CN218380339U - Tunnel furnace equipment - Google Patents

Abstract

The utility model provides a tunnel furnace equipment, tunnel furnace equipment includes: a furnace chamber; the conveying chain assembly is arranged in the furnace chamber and comprises a conveying chain; the two opposite ends of the jig are respectively and rotationally connected with the conveying chains on the corresponding sides, so that the jig and the conveying chains synchronously run to convey the object; and the dust separation assembly is suitable for isolating the conveying chain assembly and the connecting part between the jig and the conveying chain from the furnace chamber. This tunnel furnace equipment keeps apart the junction between conveying chain subassembly and tool and the conveying chain through the dust proof subassembly, can reduce the dust that enters into the furnace chamber, has played the effect of effective dust proof.

Description

Tunnel furnace equipment

Technical Field

The utility model relates to a lithium battery technology field, concretely relates to tunnel furnace equipment.

Background

Currently, lithium ion batteries have been widely developed and applied with their unique performance advantages. In the production process of the lithium battery, the naked battery cell, the pole piece, the pole coil and the battery cell need to be preheated or dried.

The existing lithium battery preheating and baking are realized through the existing heating tunnel furnace, the lithium battery preheating tunnel furnace mainly comprises three types, namely a hot air circulating type tunnel furnace, a contact type tunnel furnace and an electromagnetic induction type tunnel furnace, wherein the hot air circulating type tunnel furnace is the most reliable in operation, and the lithium battery preheating tunnel furnace has the characteristics of capability of realizing full-automatic operation, land occupation space saving, low operation cost, high production efficiency, long service life and the like.

The hot air circulation type preheating tunnel furnace mostly uses a horizontal conveying plate chain as a transport carrier, the chain is fixed through a guide rail, and the space around the chain is narrow and small, so that dust cannot be effectively removed.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the transport mechanism that exists among the prior art and can not effectively carry out dirt-proof technical defect to a tunnel furnace equipment that can effectively dirt-proof is provided.

In order to solve the problems, the utility model provides a tunnel furnace device, which comprises a furnace chamber; the conveying chain assembly is arranged in the furnace chamber and comprises a conveying chain; the two opposite ends of the jig are respectively and rotatably connected with the conveying chains on the corresponding sides, so that the jig and the conveying chains synchronously run to convey objects; and the dust separation assembly is suitable for isolating the conveying chain assembly and the connection part between the jig and the conveying chain from the furnace chamber.

Optionally, the dust barrier assembly comprises: a dust shield having a closed chamber; the gap is arranged on the dust separation cover and communicated with the closed chamber; the conveying chain is located in the closed cavity, and the jig is rotatably connected with the conveying chain through a connecting part penetrating through the gap.

Optionally, the tunnel furnace apparatus further includes: and the negative pressure pumping device is suitable for forming negative pressure on the closed cavity of the dust separation cover.

Optionally, the furnace chamber has feed inlet and discharge gate, it has inlet scoop and air outlet to take out negative pressure device, it is located to take out negative pressure device the inlet scoop seal the cavity in order to induced draft, tunnel furnace equipment still includes: the air curtain device, the air curtain device is including going out the tuber pipe, go out the one end of tuber pipe with take out negative pressure equipment the air outlet is connected, the air-out pipe is followed the width setting of furnace chamber, the air-out pipe is equipped with a plurality of exhaust vents along the axial, with the feed inlet and/or the discharge gate forms the air curtain.

Optionally, the air outlet is arranged in a downward inclined mode.

Optionally, the tunnel furnace apparatus further comprises: and the filtering device is arranged at the air suction opening of the negative pressure pumping device.

Optionally, the tunnel furnace apparatus further comprises: and the dust collection box is arranged below the filtering device and is detachably connected with the shell of the negative pressure pumping device.

Optionally, to keeping away from take out negative pressure equipment the direction of air outlet, it is a plurality of the exhaust vent is evenly laid along the axial mutual interval in proper order, and is a plurality of the aperture of exhaust vent reduces gradually.

Optionally, the tunnel furnace apparatus further comprises a frame, the transmission mechanism comprising: the first chain wheel is rotationally connected to the top of the rack; the first chain wheel and the second chain wheel are arranged in a staggered mode from top to bottom so as to drive the conveying chain to fold back up and down to run and translate in the horizontal direction; wherein, the dust separation cover is suitable for shielding the first chain wheel, the second chain wheel and the area of the first chain wheel extending downwards to the second chain wheel and the area of the second chain wheel extending upwards to the first chain wheel.

