Crucible structure and coating system

Abstract

The utility model relates to a crucible structure and a coating system, comprising a crucible, the open end of which is provided with a first annular groove, and the inner wall of the crucible is provided with a step; the nozzle cover plate covers the opening end of the crucible, a second annular groove is formed in the nozzle cover plate, the first annular groove and the second annular groove form a sealing groove, a circular groove is further formed in the nozzle cover plate, and a containing position is formed between the circular groove and the step; the sealing strip is embedded in the sealing groove; and the metal plate is arranged in the accommodating position, the metal plate comprises a plate body and a bending part, the plate body is attached to the step, and the bending part is in close contact with the bottom surface of the circular groove. The crucible structure is provided with the metal plate, so that gas molecules in the crucible can overflow only after bypassing the metal plate and passing through a long path, and a first sealing structure is formed; and meanwhile, the sealing groove and the sealing strip between the crucible and the nozzle cover plate are mutually embedded to form a second sealing structure, so that the sealing performance of the whole structure can be ensured, and the final quality of a product is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of crucibles, in particular to a crucible structure and a coating system. Background Art

[0002] A crucible is a vessel or melting pot made of extremely refractory materials such as clay, graphite, porcelain clay, quartz or difficult-to-melt metals. It is a deep-bottomed bowl-shaped container. Crucibles are often used when solids need to be heated over a high fire.

[0003] The existing crucible is usually used in conjunction with a nozzle cover plate. The crucible and the nozzle cover plate are respectively provided with mutually matching protrusions and grooves. When connected, the protrusions and the grooves are embedded together to achieve a sealing effect.

[0004] However, due to the limited space between the crucible and the nozzle cover, the width of the protrusions and grooves cannot be too wide, so the sealing effect is poor; and after the crucible and the nozzle cover are opened and closed many times, the protrusions and grooves often wear or bump, affecting the sealing effect and thus affecting the final quality of the product. Utility Model Content

[0005] To this end, the technical problem to be solved by the present invention is to overcome the problem that in the prior art, a crucible is usually used in conjunction with a nozzle cover plate. The crucible and the nozzle cover plate are respectively provided with matching protrusions and grooves, which fit together to achieve a sealing effect when connected. However, due to the limited space between the crucible and the nozzle cover plate, the width of the protrusions and grooves cannot be too wide, resulting in poor sealing effect. In addition, the protrusions and grooves often wear or bump after the crucible and the nozzle cover plate are opened and closed repeatedly, affecting the sealing effect and thus the final quality of the product.

[0006] In order to solve the above technical problems, the utility model provides a crucible structure, comprising:

[0007] A crucible, wherein the open end of the crucible is provided with a first annular groove, and the inner wall of the crucible is provided with a step near the open end;

[0008] a nozzle cover plate, the nozzle cover plate being fitted over the open end of the crucible, the nozzle cover plate being provided with a second annular groove corresponding to the position of the first annular groove on a surface close to the crucible, the first annular groove and the second annular groove forming a sealing groove, and the nozzle cover plate being further provided with a circular groove on a surface close to the crucible, a receiving position being formed between the circular groove and the step;

[0009] a sealing strip, the sealing strip being embedded in the sealing groove;

[0010] A metal plate is arranged in the accommodating position, and the metal plate is a circular plate structure with bent edges, including a plate body and a bent portion extending along the edge of the plate body. A central through hole is provided on the plate body, and a side of the plate body away from the bent portion is in contact with the step surface of the step, and an end of the bent portion away from the plate body is in close contact with the bottom surface of the circular groove.

[0011] In one embodiment of the present invention, the first annular groove and the second annular groove are mirror images of each other.

[0012] In one embodiment of the present invention, the cross sections of the first annular groove and the second annular groove are both T-shaped, and the first annular groove and the second annular groove form a cross-shaped sealing groove.

[0013] In one embodiment of the present invention, the shape of the sealing strip matches the shape of the sealing groove.

[0014] In one embodiment of the present invention, the surface of the sealing strip is subjected to a micro-roughening treatment.

