Sealing structure and box body structure applying same

Abstract

The utility model provides a sealing structure and a box body structure applying the sealing structure, and belongs to the technical field of test equipment. The sealing structure comprises an annular frame and a panel arranged on the annular frame; a first annular groove, a second annular groove and a third annular groove are sequentially formed in the annular frame from inside to outside, a first rubber sealing ring and a second rubber sealing ring are arranged in the first annular groove and the third annular groove respectively, and an air outlet is formed in the second annular groove; the first rubber sealing ring and the second rubber sealing ring are both attached to the panel in a sealed mode. The glove box panel can be used on a glove box, the sealing performance of the glove box can be guaranteed, the situation that gas in the glove box overflows out of the glove box and enters an open space due to the fact that the sealing performance between the panel and the glove box body is reduced is avoided, a human body is finally prevented from inhaling harmful gas in the glove box, and frequent panel dismounting and mounting caused by air leakage of the glove box are avoided. Therefore, the working time of the glove box is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of test equipment, and in particular relates to a sealing structure and a box structure applying the sealing structure. Background Art

[0002] Sealed boxes are often used in industry to isolate the gas flow inside and outside the box, protecting the materials inside the box from being exposed to the atmosphere outside the box. A slightly positive pressure is generally maintained inside the sealed box to ensure that if there is a loose seal, the gas inside the sealed box will overflow to the outside, and the gas outside the box will not enter the box.

[0003] A glove box is a common sealed box that generally has the following characteristics: (1) It is a sealed device, and high-purity inert gas, such as nitrogen, is injected into the glove box to isolate it from the air (including oxygen and dust in it); (2) The glove box generally maintains a slightly positive pressure, such as 2 to 10 mbar, and can achieve pressure monitoring and control functions through pressure sensors and solenoid valves; (3) The glove box is equipped with a panel with rubber gloves on it, and the glove box panel and the glove box frame are usually sealed with rubber gaskets; (4) Operators enter and exit the glove box with rubber gloves and perform related operations inside the glove box.

[0004] Glove boxes are widely used in the research and development of chemical, pharmaceutical and other industries. When used in the research and development of chemical, pharmaceutical and other industries, reagents can be stored in the glove box, reactors can be set up, etc. Inevitably, the inert gas atmosphere in the glove box will have a large amount of volatile chemical gases, which may corrode the rubber gasket between the glove box panel and the glove box frame. At the same time, operators need to frequently enter and exit gloves to perform related operations in the glove box. When operators enter the glove box at a fast speed, the pressure of the box will increase in a short time, and the pressure will be reduced through its own pressure control system, and part of the operator's body weight will be placed on the glove box panel, but the frequent fluctuations in pressure and load-bearing factors will also cause the rubber gasket to deform and shift, resulting in poor sealing. The above two factors together cause the gas in the glove box to overflow through the gasket to the outside of the glove box. When entering the glove box through rubber gloves, the pressure increases, and this phenomenon will be more obvious. The existing design cannot meet the increasingly stringent health and environmental protection requirements and needs to be optimized. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a sealing structure and a box structure using the sealing structure. When this sealing structure is used in a glove box, it can effectively prevent the sealing performance between the glove box panel and the glove box body from being reduced due to volatile chemical gases in the glove box, frequent fluctuations in the glove box pressure during use, and the load-bearing of the glove box panel, thereby preventing the gas in the glove box from overflowing outside the glove box.

[0006] The utility model is realized by the following technical solutions:

[0007] In a first aspect of the utility model, a sealing structure is provided, comprising an annular frame and a panel arranged on the annular frame;

[0008] The annular frame is provided with a first annular groove, a second annular groove and a third annular groove in sequence from the inside to the outside, the first annular groove and the third annular groove are respectively provided with a first rubber sealing ring and a second rubber sealing ring, and the second annular groove is provided with an air outlet, which is connected to a vacuum pump or a forced exhaust system;

[0009] The first rubber sealing ring and the second rubber sealing ring are both sealed to the panel.

[0010] The further improvement of the utility model is:

[0011] An annular protrusion is provided on the annular frame at a position close to the outer edge, and the annular protrusion is located outside the third annular groove;

[0012] The height of the annular protrusion is not greater than the thickness of the panel.

