Spray drying equipment and battery manufacturing system

Abstract

The present application relates to a drying apparatus and a battery manufacturing system including a drying tower and a cooling mechanism. [Solution] The drying tower is provided with a cooling mechanism, and the cooling mechanism cools and lowers the temperature of the inner wall of the drying tower so that the temperature of the inner wall of the drying tower is controlled within a required temperature range. When spray drying is performed in the drying tower in this manner, after the material comes into contact with the inner wall of the drying tower, the high inner wall temperature prevents fusion, and the probability of the material hanging on the wall is reduced, thereby improving the productivity and granulation quality of the material.

Description

[Technical Field]

[0001] This application incorporates the Chinese patent application entitled "Drying Apparatus and Battery Manufacturing System" filed on March 16, 2023, bearing the number 2023205036983, which is incorporated herein by reference in its entirety.

[0002] The present application relates to the technical field of drying equipment, in particular spray The present invention relates to a drying device and a battery manufacturing system. [Background technology]

[0003] Spray drying is a process in which hot air is blown into the drying tower through the tower port, contacting the atomized material and rapidly drying the moisture in the material. However, during atomization drying, the material tends to adhere to the inner wall of the drying tower, resulting in wall-hanging, which affects the productivity and granulation quality of the material. Summary of the Invention [Problem to be solved by the invention]

[0004] Based on the above, the probability of wall hanging phenomenon of material can be reduced, and the productivity and granulation quality of material can be improved. spray A drying apparatus and battery manufacturing system must be provided. [Means for solving the problem]

[0005] According to a first aspect, the present application provides a drying apparatus including a drying tower and a cooling mechanism provided in the drying tower for lowering the temperature of an inner wall of the drying tower, the cooling mechanism including a reinforcing member and a cooling member provided on an outer wall of the drying tower, and at least a portion of the reinforcing member being connected between the cooling member and the outer wall of the drying tower. [Effects of the Invention]

[0006] The drying apparatus described above is equipped with a cooling mechanism in the drying tower, which cools and lowers the temperature of the drying tower's inner wall, controlling the temperature of the drying tower's inner wall within a required temperature range. When spray drying is performed in this manner in the drying tower, the material does not adhere to the drying tower's inner wall due to its high temperature. This reduces the likelihood of the material hanging on the wall, thereby improving the material production rate and granulation quality. At the same time, a reinforcing member is provided between the cooling element and the drying tower to improve the connection strength between the two and stabilize the cooling element's mounting structure to the drying tower. This facilitates the cooling medium within the cooling element to steadily lower the temperature of the drying tower, while also reinforcing the strength of the drying tower.

[0007] In some embodiments, the cooling mechanism includes a power source and a cooling element provided on an outer wall of the drying tower, the cooling element having a cooling passage, and the power source is configured to drive a cooling medium through the cooling passage. In this manner, by driving the cooling medium through the cooling passage by the power source, heat exchange occurs between the cooling medium and the drying tower, thereby achieving the effect of lowering the temperature of the inner wall of the drying tower and reducing the occurrence of the wall hanging phenomenon of the substance.

[0008] In some embodiments, the cooling element is disposed around the outer periphery of the drying tower, and a cooling passage is formed between the cooling element and the outer wall of the drying tower. In this manner, the cooling medium flows directly through the outer wall of the drying tower, which is advantageous for improving the heat exchange effect.

[0009] In some embodiments, the cooling mechanism further includes a flow equalizer disposed around the outer periphery of the drying tower, the inlet ends of the cooling passages are connected to the flow equalizer, and the power source is used to drive the cooling medium in the flow equalizer to flow into the cooling passages. In this way, the flow equalizer is disposed at the inlet ends of the cooling passages, and the flow equalizer uniformly distributes the cooling medium through the cooling passages, thereby making the temperature distribution on the inner wall of the drying tower more uniform and further reducing the occurrence of the wall hanging phenomenon of the material, and also advantageously improving the granulation quality of the material.

[0010] In some embodiments, the reinforcing member is provided around the outer periphery of the drying tower, and a flow port through which the cooling medium of the cooling passage circulates is provided in a portion of the reinforcing member located in the cooling passage. By providing the flow port penetrating the reinforcing member in this manner, the cooling medium can smoothly flow through the cooling passage beyond the reinforcing member, thereby improving the temperature reduction effect of the drying tower.

[0011] In some embodiments, the reinforcing member is provided with one end, which is located radially away from the drying tower, penetrating the cooling member. By having one end of the reinforcing member penetrate the cooling member in this way, the connection area between the reinforcing member and the cooling member is increased, which is advantageous for reinforcing the connection strength, and at the same time, the portion of the reinforcing member that penetrates the cooling member can serve as a support base, thereby more stably attaching the cooling member to the drying tower.

