Multifunctional atmosphere protection device special for supercritical drying instrument

Abstract

The utility model provides a multifunctional atmosphere protection device special for a supercritical drying instrument, and belongs to the technical field of supercritical drying of laboratory instruments. The multifunctional atmosphere protection device special for the supercritical drying instrument comprises a supercritical drying instrument body and a multifunctional atmosphere protection device, and the multifunctional atmosphere protection device is installed on one side of the top end of the supercritical drying instrument body. The multifunctional atmosphere protection device comprises a protection device body, a visual window cover, an elastic pressing piece, a press-fitting flange, a silica gel gasket, an upper throttling valve, a lower throttling valve and a damping hinge, an opening is formed in one side of the protection device body, and the damping hinge is installed on the side of the opening. According to the utility model, a sample processing autoclave and a fluid control valve in the supercritical drying instrument can be completely sealed inside, and meanwhile, a series of equipment operations can be carried out in a completely isolated environment through the built-in sealing gloves, so that samples and external operators can be protected to the maximum extent in the isolated environment.

Description

Technical Field

[0001] The utility model relates to the technical field of supercritical drying of laboratory instruments, in particular to a special multifunctional atmosphere protection device for supercritical drying instruments. Background Art

[0002] Supercritical drying technology (SFD) extracts the dispersed phase in the sample without destroying the sample's network framework structure, producing block aerogels or powders with very high specific surface area and pore volume and low bulk density, refractive index and thermal conductivity. It has broad application prospects in catalysts, catalyst carriers, insulating materials, thermal insulation materials, glass and ceramics.

[0003] Existing supercritical dryers are all open-type designs, and the high-pressure sample pool and fluid control valves are in direct contact with the atmospheric environment. During the drying process, special samples may be affected by substances such as moisture and oxygen in the environment and cannot achieve effective drying effects. At the same time, some samples have toxic and harmful substances that diffuse, and cannot effectively protect experimental operators.

[0004] Therefore, we made improvements and proposed a multifunctional atmosphere protection device dedicated to supercritical dryers. Utility Model Content

[0005] In order to solve the problem of completely isolating the existing supercritical dryer from the influence of the air environment and the overflow of toxic and harmful substances in the early stage of sample preparation or the late stage of sample completion, the utility model provides a special multifunctional atmosphere protection device for a supercritical dryer.

[0006] The utility model is achieved in this way:

[0007] A multifunctional atmosphere protection device specially used for a supercritical dryer comprises a supercritical dryer body and the multifunctional atmosphere protection device. The multifunctional atmosphere protection device is installed on one side of the top of the supercritical dryer body. The multifunctional atmosphere protection device comprises a protection device body, a visible window cover, an elastic pressing sheet, a press-fit flange, a silicone gasket, an upper throttle valve, a lower throttle valve and a damping hinge. One side of the protection device body is provided with an opening, a damping hinge is installed on the side of the opening, the protection device body is movably connected to one side of the visible window cover through the damping hinge, the protection device body is provided with an elastic pressing sheet on one side close to the visible window cover, and the press-fit flanges are respectively connected to the press-fit flanges on both sides of the outer wall of the protection device body.

[0008] Furthermore, the bottom end of the protection device body is connected to a silicone gasket, and the bottom end of the silicone gasket is connected to one side of the top end of the supercritical dryer body.

[0009] The beneficial effect of adopting the above further solution is that the bottom of the protective device is designed with a corrosion-resistant self-sealing silicone gasket, which can effectively achieve positive pressure or vacuum sealing of the protective device.

[0010] Furthermore, the elastic pressing plate includes an elastic locking pin and a pressing plate, the elastic locking pin is rotatably connected to one side of the protective device body, one side of the elastic locking pin is sleeved with the pressing plate, and one side of the pressing plate is in contact with the outer wall of the visible window cover.

[0011] The beneficial effect of adopting the above further scheme is that when the window cover needs to be opened, the operator can manually pull up the elastic locking pin, and at the same time rotate it 90° to the left and right, so that the pressing piece deviates from the top of the window cover, making it convenient to lift the window cover upward; similarly, when the window cover is pulled down to close, lift the elastic locking pin and rotate it in an upward direction, and then release the locking pin, the locking pin will press the pressing piece and the window cover at the same time, making it completely sealed.

