FIG. 8;
FIG. 10 is an enlarged view of a portion at F of FIG. 8;
fig. 11 is a partial enlarged view at G of fig. 8.
The reference numerals in the figures are:
1-a drum body;
11-shaft sleeve;
111-connecting cylinder; 112-a swivel bearing;
12-a reaction chamber;
121-a feed tube; 122-a discharge pipe; 123-a plugging cap; 124-sealing plug; 125-sealing ring;
13-a heating chamber;
131-separator; 132-inflating the balloon; 133-a gas generator;
14-an oil guide pipe;
141-a first oil inlet pipe; 142-a first flowline; 143-a second oil inlet pipe; 144-a second flowline;
15-an exhaust pipe;
151-a filter screen; 152-a connector; 153-moving the spool; 154-first intake passage; 155-a second intake passage; 156-third intake passage; 157-limiting rings; 158-a return spring; 159-jack;
2-mounting a bracket;
21-shaft holes;
22-mounting sleeve;
23-an air pipe connector;
231-ejector rod;
3-a rotary drive mechanism.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
Referring to fig. 1 to 4: the preparation device of the high-barrier MXD6 packaging material comprises a drum body 1 and a mounting bracket 2 for inserting the drum body 1, wherein a rotary driving mechanism 3 for driving the drum body 1 to rotate is arranged on the mounting bracket 2, the drum body 1 is a cylindrical barrel horizontally inserted on the mounting bracket 2, shaft sleeves 11 are coaxially arranged at two ends of the drum body 1, the shaft sleeves 11 are inserted in shaft holes 21 of the mounting bracket 2, and a reaction cavity 12 and a heating cavity 13 are arranged inside the drum body 1; the reaction chamber 12 is a cylindrical cavity obliquely arranged in the rotary drum body 1, the highest end and the lowest end of the reaction chamber 12 are provided with a feed pipe 121 and a discharge pipe 122 which are communicated with the outside of the rotary drum body 1, and prepolymer enters the reaction chamber 12 through the feed pipe 121; the heating cavity 13 surrounds the periphery of the reaction cavity 12, oil guide pipes 14 are respectively arranged at two ends of the heating cavity 13, the oil guide pipes 14 penetrate through the shaft sleeve 11 to extend to the outside of the rotary drum body 1 and are connected with a heat conduction oil circulation device, and the heat conduction oil is positioned in the heating cavity 13 to heat the periphery of the reaction cavity 12; one end of the heating cavity 13 is connected with an exhaust pipe 15, and the exhaust pipe 15 extends to the outside of the rotary drum body 1 and is connected with a vacuum generator.
In the process of preparing the MXD6, the prepolymer obtained by processing is led into the drum body 1 to enter a solid-phase tackifying step, the drum body 1 in the embodiment is a cylindrical barrel which is horizontally inserted on the mounting bracket 2, the two ends of the drum body 1 are provided with shaft sleeves 11 which are in the same straight line with the self axis, and the drum body 1 is inserted on the mounting bracket 2 through the shaft sleeves 11 to keep the self axis horizontal, so that the pressure brought by shaking the transmission positions of the rotary driving mechanism 3 and the drum body 1 when the rotary driving mechanism 3 drives the drum body 1 to rotate is reduced. The rotation driving mechanism 3 in this embodiment may be a servo motor, and the rotation driving mechanism 3 is in transmission connection with a tooth slot arranged on the circumference side of the drum body 1 through a transmission gear, or may be a transmission device for driving the drum body 1 to rotate. In this embodiment, the reaction chamber 12 and the heating chamber 13 are disposed inside the drum body 1, the reaction chamber 12 is a cylindrical cavity obliquely disposed inside the drum body 1, and the reaction chamber 12 may be separately installed or integrally formed. The center point of the axis of the reaction chamber 12 coincides with the center point of the axis of the drum body 1, the highest end and the lowest end of the reaction chamber 12 are respectively contacted with the inner wall of the drum body 1, and a feed pipe 121 and a discharge pipe 122 which penetrate through the drum body 1 and are connected to the outside of the drum body 1 are arranged. Before processing, the rotary driving mechanism 3 drives the rotary drum body 1 to rotate to a position where the