[0012] In some embodiments, the drying tower has an air outlet, and the cooling element extends to a position adjacent to the air outlet on the outer wall of the drying tower. In this way, extending the cooling element to the air outlet increases the cooling temperature drop at the air outlet and reduces the blown air temperature to meet process requirements.

[0013] In some embodiments, the drying tower includes a first section and a second section having an outlet, the cross-sectional area S of the second section gradually decreases from one end of the second section close to the first section to one end of the second section having the outlet, and the cooling element is provided in the first section and extends to the second section. portion By increasing the cooling temperature drop at the drying tower and lowering the temperature of the air blown from the drying tower, the process requirements can be better met.

[0014] In some embodiments, the cooling mechanism further includes an exhaust member provided in the drying tower and having an exhaust port communicating with the cooling passage. By providing the exhaust member so that the cooling medium flows out from the exhaust port, new cooling medium can be easily continuously introduced into the cooling passage, thereby improving the temperature reduction effect of the drying tower.

[0015] In some embodiments, the number of outlets is at least two, and all of the outlets are spaced around the circumference of the drying tower. By spaced around the circumference of the drying tower, the cooling medium in the cooling passage can be advantageously directed through different outlets to change the flow path of the cooling medium in the cooling passage, resulting in more uniform distribution of the cooling medium and an improved cooling effect.

[0016] In some embodiments, the drying device further includes a heat insulating layer disposed on the outside of the cooling element, which reduces heat loss in the cooling passage and ensures sufficient heat exchange between the cooling medium and the drying tower, thereby maintaining the inner wall of the drying tower at a required temperature for a long period of time and reducing the probability of materials sticking to the wall due to excessively high inner wall temperature.

[0017] In some embodiments, the drying apparatus further includes a heat exchanger connected to one end of the cooling element through which the cooling medium flows in. In this way, heat exchange with the cooling medium is performed in advance through the heat exchanger, and the temperature of the cooling medium is changed to better meet the temperature reduction requirement of the inner wall of the drying tower.

[0018] According to a second aspect, the present application provides a battery manufacturing system including any one of the drying devices described above.

[0019] The above description is merely a summary of the technical content of the present application, and in order to make the technical means of the present application more clearly understandable, it is possible to implement the present application according to the contents of the specification, and further to make the above and other objects, features and advantages of the present application more clearly understandable, the following particularly lists embodiments for implementing the present application. [Brief explanation of the drawings]

[0020] Various other benefits and advantages will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are used only for the purpose of illustrating the preferred embodiments and are not to be considered limiting of the present application. In addition, the same elements are designated by the same reference numerals in all the drawings. In the drawings,

[0021] [Figure 1] FIG. 1 is a schematic diagram of a drying device according to one or more embodiments. [Figure 2] FIG. 2 is a schematic diagram of the structure of the reinforcing member in FIG. [Figure 3] FIG. 2 is a partially enlarged schematic view of a portion A in FIG. [Figure 4] FIG. 1 is a schematic diagram of a drying device including a heat exchanger according to one or more embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0022] Below, in combination with the drawings in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described.

[0023] It is clear that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments of the present application. All other embodiments that a person skilled in the art can obtain based on the embodiments of the present application without making any inventive efforts belong to the scope of the claims of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used herein are used only for the purpose of describing specific examples and are not intended to limit the scope of the present application. The terms "comprises," "having," and any variations thereof in the specification, claims, and drawings of the present application are intended to cover a non-exclusive inclusion.

[0025] In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used only to distinguish different objects, and are not to be understood as indicating or implying their relative importance, or as implying the number of constituent elements, a particular order, or a hierarchical relationship. In the description of the embodiments of the present application, unless otherwise clearly and specifically limited, "plurality" means two or more.

[0026] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it an independent or alternative embodiment that mutually excludes other embodiments. It should be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments of the present application, the term "and / or" is merely a relational relationship for describing related objects, and indicates that three types of relationships can exist. For example, A and / or B can indicate three cases: only A exists, A and B exist simultaneously, and only B exists. In addition, the character " / " in this specification generally indicates that the related objects before and after it are in an "or" relationship.

[0028] In describing the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple sheets" refers to two or more sheets (including two sheets).