Optionally, the dust excluding hood comprises: the top of the first partition plate is provided with a first cover cap, the bottom of the first partition plate is provided with a bottom plate, the bottom plate and the first cover cap are arranged in an up-down opposite mode, and the first chain wheel is positioned in the first cover cap; the bottom of the second partition plate is provided with a second cover cap, the top of the second partition plate is provided with a top plate, the top plate and the second cover cap are arranged in an up-and-down opposite mode, and the second chain wheel is located in the second cover cap; the first cover is connected with the top plate on the side, the second cover is connected with the bottom plate on the side, and the gaps are formed between the first partition plate and the second partition plate, between the first partition plate and the first cover, and between the second partition plate and the second cover.

Optionally, the first sprocket is disposed above a center line between two adjacent second sprockets.

Optionally, the furnace chamber has a feed inlet and a discharge outlet, and the tunnel furnace apparatus further includes: and the air curtain device is used for forming an air curtain at the feeding hole and/or the discharging hole.

The utility model has the advantages of it is following:

1. the dust-isolating cover forms a semi-closed cavity, so that the dust-isolating effect of the transmission mechanism is ensured, and negative pressure is favorably formed.

2. And a negative pressure adsorption mode is formed by adopting the induced draft fan, so that the dust removal efficiency is high.

3. The dust is purified at the air inlet of the draught fan, the hot air can be recycled, and the heat loss is reduced.

4. The purified hot air forms high-speed air curtains at the feed inlet and the discharge outlet of the preheating furnace through the air outlet pipe, so that the heat loss of the preheating furnace is further reduced.

5. The hot air blown out of the air outlet pipe further returns to the furnace cavity and is not discharged out of the furnace, the heat is recycled, and the heat loss is further reduced.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic front view of a tunnel furnace apparatus according to an embodiment;

FIG. 2 is a schematic perspective view of a tunnel kiln apparatus according to another embodiment;

FIG. 3 is a schematic front view showing the construction of a tunnel furnace apparatus in another embodiment;

FIG. 4 is a schematic side view of a tunnel furnace apparatus in another embodiment;

FIG. 5 is a schematic top view of a tunnel furnace apparatus according to another embodiment;

FIG. 6 is a schematic perspective view of a tunnel furnace apparatus in another embodiment;

FIG. 7 is an enlarged view of the structure at A in FIG. 6;

FIG. 8 is a schematic front view of an embodiment of a tunnel furnace apparatus with a shell portion removed;

fig. 9 is a schematic perspective view of a partial structure of a tunnel furnace apparatus in one embodiment.

Description of reference numerals:

100. tunnel furnace equipment; 101. a furnace chamber; 103. a feed inlet; 105. a discharge port; 110. a frame; 120. a conveyor chain assembly; 123. a transmission mechanism; 1231. a first sprocket; 1233. a second sprocket; 125. a conveyor chain; 127. a jig; 130. a negative pressure pumping device; 140. a dust-barrier component; 141. a dust shield; 1411. a first separator; 1412. a second separator; 1413. a first cover; 1414. a second cover; 1415. a base plate; 1416. a top plate; 143. a gap; 150. an air curtain; 151. an air outlet pipe; 1511. An air outlet; 160. a filtration device; 190. a dust collecting box; 170. a feeding module; 180. and a blanking module.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood 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.

The traditional preheating tunnel furnace is not provided with a heat insulation device at the entrance and exit, and cannot effectively prevent heat loss due to the fact that an infrared lamp radiation heat supplementing device is coupled.

Exemplary Tunnel furnace installation

Fig. 1 is a schematic structural view of a tunnel furnace apparatus in an embodiment in which the tunnel furnace apparatus 100 includes: the oven comprises an oven cavity 101, a conveyor chain assembly 120, a fixture 127 and a dust-isolating assembly 140, wherein the conveyor chain assembly 120 is arranged in the oven cavity 101, the conveyor chain assembly 120 comprises a conveyor chain 125, two opposite ends of the fixture 127 are respectively and rotatably connected with the conveyor chain 125 on the corresponding side, so that the fixture 127 and the conveyor chain 125 synchronously run to convey objects, and the dust-isolating assembly 140 is suitable for isolating the conveyor chain assembly 120 and the connection position between the fixture 127 and the conveyor chain 125 from the oven cavity 101.

