Coating equipment and coating system

Abstract

The utility model provides coating equipment and a coating system. The coating equipment comprises a base, a mixing bin, a material bin and a rotating piece. The mixing bin is arranged on the base and provided with a mixing space, the mixing bin is further provided with a first feeding port and a second feeding port, the first feeding port is used for feeding a coating agent, and the second feeding port is used for feeding a to-be-coated material. The material bin is communicated with the mixing space and used for containing the coating materials, and the rotating piece is arranged in the mixing space and used for mixing the materials. The rotating part is arranged in the mixing bin, the material bin is arranged on the side, away from the base, of the mixing bin, and when the rotating part runs, rotating airflow can be generated, so that the coating agent in the mixing bin is mixed with the to-be-coated material, and meanwhile the mixed material is conveyed into the material bin; and synchronous mixing and output of the coating agent and the material to be coated are realized.

Description

Technical Field

[0001] The present application belongs to the technical field of material preparation, and specifically relates to coating equipment and coating systems. Background Art

[0002] Graphite is the mainstream negative electrode material in the current production of lithium-ion batteries. The industry usually coats the graphite surface with soft carbon or hard carbon to reduce the impedance in the battery to achieve fast charging, but the coating effect of current coating equipment is poor. Utility Model Content

[0003] In view of this, the first aspect of the present application provides a coating device, the coating device comprising:

[0004] Pedestal;

[0005] A mixing bin is provided on the base, the mixing bin is provided with a mixing space, the mixing bin is provided with a first feed inlet and a second feed inlet communicating with the mixing space, the first feed inlet is used for introducing a liquid coating agent, and the second feed inlet is used for introducing a material to be coated;

[0006] an atomizing nozzle, disposed in the first feed port, and used for atomizing the liquid coating agent;

[0007] A rotating member is disposed in the mixing space, and is used to disperse the material to be coated, so that the atomized coating agent coats the dispersed material to be coated to obtain a coated material, and the coated material is transported in a direction away from the base;

[0008] A material bin is connected to the mixing space and is used to accommodate the coating material.

[0009] The coating equipment provided in the first aspect of the present application allows the material to be coated and the liquid coating agent to enter from the first feed port and the second feed port respectively, so as to facilitate the subsequent treatment of the material to be coated and the liquid coating agent respectively, thereby providing a basis for improving the coating effect. In addition, by providing a rotating part in the mixing bin, the material to be coated can be highly dispersed by the rotating part, so that the large particles after coating can be broken up into qualified coating materials. Subsequently, an atomizing nozzle can be provided in the first feed port, and the liquid coating agent can be atomized by the atomizing nozzle, so that the large droplets of coating agent can be dispersed into fine particles of coating agent.

[0010] In summary, the present application allows the material to be coated and the liquid coating agent to enter from different feed ports and are subsequently refined separately. Compared with the related art of simply mixing the material to be coated and the liquid coating agent, the present application can mix the material to be coated and the refined coating agent, effectively increasing the contact area and the uniformity of the coating, thereby improving the coating effect.

[0011] Among them, the atomizing nozzle includes a shell, one end of the shell is provided with a liquid inlet and an air inlet, and the other end is provided with a first air outlet, the liquid inlet is used to pass the liquid coating agent, the air inlet is used to pass the atomizing gas, the atomizing gas is used to mix with the liquid coating agent and atomize the liquid coating agent, and the first air outlet is used to output the atomized coating agent.

[0012] Wherein, a stirring chamber connected to the liquid inlet is provided in the shell, and the atomizing nozzle further comprises a stirring member, and the stirring member is used for stirring the liquid coating agent, so as to disperse the liquid coating agent.

[0013] Wherein, an accelerating air passage connected to the air inlet is provided in the shell, and the diameter of the accelerating air passage gradually decreases from the direction close to the air inlet to the direction away from the air inlet, thereby accelerating the atomized gas.

[0014] Wherein, a mixing chamber communicating with the accelerating airway and the stirring chamber is provided in the shell, and the mixing chamber is used to mix the dispersed liquid coating agent with the accelerated atomizing gas and atomize the coating agent.