[0029] In describing the embodiments of the present application, directions or positional relationships indicated by technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on the directions or positional relationships shown in the drawings and are intended merely to facilitate and simplify the description of the embodiments of the present application, and do not indicate or imply that the devices or elements shown necessarily have a specific orientation or must be configured or operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0030] In describing the embodiments of the present application, unless otherwise clearly specified and limited, terms such as "attached," "coupled," "connected," and "fixed" should be understood broadly, and may refer to, for example, a fixed connection, a detachable connection, or being integrated; a mechanical connection, an electrical connection; a direct connection, an indirect connection via an intermediate medium, or a communication between two members or an interaction between two elements. Those skilled in the art will be able to understand the specific meanings of the above terms in the embodiments of the present application according to specific circumstances.

[0031] Spray drying refers to the process of blowing hot air into a drying tower through the tower port and contacting it with atomized materials to rapidly dry out the moisture in the materials. During drying, as hot air continues to pass through the drying tower, the interior of the drying tower heats up, causing the temperature of the drying tower's inner wall to reach a certain temperature. For example, for temperature-sensitive materials such as nano-electric fuel, feather enzyme-digested proteins, Chinese herbal extracts, or other sugar-rich materials, when these materials come into contact with the inner wall of the drying tower, they tend to melt at high temperatures and adhere to the inner wall, resulting in the phenomenon of material sticking to the wall. As the wall sticking phenomenon increases, more material sticks to the inner wall of the drying tower, reducing the amount of material output from the drying tower, resulting in material waste and a lower product yield.

[0032] At the same time, some of the material adhering to the inner wall of the drying tower may fall off when blown by hot air. The particle size of the fallen material changes after melting and is generally larger than the particle size of the material after normal drying, so the fallen material is mixed into the dried material and affects the particle size quality of the product.

[0033] Based on this, in order to effectively reduce the probability of the material sticking to the wall and improve the productivity and granulation quality of the material, the present application has designed a drying apparatus 100, as shown in FIG. 1, in which a cooling mechanism 20 is disposed in a drying tower 10, and the cooling mechanism 20 cools and lowers the temperature of the inner wall 11 of the drying tower 10. In this way, when spray drying is performed in the drying tower 10, after the material comes into contact with the inner wall 11 of the drying tower 10, the high temperature of the inner wall 11 prevents adhesion, thereby reducing the probability of the material sticking to the wall, and thereby improving the productivity and granulation quality of the material.

[0034] At the same time, by cooling and lowering the temperature of the inner wall 11 of the drying tower 10 using the cooling mechanism 20, substances are less likely to adhere to the inner wall 11 of the drying tower 10, making the inner wall 11 of the drying tower 10 less difficult to clean. In addition, as more substances adhere to the inner wall 11 of the drying tower 10, the internal space of the drying tower 10 shrinks, reducing the granulation space and affecting the granulation effect of the equipment. Therefore, by lowering the temperature of the inner wall 11 using the cooling mechanism 20, the probability of substances adhering to the wall can be similarly reduced, the degree to which the internal space of the drying tower 10 is reduced, and the granulation effect of the equipment can be improved.

[0035] The drying apparatus 100 provided herein can be applied to the spray drying process of different materials, for example, but not limited to, the drying apparatus 100 can be applied to the spray drying process of nano-electrofuels.

[0036] According to some embodiments of the present application, with reference to Fig. 1 , the present application provides a drying apparatus 100 including a drying tower 10 and a cooling mechanism 20. The cooling mechanism 20 is provided in the drying tower 10 and serves to lower the temperature of the inner wall 11 of the drying tower 10, and the cooling mechanism 20 includes a reinforcing member 25 and a cooling member 22 provided on the outer wall of the drying tower 10, and at least a portion of the reinforcing member 25 is connected between the cooling member 22 and the outer wall of the drying tower 10.

[0037] The drying tower 10 refers to equipment for drying materials, and can pass hot air through the interior thereof to dry the atomized materials. The hot air can be transported into the drying tower 10 in a top-down manner, a bottom-up manner, or even from the side of the drying tower 10. The shape of the drying tower 10 can be designed in various ways, such as, but not limited to, a cylindrical shape, a conical shape, or a rectangular parallelepiped shape. When the drying tower 10 is designed with a tapered structure, the tapered portion can serve to collect the dried materials, facilitating the materials to be transported together.

[0038] It can be understood that the material is usually introduced into the drying tower 10 from the top or side of the drying tower 10. For example, an atomizing nozzle is provided at the top of the drying tower 10, and the material is atomized and sprayed into the drying tower 10 by the atomizing nozzle so as to come into contact with hot air.

[0039] The cooling mechanism 20 refers to equipment capable of lowering the temperature of the inner wall 11 of the drying tower 10, and there are various cooling methods for the inner wall 11 of the drying tower 10, such as air cooling, water cooling, or a Peltier sheet. The cooling mechanism 20 may also be disposed in the drying tower 10 in various ways, such as by being disposed on the outer wall of the drying tower 10 or by being embedded in the wall of the drying tower 10.

