CN109822977B - Rolling and drying combined mechanism and drying and flattening method - Google Patents
Rolling and drying combined mechanism and drying and flattening method Download PDFInfo
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- CN109822977B CN109822977B CN201910198800.1A CN201910198800A CN109822977B CN 109822977 B CN109822977 B CN 109822977B CN 201910198800 A CN201910198800 A CN 201910198800A CN 109822977 B CN109822977 B CN 109822977B
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Abstract
The invention discloses a rolling and drying combined mechanism which comprises a plurality of rolling mechanisms and a plurality of electric heating drying mechanisms which are alternately arranged along the advancing direction of impervious paper to be processed; the rolling mechanisms and the electric heating drying mechanisms are the same in number; the electric heating drying mechanism is provided with a drying surface for supporting and drying the impermeable paper, and the drying surface and the top end of the lower press roll are positioned on the same horizontal plane. The invention also discloses a drying and flattening method of the rolling and drying combined mechanism, which comprises the steps of firstly connecting the impermeable paper, then driving the impermeable paper to move forwards, and drying the impermeable paper at constant temperature according to a constant temperature control method. The invention can efficiently dry and flatten the impermeable paper, and has better drying and flattening effects. The constant temperature control method can ensure that the temperature fluctuation range is within the required precision range, and the energy consumption is reduced by utilizing the residual heat in the electric heating film and the whole mounting groove in the control process.
Description
Technical Field
The invention relates to a multi-layer paper compounding technology, in particular to a flattening mechanism and a drying mechanism for multi-layer impermeable paper.
Background
With the rapid development of the world economy, the mechanization is continuously improved, so that the requirements of the maintenance and repair of the machinery are continuously improved. As the industrial pollution in the world is continuously increased, the pollution is required to be reduced as much as possible in the aspect of using machinery. Due to the crisis of world energy, the energy-saving requirement is also put forward in the aspect of energy.
Most machines have problems with leakage (oil, gas, water). If the leakage problem is serious, not only is the waste of resources, but also air is polluted, the air is unfavorable for people and environment, economic loss is caused, the production environment is deteriorated, hidden dangers are brought to physical and mental health of workers, and the production and profit of a factory are directly influenced. Of course, if serious, will face the punishment of government authorities, being the responsibility of law.
The anti-leakage paper pad can play a good anti-leakage role when being used on mechanical equipment. The prior impermeable paper is produced by hand, and has lower production efficiency. In the process of designing a mechanical impermeable paper production line, a flattening mechanism and a drying mechanism need to be designed. If the paper can be flattened in the drying process, the flatness of the flattened multi-layer impermeable paper can be kept better.
Disclosure of Invention
The invention aims to provide a rolling and drying combined mechanism for alternately flattening and drying.
In order to achieve the purpose, the rolling and drying combined mechanism comprises a plurality of rolling mechanisms and a plurality of electric heating drying mechanisms which are alternately arranged along the advancing direction of the impermeable paper to be processed; the rolling mechanisms and the electric heating drying mechanisms are the same in number;
the rolling mechanism comprises a rolling rack, a lower compression roller is installed in the middle of the rolling rack through a bearing, a rolling cylinder is fixedly connected to the upper portion of the rolling rack, an extension rod of the rolling cylinder extends downwards and is connected with an upper roller mounting frame, the upper roller mounting frame is located in the rolling rack, and an upper compression roller is installed on the upper roller mounting frame through a bearing; when an extension rod of the rolling cylinder extends downwards, the upper press roller is in compression joint with the lower press roller, and when the extension rod of the rolling cylinder retracts upwards, the upper press roller is separated from the lower press roller; a central shaft of the lower compression roller extends out of the rolling rack and is provided with driven sprockets, an output shaft of the external driving mechanism is provided with a driving sprocket, and chains are wound between the driving sprocket and each driven sprocket;
the electric heating drying mechanism is provided with a drying surface for supporting and drying the impermeable paper, and the drying surface and the top end of the lower press roll are positioned on the same horizontal plane.
The electric heating drying mechanism comprises an electric control device and an electric heating drying rack, the electric heating drying rack is provided with supporting legs and a heat preservation plate connected to the top ends of the supporting legs, the heat preservation plate is horizontally arranged, and an installation groove is concavely formed in the upper surface of the heat preservation plate; a refractory plate made of refractory materials is horizontally arranged in the mounting groove, a plurality of heating grooves are arranged on the upper surface of the refractory plate at intervals, and electric heating films are embedded in the heating grooves; the top of the mounting groove is covered with a heating plate which seals the fire-resistant plate and each electrothermal film in the mounting groove; the top surface of the heating plate is used as the drying surface; a temperature sensor is arranged in the mounting groove, and all the electric heating films are connected in parallel;
the electric heating film and the temperature sensor of each electric heating drying mechanism are connected with an electric control device, and the electric control device is connected with a display screen.
The drying device also comprises a roller drying mechanism, wherein the roller drying mechanism comprises a frame type roller drying rack, the top of the roller drying rack is fixedly connected with a first air cylinder and a second air cylinder, the first air cylinder and the second air cylinder are arranged in parallel at intervals, and extension rods of the first air cylinder and the second air cylinder face to the right lower side; the first cylinder and the second cylinder are respectively connected with a driven press roller through a first transmission mechanism and a second transmission mechanism; the first transmission mechanism and the second transmission mechanism are both positioned in the roller drying rack;
the lower part of the roller drying rack is rotatably connected with a hot-pressing roller, the axis of the hot-pressing roller is positioned right below the axis of the dynamic pressure roller, and when the extension rod of the first air cylinder and the extension rod of the second air cylinder extend downwards, the bottom end of the driven pressing roller is in pressure joint with the top end of the hot-pressing roller; when the extension rod of the first cylinder and the extension rod of the second cylinder retract upwards, the driven press roller is separated from the hot-pressing roller; the hot-pressing roller is in transmission connection with an external power device; the hot pressing roller is internally provided with a hot oil cavity for containing hot oil;
a first roller set and a second roller set are respectively arranged on the two radial sides of the hot-pressing roller;
the first roller set comprises a first carrier roller and a first reversing roller, wherein the first carrier roller and the axis of the hot pressing roller are positioned on the same horizontal plane, and the first reversing roller is positioned below the hot pressing roller;
the second roller set comprises a second carrier roller and a second reversing roller, the second carrier roller and the axis of the hot pressing roller are positioned on the same horizontal plane, and the second reversing roller is positioned below the hot pressing roller;
the first reversing roller and the second reversing roller are respectively in compression joint with the hot-pressing roller barrel.
