CN219956129U - Drainage device and kiln - Google Patents

Abstract

The utility model provides a drainage device and a kiln, and belongs to the technical field of kilns. The drainage device comprises a receiving disc, a condensed water drain pipe and a condensed water diversion structure; the receiving disc is arranged on the bottom wall of the furnace body, the receiving disc is provided with a drain hole in a penetrating way, and the top end of the drain hole is used for receiving condensed water in the furnace body; the bottom of the drain hole is communicated with a condensed water drain pipe. The condensed water diversion structure is arranged above the receiving disc, and surrounds the periphery of the receiving disc, and is provided with a diversion wall surface used for diversion of condensed water in the furnace body so that the condensed water flows to the drain hole. The drain device is provided with a condensed water guide structure so that condensed water in the furnace flows to the drain hole and is discharged outwards through the condensed water drain pipe. The drainage device can effectively drain condensed water in the kiln, and avoid the influence of the water on the quality of materials in the kiln and the service life of equipment in the kiln.

Description

Drainage device and kiln

Technical Field

The utility model relates to the technical field of kilns, in particular to a drainage device and a kiln.

Background

The lithium ion battery is widely used because of the characteristics of energy storage, rapid charge and discharge, long cycle life, environmental friendliness and the like, and the positive electrode material is one of the key factors for determining the performance of the lithium ion battery. In the production process of the lithium battery anode material, a key process is that the anode material is sintered, equipment required by sintering is a kiln, and the sintering kiln is an important component of industrial equipment, but the kiln applicable to the lithium battery ternary high-nickel anode material is usually less.

According to the reaction equation of the high-nickel ternary cathode material: me (OH) ₂ +LiOH·H ₂ O+O ₂ ↑→LiMeO ₂ +H ₂ O ≡ (wherein Me (OH) ₂ Is a ternary positive electrode precursor), a large amount of water vapor can be discharged in the sintering process of the ternary high-nickel positive electrode material of the lithium battery.

The control of the moisture of the high-nickel ternary cathode material is particularly important to the product performance and the product quality. If the water content is high, the residual lithium of the product can be increased, so that the gas production of the battery is increased, and the performance and the safety of the product can be greatly influenced. Meanwhile, after condensing water vapor in the sintering process of the product, the roller and the roller fixing and detecting device of the kiln can be corroded, so that the service lives of the roller and related devices are shortened, manpower and material resources are consumed for maintenance, and the operation cost is increased for later maintenance.

In view of this, the present utility model has been made.

Disclosure of Invention

One of the purposes of the utility model is to provide a drainage device which can effectively drain condensed water in a kiln, and avoid the influence of the water on the quality of materials in the kiln and the service life of equipment in the kiln.

Another object of the present utility model is to provide a kiln comprising the above-mentioned drainage device.

The utility model can be realized as follows:

in a first aspect, the present utility model provides a drainage device, comprising a receiving tray, a condensate drain pipe, and a condensate diversion structure;

the receiving disc is arranged on the bottom wall of the furnace body of the kiln, the receiving disc is provided with a drain hole in a penetrating way, the top end of the drain hole is used for receiving condensed water in the furnace body, and the bottom end of the drain hole is communicated with the condensed water drain pipe;

the condensed water diversion structure is positioned above the receiving disc, and is arranged around the periphery of the receiving disc, and is provided with a diversion wall surface for diversion of condensed water in the furnace body to the drain hole.

In an alternative embodiment, the condensate water guiding structure comprises a plurality of condensate water guiding blocks which are distributed around the periphery of the receiving disc in sequence, and the condensate water guiding blocks are provided with guiding wall surfaces.

In an alternative embodiment, the flow wall surface is inclined at an angle a of 20 DEG.ltoreq.a.ltoreq.40 DEG with respect to the receiving disk.

In an alternative embodiment, the drainage device further comprises a U-shaped condensate water pipe and an outer drain pipe;

one end of the U-shaped condensate water pipe is connected with one end, far away from the drain hole, of the condensate water drain pipe, and the other end of the U-shaped condensate water pipe is connected with the outer drain pipe.

In an alternative embodiment, the drainage device further comprises a water receiving disc and a communicating pipe, wherein the water receiving disc is arranged along the periphery of the top wall of the furnace body and used for backflow collection of condensed water at the position of the furnace top in the furnace body, the top end of the communicating pipe is connected with the water receiving disc, the bottom end of the communicating pipe is connected with the condensed water drain pipe, and the communicating pipe is used for draining the condensed water in the water receiving disc to the condensed water drain pipe.