The conveyor chain 125 and the jig 127 of the tunnel furnace equipment circularly run in the furnace along a serpentine track, wherein the serpentine track is a running track which is turned back up and down for many times and can form translation on a horizontal plane. The conveyor chain 125 and the jig 127 rotate relatively during operation, and thus dust is generated. In order to prevent the dust from floating on the electrical core of the fixture 127, the dust isolating assembly 140 is disposed between the fixture 127 and the conveying chain 125 as a physical barrier, so that the rotating connection between the fixture 127 and the conveying chain 125 is located in the dust isolating assembly 140, thereby preventing the dust generated by the fixture 127 during the rotation process from entering the furnace chamber 101.

Further, the dust separation assembly 140 includes: dust hood 141 and gap 143, dust hood 141 has the closed cavity, and gap 143 is located on dust hood 141, and gap 143 and closed cavity intercommunication, wherein, being located in the closed cavity of transfer chain 125, the tool is connected with the transfer chain rotation through the connecting portion that passes the gap.

The jig 127 is provided with a connecting part at an end part, the connecting part can be a pin shaft, the jig 127 is rotatably connected with the conveying chain 125 through the pin shaft, a gap 143 is reserved in the dust separation assembly 140 for the pin shaft to pass through the gap to be connected with the conveying chain 125, the conveying chain 125 is located in the closed cavity, the running track of the conveying chain 125 is located in the closed cavity, and the running track is opposite to the gap 143. So that the connection of the pin with the conveyor chain 125 is also located in the closed chamber, so that the dust formed during the rotation of the pin can largely remain in the closed chamber. The closed chamber of the dust-proof cover 141 may be formed by assembling a plate body with the housing of the rack 110, or may be a self-contained chamber itself, and then installed on the rack 110.

The jig 127 and the conveyor chain 125 run synchronously to convey the object, and taking a chain link on the conveyor chain 125 as an example, the chain link can run from bottom to top and from top to bottom, and the chain link is displaced and changed in the horizontal direction during the up-and-down turning operation, so that the conveyor chain 125 and the jig 127 can convey the object. When the moving track of the transmission chain 125 is turned back for a plurality of times up and down to form a snake shape, the space around the transmission chain 125 is large, the two opposite ends of the jig 127 are in one-to-one correspondence with the two transmission chains 125 at the two opposite sides and are respectively connected in a rotating manner, the two adjacent jigs 127 are arranged on the transmission chain 125 at intervals, and the jigs 127 are configured such that the working surfaces of the jigs 127 always face the same direction in the process of the turning back circulation operation.

Further, as shown in fig. 2 and 1, the tunnel furnace apparatus 100 further includes a frame 110, the transfer chain assembly 120 includes a driving mechanism 123, and the driving mechanism 123 includes: a first chain wheel 1231 and a second chain wheel 1233, wherein the first chain wheel 1231 is rotatably connected to the top of the frame 110; the second chain wheel 1233 is rotatably connected to the bottom of the frame 110, and the first chain wheel 1231 and the second chain wheel 1233 are disposed in a staggered manner up and down to drive the conveying chain 125 to move back and forth up and down and to translate in the horizontal direction, wherein the dust-proof cover 141 is adapted to cover the first chain wheel 1231 and the second chain wheel 1233, and the area where the first chain wheel 1231 extends down to the second chain wheel 1233 and the area where the second chain wheel 1233 extends up to the first chain wheel 1231.

The transmission chain 125 is in transmission connection with the corresponding transmission mechanism 123, and the transmission chain 125 runs along the gap 143 under the driving of the transmission mechanism 123. The first sprocket 1231 is disposed at the top of the frame 110, and the second sprocket 1233 is disposed at the bottom of the frame 110. The two opposite sides of the first chain wheel 1231 are respectively provided with a second chain wheel 1233, and the conveying chain 125 is in transmission connection with the first chain wheel 1231 and the second chain wheel 1233, so that the upper and lower multiple bending can be completed. The dust-proof cover 141 and the gap 143 are arranged in a manner corresponding to the arrangement of the transmission mechanism 123, so that a better dust-proof effect on the transmission mechanism 123 can be achieved.

