CN210154397U

CN210154397U - Waste heat utilization system

Info

Publication number: CN210154397U
Application number: CN201920621042.5U
Authority: CN
Inventors: 杨帆; 易启堂
Original assignee: Chongqing Rock Energy Saving Technology Co Ltd
Current assignee: Chongqing Rock Energy Saving Technology Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-03-17
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a waste heat recovery utilizes technical field, discloses a waste heat utilization system, including being used for driving the endless pump package spare of heat exchange medium, still include heat absorption subassembly, stirling motor, heat exchanger and stock solution subassembly, pump package spare, heat absorption subassembly, stirling motor, heat exchanger and stock solution subassembly communicate in proper order and constitute circulation circuit, and the heat absorption subassembly is equipped with the stock solution container that the heat supply exchange medium flows including the passageway that is used for placing the chamber of high temperature work piece and heat supply exchange medium circulation, stirling generator's heat absorption end. The utility model discloses simple structure can carry out recycle to the waste heat.

Description

Waste heat utilization system

Technical Field

The utility model relates to a waste heat recovery utilizes technical field, concretely relates to waste heat utilization system.

Background

The waste heat refers to heat energy which is generated by various heat energy conversion devices, energy utilization devices, chemical reaction devices and produced high-temperature workpieces and is not utilized in the production process. A large amount of waste heat which needs to be recycled exists in the industrial fields of textile printing and dyeing, electroplating processing, chemical pharmacy, printing and drying, coal slime drying, casting, electrolytic aluminum production and the like. If the energy can be fully utilized by recycling, the industrial energy loss can be greatly reduced. Meanwhile, waste heat recycling is an important way for improving the economy and saving the fuel.

Based on the above problems, I have developed a study on the utilization of waste heat to generate electricity, heat water, produce steam, etc. by utilizing the waste heat, so as to improve the utilization rate of the waste heat and reduce the waste of energy.

SUMMERY OF THE UTILITY MODEL

The utility model provides a waste heat utilization system to reach the recycle of waste heat, improve waste heat utilization's purpose.

In order to achieve the above object, the utility model provides a following technical scheme: the waste heat utilization system comprises a pump assembly for driving a heat exchange medium to circulate, and further comprises a heat absorption assembly, a Stirling motor, a heat exchanger and a liquid storage assembly, wherein the pump assembly, the heat absorption assembly, the Stirling motor, the heat exchanger and the liquid storage assembly are sequentially communicated and form a circulation loop, the heat absorption assembly comprises a cavity for placing a high-temperature workpiece and a channel for circulating a heat supply exchange medium, and a heat absorption end of the Stirling generator is provided with a liquid storage container for flowing the heat supply exchange medium.

The utility model discloses a principle and beneficial effect:

in this scheme, can place the high temperature work piece of dysmorphism structures such as electrolytic aluminum residual anode in wrapping up in the heat absorption subassembly of this application, it scatters and disappears to reduce heat energy, then carry heat transfer medium to the heat absorption subassembly through the pump package subassembly, heat transfer medium carries out the heat transfer to the high temperature work piece in the heat absorption subassembly, the heat transfer medium that rethread time pump package subassembly will have a high temperature carries stirling motor, utilize the high temperature in the heat transfer medium to carry out the work of generating electricity through stirling generator, the heat transfer medium temperature reduces the back, still can flow through the heat exchanger, come the water heating through the heat exchanger, produce work such as steam, so reach reutilization's.

Compare with traditional heat exchanger, current heat exchanger only can heat water to the temperature of utilization to the waste heat of high temperature work piece is only about 100 ℃, and this scheme can be more than 400 ℃ through stirling motor, and waste heat utilization ratio is higher than current heat exchanger, cooperates with the heat exchanger simultaneously, carries out reutilization to the waste heat in the heat exchange medium, and the utilization ratio of so waste heat improves.

Further, an auxiliary heating assembly is communicated between the Stirling motor and the heat absorption assembly, a temperature-sensitive sensor is arranged between the auxiliary heating assembly and the heat absorption assembly, the temperature-sensitive sensor is electrically connected with the auxiliary heating assembly, the auxiliary heating assembly is electrically connected with a controller, the temperature-sensitive sensor is electrically connected with the controller, and the controller controls the auxiliary heating assembly to be opened or closed.

