CN213166468U - Air energy-saving preheating device of casting machine for polyimide film - Google Patents
Air energy-saving preheating device of casting machine for polyimide film Download PDFInfo
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- CN213166468U CN213166468U CN202021707563.1U CN202021707563U CN213166468U CN 213166468 U CN213166468 U CN 213166468U CN 202021707563 U CN202021707563 U CN 202021707563U CN 213166468 U CN213166468 U CN 213166468U
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Abstract
The invention provides an air energy-saving preheating device of a salivator for a polyimide film, which comprises a gas collecting tank, a waste gas input pipe arranged at one end of the gas collecting tank and a waste gas output pipe arranged at the other end of the gas collecting tank, wherein an exhaust fan is arranged on the waste gas input pipe; the air preheating mechanism is arranged in the air collecting tank and comprises a coil pipe arranged in the middle of the air collecting tank, a plurality of annular wind shields arranged at intervals outside the coil pipe and a cylindrical heat exchange piece arranged on the inner side of the coil pipe, and an air inlet pipe and an air outlet pipe communicated with the coil pipe are arranged on the air collecting tank. The invention has simple structure, is easy to install and use, can fully utilize the heat in the waste gas of the casting machine to heat the air, and is beneficial to reducing the power consumption of the casting machine in the using process; through set up air preheating mechanism in the gas collecting tank, improved this kind of air preheating device's air heating effect greatly, heat exchange member and deep bead can realize the synchronous heating inside and outside the coil pipe on the coil pipe.
Description
Technical Field
The invention belongs to the field of casting machines, and particularly relates to an air energy-saving preheating device of a casting machine for a polyimide film.
Background
The polyimide film is one of the earliest commodities of polyimide, is used for slot insulation and cable wrapping materials of a motor, has excellent thermal stability, chemical corrosion resistance and mechanical property, is generally orange, has stable chemical property, can prevent combustion without adding a flame retardant, has wide application prospect, and is prepared by carrying out tape casting and film forming on a polyamic acid solution, stretching and then carrying out high-temperature imidization;
the casting machine is a special device for manufacturing a casting film, the casting machine is one of main production devices used in the production of polyimide films, the existing casting machine generally preheats air by hot air generated by the casting machine, the common method is that the hot air and the air are subjected to heat exchange through a heat exchanger before the hot air enters a recovery device, so that the air is preheated, the energy is saved, the production cost is reduced, the hot air generated by the casting machine can be cooled and then recovered through the heat exchange, the general heat exchange performance of the existing heat exchange device is poor, the hot air only depends on gravity flow, and the heat exchange efficiency is poor.
Disclosure of Invention
In view of this, the invention provides an air energy-saving preheating device of a casting machine for polyimide films, which aims to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an air energy-saving preheating device of a salivator for a polyimide film comprises a gas collecting tank, a waste gas input pipe arranged at one end of the gas collecting tank and a waste gas output pipe arranged at the other end of the gas collecting tank, wherein an exhaust fan is arranged on the waste gas input pipe; an air preheating mechanism is arranged in the gas collection tank, the air preheating mechanism comprises a coil pipe arranged in the middle of the gas collection tank, a plurality of annular wind shields arranged at intervals outside the coil pipe, and a cylindrical heat exchange piece arranged inside the coil pipe, and the gas collection tank is provided with an air inlet pipe and an air outlet pipe communicated with the coil pipe; the wind shield is provided with a plurality of ventilation holes, the heat exchange piece is coaxially arranged with the coil pipe, the middle part of the heat exchange piece is provided with a plurality of ventilation pipes, the length direction of each ventilation pipe is the same as that of the heat exchange piece, one end of each ventilation pipe is arranged towards the waste gas input pipe, and the other end of each ventilation pipe is arranged towards the waste gas output pipe.
Furthermore, a throttle valve is arranged on the waste gas output pipe.
Furthermore, the vent holes on the wind shield are arranged in a staggered mode.
Furthermore, a heat conducting sleeve matched with the wind shield is arranged on the outer side of the coil pipe.
Furthermore, the wind shield, the heat exchange piece and the heat conduction sleeve are all made of aluminum alloy materials.
Furthermore, a heat insulation sleeve is arranged on the outer side of the gas collection tank.
Compared with the prior art, the invention has the following advantages:
the invention has simple structure, is easy to install and use, can fully utilize the heat in the waste gas of the casting machine to heat the air, and is beneficial to reducing the power consumption of the casting machine in the using process; through set up air preheating mechanism in the gas collecting tank, this kind of air preheating device's air heating effect has been improved greatly, heat transfer spare and deep bead can realize the synchronous heating inside and outside the coil pipe on the coil pipe, the heating efficiency of the interior air of coil pipe has been improved, through set up the air exhauster on the waste gas input tube, the entering amount of waste gas has been improved, combine the choke valve that sets up on the waste gas output tube, can improve the exhaust gas pressure in the gas collecting tank, be favorable to further improving this kind of air preheating device's heating effect.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of an air preheating mechanism in an embodiment of the present invention.
