CN220793892U - Sagger fixing device - Google Patents

Abstract

The utility model relates to a sagger fixing device which comprises a connecting structure, wherein the connecting structure is arranged among a plurality of saggers, the plurality of saggers are arranged on the same plane in parallel, and the plurality of saggers are connected by the connecting structure to form an integrated structure. The sagger fixing device can clamp and connect a plurality of saggers arranged on the same layer together, so that a plurality of saggers arranged in a split mode are connected to form an integrated structure, stability among the saggers on the same layer is improved, stability of the saggers arranged in a multi-layer stacking mode is improved, and stacked saggers are prevented from falling.

Description

Sagger fixing device

Technical Field

The utility model relates to the technical field of powder calcination, in particular to a sagger fixing device.

Background

In the case of calcining a powder raw material, there is a heat treatment method in which the powder raw material is directly fed into a furnace chamber and calcined, for example, the powder raw material is calcined by a rotary kiln, a steel belt furnace, or the like. In the heat treatment mode, powder materials can be directly contacted with a hearth, and at high temperature, the hearth materials can react with the materials, or scraps generated on the surface of the hearth are brought into the materials, so that the materials are polluted. Therefore, in order to prevent the hearth from directly contacting the powder material, there is another heat treatment method in which the powder material is put into a special container (the container material does not react with the powder material at high temperature), and then the container is put on a carrier of a kiln and then sent into the hearth for calcination, such as a pusher kiln, a roller kiln or a tunnel kiln. Taking the positive and negative electrode materials of lithium ion or sodium ion battery as examples, the production process of the materials needs to be calcined at high temperature. The common calcination mode is to put the powder raw materials of the anode and cathode materials into a special container (sagger) (ceramic or graphite sagger can be selected according to the requirements of different materials). And then placing the sagger on a carrying tool of the kiln (such as a roller way of a roller kiln, a push plate of a push plate kiln or a trolley of a tunnel kiln), and continuously conveying the sagger into a high-temperature furnace chamber of the kiln by the carrying tool for calcination.

In order to increase the productivity and processing efficiency of the kiln, a plurality of saggers are generally stacked and arranged on a carrier. As shown in fig. 1, a cross-sectional view (perpendicular to the length direction of the kiln) of a four-row double-layer roller kiln, which is common in the production of lithium battery cathode materials. In this example, the magazines entering the roller kiln at the same time are arranged in four rows, and the magazines in each row are stacked one above the other, so that a total of 8 magazines enter the furnace chamber of the roller kiln simultaneously for calcination processing.

In order to further increase the processing efficiency of the calcination mode and the productivity of the kiln, manufacturers tend to increase the number of saggers simultaneously entering the kiln. Increasing the number of stacked saggers is a common enhancement. For example, in roller kilns, the number of stacked saggers increases from two to three, four, and even six. In a pushed slab kiln or tunnel kiln, the sagger can be stacked to 8 layers or even more than 10 layers. When the number of stacked sagger layers is greatly increased, the productivity of the kiln can be greatly improved, but a great risk is brought, namely the stability of the stacked sagger stacks is greatly reduced. During the operation of the kiln, the stacked saggers may topple in the furnace chamber or outside the furnace chamber due to the vibration or the change of the moving speed of the carrier of the sagger stack, resulting in material loss, equipment damage and time delay.

Disclosure of Invention

Therefore, the utility model aims to solve the technical problem that the stacked saggers are easy to topple in the prior art, and provides the saggers fixing device which can clamp and connect a plurality of saggers arranged on the same layer together, so that a plurality of saggers arranged in a split mode are connected to form an integrated structure, the stability of the saggers on the same layer is improved, the stability of the saggers arranged in a multi-layer stacking mode is improved, and the stacked saggers are prevented from toppling.

In order to solve the technical problems, the utility model provides a sagger fixing device, which comprises a connecting structure, wherein the connecting structure is arranged among a plurality of saggers, the plurality of saggers are arranged on the same plane in parallel, and the plurality of saggers are connected by the connecting structure to form an integrated structure.

