Evaporation crucible with evaporation holes convenient to clean

Abstract

According to the evaporation crucible facilitating cleaning of the evaporation holes, through a containing cylinder, a cleaning assembly and a driving assembly which are arranged at the bottom of a crucible body, when the inner side of a nozzle on a crucible cover needs to be cleaned, a small gear motor of the cleaning assembly drives a cleaning vertical rod to rotate so as to drive a cleaning brush head on the top of the cleaning vertical rod to rotate; then a cleaning brush head of the cleaning assembly is pushed into the nozzle through the driving assembly to clean the evaporation holes, meanwhile, a heating coil on the periphery of the nozzle can heat the blocked evaporation materials to melt the blocked evaporation materials, cleaning is convenient, and after cleaning is completed, the cleaning assembly is driven by the driving assembly to return to the containing cylinder; waste materials on the cleaning brush head can be shoveled away and fall into a waste material groove, and follow-up use is prevented from being affected by waste material solidification; in addition, semi-sealing covers are symmetrically hinged to the two sides of the opening in the top end of the containing cylinder, and the sealing performance of the crucible can be kept. Through the design, the cleaning time of the nozzle evaporation holes is greatly saved, the productivity of the evaporation process is improved, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of evaporation crucibles, and in particular to an evaporation crucible which is convenient for cleaning evaporation holes. Background Art

[0002] With the rapid development of science and technology, display technology is also constantly innovating. Among them, organic light-emitting diode display (OLED) technology, with its unique advantages such as thin and light appearance, low power consumption characteristics and excellent display effect, is gradually emerging and is regarded as the mainstream technology of the next generation of displays. OLED displays not only have high contrast and high color gamut, but also can achieve flexible display, which greatly broadens its application range. However, despite the many advantages of OLED technology, there are still some technical difficulties in its production process. In particular, during the evaporation process of OLED materials, a key problem is the blockage of the evaporation holes. Since OLED materials present a fluffy structure during evaporation, these materials are easy to accumulate in the evaporation holes on the lid of the evaporation crucible. Over time, these accumulated materials may completely block the evaporation holes. Once the evaporation holes are blocked, the OLED materials will not evaporate normally, which will lead to the interruption of the evaporation process, which will not only seriously affect the production progress, but also may have an adverse effect on product quality. Under existing technical conditions, when the evaporation holes are blocked, the traditional solution is to cool the OLED material to room temperature, then open the cavity of the evaporation equipment, and clean the blocked evaporation holes. However, this method is not only time-consuming and labor-intensive, but also usually takes dozens of hours to complete the entire process. This not only disrupts the original production plan, but also may affect product quality due to temperature changes and air contamination during the opening and closing of the equipment. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of the present application is to provide a evaporation crucible that is easy to clean the evaporation holes, so as to solve the problems raised in the above background technology.

[0004] According to one aspect of the present application, a evaporation crucible that is convenient for cleaning evaporation holes comprises a crucible body, a crucible cover, a accommodating tube, a cleaning assembly, a driving assembly, a support frame, a semi-sealed cover and a waste tank, wherein the top of the crucible body is covered with a crucible cover, and at least one nozzle is fixedly provided on the crucible cover, and each of the nozzles is connected to the inner cavity of the crucible body, and a accommodating tube is vertically fixed at the inner bottom of the crucible body corresponding to the position of each nozzle, the bottom end of the accommodating tube is connected to the outer side of the bottom of the crucible body, and the top end of the accommodating tube is arranged opposite to the nozzle, and the inner diameter of the accommodating tube is larger than the inner diameter of the nozzle, and each A cleaning assembly is provided in the accommodating tube, and the bottom of each cleaning assembly extends out of the accommodating tube and is fixed on the driving assembly. The driving assembly is fixedly installed on the evaporation equipment through a supporting frame. Semi-sealed covers are hinged on both sides of the top opening of each accommodating tube, and the movable ends of the two semi-sealed covers are in contact with each other and can completely cover the top opening of the accommodating tube. A waste trough is fixedly installed at the bottom of the crucible body at the position of each accommodating tube, and each of the waste troughs is in contact with the cleaning assembly in the corresponding accommodating tube, and the waste trough is used to clean the evaporation waste cleaned from the nozzle on the cleaning assembly.