[0015] In one embodiment of the present invention, the height H1 of the metal plate is not less than the distance H2 between the step surface of the step and the bottom surface of the circular groove.

[0016] In one embodiment of the present invention, the bending portion includes a first bending section and a second bending section with continuous transition, the first bending section is located between the second bending section and the plate body, and the first bending section and the second bending section are both bent toward the side close to the center through hole.

[0017] In one embodiment of the present invention, the crucible includes a crucible body and an outer edge provided at an open end of the crucible body, and the first annular groove is provided on the outer edge.

[0018] In one embodiment of the present invention, the crucible is made of titanium, copper or aluminum.

[0019] A coating system comprises the crucible structure as described in any one of the above items.

[0020] The above technical solution of the utility model has the following advantages compared with the prior art:

[0021] The utility model describes a crucible structure and coating system, including a crucible, an open end of which is provided with a first annular groove, and an inner wall of the crucible is provided with a step; a nozzle cover plate, which covers the open end of the crucible, and a second annular groove is provided on the nozzle cover plate, the first annular groove and the second annular groove constitute a sealing groove, and a circular groove is also provided on the nozzle cover plate, and an accommodating position is formed between the circular groove and the step; a sealing strip, which is embedded in the sealing groove; a metal plate, which is arranged in the accommodating position, the metal plate includes a plate body and a bent portion, the plate body is in contact with the step, and the bent portion is in close contact with the bottom surface of the circular groove. The crucible structure of the utility model is provided with a metal plate between the crucible and the nozzle cover plate, and the metal plate is used to shield the connection position of the crucible and the nozzle cover plate, so that the gas molecules inside the crucible need to bypass the bent portion and then take a longer path along the contact position between the metal plate, the crucible and the nozzle cover plate before they can overflow, forming a first sealing structure to ensure the sealing effect of the entire structure; and groove structures that are mirror images of each other are provided on the crucible and the nozzle cover plate to form a sealing groove, and a sealing strip is embedded in the sealing groove to form a second sealing structure, thereby further improving the sealing performance of the crucible structure; the entire crucible structure has a simple structure, good sealing effect, and is suitable for practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0023] Figure 1 This is a schematic diagram of the overall structure of the crucible structure of the preferred embodiment of the present invention;

[0024] Figure 2 This is a schematic structural diagram of a crucible and a nozzle cover plate connected together in a crucible structure of a preferred embodiment of the present invention;

[0025] Figure 3 This is a structural diagram of a sealing strip of a crucible structure according to a preferred embodiment of the present invention;

[0026] Figure 4 is a cross-sectional view of a metal plate of a crucible structure according to a preferred embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of a first structural form of a metal plate of a crucible structure according to a preferred embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of a second structural form of a metal plate of a crucible structure according to a preferred embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of a third structural form of a metal plate of a crucible structure in a preferred embodiment of the present invention.

[0030] Explanation of the reference numerals in the accompanying drawings in the specification: 1. Crucible; 11. First annular groove; 12. Step; 2. Nozzle cover plate; 21. Second annular groove; 22. Circular groove; 3. Sealing strip; 4. Metal plate; 41. Plate body; 42. Bending portion; 421. First bending section; 422. Second bending section. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0032] Example 1

[0033] Reference Figure 1-Figure 7 As shown, a crucible structure of the utility model includes:

[0034] Crucible 1, a first annular groove 11 is formed at the open end of the crucible 1, and a step 12 is provided on the inner wall of the crucible 1 near the open end;

[0035] The nozzle cover plate 2 covers the open end of the crucible 1. A second annular groove 21 corresponding to the position of the first annular groove 11 is provided on the side of the nozzle cover plate 2 close to the crucible 1. The first annular groove 11 and the second annular groove 21 constitute a sealing groove. A circular groove 22 is also provided on the side of the nozzle cover plate 2 close to the crucible 1. A receiving position is formed between the circular groove 22 and the step 12.