[0015] Among them, the shell is also provided with a bypass airway connected to the acceleration airway, and part of the atomizing gas can enter the bypass airway; the atomizing nozzle also includes a nozzle arranged on the first air outlet of the shell, and the nozzle and the shell are surrounded to form a second air outlet connected to the bypass airway, and the atomizing gas sprayed from the second air outlet is used to further atomize the atomized coating agent sprayed from the first air outlet.

[0016] Wherein, the shell is provided with two air inlets and two accelerating air passages which are symmetrically distributed relative to the liquid inlet.

[0017] Among them, the warehouse wall of the mixing warehouse is provided with at least one mounting hole along its circumferential direction, and the at least one mounting hole connects the first feed port and the mixing space. Each of the first feed ports is provided with an atomizing nozzle, and the mounting hole is inclined at 30°-60° so that the atomizing nozzle can spray the atomized coating agent along the inner side surface of the warehouse wall.

[0018] The coating material transported to the material bin can be used for synchronous transport to the dust removal equipment.

[0019] Wherein, the material bin is arranged on a side of the mixing bin away from the base.

[0020] Among them, the coating equipment also includes an air volume bin arranged between the base and the mixing bin, the air volume bin connects the second feed port and the mixing space, and the air volume bin is used to assist the material to be coated entering from the second feed port to enter the mixing space more.

[0021] A second aspect of the present application provides a coating system, including the coating device provided in the first aspect of the present application.

[0022] The coating system provided in the second aspect of the present application can improve the coating effect by adopting the coating equipment provided in the first aspect of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the implementation modes of the present application, the drawings required for use in the implementation modes of the present application will be described below.

[0024] Figure 1 It is a cross-sectional view of a coating device in one embodiment of the present application.

[0025] Figure 2 It is a cross-sectional view of an atomizing nozzle in one embodiment of the present application.

[0026] Figure 3 for Figure 2 A side view of the atomizing nozzle is shown.

[0027] Figure 4 It is a cross-sectional view of the wall of the mixing bin in one embodiment of the present application.

[0028] Description of labels:

[0029] Coating equipment 1, base 10, motor 11, mixing bin 20, mixing space 200, first feed inlet 21, second feed inlet 22, blast port 23, air volume bin 24, center hole 25, bin wall 26, mounting hole 27, material bin 30, rotating part 40, atomizing nozzle 50, liquid inlet 51, air inlet 52, first air outlet 521, second air outlet 522, stirring chamber 53, stirring part 530, accelerating airway 54, mixing chamber 55, nozzle 56, diversion airway 57. DETAILED DESCRIPTION

[0030] The following are preferred implementations of the present application. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

[0031] Graphite, the negative electrode material of lithium batteries, has the advantages of high initial efficiency, low expansion, and low potential. It is the mainstream negative electrode material in the current industrial production of lithium-ion batteries. As the new energy market continues to develop in the direction of high power and fast charging, the impedance of negative electrode materials has become the main bottleneck faced by the design of high-power and fast charging performance of battery cells. In order to break through the mileage anxiety of energy density and the safety hazards brought by high-power fast charging, and to achieve the design goals of impedance reduction and fast charging, the current new energy field mainly focuses on the selection of coke raw materials, the control of coke crushing particle size, and the surface amorphous carbon coating modification. The resistance of the negative electrode material of the battery consists of three parts: the first part is the electrochemical conversion reaction resistance of lithium ions at the interface of the negative electrode material particles; the second part is the diffusion resistance of lithium ions in the structure of the negative electrode material; and the third part is the ohmic resistance of the negative electrode material itself. At present, the industry mainly reduces the resistance of the electrochemical conversion reaction by coating soft carbon or hard carbon on the surface of the material. However, the existing coating equipment is to pass the material to be coated and the coating agent through a feed port and simply mix them, resulting in poor coating effect.

