CN221208616U - Crucible coating spraying device - Google Patents

Abstract

The utility model discloses a crucible coating spraying device, which relates to the field of spraying technology, including a nozzle and a telescopic mechanism, wherein one end of an output member of the telescopic mechanism is fixedly connected to the nozzle, and the output member of the telescopic mechanism can drive the nozzle to perform a uniform telescopic movement along a first direction inside a crucible to be sprayed, the nozzle has a first cavity, and the nozzle has at least 5 side walls, each side wall has at least one side nozzle connected to the first cavity, and the spray coating sprayed from each side nozzle can cover the circumferential inner wall of the crucible to be sprayed, and the first cavity can receive the supplied spray coating and the supplied compressed air. By adopting a telescopic mechanism to drive the nozzle to perform uniform telescopic movement inside the crucible to be sprayed, uniform spraying is completed, and the required coating thickness can be completed in a single spraying, thereby shortening the spraying operation time and reducing the coating loss caused by the number of spraying passes.

Description

Crucible coating spraying device

Technical Field

The utility model relates to the technical field of spraying, in particular to a crucible coating spraying device.

Background technique

Quartz crucibles have the advantages of high purity, strong temperature resistance, large size and high precision, good heat preservation, energy saving and stable quality, and are increasingly widely used. The spraying device used in the coating spraying process of quartz crucibles is to flatten one end of a 2-meter-long steel pipe to leave a gap to form a nozzle, and pass alumina and compressed air into the steel pipe through a Y-type joint at the other end to form a spray gun.

When spraying the crucible, the operator first extends the spray gun into the cylindrical crucible, and then repeatedly rotates and stretches the spray gun to spray the inner wall of the cylindrical crucible. However, the existing spraying device has the following disadvantages:

1. Since the length of the single spraying area of the spray gun only occupies half of the length of the cylindrical crucible, the manpower can theoretically spray half of the inner wall of the crucible each time by rotating and stretching the spray gun. It takes at least two times to spray a crucible in a single time. In addition, the rubber hose that transports alumina and compressed air is bent and blocked due to rotation during operation, affecting the spraying effect;

2. The operators were unable to achieve uniform spraying speed, and the bending and blockage of the material pipe and air duct resulted in uneven adhesion of alumina on the inner wall of the crucible, resulting in poor spraying effect;

3. In the actual spraying operation, each crucible needs to be sprayed 3 times to be completed, and each time takes about 3 minutes. It takes an average of 9 minutes to spray a crucible, which leads to a long working time. In addition, the total amount of aluminum oxide used in three times is about 0.5 kg. Since a certain amount of aluminum oxide is not sprayed on the crucible when entering and leaving the crucible each time the spraying is performed, the three times cumulatively will result in a large amount of aluminum oxide.

Utility Model Content

The utility model aims to provide a crucible coating spraying device to solve the problems existing in the above-mentioned prior art, so that the coating is sprayed evenly and has a good spraying effect, the spraying operation time is accelerated and the spraying amount loss can be reduced.

To achieve the above purpose, the utility model provides the following solutions:

The utility model provides a crucible coating spraying device, comprising a nozzle and a telescopic mechanism, wherein one end of an output member of the telescopic mechanism is fixedly connected to the nozzle, and the output member of the telescopic mechanism can drive the nozzle to perform a uniform speed telescopic action along a first direction inside a crucible to be sprayed, the nozzle has a first cavity, and the nozzle has at least 5 side walls, each of the side walls has at least one side nozzle connected to the first cavity, the spray coating material sprayed from each side nozzle can cover the circumferential inner wall of the crucible to be sprayed, and the first cavity can receive supplied spray coating material and supplied compressed air.

Preferably, the telescopic mechanism includes a frame, a spray gun tube and a driving device, the spray gun tube is slidably arranged on the frame along the first direction, one end of the spray gun tube is fixedly connected to the nozzle and one end opening of the spray gun tube is communicated with the first cavity, and the other end opening of the spray gun tube can allow the supplied spray paint and the supplied compressed air to pass through, the driving device is fixedly arranged on the frame, a gear is fixedly arranged on the output shaft of the driving device, a rack is fixedly arranged on the outer side wall of the spray gun tube, the rack extends along the first direction, and the gear is meshed with the rack for transmission.