[0040] The cooling mechanism 20 may be designed as a plate-like structure, such as a water-cooled plate structure, or as a tubular structure, such as a cooling water pipe structure.

[0041] The cooling element 22 is a structure that allows the flow of the cooling medium and enables heat exchange between the cooling medium and the drying tower 10. The cooling element 22 can be designed as a hollow structure whose interior can directly serve as a cooling passage 23, or as a plate or sheet structure. In this case, a cooling passage can be formed on the outer surface of the cooling element 22. For example, a gap that can serve as a cooling passage can be formed between the cooling element 22 and the outer wall of the drying tower 10. When the cooling element 22 is designed as a hollow structure, it can be a tubular or hollow plate structure, and the tubular cooling element 22 can be wrapped around the outer wall of the drying tower 10.

[0042] The reinforcing member 25 refers to a structure connected between the cooling member 22 and the outer wall of the drying tower 10. There are various connection methods between the cooling member 22 and the drying tower 10. For example, the reinforcing member 25 can be connected between the cooling member 22 and the drying tower 10 by bolting, welding, engaging, gluing, crimping, pinning, or integral molding.

[0043] 1 is not provided so as to penetrate the drying tower 10 in the horizontal direction, but has a ring-shaped structure surrounding the outer periphery of the reinforcing member 25. Of course, the reinforcing member 25 shown in FIG. 1 is merely one embodiment and cannot be construed as limiting the scope of the present solution. For example, the reinforcing member 25 between the cooling member 22 and the drying tower 10 may have a block-shaped structure or a ring-shaped structure. When the reinforcing member 25 has a ring-shaped structure, the reinforcing member 25 is connected in the circumferential direction between the cooling member 22 and the drying tower 10. The number of reinforcing members 25 may be one or more. When there are more than one reinforcing members 25, the reinforcing member 25 is connected between the cooling member 22 and the drying tower 10. tower Regarding the distribution of all the reinforcing members 25 between the drying tower 10 and the drying tower 10, there are various designs, such as arranging some of the reinforcing members 25 at intervals along the height direction X of the drying tower 10, or arranging some of the reinforcing members 25 at intervals around the circumferential direction of the drying tower 10.

[0044] During spray drying in drying tower 10, after the material comes into contact with inner wall 11 of drying tower 10, the high temperature of inner wall 11 prevents adhesion, reducing the likelihood of wall-hanging of the material, thereby improving the productivity and granulation quality of the material. At the same time, reinforcing member 25 is provided between cooling member 22 and drying tower 10 to reinforce the connection strength between them and stabilize the mounting structure of cooling member 22 to drying tower 10, facilitating the stable cooling of drying tower 10 by the cooling medium within cooling member 22, while also advantageously reinforcing the strength of drying tower 10.

[0045] 1, according to some embodiments of the present application, the cooling mechanism 20 further includes a power source 21. The cooling member 22 has a cooling passage 23, and the power source 21 is for driving a cooling medium to flow through the cooling passage 23.

[0046] The power source 21 refers to equipment capable of supplying power to the flow of the cooling medium, and may be a blower, a power pump, or the like. When the power source 21 is a blower, the cooling medium may be air, carbon dioxide, or the like. Here, the air may be air outside the drying tower 10, and the air outside the drying tower 10 is blown in or sucked by the blower and transported to the cooling passage 23. When the power source 21 is a power pump, the cooling medium may be tap water, a glycerin-based cooling liquid, or the like.

[0047] The power of power source 21 can be set to an adjustable state, i.e., by using power source 21 as a variable frequency facility, the amount of cooling medium flowing in can be controlled (e.g., by adjusting the amount of air blown through cooling passage 23) by changing the power of power source 21 according to the temperature reduction requirement for inner wall 11 of drying tower 10. For example, a temperature monitoring device (e.g., a temperature sensor) can be installed at a certain distance from inner wall 11 of drying tower 10, and temperature changes in different areas of inner wall 11 of drying tower 10 can be detected in real time to adjust the amount of cold air passed through. Also, if too much cooling medium is passed through, condensation may occur on inner wall 11 of drying tower 10. However, by changing the frequency of power source 21, the amount of cooling medium flowing in can be reduced, thereby reducing the probability of condensation on inner wall 11.

[0048] By using the power source 21 to drive the cooling medium to flow through the cooling passage 23, heat exchange occurs between the cooling medium and the drying tower 10, which has the effect of lowering the temperature of the inner wall 11 of the drying tower 10 and reduces the occurrence of the substance hanging on the wall phenomenon.