[0036] Sealing strip 3, the sealing strip 3 is embedded in the sealing groove;

[0037] The metal plate 4 is arranged in the accommodating position. The metal plate 4 is a circular plate structure with bent edges, including a plate body 41 and a bent portion 42 extending along the edge of the plate body 41. A central through hole is provided on the plate body 41. The side of the plate body 41 away from the bent portion 42 is in contact with the step surface of the step 12, and the end of the bent portion 42 away from the plate body 41 is in close contact with the bottom surface of the circular groove 22.

[0038] Specifically, a receiving position is formed between the step 12 and the circular groove 22, and the metal plate 4 is arranged in the receiving position. The bent portion 42 of the metal plate 4 will shield the docking position of the crucible 1 and the nozzle cover plate 2. The gas molecules inside the crucible 1 need to bypass the bent portion 42 and then follow the tiny gap between the contact position of the metal plate 4 and the crucible 1 and the nozzle cover plate 2 before they can overflow from the docking position of the crucible 1 and the nozzle cover plate 2, forming a first sealing structure.

[0039] Specifically, a first annular groove 11 and a second annular groove 21 that match each other are respectively provided on the mating surfaces of the crucible 1 and the nozzle cover plate 2. A second sealing structure is formed by embedding the sealing strip 3 in the sealing groove formed by the first annular groove 11 and the second annular groove 21. The above two sealing structures ensure the sealing effect of the entire crucible structure, which is beneficial to the final quality of the product.

[0040] The utility model provides a crucible structure, in which a metal plate is arranged between the crucible 1 and the nozzle cover plate 2, and the connection position of the crucible and the nozzle cover plate is shielded by the bent portion of the metal plate, so that the gas molecules inside the crucible need to bypass the bent portion and then walk a longer path along the contact position of the metal plate, the crucible and the nozzle cover plate before they can overflow, forming a first sealing structure to ensure the sealing effect of the entire structure; and groove structures that are mirror images of each other are provided on the crucible 1 and the nozzle cover plate 2 to form a sealing groove, and a sealing strip is embedded in the sealing groove to form a second sealing structure, thereby further improving the sealing performance of the crucible structure; the entire crucible structure has a simple structure, good sealing effect, and is suitable for practical use.

[0041] Furthermore, the first annular groove 11 and the second annular groove 21 are mirror images of each other.

[0042] Reference Figure 1 、 Figure 2 and Figure 3 As shown, further, the cross-sections of the first annular groove 11 and the second annular groove 21 are both T-shaped, and the first annular groove 11 and the second annular groove 21 form a cross-shaped sealing groove. It is conceivable that the first annular groove 11 and the second annular groove 21 can also be configured into various other shapes, as long as the gas molecules need to traverse a longer path before escaping when passing through the sealing groove and the sealing strip 3.

[0043] Furthermore, the shape of the sealing strip 3 matches the shape of the sealing groove. Specifically, the sealing strip 3 is in close contact with the crucible 1 and the nozzle cover plate 2 in the sealing groove, playing a role in preventing gas molecules inside the crucible 1 from escaping.

[0044] Furthermore, the surface of the sealing strip 3 is subjected to a micro-roughening treatment. It is conceivable that when the roughness of the surface of the sealing strip 3 increases, the surface of the sealing strip 3 is microscopically uneven. When the sealing strip 3 is in close contact with the crucible 1 and the nozzle cover plate 2, under the action of pressure, the uneven surface of the sealing strip 3 is more tightly combined with the crucible 1 and the nozzle cover plate 2, which can achieve a better sealing effect. It should be noted that the melting point of the material used for the sealing strip 3 should be greater than the temperature of the working environment of the crucible 1 to prevent the sealing strip 3 from melting or vaporizing in a high-temperature environment and generating gaps, thereby affecting the sealing effect; and the thermal expansion coefficient of the material used for the sealing strip 3 should be smaller than the thermal expansion coefficient of the material used for the crucible 1 to avoid the generation of gaps between the sealing strip 3 and the crucible 1 and the nozzle cover plate 2 in a high-temperature environment and affecting the sealing effect.

[0045] Furthermore, the height H1 of the metal plate 4 is not less than the distance H2 between the step surface of the step 12 and the bottom surface of the circular groove 22. It is conceivable that, since the metal plate 4 can bend or deform within a certain range under the action of an external force, setting the height of the metal plate 4 to be not less than the distance between the step surface of the step 12 and the bottom surface of the circular groove 22 can ensure closer contact between the metal plate 4, the crucible 1, and the nozzle cover plate 2, thereby ensuring a good sealing effect.