feeding pipe 121 faces upwards vertically, and prepolymer enters the reaction cavity 12 inside the rotary drum body 1 through the feeding pipe 121. When the rotary drum body 1 rotates, the prepolymer is positioned in the reaction cavity 12 to oscillate, so that full contact is kept, after the processing is finished, a product obtained by solid-phase tackifying is discharged through a discharging pipe 122 at the bottommost end of the reaction cavity 12, no dead angle exists in the reaction cavity 12, and the prepolymer can be completely discharged while full contact is ensured. When the prepolymer is subjected to solid-phase tackifying processing, the reaction cavity 12 needs to be heated, a heating cavity 13 surrounding the reaction cavity 12 is arranged on the periphery of the reaction cavity 12 in the embodiment, heat conduction oil is directly filled in the heating cavity 13, and the heat conduction oil is directly attached to the outer wall of the reaction cavity 12 to uniformly heat the prepolymer in the reaction cavity 12. The oil guide pipes 14 are arranged at the two ends of the heating cavity 13, and the heat-conducting oil circulation device conveys the heat-conducting oil into the heating cavity 13 through the oil guide pipes 14 and extracts the heat-conducting oil from the other end of the heating cavity 13, so that circulation of the heat-conducting oil in the heating cavity 13 is realized, the heat-conducting oil in the heating cavity 13 is always at a proper temperature, and the stable reaction environment in the reaction cavity 12 is ensured. One side of the reaction cavity 12 is also provided with an exhaust pipe 15, and the vacuum generator can vacuumize the reaction cavity 12 through the exhaust pipe 15 and also can convey nitrogen into the reaction cavity 12 so as to meet the gas environment of solid-phase tackifying processing.
Referring to fig. 4 to 8: the heating cavity 13 is formed by dividing the partition plates 131 attached to the two ends of the reaction cavity 12 by matching with the inner wall of the rotary drum body 1; the oil guide pipe 14 includes a first oil inlet pipe 141 and a first oil outlet pipe 142 which are inserted in the partition plate 131, and the other ends of the first oil inlet pipe 141 and the first oil outlet pipe 142 are inserted in a connection cylinder 111 coaxially provided in the sleeve 11.
The heating chamber 13 in this embodiment is formed by fitting the partition plates 131 at two ends of the reaction chamber 12 and matching with the inner wall of the drum body 1, the circumference of the partition plates 131 is kept sealed, the partition plates 131 are located at two ends of the drum body 1 to form a cavity, heat insulation materials can be filled in the cavity to insulate the reaction chamber 12, a detection device can be installed to monitor the temperature of the reaction chamber 12, the oil guide pipe 14 is inserted into the partition plates 131 at two ends of the reaction chamber 12 through the first oil inlet pipe 141 and the first oil outlet pipe 142, the other ends of the first oil inlet pipe 141 and the first oil outlet pipe 142 extend into the shaft sleeves 11 at two ends of the drum body 1, and the connecting cylinders 111 coaxially arranged inside the shaft sleeves 11 keep the axes of one ends of the first oil inlet pipe 141 and the first oil outlet pipe 142 on the same straight line with the rotating shaft of the drum body 1, so that smooth movement of the heat conduction oil can be ensured when the drum body 1 rotates, the abrasion to the first oil inlet pipe 141 and the first oil outlet pipe 142 is reduced, and the service life of the oil guide pipe 14 is prolonged.
Referring to fig. 4 to 8: the end of the connecting cylinder 111, which is far away from the first oil inlet pipe 141 and the first oil outlet pipe 142, is coaxially provided with a swivel bearing 112; the oil guide pipe 14 further comprises a second oil inlet pipe 143 and a second oil outlet pipe 144, one end, facing the inside of the drum body 1, of the second oil inlet pipe 143 and the second oil outlet pipe 144 is coaxially connected with the rotating bearing 112, and the other ends of the second oil inlet pipe 143 and the second oil outlet pipe 144 are respectively connected with the output end and the input end of the heat conducting oil circulating device.