[0005] Preferably, the driving assembly includes a connecting plate and an electric push rod, the cleaning assembly is fixedly installed in the middle of the connecting plate, both sides of the connecting plate are fixedly connected to the protruding ends of the electric push rod, the fixed end of the electric push rod is fixedly installed on the support frame, and the axis of the electric push rod is parallel to the axis of the accommodating cylinder.

[0006] Preferably, the cleaning assembly includes a small reduction motor, a cleaning vertical rod, a cleaning brush head and a rotating sleeve, the small reduction motor is fixedly installed in the middle of the connecting plate, the output shaft of the small reduction motor is fixedly connected to the bottom end of the cleaning vertical rod, and the outer side wall of the cleaning vertical rod is slidably connected to the inner side wall of the rotating sleeve, and the bottom end of the rotating sleeve is fixedly arranged on the connecting plate, the upper part of the cleaning vertical rod is vertically extended in the accommodating tube and the axis of the cleaning vertical rod coincides with the axis of the accommodating tube, the outer diameter of the cleaning vertical rod is smaller than the inner diameter of the accommodating tube, a cleaning brush head is fixedly provided on the outer peripheral side of the top of the cleaning vertical rod, and the outer diameter of the cleaning brush head is equal to or larger than the inner diameter of the nozzle.

[0007] Preferably, the waste trough is an annular structure, and the waste trough consists of an outer cylinder, an inner cylinder and a trough bottom plate, the outer cylinder of the waste trough is fixedly mounted on the bottom of the crucible body on the outer peripheral side of the bottom opening of the accommodating cylinder, the inner cylinder of the waste trough is located on the outer peripheral side of the cleaning vertical rod and extends vertically to the inside of the accommodating cylinder, the top of the inner cylinder of the waste trough is a bent plate and can contact the cleaning brush head, and there is a gap between the inner cylinder of the waste trough and the inner wall of the accommodating cylinder.

[0008] Preferably, a heat-insulating protective shell is fixedly provided on the outer peripheral sides of the small reduction motor and the electric push rod.

[0009] Preferably, weight blocks are embedded in the movable ends of the two semi-sealed covers symmetrically arranged at the top opening of each accommodating tube.

[0010] Preferably, an outer convex platform is provided on the outer peripheral side of the top opening of each accommodating tube extending outward.

[0011] Preferably, a heating coil is provided on the outer circumference of each nozzle.

[0012] The advantages of the present application over the prior art are: a evaporation crucible of the present application which is convenient for cleaning evaporation holes, through the accommodating tube, cleaning assembly and driving assembly arranged at the bottom of the evaporation crucible, when it is necessary to clean the inner wall of the nozzle of the crucible cover, the small reduction motor is started to drive the cleaning vertical rod of the cleaning assembly to rotate, thereby causing the cleaning brush head at the top of the cleaning vertical rod to rotate, and at the same time, the electric push rod of the driving assembly is controlled to drive the connecting plate to move upward, thereby driving the cleaning assembly to move upward, so that the top of the cleaning vertical rod pushes upward to open the semi-sealed covers hingedly arranged on both sides of the opening at the top of the accommodating tube, and the cleaning brush head at the top of the cleaning vertical rod moves upward to the inside of the crucible cover nozzle and cleans and dredges the evaporation material blocked inside it, and at the same time, the heating coil arranged on the outer peripheral side of the nozzle is heated to melt the evaporation material blocked inside the nozzle, so that the cleaning brush head can clean it. When the cleaning and unblocking nozzle is completed, the electric push rod of the control driving assembly drives the connecting plate to move downward, and then drives the cleaning assembly to move downward, so that the cleaning vertical rod and the cleaning brush head move downward into the accommodating tube. When the cleaning brush head moves downward to contact with the bent plate at the top of the waste trough inner tube, the bent plate can shovel the waste on the cleaning brush head and drop it along the waste trough inner tube to the trough bottom plate of the waste trough, so as to facilitate subsequent processing and avoid the waste on the cleaning brush head from solidifying and affecting the reuse of the cleaning brush head. When the cleaning brush head is completely moved into the accommodating tube, the semi-sealed covers hinged on both sides of the opening at the top of the accommodating tube can resume the mutual resistance to seal the top opening of the accommodating tube due to the gravity of the weight blocks embedded at their movable ends. This design can greatly save the cleaning time of the nozzle evaporation hole, improve the capacity of the evaporation process, and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of a evaporation crucible that is convenient for cleaning evaporation holes according to an embodiment of the present application.