In one embodiment of the present utility model, the connection structure is a snap-in structure, the snap-in structure is clamped on the side walls of the two sagger, and the snap-in structure includes: two clamping arms respectively pressed against the side walls of the two saggers and a connecting arm connected with the two clamping arms.

In one embodiment of the utility model, the connecting arms are arranged to extend outwards to form a support table.

In one embodiment of the utility model, the spacing between the two clamping arms is greater than or equal to the sum of the thicknesses of the two sagger side walls.

In one embodiment of the present utility model, the connection structure is a cross structure, the cross structure is clamped and arranged on top angles where the four saggers abut, and the cross structure includes: the connecting block and set up the cross recess on the connecting block, the cross recess holding is four the apex angle of casket-like bowl.

In one embodiment of the utility model, the connection blocks are arranged to extend outwardly to form a pallet.

In one embodiment of the present utility model, the connection structure is a desk frame structure, the desk frame structure is clamped and arranged on top corners where the four saggers are abutted, and the desk frame structure includes: the tray comprises a connecting plate and four supporting legs protruding out of the connecting plate, wherein the four supporting legs are respectively inserted into the four saggers.

In one embodiment of the utility model, the device further comprises a limiting structure, wherein the limiting structure is arranged between the upper layer of sagger and the lower layer of sagger which are stacked, and the limiting structure realizes limiting connection of the two layers of saggers.

In one embodiment of the present utility model, the limiting structure includes: the protrusion and the groove are matched;

the bulges are arranged at the top of the side wall of the lower sagger, and the grooves are arranged at the bottom edge of the upper sagger corresponding to the bulges;

or the bulge is arranged at the bottom edge of the upper layer sagger, and the groove is arranged at the top of the side wall of the lower layer sagger corresponding to the bulge.

In one embodiment of the present utility model, the limiting structure includes: the step and the step groove are matched;

the step is arranged at the top angle of the lower layer sagger, and the step groove is arranged at the bottom of the bottom angle of the upper layer sagger corresponding to the step;

or the step is arranged at the bottom of the bottom corner of the upper layer sagger, and the step groove is arranged at the top corner of the lower layer sagger corresponding to the step.

In one embodiment of the utility model, the connection structure is made of ceramic, graphite or metal material.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the sagger fixing device, the connecting structure is arranged between two adjacent saggers on the same layer, so that the saggers on the same layer form an integrated structure, the stability of the sagger stack on a carrier is improved, and under the condition of heightening the number of the sagger stacks, the stability of the sagger stacks on the carrier of a kiln is improved by using the sagger fixing device, so that the number of the saggers stacked can be increased, the productivity and the processing efficiency of the kiln are improved, meanwhile, the stacked sagger stacks can be kept stable integrally on the carrier when the kiln is operated, and even if normal vibration and movement speed change of equipment occur, the dumping risk of the sagger stacks is reduced or even eliminated.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which:

FIG. 1 is a schematic view of a structure in which a sagger is transferred in a furnace body by a carrier;

FIG. 2 is a schematic structural view of an embodiment of a sagger;

FIG. 3 is a schematic structural view of another embodiment of a sagger;

FIG. 4 is a schematic diagram of an embodiment of a snap-in structure;

FIG. 5 is a schematic view of an embodiment of a snap-in structure for connecting a sagger;

FIG. 6 is a schematic view of another embodiment of a snap-in structure;

FIG. 7 is a schematic view of another embodiment of a snap-in structure for connecting a sagger;

FIG. 8 is a schematic diagram of an embodiment of a cross-frame structure;

FIG. 9 is a schematic view of a structure for connecting sagger using a cross-frame structure;

FIG. 10 is a schematic view of another embodiment of a cross-frame structure;

FIG. 11 is a schematic structural view of a desk frame structure;

fig. 12 is a schematic structural view of the connection of the upper and lower sagger layers through the limiting structure.