The first transmission mechanism comprises a first bearing seat and a first central shaft, the first bearing seat is connected to the lower end of the extension rod of the first air cylinder, one end of the first central shaft is installed in the first bearing seat through a bearing, and the other end of the first central shaft is connected with the center of one end of the driven press roll;
the second transmission mechanism comprises a second bearing seat and a second central shaft, the second bearing seat is connected to the lower end of the extension rod of the second air cylinder, one end of the second central shaft is installed in the second bearing seat through a bearing, and the other end of the second central shaft is connected with the central part of the other end of the driven press roller.
The center part of one end of the hot-pressing roller is connected with a third central shaft, the third central shaft is arranged in a third bearing seat through a bearing, and the third bearing seat is fixedly connected to the roller drying rack;
the center part of the other end of the hot-pressing roller is connected with a fourth central shaft, the fourth central shaft is arranged in a fourth bearing seat through a bearing, and the fourth bearing seat is fixedly connected to the roller drying rack; the fourth central shaft extends out of the roller drying rack and is in transmission connection with an external power device.
The hot-pressing roller comprises an outer cylinder and an inner cylinder positioned in the outer cylinder, and the inner cylinder and the outer cylinder are arranged coaxially;
the radial surface of the third central shaft is fixedly connected with the outer cylinder body, and the axial end face of the third central shaft is fixedly connected with the end face of the inner cylinder body; an oil filling hole is formed in the axis of the third central shaft, an oil filling opening is formed in the radial surface of the third central shaft between the inner barrel and the outer barrel, and the oil filling opening of the third central shaft is communicated with the oil filling hole of the third central shaft;
the radial surface of the fourth central shaft is fixedly connected with the outer cylinder body, and the axial end face of the fourth central shaft is fixedly connected with the end face of the inner cylinder body; an oil filling hole is formed in the axis of the fourth central shaft, an oil filling opening is formed in the radial surface of the fourth central shaft between the inner barrel and the outer barrel, and the oil filling opening of the fourth central shaft is communicated with the oil filling hole of the fourth central shaft;
the hot oil cavity is enclosed between the outer surface of the inner cylinder and the inner surface of the outer cylinder.
The inner surface of the inner cylinder body is provided with a heat-insulating coating, and the axial inner surface of the outer cylinder body is provided with a heat-insulating coating.
The invention also aims to provide a drying and flattening method of the rolling and drying combined mechanism, which comprises the first step of inserting impermeable paper;
the extension rods of the rolling cylinders are retracted upwards, the impermeable paper passes through the space between the upper compression roller and the lower compression roller, and the impermeable paper is laid on the drying surface of each electric heating drying mechanism; after the impermeable paper alternately passes through each electric heating drying mechanism and each rolling mechanism, the extension rod of each rolling cylinder extends downwards, and then the rolling cylinders drive the upper compression roller to press the impermeable paper on the lower compression roller downwards;
the second step is to drive the impervious paper to move forwards;
specifically, an external driving mechanism is started to drive each rolling mechanism; driven chain wheels of all the rolling mechanisms synchronously rotate under the driving of the chains to drive the lower pressing rollers to rotate; under the action of friction force, the lower pressure roller drives the impermeable paper to move forwards, and simultaneously the upper pressure roller is driven by the impermeable paper to synchronously rotate; the anti-seepage paper moves forwards and sequentially passes through the electric heating drying mechanisms and the rolling mechanisms;
when the impermeable paper passes through the electric heating drying mechanism, drying the impermeable paper at constant temperature according to a constant temperature control method; when the impermeable paper passes through the rolling mechanism, the upper compression roller and the lower compression roller roll and flatten the impermeable paper;
the constant temperature control method comprises the following steps: the electric control device is internally provided with a memory, and a target temperature parameter tg, a current temperature parameter tn, a period parameter z and a precision parameter j are stored in the memory; the units of tg, tn and j are all degrees centigrade, and the unit of z is second;
firstly, a setting step, wherein a worker sets a value of a target temperature parameter tg, a value of a period parameter z and a value of a set precision parameter j through an electric control device;
secondly, starting a heating step, wherein a worker opens the electric heating film through the electric control device, and the electric heating film carries out radiation heating on the electric heating plate; the electric control device displays the temperature signal of the temperature sensor on a display screen;
then entering a constant temperature drying step;
the electric control device takes a temperature signal of the temperature sensor as a value of a current temperature parameter tn to periodically control the electric heating film, and each control period is z seconds;
the value of the current temperature parameter tn at the beginning of a control cycle is tn1, and the value of the current temperature parameter tn at the end of a control cycle is tn 2;
at the end of each control cycle, the electronic control unit calculates the values of (tg-tn 2) - (tn 2-tn 1) for that control cycle; when the values of (tg-tn 2) - (tn 2-tn 1) are greater than or equal to zero, keeping the opening state of the electrothermal film and continuing to perform the next control cycle; when the values of (tg-tn 2) - (tn 2-tn 1) are less than zero, the electric control device closes the electric heating film, stops heating and enters a constant-temperature drying step;
finally, drying at constant temperature; at the end of each control cycle, the electronic control device calculates the value of (tg-tn 2) for that control cycle; when the value of (tg-tn 2) is larger than j, the electric control device opens the electric heating film to heat the heating plate; when the value of (tg-tn 2) is less than or equal to j, the electric control device closes the electric heating film; and continuously performing the constant-temperature drying step until the impermeable paper stops running or the impermeable paper completely passes through the electric heating drying mechanism, and closing the electric heating film by the control device and stopping the constant-temperature drying step.