[0049] According to some embodiments of the present application, referring to FIG. 1, the cooling member 22 is installed around the outer periphery of the drying tower 10 and forms a cooling passage 23 between the cooling member 22 and the outer wall of the drying tower 10 .

[0050] The cooling element 22 is installed around the outer periphery of the drying tower 10, and it can be understood that the cooling element 22 is surrounded by the outside of the drying tower 10 and there is a certain gap between the cooling element 22 and the outer wall of the drying tower 10. By directly using this gap as a cooling passage 23, the cooling medium and the outer wall of the drying tower 10 come into direct contact with each other, thereby improving the heat exchange effect.

[0051] At the same time, the cooling element 22 is installed around the outside of the drying tower 10, and there are various methods for fixing it. For example, the cooling element 22 is fixed to the outer wall of the drying tower 10 by bolting, welding, engaging, crimping, etc.

[0052] By surrounding the cooling element 22 outside the drying tower 10, a cooling passage 23 is formed between the cooling element 22 and the drying tower 10, so that the cooling medium flows directly along the outer wall of the drying tower 10, which is advantageous in improving the heat exchange effect.

[0053] 1 , according to some embodiments of the present application, the cooling mechanism 20 further includes a flow equalizer 26 installed around the outer periphery of the drying tower 10. The inlet end of the cooling passage 23 is connected to the flow equalizer 26, and the power source 21 drives the cooling medium in the flow equalizer 26 to flow into the cooling passage 23.

[0054] The flow equalizer 26 refers to a device that uniformly distributes the cooling medium and allows the cooling medium to flow relatively uniformly into the cooling passage 23. When the cooling medium enters the flow equalizer 26 due to the action of the power source 21, the flow equalizer 26 is configured to be installed around the outer periphery of the drying tower 10, so that the entering cooling medium flows around the outer periphery of the drying tower 10 within the flow equalizer 26, and the cooling medium is dispersed before entering the cooling passage 23. Specifically, in some embodiments, the flow equalizer 26 may be designed as a ring-shaped hollow box structure.

[0055] The inlet end of the cooling passage 23 refers to the end of the cooling passage 23 where the cooling medium begins to flow in. Since the cooling passage 23 is formed by the cooling element 22 and arranged around the outer periphery of the drying tower 10, the inlet end of the cooling passage 23 also has an annular or nearly annular shape. If the inlet end of the cooling passage 23 is connected to the flow equalizer 26, it can be understood that the inlet end of the cooling passage 23 and the flow equalizer 26 should be connected in an annular shape, that is, the communication ports between the cooling passage 23 and the flow equalizer 26 are arranged around the outer periphery of the drying tower 10. In this way, the cooling medium filled in the flow equalizer 26 flows into the cooling passage 23 synchronously in different directions, so that the cooling medium is uniformly distributed within the cooling passage 23.

[0056] When the power source 21 is a blowing-type equipment, the power source 21 can be connected to the cooling passage 23 via the flow equalizer 26; when the power source 21 is a suction-type equipment, the flow equalizer 26 is connected to the inlet end of the cooling passage 23, and the power source 21 is connected to the outlet end of the cooling passage 23.

[0057] A flow equalizer 26 is provided at the inlet end of the cooling passage 23, and the flow equalizer 26 distributes the cooling medium evenly throughout the cooling passage 23, thereby making the temperature distribution on the inner wall 11 of the drying tower 10 more uniform and further reducing the occurrence of the material hanging on the wall, which is also advantageous in improving the granulation quality of the material.

[0058] According to some embodiments of the present application, with reference to FIG. 1 , the cooling mechanism 20 further includes a reinforcing member 25 at least partially connected between the cooling member 22 and the outer wall of the drying tower 10 .

[0059] In some embodiments of the present application, referring to FIG. 2, the reinforcing member 25 is provided around the outer periphery of the drying tower 10, and a flow port 251 through which the cooling medium of the cooling passage 23 flows is provided in the portion of the reinforcing member 25 located in the cooling passage 23.

[0060] The reinforcing member 25 can extend around the outer periphery of the drying tower 10 to form a ring-shaped structure, and since the reinforcing member 25 is located between the cooling member 22 and the drying tower 10, the ring-shaped reinforcing member 25 obstructs the flow of the cooling medium to some extent. To ensure a smooth flow of the cooling medium, the reinforcing member 25 has a flow port 251 penetrating therethrough, which allows the cooling medium to flow through the cooling passage 23 beyond the reinforcing member 25.

[0061] The number of flow ports 251 in the same reinforcing member 25 may be one or more. When the number of flow ports 251 is more than one, all of the flow ports 251 are arranged at intervals around the outer periphery of the drying tower 10 on the reinforcing member 25.