Fig. 13 is a schematic view of another embodiment of a sagger with a spacing structure.

FIG. 14 is a schematic view of another embodiment of connecting the upper and lower sagger layers using a limiting structure.

Description of the specification reference numerals: 1. a sagger; 11. a notch; 21. a snap-in structure; 211. a clamping arm; 212. a connecting arm; 213. a support table; 22. a cross frame structure; 221. a connecting block; 222. a cross groove; 223. a support; 23. a desk frame structure; 231. a connecting plate; 232. a support leg; 3. a limit structure; 31. a protrusion; 32. a groove; 33. a step; 34. a step groove.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

As described above, when the powder material is calcined, in the prior art, the powder material is placed in the sagger 1, and the sagger 1 is driven to move in the kiln by the carrier, so that different calcining temperatures are changed in the moving process; in order to improve the calcining efficiency, in general, a plurality of saggers 1 are arranged on a supporting surface of a carrier in an array manner, and a plurality of layers of saggers 1 are stacked to form a sagger stack, so that the productivity of the kiln can be greatly improved, but a great risk is brought to the kiln, namely, the stability of the stacked sagger stack can be greatly reduced, and in the running process of the kiln, the sagger 1 stacked very high in the kiln chamber or outside the kiln chamber can be dumped due to the vibration or the movement speed change of the carrier of the sagger stack, so that the loss of materials, the damage of equipment and the delay of working hours are caused.

For the above situation, the inventor of the application finds out according to practical experience and modeling stress analysis: if a plurality of saggers 1 in the same layer are connected together, the saggers 1 in the same layer are taken as a whole, the saggers 1 stacked in multiple layers are equivalent to stacked plates, and the stability of the saggers is greatly improved compared with the independently arranged saggers 1;

on the basis of the theory, the inventor of the application discloses a sagger fixing device, which comprises a connecting structure, wherein the connecting structure is arranged among a plurality of saggers 1, a plurality of saggers 1 are arranged on the same plane in parallel, and the plurality of saggers 1 are connected into an integrated structure by the connecting structure;

according to the sagger fixing device, the stability of the same layer of saggers 1 is improved by arranging the connecting structure, so that the stability of the plurality of layers of saggers 1 stacked on a carrier is improved, the productivity and the processing efficiency of a kiln can be improved under the condition of heightening the stacking quantity of the saggers 1, meanwhile, the stacked saggers can be kept wholly stable on the carrier when the kiln is operated, and even if the carrier is subjected to normal vibration and movement speed change, the risk of dumping the saggers can be reduced or even eliminated, and the sagger fixing device is further described below in connection with specific embodiments.

Example 1

Two types of sagger 1 are commonly used for calcination of powder materials: the edges of a class of sagger 1 are flush as shown in figure 2; the other type of sagger 1 is provided with a notch 11 at the edge, as shown in fig. 3, the purpose of using the sagger 1 with the notch 11 at the edge is to help the gas outside the sagger 1 exchange with the gas in the sagger 1 during calcination, so that the gas required by the reaction of the materials in the sagger 1 at high temperature can be effectively conveyed into the sagger 1, and the waste gas generated by the reaction in the sagger 1 is discharged. Selecting sagger 1 in different forms according to different use requirements; for the sagger 1 with the same edge, when stacking up and down, the four side walls of the lower sagger support the bottom of the upper sagger at the same time. And when the sagger 1 with the notch 11 at the edge is stacked up and down, the upper planes of the four top angles of the lower sagger support the bottom of the upper sagger at the same time.