The first step also comprises the operation of connecting a drum drying mechanism into the impermeable paper, specifically, an extension rod of a first cylinder and an extension rod of a second cylinder are upwards retracted, the impermeable paper downwards bypasses a first carrier roller from above the first carrier roller and then downwards, bypasses the first reversing roller from below the first reversing roller and then upwards adheres to the surface of the hot-pressing roller; the anti-seepage paper bypasses the second reversing roller along the surface of the hot-pressing roller, then flows out of the roller drying mechanism after passing through the second reversing roller and the second carrier roller;
the anti-seepage paper is firstly connected into the roller drying mechanism, and then alternately connected into each electric heating drying mechanism and each rolling mechanism;
and in the second step, the external driving mechanism is started to drive the rolling mechanism, and the external power device is started to drive the hot-pressing roller to rotate, so that the linear velocity of the surface of the hot-pressing roller is the same as that of the surface of the lower pressing roller, and the running synchronism of the anti-seepage paper at each position is ensured.
The invention has the following advantages:
the invention enables the flattening operation and the drying operation of the impermeable paper to be carried out alternately, and compared with the flattening operation and the drying operation which are carried out sequentially, the flatness of the processed impermeable paper is improved, and the processing quality is improved.
The invention realizes the rolling mechanism, the electric heating drying mechanism and the roller drying mechanism through simple structures, and is convenient to install and maintain. The roller drying mechanism plays a role in preheating the impermeable paper, so that the electric heating drying mechanism can start constant-temperature drying earlier. The roller drying mechanism is combined with the electric heating drying mechanism, and meanwhile, the advantages of high roller drying and heating speed and more accurate temperature of electric heating drying are utilized, so that the drying effect can be ensured.
The electrothermal conversion efficiency of the electrothermal film can reach more than 98 percent, and the energy conversion rate is higher. The heated board can reduce the heat of downward transmission by a wide margin, makes the heat that the electric heat membrane produced concentrate on hot plate department, improves energy utilization.
The invention utilizes the driven compression roller and the hot-pressing roller to perform the functions of rotating, pressing and leveling the anti-seepage paper, and performs the function of drying the anti-seepage paper through the hot-pressing roller. The anti-seepage paper winds the hot pressing roller for a large half circle between the first reversing roller and the second reversing roller, the heat exchange contact area is large, the heat exchange efficiency is high, and the drying effect is good.
Realize from the crimping and the separation of compression roller and hot pressing roller through first cylinder and second cylinder, it is comparatively simple and convenient to operate. The hot oil cavity enclosed between the outer surface of the inner cylinder and the inner surface of the outer cylinder has the following advantages: if the internal cylinder is not arranged, the volume of the hot oil cavity is too large, the volume and the weight of the hot oil are both large, and the total weight of the hot-pressing roller and the hot oil in the hot-pressing roller is inevitably large, so that the energy consumption of an external power device is increased. After the inner cylinder is arranged, the use amount of hot oil is reduced, the energy consumption of an external power device is reduced, the contact area between the hot oil and the inner wall of the outer cylinder is not reduced, and the heat transfer efficiency is not reduced.
First drive mechanism and second drive mechanism simple structure can conveniently drive driven compression roller and go up and down. The inner surface of the inner cylinder body is provided with the heat-insulating coating, and the axial inner surface of the outer cylinder body is provided with the heat-insulating coating, so that the heat of hot oil can be reduced from being dissipated outwards from the axial surface of the outer cylinder body, the heat of the hot oil can be reduced from being transferred to the inner cylinder body, the heat can be transferred to the radial outer surface of the outer cylinder body in a centralized manner, and the heat can be used for heating the impermeable paper in a centralized manner.
The rolling and drying combined mechanism and the drying and flattening method thereof can efficiently perform drying and flattening operation on the impermeable paper, and have good drying and flattening effects. The constant temperature control method can stabilize the temperature near the target temperature value and ensure that the temperature fluctuation range is within the required precision range.
In the process of entering the constant-temperature drying step, when each control period is finished, the electric control device calculates values of (tg-tn 2) - (tn 2-tn 1) for the control period; when the values of (tg-tn 2) - (tn 2-tn 1) are greater than or equal to zero, continuing to perform the next control cycle; when the values of (tg-tn 2) - (tn 2-tn 1) are less than zero, the electric control device closes the electric heating film, stops heating and starts a constant-temperature drying step; such control process, make full use of the electric heat membrane and the waste heat in the whole mounting groove, finish the heating process in advance, prevented that the hot plate temperature is too high, reduced the energy consumption. According to the invention, the temperature sensor and the temperature information are displayed through the display screen, so that the temperature of workers during drying can be monitored conveniently.
After the electric heating film is closed, the electric heating film, air around the electric heating film, the fire-resistant plate and the like have residual heat exceeding the target temperature, and the residual heat can promote the temperature of the heating plate to further rise. The invention utilizes the part of waste heat, so that the temperature control is more stable and reasonable, and the electric energy is saved. If the electric heat membrane keeps the open mode all the time until reaching target temperature, will lead to the electric heat membrane to close the back, the temperature of hot plate further rises on target temperature's basis, the high temperature phenomenon probably appears.