Preferably, it also includes a controller, a first limit sensor and a second limit sensor, the first limit sensor and the second limit sensor are arranged along the first direction, and the first limit sensor and the second limit sensor are both fixedly arranged on the frame, the spray gun pipe is located on the side of the first limit sensor away from the second limit sensor and has a first limit portion, the spray gun pipe is located on the side of the second limit sensor away from the first limit sensor and has a second limit portion, the controller is communicatively connected with the first limit sensor, the second limit sensor and the drive device, the first limit sensor can generate a signal that the first limit portion is close to the first limit sensor and transmit it to the controller, and the second limit sensor can generate a signal that the second limit portion is close to the second limit sensor and transmit it to the controller.

Preferably, the first limit portion and the second limit portion are both metal plates, and the first limit sensor and the second limit sensor are both proximity switch metal sensors.

Preferably, it also includes a Y-type three-way joint, which has a first connecting port, a second connecting port and a third connecting port that are interconnected, the first connecting port is fixedly connected and connected to an opening at one end of the spray gun tube away from the nozzle, the second connecting port is used to introduce supplied spray paint, and the third connecting port is used to introduce supplied compressed air.

Preferably, each of the side walls is provided with a side nozzle, each of the side nozzles is detachably fixed on one of the side walls, and each of the side nozzles has at least one side nozzle.

Preferably, at least one top nozzle is further provided at one end of the nozzle away from the telescopic mechanism, and each of the top nozzles is communicated with the first cavity.

Preferably, a top nozzle is fixedly provided at one end of the nozzle away from the telescopic mechanism, and the top nozzle has at least one top nozzle opening.

Preferably, the number of the side walls is 6.

Preferably, a support platform is fixedly arranged on the frame, and the driving device is fixedly arranged on the support platform.

Compared with the prior art, the utility model has achieved the following technical effects:

The crucible coating spraying device provided by the utility model drives the spray head to be extended and retracted inside the crucible to be sprayed by adopting a telescopic mechanism, spraying of the coating inside the crucible is achieved by introducing spray material and compressed air, and the telescopic mechanism automatically and evenly drives the spray head to move to complete uniform spraying; and at least 5 side walls are arranged on the spray head, and each side wall is provided with at least one side nozzle, so that 360° circumferential spraying of the inside of the crucible can be achieved at a single time, so that the spraying of the entire length direction of the crucible can be completed by only extending and retracting relative to the inside of the crucible; and because a plurality of side nozzles are arranged on a plurality of side walls, a required spray coating thickness can be achieved by a single spraying, and a required coating thickness can be achieved by a single spraying, thereby shortening the spraying operation time; reducing the number of spraying passes can also reduce the coating loss caused by the coating not being sprayed on the inner wall of the crucible when entering the inside of the crucible or leaving the inside of the crucible due to two adjacent spraying passes.

Furthermore, the telescopic action is achieved by meshing the gear of the driving device with the rack on the spray gun tube, which has a simple structure, is stable and reliable, and can drive the spray head to achieve a more uniform and stable telescopic action relative to the inner wall of the crucible.

Furthermore, the provision of the first limit sensor and the second limit sensor can ensure the extreme positions of the movement of the nozzle position, ensuring that it does not contact the bottom of the crucible or cause the nozzle to withdraw excessively, causing interference and collision with the frame, thereby ensuring the safety of equipment operation.

Furthermore, a proximity switch metal sensor is used in combination with a metal plate. This type of sensor is a common sensor and is easy to purchase and manufacture.

Furthermore, the Y-type three-way connector can facilitate the connection between the spray gun pipe and the supplied spray material and the supplied compressed air.

Furthermore, by connecting the side nozzle to the spray head, different spraying area size requirements can be achieved by replacing different side nozzles with different numbers of side nozzles.

Furthermore, the top nozzle is arranged to spray the bottom of the crucible opposite to the nozzle, thereby ensuring an all-round spraying effect.