Has the advantages that: through the heat transfer, the temperature of the high temperature work piece in the heat absorption subassembly can reduce gradually to lead to heat transfer medium's temperature to reduce, heat transfer medium's temperature is difficult to make stirling motor work. When the temperature-sensitive sensor detects that the temperature is reduced to be lower than the working temperature of the Stirling motor, the temperature-sensitive sensor sends a working signal to the auxiliary heating assembly, and the auxiliary heating assembly heats the heat exchange medium, so that the temperature of the heat exchange medium is increased to be the working temperature of the Stirling motor.

Furthermore, the heat absorption component comprises an outer cylinder and an inner cylinder arranged in the outer cylinder, and a channel for heat supply exchange medium to flow is arranged between the inner cylinder and the outer cylinder.

Has the advantages that: through the arrangement of the double-layer cylinder, the heat exchange medium can flow in the cavity, and the heat exchange medium is close to a high-temperature workpiece needing heat exchange, so that the heat exchange efficiency is improved.

Further, the pump assembly comprises a mechanical pump, and a heating assembly is arranged on the mechanical pump.

Has the advantages that: when the temperature of the heat exchange medium is too low, the heat exchange medium is inconvenient to flow. The temperature of the heat exchange medium is increased through the heating assembly, so that the heat exchange medium is convenient to circulate in the waste heat utilization system.

Furthermore, a top cover for covering the heat absorption cylinder is arranged at the top of the heat absorption assembly, an inverted cone-shaped bulge is arranged at the center of the bottom of the top cover, and a cavity is formed in the top cover.

Has the advantages that: because the hot gas flow is along the in-process that the arch periphery flows, partial heat exchanges with the outside air through the top cap, consequently the setting of heat conduction unit can improve the speed that the hot gas flow flows to the section of thick bamboo wall flow of inner tube, and then improves waste heat recovery's effect.

Further, the bottom of top cap still is equipped with the heat conduction unit of a plurality of equipartitions along the arch, the heat conduction unit leads the heat of lid bottom to in the passageway.

Has the advantages that: because the hot gas flow is along the in-process that the arch periphery flows, partial heat exchanges with the outside air through the top cap, consequently the setting of heat conduction unit can improve the speed that the hot gas flow flows to the interior wall flow of inner tube, and then improves waste heat recovery's effect.

Further, the heat conduction unit includes the heat-conducting plate and drives the heat-conducting plate around the reciprocating swing's of horizontal axis actuating mechanism, the heat-conducting plate is located between arch and the inner tube, be fixed with a plurality of gasbags between heat-conducting plate and the arch, be equipped with the check valve that admits air on the gasbag, be equipped with the exhaust hole of intercommunication gasbag on the heat-conducting plate, be equipped with the check valve of giving vent to anger in the exhaust hole.

Has the advantages that: the heat-conducting plate is at reciprocal wobbling in-process for the continuous inflation of gasbag is with dwindling, and when the gasbag volume reduced, its inside atmospheric pressure increased, the check valve that gives vent to anger opened, and the inside steam of gasbag is discharged through the exhaust hole, therefore the gasbag combustion gas stream can lead to the fact the effect of buffering to the hot gas stream that is close to the top cap, slows down the speed that the hot gas stream rises, reduces the hot gas stream and flows through the probability of top cap with external heat transfer, thereby improves the recovery effect of waste heat.

Further, the vent hole is obliquely arranged, and an outlet at one side far away from the air bag faces downwards.

Has the advantages that: therefore, the airflow discharged by the air bag faces downwards, and the downward impact force is given to the hot air flow close to the top cover, so that the buffer force generated by the hot air flow is improved, and the rising rate of the hot air flow is further slowed down.

Furthermore, a plurality of metal supporting tubes communicated with the heat absorbing tubes are distributed at the bottom of the heat absorbing tube in a staggered manner.

Has the advantages that: due to the arrangement of the supporting pipe, the high-temperature workpiece is directly placed on the supporting pipe, the heat exchange medium in the supporting pipe can directly recover waste heat of the high-temperature workpiece, and the cooling rate of the high-temperature workpiece is improved.

Furthermore, a material receiving plate which is connected with the rack in a horizontal sliding mode is arranged below the supporting tube.