[0032] In view of this, in order to solve the above problems, the present application provides a coating device. Figure 1 , Figure 1 It is a cross-sectional view of a coating device in one embodiment of the present application. The coating device 1 provided in this embodiment includes a base 10, a mixing bin 20, an atomizing nozzle 50, a rotating member 40, and a material bin 30. The mixing bin 20 is arranged on the base 10, and the mixing bin 20 is provided with a mixing space 200. The mixing bin 20 is provided with a first feed port 21 and a second feed port 22 connected to the mixing space 200. The first feed port 21 is used to pass a liquid coating agent, and the second feed port 22 is used to pass a material to be coated. The atomizing nozzle 50 is arranged in the first feed port 21, and the atomizing nozzle 50 is used to atomize the liquid coating agent. The rotating member 40 is arranged in the mixing space 200, and is used to disperse the material to be coated, so that the atomized coating agent coats the dispersed material to be coated to obtain the coated material, and the coated material is transported in a direction away from the base 10; the material bin 30 is arranged on the side of the mixing bin 20 away from the base 10, and the material bin 30 is connected to the mixing space 200 and is used to accommodate the coating material.

[0033] The coating device 1 provided in this embodiment coats the coating agent on the surface of the material to be coated, so that the material to be coated and the coating agent are mixed, thereby improving the various properties of the material to be coated. The coating device 1 can be applied to various fields, and this embodiment is only schematically illustrated by applying the coating device 1 to the field of lithium-ion batteries. Optionally, the material to be coated includes but is not limited to the positive electrode material of the lithium-ion battery or the negative electrode material of the lithium-ion battery. Further optionally, the negative electrode material of the lithium-ion battery can be artificial graphite. Optionally, the second feed port 22 can also pass hot air so that the material to be coated enters the mixing bin 20, and the hot air flow can remove part of the solvent of the material to be coated. Further optionally, a blast port 23 can be opened in the mixing bin 20, and a blower is set at the blast port 23 to pass gas, so that the material to be coated enters the mixing space 200 through the air volume bin 24. In addition, an induced draft fan can be set on the coating device 1 or subsequent equipment, and the negative pressure generated by the suction of the induced draft fan is used to continuously drive the movement direction of each material.

[0034] Optionally, the liquid coating agent includes but is not limited to ethylene cracking tar stripping byproducts, in other words, it can be a mixture of heterocyclic aromatic hydrocarbons, ketones, hydrocarbons, THF or NMP dissolved asphalt, heavy oil or one or more. Further optionally, the introduced liquid coating agent can be a heated liquid coating agent, which can increase the temperature in the mixing bin 20, so that the material to be coated and the coating agent are mixed within a certain temperature range, which can remove part of the solvent and improve the coating effect.

[0035] The base 10 is used to carry other parts of the coating device 1, and the mixing bin 20 is used to mix materials. The mixing bin 20 is arranged on the base 10, and a mixing space 200 is provided in the mixing bin 20. The mixing space 200 is a space for mixing the material to be coated with the liquid coating agent. Mixing is to stir different types of materials or unevenly distributed materials, so as to achieve uniform distribution of particles of different types of materials and the same material. The mixing bin 20 is provided with a first feed port 21 and a second feed port 22. It can be understood that the first feed port 21 is provided on one side of the bin wall 26 of the mixing bin 20, and the first feed port 21 is used to pass the coating agent so that the coating agent enters the mixing space 200. The other side of the bin wall 26 of the mixing bin 20 also includes a second feed port 22, and the second feed port 22 is used to pass the material to be coated so that the material to be coated enters the mixing space 200, so that the material to be coated and the coating agent are mixed. Optionally, the first feed port 21 is disposed close to the base 10 to facilitate coating of the coating agent on the material to be coated.