The value of the period parameter z is adjusted by workers according to experience obtained by observation of the workers, so that the waste heat can heat the heating plate to be close to a target temperature value or just equal to the target temperature value.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of an electric heating drying mechanism;
FIG. 3 is a top view of FIG. 2 with the heating plate removed;
FIG. 4 is an enlarged view at B in FIG. 2;
FIG. 5 is an enlarged view at C in FIG. 4;
FIG. 6 is a schematic view of the construction of the present invention with the first and second roll sets removed;
FIG. 7 is a left side view of FIG. 6;
FIG. 8 is a schematic structural view of a hot press roll;
FIG. 9 is an enlarged view at A in FIG. 8;
FIG. 10 is a schematic view of the operation of the present drum drying mechanism;
fig. 11 is an electrical control schematic of the present invention.
Detailed Description
The direction from right to left in fig. 1 is the running direction of the barrier paper 23.
As shown in fig. 1 to 11, the rolling and drying combined mechanism of the invention comprises a plurality of rolling mechanisms and a plurality of electric heating and drying mechanisms which are alternately arranged along the advancing direction of the barrier paper 23 to be processed; the rolling mechanisms and the electric heating drying mechanisms are the same in number;
the rolling mechanism comprises a rolling rack 24, a lower pressing roller 25 is installed in the middle of the rolling rack 24 through a bearing, a rolling cylinder 26 is fixedly connected to the upper portion of the rolling rack 24, an extension rod of the rolling cylinder 26 extends downwards and is connected with an upper roller mounting frame 27, the upper roller mounting frame 27 is located in the rolling rack 24, and an upper pressing roller 28 is installed on the upper roller mounting frame 27 through a bearing; when the extension rod of the rolling cylinder 26 extends downwards, the upper pressing roller 28 is in pressure joint with the lower pressing roller 25, and when the extension rod of the rolling cylinder 26 retracts upwards, the upper pressing roller 28 is separated from the lower pressing roller 25; the central shaft of the lower press roll 25 extends out of the rolling rack 24 and is provided with driven sprockets 29, an output shaft of the external driving mechanism is provided with a driving sprocket, and chains are wound between the driving sprocket and each driven sprocket 29; chain drives are conventional and do not show external drive mechanisms and drive sprockets.
The electric heating drying mechanism is provided with a drying surface 30 for supporting and drying the impervious paper 23, and the drying surface 30 and the top end of the lower pressure roller 25 are positioned on the same horizontal plane.
The electric heating drying mechanism comprises an electric control device 31 and an electric heating drying rack, the electric heating drying rack is provided with supporting legs 32 and an insulation board 33 connected to the top ends of the supporting legs 32, the insulation board 33 is horizontally arranged, and the upper surface of the insulation board is concavely provided with a mounting groove 34; a fire-resistant plate 35 made of fire-resistant material is horizontally arranged in the mounting groove 34, a plurality of heating grooves 36 are arranged on the upper surface of the fire-resistant plate 35 at intervals, and electrothermal films 37 are embedded in the heating grooves 36; the top of the mounting groove 34 is covered with a heating plate 38, and the heating plate 38 seals the fire-resistant plate 35 and each electrothermal film 37 in the mounting groove 34; the top surface of the heating plate 38 serves as the drying surface 30; a temperature sensor 40 is arranged in the mounting groove 34, and all the electric heating films 37 are connected in parallel;
the electric heating film 37 and the temperature sensor 40 of each electric heating drying mechanism are connected with the electric control device 31, and the electric control device 31 is connected with the display screen 39.
The heat preservation board 33 can greatly reduce the heat transferred downwards, so that the heat generated by the electrothermal film 37 is concentrated at the heating plate 38, and the energy utilization rate is improved.
The heat insulation board 33 can be made of rock wool, glass wool, polystyrene foam plastic, cement polystyrene board or silicate composite heat insulation mortar, preferably rock wool material which is inorganic artificial fiber; the rock wool product has good heat preservation, heat insulation, sound absorption, heat resistance, non-combustion and other performances and good chemical stability. Glass wool is the second largest class of mineral wool and is also an inorganic fiber. The glass wool product has good heat preservation, heat insulation, sound absorption, non-combustion, corrosion resistance and other performances, the hand feeling is better than that of rock wool, but the price is higher than that of the rock wool. In the invention, workers do not need to contact the heat-insulation board 33 frequently, so that the hand feeling problem does not need to be considered, and the cost can be reduced by using rock wool to manufacture the heat-insulation board 33.
As shown in fig. 1, 6 to 10, the present invention further comprises a drum drying mechanism, the drum drying mechanism comprises a frame-type drum drying rack 1, the top of the drum drying rack 1 is fixedly connected with a first cylinder 2 and a second cylinder 3, the first cylinder 2 and the second cylinder 3 are arranged in parallel at intervals, and the extension rods of the first cylinder 2 and the second cylinder 3 face to the right lower side;
the first cylinder 2 and the second cylinder 3 are respectively connected with a driven compression roller through a first transmission mechanism and a second transmission mechanism; the first transmission mechanism and the second transmission mechanism are both positioned in the roller drying rack 1;
the lower part of the roller drying rack 1 is rotatably connected with a hot-pressing roller 5, the axis of the hot-pressing roller 5 is positioned right below the axis of the dynamic pressure roller, and when the extension bar of the first cylinder 2 and the extension bar of the second cylinder 3 extend downwards, the bottom end of the driven pressure roller is in pressure joint with the top end of the hot-pressing roller 5; when the extension rod of the first cylinder 2 and the extension rod of the second cylinder 3 retract upwards, the driven press roller is separated from the hot-pressing roller 5; the hot-pressing roller 5 is in transmission connection with an external power device; a hot oil cavity 6 for containing hot oil is arranged in the hot pressing roller 5;
a first roller set and a second roller set are respectively arranged on the two radial sides of the hot-pressing roller 5;
the first roller group comprises a first carrier roller 7 and a first reversing roller 8, wherein the first carrier roller and the axis of the hot pressing roller 5 are positioned on the same horizontal plane, and the first reversing roller is positioned below the side of the hot pressing roller 5;
the second roller group comprises a second carrier roller 9 and a second reversing roller 10, wherein the second carrier roller and the axis of the hot pressing roller 5 are positioned on the same horizontal plane, and the second reversing roller is positioned below the side of the hot pressing roller 5;
the first reversing roller 8 and the second reversing roller 10 are respectively pressed with the hot pressing roller 5.