Furthermore, the top nozzle of the top nozzle is used to achieve that the side of the nozzle away from the telescopic mechanism can spray the bottom of the crucible, thereby completing effective spraying of the bottom of the crucible.

Furthermore, six side walls are provided, which can realize uniform and all-round spraying of the inner wall of the crucible and ensure the spraying effect.

Furthermore, the arrangement of the support platform can provide for the installation of the driving device, so that the driving device can be stably and firmly fixed on the support platform.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the overall structure of a crucible coating spraying device provided by the utility model;

FIG2 is a schematic diagram of the structure of a nozzle in a crucible coating spraying device provided by the present invention;

FIG3 is a schematic structural diagram of a frame in a crucible coating spraying device provided by the present invention.

In the figure: 100-crucible coating spraying device; 10-nozzle; 11-side nozzle; 12-top nozzle; 20-frame; 21-base; 22-first leg; 23-second leg; 24-third leg; 25-support platform; 30-spray gun tube; 31-rack; 32-Y-type three-way connector; 33-first limit part; 34-second limit part; 40-driving device; 41-gear; 50-first limit sensor; 60-second limit sensor; 70-guide device.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

The utility model aims to provide a crucible coating spraying device to solve the problems existing in the prior art, so that the coating is sprayed evenly and has a good spraying effect, the spraying operation time is accelerated and the spraying amount loss can be reduced.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

Embodiment 1

The present embodiment provides a crucible coating spraying device 100, as shown in Figures 1 to 3, specifically, for spraying the coating on the inner wall of the crucible, including a nozzle 10 and a telescopic mechanism, one end of an output member of the telescopic mechanism is fixedly connected to the nozzle 10, and the output member of the telescopic mechanism can drive the nozzle 10 to perform a uniform speed telescopic action along a first direction inside the crucible to be sprayed, the nozzle 10 has a first cavity, and the nozzle 10 has at least 5 side walls, each side wall has at least one side nozzle connected to the first cavity, the spray coating sprayed from each side nozzle can cover the circumferential inner wall of the crucible to be sprayed, and the first cavity can receive the supplied spray coating and the supplied compressed air. The telescopic mechanism is used to drive the nozzle 10 to telescope inside the crucible to be sprayed, and the coating inside the crucible is sprayed by introducing spray material and compressed air. The telescopic mechanism automatically and evenly drives the nozzle 10 to move to complete uniform spraying. At least five side walls are provided on the nozzle 10, and each side wall is provided with at least one side nozzle, so that the inside of the crucible can be sprayed 360° in a single time. Therefore, it is only necessary to telescope relative to the inside of the crucible to complete the spraying of the entire length direction of the crucible. Since multiple side nozzles are provided on multiple side walls, the required coating thickness can be achieved by a single spraying, and the required coating thickness can be achieved by a single spraying, thereby shortening the spraying operation time. Reducing the number of spraying times can also reduce the coating loss caused by the coating not being sprayed on the inner wall of the crucible when entering the inside of the crucible or leaving the inside of the crucible due to two adjacent spraying times.

Specifically, by setting a plurality of side nozzles, a plurality of spraying surfaces can be formed, and the spraying of each circumferential side nozzle can cover the circumferential inner wall of the crucible. The spraying of the inner wall of the cylindrical crucible can be completed by only driving the nozzle 10 to move in a straight line by the telescopic mechanism, thereby avoiding the bending of the spray material pipe and the compressed air pipe caused by the rotating spray gun tube 30, resulting in blockage and uneven spraying. It also avoids the differentiation and unevenness of traditional manual spraying, realizes one-time forming of the crucible spraying, avoids repeated operations, and the time for spraying a crucible can be reduced to 3 minutes, and the amount of alumina is reduced to 0.35kg, saving the amount of alumina. The amount of spray material sprayed per unit time can be increased by multiple side nozzles and top nozzles, so that the same coating thickness formed by three times of traditional spraying can be sprayed in the same time.

Specifically, the spray coating material used for coating the inner wall of the crucible is aluminum oxide.

Specifically, the telescopic mechanism can drive the spray head 10 to move at a uniform speed along the first direction.