[0014] Figure 2 The present invention is a schematic structural diagram of a cleaning process of a evaporation crucible that facilitates cleaning of evaporation holes according to an embodiment of the present application.

[0015] Figure numerals: 1. Crucible body; 2. Crucible cover; 21. Nozzle; 3. Receiving tube; 31. External boss; 4. Cleaning assembly; 41. Small reduction motor; 42. Cleaning vertical rod; 43. Cleaning brush head; 44. Rotating sleeve; 5. Driving assembly; 51. Connecting plate; 52. Electric push rod; 6. Support frame; 7. Semi-sealed cover; 71. Weight block; 8. Waste trough; 9. Heat insulation protective shell; 10. Heating coil. DETAILED DESCRIPTION

[0016] In order to make the content of this application easier to understand, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the drawings in the embodiments of this application. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached drawings. Figure 1 As used herein, the terms "inward" and "outward" refer to directions toward and away from, respectively, the geometric center of the particular component.

[0017] like Figure 1 and Figure 2As shown, a evaporation crucible for easy cleaning of evaporation holes comprises a crucible body 1, a crucible cover 2, a accommodating tube 3, a cleaning assembly 4, a driving assembly 5, a supporting frame 6, a semi-sealed cover 7 and a waste material tank 8. The crucible body 1 is covered with a crucible cover 2 on the top, and at least one nozzle 21 (with the evaporation hole in the nozzle 21) is fixedly provided on the crucible cover 2, and a heating coil 10 is provided on the outer peripheral side of each nozzle 21. This design enables the evaporation material blocked in the nozzle 21 to melt under the heating of the heating coil 10 when cleaning the nozzle 21, so as to facilitate cleaning; each nozzle 21 is connected to the inner cavity of the crucible body 1, and the inner cavity of the crucible body 1 is used to hold the evaporation material, and a accommodating tube 3 is vertically fixed at the inner bottom of the crucible body 1 corresponding to the position of each nozzle 21, and the accommodating tube 3 is provided on the inner bottom of the crucible body 1 corresponding to the position of each nozzle 21. The bottom end of the accommodating tube 3 is connected to the outer side of the bottom of the crucible body 1, and the top end of the accommodating tube 3 is arranged opposite to the nozzle 21, and the inner diameter of the accommodating tube 3 is larger than the inner diameter of the nozzle 21, so as to facilitate the arrangement of a cleaning component 4 in the accommodating tube 3. In addition, an outer boss 31 is extended outwardly from the outer peripheral side of the top opening of each accommodating tube 3 to prevent the melted evaporation material in the crucible body 1 from splashing into the accommodating tube 3; a cleaning component 4 is arranged in each accommodating tube 3, and the bottom of each cleaning component 4 extends out of the accommodating tube 3 and is fixedly arranged on the driving component 5, which is fixedly installed on the evaporation device through the supporting frame 6, and the driving component 5 can drive the cleaning component 4 to move up and down along the axial direction of the accommodating tube 3 to clean the inner side of the nozzle 21 (in the prior art In the figure, the evaporation crucible is arranged on the heating source in the evaporation equipment as a conventional arrangement, so the installation structure of the crucible body 1 is not shown in the attached drawings); symmetrically arranged semi-sealed covers 7 are hinged on both sides of the top opening of each accommodating tube 3, and the movable ends of the two semi-sealed covers 7 are in conflict with each other and can completely cover the top opening of the accommodating tube 3. The two symmetrically arranged semi-sealed covers 7 can prevent the evaporation material in the crucible body 1 from leaking through the accommodating tube 3, causing waste of evaporation material and impact on the environment; a waste trough 8 is fixedly installed at the bottom of the crucible body 1 at the position of each accommodating tube 3, and each waste trough 8 is in contact with the cleaning component 4 in the corresponding accommodating tube 3, so that when the cleaning component 4 finishes cleaning the evaporation waste in the nozzle 21, the cleaning component 4 is driven by the driving component 4. When the cleaning component 4 is driven by the driving component 5 to return to the accommodating tube 3, the waste trough 8 can clean the evaporation waste on the cleaning component 4, which can prevent the evaporation waste from solidifying and affecting the reuse of the cleaning brush head 43; in the above design, through the accommodating tube 3, the cleaning component 4 and the driving component 5 arranged at the bottom of the crucible body 1, when the inner side of the nozzle 21 on the crucible cover 2 needs to be cleaned, the driving component 5 pushes the cleaning component 4 into the nozzle 21 to clean the evaporation hole, and at the same time, the heating coil 10 on the periphery of the nozzle 21 will heat to melt the clogged evaporation material for easy cleaning. After the cleaning is completed, the cleaning component 4 is driven by the driving component 5 to return to the accommodating tube 3, and the waste on the cleaning brush head 43 will be shoveled off and fall into the waste trough 8, so as to prevent the waste from solidifying and affecting subsequent use;In addition, semi-sealed covers 7 are symmetrically hinged on both sides of the top opening of the accommodating tube 3 to maintain the sealing of the crucible; this design greatly saves the time for cleaning the evaporation holes of the nozzle 21, improves the production capacity of the evaporation process, and reduces costs. ;