The first roller set and the second roller set can be mounted on the drum drying rack 1 through a mounting rack, and can also be supported on the ground through the mounting rack.
The first transmission mechanism comprises a first bearing seat 11 and a first central shaft 12, the first bearing seat 11 is connected to the lower end of an extension rod of the first air cylinder 2, one end of the first central shaft 12 is installed in the first bearing seat 11 through a bearing, and the other end of the first central shaft 12 is connected with the central part of one end of the driven press roller;
the second transmission mechanism comprises a second bearing seat 13 and a second central shaft 14, the second bearing seat 13 is connected to the lower end of the extension rod of the second cylinder 3, one end of the second central shaft 14 is installed in the second bearing seat 13 through a bearing, and the other end of the second central shaft 14 is connected with the central part of the other end of the driven press roll (namely, the central part of one end of the driven press roll is connected with the first central shaft 12, and the central part of the other end of the driven press roll is connected with the second central shaft 14). The first center shaft 12 and the second center shaft 14 may be two shafts separately provided, or may be two parts of one shaft provided integrally.
The center part of one end of the hot-pressing roller 5 is connected with a third central shaft 15, the third central shaft 15 is installed in a third bearing seat 16 through a bearing, and the third bearing seat 16 is fixedly connected to the roller drying rack 1;
the center part of the other end of the hot-pressing roller 5 is connected with a fourth central shaft 17, the fourth central shaft 17 is installed in a fourth bearing seat 18 through a bearing, and the fourth bearing seat 18 is fixedly connected to the roller drying rack 1; the fourth central shaft 17 extends out of the roller drying rack 1 and is in transmission connection with an external power device. The third center shaft 15 and the fourth center shaft 17 may be two shafts separately provided, or may be two parts of one shaft provided integrally.
The hot-pressing roller 5 comprises an outer roller body 19 and an inner roller body 20 positioned in the outer roller body 19, wherein the inner roller body 20 and the outer roller body 19 are arranged coaxially;
the third central shaft 15 penetrates through the outer cylinder 19, the radial surface of the third central shaft 15 is fixedly connected with the outer cylinder 19, and the axial end surface of the third central shaft is fixedly connected with the end surface of the inner cylinder 20; an oil filling hole 21 is formed in the axis of the third central shaft 15, an oil filling opening 22 is formed in the radial surface of the third central shaft 15 between the inner cylinder 20 and the outer cylinder 19, and the oil filling opening 22 of the third central shaft 15 is communicated with the oil filling hole 21 of the third central shaft 15;
the fourth central shaft 17 penetrates through the outer cylinder 19, the radial surface of the fourth central shaft 17 is fixedly connected with the outer cylinder 19, and the axial end surface of the fourth central shaft is fixedly connected with the end surface of the inner cylinder 20; an oil filling hole 21 is formed in the axis of the fourth central shaft 17, an oil filling opening 22 is formed in the radial surface of the fourth central shaft 17 between the inner cylinder 20 and the outer cylinder 19, and the oil filling opening 22 of the fourth central shaft 17 is communicated with the oil filling hole 21 of the fourth central shaft 17;
the outer surface of the inner cylinder 20 and the inner surface of the outer cylinder 19 enclose the hot oil chamber 6. The inner surface of the inner cylinder 20 is provided with a heat-insulating coating, and the axial inner surface of the outer cylinder 19 is provided with a heat-insulating coating, so that the heat of hot oil can be reduced from being radiated outwards from the axial surface of the outer cylinder, the heat is transmitted to the radial outer surface of the outer cylinder in a centralized manner, and the heat is used for heating and drying the impermeable paper 23 in a centralized manner. The heat-insulating coating is prepared by the conventional technology, such as silicate composite heat-insulating mortar, and is not shown in the figure.
When the anti-seepage paper drying device is used, the anti-seepage paper 23 in processing downwards bypasses the first carrier roller 7 from the upper part of the first carrier roller 7 and then downwards, bypasses the first reversing roller 8 from the lower part of the first reversing roller 8 and then upwards attaches to the surface of the hot pressing roller 5, bypasses the surface of the hot pressing roller 5 for a large half circle, and then bypasses the second reversing roller 10 and the second carrier roller 9 and flows into the electric heating drying mechanism. Hot oil is injected into the hot oil chamber 6 through the oil injection hole 21 and the oil injection port 22, and then the oil injection hole 21 is closed (with a choke plug or a plugging cover). Or by the swivel connection structure, the oil filler hole 21 of the third center shaft 15 and the oil filler hole 21 of the fourth center shaft 17 are kept in communication with the external hot oil source at all times in operation. When the anti-seepage paper pressing machine works, the extension rod of the first cylinder 2 and the extension rod of the second cylinder 3 extend downwards, and the bottom end of the driven compression roller is in compression joint with the top end of the hot-pressing roller 5, so that the anti-seepage paper 23 is compressed. The barrier paper 23 is more flat under the rolling of the driven compression roller and the hot-pressing roller 5 when passing through the top of the hot-pressing roller 5. The barrier paper 23 is heated by the hot oil in the hot-pressing roller 5 when passing around the hot-pressing roller 5, and a drying effect is generated.