[0062] A flow port 251 is provided through the reinforcing member 25 so that the cooling medium can smoothly flow through the cooling passage 23 over the reinforcing member 25, thereby improving the temperature lowering effect of the drying tower 10.

[0063] According to some embodiments of the present application, referring to FIG. 3, the reinforcing member 25 is provided so that one end thereof farther from the drying tower 10 in the radial direction of the drying tower 10 penetrates the cooling member 22.

[0064] One end of the reinforcing member 25 penetrating the cooling member 22 should be understood to mean that one end of the reinforcing member 25 is fitted into the cooling member 22 and protrudes from the cooling member 22. When one end of the reinforcing member 25 penetrates the cooling member 22, it is necessary to seal the portion of the reinforcing member 25 penetrating the cooling member 22, for example, by welding between the cooling member 22 and the reinforcing member 25 or by applying a sealant. When a thermal insulation structure is provided outside the cooling member 22, the one end of the reinforcing member 25 remote from the drying tower 10 may penetrate the thermal insulation structure while penetrating the cooling member 22. Furthermore, when the reinforcing member 25 is designed to have a ring-shaped structure, the one end of the reinforcing member 25 remote from the drying tower 10 may be understood to be the outer end of the ring-shaped structure.

[0065] By passing one end of the reinforcing member 25 through the cooling member 22, the connection area between the reinforcing member 25 and the cooling member 22 is increased, which is advantageous for reinforcing the connection strength. In addition, the part of the reinforcing member 25 that is inserted into the cooling member 22 can serve as a support base, allowing the cooling member 22 to be attached more stably to the drying tower 10.

[0066] According to some embodiments of the present application, the drying tower 10 has an outlet 12. The cooling element 22 extends to a position adjacent to the outlet 12 on the outer wall of the drying tower 10.

[0067] During drying, control of the intake and outlet temperatures of the hot air is very important as they determine the quality and dry bulk density of the product, so these two temperatures must be strictly controlled. By extending the cooling element 22 to the outlet 12, i.e., by extending the cooling passage to the outlet 12, the cooling temperature drop at the outlet 12 can be increased and the outlet temperature can be lowered to meet the process requirements.

[0068] The cooling element 22 is extended to the outlet 12, the cooling temperature drop at the outlet 12 is increased, and the blown air temperature is lowered to meet the process requirements.

[0069] 1 , according to some embodiments of the present application, a drying tower 10 includes a first section 13 and a second section 14 having an outlet 12. A cross-sectional area S within the second section 14 gradually decreases from one end of the second section 14 close to the first section 13 to one end of the second section 14 having the outlet 12, and a cooling member 22 is provided in the first section 13 and extends to the second section 14.

[0070] Second portion The fact that the cross-sectional area S of the air passage 12 becomes smaller as it approaches the outlet 12 is due to the second portion This shows that the structure of the second portion The taper design makes it easier to discharge dry materials together.

[0071] By extending the cooling element 22 to the second portion 14, the cooling temperature drop in the second element can be increased, and the temperature of the air sent from the drying tower 10 can be lowered to better meet the requirements of the process.

[0072] 1, according to some embodiments of the present application, the cooling mechanism 20 further includes a discharge member 24 provided in the drying tower 10. The discharge member 24 has a discharge port 241 communicating with the cooling passage 23.

[0073] The discharge member 24 may be provided at the top or bottom of the drying tower 10. When the discharge member 24 is provided at the top of the drying tower 10, the cooling medium can be introduced from the bottom of the drying tower 10, and the cooling medium flows from bottom to top. Here, the top and bottom of the drying tower 10 can be understood to mean, for example, that the higher end of the drying tower 10 in the vertical direction is the top and the lower end is the bottom when the drying tower 10 is operating normally.

[0074] The method of attaching the discharge member 24 to the drying tower 10 may be, but is not limited to, bolting, engaging, caulking, welding, or adhesive. There are various methods for connecting the discharge outlet 241 and the cooling passage 23. For ease of understanding, let us take the case where the discharge member 24 is installed at the top of the drying tower 10 as an example. The discharge member 24 can be installed at a distance from the top of the drying tower 10 so as to form a passage between the discharge member 24 and the top of the drying tower 10. Next, the cooling member 22 is connected to the outer periphery of the discharge member 24, surrounding it, thereby forming an integrated lid or cover structure between the discharge member 24 and the cooling member 22. When the cooling member 22 is directly attached to the exterior of the drying tower 10, the cooling passage 23 on the cooling member 22 communicates with the passage between the discharge member 24 and the top of the drying tower 10. Alternatively, the discharge member 24 can be installed by covering the top of the drying tower 10, and then the cooling member 22 can be installed around the side of the drying tower 10, with one end of the cooling member 22 extending to surround the outer periphery of the discharge member 24. In this case, the discharge member 24 may have an opening communicating with its own interior (in this case, the discharge member 24 may have a hollow structure), and the opening communicates with the cooling passage 23 between the cooling member 22 and the drying tower 10, thereby maintaining communication between the cooling passage 23 and the discharge port 241. Specifically, in some embodiments, the discharge member 24 and the cooling member 22 have an integral structure and are integrally attached to the outer wall of the drying tower 10. Furthermore, when the discharge member 24 is provided at the top of the drying tower 10, it can serve as a support for equipment, for example, to support the installation of a spray head for the drying tower 10 or to allow maintenance personnel to climb to the top of the tower to perform maintenance.