In this embodiment, referring to fig. 4 and 5, the connection structure is a snap-in structure 21, the snap-in structure 21 is clamped on the side walls of the two sagger 1, and the snap-in structure 21 includes: the clamping arms 211 are respectively pressed against the side walls of the two sagger 1, the connecting arms 212 are connected with the two clamping arms 211, the distance between the two clamping arms 211 is larger than or equal to the sum of the thicknesses of the side walls of the two sagger 1, the side walls of the two sagger 1 are placed on the same plane in a fitting mode, and then the clamping arms 211 are respectively inserted into the two sagger 1 from the upper portions of the two side walls by adopting the buckle type structure 21 of the embodiment, so that the connection and the fixation of the two sagger 1 are realized.

When the snap-in structure 21 is used for connecting the sagger 1 with the notch 11, the sagger can be placed at the notch 11 of the side wall, and the thickness of the connecting arm 212 is only required to be smaller than the height of the notch 11 of the sagger 1, so that the sagger on the upper layer can not be prevented from being placed. However, with respect to the sagger 1 having the flush edge, if such a fixing device of the snap-in structure 21 is used, the edge of the upper sagger is placed on the connection arm 212 of the snap-in structure 21 of the lower sagger while continuing to stack up the one layer sagger 1, which may instead cause instability of the upper sagger due to the relatively small upper surface of the connection arm 212 of the snap-in structure 21.

In order to solve the above problems, referring to fig. 6 and 7, the snap-in structure 21 is further improved on the above basis, the connecting arm 212 is arranged to extend outwards to form the supporting stand 213, the supporting area of the snap-in structure 21 can be increased by arranging the supporting stand 213, and when the sagger 1 with the edge level is stacked up and down, the edge of the upper sagger is placed on the supporting stand 213 of the snap-in structure 21, so that the stacking of the sagger 1 can be more stable.

Example 2

In the above embodiment 1, the snap-in structure 21 can only fix two adjacent sagger 1 at the same time, in order to improve efficiency and reduce the usage of the fixing device, referring to fig. 8 and 9, in this embodiment, the connection structure is configured as a cross frame structure 22, the cross frame structure 22 is clamped and arranged on the top corners where the four saggers 1 abut, and the cross frame structure 22 includes: the four sagger 1 is placed on the same plane in a fitting way based on a central point, and then the cross grooves 222 are respectively inserted into the outer side walls of two adjacent saggers 1 from the upper part of the central point by adopting the cross frame structure 22 of the embodiment, so that the connection and fixation of the four saggers 1 are realized; by means of the cross frame structure 22, four sagger 1 on the same layer can be fixed at one time, so that the use amount of the fixing device can be reduced.

Similarly to the embodiment 1, when the fixing sagger 1 is connected by the cross frame structure 22, when the sagger 1 is continuously stacked upwards, the edge of the upper layer sagger is placed on the connecting block 221 of the cross frame structure 22 of the lower layer sagger, the upper layer sagger is unstable due to the fact that the upper surface of the connecting block 221 of the cross frame structure 22 is smaller, and referring to fig. 10, in the embodiment, the cross frame structure 22 is further improved, the connecting block 221 is arranged to extend outwards to form a supporting table 223, the cross frame structure 22 with the supporting table 223 can be used on the lower layer sagger, the bottom of the upper layer sagger can be placed on the supporting table 223, the upper layer sagger is borne by the supporting table 223, the placement of the upper layer sagger and the lower layer sagger is more stable, and the cross frame structure 22 without the supporting table 223 can be used on the sagger 1 on the uppermost layer.

Example 3

In order to simplify the design of the cross frame structure 22 in the above embodiment 2 and reduce the material consumption, referring to fig. 11, in this embodiment, the connection structure is a desk frame structure 23, the desk frame structure 23 is clamped and arranged on the top corners where the four sagger 1 abuts, and the desk frame structure 23 includes: the four sagger 1 is placed on the same plane in a manner that the four saggers 1 are based on a central point, the side walls are attached, then the four feet 232 are respectively inserted into the four saggers 1 from the upper part of the central point by adopting the desk frame structure 23 of the embodiment, and each foot 232 is in abutting fit with two connected side walls of the sagger 1, so that the connection and fixation of the four saggers 1 are realized; by means of the desk frame structure 23, four sagger 1 on the same layer can be fixed at one time, so that the use amount of the fixing device can be reduced.