Further, as shown in fig. 3, the dust-proof cover 141 includes: the first baffle 1411 and the second baffle 1412, a first cover 1413 is arranged on the top of the first baffle 1411, a bottom plate 1415 is arranged on the bottom of the first baffle 1411, the bottom plate 1415 and the first cover 1413 are arranged in an up-and-down opposite mode, the first sprocket 1231 is positioned in the first cover 1413, a second cover 1414 is arranged on the bottom of the second baffle 1412, a top plate 1416 is arranged on the top of the second baffle 1412, the top plate 1416 and the second cover 1414 are arranged in an up-and-down opposite mode, the second sprocket 123 is positioned in the second cover 1414, wherein the first cover 1413 is connected with the top plate 1416 on the side, the second cover 1414 is connected with the bottom plate 1415 on the side, and gaps 143 are formed between the first baffle 1 and the second baffle 1412, between the first baffle 1411 and the first cover 1413, and between the second baffle 1412 and the second cover 1414.

The first cover 1413 includes an arc plate and a side baffle, the arc plate of the first cover 1413 protrudes to the top, the top of the first partition 1411 has a certain distance from the top of the arc plate of the first cover 1413 to form a part of the gap 143, the arc plate of the first cover 1413 is connected to the top plates 1416 at both sides, and it can be known that the first cover 1413 and the top plates 1416 are alternately arranged along the horizontal feeding direction. Similarly, the second cover 1414 comprises an arc-shaped plate and side baffles, the arc-shaped plate of the second cover 1414 protrudes towards the bottom, the bottom of the second partition 1412 is spaced from the bottom of the arc-shaped plate of the second cover 1414 to form a part of the gap 143, the arc-shaped plate of the second cover 1414 is connected with the bottom plates 1415 on both sides, and the second cover 1414 and the bottom plates 1415 are arranged alternately in the horizontal feeding direction. A gap is formed between the first barrier 1411 and the second barrier 1412 on opposite sides to form a part of the gap 143.

Further, a first sprocket 1231 is provided above a center line between two adjacent second sprockets 1233.

The first chain wheel 1231 is disposed above the central line of the two second chain wheels 1233, so that the operation of the conveying chain 125 on the two opposite sides of the first chain wheel 1231 is more stable, and the function of balancing the conveying chain 125 is achieved.

Further, the furnace chamber 101 has an inlet port 103 and an outlet port 105, and the tunnel furnace apparatus 100 further includes: an air curtain device 150 for forming an air curtain at the inlet 103 and/or the outlet 105.

The above-described tunnel furnace apparatus 100 is provided with a heating assembly which preheats the furnace chamber 101. The air curtain device 150 can be disposed at the feeding port 103 and/or the discharging port 105, and the air curtain device 150 is disposed at the feeding port 103 and/or the discharging port 105, so that the feeding port 103 and the discharging port 105 can reduce heat loss generated during feeding and discharging.

Further, the tunnel furnace apparatus further comprises: the negative pressure pumping device 130 is used for forming negative pressure on the closed cavity of the dust separation cover 141 by the negative pressure pumping device 130.

The negative pressure pumping device 130 can prevent dust in the dust separation cover 141 from flowing out of the dust separation cover 141 from the gap 143 by pumping negative pressure to the closed cavity of the dust separation cover 141. As shown in fig. 4 and 5, the negative pressure pumping device 130 includes an air suction opening and an air outlet, the air suction opening faces the cavity of the dust-proof cover 141 and is adapted to form negative pressure to the cavity of the dust-proof cover 141.

The negative pressure pumping device 130 pumps air into the cavity of the dust-proof cover 141 through the air suction opening and flows out of the air outlet, so that the cavity of the dust-proof cover 141 forms negative pressure relative to the furnace chamber 101, and therefore, dust in the furnace chamber 101 can enter the dust-proof cover 141, so that the dust in the furnace chamber 101 is reduced, and the dust can be prevented from falling onto the jig 127.

The negative pressure pumping device 130 may be an induced draft fan, for example, a centrifugal induced draft fan. The draught fan can be installed on frame 110, make the draught fan can set up between dust hood 141 and frame 110, the draught fan is through carrying out the side convulsions in the dust hood, make the cavity of dust hood 141 can produce the negative pressure, therefore, ambient air can be taken out the inside of dust hood 141 by the draught fan through strip seam form opening, the dust that conveying chain 125 produced at the in-process of conveying object has also been taken the air intake department of draught fan by the air current simultaneously, make the dust can follow the inside that the air intake of draught fan got into the draught fan.