Has the advantages that: when the high-temperature workpiece is placed on the supporting pipe, a small amount of collision is generated between the high-temperature workpiece and the supporting pipe, a certain amount of broken carbon residues and the like are attached to certain workpieces such as electrolytic aluminum blanks, and when the high-temperature workpiece is placed on the supporting pipe, the broken carbon residues on the workpieces fall off due to collision vibration, and the broken carbon residues can be collected by the aid of the material receiving plate.

Drawings

Fig. 1 is an axial view of a waste heat utilization system according to a first embodiment of the present invention;

fig. 2 is a perspective view of a first, second and third heat absorbing assemblies according to an embodiment of the present invention;

fig. 3 is a schematic view of a cut-away view of a forward portion of a second embodiment of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a sectional view of the top cover in the second embodiment;

FIG. 6 is a schematic view of a top cover in a partial cross-section according to the third embodiment.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the heat pump comprises a mechanical pump 1, a heat absorption assembly 2, an electromagnetic pump 3, a heater 4, a Stirling motor 5, a heat exchanger 6, a liquid storage tank 7, an inner cylinder 101, an outer cylinder 102, a groove 103, a heat dissipation hole 104, a heat absorption pipe 105, a mounting hole 106, a hoop 107, a mounting lug 108, a support pipe 109, a material receiving plate 110, a top cover 200, a protrusion 201, a cavity 202, a cover plate 203, a heat conduction plate 300, a speed reduction motor 301, a guide rod 302, a bearing seat 303, an incomplete gear 304, an end face gear 305, an air bag 306, an exhaust hole 307 and an air outlet.

The first embodiment is as follows:

the utility model provides a waste heat utilization system, as shown in figure 1 and figure 2, including being used for driving the circulating pump package spare of heat exchange medium, the pump package spare includes mechanical pump 1 and electromagnetic pump 3 in this embodiment, and the inlet and the liquid outlet of mechanical pump 1 all are provided with heating element, and heating element is the glow stick, and the model of glow stick is: DN40, the electric heating rod is electrically connected with a power supply.

The heat absorption device comprises an outer cylinder 102 and an inner cylinder 101 arranged in the outer cylinder 102, a heat supply exchange medium flowing channel is specifically arranged between the inner cylinder 101 and the outer cylinder 102, a mechanical pump 1 is communicated with the channel, and an electromagnetic pump 3 is communicated with the channel.

The liquid storage component is a liquid storage tank 7, and the liquid storage tank 7 is communicated with the mechanical pump 1. The Stirling motor 5 and the heat exchanger 6, specific heat exchanger 6 communicates with liquid reserve tank 7, Stirling motor 5 respectively. The Stirling motor 5 and the electromagnetic pump 3 are communicated with each other to form an auxiliary heating assembly, the auxiliary heating assembly comprises a heating container and a heater 4 fixed on the heating container, and the type of the heater 4 is as follows: DN125X800, concretely, a liquid storage container is fixed on the Stirling motor 5, the heat absorption end of the Stirling motor in the embodiment is a heat absorption sheet, the heat absorption sheet of the Stirling motor extends into the liquid storage container, and the liquid storage container is respectively communicated with the heat exchanger 6 and the heating container. Be provided with temperature sensitive sensor between heater 4 and electromagnetic pump 3, the model is: SIN-WZP-PT100, the temperature sensitive sensor is electrically connected with a controller arranged on the heater 4, and the controller is of the type: 900U, the controller is electrically connected with the heater 4, the controller controls the on-off of the heater 4, and the temperature-sensitive sensor is positioned at the liquid outlet of the electromagnetic pump 3. The communication in this embodiment is implemented by using the existing pipelines, and is not described herein again.

The specific implementation process is as follows:

the heat exchange medium in this example is a liquid metal, which is an alloy consisting of, by mass, 20% of gallium, 30% of indium, 19% of bismuth, 5% of aluminum, 3% of iron, 5% of magnesium, and 18% of tin, and the melting point of the liquid metal is 40 ℃.

Initially, the liquid metal is easily solidified at normal temperature, so the electric heat pump is started to heat the liquid metal, and the mechanical pump 1 is started to drive the liquid metal. In the embodiment, the electrolytic aluminum stub is taken as an example, the bus bar of the electrolytic aluminum stub is placed in the inner cylinder 101, and the heat absorbing component 2 of the scheme is cylindrical and can accommodate high-temperature workpieces with special-shaped structures such as the electrolytic aluminum stub.