Meanwhile, since the area of the connection plate 231 itself is large, a relatively stable supporting surface can be formed without expanding the connection plate 231, and of course, in order to ensure a stable supporting surface in actual use, the connection plate 231 may be expanded in a manner similar to that of embodiments 1 and 2 described above.

Specifically, in the above embodiments 1, 2, and 3, the connection structure is made of ceramic, graphite, or metal material, and may be determined according to the operating temperature and atmosphere of the kiln; taking a lithium battery anode material as an example, ceramic materials or graphite materials (applicable to lithium iron phosphate anode materials) can be selected because metal impurities need to be prevented from entering the anode material; when the sagger 1 fixing device is manufactured by ceramic materials, the sagger 1 fixing device can be formed by pressing or grouting and then calcined at high temperature; when graphite materials are selected, the sagger 1 fixing device can be manufactured by machining the whole graphite block.

Specifically, in practical applications, the snap-in structure 21, the cross frame structure 22, the desk frame structure 23 may be used in combination; for example, when the lower sagger is in the form of the edge with the notch 11, the edge of the notch 11 of the sagger 1 is fixed by the snap-in structure 21, and the top sagger 1 is fixed by the cross frame structure 22 or the desk frame structure, so that the bottom of the upper sagger is carried by four corners of the lower sagger, and the stacking structure of the sagger 1 is stable.

Example 4

In order to prevent relative displacement (play) in the horizontal direction between the upper and lower sagger layers, referring to fig. 12, on the basis of the above embodiment 1/2/3, the fixing device for setting the sagger 1 further includes a limiting structure 3, the limiting structure 3 is disposed between the upper and lower sagger layers 1 stacked, and the limiting structure 3 realizes limiting connection of the two sagger layers 1.

Specifically, the setting of the limit structure 3 includes: a projection 31 and a recess 32 provided in cooperation; the bulges 31 are arranged at the top of the side wall of the lower layer sagger, the grooves 32 are arranged at the bottom edge of the upper layer sagger corresponding to the bulges 31, and when the saggers 1 are stacked up and down, the bulges 31 at the top of the side wall of the lower layer sagger can be embedded into the grooves 32 at the bottom edge of the upper layer sagger, so that the relative displacement of the upper layer sagger and the lower layer sagger in the horizontal direction can be prevented; similarly, the protrusion 31 may be disposed at the bottom edge of the upper layer sagger, and the groove 32 is disposed at the top of the sidewall of the lower layer sagger corresponding to the protrusion 31.

For a flush-edge sagger 1, the structure of the protrusions 31 at the top of the side wall can extend through the entire side wall; for the sagger 1 with the notch 11, only the protrusions 31 are required to be arranged at the four corners.

Example 5

In order to simplify the design of the limiting structure 3 in the above embodiment 4 and reduce the processing difficulty of the sagger, referring to fig. 13 and 14, in this embodiment, the limiting structure is only disposed on the upper part and the bottom of the top corner of the sagger, the limiting structure 3 is disposed between the upper and lower saggers 1 stacked, and the limiting structure 3 realizes the limiting connection of the two saggers 1.

Specifically, the setting of the limit structure 4 includes: a step 33 and a step groove 34 which are arranged in a matching way; the step 33 is arranged at the top of the top corner of the lower layer sagger, the step groove 34 is arranged at the bottom of the top corner of the upper layer sagger corresponding to the step 33, and when the saggers 1 are stacked up and down, the step 33 at the top of the top corner of the lower layer sagger can be embedded into the step groove 34 at the bottom of the top corner of the upper layer sagger, so that the relative displacement of the upper layer sagger and the lower layer sagger in the horizontal direction can be prevented; similarly, the step 31 may be disposed at the bottom of the top corner of the upper layer sagger, and the step groove 34 is disposed at the top of the top corner of the lower layer sagger corresponding to the step 33.