In a second aspect, the utility model provides a kiln comprising a kiln body and a drainage device according to any of the preceding embodiments, the tray being arranged on the bottom wall of the kiln body.

In an alternative embodiment, the kiln further comprises a heating device and a transmission rod, wherein the heating device is connected with the kiln body and used for heating the sagger in the kiln body; the transmission rod is connected with the furnace body and is used for driving the sagger to move in the furnace body.

In an alternative embodiment, the heating device comprises an upper heating rod and an upper heating rod protection cotton sleeve, wherein the upper heating rod is arranged in the furnace body and is positioned above the transmission rod, and the upper heating rod is sleeved on the upper heating rod protection cotton sleeve.

In an alternative embodiment, the heating device comprises a lower heating rod and a lower heating rod protection cotton sleeve, wherein the lower heating rod is arranged in the furnace body and positioned below the transmission rod, and the lower heating rod is sleeved by the lower heating rod protection cotton sleeve.

In an alternative embodiment, the kiln further comprises a base and a gas sampling port, wherein the base is arranged at the bottom of the kiln body, and the gas sampling port is arranged at the kiln body.

The beneficial effects of the utility model include:

the drainage device provided by the utility model enables condensed water in the furnace to flow to the drainage hole through the condensed water diversion structure, and then is discharged outwards through the condensed water drainage pipe. The drainage device can effectively drain condensed water in the kiln, and avoid the influence of the water on the quality of materials in the kiln and the service life of equipment in the kiln.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a kiln provided in this embodiment;

FIG. 2 is a schematic view of the drainage device of FIG. 1;

FIG. 3 is a schematic view of the exhaust apparatus of FIG. 1 at a first view angle;

fig. 4 is a schematic structural view of the exhaust apparatus in fig. 1 at a second view angle.

Icon: 100-kiln; 10-a furnace body; 11-an exhaust gas discharge passage; 12-a gas sampling port; 13-arch roof; 14-insulating cotton; 20-a drainage device; 21-a receiving tray; 22-a condensate drain pipe; 23-condensate pipes; 24-arranging an outer pipe; 25-a condensate water diversion structure; 251-flow guiding wall surface; 26-a water pan; 27-communicating pipe; 30-an exhaust device; 31-an adjustable telescopic exhaust structure; 311-mounting a tube; 312-exhaust hood; 3121—a bell mouth exhaust pipe; 3122—a telescopic adjustment lever; 32-an exhaust duct; 33-a first exhaust port gate valve; 331-exhaust valve opening scale marks; 34-a main exhaust duct; 341-a main exhaust port; 35-a second exhaust port gate valve; 36-V type ash removal port; 361-blocking the observation port by dust; 40-heating device; 41-upper heating rod; 42-upper heating rod to protect the cotton sleeve; 43-lower heating rod; 44-lower heating rod to protect the cotton sleeve; 50-a transmission rod; 60-base; 200-sagger.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

When the positive electrode material is sintered in the furnace, the raw materials for sintering the positive electrode material are lithium hydroxide monohydrate and nickel cobalt manganeseHydroxide, according to the positive electrode material sintering reaction formula: me (OH) ₂ +LiOH·H ₂ O+O ₂ ↑→LiMeO ₂ +H ₂ O ∈, and a lot of water vapor is generated during sintering. The roof of the furnace body 10 is arched, and part of water vapor can be condensed and reflowed due to temperature difference when passing through the arched roof 13.

Referring to fig. 1 to 4, the present embodiment provides a kiln 100, which includes a kiln body 10, a water draining device 20 (shown in fig. 2), an air exhausting device 30 (shown in fig. 3 and 4), a heating device 40, a transmission rod 50, a base 60, and other structures.

Wherein, drainage device 20 wholly is located the below of furnace body 10, can discharge the comdenstion water in the furnace body 10, not only can avoid above-mentioned backward flow the comdenstion water drop to cause the heating rod to damage on the heating rod, can avoid the comdenstion water to pile up in the stove bottom in addition and corrode furnace body 10, in addition, still be favorable to avoiding steam to influence the quality of the product after the sintering.