The invention also discloses a drying and flattening method of the rolling and drying combined mechanism, which comprises the first step of inserting the anti-seepage paper 23;
the first step is that the extension rods of the rolling cylinders 26 are retracted upwards, the impermeable paper 23 passes through the space between the upper compression roller 28 and the lower compression roller 25, and the impermeable paper 23 is laid on the drying surface 30 of each electric heating drying mechanism; after the impermeable paper 23 alternately passes through each electric heating drying mechanism and each rolling mechanism (at the moment, the impermeable paper 23 has tension), the extension rod of each rolling cylinder 26 extends downwards, and then the rolling cylinder 26 drives the upper press roll 28 to press the impermeable paper 23 downwards on the lower press roll 25;
the second step is to drive the barrier paper 23 to move forward;
specifically, an external driving mechanism is started to drive each rolling mechanism; driven chain wheels 29 of all the rolling mechanisms synchronously rotate under the driving of the chains to drive the lower pressing rollers 25 to rotate; under the action of friction force, the lower pressure roller 25 drives the impervious paper 23 to move forwards, and simultaneously, the upper pressure roller 28 is driven by the impervious paper 23 to synchronously rotate; the impervious paper 23 moves forwards and sequentially passes through the electric heating drying mechanisms and the rolling mechanisms;
when the barrier paper 23 passes through the electric heating drying mechanism, drying the barrier paper 23 at a constant temperature according to a constant temperature control method; when the barrier paper 23 passes through the rolling mechanism, the upper press roller 28 and the lower press roller 25 roll and flatten the barrier paper 23;
the constant temperature control method comprises the following steps: the electric control device 31 is internally provided with a memory, and the memory stores a target temperature parameter tg, a current temperature parameter tn, a period parameter z and a precision parameter j; the units of tg, tn and j are all degrees centigrade, and the unit of z is second;
firstly, a setting step, wherein a worker sets a value of a target temperature parameter tg, a value of a period parameter z and a value of a set precision parameter j through an electric control device 31;
secondly, starting a heating step, wherein a worker opens the electrothermal film 37 through the electric control device 31, and the electrothermal film 37 performs radiation heating on the electrothermal plate; the electronic control device 31 displays the temperature signal of the temperature sensor 40 on the display screen 39;
then entering a constant temperature drying step;
the electric control device 31 takes the temperature signal of the temperature sensor 40 as the value of the current temperature parameter tn to periodically control the electric heating film 37, and each control period is z seconds;
the value of the current temperature parameter tn at the beginning of a control cycle is tn1, and the value of the current temperature parameter tn at the end of a control cycle is tn 2;
at the end of each control cycle, the electronic control unit 31 calculates the values of (tg-tn 2) - (tn 2-tn 1) for that control cycle; when the values of (tg-tn 2) - (tn 2-tn 1) are greater than or equal to zero, the opening state of the electrothermal film 37 is maintained and the next control cycle is continued; when the values of (tg-tn 2) - (tn 2-tn 1) are less than zero, the electric heating film 37 is closed by the electric control device 31, heating is stopped, and a constant-temperature drying step is carried out;
finally, drying at constant temperature; at the end of each control cycle, the electronic control unit 31 calculates the value of (tg-tn 2) for that control cycle; when the value of (tg-tn 2) is larger than j, the electric control device 31 opens the electric heating film 37 to heat the heating plate 38; when the value of (tg-tn 2) is less than or equal to j, the electric control device 31 closes the electrothermal film 37; and continuously performing the constant-temperature drying step until the impermeable paper 23 stops running or the impermeable paper 23 completely passes through the electric heating drying mechanism, and closing the electric heating film 37 by the control device and stopping the constant-temperature drying step.
The temperature fluctuation range in the drying process can be controlled through the precision parameter j, and the requirements of drying different impermeable papers 23 are met.
The first step also comprises the operation that a roller drying mechanism is connected into the impermeable paper 23, specifically, an extension rod of a first cylinder and an extension rod of a second cylinder are upwards retracted, the impermeable paper 23 downwards bypasses a first carrier roller from the upper part of the first carrier roller, then downwards bypasses the first carrier roller, and then upwards clings to the surface of a hot-pressing roller from the lower part of the first reversing roller after bypassing the first reversing roller; the impervious paper 23 rounds (large half circle) to the second reversing roller along the surface of the hot-pressing roller, and then flows out of the roller drying mechanism after passing through the second reversing roller and the second carrier roller;
the impervious paper 23 is firstly connected into the roller drying mechanism, and then alternately connected into each electric heating drying mechanism and each rolling mechanism;
in the second step, the external driving mechanism is started to drive the rolling mechanism, and the external power device is started to drive the hot-pressing roller to rotate, so that the linear velocity of the surface of the hot-pressing roller is the same as that of the surface of the lower pressing roller 25, and the running synchronism of the impermeable paper 23 at each position is ensured.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention as defined in the appended claims.
