CN214842556U - Reciprocating movable efficient energy-saving tunnel kiln - Google Patents

Abstract

The utility model discloses a come and go portable high-efficient energy-conserving tunnel cave, the induction cooker comprises a cooker bod, track and waste heat recovery device, the both sides of furnace body are all installed on the track through a plurality of kiln wheels, be provided with the oxygen supply pipeline between the track of both sides, exhaust stack is installed at the top of furnace body, the rear chamber has been seted up for furnace's open-ended one end to the furnace body, waste heat recovery device is including setting up the heat accumulation unit in the rear chamber, the heat transfer unit of setting on furnace's inner wall, and be used for the adjustable heat-resisting mechanism that keeps apart heat transfer unit and furnace when heating furnace. The working state of the heat exchange unit in the hearth is controlled by the adjustable heat resisting mechanism, so that the heat exchange unit is prevented from absorbing heat when the hearth is heated, the hearth and heat treatment products are promoted to be cooled in a waste heat recycling mode after firing is finished, the energy is fully utilized, and the purposes of efficient production and energy consumption saving are achieved.

Description

Reciprocating movable efficient energy-saving tunnel kiln

Technical Field

The utility model relates to an energy-conserving tunnel cave technical field, concretely relates to reciprocating movable's energy-efficient tunnel cave.

Background

At present, the tunnel kiln for heat treatment of refractory products in China is produced by adopting an intermittent mode in the prior art, a row of kiln cars for heat-treated products in the kiln are pulled out at intervals of a certain time, then the kiln cars for loading the products which are not subjected to heat treatment are pushed in, the products are heated by using electric heating elements arranged beside two side walls in the kiln, and after the products are fired, the heat-treated products are cooled for a period of time and then the kiln cars are taken out.

Because of the intermittent production, the tunnel needs to be repeatedly heated and cooled, and before the kiln car is taken out, if the waste heat in the tunnel kiln is not recycled, the energy cost for using the tunnel kiln is greatly increased.

In the prior art, an energy-saving tunnel kiln with a waste heat recycling function generally directly arranges a component for absorbing waste heat in a hearth, which causes the problems of slow temperature rise, unstable temperature and increased energy consumption of the hearth, or arranges an independent cooling section to improve the defects, but causes the increase of the manufacturing cost and the occupied area of the energy-saving tunnel kiln.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a come and go portable high-efficient energy-conserving tunnel cave to solve the not good technical problem of result of use of the energy-conserving tunnel cave that has the waste heat recovery function among the prior art.

In order to solve the above technical problem, the utility model particularly provides the following technical scheme:

a reciprocating-moving type efficient energy-saving tunnel kiln comprises a furnace body with a hearth, rails and a waste heat recovery device arranged in the furnace body, wherein both sides of the furnace body are arranged on the rails through a plurality of kiln wheels and reciprocate along the rails, at least one oxygen supply pipeline for supplying oxygen to the hearth is arranged between the rails on both sides, and a waste gas discharge pipe communicated with the hearth is arranged at the top of the furnace body relative to the kiln wheels;

a rear cavity is formed in one end, opposite to the opening of the hearth, of the furnace body, and the waste heat recovery device comprises a heat storage unit arranged in the rear cavity, a heat exchange unit arranged on the inner wall of the hearth, and a flexible heat-blocking shutter which is driven to isolate the heat exchange unit from the hearth when the hearth is heated;

and a main air pipe with one end communicated with the hearth and the other end positioned in the rear cavity is arranged on the hearth wall of the hearth, an air blowing mechanism is arranged on the main air pipe, and air heated by the heat storage unit is conveyed into the hearth through the main air pipe under the pumping of the air blowing mechanism.

As an optimized scheme of the utility model, the confession has all been seted up on the inner wall of furnace's both sides the embedding square groove of heat transfer unit embedding, it accomodates the groove to have seted up in the furnace body, seted up the intercommunication on the cell wall of embedding square groove accomodate the interface channel in groove, interface channel is located both sides between the heat transfer unit, flexible heat-resisting flashboard is driven and is passed interface channel and embedding square groove with accomodate reciprocating motion between the groove, so that accomodate in the groove heat transfer unit with furnace keeps apart and expose in furnace.