Taking the electrolytic aluminum residual anode as an example, after the electrolytic aluminum residual anode is put in, the electromagnetic pump 3 is started. The mechanical pump 1 sends liquid metal into the channel, then the electromagnetic pump 3 sends the heat-absorbing high-temperature liquid metal into the heating container, then enters the liquid storage container, passes through the heat exchanger 6, enters the liquid storage tank 7, and then is sent into the channel through the mechanical pump 1, so that the circulation of the liquid metal is completed.

Specifically, the method comprises the following steps: the liquid metal in the passageway carries out the heat exchange to the electrolytic aluminum residual anode, and the liquid metal of high temperature carries out the heat exchange with the heating plate in stock solution container, thereby stirling generator absorbs a large amount of heat work electricity generation, and stirling generator's operating temperature is at 400 ℃ in this embodiment. After the Stirling generator consumes the heat energy, the heat exchanger 6 utilizes the residual heat energy of the liquid metal, such as: heating water, generating water vapor, etc.

After long-time heat exchange, the temperature of the electrolytic aluminum stub is gradually reduced, so that the temperature of the liquid metal is also gradually reduced, and the temperature of the liquid metal is insufficient to enable the Stirling motor 5 to work. At this time, the temperature sensitive sensor detects the temperature of the liquid metal, for example: and the temperature sensor sends a temperature signal to the controller, the controller controls the heater 4 to work, and the heater 4 heats the liquid metal in the heating container, so that the temperature of the liquid metal is increased, and the Stirling generator continuously works. When the operator finds that the heater 4 is operating, the electrolytic aluminum anode scrap in the inner tube 101 is replaced.

Example two:

the difference between the second embodiment and the first embodiment is that, as shown in fig. 2, fig. 3, fig. 4 and fig. 5, the heat absorbing assembly 2 is disposed on the rack, a spiral groove 103 is disposed on the outer wall of the inner cylinder 101, and the cross section of the groove 103 is semicircular, as shown in fig. 3, a plurality of heat dissipating holes 104 are disposed on the inner wall of the inner cylinder 101, the heat dissipating holes 104 are through holes, a heat absorbing pipe 105 for circulating a heat exchange medium is clamped tightly in the groove 103, the heat absorbing pipe 105 is disposed in the channel, and mounting holes 106 for passing the heat absorbing pipe 105 are disposed on the upper portion and the lower portion of the outer cylinder 102.

Be equipped with the locking mechanism of a plurality of fixed heat absorption pipes 105 on inner tube 101 outer wall, wherein locking mechanism is including being semi-annular staple bolt 107 and bolt, the outside (towards the protruding one side of staple bolt 107) bending type in both ends of staple bolt 107 becomes installation ear 108, locating hole I has been seted up on installation ear 108, be equipped with a set of screw hole I that corresponds with the locating hole position on inner tube 101 outer wall, two screw hole I in a set of screw hole I are located both sides about recess 103 respectively, pack the bolt into in locating hole I and screw hole I, thereby the realization is fixed the staple bolt 107 in heat absorption pipe 105's outside.

A plurality of supporting tubes 109 communicated with the heat absorbing tubes 105 are distributed at the bottom of the heat absorbing component 2 in a criss-cross manner, the supporting tubes 109 can be fixed on the rack and also can be fixed below the heat absorbing component 2 in other manners, the supporting tubes 109 are hard tubes made of stainless steel, a material receiving plate 110 which is horizontally connected with the rack in a sliding manner is further arranged below the supporting tubes 109, and the material receiving plate 110 is used for collecting impurities falling from a workpiece to be heat absorbed.

Be equipped with the top cap 200 that covers at the top of heat absorption subassembly 2 and close heat absorption subassembly 2, top cap 200 is circular in this embodiment, as shown in fig. 4, be equipped with the arch 201 that is the back taper in the center department of top cap 200 bottom, be equipped with the open cavity in top 202 in top cap 200, cavity 202 is the back taper equally, can dismantle on the top cap 200 to be connected with the apron 203 with cavity 202 confined, specifically set up to: a positioning hole II is formed in the cover plate 203, a threaded hole II corresponding to the positioning hole II is formed in the top cover 200, bolts are installed in the positioning hole II and the threaded hole II to achieve installation of the cover plate 203 on the top cover 200, when the heat insulation cover is used, a heat insulation material is filled in the cavity 202, and in the embodiment, the heat insulation material is glass wool; a lifting lug convenient for lifting the crane is further arranged on the top cover 200.