[0013] The further improvement of the utility model is:

[0014] The sealing structure further comprises a sealing plate, and the sealing plate is used for fixing the panel on the annular frame.

[0015] The further improvement of the utility model is:

[0016] The sealing plate is an annular plate, the outer edge of the annular plate is pressed on the annular protrusion, the inner edge is pressed on the panel, and the annular plate is fixedly connected to the annular protrusion.

[0017] The further improvement of the utility model is:

[0018] The sealing plate comprises four rectangular plates, and the four rectangular plates are connected end to end in sequence to form a ring structure.

[0019] The further improvement of the utility model is:

[0020] One of the two opposite long sides of the rectangular plate is pressed on the annular protrusion, and the other is pressed on the panel, and the rectangular plate is fixedly connected to the annular protrusion.

[0021] The further improvement of the utility model is:

[0022] The sealing structure further comprises a toggle clamp, a fixed end of which is fixed on the annular protrusion and a movable end of which is against the panel.

[0023] The second aspect of the utility model provides a sealed box body, wherein one end of the sealed box body is open, the sealing structure is arranged at the opening, and the panel is fastened to the annular frame.

[0024] A third aspect of the utility model provides a sealed box, wherein one end of the sealed box is open, the sealing structure is arranged at the opening, and the panel is rotatably connected to the annular frame;

[0025] The rotation connection can be achieved by providing rotation shafts at both ends of one side of the annular frame and connecting the panel via the rotation shafts, or by connecting one side of the annular frame and the panel via at least one hinge.

[0026] A fourth aspect of the utility model provides a glove box, comprising a main box body, one end of the main box body is open, and the opening is sealed with the sealing structure.

[0027] Compared with the prior art, the beneficial effects of the utility model are:

[0028] The sealing structure of the utility model can ensure the sealing performance of the sealed box body, and can effectively prevent the gas in the sealed box from overflowing into the open space outside the sealed box due to the decrease in the sealing performance between the panel and the sealed box body. When the sealing structure is used in a glove box, it can effectively prevent the gas in the glove box from overflowing to the outside of the glove box and entering the open space such as the laboratory, ultimately preventing the human body from inhaling harmful gases in the glove box, and avoiding frequent disassembly and assembly of the panel due to leakage of the glove box, thereby extending the working time of the glove box.

[0029] The first annular groove and the third annular groove in the utility model can effectively prevent the first rubber sealing ring and the second rubber sealing ring from shifting and deforming, and the second annular groove can quickly evacuate the gas in the sealing box that passes over the first rubber sealing ring.

[0030] The utility model enables the sealing performance of the glove box to meet the increasingly stringent safety and environmental protection requirements, and better protects the health of glove box operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front view of a glove box;

[0032] Figure 2 It is the main view of the ring frame;

[0033] Figure 3 is a partial cross-sectional enlarged view of an embodiment of a glove box;

[0034] Figure 4 It is a partial cross-sectional enlarged view of another embodiment of the glove box.

[0035] In the figure,

[0036] 1. Main box;

[0037] 2. Ring frame;

[0038] 3. Panel;

[0039] 4. a first annular groove;

[0040] 5. A second annular groove;

[0041] 6. a third annular groove;

[0042] 7. Annular protrusion;

[0043] 8. The first rubber sealing ring;

[0044] 9. Second rubber sealing ring;

[0045] 10. Air outlet;

[0046] 11. Seal the board;

[0047] 12. Bolts;

[0048] 13. Elbow clamp. DETAILED DESCRIPTION

[0049] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0050] [Example 1]

[0051] The utility model embodiment provides a sealing structure, such as Figure 1 to Figure 2 As shown, it includes an annular frame 2 and a panel 3 arranged on the annular frame 2.

[0052] The annular frame 2 is provided with a first annular groove 4, a second annular groove 5 and a third annular groove 6 in sequence from inside to outside, a first rubber sealing ring 8 and a second rubber sealing ring 9 are provided in the first annular groove 4 and the third annular groove 6 respectively, and an air outlet 10 is provided in the second annular groove 5;

[0053] The first rubber sealing ring 8 and the second rubber sealing ring 9 are both sealed and fitted with the panel 3 .