As an optimized scheme of the utility model, the embedding square groove is located both sides accomodate between the groove, the embedding square groove is through being "n" shape connect the passageway with accomodate the groove intercommunication, flexible heat-resisting flashboard includes a plurality of swing joint's in proper order bar heat-resisting board, and is a plurality of the bar heat-resisting board is in when the embedding square groove is opened remove to the outside of embedding square groove, in order to strengthen the heat-proof quality of furnace body.

As a preferred scheme of the utility model, vertical grooves are formed on the groove walls at both ends of the embedded square groove, the flexible heat-resistant shutter further comprises a bar-shaped connecting plate connecting the adjacent bar-shaped heat-resistant plates, and the bar-shaped connecting plate and the end parts of the bar-shaped heat-resistant plates are both slidably mounted in the corresponding vertical grooves;

the both sides of bar connecting plate all are provided with and supply correspondingly the bar hinders the hot plate male seal groove between, both sides all seted up a plurality of spacing slide openings on the cell wall of inboard that the inter-plate seal groove is close to mutually, sliding plug installs in the spacing slide opening with corresponding bar hinders hot plate articulated flexible billet, flexible billet for the spacing lug in its lateral wall is installed to the one end of bar hinders hot plate, seted up the confession on the cell wall of inter-plate seal groove spacing lug slip embedding and both ends closed spacing groove.

As a preferred scheme of the utility model, a plurality of equidistant distribution's play tuber pipe is installed in the embedding on furnace's the thorax wall, the main tuber pipe is through a plurality of go out the tuber pipe with furnace intercommunication, and both sides heat transfer unit is about being a plurality of linear arrangement it is symmetrical to go out the tuber pipe.

As an optimal scheme of the utility model, the heat transfer unit includes hot-water line, cold water pipe, a plurality of long copper pipe and a plurality of curved copper pipe, and is a plurality of long copper pipe is through a plurality of curved copper union coupling forms the heat exchanger that the circuitous crooked just end to end of pipeline is linked together, the cold water pipe is located the below of hot-water line, the cold water pipe with the water inlet of heat exchanger is connected, the hot-water line with the outlet of heat exchanger is connected.

As a preferred scheme of the present invention, a single-tube hole for communicating the rear cavity with the embedded square groove and a double-tube hole for communicating the rear cavity with the furnace chamber are formed in the furnace body, the wall of each of the single-tube hole and the wall of the double-tube hole are both provided with a heat insulating layer, the cold water pipe is inserted into the single-tube hole, the hot water pipe is inserted into the double-tube hole, and the double-tube hole is provided with a heat exchange synergistic pipe;

one end of the heat exchange synergistic pipe penetrates into the hearth, the other end of the heat exchange synergistic pipe is connected with the main air pipe, and the main air pipe is connected with the air outlet pipes in a plurality relative to the heat exchange synergistic pipe and one end of the air inlet pipe.

As an optimized scheme of the utility model, the hot-water line with the cold water pipe with the equal downward sloping setting of one end that the heat exchanger is connected, it is adjacent the long copper pipe passes through bent copper union coupling forms the promotion flow portion that is "V" shape, every promotion flow portion be close to the equal tilt up setting of cold water pipe's cold junction is in order to do benefit to hot water upwards flow aslope.

As a preferred scheme of the utility model, the heat storage unit comprises a heat storage water tank, a heat exchange pipe and an air inlet pipe with one end connected with the heat exchange pipe, the cold water pipe and one end of the hot water pipe opposite to the heat exchanger are both arranged on the heat storage water tank, and the heat exchange pipe is spirally and is attached to the wall of the heat storage water tank;

the heat exchange efficiency-improving pipe is connected with the main air pipe through the heat exchange pipe, the heat exchange efficiency-improving pipe and the air inlet pipe are connected with the heat exchange pipe through an electric control valve, the air inlet pipe penetrates through the hearth relative to the air inlet end of the heat exchange pipe, and the other end of the heat exchange pipe, relative to the air inlet pipe and the heat exchange efficiency-improving pipe, is connected with the main air pipe.

As a preferred scheme of the utility model, both sides the embedding square groove is about the intake pipe reaches the heat transfer increases the pipe symmetry, the heat transfer increases the pipe and stretches into furnace's one end is located the intake pipe stretches into the top of furnace's one end.

