A sealing structure for preventing organic matter from volatilizing and polluting

Abstract

The utility model relates to the technical field of Pockels cells, and proposes a sealing structure for preventing organic volatilization pollution, comprising: an insulating shell, an electro-optical crystal arranged inside the insulating shell, the inner wall of the insulating shell being provided with a groove, the inner wall of the groove being provided with a window piece, and the inner wall of the groove being provided with a sealing rubber ring; the electro-optical crystal is placed in the insulating shell, and then the window piece is placed on the groove, and is placed on the window piece through a sealing rubber ring, the outer diameter of the sealing rubber ring is slightly larger than the inner wall of the groove, so that the outermost side of the sealing rubber ring is attached to the inner wall of the groove, and an end cover is placed on the end face of the insulating shell, a boss is provided on the side of the end cover facing the insulating shell, the outer diameter of the boss is slightly larger than the inner diameter of the sealing rubber ring, and after the boss is installed in the inner diameter of the sealing rubber ring, the sealing rubber ring will be squeezed toward the inner wall of the insulating shell, so that the inner wall of the insulating shell is tightly attached, so that external air cannot enter the interior of the insulating shell, thereby playing a sealing role.

Description

Technical Field

[0001] The utility model relates to the technical field of Pockels cells, in particular to a sealing structure for preventing organic matter from volatilizing and polluting. Background Art

[0002] Pockels cells are commonly used optical components in lasers, and crystals such as DKDP and BBO are commonly used crystals for electro-optical Q-switched lasers. These crystals can achieve Q-switching, mode selection, polarization and other functions in lasers, but these crystals have a common feature, which is that they are easy to deliquesce and must be sealed when used. With the development of lasers, high-power lasers are more and more widely used, and the requirements for Pockels cells are getting higher and higher. The problems of organic pollution and optical deformation caused by conventional sealing methods are also highlighted.

[0003] The conventional sealing method of the existing Pockels cell mostly adopts sealing rubber ring, but the sealing rubber ring has organic volatilization. Although it will be degassed before use, it can only play a role in reducing volatilization, and cannot completely eliminate this problem. In addition, in order to facilitate installation, the sealing rubber ring is generally installed first, and then the window piece is installed. The sealing rubber ring is applied with stress in the thickness direction through the window piece, and the sealing rubber ring is pressed against the shell to achieve the sealing effect. In this way, the same reaction pressure will be applied to the window piece, which will affect the optical uniformity of the window piece, and will change the coating tension on the window surface, reducing the damage threshold of the film layer. In order to solve the above problems, we designed a sealing structure to prevent organic volatilization pollution, which can effectively remove the residual organic volatilization of the sealing rubber ring, and also reduce the pressure on the window piece. Utility Model Content

[0004] The utility model provides a sealing structure for preventing organic matter from volatilizing and polluting, thereby solving the problem of poor sealing performance in the related technology.

[0005] The technical solution of the utility model is as follows: a sealing structure for preventing organic matter from volatilizing and polluting, comprising: an insulating shell;

[0006] An electro-optical crystal is arranged inside the insulating shell, the inner wall of the insulating shell is provided with a groove, the inner wall of the groove is provided with a window piece, the inner wall of the groove is provided with a sealing rubber ring, and the sealing rubber ring is located on one side of the window piece;

[0007] End covers are arranged at both ends of the insulating shell, and a protective mechanism is arranged on the outer side wall of the insulating shell.

[0008] Preferably, the protection mechanism comprises two protection plates arranged opposite to each other on the outer side wall of the insulating shell, a plurality of first springs are fixedly mounted on the outer side wall of the insulating shell, and one end of the plurality of first springs is connected to the insulating shell.

[0009] Preferably, two sliding grooves are formed on the outer side wall of the insulating shell relative to each other, and two sliding blocks are relatively slidably connected inside the two sliding grooves.

[0010] Preferably, two second springs are relatively fixedly mounted on the inner walls of the two slide grooves, and one end of the two second springs is connected to the two sliding blocks.

[0011] Preferably, two connecting plates are hinged on one side of the two sliding blocks, and the top ends of the two connecting plates are connected to the two protective plates.

[0012] Preferably, a damper is fixedly installed at the center of the two slide grooves, and a third spring is sleeved on the outer wall of the damper. The top end of the third spring is connected to the two protective plates, and the bottom end of the third spring is connected to the two slide grooves.