[0018] In one embodiment, in combination Figure 1 and Figure 2The driving assembly 5 includes a connecting plate 51 and an electric push rod 52. A cleaning assembly 4 is fixedly installed in the middle of the connecting plate 51. Both sides of the connecting plate 51 are fixedly connected to the protruding ends of the electric push rod 52. The fixed end of the electric push rod 52 is fixedly installed on the support frame 6. The support frame 6 is installed in the evaporation equipment, and the axis of the electric push rod 52 is parallel to the axis of the accommodating cylinder 3. Specifically, the cleaning assembly 4 includes a small reduction motor 41, a cleaning vertical rod 42, a cleaning brush head 43 and a rotating sleeve 44. The small reduction motor 41 is fixedly installed on the lower surface of the middle part of the connecting plate 51. The output shaft of the small reduction motor 41 passes through the connecting plate 51 (the two are rotatably connected by a bearing) and is connected to the cleaning vertical rod 42. The bottom end is fixedly connected, and the outer wall of the cleaning vertical rod 42 is slidably connected to the inner wall of the rotating sleeve 44, and the bottom end of the rotating sleeve 44 is fixedly arranged on the connecting plate 51. The arrangement of the rotating sleeve 44 can stably support the rotation of the cleaning vertical rod 42. The upper part of the cleaning vertical rod 42 is vertically extended in the accommodating tube 3, and a cleaning brush head 43 is fixedly arranged on the outer peripheral side of the top of the cleaning vertical rod 42; the axis of the cleaning vertical rod 42 and the cleaning brush head 43 coincide with the axis of the accommodating tube 3, that is, the cleaning vertical rod 42 and the cleaning brush head 43 are arranged opposite to the nozzle 21, and this arrangement ensures that the cleaning brush head 43 can pass through the evaporation hole in the nozzle 21 under the drive of the driving assembly 5 to clean it; the outer diameter of the cleaning vertical rod 42 is smaller than that of the accommodating tube 3, this design can ensure that the cleaning vertical rod 42 and the cleaning brush head 43 can move up and down smoothly in the accommodating tube 3, and ensure that the waste tank 8 can have space to be set in the accommodating tube 3; the outer diameter of the cleaning brush head 43 is equal to or greater than the inner diameter of the nozzle 21, and this design enables the cleaning brush head 43 to fully clean the evaporation material blocked in the nozzle 21; in the specific implementation, when the driving component 5 drives the cleaning component 4 to move up and down along the axial direction of the accommodating tube 3, the small reduction motor 41 is first started to drive the cleaning vertical rod 42 to rotate, thereby rotating the cleaning brush head 43 at the top of the cleaning vertical rod 42, and at the same time controlling the electric push rod 52 to drive the connecting plate 51 to move upward, thereby The cleaning vertical rod 42 and the cleaning