Compared with the prior art, the utility model following beneficial effect has:

the utility model discloses an adjustable heat-resistant mechanism future control is located the operating condition of the heat transfer unit of furnace, realizes preventing the heat transfer unit endotherm when furnace heating, and promotes the cooling of furnace and thermal treatment goods through waste heat recovery recycle's mode after firing the end to and realize the make full use of the energy, thereby reach the purpose of high-efficient production and saving energy consumption.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a right side view of an embodiment of the present invention;

fig. 3 is a schematic structural view of a flexible heat-resistant shutter according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a strip-shaped connecting plate structure according to an embodiment of the present invention;

fig. 5 is a schematic view of a connection channel structure according to an embodiment of the present invention.

The reference numerals in the drawings denote the following, respectively:

1-furnace body; 2-a waste heat recovery device; 3-adjustable heat resistance mechanism; 4-main air pipe; 5-a blower mechanism; 6-embedding the square groove; 7-a storage groove; 8-connecting the channels; 17-oxygen supply line; 18-exhaust gas discharge pipe;

101-hearth; 102-a rear cavity;

201-a heat storage unit; 202-a heat exchange unit;

301-flexible thermal shutter; 302-a reciprocating drive assembly;

601-vertical groove;

3011-a strip-shaped heat-resistant plate; 3012-a strip-shaped connection plate; 3013-seal grooves between plates; 3014-limiting slide holes; 3015-a flexible steel strip; 3016-a limit bump; 3017-a limit groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 5, the utility model provides a reciprocating moving type high-efficiency energy-saving tunnel kiln, which comprises a kiln body 1 with a kiln chamber 101 and a waste heat recovery device 2 installed in the kiln body 1, wherein at least one oxygen supply pipeline 17 for supplying oxygen to the kiln chamber 101 is arranged in the kiln chamber 101, and a waste gas discharge pipe 18 communicated with the kiln chamber 101 is installed at the top of the kiln body 1 corresponding to the oxygen supply pipeline 17;

the two sides of the furnace body 1 are both arranged on rails 15 through a plurality of kiln wheels 16 and reciprocate along the rails 15, at least one oxygen supply pipeline 17 for supplying oxygen to the hearth 101 is arranged between the rails 15 at the two sides, and an exhaust gas discharge pipe 18 communicated with the hearth 101 is arranged at the top of the furnace body 1 relative to the kiln wheels 16.

The furnace body 1 is movably installed on the rails 15 at both sides through a plurality of kiln wheels 16 at both sides, when firing is carried out, a heat treatment product is placed between the rails 15 at both sides with a gap for exposing an oxygen supply pipeline 17, then the furnace body 1 is moved to enable the furnace body 1 to move along the rails until the stacked heat treatment product is positioned in the hearth 101, then the interior of the hearth 101 is heated through electric heating, natural gas combustion heating and the like to fire the heat treatment product, waste gas generated in the firing process is discharged through a waste gas discharge pipe 18, and the discharged waste gas is purified and discharged through a waste gas desulfurization purification device connected with the other end of the waste gas discharge pipe 18. Since the furnace body 1 is movable, one end of the exhaust gas discharge pipe 18 located outside the furnace 101 is connected to the exhaust gas desulfurization purification apparatus through a pipe that is slidably sealed therewith, or the exhaust gas discharge pipe 18 is made flexible and stretchable so that the exhaust gas discharge pipe 18 is kept connected to the exhaust gas desulfurization purification apparatus in accordance with the reciprocation of the furnace body 1.

On the contrary, after firing is finished, the waste heat in the hearth 101 is rapidly recovered through the waste heat recovery device 2 arranged on the furnace body 1 so as to achieve the purpose of rapidly cooling the heat treatment product in the hearth 101 at a proper cooling rate, then the fired heat treatment product in the furnace body 1 is taken out, and before next firing, the heat recovered by the waste heat recovery device 2 is utilized to preheat the hearth 101 and the heat treatment product to be fired so as to achieve the purposes of improving the production efficiency and saving the energy consumption.

The furnace body 1 is provided with a rear cavity 102 in one end opposite to the opening of the furnace 101, and the waste heat recovery device 2 comprises a heat storage unit 201 arranged in the rear cavity 102, a heat exchange unit 202 arranged on the inner wall of the furnace 101, and an adjustable heat resistance mechanism 3 used for isolating the heat exchange unit 202 from the furnace 101 when the furnace 101 is heated.

A main air pipe 4 with one end communicated with the hearth 101 and the other end positioned in the rear cavity 102 is installed on the hearth wall of the hearth 101, an air blowing mechanism 5 is installed on the main air pipe 4, and air heated by the heat storage unit 201 is conveyed into the hearth 101 through the main air pipe 4 under the pumping of the air blowing mechanism 5.