[0013] The working principle and beneficial effects of the utility model are:

[0014] The device does not add accessories, but only changes the size, assembly sequence and assembly method of the accessories to achieve better effects.

[0015] The sealing method of this device exposes the sealing rubber ring to the air. If there are still organic volatiles left in the sealing rubber ring, they can evaporate directly into the air. With the flow of air, the organic volatiles will not stay on the surface of the window piece, which is beneficial to the light damage resistance of the window piece. This avoids the previous situation where the residual organic volatiles are enclosed in the device and cannot be dispersed because the sealing rubber ring is installed inside the shell, and are stored on the surface of the window piece.

[0016] The sealing method of this design is to apply the main pressure in the radial direction of the sealing rubber ring, and only apply pressure to fix the window piece in the thickness direction. This can effectively reduce the pressure of the sealing rubber ring on the window piece, reduce the deformation of the window piece, and is beneficial to the optical uniformity and damage resistance of the window piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the slideway proposed in the utility model;

[0020] Figure 3 This is a schematic diagram of the cutaway three-dimensional structure of the insulating housing proposed by the utility model;

[0021] Figure 4 The utility model proposes Figure 3 A in the figure is an enlarged schematic diagram of the three-dimensional structure;

[0022] In the figure: 1. insulating shell; 2. electro-optical crystal; 3. groove; 4. window piece; 5. sealing rubber ring; 6. end cover; 7. protection mechanism; 70. protection plate; 71. first spring; 72. slide groove; 73. slider; 74. second spring; 75. connecting plate; 76. damper; 77. third spring. DETAILED DESCRIPTION

[0023] The following will be combined with 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 of 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.

[0024] Embodiment 1:

[0025] See also Figure 1 - Figure 4 , a sealing structure for preventing organic matter from volatilizing and polluting, comprising: an insulating shell 1;

[0026] An electro-optical crystal 2 is arranged inside an insulating housing 1, a groove 3 is provided on the inner wall of the insulating housing 1, a window piece 4 is provided on the inner wall of the groove 3, a sealing rubber ring 5 is provided on the inner wall of the groove 3, and the sealing rubber ring 5 is located on one side of the window piece 4;

[0027] End covers 6 are provided at both ends of the insulating housing 1 , and a protection mechanism 7 is provided on the outer side wall of the insulating housing 1 .

[0028] The utility model provides a technical scheme as follows: an electro-optical crystal 2 is placed in an insulating shell 1, and then a window piece 4 is placed on the groove 3, and a sealing rubber ring 5 is placed on the window piece 4, wherein the outer diameter of the sealing rubber ring 5 is slightly larger than the inner wall of the groove 3, so that the outermost side of the sealing rubber ring 5 is attached to the inner wall of the groove 3, and an end cover 6 is placed on the end face of the insulating shell 1, and a boss is provided on the side of the end cover 6 facing the insulating shell 1, and the outer diameter of the boss is slightly larger than the inner diameter of the sealing rubber ring 5. After the boss is installed in the inner diameter of the sealing rubber ring 5, the sealing rubber ring 5 will be squeezed toward the inner wall of the insulating shell 1, so that the inner wall of the insulating shell 1 is tightly attached, so that external air cannot enter the interior of the insulating shell 1, thereby achieving a sealing effect.

[0029] Embodiment 2:

[0030] Based on the first embodiment, in this embodiment: the protection mechanism 7 includes two protection plates 70 relatively arranged on the outer side wall of the insulating shell 1, a plurality of first springs 71 are fixedly installed on the outer side wall of the insulating shell 1, one end of the plurality of first springs 71 is connected to the insulating shell 1, two slide grooves 72 are relatively provided on the outer side wall of the insulating shell 1, two sliders 73 are relatively slidably connected inside the two slide grooves 72, two second springs 74 are relatively fixedly installed on the inner walls of the two slide grooves 72, one end of the two second springs 74 is connected to the two sliders 73, two connecting plates 75 are hinged on one side of the two sliders 73, the top ends of the two connecting plates 75 are connected to the two protection plates 70, a damper 76 is fixedly installed at the center of the two slide grooves 72, the outer side wall of the damper 76 is sleeved with a third spring 77, the top end of the third spring 77 is connected to the two protection plates 70, and the bottom end of the third spring 77 is connected to the two slide grooves 72.