brush head 43 are driven to move upward, so that the top of the cleaning vertical rod 42 pushes upward to open the semi-sealed cover 7 hingedly arranged on both sides of the top opening of the accommodating tube 3, and the cleaning brush head 43 at the top of the cleaning vertical rod 42 moves upward to the nozzle 21 of the crucible cover 2 and cleans and dredges the evaporation material blocked inside it. At the same time, the heating coil 10 arranged on the outer peripheral side of the nozzle 21 heats the evaporation material blocked inside the nozzle 21 to melt it, so as to facilitate the cleaning brush head 43 to clean it. When the cleaning and dredging of the nozzle 21 is completed, the electric push rod 52 is controlled to drive the connecting plate 51 to move downward, thereby driving the cleaning vertical rod 42 and the cleaning brush head 43 to move downward into the accommodating tube 3. In addition, the outer peripheral sides of the small reduction motor 41 and the electric push rod 52 are fixedly provided with a heat insulation protective shell 9, so as to prevent the high temperature from affecting the working performance of the small reduction motor 41 and the electric push rod 52.

[0019] In one embodiment, referring to Figure 1 The waste trough 8 is an annular structure, and the waste trough 8 is composed of an outer tube, an inner tube and a trough bottom plate. The outer tube of the waste trough 8 is fixedly installed on the bottom of the crucible body 1 on the outer peripheral side of the bottom opening of the accommodating tube 3 by screws. The inner tube of the waste trough 8 is located on the outer peripheral side of the cleaning vertical rod 42 and extends vertically to the inside of the accommodating tube 3. The top of the inner tube of the waste trough 8 is a bent plate and can contact the cleaning brush head 43, and the bent plate is set at a pointed end to facilitate cleaning the cleaning brush head 43. There is a gap between the inner tube of the waste trough 8 and the inner wall of the accommodating tube 3, so that the top bent plate of the inner tube of the waste trough 8 can shovel the evaporation waste on the cleaning brush head 43 away. Afterwards, the evaporation waste can fall into the waste trough 8 along the gap between the inner cylinder of the waste trough 8 and the inner wall of the accommodating cylinder 3; in the specific implementation, when the cleaning vertical rod 42 and the cleaning brush head 43 are driven downward to the accommodating cylinder 3 by the driving assembly 5, when the cleaning brush head 43 moves downward to contact the curved plate at the top of the inner cylinder of the waste trough 8, the curved plate can shovel the evaporation waste on the cleaning brush head 43 and drop it along the gap between the inner cylinder of the waste trough 8 and the inner wall of the accommodating cylinder 3 to the bottom plate of the waste trough 8, so as to facilitate subsequent processing and avoid the waste on the cleaning brush head 43 from solidifying and affecting the reuse of the cleaning brush head 43.