Referring to fig. 1 and 2 together, in the present embodiment, the drainage device 20 includes a receiving tray 21, a condensate drain 22, and a condensate guiding structure 25.

The receiving tray 21 is used for setting up in the diapire of the furnace body 10 of kiln 100, and the receiving tray 21 runs through and has seted up the wash port, and the top of wash port is used for accepting the comdenstion water in the furnace body 10, and the bottom and the comdenstion water drain pipe 22 of wash port communicate, and the one end of keeping away from the wash port of comdenstion water drain pipe 22 can be located the furnace body 10 outside.

The condensate water guiding structure 25 is located above the receiving tray 21, and the condensate water guiding structure 25 is disposed around the periphery of the receiving tray 21, and the condensate water guiding structure 25 has a guiding wall 251 for guiding condensate water in the furnace body 10 to the drain hole.

In some embodiments, the condensate water guiding structure 25 includes a plurality of condensate water guiding blocks sequentially distributed around the periphery of the receiving disc 21, and the condensate water guiding blocks have guiding wall surfaces 251.

For reference, the inclination angle of the guide wall 251 with respect to the receiving tray 21 may be a,20 ° or more and 40 ° or less, such as 20 °, 25 °, 30 °, 35 ° or 40 °, or any other value in the range of 20 ° to 40 °. In addition, a may be other acute angles less than 20 ° or greater than 40 °.

By providing the condensed water guiding structure 25, condensed water in the furnace can be quickly and effectively guided into the condensed water drain pipe 22 and discharged out of the kiln 100.

On the support, the drain device 20 is configured to allow condensed water in the furnace to flow to the drain hole through the condensed water guiding structure 25, and then to be discharged outwards through the condensed water drain pipe 22. The drainage device 20 can effectively drain condensed water in the kiln 100, and avoid the influence of the moisture on the quality of materials in the kiln and the service life of equipment in the kiln.

Further, the drainage device 20 further comprises a U-shaped condensed water pipe 23 and an outer drain pipe 24; one end of a U-shaped condensate pipe 23 is connected with one end of the condensate drain pipe 22 far away from the drain hole, and the other end of the U-shaped condensate pipe 23 is connected with an outer drain pipe 24.

By providing a U-shaped condensate pipe 23, it can store part of the water to form a communicating vessel, so as to prevent the pipeline from communicating with the ambient atmosphere to cause the overflow of the gas in the furnace or the gas outside the furnace to enter the furnace. When part of water vapor can flow back into the kiln 100 in the process of sintering the anode material, the condensed water can be quickly guided into the condensed water drain pipe 22 channel through the condensed water guide block at the bottom of the kiln 100, then the condensed water is discharged out of the kiln 100, and the condensed water is discharged out through the outer drain pipe 24 beside the kiln 100.

In addition, the drainage device 20 further comprises a water receiving disc 26 and a communicating pipe 27, wherein the water receiving disc 26 is arranged along the periphery of the top wall of the furnace body 10 and is used for backflow collection of condensed water at the top position in the furnace body 10, the top end of the communicating pipe 27 is connected with the water receiving disc 26, the bottom end of the communicating pipe 27 is connected with the condensed water drain pipe 22, and the communicating pipe 27 is used for draining the condensed water in the water receiving disc 26 to the condensed water drain pipe 22.

On the premise of bearing, the utility model can guide the condensed water formed by condensing and reflowing the water vapor generated in the process of sintering the anode material through the vault of the furnace top by arranging the condensed water guide structure 25, quickly collect the condensed water on the side or bottom of the furnace, and prevent the residual condensed water in the furnace from corroding the furnace body 10. The condensed water drain pipe 22 is connected with the furnace body 10, is led to the side surface of the furnace body 10 after passing through the furnace bottom, and then is discharged through the outer drain pipe 24, a U-shaped condensed water pipe 23 is designed between the outer drain pipe 24 and the condensed water drain pipe 22, so that part of water can be stored to form a communicating vessel, and when the condensed water is discharged, a liquid seal can be formed, so that the pipeline can be prevented from being communicated with the ambient atmosphere, namely, the overflow of gas in the furnace or the entering of gas outside the furnace into the furnace can be prevented.