Claims (2)
1. The drying and flattening method of the rolling and drying combined mechanism comprises a plurality of rolling mechanisms and a plurality of electric heating drying mechanisms which are alternately arranged along the advancing direction of the impermeable paper to be processed; the rolling mechanisms and the electric heating drying mechanisms are the same in number;
the rolling mechanism comprises a rolling rack, a lower compression roller is installed in the middle of the rolling rack through a bearing, a rolling cylinder is fixedly connected to the upper portion of the rolling rack, an extension rod of the rolling cylinder extends downwards and is connected with an upper roller mounting frame, the upper roller mounting frame is located in the rolling rack, and an upper compression roller is installed on the upper roller mounting frame through a bearing; when an extension rod of the rolling cylinder extends downwards, the upper press roller is in compression joint with the lower press roller, and when the extension rod of the rolling cylinder retracts upwards, the upper press roller is separated from the lower press roller; a central shaft of the lower compression roller extends out of the rolling rack and is provided with driven sprockets, an output shaft of the external driving mechanism is provided with a driving sprocket, and chains are wound between the driving sprocket and each driven sprocket;
the electric heating drying mechanism is provided with a drying surface for supporting and drying the impermeable paper, and the drying surface and the top end of the lower press roll are positioned on the same horizontal plane;
the electric heating drying mechanism comprises an electric control device and an electric heating drying rack, the electric heating drying rack is provided with supporting legs and a heat preservation plate connected to the top ends of the supporting legs, the heat preservation plate is horizontally arranged, and an installation groove is concavely formed in the upper surface of the heat preservation plate; a refractory plate made of refractory materials is horizontally arranged in the mounting groove, a plurality of heating grooves are arranged on the upper surface of the refractory plate at intervals, and electric heating films are embedded in the heating grooves; the top of the mounting groove is covered with a heating plate which seals the fire-resistant plate and each electrothermal film in the mounting groove; the top surface of the heating plate is used as the drying surface; a temperature sensor is arranged in the mounting groove, and all the electric heating films are connected in parallel;
the electric heating film and the temperature sensor of each electric heating drying mechanism are connected with an electric control device, and the electric control device is connected with a display screen;
the drying device also comprises a roller drying mechanism, wherein the roller drying mechanism comprises a frame type roller drying rack, the top of the roller drying rack is fixedly connected with a first air cylinder and a second air cylinder, the first air cylinder and the second air cylinder are arranged in parallel at intervals, and extension rods of the first air cylinder and the second air cylinder face to the right lower side; the first cylinder and the second cylinder are respectively connected with a driven press roller through a first transmission mechanism and a second transmission mechanism; the first transmission mechanism and the second transmission mechanism are both positioned in the roller drying rack;
the lower part of the roller drying rack is rotatably connected with a hot-pressing roller, the axis of the hot-pressing roller is positioned right below the axis of the dynamic pressure roller, and when the extension rod of the first air cylinder and the extension rod of the second air cylinder extend downwards, the bottom end of the driven pressing roller is in pressure joint with the top end of the hot-pressing roller; when the extension rod of the first cylinder and the extension rod of the second cylinder retract upwards, the driven press roller is separated from the hot-pressing roller; the hot-pressing roller is in transmission connection with an external power device; the hot pressing roller is internally provided with a hot oil cavity for containing hot oil;
a first roller set and a second roller set are respectively arranged on the two radial sides of the hot-pressing roller;
the first roller set comprises a first carrier roller and a first reversing roller, wherein the first carrier roller and the axis of the hot pressing roller are positioned on the same horizontal plane, and the first reversing roller is positioned below the hot pressing roller;
the second roller set comprises a second carrier roller and a second reversing roller, the second carrier roller and the axis of the hot pressing roller are positioned on the same horizontal plane, and the second reversing roller is positioned below the hot pressing roller;
the first reversing roller and the second reversing roller are respectively in compression joint with the hot-pressing roller barrel;
the center part of one end of the hot-pressing roller is connected with a third central shaft, the third central shaft is arranged in a third bearing seat through a bearing, and the third bearing seat is fixedly connected to the roller drying rack;
the center part of the other end of the hot-pressing roller is connected with a fourth central shaft, the fourth central shaft is arranged in a fourth bearing seat through a bearing, and the fourth bearing seat is fixedly connected to the roller drying rack; the fourth central shaft extends out of the roller drying rack and is in transmission connection with an external power device;
the hot-pressing roller comprises an outer cylinder and an inner cylinder positioned in the outer cylinder, and the inner cylinder and the outer cylinder are arranged coaxially;
the radial surface of the third central shaft is fixedly connected with the outer cylinder body, and the axial end face of the third central shaft is fixedly connected with the end face of the inner cylinder body; an oil filling hole is formed in the axis of the third central shaft, an oil filling opening is formed in the radial surface of the third central shaft between the inner barrel and the outer barrel, and the oil filling opening of the third central shaft is communicated with the oil filling hole of the third central shaft;
the radial surface of the fourth central shaft is fixedly connected with the outer cylinder body, and the axial end face of the fourth central shaft is fixedly connected with the end face of the inner cylinder body; an oil filling hole is formed in the axis of the fourth central shaft, an oil filling opening is formed in the radial surface of the fourth central shaft between the inner barrel and the outer barrel, and the oil filling opening of the fourth central shaft is communicated with the oil filling hole of the fourth central shaft;
the hot oil cavity is enclosed between the outer surface of the inner cylinder and the inner surface of the outer cylinder;
the inner surface of the inner cylinder body is provided with a heat-insulating coating, and the axial inner surface of the outer cylinder body is provided with a heat-insulating coating;
the method is characterized in that:
the first step is to insert the barrier paper;