[0054] It should be noted that the side located at the inner edge of the annular frame 2 is the inner side, and the side located at the outer edge of the annular frame 2 is the outer side.

[0055] The corners of the annular frame 2 may be configured as arc shapes, and the corners of the first annular groove 4 , the second annular groove 5 and the third annular groove 6 may also be configured as arc shapes.

[0056] By arranging the sealing structure of the present embodiment at one end of the opening of the sealed box body to ensure the sealing performance of the sealed box body, during operation, if gas passes through the first annular groove 4 and enters the second annular groove 5, a ventilation pipe extending out of the sealed box body can be connected to the air outlet 10 on the second annular groove 5, and one end of the ventilation pipe is connected to a vacuum pump or an exhaust system to collect or forcibly discharge the gas. At the same time, the second rubber sealing ring 9 of the third annular groove 6 can effectively prevent the gas that passes through the first annular groove 4 from continuing to pass through the third annular groove 6 and overflowing outside the sealed box into the open space.

[0057] [Example 2]

[0058] The first annular groove 4 is arranged close to the inner side of the annular frame 2. The first annular groove 4 is mainly used to place the first rubber sealing ring 8, which plays a limiting role for the first rubber sealing ring 8, and can effectively prevent the displacement and deformation of the first rubber sealing ring 8, thereby achieving a better sealing effect and preventing gas from overflowing outward from the contact surface between the annular frame 1 and the panel 2.

[0059] The shape of the first annular groove 4 is not specifically limited, and its cross section can be square or arc-shaped, etc., as long as it can play the corresponding function.

[0060] [Example 3]

[0061] The second annular groove 5 is located between the first annular groove 4 and the third annular groove 6 .

[0062] The second annular groove 5 is provided with an air outlet 10, which serves to guide the gas. During the operation of the glove box, if gas passes through the first annular groove 4 and enters the second annular groove 5, the gas can be collected or forcibly discharged by connecting a vacuum pump or exhaust system outside the glove box to the air outlet 10 on the second annular groove 5.

[0063] One or more, preferably one, air outlet 10 is provided, and the air outlet 10 is connected to a vacuum pump located outside the glove box or an exhaust system of the glove box through a connecting pipe, and negative pressure power is provided by the fan of the vacuum pump or the exhaust system. At this time, the second annular groove 5 is in a negative pressure state, and the gas that crosses the first annular groove 4 and enters the second annular groove 5 can be quickly evacuated, which can effectively prevent the gas from overflowing outside the sealed box into the open space.

[0064] The shape of the second annular groove 5 is not specifically limited, and its cross section can be any shape such as square, arc, trapezoid, etc., as long as it can play the corresponding function.

[0065] [Example 4]

[0066] The third annular groove 6 is arranged close to the outer side of the annular frame 2. The third annular groove 6 is mainly used to place the second rubber sealing ring 9, and plays a limiting role for the second rubber sealing ring 9, which can effectively prevent the displacement and deformation of the second rubber sealing ring 9, and achieve a better sealing effect, and can effectively prevent the gas that crosses the first annular groove 4 from continuing to cross the third annular groove 6 and overflowing outside the glove box.

[0067] The shape of the third annular groove 6 is not specifically limited, and its cross section can be square or arc-shaped, etc., as long as it can play the corresponding function.

[0068] [Example 5]

[0069] like Figure 3 As shown, the sealing structure further includes a sealing plate 11 , and the sealing plate 11 is used to fix the panel 3 on the annular frame 2 .

[0070] Specifically, an annular protrusion 7 is provided on the annular frame 2 near the outer edge, and the annular protrusion 7 is located on the outside of the third annular groove 6. The height of the annular protrusion 7 is not greater than the thickness of the panel 3, so that the panel 3 can be better fixed on the annular frame 2 through the sealing plate 11.