[0031] The technical solution provided by this embodiment is: when the protective plate 70 is subjected to external force, the force is transmitted to the connecting plate 75 through the protective plate 70, so that the connecting plate 75 pushes the slider 73 to slide inside the slide groove 72 and squeezes the second spring 74. The second spring 74 contracts to buffer the external force, and is used in conjunction with the third spring 77 through the damper 76 to further buffer the external force. When the side of the protective plate 70 is subjected to external force, the first spring 71 can buffer the external force, thereby achieving the purpose of protecting the device and effectively preventing the external force from causing damage to the device.

[0032] The working principle of the utility model is as follows: the electro-optical crystal 2 is placed in the insulating shell 1, and then the window piece 4 is placed on the groove 3, and the sealing rubber ring 5 is placed on the window piece 4, the outer diameter of the sealing rubber ring 5 is slightly larger than the inner wall of the groove 3, so that the outermost side of the sealing rubber ring 5 is close to the inner wall of the groove 3, and the end cover 6 is placed on the end face of the insulating shell 1, and the end cover 6 has a boss on the side facing the insulating shell 1, and the outer diameter of the boss is slightly larger than the inner diameter of the sealing rubber ring 5. After the end cover 6 is installed in the inner diameter of the sealing rubber ring 5, the sealing rubber ring 5 will be squeezed toward the inner wall of the insulating shell 1, so that the inner wall of the insulating shell 1 is tightly attached, so that the external air cannot enter the insulation. The interior of the edge shell 1 plays a sealing role. When the protective plate 70 is subjected to external force, the force is transmitted to the connecting plate 75 through the protective plate 70, so that the connecting plate 75 pushes the slider 73 to slide inside the slide groove 72 and squeezes the second spring 74. The second spring 74 contracts to buffer the external force, and is used in conjunction with the third spring 77 through the damper 76 to further buffer the external force. When the side of the protective plate 70 is subjected to external force, the first spring 71 can buffer the external force, thereby achieving the purpose of protecting the device and effectively preventing the external force from causing damage to the device.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing structure for preventing organic matter from volatilizing and polluting, characterized in that: include: Insulating housing (1); An electro-optical crystal (2) is arranged inside the insulating housing (1), the inner wall of the insulating housing (1) is provided with a groove (3), the inner wall of the groove (3) is provided with a window piece (4), the inner wall of the groove (3) is provided with a sealing rubber ring (5), and the sealing rubber ring (5) is located on one side of the window piece (4); End covers (6) are arranged at both ends of the insulating shell (1), and a protective mechanism (7) is arranged on the outer side wall of the insulating shell (1).

2. A sealing structure for preventing organic matter from volatilizing and polluting according to claim 1, characterized in that: The protection mechanism (7) comprises two protection plates (70) arranged opposite to each other on the outer side wall of the insulating shell (1); a plurality of first springs (71) are fixedly mounted on the outer side wall of the insulating shell (1); one end of the plurality of first springs (71) is connected to the insulating shell (1).

3. A sealing structure for preventing organic matter from volatilizing and polluting according to claim 2, characterized in that: Two sliding grooves (72) are provided on the outer side wall of the insulating housing (1) relative to each other, and two sliding blocks (73) are relatively slidably connected inside the two sliding grooves (72).

4. A sealing structure for preventing organic matter from volatilizing and polluting according to claim 3, characterized in that: Two second springs (74) are relatively fixedly mounted on the inner walls of the two slide grooves (72), and one end of the two second springs (74) is connected to the two sliding blocks (73).

5. A sealing structure for preventing organic matter from volatilizing and polluting according to claim 4, characterized in that: Two connecting plates (75) are hingedly connected to one side of the two sliding blocks (73), and the top ends of the two connecting plates (75) are connected to the two protective plates (70).

6. A sealing structure for preventing organic matter from volatilizing and polluting according to claim 5, characterized in that: A damper (76) is fixedly installed at the center of the two slide grooves (72), and a third spring (77) is sleeved on the outer wall of the damper (76). The top end of the third spring (77) is connected to the two protective plates (70), and the bottom end of the third spring (77) is connected to the two slide grooves (72).

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