Further, the furnace chamber 101 has a feeding port 103 and a discharging port 105, the negative pressure pumping device 130 has an air suction port and an air outlet, the air suction port of the negative pressure pumping device 130 is located in the closed chamber to suck air, and the tunnel furnace apparatus further comprises: an air curtain device 150, the air curtain device 150 comprising: and the air outlet pipe 151, one end of the air outlet pipe 151 is connected with an air outlet of the negative pressure pumping device 130, the air outlet pipe 151 is arranged along the width of the furnace chamber 101, and the air outlet pipe 151 is provided with a plurality of air outlet holes 1511 along the axial direction so as to form an air curtain at the feeding hole 103 and/or the discharging hole 105.

The hot air enters from the air suction opening of the negative pressure pumping device 130, besides dust, the hot air enters the air outlet pipe 151 from the air outlet of the negative pressure pumping device 130, the air outlet pipe 151 is arranged along the width of the oven cavity 101, so that the air curtain formed along the width of the oven cavity 101 is hot air, the function of preventing heat in the oven cavity 101 from dissipating is further achieved, the purpose of further utilizing the hot air entering the dust separation cover 141 from the oven cavity 101 is achieved, the heat efficiency is provided, and energy is saved.

Further, the outlet hole 1511 is downwardly inclined.

The air outlet holes 1511 on the air outlet pipe 151 are arranged in a downward inclined manner, so that air can be blown in downwards, recycling is facilitated, and air circulation is formed.

Further, as shown in fig. 6 and 9, the number of the conveying chain assemblies 120 is two, two conveying chain assemblies 120 are spaced from each other and are oppositely arranged to form a containing space, the containing space has a feeding hole 103 and a discharging hole 105, each conveying chain assembly 120 is correspondingly provided with one dust-separating assembly 140, two negative pressure pumping devices 130 are arranged, the two negative pressure pumping devices 130 are correspondingly arranged on the feeding hole 103 and the discharging hole 105, the other end of the air outlet pipe 151 extends to the opposite dust-separating cover 141, and the air outlet holes 1511 are uniformly distributed along the axial direction.

The aforesaid conveying chain 125 through relative both sides conveys the object to discharge gate 105 from feed inlet 103, and the other end of play tuber pipe 151 extends to the dust hood 141 of offside for play tuber pipe 151 can span the accommodation space, and a plurality of exhaust vents 1511 evenly goes out the air downwards. Because the air outlet pipe 151 is just arranged at the feed inlet 103 and the discharge outlet 105, the air outlet pipe 151 has thermal insulation kinetic energy at the same time, and heat loss at the feed inlet 103 and the discharge outlet 105 can be prevented. Because the air outlet 1511 of the air outlet pipe 151 blows air obliquely downward, the blown hot air passes through the circular guide furnace chamber below the feed inlet 103 and the discharge outlet, and further returns to the inside of the furnace chamber 101 of the preheating furnace. Therefore, the hot air after dust removal is further recycled, and the heat efficiency is improved.

Further, as shown in fig. 7, the tunnel furnace apparatus 100 further includes: the filter device 160, the filter device 160 is disposed at the air suction opening of the negative pressure pumping device 130.

The filtering device 160 may be a filter screen or a filter, and dust brought to the air suction opening of the negative pressure suction device 130 by the airflow is filtered by the filter screen or the filter, so that the air entering the negative pressure suction device 130 can be purified, and the purified air enters the circulation through the air outlet pipe 151, thereby improving the quality of the circulating air. Wherein, the dust can be adsorbed on a filter or a filter screen and can be removed periodically.

Further, as shown in fig. 7, the tunnel furnace apparatus 100 further includes: the dust collecting box 190 is arranged below the filtering device 160, and the dust collecting box 190 is detachably connected with the shell of the negative pressure pumping device 130.

The dust collecting box 190 is disposed below the air inlet of the negative pressure pumping device 130, and the dust collecting box 190 can collect the dust attached to the filter device 160. Wherein, a plate body structure is arranged on the shell of the negative pressure pumping device 130, two positioning columns are arranged on the plate body structure, a through hole is arranged at the edge of the dust collection box 190, and the positioning columns penetrate through the through hole to position the dust collection box 190, so as to realize the detachable connection of the dust collection box 190. The dust collecting box 190 is suspended below the air suction opening of the negative pressure pumping device 130, and is fixed by the pressure generated by the elastic deformation of the flange, so that the dust collecting box is convenient to take and place, and maintenance personnel can take down the dust regularly.