In addition, during the sintering process of the cathode material, part of the water vapor is returned by condensation in the discharging process, and flows back to the furnace wall along the arc-shaped wall in the furnace or drops onto the heating device 40 or the transmission rod 50, and the transmission rod 50 is connected with the sagger 200 in the furnace body 10 for driving the sagger 200 to move in the furnace body 10, so that the sagger is sent into or sent out of the furnace body 10, and related structures are damaged. In this embodiment, the water pan 26 and the communicating pipe 27 are provided, where the water pan 26 can reflux and collect condensate at the top of the furnace 10, and the communicating pipe 27 can drain the condensate in the water pan 26 to the condensate drain pipe 22, so as to prevent the condensate from flowing back and dropping onto the heating device 40 or the driving rod 50, and effectively prevent the heating device 40 or the driving rod 50 from being damaged.

Further, referring to fig. 1, 3 and 4, in the present embodiment, an exhaust device 30 is connected to the furnace 10 for exhausting the exhaust gas in the furnace 10. The exhaust device 30 is integrally arranged above the furnace body 10, and the exhaust device 30 is efficient and adjustable and can control the exhaust amount.

Specifically, the exhaust device 30 includes an adjustable telescopic exhaust structure 31 and an exhaust duct 32; the furnace body 10 is provided with an exhaust gas discharge channel 11, and an adjustable telescopic exhaust structure 31 is arranged in the exhaust gas discharge channel 11; the exhaust duct 32 is connected to the top end of the adjustable telescopic exhaust structure 31.

The form of the adjustable telescopic exhaust structure 31 is not limited, in this embodiment, the adjustable telescopic exhaust structure 31 includes a mounting pipe 311 and an exhaust hood 312, the bottom end of the mounting pipe 311 is mounted to the exhaust gas discharge channel 11, and the bottom end of the exhaust hood 312 is correspondingly covered on the top end of the mounting pipe 311; the top end of the exhaust hood 312 is slidably coupled to the exhaust duct 32 in the up-down direction to adjust the distance between the bottom end of the exhaust hood 312 and the top end of the mounting pipe 311.

For reference, the adjustable telescopic exhaust structure 31 further includes a first exhaust port gate valve 33; the first exhaust port gate valve 33 is insertably fitted with the mounting pipe 311 to adjust the exhaust sectional area of the mounting pipe 311.

According to S _{Cross-sectional area of exhaust duct 32} When the exhaust air volume/exhaust air speed is required to be increased, the exhaust hood 312 can be downwardly adjusted to be in close contact with the mounting pipe 311, so as to realize the forced exhaust and direct pumping action of the gas in the furnace, improve the exhaust air speed, and simultaneously, the opening degree of the first exhaust gate valve 33 can be also adjusted to be increased, the exhaust sectional area of the exhaust pipeline 32 is increased, the exhaust gas in the furnace is rapidly discharged, and the control of the exhaust volume is realized. When the exhaust amount needs to be weakened, the opening degree of the first exhaust port gate valve 33 is reduced, and meanwhile, the exhaust hood 312 is adjusted to be away from the mounting pipe 311 to have a certain distance, so that the exhaust wind speed is reduced, and the exhaust wind quantity is reduced.

The exhaust hood 312 includes a bell mouth exhaust pipe 3121 and a telescopic adjusting rod 3122, wherein the bottom end of the bell mouth exhaust pipe 3121 is correspondingly covered on the top end of the mounting pipe 311, the bottom end of the telescopic adjusting rod 3122 is connected with the top end of the bell mouth exhaust pipe 3121, and the top end of the telescopic adjusting rod 3122 is slidably connected with the exhaust pipe 32 along the up-down direction.

By adjusting the telescopic adjustment lever 3122, the height of the bell mouth exhaust pipe 3121 can be adjusted to change the distance of the bell mouth exhaust pipe 3121 from the mounting pipe 311. The horn mouth design can play a role in guiding the flow of the waste gas; in addition, the joint of the exhaust port and the horn mouth type exhaust port adopts an adjustable telescopic design, so that the exhaust size can be conveniently adjusted according to the type of the sintered material.

Referring to fig. 4, in this embodiment, the first exhaust port gate valve 33 is provided with an exhaust valve opening scale line 331 to achieve convenient and quick adjustment of the exhaust size.