[0036] The rotating member 40 is a part that can rotate around its own center. The rotating member 40 includes a stator and a rotor, wherein the stator is fixedly connected to the inner wall surface of the mixing bin 20, and the rotor is rotatably connected to the motor, and the motor 11 drives the rotor to rotate relative to the stator. Optionally, the rotor includes but is not limited to a toothed multi-impeller rotor. In this case, the coating device 1 can also be referred to as a toothed multi-impeller rotor coating device 1. The rotor is arranged in the mixing space 200 of the mixing bin 20. When the mixing space 200 is provided with a material to be coated, the material to be coated can be evenly dispersed by the rotation of the rotor. For example, under the action of centrifugal force, the material to be coated forms a vortex dispersion at the edge of the toothed multi-impeller rotor. When the rotation speed is fast, the rotating member 40 generates a rotating airflow, which can drive the material to be coated and the coating agent in the mixing bin 20 to be evenly distributed in the mixing space 200, and mixed under the action of the rotating airflow. In addition, during the high-speed rotation of the continuously modified graphite, under the action of centrifugal force, the coarse materials are impacted at the edge of the toothed multi-impeller rotor and the high-speed airflow of the atomizing nozzle 50 to form fine particles, thereby reducing the agglomeration of the materials. In addition, the rotating member 40 is also used to make the coated material move in a direction away from the base 10 through the central hole 25 in the mixing bin 20 under the action of centrifugal force, that is, move from bottom to top, so that the coated material is drawn into the material bin 30.

[0037] The atomizing nozzle 50 can be arranged in the first feed port 21 and used to atomize the liquid coating agent, in other words, to disperse the large droplets of the liquid coating agent into the atomized coating agent of fine size particles, so that the coating agent of fine particles after atomization is passed into the mixing space 200. In this way, the atomized coating agent can be evenly sprayed on the moving material to be coated, and the material to be coated is mixed with the refined coating agent, which effectively increases the contact area and the uniformity of coating, thereby improving the coating effect and increasing the production capacity.

[0038] The material bin 30 is used to receive the coated material after the coating is completed, that is, the material bin 30 is used to receive the mixed product of the coating agent and the material to be coated. The material bin 30 is arranged on the side of the mixing bin 20 away from the base 10, that is, the material bin 30 is arranged on the upper side of the mixing bin 20. The material bin 30 is connected to the mixing bin 20, so that the mixed coating material can be transported to the material bin 30. The material bin 30 is used to connect to subsequent processing equipment, such as dust removal equipment, so that the coating material can be processed in the subsequent process. Optionally, a grading wheel can also be arranged in the material bin 30.

[0039] In summary, the present embodiment allows the material to be coated and the liquid coating agent to enter from different feed ports to achieve uniform feeding, and the modification uniformity is improved. Subsequent refinement is performed. Compared with the related art in which the material to be coated and the liquid coating agent are simply mixed, the present application allows the refined material to be coated to be mixed with the refined coating agent, effectively increasing the contact area and the uniformity of the coating, thereby improving the coating effect.

[0040] In this embodiment, the coating equipment 1 also includes an air volume bin 24 arranged between the base 10 and the mixing bin 20, and the air volume bin 24 connects the second feed port 22 and the mixing space 200. The air volume bin 24 is used to assist the material to be coated entering from the second feed port 22 to enter the mixing space 200 more.

[0041] In addition to the above components, the coating device 1 can also be equipped with an air volume bin 24, which is arranged between the base 10 and the mixing bin 20, and the air volume bin 24 is connected to the second feed port 22 and the mixing space 200. In other words, after the material to be coated passes through the second feed port 22, it can be blown into the air volume bin 24 under the action of the blower on the blast port 23, and then enter the mixing space 200 in the mixing bin 20 through the air volume bin 24, so as to be dispersed and mixed. The air volume bin 24 has a valve connected to the mixing space 200, and the valve port size of the valve is adjustable, so as to control the amount of gas entering the mixing space 200, so as to allow more material to be coated to enter the mixing space 200.

[0042] It can also be understood that when the air volume bin 24 is not provided, when the material to be coated enters the mixing bin 20, part of the material to be coated will be deposited and cannot enter the mixing bin 20, that is, material accumulation occurs. In this embodiment, the air volume bin 24 is added to assist more material to be coated to enter the mixing space 200, thereby reducing the generation of material accumulation.