Furthermore, in the direction away from the air outlet of the negative pressure pumping device 130, the air outlets 1511 are uniformly arranged along the axial direction at intervals in sequence, and the aperture of the air outlets 1511 is gradually reduced.

The filtered hot air is discharged through an air outlet of the negative pressure pumping device 130, an outlet of the negative pressure pumping device 130 is connected with pipelines such as a reducer union, a bent pipe and a straight pipe, an air curtain pipe with a row of air outlet holes is connected to the tail end of the pipeline, and the air curtain pipe is an air outlet pipe 151. The air outlet holes of the air outlet pipe 151 are a row of holes with equal spacing and unequal diameters, the row of holes are orderly and gradually reduced according to a certain proportion, the farther the distance from the negative pressure pumping device 130 is, the smaller the aperture of the air outlet holes 1511 is, and meanwhile, the row of air outlet holes 1511 are inclined downwards by a certain angle, so that the filtered clean hot air is blown downwards in an inclined way, and the air speed blown out from each air outlet hole 1511 is the same.

The dust hood 141, the negative pressure pumping device 130 and the air outlet pipe 151 are symmetrically arranged relative to the center of the furnace body, so that hot air circulation is uniformly distributed in the furnace body.

As shown in fig. 8 and 9, the tunnel furnace facility may be integrally installed or may be composed of a furnace head, a furnace segment, and a furnace tail which are joined together, and the tunnel furnace facility 100 may be installed independently as a unit.

The dust-proof cover 141 and the outer cover of the frame 110 form a semi-closed cavity, and only the movement path of the hanging lug of the jig 127 on the conveying chain 125 is reserved to form a snake-shaped slit-shaped opening.

A centrifugal draught fan is arranged between the dust separation cover 141 and the outer cover of the frame 110, the centrifugal draught fan drafts air through the inner side of the dust separation cover 141, negative pressure is generated in a cavity in the dust separation cover 141, therefore, hot air in the furnace cavity of the tunnel furnace equipment can be pumped into the dust separation cover 141 through the strip-shaped opening by the centrifugal draught fan, and meanwhile, dust generated by the conveying chain 125 and the jig 127 is brought to an air inlet of the centrifugal draught fan by air flow.

The jigs 127 are driven by the transmission chain 125 to run synchronously, so that the transmission is smoother. Specifically, the jig 127 includes: the tray comprises a supporting plate and two end plates, the two end plates are arranged at two opposite ends of the supporting plate respectively, the plurality of clamps are arranged on the supporting plate at intervals in sequence, and the clamps are suitable for clamping objects to be preheated. Wherein, the conveying chain 125 is provided with a pin shaft, the end plate is rotatably connected with the pin shaft, and the pin shaft runs along the gap 143. The jig 127 is rotatably connected with the conveying chain 125, so that the jig 127 cannot be overturned by the gravity of the jig 127 after running to the top, the working surface of the jig 127 still faces upwards, the positions of the jig 127 arranged on the working surface and the object to be heated cannot be changed, the stability of the position of the object to be heated is ensured, and the automatic feeding and discharging are facilitated.

The transmission mechanism 123 is adapted to drive the transmission chain 125 to move back up and down and make the moving track of the transmission chain form a closed loop.

The cells enter the chamber 101 through the inlet port 103 and exit the chamber through the outlet port 105. The inlet 103 is disposed opposite to the outlet 105. The conveyor chain 125 is disposed in the furnace chamber 101, and the running track of the conveyor chain 125 turns back multiple times in the furnace chamber 101 to form a closed loop, which may form a serpentine shape. Wherein, when the frame structures of the furnace head, the furnace section and the furnace tail are spliced with each other, the transmission chain 125 is also spliced with each other. The furnace sections can be arranged into a plurality of furnace sections, the plurality of furnace sections can be sequentially spliced, when the furnace sections are required to be updated or maintained, the furnace sections which are damaged or broken and the transmission chain 125 are only required to be integrally disassembled, the new furnace sections are replaced and reinstalled, and the tunnel furnace equipment can continue to operate, so that the capacity can be increased.

For the convenience of loading and unloading, the conveying chain 125 can be partially located outside the feeding hole 103 during the circulation process, so that the loading module 170 can realize automatic loading. Similarly, the transmission chain 125 can be partially located outside the discharge hole 105 during the circulation operation, so as to facilitate the automatic discharge of the discharging module 180. Wherein, material loading module 170 and unloading module 180 all can carry out material loading, unloading through the electric core clamping jaw.