[0012] Furthermore, the damping hinge includes an upper hinge, a lower hinge and a spring damping member, one side of the upper hinge is connected to one side of the protective device body, one side of the lower hinge is connected to one side of the visible window cover, and the upper hinge is rotatably connected to one side of the lower hinge via a spring damping member.

[0013] The beneficial effect of adopting the above further solution is that it is used to achieve the window cover staying at any position, and the window cover opening and closing angle can achieve a maximum of 135° to maximize the field of view.

[0014] Furthermore, the top corner of the protection device body is connected to the upper throttle valve.

[0015] The beneficial effect of adopting the above further solution is that it is used for filling or sealing of inert gas.

[0016] Furthermore, the outer wall corners of the protection device body are connected to the lower throttle valve.

[0017] The beneficial effect of adopting the above further solution is that it is used for constant flow exhaust or cut-off sealing of inert gas.

[0018] Furthermore, the supercritical dryer body includes a fluid control valve pipeline system.

[0019] Furthermore, a valve operating handle is provided inside the atmosphere protection device.

[0020] The beneficial effects of the utility model are as follows: the multifunctional atmosphere protection device has a visual window that can be stopped at any position, and a protected sample can be placed in the open state, and an isolation protection function can be realized in the closed state; the multifunctional atmosphere protection device has an intake and exhaust throttle valve device, which is designed as an upper high and lower low offset opposed structure, which is more convenient for completely removing inert gas or internal impurity gas without dead angles, thereby maintaining the purity of the compartment environment; the multifunctional atmosphere protection device has an open bottom structure design, and a corrosion-resistant silicone gasket is designed at the bottom, which can be arbitrarily matched and used according to different supercritical drying equipment, and has high compatibility; the atmosphere protection device has multiple functions, and can realize normal pressure constant flow gas protection, positive pressure gas continuous flow protection, negative pressure vacuum protection, isolation glove online operation and other functions according to different user needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the assembly of a multifunctional atmosphere protection device for a supercritical dryer provided by the utility model;

[0023] Figure 2 A schematic diagram of a multifunctional atmosphere protection device for a supercritical dryer provided by the utility model;

[0024] Figure 3 This is a front view of a multifunctional atmosphere protection device for a supercritical dryer provided by the utility model;

[0025] Figure 4 The utility model provides a side view of a special multifunctional atmosphere protection device for a supercritical dryer.

[0026] In the figure: 1. supercritical dryer body; 2. multifunctional atmosphere protection device; 201. protection device body; 202. visual window cover; 203. elastic pressing piece; 2031. elastic locking pin; 2032. pressing piece; 204. press-fit flange; 205. silicone gasket; 206. upper throttle valve; 207. lower throttle valve; 208. damping hinge; 2081. upper hinge; 2082. lower hinge; 2083. spring damping member. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] like Figure 1 As shown, the multifunctional atmosphere protection device 2 is mainly used in conjunction with the supercritical dryer 1. The supercritical dryer body is an integral device, and a valve knob handle required for supercritical drying process flow control is configured on its front panel. The bottom of the multifunctional atmosphere protection device 2 is an open structure, which can completely contain all the valve handles on the supercritical dryer panel inside it. The bottom of the protection device is designed with a corrosion-resistant self-sealing silicone gasket 205, which can effectively achieve positive pressure or vacuum sealing of the protection device;

[0031] like Figure 1-Figure 4 As shown, the structure of the multifunctional atmosphere protection device includes a protection device body 201, which is mainly a plastic polymer organic glass fixedly connected by a sealant or a fastener; wherein the front is an ergonomically designed viewing window 202, which can clearly observe the state and phenomenon in the supercritical drying sample pool inside the protection device, and the viewing window cover 202 is installed on the protection device body by two damping hinges 208), and the damping hinge includes an upper hinge 2081, a lower hinge 2082 and a spring damping member 2083, which are used to realize that the window cover stays at any position, and the window cover can open and close at a maximum angle of 135°, so as to achieve the desired effect. The visual field is guaranteed to the maximum extent; a corrosion-resistant silicone sealing pad is also bonded inside the closed part of the window cover, and the lower end is press-fitted and fastened by an elastic pressing piece 203, wherein the elastic pressing piece 203 mainly comprises an elastic locking pin 2031 and a pressing piece 2032. When the window cover needs to be opened, the operator can manually pull up the elastic locking pin, and at the same time rotate it 90° to the left and right, so that the pressing piece deviates from the top of the window cover, making it convenient to lift the window cover upward; similarly, when the window cover is pulled down to close, lift the elastic locking pin and rotate it in an upward direction, and then release the locking pin, which will press the pressing piece and the window cover at the same time to make it completely sealed.