[0043] Please refer to Figure 1 and Figure 2 , Figure 2 The cross-sectional view of the atomizing nozzle in one embodiment of the present application. In this embodiment, the atomizing nozzle 50 includes a shell, one end of which is provided with a liquid inlet 51 and an air inlet 52, and the other end is provided with a first air outlet 521, the liquid inlet 51 is used to pass the liquid coating agent, the air inlet 52 is used to pass the atomizing gas, the atomizing gas is used to mix with the liquid coating agent and atomize the liquid coating agent, and the first air outlet 521 is used to output the atomized coating agent.

[0044] The atomizing nozzle 50 includes a shell, one end of which may be provided with a liquid inlet 51 and an air inlet 52, and the other end of the shell may be provided with a first air outlet 521. The liquid inlet 51 is used to introduce the liquid coating agent, and the air inlet 52 is used to introduce an atomizing gas. Optionally, the atomizing gas includes but is not limited to nitrogen, helium, etc. The atomizing gas is used to mix with the liquid coating agent and atomize the liquid coating agent, thereby reducing the size of the coating agent. In other words, atomization is the process of dispersing the liquid into tiny droplets by air flow, and the liquid coating agent cooperates with the atomizing gas in the atomizing nozzle 50 to disperse into a coating agent of liquid small particles. The first air outlet 521 is connected to the receiving space, so the coating agent atomized by the atomizing nozzle 50 can be output to the receiving space through the first air outlet 521.

[0045] Optionally, heated atomizing gas can be introduced, which can facilitate the atomization of the liquid coating agent on the one hand, and effectively remove the solvent and volatile components of the coating agent on the other hand, thereby facilitating further granulation and carbonization, reducing production costs. In addition, the introduction of hot air flow can also reduce the kinematic viscosity of the coating agent. The modified material is put into the converter for calcination again, which can further increase the uniformity of mixing while also removing the volatile components of the coating agent, thereby ensuring the compaction of the negative electrode material and improving the fast charging performance of the negative electrode material.

[0046] In this embodiment, a stirring chamber 53 connected to the liquid inlet 51 is provided in the shell, and the atomizing nozzle 50 further includes a stirring member 530, and the stirring member 530 is used to stir the liquid coating agent, so as to disperse the liquid coating agent.

[0047] In addition to the above components, the atomizing nozzle 50 may be further provided with a stirring member 530, which may be arranged in the stirring chamber 53, and the stirring chamber 53 is connected to the liquid inlet 51, so that the introduced liquid coating agent can first enter the stirring chamber 53 through the liquid inlet hole, and the stirring member 530 can stir the liquid coating agent, so that the liquid coating agent is initially dispersed after being rotated and crushed through the spiral flow channel, and then dispersed and accelerated, which can reduce the difficulty of atomization when cooperating with the atomizing gas later. Optionally, the stirring member 530 includes but is not limited to a spiral stirring blade.

[0048] In this embodiment, an accelerating air passage 54 connected to the air inlet 52 is disposed in the shell, and the diameter of the accelerating air passage 54 gradually decreases from the direction close to the air inlet 52 to the direction away from the air inlet 52, thereby accelerating the atomized gas.

[0049] After entering the air inlet 52, the atomizing gas may first enter the accelerating air passage 54. Along the flow direction of the atomizing gas, i.e., from the direction close to the air inlet 52 to the direction away from the air inlet 52, the diameter of the accelerating air passage 54 gradually decreases. In other words, the accelerating air passage 54 gradually narrows, so that when the intake volume of the atomizing gas remains unchanged, as the diameter of the flow passage gradually decreases, the flow rate of the atomizing gas gradually increases, thereby increasing the gas phase kinetic energy and fully enhancing the subsequent impact atomization effect. At this time, the accelerating air passage 54 can also be called a reduction tube.

[0050] In this embodiment, a mixing chamber 55 connecting the accelerating airway 54 and the stirring chamber 53 is provided in the shell. The mixing chamber 55 is used to mix the dispersed liquid coating agent with the accelerated atomizing gas and atomize the coating agent.