The specific implementation process is as follows:

in the embodiment, taking an electrolytic aluminum residual anode as an example, the electrolytic aluminum residual anode to be cooled is placed on the supporting tube 109 by using a travelling crane (or other modes) in a workshop, then the top cover 200 is covered on the top of the heat absorption component 2 through the lifting lug, when a workpiece is placed in the electrolytic aluminum residual anode, the workpiece slightly collides with the supporting tube 109, so that residual slag on the workpiece falls on the material receiving plate 110 through a gap between the supporting tubes 109, the high-temperature workpiece heats air around the high-temperature workpiece, and the hot air flow continuously flows upwards due to the rising characteristic of the hot air flow.

When the hot air flow rises to the vicinity of the top cover 200, the protrusion 201 is in an inverted cone shape, so that the hot air flow flows along the outer periphery of the protrusion 201 to the side close to the inner cylinder 101, the hot air flows through the heat dissipation holes 104 to enter the groove 103, and the heat of the hot air is taken away by the liquid metal in the heat absorption pipe 105.

Example three:

the third embodiment is different from the second embodiment in that, as shown in fig. 6, a plurality of heat conducting units are uniformly distributed at the bottom of the top cover 200 along the circumference of the protrusion 201, the heat conducting units are used for dispersing heat at the bottom of the top cover 200 to the heat absorbing pipe 105, wherein each heat conducting unit comprises a heat conducting plate 300 and a driving mechanism for driving the heat conducting plate 300 to swing back and forth around a horizontal axis, the heat conducting plate 300 is located between the protrusion 201 and the inner cylinder 101, the driving mechanism in this embodiment comprises a speed reducing motor 301 and a guide rod 302, the speed reducing motor 301 is fixed at the top of the top cover 200, the top cover 200 is provided with a shaft hole for an output shaft of the speed reducing motor 301 to pass through, an incomplete gear 304 located below the top cover 200 is coaxially fixed on a driving shaft of the: a bearing seat 303 is fixed at the bottom of the top cover 200, the guide rod 302 is connected with the bearing seat 303 through a bearing, an end face gear 305 engaged with the incomplete gear 304 is coaxially fixed at the end of the guide rod 302, in the embodiment, the end face gear 305 and the incomplete gear 304 have straight teeth, the guide rod 302 is provided with a torsion spring fixed at the bottom of the top cover 200, and the heat conducting plate 300 is fixed on the guide rod 302.

When the incomplete gear 304 and the face gear 305 are in an unmeshed state, the lower end of the heat conducting plate 300 inclines towards one side of the protrusion 201, during operation, the reduction motor 301 drives the incomplete gear 304 to rotate at a slow speed, when the incomplete gear 304 is meshed with the face gear 305, the guide rod 302 rotates, so that the heat conducting plate 300 swings towards one side far away from the protrusion 201, meanwhile, the torsion spring stores energy, when the incomplete gear 304 is disengaged from the face gear 305, the torsion spring releases energy, so that the guide rod 302 rotates in a reverse direction rapidly, the heat conducting plate 300 resets rapidly, and therefore reciprocating swing of the heat conducting plate 300 is achieved.

A plurality of air bags 306 are fixed between the heat conducting plate 300 and the bulge 201, one side of each air bag 306 is bonded on the bulge 201, the other side of each air bag 306 is bonded on the heat conducting plate 300, gaps are reserved among the air bags 306, each air bag 306 is provided with an air inlet one-way valve, a plurality of vent holes 307 communicated with the inside of each air bag 306 are formed in the heat conducting plate 300, the vent holes 307 are obliquely arranged relative to the heat conducting plate 300, namely when the heat conducting plate 300 is close to the bulge 201, the central axis of each vent hole 307 is in a vertical state, an air outlet one-way valve 308 is arranged in each vent hole 307, when the volume of each air bag 306 is reduced, the air pressure in each air bag 306 is increased, the air outlet one-way valve 308 is opened, the air in each air bag 306 is exhausted, and when the volume of each air bag 306 is increased.

Because most of the heat of the hot air flow is absorbed by the heat exchange medium when the hot air flow rises to the vicinity of the top cover 200, the temperature is greatly reduced to about 100-.