Description of reference numerals:
1-a gas collection tank; 2-a waste gas output pipe; 3-an exhaust gas input pipe; 4-an exhaust fan; 5-a throttle valve; 6-air outlet pipe; 7-an air inlet pipe; 8-a ventilation pipe; 9-wind shield; 10-a vent; 11-a heat conducting sleeve; 12-a coil pipe; 13-a heat exchange member; 14-insulating sleeve.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
An energy-saving air preheating device of a casting machine for polyimide films is shown in figures 1 and 2 and comprises a gas collecting tank 1, a waste gas input pipe 3 arranged at one end of the gas collecting tank 1 and a waste gas output pipe 2 arranged at the other end of the gas collecting tank 1, wherein an exhaust fan 4 is arranged on the waste gas input pipe 3; an air preheating mechanism is arranged in the gas collection tank 1, the air preheating mechanism comprises a coil pipe 12 arranged in the middle of the gas collection tank 1, a plurality of annular wind shields 9 arranged at intervals outside the coil pipe 12, and a cylindrical heat exchange piece 13 arranged inside the coil pipe 12, and an air inlet pipe 7 and an air outlet pipe 6 communicated with the coil pipe 12 are arranged on the gas collection tank 1; specifically, the air inlet pipe 7 and the air outlet pipe 6 may adopt existing pipelines, the air inlet pipe 7 and the air outlet pipe 6 may be welded to the coil pipe 12, or may be connected by flanges, and those skilled in the art may reasonably select the installation position and installation method of the air inlet pipe 7 and the air outlet pipe 6 as required, as long as air supply to the coil pipe 12 can be realized, and details are not repeated herein; the exhaust fan 4 can adopt the existing pipeline fan, and a person skilled in the art can select a proper exhaust fan 4 as required as long as air supply into the air collecting tank 1 can be realized;
the working principle of the preheating device is that the heat in the waste gas of the casting machine is utilized to heat the air in the coil pipe 12, so that the waste utilization of the heat of the waste gas is realized, the reduction of the energy consumption of the whole casting machine in the using process is facilitated, the air can flow into the coil pipe 12 through the air inlet pipe 7, the waste gas can continuously enter the gas collecting tank 1 and heat the coil pipe 12 under the action of the exhaust fan 4, and the heated air can be discharged through the air outlet pipe 6 and is supplied for the subsequent use of the casting machine; the heat exchange piece 13 may be welded or snap-connected to the coil 12, as long as heat conduction between the heat exchange piece 13 and the coil 12 can be achieved, and those skilled in the art may also use other methods to achieve connection between the heat exchange piece 13 and the coil 12, which is not described herein again;
the wind shield 9 is provided with a plurality of ventilation holes 10, the wind shield 9 can be coaxially arranged with the coil pipe 12, the heat exchange piece 13 is coaxially arranged with the coil pipe 12, the middle part of the heat exchange piece 13 is provided with a plurality of ventilation pipes 8, the length direction of each ventilation pipe 8 is the same as that of the heat exchange piece 13, one end of each ventilation pipe 8 is arranged towards the waste gas input pipe 3, and the other end of each ventilation pipe 8 is arranged towards the waste gas output pipe 2; specifically, the wind shields 9 can have a good connection effect on the waste gas, and by arranging the plurality of wind shields 9 and arranging the vent holes on the wind shields 9, the waste gas can be stored in the gas collecting tank 1 for a longer time, which is beneficial to the heating coil 12 with better heat in the waste gas; through establishing replacement heat spare 13 in coil pipe 12 inboard, ventilation pipe 8 on the heat exchange spare 13 can greatly increased waste gas and heat exchange spare 13's area of contact, improve the heating effect of waste gas to heat exchange spare 13, thereby make the better heating coil pipe 12 of heat exchange spare 13, combine the deep bead 9 that sets up in the coil pipe 12 outside, block through deep bead 9, be favorable to most waste gas to pass through gas collection tank 1 through ventilation pipe 8, and then through heating coil pipe 12 from interior to exterior, be favorable to further improving the heating effect of coil pipe 12.
A throttle valve 5 is arranged on the waste gas output pipe 2; it is specific, choke valve 5 that current ventilation pipe 8 way of using can be adopted to choke valve 5, as long as can realize the flow control to waste gas output tube 2 can, the technical personnel in the field can select the choke valve 5 of suitable specification by oneself as required, operating personnel is through the angle of opening and shutting of valve clack in the control choke valve 5, can realize the restriction to waste gas output tube 2 exhaust flow, under the effect of air exhauster 4 continuous air feed, gas collection tank 1 content easily forms slight high pressure, gas keeps warm or heaies up more easily under highly compressed effect, and then the holistic temperature of waste gas in gas collection tank 1 has been improved, be favorable to improving the heating temperature and the heating effect of this kind of preheating device to the air.
The ventilation holes 10 on the wind shield 9 are arranged in a staggered manner; specifically, through crisscross ventilation hole 10 that sets up, can improve the effect that blocks of deep bead 9 to waste gas, reduce the flow velocity of waste gas in the gas collecting tank 1, improve the heating effect of waste gas.