As a reference, the furnace section in the embodiment is designed as an exhaust double-exhaust channel, so that the exhaust of the left side and the right side in the furnace can be simultaneously carried out, and the exhaust efficiency is improved. Specifically, the number of the exhaust gas discharge channels 11 is two, and the number of the adjustable telescopic exhaust structure 31 and the number of the exhaust pipelines 32 are two and correspond to the exhaust gas discharge channels 11 one by one; the two exhaust pipes 32 are all L-shaped pipes, the longitudinal sections of the exhaust pipes 32 are connected with the adjustable telescopic exhaust structure 31, the transverse sections of the two exhaust pipes 32 are connected, and the connection parts extend upwards to form a main exhaust pipe 34. A main exhaust port 341 is formed at the top end of the main exhaust duct 34.

In this embodiment, the exhaust device 30 further includes a second exhaust port gate valve 35 to facilitate adjusting the exhaust condition of the main exhaust duct 34. Specifically, the second exhaust port gate valve 35 is insertably fitted with the main exhaust duct 34 so as to adjust the exhaust sectional area of the main exhaust duct 34. The second exhaust gate valve 35 can control the cross-sectional area of the exhaust duct 32 of the main exhaust duct 34, thereby controlling the amount of exhaust. Similarly, opening graduation marks may be provided on the second exhaust port gate valve 35.

On the other hand, the kiln 100 device in this embodiment can adjust the exhaust mode and the exhaust size according to different types of positive electrode materials, for example, by adjusting two gate valves, the required exhaust amount can be adjusted.

In this embodiment, the furnace body 10 is provided with a gas sampling port 12. Since sintering the positive electrode material is required to be performed under an atmospheric condition, gas concentration detection is required, and at this time, gas detection can be performed through the gas sampling port 12 in order to detect the condition of the furnace atmosphere during sintering of the positive electrode material.

It should be noted that, the exhaust gas discharged during the sintering process of the cathode material is accompanied by the discharge of dust of the cathode material, so that dust materials are easy to accumulate in the accumulation pipeline along with time, and the exhaust is not smooth, in this embodiment, a V-shaped ash removing port 36 is further disposed at the joint of the two exhaust pipelines 32, and the V-shaped ash removing port 36 is opposite to the main exhaust pipeline 34.

By providing the ash removal port at the lower end of the main exhaust duct 34, and by adopting the "V" design, dust falling back into the duct can be effectively collected, and the duct is prevented from being blocked.

Further, the bottom end of the ash removing opening can be reserved with a dust blocking observation opening 361 so as to realize whether blocking exists or not under the condition that the ash removing opening is not dismounted. In addition, the dust cleaning can be carried out through the detachable dust cleaning opening, so that smooth exhaust is ensured, meanwhile, the recycling of materials is realized, and the resource utilization rate is improved.

In this embodiment, the furnace body 10 may further be provided with insulating bricks and/or insulating cotton 14 for insulating heat built in the furnace section of the furnace 100, so as to ensure the heat insulation of the furnace section of the furnace 100 and ensure the uniformity of sintering temperature in the sintering process of the anode material.

In this embodiment, the heating device 40 is connected to the furnace body 10, so as to heat the sagger 200 in the furnace body 10, and further heat the lithium battery positive electrode material to be sintered filled in the sagger 200.

The heating device 40 comprises an upper heating rod 41 and an upper heating rod protective cotton sleeve 42, the upper heating rod 41 is arranged in the furnace body 10 and is positioned above the transmission rod 50, and the upper heating rod 41 is sleeved on the upper heating rod protective cotton sleeve 42.

Further, the heating device 40 further includes a lower heating rod 43 and a lower heating rod protective cotton sleeve 44, the lower heating rod 43 is disposed in the furnace body 10 and is located below the transmission rod 50, and the lower heating rod 43 is sleeved with the lower heating rod 44.

By providing the heating device 40, the material in the cartridge can be effectively heated.

In other embodiments, only the upper heating rod 41 and the upper heating rod 41 may protect the cotton sleeve, or only the lower heating rod 43 and the lower heating rod may protect the cotton sleeve 44.

When the lithium battery anode material is sintered in the kiln 100, the transmission rod 50 drives the sagger 200 forward to reach the position of sintering the anode material, the upper heating rod 41 and the lower heating rod 43 provide heat for sintering the anode material, the sintering of the anode material is accelerated, and the heat preservation cotton 14 and/or the heat preservation bricks in the kiln 100 can provide guarantee for the uniformity of the sintering temperature of the heat preservation of the kiln 100.