In addition, the object to be heated is conveyed by the conveyer chain 125 in a running mode of turning back for a plurality of times up and down and going forward in a circuitous way, so that the space is fully utilized, the occupied area is reduced, and the construction cost of the tunnel furnace is saved.

The jig 127 on the conveying chain 125 can move from the feeding hole 103 to the discharging hole 105 in a winding manner. The conveying chain 125 is turned back and circulated for a plurality of times, so that the jig 127 can also be turned back and circulated along with the conveying chain, because the linear distance of the circulating movement of the conveying chain 125 is between the feeding hole 103 and the discharging hole 105, and therefore, the jig 127 can be moved from the feeding hole 103 to the discharging hole 105. When a plurality of such jigs 127 are disposed on the conveying chain 125, a plurality of electric cores disposed on each jig 127 can also run from the feeding hole 103 to the discharging hole. Therefore, the more the number of times of turning back is, the longer the running route of the battery cell is from the feed port 103 to the discharge port, and thus the discharge port running from the feed port 103 is gradually formed in the process of turning back for multiple times, so that the relative running speed of the battery cell is increased, and the heat exchange efficiency is increased. When tool 127 is outside feed inlet 103, conveniently carry out the material loading through material loading module 170, and when the tool outside the discharge gate, make things convenient for unloading module 180 to unload. The jig 127 is connected between the two transmission chains 125, and the two transmission chains 125 are synchronously driven to drive the jig 127 to synchronously operate, so that the operation of the jig 127 is more stable.

The working process of the tunnel furnace equipment is as follows:

1. the feeding module 170 clamps the whole row of battery cores to a tray of a fixture exposed at the feed inlet 103 of the conveying chain through the battery core clamping jaws.

2. The clean air filtered by the filter is blown to the heater by the fan, and the clean hot air enters the furnace chamber by the heating of the heater.

3. The hot air flows from bottom to top, and due to the fact that the temperature of the bottom of the hot air is low, the hot air flows to the left low-pressure area after reaching the top of the hot air, then flows downwards to the lower low-pressure area, is captured by an air inlet of the fan rightwards, enters the fan after being filtered by the filter, and then flows through the heater to form hot air circulation.

4. When the jig 127 is outside the discharge port running along with the conveyor chain, the blanking module 180 clamps the whole row of cells from one jig 127 exposed at the discharge port of the serpentine circulation track through the cell clamping jaws and takes out the cells and sends the cells to the next station.

5. Because the conveying chain is constantly in circulation operation, consequently, can all the tool 127 of passing through all material loading gradually for tool 127 carries electric core and gets into the furnace chamber, also carries out the unloading to tool 127 of operation play discharge gate gradually. Thus, as the serpentine track is stepped through the cycle, the loading module 170 cycles through 1 and the unloading module 180 cycles through 4.

When a fault occurs in the furnace, the conveying chain 125 and the dust separation assembly 140 can be quickly disconnected, and then the furnace section in the middle is moved out, so that quick maintenance is realized.

According to the above description, the present application has the following advantages:

1. the dust-isolating cover 141 forms a semi-closed cavity, so that the dust-isolating effect of the transmission mechanism 123 is ensured, and negative pressure is also favorably formed.

2. And a negative pressure adsorption mode is formed by adopting the induced draft fan, so that the dust removal efficiency is high.

3. The dust is purified at the air suction opening of the negative pressure suction device 130, the hot air can be reused, and the heat loss is reduced.

4. The purified hot air forms high-speed air curtains at the feed inlet 103 and the discharge outlet of the preheating furnace through the air outlet pipe 151, so that the heat loss of the preheating furnace is further reduced.

5. The hot air blown out of the air outlet pipe 151 further returns to the furnace cavity and is not discharged outside the furnace, and the heat is recycled, so that the heat loss is further reduced.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, 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 present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (12)

1. A tunnel furnace apparatus, comprising:

a furnace chamber (101);

a conveyor chain assembly (120) disposed in the oven cavity (101), the conveyor chain assembly (120) including a conveyor chain (125);

the two opposite ends of the jig (127) are respectively and rotationally connected with the conveying chain (125) on the corresponding side, so that the jig (127) and the conveying chain (125) synchronously run to convey objects;

the dust separation assembly (140) is suitable for isolating the conveying chain assembly (120) and the connection part between the jig (127) and the conveying chain (125) from the furnace chamber (101).