[0051] Since the mixing chamber 55 is connected to the accelerating airway 54 and the stirring chamber 53, the discrete liquid coating agent and the accelerated atomizing gas can be mixed in the mixing chamber 55. At this time, the discrete accelerated liquid coating agent is atomized by gas-liquid two-phase impact with the high-speed atomizing gas in the mixing chamber 55, and the kinetic energy of the high-speed atomizing gas is used to break up the liquid phase, so that the atomizing gas in the mixing chamber 55 can be fully mixed with the liquid coating agent to initially form a good atomizing flow, so that the coating agent and the material to be coated can be fully mixed when they are mixed and coated, thereby improving the coating effect.

[0052] Please refer to Figure 2-Figure 3 , Figure 3 for Figure 2 The side view of the atomizing nozzle is shown. In this embodiment, the shell is further provided with a bypass airway 57 connected to the accelerating airway 54, and part of the atomizing gas can enter the bypass airway 57; the atomizing nozzle 50 also includes a nozzle 56 sleeved on the first air outlet 521 of the shell, and the nozzle 56 and the shell are surrounded to form a second air outlet 522 connected to the bypass airway 57, and the atomizing gas sprayed from the second air outlet 522 is used to further atomize the atomized coating agent sprayed from the first air outlet 521.

[0053] In addition to the accelerating air channel 54, a shunt air channel 57 may be provided in the housing. The shunt air channel 57 is connected to the accelerating air channel 54. Therefore, part of the atomized gas entering the air inlet 52 will be accelerated through the accelerating air channel 54 and finally mixed and atomized with the dispersed liquid coating agent in the mixing chamber 55. The remaining atomized gas will enter the shunt air channel 57 through the accelerating air channel 54. At the same time, the atomizing nozzle 50 may also include a nozzle 56 that is sleeved on the first air outlet 521 of the housing, and the first air outlet 521 is exposed so that the atomized coating agent can be smoothly output.

[0054] Furthermore, the nozzle 56 is not tightly mounted on the shell, but has a certain gap with the shell, so the nozzle 56 and the shell can be surrounded to form a second gas outlet 522. In this embodiment, the second gas outlet 522 can be connected to the shunt airway 57, so the atomized gas in the shunt airway 57 can be discharged through the second gas outlet 522. It can be seen that the atomizing nozzle 50 can not only spray out the coating agent after preliminary atomization, but also spray out part of the high-pressure atomized gas. The spraying direction of the second gas outlet 522 can be adjusted by designing the shape of the nozzle 56 and the shell. In this embodiment, the second gas outlet 522 can spray the atomized gas toward the coating agent after preliminary atomization, so that the high-pressure atomized gas sprayed can also cause the atomized liquid droplet group to be squeezed and deformed and further atomized, thereby expanding the spraying area and reducing the droplet particle size, further improving the coating effect, increasing the uniformity of the coating and the disorder of the coating material in the cavity, and reducing the agglomeration between the coating materials.

[0055] Optionally, the nozzle 56 and the shell of the atomizing nozzle 50 cooperate with each other through a groove and a boss. Specifically, the groove is provided in one of the shell and the nozzle 56, and the boss is provided in the other of the shell and the nozzle 56. This embodiment is only schematically described by providing the boss in the shell and the groove in the nozzle 56. For example, the outer peripheral side of the shell may be provided with a square boss, which extends along the axial direction of the shell. The nozzle 56 has a through hole sleeved on the shell, and a square groove corresponding to the square boss is provided on the inner side wall of the through hole. The nozzle 56 can be sleeved on the shell from one end of the shell through the through hole along the axial direction of the shell, and the square boss on the shell is provided in the square groove of the nozzle 56 during the sleeve process.

[0056] In this embodiment, the housing is provided with two air inlets 52 and two accelerating air passages 54 that are symmetrically distributed relative to the liquid inlet 51. Two air inlets 52 and accelerating air passages 54 that are respectively connected to one air inlet 52 can be provided on the housing, and the two air inlets 52, the two accelerating air passages 54 and the liquid inlet 51 are symmetrically distributed. In this way, the amount of atomizing gas introduced can be increased, and the atomization effect can be further improved.