Specifically, in actual use, according to different sagger 1 types, different connection structures and connection modes can be adopted, so that the diversity of the fixing device is increased, for example, the following connection modes are adopted:

for the sagger 1 with the notch 11, the bulge 31 or the step 33 is arranged at four corners, the lower sagger can only be placed on the side wall to connect the sagger 1 by using the buckle type structure 21, otherwise, the bulge 31 edge of the lower sagger and the bottom edge groove 32 of the upper sagger or the step 33 of the lower sagger and the bottom step groove 34 of the upper sagger can be separated by the connecting structure to play a role in fixation;

for a flush-edge sagger 1, the structure of the protrusions 31 at the top of the side wall can penetrate the whole side wall and avoid the connecting structure;

for the sagger 1 with the flush edge, any connecting structure can be omitted in the sagger at the lower layer, the sagger 1 at the top layer is connected into a whole through the connecting structure only by using the connecting structure at the sagger 1 at the top layer, and the saggers at the upper layer and the lower layer are connected through the limiting structure 3 formed by the bulges 31 and the grooves 32 to form a sagger 1 stack with a stable structure.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. The sagger fixing device is characterized by comprising a connecting structure, wherein the connecting structure is arranged among a plurality of saggers, the plurality of saggers are arranged on the same plane in parallel, and the plurality of saggers are connected by the connecting structure to form an integrated structure.

2. The sagger fixing device according to claim 1, characterized in that: the connection structure is buckle formula structure, buckle formula structure centre gripping sets up two on the lateral wall of sagger, buckle formula structure includes: two clamping arms respectively pressed against the side walls of the two saggers and a connecting arm connected with the two clamping arms.

3. The sagger fixing device according to claim 2, characterized in that: the connecting arms extend outwards to form a supporting table.

4. The sagger fixing device according to claim 2, characterized in that: the distance between the two clamping arms is larger than or equal to the sum of the thicknesses of the side walls of the two sagger.

5. The sagger fixing device according to claim 1, characterized in that: the connection structure is the cross frame structure, cross frame structure centre gripping sets up four on the apex angle of sagger butt, the cross frame structure includes: the connecting block and set up the cross recess on the connecting block, the cross recess holding is four the apex angle of casket-like bowl.

6. The sagger fixing device according to claim 5, characterized in that: the connecting blocks extend outwards to form a supporting table.

7. The sagger fixing device according to claim 1, characterized in that: the connection structure is a desk frame type structure, desk frame type structure centre gripping sets up four on the apex angle of sagger butt, desk frame type structure includes: the tray comprises a connecting plate and four supporting legs protruding out of the connecting plate, wherein the four supporting legs are respectively inserted into the four saggers.

8. The sagger fixing device according to claim 1, characterized in that: the device further comprises a limiting structure, wherein the limiting structure is arranged between the upper layer of sagger and the lower layer of sagger which are stacked, and the limiting structure realizes limiting connection of the two layers of saggers.

9. The sagger fixing device according to claim 8, characterized in that: the limit structure comprises: the protrusion and the groove are matched;

the bulges are arranged at the top of the side wall of the lower sagger, and the grooves are arranged at the bottom edge of the upper sagger corresponding to the bulges;

or the bulge is arranged at the bottom edge of the upper layer sagger, and the groove is arranged at the top of the side wall of the lower layer sagger corresponding to the bulge.

10. The sagger fixing device according to claim 8, characterized in that: the limit structure comprises: the step and the step groove are matched;

the step is arranged at the top of the top angle of the lower-layer sagger, and the step groove is arranged at the bottom of the bottom angle of the upper-layer sagger corresponding to the step;

or the step is arranged at the bottom of the bottom corner of the upper layer sagger, and the step groove is arranged at the top corner of the lower layer sagger corresponding to the step.