The base 60 is disposed at the bottom of the furnace body 10 to play a supporting role.

As described above, the kiln 100 provided in this embodiment has at least the following advantages:

for the sintering process of the high-nickel ternary anode material, the kiln 100 device can effectively drain water to avoid the increase of residual lithium of products and corrosion of equipment such as kiln 100 rollers caused by water vapor or water, so that the maintenance and operation cost can be reduced, and the safety risk can be reduced to a certain extent. Meanwhile, the kiln 100 device can avoid defects such as poor performance of the anode material and the like by effectively exhausting. The kiln 100 can realize exhaust adjustment, condensate water collection and the like in the sintering process of different anode materials, and has the advantages of strong compatibility, high efficiency and simple structure.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A drainage device (20), characterized in that the drainage device (20) comprises a receiving disc (21), a condensate drain pipe (22) and a condensate guiding structure (25);

the receiving disc (21) is used for being arranged on the bottom wall of the furnace body (10) of the kiln (100), the receiving disc (21) is provided with a drain hole in a penetrating mode, the top end of the drain hole is used for receiving condensed water in the furnace body (10), and the bottom end of the drain hole is communicated with the condensed water drain pipe (22);

the condensate water diversion structure (25) is arranged above the receiving disc (21), the condensate water diversion structure (25) is arranged around the periphery of the receiving disc (21), and the condensate water diversion structure (25) is provided with a diversion wall surface (251) for diversion of condensate water in the furnace body (10) to the drain hole.

2. The drain device (20) according to claim 1, wherein the condensate water guiding structure (25) comprises a plurality of condensate water guiding blocks distributed in sequence around the periphery of the receiving tray (21), the condensate water guiding blocks having the guiding wall surface (251).

3. The drainage device (20) according to claim 2, wherein the angle of inclination of the deflector wall surface (251) with respect to the tray (21) is a,20 ° -a-40 °.

4. A drain device (20) according to any one of claims 1-3, wherein the drain device (20) further comprises a U-shaped condensate pipe (23) and an outer drain pipe (24);

one end of the U-shaped condensate pipe (23) is connected with one end, far away from the drain hole, of the condensate drain pipe (22), and the other end of the U-shaped condensate pipe (23) is connected with the outer drain pipe (24).

5. A drainage device (20) according to any one of claims 1-3, wherein the drainage device (20) further comprises a water receiving tray (26) and a communicating pipe (27), the water receiving tray (26) is arranged along the periphery of the top wall of the furnace body (10) and is used for backflow collection of condensed water at the top position in the furnace body (10), the top end of the communicating pipe (27) is connected with the water receiving tray (26), the bottom end of the communicating pipe (27) is connected with the condensed water drain pipe (22), and the communicating pipe (27) is used for draining the condensed water in the water receiving tray (26) to the condensed water drain pipe (22).

6. Kiln (100) characterized by comprising a kiln body (10) and a drainage device (20) according to any of claims 1-5, the tray (21) being arranged at the bottom wall of the kiln body (10).

7. Kiln (100) according to claim 6, characterized in that the kiln (100) further comprises a heating device (40) and a transmission rod (50), the heating device (40) being connected to the furnace body (10) and being adapted to heat a sagger (200) inside the furnace body (10);

the transmission rod (50) is connected with the furnace body (10), and the transmission rod (50) is used for driving the sagger (200) to move in the furnace body (10).

8. Kiln (100) according to claim 7, characterized in that the heating device (40) comprises an upper heating rod (41) and an upper heating rod protection cotton sleeve (42), the upper heating rod (41) being arranged in the kiln body (10) and above the transmission rod (50), the upper heating rod (41) being sheathed by the upper heating rod protection cotton sleeve (42).

9. Kiln (100) according to claim 7 or 8, characterized in that the heating device (40) comprises a lower heating rod (43) and a lower heating rod protection cotton sleeve (44), the lower heating rod (43) being arranged in the kiln body (10) and being located below the transmission rod (50), the lower heating rod protection cotton sleeve (44) being sheathed with the lower heating rod (43).

10. The kiln (100) according to claim 6, characterized in that the kiln (100) further comprises a base (60) and a gas sampling port (12), the base (60) being arranged at the bottom of the furnace body (10); the gas sampling port (12) is arranged on the furnace body (10).