A vacuum adsorption material delivery device and delivery method thereof

Abstract

The present invention discloses a device for delivering adsorbent materials in a vacuum and a delivery method thereof, wherein the delivery device comprises a vacuum cavity, wherein a vacuum container is arranged in the vacuum cavity, and a cantilever connects the vacuum container and the vacuum cavity; the adsorbent material is stored in the vacuum container, and a vacuum port is arranged at the upper end of the vacuum container, and vacuum is drawn through the vacuum port so that the adsorbent material maintains a vacuum environment in the vacuum container; the vacuum container is provided with a cover and a sealing ring, and the cover and the sealing ring serve as a release port for the adsorbent material, and are arranged at the lower end of the vacuum container, and the pressure difference between the inside and outside of the vacuum cavity is changed by vacuuming the vacuum cavity, so as to open and close the vacuum container and deliver the adsorbent material in the vacuum container. The delivery device of the present invention does not require a special interface, which effectively reduces the risk of vacuum degradation, and the adsorbent can be naturally released during the vacuum extraction process, which reduces the operation steps and improves the efficiency, can be adapted to any container, and has a simple operation method, and achieves a reliable adsorption effect.

Description

Technical Field

[0001] The present invention relates to the field of vacuum technology, and in particular to a device for delivering adsorption materials in a vacuum and a delivery method thereof. Background Art

[0002] Vacuum treatment is a common cavity treatment method in the industrial field. After the vacuum cavity is evacuated, there will usually be a certain degree of outgassing. The commonly used method is to place adsorbent materials such as molecular sieves and hydrogen absorbers in the vacuum cavity to maintain the vacuum degree.

[0003] The traditional method of placing the adsorbent material is to quickly place it in the vacuum chamber before closing it, and then immediately evacuate it. However, no matter how quickly the adsorbent material is placed, its adsorption effect will still decrease to varying degrees due to contact with the air. At the same time, the process cannot be standardized due to different operations of operators.

[0004] Prior art document 1 (CN 115435182 B) discloses a vacuum pipeline and its preparation process, belonging to the field of pipeline technology. The vacuum pipeline includes an outer tube and an inner tube arranged coaxially, and a sandwich space is formed between the outer wall of the inner tube and the inner wall of the outer tube; a cylinder is located in the sandwich space, sleeved on the inner tube, and its two ends are connected to the inner tube to form a seal; a filling space is formed between the inner wall of the cylinder and the outer wall of the inner tube; an adsorbent package is fixedly arranged in the filling space; but the disadvantage of the prior art is that the technology uses thermoplastic materials for sealing, and needs to be heated and released after the vacuum extraction is completed, so a special heating device and an interface for electric heating are required. The increase in interfaces means that the possibility of vacuum degradation increases. Therefore, although the prior art solves the adsorbent release problem, it increases the risk of vacuum degradation. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the present invention provides a delivery device for delivering adsorption materials after a cavity enters a vacuum state.

[0006] The present invention adopts the following technical solution.

[0007] The first aspect of the present invention discloses a vacuum adsorption material delivery device, comprising a vacuum cavity, a vacuum container is arranged in the vacuum cavity, and a cantilever connects the vacuum container and the vacuum cavity; the adsorption material is stored in the vacuum container, a vacuum extraction port is arranged at the upper end of the vacuum container, and vacuum is drawn through the vacuum extraction port so that the adsorption material maintains a vacuum environment in the vacuum container;

[0008] The vacuum container is provided with a cover and a sealing ring, which serve as a release port for the adsorbent material and are arranged at the lower end of the vacuum container. The cover and the sealing ring are used to open and close the vacuum container and to release the adsorbent material into the vacuum container by evacuating the vacuum cavity to change the pressure difference between the inside and the outside.

[0009] Preferably, the vacuum container is adjusted according to the shape of the container into which the adsorbent material needs to be placed, so as to be compatible with the shape of the container into which the adsorbent needs to be released.

[0010] Preferably, the connection position between the cantilever, the vacuum container and the vacuum cavity is moved according to different shapes of the vacuum container to support the vacuum container.

[0011] Preferably, the cantilever is connected to the vacuum container and the vacuum chamber in a fixed or detachable manner.

[0012] The second aspect of the present invention discloses a method for placing a vacuum adsorption material placing device, based on a vacuum adsorption material placing device, comprising the following steps:

[0013] Step S1, preparing the delivery device;

[0014] Step S2, using a delivery device to evacuate;

[0015] Step S3, adsorption material release step.

[0016] Preferably, the step S1 specifically includes:

[0017] Step S1.1, select the shape, size, hardness and material of the vacuum container according to different usage scenarios. The shape of the vacuum container should comply with the standard formula for pressure vessel design;

[0018] Step S1.2, calculating the usage of the adsorption material according to the vacuum container quantitative formula;

[0019] Step S1.3, placing the adsorbent material in a vacuum container.

[0020] Preferably, in step S1.1, the pressure vessel design standard formula is:

[0021] ,

[0022] Where S is the vessel wall thickness, P is the design pressure, D is the diameter, and δ t is the allowable stress at the design temperature, φ is the welding coefficient, and C is the corrosion allowance.