Specifically, the first direction coincides with the axis of the crucible to be sprayed. At this time, the spraying effect is better and the circumferential inner wall of the crucible can be sprayed more evenly.

In the optional scheme of this embodiment, it is more preferred, as shown in Figures 1 and 3, that the telescopic mechanism includes a frame 20, a spray gun tube 30 and a driving device 40, the spray gun tube 30 is slidably arranged on the frame 20 along the first direction, one end of the spray gun tube 30 is fixedly connected to the nozzle 10 and one end opening of the spray gun tube 30 is connected to the first cavity, and the other end opening of the spray gun tube 30 can pass the supplied spray paint and the supplied compressed air, the driving device 40 is fixedly arranged on the frame 20, a gear 41 is fixedly arranged on the output shaft of the driving device 40, a rack 31 is fixedly arranged on the outer wall of the spray gun tube 30, the rack 31 extends along the first direction, and the gear 41 is meshed with the rack 31 for transmission. The telescopic action is realized by meshing the gear 41 of the driving device 40 with the rack 31 on the spray gun tube 30, which has a simple structure, is stable and reliable, and can drive the nozzle 10 to realize a stable telescopic action relative to the inner wall of the crucible in a more uniform and stable manner.

Specifically, the driving device 40 is a motor.

Specifically, at least one guide device 70 is further provided on the frame 20, and the guide device 70 can ensure that the spray gun tube 30 reciprocates along the first direction; or a guide groove is provided on the frame 20, and the spray gun tube 30 is slidably arranged in the guide groove along the first direction.

Specifically, the guide device 70 is an open linear sliding bearing.

In the optional scheme of this embodiment, it is more preferred that, as shown in Figure 1, the crucible coating spraying device 100 also includes a controller, a first limit sensor 50 and a second limit sensor 60, the first limit sensor 50 and the second limit sensor 60 are arranged along the first direction, and the first limit sensor 50 and the second limit sensor 60 are both fixedly arranged on the frame 20, the spray gun tube 30 is located on the side of the first limit sensor 50 away from the second limit sensor 60 and has a first limit portion 33, the spray gun tube 30 is located on the side of the second limit sensor 60 away from the first limit sensor 50 and has a second limit portion 34, the controller is communicatively connected with the first limit sensor 50, the second limit sensor 60 and the driving device 40, the first limit sensor 50 can generate a signal that the first limit portion 33 is close to the first limit sensor 50 and transmit it to the controller, and the second limit sensor 60 can generate a signal that the second limit portion 34 is close to the second limit sensor 60 and transmit it to the controller. The first limit sensor 50 and the second limit sensor 60 can ensure the two end limit positions of the movement of the nozzle 10, ensuring that it does not contact the bottom of the crucible or cause the nozzle 10 to withdraw excessively and cause interference and collision with the frame 20, thereby ensuring the safety of equipment operation.

Specifically, the first limit sensor 50 and the second limit sensor 60 are used to sense the limit positions of both ends of the spray gun tube 30 along the first direction.

Specifically, the controller can control the driving device 40 to stop running according to the sensing signals transmitted by the first limit sensor 50 and the second limit sensor 60 .

Specifically, the output shaft of the driving device 40 rotates forward and reversely to drive the spray gun tube 30 to reciprocate along the first direction.

In the optional solution of this embodiment, it is more preferred that the first limit portion 33 and the second limit portion 34 are both metal plates, and the first limit sensor 50 and the second limit sensor 60 are both proximity switch metal sensors. The proximity switch metal sensor and the metal plate are used together, and this type of sensor is a common sensor and is easy to purchase and manufacture.

In the optional scheme of this embodiment, it is more preferred that, as shown in FIG1 , the crucible coating spraying device 100 further includes a Y-shaped three-way joint 32, the Y-shaped three-way joint 32 having a first connecting port, a second connecting port and a third connecting port that are interconnected, the first connecting port being fixedly connected and connected to an opening at one end of the spray gun pipe 30 away from the nozzle 10, the second connecting port being used to introduce the supplied spray coating material, and the third connecting port being used to introduce the supplied compressed air. The Y-shaped three-way joint 32 can facilitate the connection between the spray gun pipe 30 and the supplied spray coating material and the supplied compressed air.