A heat conducting sleeve 11 matched with the wind shield 9 is arranged on the outer side of the coil pipe 12; it is specific, heat conduction cover 11 can correspond deep bead 9 and set up a plurality ofly, also can set up one, deep bead 9 can welded fastening on heat conduction cover 11, heat conduction cover 11 also can welded fastening on coil pipe 12, as long as can realize heat conduction cover 11 and deep bead 9 stable connection can, through setting up heat conduction cover 11, heat on the deep bead 9 also can be fine conduct on coil pipe 12, the heat exchange piece and the deep bead of 12 inside and outside of coil pipe can heat the interior air of coil pipe 12 simultaneously, the heating effect of the interior air of coil pipe 12 has further been improved.
The wind shield 9, the heat exchange piece 13 and the heat conduction sleeve 11 are all made of aluminum alloy materials; it is specific, the aluminum alloy material has good heat conductivity, can set up the mounting hole that is used for installing ventilation pipe 8 on the heat transfer piece 13, ventilation pipe 8 can welded fastening on heat transfer piece 13, also can adopt other modes to fix on heat transfer piece 13, as long as can realize the stable laminating between ventilation pipe 8 and the heat transfer piece 13, ensure that the heat can be between heat transfer piece 13 and ventilation pipe 8 quick conduction can, ventilation pipe 8 one end is because the direct exhaust gas input pipe 3 that corresponds sets up, therefore high temperature waste gas can directly get into and heat in the ventilation pipe 8, the heat exchange efficiency of heat transfer piece 13 has been improved.
The outer side of the gas collecting tank 1 is provided with a heat-insulating sleeve 14; specifically, can set up the through-hole that intake pipe 7 and outlet duct 6 stretch out of being convenient for on the insulation cover 14, insulation cover 14 can adopt current expanded plastics insulation cover 14, also can adopt the insulation cover 14 of other materials, and the skilled person in the art can select by oneself as required, as long as can realize the heat preservation to gas collecting tank 1 can, no longer describe here.
The invention has simple structure, is easy to install and use, can fully utilize the heat in the waste gas of the casting machine to heat the air, and is beneficial to reducing the power consumption of the casting machine in the using process; through set up air preheating mechanism in the gas collecting tank, this kind of air preheating device's air heating effect has been improved greatly, heat transfer spare and deep bead can realize the synchronous heating inside and outside the coil pipe on the coil pipe, the heating efficiency of the interior air of coil pipe has been improved, through set up the air exhauster on the waste gas input tube, the entering amount of waste gas has been improved, combine the choke valve that sets up on the waste gas output tube, can improve the exhaust gas pressure in the gas collecting tank, be favorable to further improving this kind of air preheating device's heating effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a polyimide film is with energy-conserving preheating device of casting machine air which characterized in that: the device comprises a gas collecting tank, a waste gas input pipe arranged at one end of the gas collecting tank and a waste gas output pipe arranged at the other end of the gas collecting tank, wherein an exhaust fan is arranged on the waste gas input pipe; an air preheating mechanism is arranged in the gas collection tank, the air preheating mechanism comprises a coil pipe arranged in the middle of the gas collection tank, a plurality of annular wind shields arranged at intervals outside the coil pipe, and a cylindrical heat exchange piece arranged inside the coil pipe, and the gas collection tank is provided with an air inlet pipe and an air outlet pipe communicated with the coil pipe; the wind shield is provided with a plurality of ventilation holes, the heat exchange piece is coaxially arranged with the coil pipe, the middle part of the heat exchange piece is provided with a plurality of ventilation pipes, the length direction of each ventilation pipe is the same as that of the heat exchange piece, one end of each ventilation pipe is arranged towards the waste gas input pipe, and the other end of each ventilation pipe is arranged towards the waste gas output pipe.
2. The air energy-saving preheating device of the casting machine for the polyimide film, according to claim 1, is characterized in that: and a throttle valve is arranged on the waste gas output pipe.
3. The air energy-saving preheating device of the casting machine for the polyimide film, according to claim 1, is characterized in that: the ventilation holes on the wind shield are arranged in a staggered mode.
4. The air energy-saving preheating device of the casting machine for the polyimide film, according to claim 1, is characterized in that: and a heat conduction sleeve matched with the wind shield is arranged on the outer side of the coil pipe.
5. The air energy-saving preheating device of the casting machine for the polyimide film, according to claim 4, is characterized in that: and the wind shield, the heat exchange piece and the heat conduction sleeve are all made of aluminum alloy materials.
6. The air energy-saving preheating device of the casting machine for the polyimide film, according to claim 1, is characterized in that: and a heat insulation sleeve is arranged on the outer side of the gas collection tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021707563.1U CN213166468U (en) | 2020-08-17 | 2020-08-17 | Air energy-saving preheating device of casting machine for polyimide film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021707563.1U CN213166468U (en) | 2020-08-17 | 2020-08-17 | Air energy-saving preheating device of casting machine for polyimide film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213166468U true CN213166468U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021707563.1U Active CN213166468U (en) | 2020-08-17 | 2020-08-17 | Air energy-saving preheating device of casting machine for polyimide film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213166468U (en) |
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2020
- 2020-08-17 CN CN202021707563.1U patent/CN213166468U/en active Active
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