[0023] Preferably, in step S1.2, the quantitative formula of the vacuum container is:

[0024] ,

[0025] in, is the mass of the adsorbent, is the quality of the capping, is the friction coefficient, is the cross-sectional area of ​​the cover, p is the pressure difference between inside and outside, and g is the gravity constant.

[0026] Preferably, the step S2 specifically includes: after the cover is closed, evacuating the vacuum container, placing the vacuum container in the vacuum cavity, and connecting the vacuum container to the vacuum cavity via a cantilever.

[0027] Preferably, the step S3 specifically includes: when the vacuum degree of the vacuum cavity reaches the release point calculated in step S1.2, the stability of the internal and external pressure difference is destroyed, the cover falls off under the action of gravity, and the internal adsorbent is naturally released.

[0028] The beneficial effect of the present invention is that, compared with the prior art,

[0029] (1) The delivery device of the present invention does not require any heating device, special interface, or new interface. The adsorbent can be released only by relying on the characteristics of the vacuum itself, which effectively reduces the risk of vacuum degradation. In addition, the adsorbent can be released naturally during the vacuum extraction process, which reduces the number of operation steps and improves efficiency.

[0030] (2) The delivery device of the present invention can be adapted to any existing container that is difficult to modify, and the adsorbent release effect can be improved without modifying the container or adding other interfaces;

[0031] (3) The delivery device of the present invention is easy to operate and can effectively prevent the adsorption material from coming into contact with air during delivery, thereby achieving a reliable adsorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural diagram of the vacuum adsorption material delivery device of the present invention;

[0033] Figure 2 This is a structural diagram of the rotating shaft of the vacuum adsorption material delivery device of the present invention; in the figure: 1. vacuum extraction port; 2. vacuum cavity; 3. cantilever; 4. adsorption material; 5. vacuum container; 6. sealing ring; 7. sealing cover; 8. magnetic attraction structure; 9. rotating shaft; 10. electromagnet. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The embodiments described in this application are only part of the embodiments of the present invention, not all of them. Based on the spirit of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0035] like Figure 1 As shown, Example 1 of the present invention provides a vacuum adsorption material delivery device, and the device of the present invention includes a vacuum chamber 2, a vacuum container 5, a cantilever 3, a sealing ring 6, a vacuum outlet 1 and a sealing cover 7.

[0036] Wherein, the cantilever 3 is connected to the vacuum container 5 and the vacuum chamber 2;

[0037] The adsorption material 4 is stored in a vacuum container 5. The vacuum port 1 is arranged at the upper end of the vacuum container 5. The vacuum port 1 is used to evacuate the adsorption material 4 so that the vacuum environment is always maintained.

[0038] The cover 7 and the sealing ring 6 are used as the release port of the adsorbent material 4 and are arranged at the lower end of the vacuum container 5 to evacuate the vacuum chamber 2 and realize automatic opening and closing through the internal and external pressure difference.

[0039] In a preferred but non-limiting embodiment of the present invention, the vacuum container 5 can be set to different sizes and shapes according to different engineering practice scenarios; including but not limited to special-shaped vacuum cavities with varying cross-sections, etc.;

[0040] Further preferably, the vacuum container 5 of the present invention can be adjusted accordingly according to the shape of the container into which the adsorbent material is placed. In the present device, the vacuum container 5 is used as a container for the adsorbent, and its shape and size have no effect on the release of the adsorbent. Therefore, the present invention can be adapted to almost all containers that require the release of the adsorbent.

[0041] For example, in some vacuum containers, the internal environment of the container is complex and the available space is small. In this environment, the present invention can manufacture a container of a special shape to place the adsorbent according to the actual situation;

[0042] It is worth noting that the double-layer vacuum structure of the cryogenic container is usually used to insulate the inner container, and the quality of the vacuum will directly affect the insulation effect of the cryogenic container. Whether it is a stainless steel container or a container made of other materials, degassing is inevitable during use, resulting in vacuum degradation, and conventional adsorbents are less effective during the release process. Other technologies require heating, which increases the loss of the cryogenic container. The present invention can effectively avoid the above situation.

[0043] As for the existing container, the present invention only needs to hang the finished vacuum container 5 in the container that needs the adsorbent during the container maintenance process, without modifying the container and adding other interfaces. If other interfaces are added, such as heating interfaces, a rubber sealing structure is usually used. This structure will inevitably cause vacuum degradation after long-term use. The more interfaces there are, the faster the degradation. The present invention can effectively solve the above problems.

[0044] In a preferred but non-limiting embodiment of the present invention, the connection method between the cantilever 3 and the vacuum container 5 and the vacuum chamber 2 can be moved and changed according to the different shapes of the vacuum container 5, but it is worth noting that the position of the cantilever 3 cannot block the opening of the vacuum container 5.