2. The tunnel furnace installation according to claim 1, characterized in that the dust-separation assembly (140) comprises:

a dust shield (141) having a closed chamber;

the gap (143) is arranged on the dust separation cover (141), and the gap (143) is communicated with the closed chamber;

the conveying chain (125) is located in the closed cavity, and the jig (127) is rotatably connected with the conveying chain (125) through a connecting part penetrating through the gap (143).

3. The tunnel furnace apparatus of claim 2, further comprising:

and the negative pressure pumping device (130) is suitable for forming negative pressure on the closed cavity of the dust separation cover (141).

4. The tunnel oven apparatus of claim 3, wherein the oven chamber (101) has an inlet (103) and an outlet (105), the underpressure-drawing device (130) has an air suction opening and an air outlet, the air suction opening of the underpressure-drawing device (130) is located in the closed chamber for sucking air, the tunnel oven apparatus further comprising:

air curtain device (150), air curtain device (150) is including going out tuber pipe (151), go out the one end of tuber pipe (151) with take out negative pressure equipment (130) the air outlet is connected, it follows to go out tuber pipe (151) the width setting of furnace chamber (101), it is equipped with a plurality of exhaust vents (1511) along the axial to go out tuber pipe (151), with feed inlet (103) and/or discharge gate (105) form the air curtain.

5. The tunnel furnace installation according to claim 4, characterised in that the ventilation openings (1511) are arranged obliquely downwards.

6. The tunnel furnace equipment according to claim 5, wherein the plurality of air outlets (1511) are sequentially and uniformly arranged at intervals along the axial direction in a direction away from the air outlet of the negative pressure pumping device (130), and the aperture of the plurality of air outlets (1511) is gradually reduced.

7. The tunnel furnace installation of any one of claims 4 to 6, further comprising:

and the filtering device (160) is arranged at the air suction opening of the negative pressure pumping device (130).

8. The tunnel furnace apparatus of claim 7, further comprising:

and the dust collection box (190) is arranged below the filtering device (160), and the dust collection box (190) is detachably connected with the shell of the negative pressure pumping device (130).

9. The tunnel furnace installation according to any one of claims 2 to 6, further comprising a frame (110), the conveyor chain assembly (120) further comprising a transmission mechanism (123), the transmission mechanism (123) comprising:

a first chain wheel (1231) rotatably connected to the top of the frame (110);

the second chain wheel (1233) is rotatably connected to the bottom of the rack (110), and the first chain wheel (1231) and the second chain wheel (1233) are arranged in a staggered manner up and down so as to drive the conveying chain (125) to move back and forth up and down and translate in the horizontal direction;

wherein the dust-proof cover (141) is adapted to shield the first and second sprockets (1231, 1233) and an area where the first sprocket (1231) extends downward to the second sprocket (1233) and an area where the second sprocket (1233) extends upward to the first sprocket (1231).

10. The tunnel furnace installation according to claim 9, characterized in that the dust hood (141) comprises:

the first partition plate (1411) is provided with a first cover (1413) at the top and a bottom plate (1415) at the bottom, the bottom plate (1415) and the first cover (1413) are arranged vertically and oppositely, and the first chain wheel (1231) is positioned in the first cover (1413);

the bottom of the second clapboard (1412) is provided with a second cover cap (1414), the top of the second clapboard is provided with a top plate (1416), the top plate (1416) and the second cover cap (1414) are arranged in an up-and-down opposite mode, and the second chain wheel (1233) is positioned in the second cover cap (1414);

wherein the first cover (1413) is connected to the top plate (1416) on the side, the second cover (1414) is connected to the bottom plate (1415) on the side, and the gap (143) is formed between the first partition (1411) and the second partition (1412), between the first partition (1411) and the first cover (1413), and between the second partition (1412) and the second cover (1414).

11. The tunnel furnace installation according to claim 9, characterized in that the first sprocket (1231) is arranged above a center line between two adjacent second sprockets (1233).

12. The tunnel oven apparatus of claim 1, wherein the oven chamber (101) has an inlet opening (103) and an outlet opening (105), the tunnel oven apparatus further comprising:

an air curtain device (150) for forming an air curtain at the feed opening (103) and/or the discharge opening (105).

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