The specific implementation process is as follows:

after the top cover 200 is covered on the heat absorbing component 2, the power supply connected with the speed reducing motor 301 is started, so that the heat conducting plate 300 in the heat absorbing component 2 swings back and forth, when hot air flow rises to be close to the top cover 200, the hot air flows to the periphery of the protrusion 201 due to the blocking of the protrusion 201, the air bag 306 between the protrusion 201 and the heat conducting plate 300 exists, the air bag 306 has a certain blocking effect on the hot air flow, so that the hot air flows to the heat conducting plate 300, when the heat conducting plate 300 swings away from one side of the protrusion 201, the thrust force for the hot air to flow to the side wall of the inner cylinder 101 is given, the hot air flow is enabled to quickly exchange heat with the heat exchange medium in the heat absorbing.

When the heat conducting plate 300 swings to the side far away from the protrusion 201, the air bag 306 stretches the inner volume to increase, the inner air pressure is reduced, the air inlet check valve is opened, the external hot air flows into the air bag 306, when the heat conducting plate 300 swings to the side near the protrusion 201, the air bag 306 is extruded, the volume of the air bag 306 is reduced, the inner air pressure is increased, the air outlet check valve 308 is opened, the hot air in the air bag 306 is discharged through the air outlet 307, and the outlet of the air outlet 307 inclines downwards, so that the hot air flow discharged by the air bag 306 provides downward acting force for the hot air flow close to the top cover 200, the rising speed of the hot air flow is reduced, the probability of heat exchange between the hot air flow.

In addition, since the heat conduction plate 300 is reset by the energy released by the torsion spring, the resetting speed of the heat conduction plate 300 is high, the flow rate of the gas discharged through the exhaust hole 307 is high, and the acting force on the gas flow below the gas flow is also increased.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The technology, shape and construction parts which are not described in the present invention are all known technology.

Claims

1. A waste heat utilization system is characterized in that: the heat absorption assembly comprises a cavity for placing a high-temperature workpiece and a channel for circulating a heat supply exchange medium, and the heat absorption end of the Stirling generator is provided with a liquid storage container for flowing the heat supply exchange medium.

2. The waste heat utilization system according to claim 1, characterized in that: the Stirling motor is connected with the heat absorption assembly through the auxiliary heat assembly, the temperature-sensitive sensor is arranged between the auxiliary heat assembly and the heat absorption assembly and electrically connected with the auxiliary heat assembly, the auxiliary heat assembly is electrically connected with the controller, the temperature-sensitive sensor is electrically connected with the controller, and the controller controls the auxiliary heat assembly to be opened or closed.

3. The waste heat utilization system according to claim 2, characterized in that: the heat absorption component comprises an outer barrel and an inner barrel arranged in the outer barrel, and a heat supply exchange medium flowing channel is arranged between the inner barrel and the outer barrel.

4. The waste heat utilization system according to any one of claims 1 to 3, characterized in that: the pump assembly comprises a mechanical pump, and a heating assembly is arranged on the mechanical pump.

5. The waste heat utilization system according to claim 4, characterized in that: the top of the heat absorption component is provided with a top cover which covers the heat absorption cylinder, the center of the bottom of the top cover is provided with an inverted cone-shaped bulge, and a cavity is arranged in the top cover.

6. The waste heat utilization system according to claim 5, characterized in that: the bottom of top cap still is equipped with the heat conduction unit of a plurality of equipartitions along the arch, the heat conduction unit leads the heat of lid bottom to in the passageway.

7. The waste heat utilization system according to claim 6, characterized in that: the heat conduction unit includes heat-conducting plate and the actuating mechanism that drives the heat-conducting plate and reciprocate around horizontal axis, the heat-conducting plate is located between arch and the inner tube, be fixed with a plurality of gasbags between heat-conducting plate and the arch, be equipped with the check valve that admits air on the gasbag, be equipped with the exhaust hole of intercommunication gasbag on the heat-conducting plate, be equipped with the check valve of giving vent to anger in the exhaust hole.

8. The waste heat utilization system according to claim 7, characterized in that: the vent hole is obliquely arranged, and an outlet at one side far away from the air bag faces downwards.

9. The waste heat utilization system according to claim 8, characterized in that: and a plurality of metal supporting tubes communicated with the heat absorbing tubes are distributed at the bottom of the heat absorbing tube in a staggered manner.

10. The waste heat utilization system according to claim 9, characterized in that: and a material receiving plate connected with the frame in a horizontal sliding manner is arranged below the supporting tube.