The oil guide pipe 14 in this embodiment further includes a second oil inlet pipe 143 and a second oil outlet pipe 144, the second oil inlet pipe 143 is connected to the output end of the heat conduction oil circulation device, and a rotating bearing 112 is coaxially installed on the other end of the second oil inlet pipe 143 and is connected to the other end of the connecting cylinder 111 connected to the first oil inlet pipe 141 in the shaft sleeve 11 of the drum body 1 through the rotating bearing 112. Similarly, the second oil outlet pipe 144 is connected to the other end of the connecting cylinder 111 connected with the first oil outlet pipe 142 in the shaft sleeve 11 of the drum body 1 through the rotating bearing 112, the other end of the second oil outlet pipe 144 is fixedly connected with the input end of the heat conducting oil circulating device, the rotating bearing 112 is rotationally connected with the connecting cylinder 111, and therefore when the drum body 1 is driven by the rotating driving mechanism 3 to rotate, the first oil inlet pipe 141 and the first oil outlet pipe 142 can be driven to rotate, the second oil inlet pipe 143 and the second oil outlet pipe 144 keep steady state to convey heat conducting oil, the service life of the oil guide pipe 14 is prolonged, the first oil inlet pipe 141, the first oil outlet pipe 142, the second oil inlet pipe 143 and the second oil outlet pipe 144 can be independently replaced, and maintenance cost is reduced. The connection positions of the swivel bearing 112, the connection cylinder 111 and the oil guide pipe 14 should be kept airtight to prevent leakage of the heat transfer oil.
Referring to fig. 4 and 8: at least one expansion air bag 132 is arranged in the heating cavity 13, and the expansion air bag 132 is communicated with a gas generator 133 arranged outside the rotary drum body 1 through an air tap.
In this embodiment, at least one expansion air bag 132 is disposed in the heating cavity 13, the expansion air bag 132 keeps a contracted state when heat conduction oil enters the heating cavity 13, when a proper amount of heat conduction oil is filled in the heating cavity 13, the rotary driving mechanism 3 drives the drum body 1 to rotate for solid-phase tackifying processing, when the drum body 1 rotates, the gas generator 133 outside the drum body 1 starts to input gas into the expansion air bag 132 through the gas nozzle, so that the expansion air bag 132 expands, the internal space of the heating cavity 13 is compressed, the heat conduction oil in the heating cavity 13 is ensured to be attached to the outer wall of the reaction cavity 12, gaps are avoided between the heat conduction oil moving outwards and the outer wall of the reaction cavity 12 when the centrifugal force caused by the rotation of the drum body 1 is avoided, excessive pressure in the reaction cavity 12 caused by the injection of excessive heat conduction oil into the heating cavity 13 is avoided, the structural stability of the drum body 1 is protected, and the burden of the rotary driving mechanism 3 to drive the drum body 1 is reduced.
Referring to fig. 11: a filter screen 151 is arranged at the joint of the exhaust pipe 15 and the reaction chamber 12.
The reaction chamber 12 in this embodiment is connected with the exhaust pipe 15 to ensure the gas environment in the reaction chamber 12, and when the vacuum generator extracts gas into the reaction chamber 12, the filter screen 151 disposed at the connection between the exhaust pipe 15 and the reaction chamber 12 filters solid particles contained in the gas, so that the amount of the reverse raw materials is reduced, and the damage caused by the solid particles entering the vacuum generator is avoided.
Referring to fig. 6 to 9: a connector 152 is arranged at one end of the exhaust pipe 15 far away from the filter screen 151, a movable valve core 153 is coaxially arranged at the connector 152, and the movable valve core 153 moves along the axis of the exhaust pipe 15; a mounting sleeve 22 is arranged on one side of the mounting bracket 2 facing the exhaust pipe 15, the axis of the mounting sleeve 22 and the axis of the exhaust pipe 15 are positioned on the same straight line, an air pipe connector 23 is coaxially arranged in the mounting sleeve 22, and one end of the air pipe connector 23 is connected with a vacuum generator; the air pipe connector 23 is connected with the connector 152 to push the movable valve core 153 to move, and the air pipe connector 23 is separated from the connector 152 in the reaction cavity 12 communicated with the vacuum generator, so that the movable valve core 153 seals the exhaust pipe 15.
The exhaust pipe 15 in this embodiment is provided with connector 152 away from the one end of filter screen 151, rotary driving mechanism 3 drive rotary drum body 1 intermittent type rotation, connector 152 can be connected with the air pipe connector 23 of installation cover 22 department installation when rotary drum body 1 stops rotating when being in same straight line with installation cover 22 on installing support 2, realize the intercommunication of reaction chamber 12 and vacuum generator, be provided with mobilizable removal case 153 in the connector 152, when the air pipe connector 23 in the installation cover 22 is connected with connector 152, air pipe connector 23 drives removal case 153 and moves to first working position, exhaust pipe 15 and installation cover 22 intercommunication at this moment, when air pipe connector 23 and connector 152 are not connected, removal case 153 is in the second working position and carries out the shutoff to exhaust pipe 15, guarantee that the vacuum environment in the reaction chamber 12 is stable when rotary drum body 1 rotates, thereby guarantee the effective of solid phase tackifying processing.