the extension rods of the rolling cylinders are retracted upwards, the impermeable paper passes through the space between the upper compression roller and the lower compression roller, and the impermeable paper is laid on the drying surface of each electric heating drying mechanism; after the impermeable paper alternately passes through each electric heating drying mechanism and each rolling mechanism, the extension rod of each rolling cylinder extends downwards, and then the rolling cylinders drive the upper compression roller to press the impermeable paper on the lower compression roller downwards;
the second step is to drive the impervious paper to move forwards;
specifically, an external driving mechanism is started to drive each rolling mechanism; driven chain wheels of all the rolling mechanisms synchronously rotate under the driving of the chains to drive the lower pressing rollers to rotate; under the action of friction force, the lower pressure roller drives the impermeable paper to move forwards, and simultaneously the upper pressure roller is driven by the impermeable paper to synchronously rotate; the anti-seepage paper moves forwards and sequentially passes through the electric heating drying mechanisms and the rolling mechanisms;
when the impermeable paper passes through the electric heating drying mechanism, drying the impermeable paper at constant temperature according to a constant temperature control method; when the impermeable paper passes through the rolling mechanism, the upper compression roller and the lower compression roller roll and flatten the impermeable paper;
the constant temperature control method comprises the following steps: the electric control device is internally provided with a memory, and a target temperature parameter tg, a current temperature parameter tn, a period parameter z and a precision parameter j are stored in the memory; the units of tg, tn and j are all degrees centigrade, and the unit of z is second;
firstly, a setting step, wherein a worker sets a value of a target temperature parameter tg, a value of a period parameter z and a value of a set precision parameter j through an electric control device;
secondly, starting a heating step, wherein a worker opens the electric heating film through the electric control device, and the electric heating film carries out radiation heating on the electric heating plate; the electric control device displays the temperature signal of the temperature sensor on a display screen;
then entering a constant temperature drying step;
the electric control device takes a temperature signal of the temperature sensor as a value of a current temperature parameter tn to periodically control the electric heating film, and each control period is z seconds;
the value of the current temperature parameter tn at the beginning of a control cycle is tn1, and the value of the current temperature parameter tn at the end of a control cycle is tn 2;
at the end of each control cycle, the electronic control unit calculates the values of (tg-tn 2) - (tn 2-tn 1) for that control cycle; when the values of (tg-tn 2) - (tn 2-tn 1) are greater than or equal to zero, keeping the opening state of the electrothermal film and continuing to perform the next control cycle; when the values of (tg-tn 2) - (tn 2-tn 1) are less than zero, the electric control device closes the electric heating film, stops heating and enters a constant-temperature drying step;
finally, drying at constant temperature; at the end of each control cycle, the electronic control device calculates the value of (tg-tn 2) for that control cycle; when the value of (tg-tn 2) is larger than j, the electric control device opens the electric heating film to heat the heating plate; when the value of (tg-tn 2) is less than or equal to j, the electric control device closes the electric heating film; and continuously performing the constant-temperature drying step until the impermeable paper stops running or the impermeable paper completely passes through the electric heating drying mechanism, and closing the electric heating film by the electric control device and stopping the constant-temperature drying step.
2. The oven drying and flattening method according to claim 1, characterized in that:
the first step also comprises the operation of connecting a drum drying mechanism into the impermeable paper, specifically, an extension rod of a first cylinder and an extension rod of a second cylinder are upwards retracted, the impermeable paper downwards bypasses a first carrier roller from above the first carrier roller and then downwards, bypasses the first reversing roller from below the first reversing roller and then upwards adheres to the surface of the hot-pressing roller; the anti-seepage paper bypasses the second reversing roller along the surface of the hot-pressing roller, then flows out of the roller drying mechanism after passing through the second reversing roller and the second carrier roller;
the anti-seepage paper is firstly connected into the roller drying mechanism, and then alternately connected into each electric heating drying mechanism and each rolling mechanism;
and in the second step, the external driving mechanism is started to drive the rolling mechanism, and the external power device is started to drive the hot-pressing roller to rotate, so that the linear velocity of the surface of the hot-pressing roller is the same as that of the surface of the lower pressing roller, and the running synchronism of the anti-seepage paper at each position is ensured.
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| CN201910198800.1A CN109822977B (en) | 2019-03-15 | 2019-03-15 | Rolling and drying combined mechanism and drying and flattening method |
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| CN201910198800.1A CN109822977B (en) | 2019-03-15 | 2019-03-15 | Rolling and drying combined mechanism and drying and flattening method |
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| JPS5915066B2 (en) * | 1980-07-22 | 1984-04-07 | アイキ工業株式会社 | Method and apparatus for producing corrugated paper |
| CN203592727U (en) * | 2013-09-22 | 2014-05-14 | 东莞市川博机械设备有限公司 | Novel shaping, drying and conveying machine |
| CN203592726U (en) * | 2013-09-22 | 2014-05-14 | 东莞市川博机械设备有限公司 | Multilayer composite paperboard production line |
| CN203629237U (en) * | 2013-12-09 | 2014-06-04 | 江苏快乐木业集团有限公司 | Veneer dryer |
| CN104902596B (en) * | 2014-03-03 | 2017-06-30 | 南通广茂机械制造有限公司 | A kind of internal filling type electric heating roller |
| CN203844302U (en) * | 2014-05-22 | 2014-09-24 | 无锡普爱德环保科技有限公司 | Automatic coating and winding production line for adsorptive turning wheels |
| CN205138119U (en) * | 2015-11-17 | 2016-04-06 | 宁波高度纸业有限公司 | Cardboard drying device |
| CN206184811U (en) * | 2016-06-30 | 2017-05-24 | 江西江冶实业有限公司 | Copper strips belt cleaning device with function flattens |
| CN206625086U (en) * | 2017-02-03 | 2017-11-10 | 江阴市全佳数码科技有限公司 | Laminating adhesive quick-dry type thermal dye sublimation transfer printing paper production line |
| CN207702912U (en) * | 2017-11-07 | 2018-08-07 | 盘锦金田塑业有限公司 | A kind of plastic film drying equipment |
| CN207556183U (en) * | 2017-11-11 | 2018-06-29 | 安徽翰联纺织有限公司 | A kind of textile dryer |
| CN207635795U (en) * | 2017-12-07 | 2018-07-20 | 天津仁义实业有限公司 | A kind of cutlery box sheet material flash drying machine |
| CN108286153A (en) * | 2018-01-23 | 2018-07-17 | 海宁天荣纺织有限公司 | A kind of high-grade fabric fabric pressing drying unit |
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