[0071] The sealing plate 11 is an annular plate, wherein the outer edge of the annular plate is pressed on the annular protrusion 7, the inner edge is pressed on the panel 3, and the annular plate is fixedly connected to the annular protrusion 7. Specifically, a plurality of threaded holes are provided on the annular protrusion 7, and a plurality of threaded through holes corresponding to the threaded holes are provided near the outer edge of the annular plate. Bolts pass through the threaded through holes and the threaded holes in turn and are tightened with nuts, so as to fix the panel 3 on the annular frame 1 through the sealing plate 11.

[0072] The corners of the annular plate may be arranged in an arc shape, and the width of the annular plate is determined based on the position that can press on the annular protrusion 7 and the edge of the panel 3 at the same time.

[0073] Alternatively, the sealing plate 11 includes four rectangular plates, which are connected end to end in sequence to form an annular structure. Preferably, two adjacent rectangular plates can be connected by an arc-shaped connector. One of the two opposite long sides of the rectangular plate is pressed on the annular protrusion 7, and the other is pressed on the panel 3, and the rectangular plate is fixedly connected to the annular protrusion 7. Specifically, a plurality of threaded holes are provided on the annular protrusion 7, and a plurality of threaded through holes corresponding to the threaded holes are provided on the four rectangular plates. Bolts pass through the threaded through holes and the threaded holes in sequence and are tightened with nuts, so as to fix the panel 3 on the annular frame 2 through the sealing plate 11.

[0074] The width of the four rectangular plates is based on the position that can be pressed on the annular protrusion 7 and the edge of the panel 3 at the same time.

[0075] [Example 6]

[0076] like Figure 4 As shown, the sealing structure further comprises an elbow clamp 13, and the elbow clamp 13 is used to fix the panel 3 on the annular frame 2. Preferably, a plurality of elbow clamps 13 are arranged on the annular frame 2 along the circumferential direction.

[0077] Specifically, an annular protrusion 7 is provided on the annular frame 2 near the outer edge, and the annular protrusion 7 is located on the outside of the third annular groove 6. The height of the annular protrusion 7 is not greater than the thickness of the panel 3, so that the panel 3 can be better fixed to the annular frame 2 by the elbow clamp 13.

[0078] The fixed end of the elbow clamp 13 is fixed on the annular protrusion 7 , and the movable end abuts against the panel 3 , so as to fix the panel 3 on the annular frame 2 .

[0079] The elbow clamp used in the embodiment of the utility model is a prior art, for example, reference may be made to Chinese patent publication CN102186631A, which will not be described in detail here.

[0080] [Example 7]

[0081] The utility model provides a sealed box body, one end of which is open, and a sealing structure is provided at the opening, specifically:

[0082] The sealing structure includes an annular frame 2 and a panel 3 arranged on the annular frame 2.

[0083] The annular frame 2 is provided with a first annular groove 4, a second annular groove 5 and a third annular groove 6 in sequence from inside to outside, a first rubber sealing ring 8 and a second rubber sealing ring 9 are provided in the first annular groove 4 and the third annular groove 6 respectively, and an air outlet 10 is provided in the second annular groove 5;

[0084] The first rubber sealing ring 8 and the second rubber sealing ring 9 are both sealed and fitted with the panel 3 .

[0085] Preferably, the annular frame 2 can be integrally formed with the sealed box body, or can be sealed and fixed at the opening of the sealed box body, wherein the panel 3 can be fastened or rotatably connected to the annular frame 2.

[0086] The rotation connection can be achieved by setting a rotation axis at both ends of the outer edge of one side of the annular frame 2 and connecting it to the panel 3 through the rotation axis, or by connecting one side of the annular frame 2 and the panel 3 through at least one hinge.

[0087] [Example 8]

[0088] The utility model embodiment provides a glove box, such as Figure 1 As shown, it includes a main box body 1, one end of which is open, and a sealing structure is sealed at the opening of the main box body 1, specifically:

[0089] The sealing structure includes an annular frame 2 and a panel 3 arranged on the annular frame 2.

[0090] The annular frame 2 is provided with a first annular groove 4, a second annular groove 5 and a third annular groove 6 in sequence from inside to outside, a first rubber sealing ring 8 and a second rubber sealing ring 9 are provided in the first annular groove 4 and the third annular groove 6 respectively, and an air outlet 10 is provided in the second annular groove 5;

[0091] The first rubber sealing ring 8 and the second rubber sealing ring 9 are both sealed and fitted with the panel 3 .