[0075] By providing the discharge member 24 so that the cooling medium flows out from the discharge port 241, new cooling medium tends to continue to flow into the cooling passage 23, thereby improving the temperature lowering effect of the drying tower 10.

[0076] According to some embodiments of the present application, with reference to FIG. 1, the number of outlets 241 is at least two, and all of the outlets 241 are spaced around the circumference of the drying tower 10 .

[0077] The number of outlets 241 and the spacing between two adjacent outlets 241 can be determined according to the actual temperature reduction requirements and are not particularly limited herein. At the same time, when the outlets 241 are spaced around the circumference of the drying tower 10, the outlets 241 may be arranged around the circumference, or multiple outlets 241 distributed vertically around the circumference may be arranged. Specifically, in some embodiments, the outlets 241 may be distributed at equal intervals around the circumference of the drying tower 10 on the discharge member 24 so as to more uniformly discharge the cooling medium.

[0078] If the outlets 241 are arranged at intervals around the circumference of the drying tower 10 so that the cooling medium in the cooling passage 23 flows out from different outlets 241, this is advantageous in changing the flow path of the cooling medium in the cooling passage 23, making the distribution of the cooling medium more uniform and improving the temperature-reducing effect.

[0079] According to some embodiments of the present application, referring to FIG. 1, the drying apparatus 100 further includes a thermal insulation layer 30 wrapped around the outside of the cooling member 22 .

[0080] The thermal insulation layer 30 refers to a structure that can reduce the rate of heat transfer, and examples thereof include, but are not limited to, an asbestos layer, a silicate layer, a rock wool layer, an expanded perlite layer, etc. The thermal insulation layer 30 may be connected to the cooling member 22 in various ways, such as, but not limited to, bolting, adhesive bonding, welding, engagement, etc.

[0081] By providing a heat insulating layer 30 outside the cooling member 22 and reducing heat loss in the cooling passage 23, heat exchange between the cooling medium and the drying tower 10 is sufficiently achieved, thereby maintaining the inner wall 11 of the drying tower 10 at a required temperature for a long period of time and reducing the probability of substances sticking to the wall due to the temperature of the inner wall 11 being too high.

[0082] According to some embodiments of the present application, and referring to FIG. 4, the drying apparatus 100 further includes a heat exchanger 40 in communication with one end of the cooling member 22 through which the cooling medium flows.

[0083] The heat exchanger 40 refers to equipment capable of exchanging heat with the cooling medium, and may be designed with a structure such as a heat dissipation fin. When the temperature of the cooling medium (e.g., room temperature air) does not meet the temperature reduction requirement, the heat exchanger 40 can be connected to the input end of the cooling passage 23 to lower the temperature of the cooling medium. When the power source 21 is a blower, the heat exchanger 40 can be connected between the power source 21 and one end of the cooling member 22 into which the cooling medium flows. When a flow equalizer 26 is connected to one end of the cooling member 22 into which the cooling medium flows, the heat exchanger 40 can be connected to one end of the cooling member 22 via the flow equalizer 26.

[0084] The heat exchanger 40 exchanges heat with the cooling medium in advance, and changes the temperature of the cooling medium, so as to better satisfy the requirement for lowering the temperature of the inner wall 11 of the drying tower 10.

[0085] According to some embodiments of the present application, the present application provides a battery manufacturing system including the drying apparatus 100 according to any one of the above.

[0086] 1 to 4 , the present application provides a drying apparatus 100 in which a cooling element 22 is provided between a drying tower 10 and a thermal insulation layer 30, and room-temperature air, which is lower in temperature than the drying tower 10, is blown from the bottom of the cooling element 22 to pass through to lower the temperature of the inner wall 11. The thermal insulation layer 30 is provided outside the cooling element 22 to maintain the inner wall 11 at a required temperature for a long period of time and prevent materials from melting when they come into contact with the inner wall 11. Additionally, several annular reinforcing elements 25 are welded between the drying tower 10 and the cooling element 22. A power source 21 (e.g., a fan) is attached to the bottom of the drying tower 10, and room-temperature air is sucked into and sent through a cooling passage 23, which passes through a flow port 251 on the reinforcing element 25 to the top of the drying tower 10, and an outlet 241 is provided at the top for discharging the hot air.