[0032] Two glove press-fit flanges 204 are designed in front of the multifunctional atmosphere protection device. The base of the built-in operating glove can be turned outward and put into the flange edge. At the same time, the flange press ring is used to buckle the glove flange position and the external environment to effectively achieve isolation and sealing. The operator can isolate the internal valve knob in this state to protect the operator from toxic and harmful substances to the greatest extent; throttle valves are designed and installed on the upper and right sides of the multifunctional atmosphere protection device, wherein the upper throttle valve 206 is mainly used for the filling or cut-off sealing of inert gas; the lower throttle valve 207 is mainly used for constant flow exhaust or cut-off sealing of inert gas;

[0033] In summary, by connecting to an inert gas source through the upper throttle valve 206 and adjusting the flow rate for discharge through the lower throttle valve 207, a constant flow inert gas protection environment under normal pressure or a certain positive pressure state can be provided for the sample processing position of the supercritical dryer; by connecting to a vacuum pump exhaust device through the upper throttle valve 206 and keeping the lower throttle valve 207 in a closed state, a completely vacuum ultra-pure environment can be provided for the sample processing position of the supercritical dryer, so as to protect the sample from external environmental factors to the greatest extent.

[0034] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multifunctional atmosphere protection device for a supercritical dryer, comprising a supercritical dryer body (1) and a multifunctional atmosphere protection device (2), characterized in that: A multifunctional atmosphere protection device (2) is installed on one side of the top of the supercritical dryer body (1). The multifunctional atmosphere protection device (2) comprises a protection device body (201), a visible window cover (202), an elastic pressing sheet (203), a press-fit flange (204), a silicone gasket (205), an upper throttle valve (206), a lower throttle valve (207) and a damping hinge (208). One side of the protection device body (201) is provided with an opening, and a damping hinge (208) is installed on the side of the opening. The protection device body (201) is movably connected to one side of the visible window cover (202) through the damping hinge (208). The protection device body (201) is provided with an elastic pressing sheet (203) on a side close to the visible window cover (202), and the outer wall of the protection device body (201) is connected to the press-fit flange (204) on both sides.

2. The multifunctional atmosphere protection device for supercritical drying apparatus according to claim 1, characterized in that: The bottom end of the protection device body (201) is connected to a silica gel gasket (205), and the bottom end of the silica gel gasket (205) is connected to one side of the top end of the supercritical dryer body (1).

3. The multifunctional atmosphere protection device for supercritical drying apparatus according to claim 1, characterized in that: The elastic pressing plate (203) comprises an elastic locking pin (2031) and a pressing plate (2032); the elastic locking pin (2031) is rotatably connected to one side of the protective device body (201); one side of the elastic locking pin (2031) is sleeved with the pressing plate (2032); and one side of the pressing plate (2032) is in contact with the outer wall of the visible window cover (202).

4. The multifunctional atmosphere protection device for supercritical drying apparatus according to claim 1, characterized in that: The damping hinge (208) comprises an upper hinge (2081), a lower hinge (2082) and a spring damping member (2083); one side of the upper hinge (2081) is connected to one side of the protective device body (201); one side of the lower hinge (2082) is connected to one side of the visible window cover (202); and the upper hinge (2081) is rotatably connected to one side of the lower hinge (2082) via the spring damping member (2083).

5. The multifunctional atmosphere protection device for supercritical drying apparatus according to claim 1, characterized in that: The top corner of the protection device body (201) is connected to the upper throttle valve (206).

6. The multifunctional atmosphere protection device for supercritical drying apparatus according to claim 1, characterized in that: The outer wall corner of the protection device body (201) is connected to the lower throttle valve (207).

7. The multifunctional atmosphere protection device for supercritical drying apparatus according to claim 1, characterized in that: The supercritical dryer body includes a fluid control valve pipeline system.

8. The multifunctional atmosphere protection device for supercritical drying apparatus according to claim 1, characterized in that: A valve operating handle is arranged inside the atmosphere protection device.

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