[0046] Reference Figure 4 As shown, the bent portion 42 further includes a first bent section 421 and a second bent section 422 with a continuous transition. The first bent section 421 is located between the second bent section 422 and the plate body 41, and both the first bent section 421 and the second bent section 422 are bent toward the side closer to the central through hole. Specifically, the degree of bending of the first and second bent sections 421 and 422 can be adjusted according to actual conditions to ensure close contact between the metal plate 4, the crucible 1 and the nozzle cover plate 2.

[0047] It is conceivable that the metal plate 4 can be modified according to the actual situation; Figure 6 As shown, when the height of the metal plate 4 is too high, the bending angle of the first bending section 421 can be adjusted by extrusion correction to adjust the height of the metal plate 4 to meet the needs of use; Figure 7 As shown, when the height of the metal plate 4 is relatively low, the second bent section 422 can be bent twice, folding it toward the side away from the central through-hole. This allows the bent portion 42 to maintain close contact with the nozzle cover plate 2, thus meeting sealing requirements. It is also conceivable that the length of the second bent section 422 can be extended as needed to increase the flow path for gas molecules within the crucible 1 to escape, thereby enhancing the sealing effect of the metal plate 4 to a certain extent.

[0048] Furthermore, the crucible 1 includes a crucible body and an outer edge provided at an open end of the crucible body, and the first annular groove 11 is provided on the outer edge.

[0049] Furthermore, the crucible 1 is made of titanium, copper or aluminum, with copper being preferred.

[0050] Example 2

[0051] The utility model also discloses a film coating system, which includes the crucible structure as described in the first embodiment.

[0052] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A crucible structure, characterized in that: include: A crucible, wherein the open end of the crucible is provided with a first annular groove, and the inner wall of the crucible is provided with a step near the open end; a nozzle cover plate, the nozzle cover plate being fitted over the open end of the crucible, the nozzle cover plate being provided with a second annular groove corresponding to the position of the first annular groove on a surface close to the crucible, the first annular groove and the second annular groove forming a sealing groove, and the nozzle cover plate being further provided with a circular groove on a surface close to the crucible, a receiving position being formed between the circular groove and the step; a sealing strip, the sealing strip being embedded in the sealing groove; A metal plate is arranged in the accommodating position, and the metal plate is a circular plate structure with bent edges, including a plate body and a bent portion extending along the edge of the plate body. A central through hole is provided on the plate body, and a side of the plate body away from the bent portion is in contact with the step surface of the step, and an end of the bent portion away from the plate body is in close contact with the bottom surface of the circular groove.

2. The crucible structure according to claim 1, characterized in that: The first annular groove and the second annular groove are mirror images of each other.

3. The crucible structure according to claim 2, characterized in that: The cross sections of the first annular groove and the second annular groove are both T-shaped, and the first annular groove and the second annular groove form the cross-shaped sealing groove.

4. The crucible structure according to claim 1, wherein: The shape of the sealing strip matches the shape of the sealing groove.

5. The crucible structure according to claim 4, characterized in that: The surface of the sealing strip is subjected to a micro-roughening treatment.

6. The crucible structure according to claim 1, characterized in that: The height H1 of the metal plate is not less than the distance H2 between the step surface of the step and the bottom surface of the circular groove.

7. The crucible structure according to claim 1, characterized in that: The bending portion includes a first bending section and a second bending section with continuous transition, the first bending section is located between the second bending section and the plate body, and the first bending section and the second bending section are both bent toward a side close to the central through hole.

8. The crucible structure according to claim 1, characterized in that: The crucible includes a crucible body and an outer edge arranged at an open end of the crucible body, and the first annular groove is opened on the outer edge.

9. The crucible structure according to claim 1, characterized in that: The crucible is made of titanium, copper or aluminum.

10. A coating system, characterized in that: The crucible structure comprises the crucible structure according to any one of claims 1 to 9.

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