[0057] Please refer to Figure 4 , Figure 4 The cross-sectional view of the wall of the mixing bin in one embodiment of the present application. In this embodiment, the bin wall 26 of the mixing bin 20 is provided with at least one mounting hole 27 along its circumferential direction, and the at least one mounting hole 27 connects the first feed port 21 with the mixing space 200. Each of the first feed ports 21 is provided with an atomizing nozzle 50, and the mounting hole 27 is inclined at 30°-60° so that the atomizing nozzle 50 can spray the atomized coating agent along the inner side of the bin wall 26.

[0058] At least one mounting hole 27 is provided in the circumferential direction of the silo wall 26, and the mounting hole 27 is used to set the atomizing nozzle 50, and the mounting hole 27 connects the first feed port 21 and the mixing space 200, so that the coating agent entering through the first feed port 21 can enter the atomizing nozzle 50, and then spray into the mixing space 200 after being atomized by the atomizing nozzle 50. In this embodiment, the mounting hole 27 is tilted by 30°-60°, and the atomizing nozzle 50 is also tilted by 30°-60°, so that the atomizing nozzle 50 does not spray toward the center of the mixing space 200, but sprays toward the inner side of the silo wall 26 at an angle. Since the material to be coated dispersed by the rotating member 40 is dispersed on the outside of the mixing space 200 under the action of centrifugal force, that is, distributed near the inner side wall of the silo wall 26. Therefore, spraying the atomizing nozzle 50 toward the inner side of the silo wall 26 can make the coating agent fully mixed with the material to be coated, thereby improving the coating effect of the coating agent and the material to be coated.

[0059] Optionally, the inclination angle of the mounting hole 27 may be 30°, 35°, 40°, 45°, 50°, 55°, or 60°.

[0060] Optionally, the warehouse wall 26 of the mixing warehouse 20 may be provided with a plurality of through holes, for example, three, four, five, six, etc., and this embodiment is schematically illustrated by only providing three through holes in the warehouse wall 26. At the same time, the three through holes are evenly spaced and arranged in a ring on the warehouse wall 26, that is, the atomizing nozzle 50 is arranged at intervals of 120° around the coating device 1, thereby ensuring that the coating agent sprayed by the atomizing nozzle 50 can be evenly sprayed in the mixing warehouse 20, ensuring the uniformity of the spray feed.

[0061] The coating device 1 provided in this embodiment can achieve synchronous mixing and output of the material to be coated and the coated material by arranging a rotating member 40 in the mixing bin 20 and arranging a material bin 30 on the side of the mixing bin 20 away from the base 10. Specifically, by arranging a rotating member 40 in the mixing bin 20, the rotating member 40 can generate a rotating airflow when rotating, so that the rotating airflow can drive the coating agent in the mixing bin 20 and the material to be coated to be fully mixed, and at the same time, the coated material obtained after the coating agent and the material to be coated are mixed will be driven by the rotating airflow, so that the mixed coated material will move in the mixing bin 20 in a direction away from gravity, that is, in a vertically upward direction. In addition, since the material bin 30 is arranged on the side of the mixing bin 20 away from the base 10, the mixed coated material can be transported to the material bin 30, and can be directly output to the next device for the next process, such as a dust removal device. Compared with the related art, in which the coating equipment 1 needs to be shut down before the coating material can be output, this embodiment realizes that the coating agent and the material to be coated are mixed in the mixing bin 20, and the mixed coating material can be synchronously output to the next dust removal device, thereby improving the production efficiency and capacity of the coating equipment 1.

[0062] This embodiment further provides a coating system, which includes the coating device 1 provided in the above embodiment of the present application. The coating system provided in this embodiment can improve the coating efficiency by using the coating device 1 provided in the above embodiment of the present application.