[0087] Finally, it should be noted that the above embodiments are merely intended to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified or some or all of the components therein may be equivalently replaced. These modifications or replacements should not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application and should be included in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the components referred to in the embodiments may be combined in any manner. The present application is not limited to the specific embodiments disclosed herein and includes all technical solutions falling within the scope of the claims.

[0088] The components of the above-described embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations of the components in the above-described embodiments will be described. However, as long as there is no contradiction in the combination of these components, it should be considered to be within the scope described in this specification.

[0089] The above-described examples only illustrate some embodiments of the present application, and the descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the patent application. Those skilled in the art may make modifications and improvements without departing from the spirit of the present application, which fall within the scope of the present application. Therefore, the scope of the present application should be determined based on the scope of the appended claims. [Explanation of symbols]

[0090] 100 drying device; 10 drying tower; 11 inner wall; 12 outlet; 13 first part; 14 second part; 20 cooling mechanism; 21 power source; 22 cooling element; 23 Cooling passage; 24 Discharge member; 241 Discharge port; 25 Reinforcement member; 251 Distribution port; 26 Flow equalizer; 30 Heat insulation layer; 40 Heat exchanger;

Claims

1. A drying tower (10) having an outlet (12) in which hot air is blown in from the outlet (12) to come into contact with the atomized material and dry it; a cooling mechanism (20) provided in the drying tower (10) for lowering the temperature of an inner wall (11) of the drying tower (10), the cooling mechanism (20) includes a reinforcing member (25) and a cooling member (22) provided on the outer wall of the drying tower (10), and at least a portion of the reinforcing member (25) is connected between the cooling member (22) and the outer wall of the drying tower (10); The cooling member (22) extends to a position adjacent to the outlet (12) on the outer wall of the drying tower (10). Spray drying equipment.

2. The cooling mechanism (20) further includes a power source (21), the cooling member (22) includes a cooling passage (23), and the power source (21) is for driving a cooling medium to flow through the cooling passage (23). The spray drying apparatus of claim 1.

3. The cooling member (22) is provided around the outer periphery of the drying tower (10) and forms the cooling passage (23) between itself and the outer wall of the drying tower (10). The spray drying apparatus according to claim 2.

4. The cooling mechanism (20) further includes a flow equalizer (26) disposed around the outer periphery of the drying tower (10), the inlet end of the cooling passage (23) is connected to the flow equalizer (26), and the power source (21) drives the cooling medium in the flow equalizer (26) to flow into the cooling passage (23). The spray drying apparatus according to claim 3.

5. The reinforcing member (25) is provided around the outer periphery of the drying tower (10), and a flow port (251) through which a cooling medium of the cooling passage (23) flows is provided in a portion of the reinforcing member (25) located in the cooling passage (23). The spray drying apparatus according to claim 2.

6. The reinforcing member (25) is provided so that one end thereof, which is far from the drying tower (10) in the radial direction of the drying tower (10), penetrates the cooling member (22). The spray drying apparatus of claim 1.

7. The drying tower (10) includes a first portion (13) and a second portion (14) having the air outlet (12), and the cross-sectional area S in the second portion (14) gradually decreases from one end of the second portion (14) close to the first portion (13) toward the one end of the second portion (14) having the air outlet (12), and the cooling member (22) is provided in the first portion (13) and extends to the second portion (14). The spray drying apparatus of claim 1.

8. The cooling mechanism (20) further includes a discharge member (24) provided in the drying tower (10) and having a discharge port (241) communicating with the cooling passage (23). A spray drying apparatus according to any one of claims 2 to 5.

9. The number of the outlets (241) is at least two, and all of the outlets (241) are arranged at intervals around the periphery of the drying tower (10). The spray drying apparatus according to claim 8.

10. The cooling member (22) further includes a heat insulating layer (30) that is wrapped around the outside of the cooling member (22). A spray drying apparatus according to any one of claims 1 to 7.

11. Cooling medium in the cooling member (22) The heat exchanger (40) is connected to one end into which the A spray drying apparatus according to any one of claims 1 to 7.

12. A battery manufacturing system comprising the spray drying apparatus according to any one of claims 1 to 7, wherein the spray drying apparatus dries nano-electric fuel for battery manufacturing.

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