[0020] In one embodiment, referring to Figure 1 The movable ends of the two semi-sealed covers 7 symmetrically arranged at the top opening of each accommodating tube 3 are embedded with weight blocks 71. The setting of the weight blocks 71 ensures that when the cleaning brush head 43 is completely moved into the accommodating tube 3, the semi-sealed covers 7 hinged on both sides of the top opening of the accommodating tube 3 can resume the mutual resistance and seal the top opening of the accommodating tube 3 due to the gravity of the weight blocks 71 embedded at their movable ends.

[0021] Working principle: when it is necessary to clean the inner wall of the nozzle 21 of the crucible cover 2, the small reduction motor 41 is started to drive the cleaning vertical rod 42 of the cleaning assembly 4 to rotate, thereby making the cleaning brush head 43 at the top of the cleaning vertical rod 42 rotate, and at the same time, the electric push rod 52 of the driving assembly 5 is controlled to drive the connecting plate 51 to move upward, thereby driving the cleaning assembly 4 to move upward, so that the top of the cleaning vertical rod 42 pushes upward to open the semi-sealed covers 7 hingedly arranged on both sides of the top opening of the accommodating tube 3, and the cleaning brush head 43 at the top of the cleaning vertical rod 42 moves upward to the nozzle 21 of the crucible cover 2 and cleans and dredges the evaporation material blocked inside it. At the same time, the heating coil 10 arranged on the outer peripheral side of the nozzle 21 is heated to melt the evaporation material blocked inside the nozzle 21, so as to facilitate the cleaning brush head 43 to clean it. When the nozzle 2 is cleaned and dredged After the completion of the operation, the electric push rod 52 of the control driving assembly 5 drives the connecting plate 51 to move downward, thereby driving the cleaning assembly 4 to move downward, so that the cleaning vertical rod 42 and the cleaning brush head 43 move downward into the accommodating tube 3. When the cleaning brush head 43 moves downward to contact the bent plate at the top of the inner tube of the waste trough 8, the bent plate can shovel the waste on the cleaning brush head 43 and drop it along the inner tube of the waste trough 8 to the bottom plate of the trough 8, so as to facilitate subsequent processing and prevent the waste on the cleaning brush head 43 from solidifying and affecting the reuse of the cleaning brush head 43. When the cleaning brush head 43 is completely moved into the accommodating tube 3, the semi-sealed covers 7 hinged on both sides of the top opening of the accommodating tube 3 can resume the mutual resistance to seal the top opening of the accommodating tube 3 due to the gravity of the weighted blocks 71 embedded at their movable ends.

[0022] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, without departing from the spirit and scope defined by the claims of the present application.

Claims

1. A evaporation crucible for facilitating cleaning of evaporation holes, comprising a crucible body (1), a crucible cover (2), a containing tube (3), a cleaning assembly (4), a driving assembly (5), a support frame (6), a semi-sealed cover (7) and a waste trough (8), characterized in that: The crucible body (1) is covered with a crucible cover (2) on the top, and at least one nozzle (21) is fixedly provided on the crucible cover (2), and each of the nozzles (21) is connected to the inner cavity of the crucible body (1). A receiving tube (3) is vertically fixedly provided at the inner bottom of the crucible body (1) corresponding to the position of each nozzle (21), and the bottom end of the receiving tube (3) is connected to the outer side of the bottom of the crucible body (1), and the top end of the receiving tube (3) is arranged opposite to the nozzle (21), and the inner diameter of the receiving tube (3) is larger than the inner diameter of the nozzle (21), and each of the receiving tubes (3) is provided with a cleaning component (4), and the bottom of each cleaning component (4) extends outward. The accommodating tube (3) is fixedly mounted on the driving assembly (5), and the driving assembly (5) is fixedly mounted on the evaporation device via a supporting frame (6). Semi-sealed covers (7) are symmetrically arranged on both sides of the top opening of each accommodating tube (3), and the movable ends of the two semi-sealed covers (7) are in contact with each other and can completely cover the top opening of the accommodating tube (3). A waste trough (8) is fixedly mounted at the bottom of the crucible body (1) at the position of each accommodating tube (3), and each waste trough (8) is in contact with the cleaning assembly (4) in the corresponding accommodating tube (3). The waste trough (8) is used to clean the evaporation waste cleaned from the nozzle (21) on the cleaning assembly (4).