Referring to fig. 6 to 9: a first air inlet channel 154 extending along the axis of the air extraction pipe 15 is arranged in the connector 152, and a second air inlet channel 155 extending along the radial direction of the first air inlet channel 154 is arranged at one end of the first air inlet channel 154 positioned in the air extraction pipe 15; the movable valve core 153 is provided with a third air inlet channel 156, one end of the third air inlet channel 156 is arranged in parallel with the axis of the second air inlet channel 155, and the other end of the third air inlet channel 156 is communicated with the interior of the exhaust pipe 15; when the moving valve core 153 moves to the third air inlet channel 156 and the second air inlet channel 155 on the connector 152 are on the same straight line, the air pipe connector 23 is communicated with the air extraction pipe 15.
The connector 152 in this embodiment is provided with a first air inlet channel 154 extending along the axis of the air extraction pipe 15, when the air pipe connector 23 is connected with the connector 152, the first air inlet channel 154 is communicated with the air pipe connector 23, one end of the first air inlet channel 154 is provided with a second air inlet channel 155 extending along the radial direction, and the second air inlet channel 155 is blocked by the moving valve core 153 when the moving valve core 153 is in the second working position. When the air pipe connector 23 is connected with the connector 152, the air pipe connector 23 drives the movable valve core 153 to move to the first working position, and at this time, the third air inlet channel 156 on the movable valve core 153 is communicated with the second air inlet channel 155, so as to realize the communication between the reaction chamber 12 and the air pipe connector 23.
Referring to fig. 6 to 9: a limiting ring 157 surrounding the interior of the exhaust pipe 15 is arranged in the exhaust pipe 15, a plurality of return springs 158 are arranged on one side of the limiting ring 157 facing the movable valve core 153, and the return springs 158 are elastically connected with the limiting ring 157 and the movable valve core 153; at least one jack 159 is arranged on the connector 152, a push rod 231 which is on the same line with the axis of the jack 159 is arranged on one side of the air pipe connector 23 facing the air extraction pipe 15, and the push rod 231 is inserted into the jack 159 to push the movable valve core 153 to move.
In this embodiment, a surrounding limiting ring 157 is disposed in the exhaust pipe 15, a hole for air circulation is formed in the limiting ring 157, a plurality of return springs 158 are disposed on one side of the limiting ring 157 facing the moving valve core 153, the return springs 158 apply the elastic force of the moving valve core 153 moving toward the second working position, a jack 159 is disposed on the connector 152, a push rod 231 on the same line with the jack 159 is disposed on one side of the air pipe connector 23 facing the exhaust pipe 15, when the air pipe connector 23 is connected with the moving valve core 153, the push rod 231 is inserted into the jack 159 to push the moving valve core 153 to move to the first working position, at this time, the return springs 158 compress, and when the air pipe connector 23 is separated from the moving valve core 153, the moving valve core 153 automatically returns under the elastic force of the return springs 158, so as to keep the sealing of the reaction cavity 12.
Referring to fig. 4 and 10: the feed pipe 121 and the discharge pipe 122 of the reaction chamber 12 are closed by a detachable plugging cap 123; the sealing plug 124 is arranged on the sealing cap 123, the sealing plug 124 is sleeved with the sealing ring 125, and the sealing ring 125 is attached to the inner walls of the feeding pipe 121 and the discharging pipe 122 to seal the feeding pipe 121 and the discharging pipe 122.
The feeding pipe 121 and the discharging pipe 122 on the reaction chamber 12 in this embodiment are plugged through the plugging cap 123 in the processing state, when the plugging cap 123 is installed on the feeding pipe 121 and the discharging pipe 122, the sealing plug 124 is inserted into the feeding pipe 121 and the discharging pipe 122, and the sealing ring 125 arranged on the periphery of the sealing plug 124 is attached to the inner walls of the feeding pipe 121 and the discharging pipe 122 to keep sealing of the feeding pipe 121 and the discharging pipe 122, so that the vacuum environment inside the reaction chamber 12 is ensured to be stable.