The adjustable heat resistance mechanism 3 isolates the heat exchange unit 202 embedded in the hearth wall of the hearth 101 from the hearth 101 in the heating and firing stages of the hearth 101, so that the defects of slow heating and unstable temperature of the hearth 101 caused by the heat absorption of the heat exchange unit 202 when the hearth 101 is heated are avoided. And after firing, the adjustable heat-resisting mechanism 3 exposes the heat exchange unit 202 embedded in the wall of the hearth 101, the heat exchange unit 202 absorbs heat in the hearth 101 and conducts the absorbed heat to the heat storage unit 201 in the independently arranged preheating collection cavity, on one hand, the cooling of heat treatment products in the hearth 101 is accelerated, which is beneficial to improving production efficiency, on the other hand, the heat storage unit 201 heats air through the absorbed heat, and when next firing is carried out, hot air in the rear cavity 102 enters the hearth 101 through the pumping of the air blowing mechanism 5 and the conveying of the main air pipe 4, so that the heat treatment products in the hearth 101 and the hearth 101 are subjected to initial heating or preheating by utilizing waste heat, and the purpose of saving energy is achieved.

In the prior art, an energy-saving tunnel kiln with a waste heat recycling function generally directly arranges a component for absorbing waste heat in a hearth 101, which causes the problems of slow temperature rise, unstable temperature and increased energy consumption of the hearth 101, or arranges an independent cooling section to improve the disadvantages, but causes the increase of the manufacturing cost and the occupied area of the energy-saving tunnel kiln.

And the utility model discloses an adjustable heat-resistant mechanism 3 controls the operating condition who is located the heat transfer unit 202 of furnace 101 in the future, realizes preventing heat transfer unit 202 to absorb heat when furnace 101 heats, and promotes the cooling of furnace 101 and heat treatment goods through waste heat recovery recycle's mode after firing the end to and realize the make full use of the energy, thereby reach the purpose of high-efficient production and energy saving.

Wherein, all set up the embedding square trough 6 that supplies heat transfer unit 202 embedding on the inner wall of furnace 101's both sides, adjustable heat-resisting mechanism 3 includes that the flexibility hinders hot flashboard 301 and is used for driving the reciprocal drive assembly 302 that the flexibility hinders hot flashboard 301 hinders, it accomodates groove 7 to have seted up the intercommunication on the cell wall of embedding square trough 6 and accomodate the linking channel 8 of groove 7, linking channel 8 is located between both sides heat transfer unit 202, the flexible heat-resisting flashboard 301 passes linking channel 8 and at embedding square trough 6 and accomodate reciprocating motion between groove 7 under the drive of reciprocal drive assembly 302, so that accomodate heat transfer unit 202 in the groove 7 and keep apart with furnace 101 and expose out in furnace 101.

The connecting channel 8 is arranged on the wall of the top of the embedded square groove 6, namely the flexible heat-resistant shutter 301 is driven by the reciprocating driving component 302 to open and close the embedded square groove 6 in a lifting mode, specifically, when the hearth 101 is heated and fired, the reciprocating driving component 302 drives the strip-shaped heat-resistant plate 3011 to descend in the embedded square groove 6 through the accommodating groove 7 and through the connecting channel 8 until the embedded square groove 6 is closed, so that the heat exchange unit 202 embedded in the square groove 6 is isolated from the hearth 101, and the purpose of preventing the heat exchange unit 202 from absorbing heat in the heating and firing stages of the hearth 101 is achieved. And when firing is finished, the reverse is made.

Note that, in general, the flexible heat shutter 301, the furnace body 1, and the embedded square groove 6 are insulated by providing an asbestos plate, for example, and the flexible heat shutter 301 is preferably made of a plate material having poor thermal conductivity, such as a foamed ceramic plate. The reciprocating driving assembly 302 is a hydraulic oil cylinder, an air cylinder or other mechanical structures with reciprocating driving functions, and the structure of the reciprocating driving assembly 302 is designed according to the structure of the heat insulation partition plate, the opening and closing mode of the embedded square groove 6 and other factors.