[0063] The above is a detailed introduction to the contents provided in the implementation mode of the present application. This article explains and illustrates the principles and implementation modes of the present application. The above explanation is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation mode and application scope. In summary, the contents of this specification should not be understood as limiting the present application.

[0064] In the description of the present application, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0066] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated. It can be mechanically connected or electrically connected. It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0067] The above describes the contents provided by the implementation methods of the present application in detail, and describes and illustrates the principles and implementation methods of the present application. These descriptions are only used to help understand the method and its core ideas of the present application. However, the contents of this specification should not be construed as limiting the present application, and those skilled in the art may make various changes and modifications to the present application without departing from the spirit and scope of the present application. These modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents.

Claims

1. A coating device, characterized in that: The coating equipment comprises: Pedestal; A mixing bin is provided on the base, the mixing bin is provided with a mixing space, the mixing bin is provided with a first feed inlet and a second feed inlet communicating with the mixing space, the first feed inlet is used for introducing a liquid coating agent, and the second feed inlet is used for introducing a material to be coated; an atomizing nozzle, disposed in the first feed port, and used for atomizing the liquid coating agent; A rotating member is disposed in the mixing space, and is used to disperse the material to be coated, so that the atomized coating agent coats the dispersed material to be coated to obtain the coated material; A material bin is connected to the mixing space and is used to contain the coating material.

2. The coating device according to claim 1, characterized in that: The atomizing nozzle comprises a shell, one end of which is provided with a liquid inlet and an air inlet, and the other end of which is provided with a first air outlet, the liquid inlet is used for introducing the liquid coating agent, the air inlet is used for introducing atomizing gas, the atomizing gas is used for mixing with the liquid coating agent and atomizing the liquid coating agent, and the first air outlet is used for outputting the atomized coating agent.

3. The coating device according to claim 2, characterized in that: A stirring chamber connected to the liquid inlet is arranged in the shell, and the atomizing nozzle further comprises a stirring member, and the stirring member is used for stirring the liquid coating agent, so as to disperse the liquid coating agent.

4. The coating device according to claim 3, characterized in that: An accelerating air passage connected to the air inlet is arranged in the shell, and the diameter of the accelerating air passage gradually decreases from the direction close to the air inlet to the direction far away from the air inlet, so as to accelerate the atomized gas.

5. The coating device according to claim 4, characterized in that: A mixing chamber communicating with the accelerating airway and the stirring chamber is provided in the shell, and the mixing chamber is used to mix the dispersed liquid coating agent with the accelerated atomizing gas and atomize the coating agent.

6. The coating device according to claim 4, characterized in that: The shell is also provided with a bypass airway connected to the accelerating airway, and part of the atomizing gas can enter the bypass airway; the atomizing nozzle also includes a nozzle mounted on the first air outlet of the shell, and the nozzle and the shell are arranged to form a second air outlet connected to the bypass airway, and the atomizing gas sprayed from the second air outlet is used to further atomize the atomized coating agent sprayed from the first air outlet.

7. The coating device according to claim 4, characterized in that: The shell is provided with two air inlets and two accelerating air passages which are symmetrically distributed relative to the liquid inlet.

8. The coating device according to claim 1, characterized in that: The wall of the mixing bin is provided with at least one mounting hole along its circumferential direction, and the at least one mounting hole connects the first feed port and the mixing space. Each of the first feed ports is provided with an atomizing nozzle, and the mounting hole is inclined at 30°-60° so that the atomizing nozzle can spray the atomized coating agent along the inner side surface of the bin wall.

9. The coating device according to claim 1, characterized in that: The coating material transported to the material bin can be used for synchronous transport to the dust removal equipment.

10. The coating device according to claim 1, characterized in that: The material bin is arranged on a side of the mixing bin away from the base.

11. The coating device according to claim 1, characterized in that: The coating equipment also includes an air volume bin arranged between the base and the mixing bin, the air volume bin connects the second feed port and the mixing space, and the air volume bin is used to assist the to-be-coated material entering from the second feed port to enter the mixing space more.

12. A coating system, characterized in that: Comprising a coating device as described in any one of claims 1-11.

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