A preparation process of a high-barrier MXD6 packaging material is applied to a preparation device of the high-barrier MXD6 packaging material, and comprises the following steps of;
step one: prepolymer is charged into the reaction chamber 12 of the bowl body 1 through a feed pipe 121;
step two: the reaction chamber 12 is heated by injecting heat conduction oil into the heating chamber 13 through the oil guide pipe 14;
step three: the rotary driving mechanism 3 drives the rotary drum body 1 to intermittently rotate, and the vacuum generator is positioned in the rotary drum body 1 to intermittently vacuumize the interior of the reaction cavity 12 through the exhaust pipe 15;
step four: the solid stating process is completed and the reactants are withdrawn through discharge tube 122.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (4)
1. The preparation device of the high-barrier MXD6 packaging material comprises a drum body (1) and a mounting bracket (2) for inserting the drum body (1), wherein a rotary driving mechanism (3) for driving the drum body (1) to rotate is mounted on the mounting bracket (2), and the preparation device is characterized in that the drum body (1) is a cylindrical cylinder horizontally inserted on the mounting bracket (2), shaft sleeves (11) are coaxially arranged at two ends of the drum body (1), the shaft sleeves (11) are inserted in shaft holes (21) of the mounting bracket (2), and a reaction cavity (12) and a heating cavity (13) are formed in the drum body (1);
the reaction cavity (12) is a cylindrical cavity obliquely arranged in the rotary drum body (1), the highest end and the lowest end of the reaction cavity (12) are provided with a feed pipe (121) and a discharge pipe (122) which are communicated with the outside of the rotary drum body (1), and prepolymer enters the reaction cavity (12) through the feed pipe (121);
the heating cavity (13) surrounds the periphery of the reaction cavity (12), oil guide pipes (14) are respectively arranged at two ends of the heating cavity (13), the oil guide pipes (14) penetrate through the shaft sleeve (11) to extend to the outside of the rotary drum body (1) and are connected with the heat conduction oil circulation device, and the heat conduction oil is positioned in the heating cavity (13) to heat the periphery of the reaction cavity (12);
one end of the heating cavity (13) is connected with an exhaust pipe (15), and the exhaust pipe (15) extends to the outside of the rotary drum body (1) and is connected with a vacuum generator;
the heating cavity (13) is formed by dividing a partition plate (131) attached to two ends of the reaction cavity (12) by matching with the inner wall of the rotary drum body (1);
the oil guide pipe (14) comprises a first oil inlet pipe (141) and a first oil outlet pipe (142) which are inserted on the partition plate (131), and the other ends of the first oil inlet pipe (141) and the first oil outlet pipe (142) are inserted in a connecting cylinder (111) coaxially arranged in the shaft sleeve (11);
one end of the connecting cylinder (111) far away from the first oil inlet pipe (141) and the first oil outlet pipe (142) is coaxially provided with a rotary bearing (112);
the oil guide pipe (14) further comprises a second oil inlet pipe (143) and a second oil outlet pipe (144), one end, facing the inside of the rotary drum body (1), of the second oil inlet pipe (143) and the second oil outlet pipe (144) is coaxially connected with the rotary bearing (112), and the other ends of the second oil inlet pipe (143) and the second oil outlet pipe (144) are respectively connected with the output end and the input end of the heat conduction oil circulation device;
a filter screen (151) is arranged at the joint of the exhaust pipe (15) and the reaction cavity (12);
one end of the exhaust pipe (15) far away from the filter screen (151) is provided with a connector (152), a movable valve core (153) is coaxially arranged at the connector (152), and the movable valve core (153) moves along the axis of the exhaust pipe (15);
one side of the mounting bracket (2) facing the exhaust pipe (15) is provided with a mounting sleeve (22), the axis of the mounting sleeve (22) and the axis of the exhaust pipe (15) are positioned on the same straight line, an air pipe connector (23) is coaxially arranged in the mounting sleeve (22), and one end of the air pipe connector (23) is connected with a vacuum generator;
the air pipe connector (23) is connected with the connector (152) to push the movable valve core (153) to move, the air pipe connector (23) is separated from the connector (152) in the reaction cavity (12) communicated with the vacuum generator, and the movable valve core (153) seals the exhaust pipe (15);
a first air inlet channel (154) extending along the axis of the air extraction pipe (15) is arranged in the connector (152), and a second air inlet channel (155) extending along the radial direction of the first air inlet channel (154) is arranged at one end of the first air inlet channel (154) positioned in the air extraction pipe (15);
a third air inlet channel (156) is arranged on the movable valve core (153), one end of the third air inlet channel (156) is arranged in parallel with the axis of the second air inlet channel (155), and the other end of the third air inlet channel (156) is communicated with the interior of the exhaust pipe (15);
when the movable valve core (153) moves to the state that the third air inlet channel (156) is in the same straight line with the second air inlet channel (155) on the connector (152), the air pipe connector (23) is communicated with the air extraction pipe (15);
a limiting ring (157) surrounding the interior of the exhaust pipe (15) is arranged in the exhaust pipe (15), a plurality of return springs (158) are arranged on one side of the limiting ring (157) facing the movable valve core (153), and the return springs (158) are elastically connected with the limiting ring (157) and the movable valve core (153);
at least one jack (159) is arranged on the connector (152), a push rod (231) which is on the same straight line with the axis of the jack (159) is arranged on one side of the air pipe connector (23) facing the air extraction pipe (15), and the push rod (231) is inserted into the jack (159) to push the movable valve core (153) to move.