In the optional scheme of this embodiment, it is more preferred that, as shown in Figures 1 and 2, each side wall is provided with a side nozzle 11, each side nozzle 11 is detachably fixed on a side wall, and each side nozzle 11 has at least one side nozzle. The side nozzle 11 is connected to the nozzle head 10, and different spraying area size requirements can be selected by replacing different side nozzles 11 with different numbers of side nozzles.

In the optional scheme of this embodiment, it is more preferred that, as shown in Figures 1 and 2, at least one top nozzle is further provided at one end of the nozzle head 10 away from the telescopic mechanism, and each top nozzle is connected to the first cavity. The provision of the top nozzle can realize spraying on the bottom of the crucible opposite to the nozzle head 10, ensuring an all-round spraying effect.

Specifically, to ensure the spraying effect, the side nozzle can be used to spray the spray material in a fan shape, the fan shape is perpendicular to the axis of the crucible, and the top nozzle sprays the spray material in a conical shape, the large mouth end of the cone shape is not less than the inner diameter of the crucible, and the connecting parts of the fan shapes sprayed by two adjacent side nozzles can be connected.

In the optional scheme of this embodiment, it is more preferred that, as shown in Figures 1 and 2, a top nozzle 12 is fixedly provided at one end of the nozzle 10 away from the telescopic mechanism, and the top nozzle 12 has at least one top nozzle opening. The top nozzle opening of the top nozzle 12 is used to enable the side of the nozzle 10 away from the telescopic mechanism to spray the bottom of the crucible, thereby completing effective spraying of the bottom of the crucible.

Specifically, the top nozzle 12 may also be detachably fixed on the nozzle 10 to facilitate replacement and maintenance of the top nozzle 12 .

In the optional scheme of this embodiment, it is more preferred that the number of side walls is 6 as shown in Figures 1 and 2. The side walls are provided with 6, which can realize uniform and all-round spraying of the inner wall of the crucible and ensure the spraying effect.

Specifically, the spray materials sprayed from the side nozzles on two adjacent side walls can be connected at the connection point on the inner wall of the crucible to ensure the all-round effect of spraying.

In the optional scheme of this embodiment, it is more preferred that, as shown in Figures 1 and 3, a support platform 25 is fixedly arranged on the frame 20, and the driving device 40 is fixedly arranged on the support platform 25. The arrangement of the support platform 25 can provide the installation of the driving device 40, so that the driving device 40 can be stably and firmly fixed on the support platform 25.

Specifically, the frame 20 includes a base 21, a first leg 22 and a second leg 23. The first leg 22 and the second leg 23 are arranged in parallel and the lower ends of the first leg 22 and the second leg 23 are fixedly connected to the base 21. A guide device 70 is provided at the upper end of the first leg 22, and a guide device 70 is provided at the upper end of the second leg 23. The spray gun tube 30 is slidably provided on the two guide devices 70 along the first direction.

Specifically, it also includes a third leg 24 , the lower end of the third leg 24 is fixedly connected to the base 21 , and the upper end of the third leg 24 is fixedly connected to the support platform 25 .

Specifically, the support platform 25 provides a platform for fixing the drive device 40 so that the position of the drive device 40 is fixed; the forward switch button of the drive device 40 is turned on, which drives the gear 41 to rotate, and the gear 41 engages with the rack 31, driving the spray gun tube 30 to extend into the crucible until the second limit portion 34 on the spray gun tube 30 approaches the sensing area of the second limit sensor 60, and its sensing signal is transmitted to the controller. The controller turns off the drive device 40 according to its signal. At this time, the nozzle 10 on the spray gun tube 30 extends to the specified position at the bottom of the crucible.