It is further optimized in the above embodiment that the embedding square groove 6 is located between the two side accommodating grooves 7, the embedding square groove 6 is communicated with the accommodating grooves 7 through the connecting channel 8 in the shape of "n", the flexible heat-blocking shutter 301 comprises a plurality of strip-shaped heat-blocking plates 3011 which are movably connected in sequence, and the plurality of strip-shaped heat-blocking plates 3011 move to the outer side of the embedding square groove 6 when the embedding square groove 6 is opened, so as to enhance the heat-insulating performance of the furnace body 1.

A plurality of bar heat-resisting board 3011 swing joint is in order to satisfy the requirement of the bending by a wide margin of flexible heat-resisting flashboard 301, and will accomodate groove 7 and set up in the outside of embedding square groove 6, not only be favorable to the thermal-insulated heat preservation of furnace body 1 when flexible heat-resisting flashboard 301 will embed square groove 6 and seal, and when flexible heat-resisting flashboard 301 was taken in and accomodates groove 7, the thermal-insulated heat preservation performance of furnace body 1 has further been strengthened through flexible heat-resisting flashboard 301, thereby further reduce the heat of furnace 101 heating and waste heat recovery stage furnace 101 and outwards distribute through furnace body 1, not only be favorable to practicing thrift the energy consumption, and avoided leading to furnace body 1 to set up the other bellying portion that has and accomodate groove 7 because of accomodating of baffle bar heat-resisting board 3011, avoid the increase of furnace body 1 surface area and increase radiating when, be favorable to the pleasing to the eye of furnace body 1.

Further optimization on the above embodiment is that, vertical groove 601 has all been seted up on the cell wall at the both ends of embedding square groove 6, flexible heat-resisting flashboard 301 is still including the bar connecting plate 3012 of connecting adjacent bar heat-resisting board 3011, the equal slidable mounting in corresponding vertical groove 601 of tip of bar connecting plate 3012 and bar heat-resisting board 3011, come flexible heat-resisting flashboard 301 whole to lead through vertical groove 601, prevent that flexible heat-resisting flashboard 301 from because of bar heat-resisting board 3011 and bar connecting plate 3012 dislocation each other and influencing the closed effect to embedding square groove 6.

And, the both sides of bar connecting plate 3012 all are provided with and supply corresponding bar heat-resistant board 3011 male seal groove 3013 between the board, all seted up a plurality of spacing slide openings 3014 on the inboard cell wall that seal groove 3013 is close to mutually between the board of both sides, sliding plug in installs flexible billet 3015 articulated with corresponding bar heat-resistant board 3011 in spacing slide opening 3014, flexible billet 3015 installs the spacing lug 3016 of outstanding its lateral wall for the one end of bar heat-resistant board 3011, set up on the cell wall of seal groove 3013 between the board and supply spacing lug 3016 slip embedding and both ends closed spacing groove 3017.

The inter-plate sealing groove 3013 is used for inserting the strip heat-resistant plates 3011 when the plurality of strip heat-resistant plates 3011 are stacked, that is, when part of the strip heat-resistant plates 3011 are stored in the storage groove 7 and the embedded square groove 6 is sealed, the strip heat-resistant plates 3011 are inserted into the inter-plate sealing grooves 3013 at the top and bottom of the strip connecting plates 3012, when the height of the flexible heat-resistant shutter 301 is reduced, the flexible heat-resistant shutter 301 forms a whole with two sides isolated from each other by matching with the strip connecting plates 3012 when the embedded square groove 6 is sealed by the plurality of strip heat-resistant plates 3011, so that hot air in the furnace 101 is prevented from permeating into the embedded square groove 6 through a gap at the connection position of the strip heat-resistant plates 3011 and the strip connecting plates 3012, and the heat-resistant effect of the flexible heat-resistant shutter 301 is improved. When the accommodating grooves 7 or the plurality of strip-shaped heat blocking plates 3011 embedded in the square grooves 6 are driven to rise and pass through the bent connecting passages 8, the upper strip-shaped heat blocking plate 3011 and the strip-shaped heat blocking plates 3011 are hinged by a structure such as a hinge, and the bendable flexible steel strip 3015 slides upward relative to the lower unsupported strip-shaped connecting plate 3012, so that the strip-shaped heat blocking plates 3011 are separated from the inter-plate sealing grooves 3013 of the strip-shaped connecting plates 3012, and the bendable flexible steel strip 3015 and the hinged connection of the strip-shaped heat blocking plates 3011 and the flexible steel strip 3015 are combined to realize the large-amplitude bending of the whole flexible heat blocking shutter 301, so as to satisfy the requirement that the flexible heat blocking shutter 301 reciprocates between the accommodating grooves 7 and the embedded square grooves 6 which are parallel or nearly parallel to each other, and have good heat-insulating performance.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims (5)