2. The evaporation crucible for facilitating cleaning of evaporation holes according to claim 1, characterized in that: The driving assembly (5) comprises a connecting plate (51) and an electric push rod (52), the cleaning assembly (4) is fixedly mounted in the middle of the connecting plate (51), both sides of the connecting plate (51) are fixedly connected to the protruding ends of the electric push rod (52), the fixed end of the electric push rod (52) is fixedly mounted on the supporting frame (6), and the axis of the electric push rod (52) is parallel to the axis of the accommodating cylinder (3).

3. The evaporation crucible for facilitating cleaning of evaporation holes according to claim 2, characterized in that: The cleaning assembly (4) comprises a small reduction motor (41), a cleaning vertical rod (42), a cleaning brush head (43) and a rotating sleeve (44); the small reduction motor (41) is fixedly installed in the middle of the connecting plate (51); the output shaft of the small reduction motor (41) is fixedly connected to the bottom end of the cleaning vertical rod (42); the outer wall of the cleaning vertical rod (42) is slidably connected to the inner wall of the rotating sleeve (44); the bottom end of the rotating sleeve (44) is fixedly arranged on the connecting plate (51); the upper part of the cleaning vertical rod (42) is vertically extended in the accommodating tube (3); the axis of the cleaning vertical rod (42) coincides with the axis of the accommodating tube (3); the outer diameter of the cleaning vertical rod (42) is smaller than the inner diameter of the accommodating tube (3); the cleaning brush head (43) is fixedly arranged on the outer peripheral side of the top of the cleaning vertical rod (42); and the outer diameter of the cleaning brush head (43) is equal to or larger than the inner diameter of the nozzle (21).

4. The evaporation crucible for facilitating cleaning of evaporation holes according to claim 3, characterized in that: The waste trough (8) is an annular structure, and the waste trough (8) is composed of an outer tube, an inner tube and a trough bottom plate. The outer tube of the waste trough (8) is fixedly installed on the bottom of the crucible body (1) on the outer peripheral side of the bottom opening of the accommodating tube (3). The inner tube of the waste trough (8) is located on the outer peripheral side of the cleaning vertical rod (42) and extends vertically into the interior of the accommodating tube (3). The top of the inner tube of the waste trough (8) is a bent plate and can contact the cleaning brush head (43). There is a gap between the inner tube of the waste trough (8) and the inner wall of the accommodating tube (3).

5. The evaporation crucible for facilitating cleaning of evaporation holes according to claim 3, characterized in that: A heat-insulating protective shell (9) is fixedly provided on the outer peripheral sides of the small-sized reduction motor (41) and the electric push rod (52).

6. The evaporation crucible for facilitating cleaning of evaporation holes according to claim 1, characterized in that: The movable ends of the two semi-sealed covers (7) symmetrically arranged at the top opening of each accommodating cylinder (3) are both embedded with weight blocks (71).

7. The evaporation crucible for facilitating cleaning of evaporation holes according to claim 1, characterized in that: An outer boss (31) is provided on the outer peripheral side of the top opening of each accommodating tube (3) extending outward.

8. The evaporation crucible for facilitating cleaning of evaporation holes according to claim 1, characterized in that: A heating coil (10) is provided on the outer peripheral side of each nozzle (21).

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