The first connecting port of the Y-type three-way connector 32 is connected to the end of the spray gun tube 30 away from the nozzle 10 through a threaded connection, and is provided with a ball valve switch to control the on-off. The second connecting port is connected to the hose for introducing alumina through a quick connector, and the third connecting port is connected to the hose for introducing compressed air through a quick connector. The ball valve switch is turned on to allow alumina and compressed air to be introduced into the spray gun tube 30, and alumina is sprayed toward the inner wall of the crucible from the side nozzles and the top nozzle on the nozzle 10. The reverse switch button of the driving device 40 is turned on, and the spray gun tube 30 is driven to withdraw from the inside of the crucible at a uniform speed through the engagement of the gear 41 and the rack 31, until the first limit portion 33 on the spray gun tube 30 approaches the sensing area of the first limit sensor 50, and its sensing signal is transmitted to the controller. The controller turns off the driving device 40 according to its signal. At this time, the nozzle 10 completely withdraws from the crucible, closes the ball valve, and completes the spraying of the inner wall of the crucible.

The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims (10)

1. A crucible coating spraying device, characterized in that: it includes a nozzle and a telescopic mechanism, one end of the output member of the telescopic mechanism is fixedly connected to the nozzle, and the output member of the telescopic mechanism can drive the nozzle to perform a uniform speed telescopic action along a first direction inside the crucible to be sprayed, the nozzle has a first cavity, and the nozzle has at least 5 side walls, each of the side walls has at least one side nozzle connected to the first cavity, the spray coating material sprayed from each side nozzle can cover the circumferential inner wall of the crucible to be sprayed, and the first cavity can receive the supplied spray coating material and the supplied compressed air. 2. The crucible coating spraying device according to claim 1 is characterized in that: the telescopic mechanism comprises a frame, a spray gun tube and a driving device, the spray gun tube is slidably arranged on the frame along the first direction, one end of the spray gun tube is fixedly connected to the nozzle and one end opening of the spray gun tube is communicated with the first cavity, and the other end opening of the spray gun tube can pass the supplied spray material and the supplied compressed air, the driving device is fixedly arranged on the frame, a gear is fixedly arranged on the output shaft of the driving device, a rack is fixedly arranged on the outer side wall of the spray gun tube, the rack extends along the first direction, and the gear is meshed with the rack for transmission. 3. The crucible coating spraying device according to claim 2 is characterized in that it also includes a controller, a first limit sensor and a second limit sensor, the first limit sensor and the second limit sensor are arranged along the first direction, and the first limit sensor and the second limit sensor are both fixedly arranged on the frame, the spray gun tube is located on a side of the first limit sensor away from the second limit sensor and has a first limit portion, the spray gun tube is located on a side of the second limit sensor away from the first limit sensor and has a second limit portion, the controller is communicatively connected with the first limit sensor, the second limit sensor and the driving device, the first limit sensor can generate a signal that the first limit portion is close to the first limit sensor and transmits it to the controller, and the second limit sensor can generate a signal that the second limit portion is close to the second limit sensor and transmits it to the controller. 4 . The crucible coating spraying device according to claim 3 , wherein the first limit portion and the second limit portion are both metal plates, and the first limit sensor and the second limit sensor are both proximity switch metal sensors. 5. The crucible coating spraying device according to claim 2 is characterized in that it also includes a Y-shaped three-way joint, the Y-shaped three-way joint having a first connecting port, a second connecting port and a third connecting port that are interconnected, the first connecting port is fixedly connected and communicated with an opening at one end of the spray gun pipe away from the nozzle, the second connecting port is used to introduce the supplied spray material, and the third connecting port is used to introduce the supplied compressed air. 6. The crucible coating spraying device according to claim 1 is characterized in that: each of the side walls is provided with a side nozzle, each of the side nozzles is detachably fixed on one of the side walls, and each of the side nozzles has at least one side nozzle. 7. The crucible coating spraying device according to claim 1, characterized in that: at least one top nozzle is further provided at one end of the nozzle away from the telescopic mechanism, and each top nozzle is communicated with the first cavity. 8. The crucible coating spraying device according to claim 7, characterized in that a top nozzle is fixedly provided at one end of the nozzle away from the telescopic mechanism, and the top nozzle has at least one top nozzle opening. 9 . The crucible coating spraying device according to claim 1 , wherein the number of the side walls is 6. 10. The crucible coating spraying device according to claim 2, characterized in that a support platform is fixedly arranged on the frame, and the driving device is fixedly arranged on the support platform.