1. The reciprocating type efficient energy-saving tunnel kiln is characterized by comprising a kiln body (1) with a hearth (101), rails (15) and a waste heat recovery device (2) arranged in the kiln body (1), wherein two sides of the kiln body (1) are arranged on the rails (15) through a plurality of kiln wheels (16) and reciprocate along the rails (15), at least one oxygen supply pipeline (17) for supplying oxygen to the hearth (101) is arranged between the rails (15) at two sides, and a waste gas discharge pipe (18) communicated with the hearth (101) is arranged at the top of the kiln body (1) relative to the kiln wheels (16);

a rear cavity (102) is formed in one end, opposite to an opening of the hearth (101), of the furnace body (1), the waste heat recovery device (2) comprises a heat storage unit (201) arranged in the rear cavity (102), a heat exchange unit (202) arranged on the inner wall of the hearth (101), and a flexible heat-resistant shutter (301) which is driven to isolate the heat exchange unit (202) from the hearth (101) when the hearth (101) is heated;

the air-conditioning system is characterized in that a main air pipe (4) with one end communicated with the hearth (101) and the other end positioned in the rear cavity (102) is arranged on the wall of the hearth (101), an air blowing mechanism (5) is arranged on the main air pipe (4), and air heated by the heat storage unit (201) is pumped by the air blowing mechanism (5) to be conveyed into the hearth (101) through the main air pipe (4).

2. The reciprocating high-efficiency energy-saving tunnel kiln as recited in claim 1, wherein the inner walls of the two sides of the furnace (101) are provided with square embedding grooves (6) for the heat exchange units (202) to be embedded, the furnace body (1) is provided with a receiving groove (7), the wall of the square embedding groove (6) is provided with a connecting channel (8) communicated with the receiving groove (7), the connecting channel (8) is located between the heat exchange units (202) on the two sides, and the flexible heat-resistant shutter (301) is driven to pass through the connecting channel (8) and reciprocate between the square embedding groove (6) and the receiving groove (7) so as to isolate the heat exchange units (202) in the receiving groove (7) from the furnace (101) and expose the heat exchange units (202) in the furnace (101).

3. The reciprocating-type efficient energy-saving tunnel kiln according to claim 2, wherein the embedding square groove (6) is located between the accommodating grooves (7) at both sides, the embedding square groove (6) is communicated with the accommodating grooves (7) through the connecting channel (8) in an 'n' -shape, the flexible heat-resistant shutter (301) comprises a plurality of strip-shaped heat-resistant plates (3011) which are movably connected in sequence, and the plurality of strip-shaped heat-resistant plates (3011) move to the outer side of the embedding square groove (6) when the embedding square groove (6) is opened, so as to enhance the heat-insulating performance of the kiln body (1).

4. The reciprocating high-efficiency energy-saving tunnel kiln according to claim 3, wherein vertical grooves (601) are formed in the groove walls of the two ends of the embedded square groove (6), the flexible heat-resistant shutter (301) further comprises a strip-shaped connecting plate (3012) connecting the adjacent strip-shaped heat-resistant plates (3011), and the ends of the strip-shaped connecting plate (3012) and the strip-shaped heat-resistant plates (3011) are slidably mounted in the corresponding vertical grooves (601).

5. The reciprocating-moving type efficient energy-saving tunnel kiln according to claim 4, wherein the two sides of the bar-shaped connecting plate (3012) are respectively provided with an inter-plate sealing groove (3013) for inserting the corresponding bar-shaped heat-resistant plate (3011), the inner side wall of the inter-plate sealing groove (3013) at the two sides is provided with a plurality of limiting sliding holes (3014), the limiting sliding holes (3014) are internally provided with flexible steel bars (3015) hinged to the corresponding bar-shaped heat-resistant plate (3011) in a sliding and inserting manner, the flexible steel bars (3015) are provided with limiting lugs (3016) protruding from the side walls of the flexible steel bars (3011) relative to one ends of the bar-shaped heat-resistant plate (3011), and the wall of the inter-plate sealing groove (3013) is provided with limiting grooves (3017) for the limiting lugs (3016) to be slidably embedded and the two ends of which are closed.

Images