[0092] Preferably, the annular frame 2 can be integrally formed with the main box body 1 , or can be sealed and fixed at the opening of the main box body 1 .

[0093] It should be noted that the side located at the inner edge of the annular frame 2 is the inner side, and the side located at the outer edge of the annular frame 2 is the outer side.

[0094] The corners of the annular frame 2 may be configured as arc shapes, and the corners of the first annular groove 4 , the second annular groove 5 and the third annular groove 6 may also be configured as arc shapes.

[0095] The panel 3 is made of transparent material, which is convenient for observing the specific conditions inside the glove box during operation.

[0096] The panel 3 is provided with a circular hole, preferably, two circular holes are provided, and gloves are sealed and connected to the circular holes.

[0097] During the operation of the glove box, if gas passes through the first annular groove 4 and enters the second annular groove 5, a ventilation pipe extending from the main box body can be connected to the air outlet 10 on the second annular groove 5, and one end of the ventilation pipe is connected to a vacuum pump or an exhaust system to collect or forcibly discharge the gas. At the same time, the second rubber sealing ring 9 of the third annular groove 6 can effectively prevent the gas that passes through the first annular groove 4 from continuing to pass through the third annular groove 6 and overflowing to the outside of the glove box into open spaces such as laboratories, and ultimately prevent the human body from inhaling harmful gases in the glove box, avoid frequent disassembly and assembly of the glove box panel due to air leakage in the glove box, and thereby extend the working time of the glove box.

[0098] The utility model enables the sealing performance of the glove box to meet the increasingly stringent safety and environmental protection requirements, and better protects the health of glove box operators.

[0099] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0101] The above technical solution is only one implementation method of the utility model. For those skilled in the art, it is easy to make various types of improvements or modifications based on the principles disclosed in the utility model, and it is not limited to the technical solution described in the above specific embodiments of the utility model. Therefore, the above description is only preferred and does not have a restrictive meaning.

Claims

1. A sealing structure, characterized in that: It comprises an annular frame and a panel arranged on the annular frame; The annular frame is provided with a first annular groove, a second annular groove and a third annular groove in sequence from the inside to the outside, a first rubber sealing ring and a second rubber sealing ring are respectively provided in the first annular groove and the third annular groove, and an air outlet is provided in the second annular groove; The first rubber sealing ring and the second rubber sealing ring are both sealed to the panel.

2. The sealing structure according to claim 1, characterized in that: An annular protrusion is provided on the annular frame at a position close to the outer edge, and the annular protrusion is located outside the third annular groove; The height of the annular protrusion is not greater than the thickness of the panel.

3. The sealing structure according to claim 2, characterized in that: The sealing structure further comprises a sealing plate, and the sealing plate is used for fixing the panel on the annular frame.

4. The sealing structure according to claim 3, characterized in that: The sealing plate is an annular plate, the outer edge of the annular plate is pressed on the annular protrusion, the inner edge is pressed on the panel, and the annular plate is fixedly connected to the annular protrusion.

5. The sealing structure according to claim 3, characterized in that: The sealing plate comprises four rectangular plates, and the four rectangular plates are connected end to end in sequence to form a ring structure.

6. The sealing structure according to claim 5, characterized in that: One of the two opposite long sides of the rectangular plate is pressed on the annular protrusion, and the other is pressed on the panel, and the rectangular plate is fixedly connected to the annular protrusion.

7. The sealing structure according to claim 2, characterized in that: The sealing structure further comprises a toggle clamp, a fixed end of which is fixed on the annular protrusion and a movable end of which is against the panel.

8. A sealed box, characterized in that: The sealed box body has an opening at one end, and the sealing structure as claimed in claim 1 is arranged at the opening, and the panel is tightly connected to the annular frame.

9. A sealed box, characterized in that: The sealed box body has an opening at one end, and the sealing structure as claimed in claim 1 is arranged at the opening, and the panel is rotatably connected to the annular frame.

10. A glove box, characterized in that: It comprises a main box body, one end of which is open, and the opening is sealed with a sealing structure as described in any one of claims 1 to 7.

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