2. The preparation device of the high-barrier MXD6 packaging material according to claim 1, characterized in that at least one expansion airbag (132) is installed in the heating chamber (13), and the expansion airbag (132) is connected to a gas generator (133) installed outside the drum body (1) through an air tap.
3. The device for preparing a high barrier MXD6 packaging material according to claim 1, characterized in that the feed pipe (121) and the discharge pipe (122) of the reaction chamber (12) are closed by means of a removable closing cap (123);
be provided with sealing plug (124) on shutoff cap (123), the cover is equipped with sealing washer (125) on sealing plug (124), and sealing washer (125) laminating inlet pipe (121) and discharging pipe (122) inner wall carry out shutoff to inlet pipe (121) and discharging pipe (122).
4. A process for preparing a high-barrier MXD6 packaging material, applied to a device for preparing a high-barrier MXD6 packaging material according to any one of claims 1 to 3, characterized by comprising the steps of;
step one: the prepolymer is filled into a reaction cavity (12) of the rotary drum body (1) through a feed pipe (121);
step two: injecting heat conduction oil into the heating cavity (13) through the oil guide pipe (14) to heat the reaction cavity (12);
step three: the rotary driving mechanism (3) drives the rotary drum body (1) to intermittently rotate, and the vacuum generator is positioned in the rotary drum body (1) to intermittently vacuumize the inside of the reaction cavity (12) through the exhaust pipe (15);
step four: the solid-phase tackifying process is completed and the reactants are withdrawn through a discharge pipe (122).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310282825.6A CN115990453B (en) | 2023-03-22 | 2023-03-22 | Preparation device and process of high-barrier MXD6 packaging material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310282825.6A CN115990453B (en) | 2023-03-22 | 2023-03-22 | Preparation device and process of high-barrier MXD6 packaging material |
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| CN115990453B true CN115990453B (en) | 2023-07-04 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206355992U (en) * | 2016-12-27 | 2017-07-28 | 扬州惠通化工科技股份有限公司 | A kind of rotary drum heating and stirring device |
| CN115260482A (en) * | 2022-08-30 | 2022-11-01 | 安徽天驰先锋油品制造有限公司 | Brake fluid and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732187B (en) * | 2016-12-27 | 2022-06-21 | 扬州惠通科技股份有限公司 | Polymer stirring drying device |
| CN109554276A (en) * | 2018-12-06 | 2019-04-02 | 浙江清天地环境工程有限公司 | A kind of Preparation equipment and method of microbial strains |
| CN209781778U (en) * | 2019-03-25 | 2019-12-13 | 浙江德宏汽车电子电器股份有限公司 | Vacuum pump exhaust tube structure |
| CN213032507U (en) * | 2021-03-29 | 2021-04-23 | 广饶六合化工有限公司 | Reation kettle is used in hydroxypropyl guar gum production |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206355992U (en) * | 2016-12-27 | 2017-07-28 | 扬州惠通化工科技股份有限公司 | A kind of rotary drum heating and stirring device |
| CN115260482A (en) * | 2022-08-30 | 2022-11-01 | 安徽天驰先锋油品制造有限公司 | Brake fluid and preparation method thereof |
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| CN115990453A (en) | 2023-04-21 |
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