[0045] Further preferably, the cantilever 3 is not limited to being arranged above the vacuum container 5. As a supporting component of the vacuum chamber, the cantilever 3 only provides a supporting function for the vacuum container 5, so the cantilever 3 can be adjusted accordingly according to the shape of the vacuum container into which the adsorbent is placed, such as being placed on the side or directly connected to the vacuum container.

[0046] Secondly, for scenarios that require frequent disassembly, the cantilever 3 can also be designed as a quick-connect structure such as a hook or a buckle.

[0047] In a preferred but non-limiting embodiment of the present invention, in order to make it easier to fall under the condition of satisfying the vacuum degree, the shapes of the opening and the cover 7 can be adjusted accordingly. The shape of the cover 7 mainly depends on the vacuum container environment where the adsorbent needs to be released. For vacuum containers with a large space and a simple environment, the cover 7 is preferably round; for vacuum containers with a small space or a complex environment, the cover 7 can be adjusted according to actual conditions. Since the cover 7 is sealed by the sealing ring 6, the shape is not important for the cover 7. In some extreme environments, the cover 7 can also be made into a hollow structure to reduce its own weight.

[0048] In a preferred but non-limiting embodiment of the present invention, the vacuum container 5 is cylindrical in shape, but according to the above description, the shape of the vacuum container 5 can be redesigned with reference to the vacuum container actually deployed. As a storage container for the adsorbent, the shape and size of the vacuum container 5 are not too restricted, and the material can be stainless steel, epoxy resin, etc. These materials are strong and will not break or break due to vacuum negative pressure. At the same time, these materials have a low degassing rate, which can reduce the speed of vacuum degradation.

[0049] When in use, first place the adsorbent material 4 in the vacuum container 5, and seal the container with the cover 7 and the sealing ring 6. Then evacuate the container through the vacuum port 1. Since the adsorbent material 4 is relatively light, the cover 7 can fit tightly to the vacuum container 5 under the action of atmospheric pressure when the interior is in a vacuum environment. After the vacuum treatment is completed, the vacuum container 5 is hoisted in the vacuum cavity 2 using the cantilever 3. The vacuum cavity 2 is then evacuated. During the vacuum process, since the pressure difference between the inside and outside of the vacuum container 5 continues to decrease, the cover 7 will fall off naturally under the action of gravity, so that the adsorbent material 4 can be successfully placed without contacting the air.

[0050] In a preferred but non-limiting embodiment of the present invention, when the mass of the adsorbent material required exceeds the limit that the cover can bear, the cantilever can be replaced by Figure 2 The rotating shaft 9 structure shown in the figure is provided with an electromagnet 10 on the vacuum chamber 2, and a magnetic attraction structure 8 corresponding to the electromagnet 10 is provided outside the vacuum container 5. In the rotating shaft 9 structure, since the cover is facing upward when the adsorbent is provided, more adsorbent can be placed.

[0051] When in use, the adsorbent material 4 is placed in the vacuum container 5 and connected to the vacuum chamber 2 through the rotating shaft 9. When using the delivery device to evacuate, it should be noted that due to the heavy weight of the adsorbent, the release port must be kept upward throughout the process; after the cover 7 is closed, the vacuum container 5 is heated and evacuated, and after the vacuum is extracted, the vacuum container 5 is placed in the vacuum chamber 2 and connected to it through the rotating shaft 9. During the adsorbent material release link, equipment installation or operation, the vacuum chamber 2 is evacuated. When the vacuum degree of the vacuum chamber 2 reaches the ideal state, the electromagnet 10 is energized. After the electromagnet 10 generates a repulsive force, the vacuum container 5 is pushed away from its original position through the magnetic attraction structure 8. Due to the setting of the rotating shaft 9, the vacuum container 5 will rotate downward, and under the action of the gravity of the adsorbent, the cover will fall off by itself, thereby achieving the purpose of releasing the adsorbent.

[0052] In embodiment 2 of the present invention, a method for delivering a vacuum adsorption material delivery device is provided, which specifically comprises the following steps:

[0053] Step S1, preparing the delivery device;

[0054] Step S1 specifically includes:

[0055] Step S1.1, selecting the shape, size, hardness and material of the vacuum container 5 according to different usage scenarios. If there is no special provision, the vacuum container 5 should be cylindrical, which has a strong pressure-bearing capacity;

[0056] In a preferred but non-limiting embodiment of the present invention, if the installation conditions are complex, the shape of the vacuum container 5 can be adjusted according to the actual installation conditions. The adjusted shape should meet the pressure vessel design standards, so Formula 1 is as follows:

[0057] ,

[0058] S is the wall thickness of the container (mm), P is the design pressure (MPa), D is the diameter (mm), is the allowable stress at the design temperature, φ is the welding coefficient (taken as 1.0), and C is the corrosion allowance.

[0059] Step S1.2, quantitatively calculating the usage of the adsorption material 4 according to the vacuum container;

[0060] Since the present invention relies on the pressure difference between the inside and outside of the vacuum container 5 to achieve the purpose of automatic release of the adsorbent, it is necessary to calculate the pressure difference between the inner and outer containers and the mass of the adsorbent. The mass of the adsorbent is mainly determined by the mass of the cover 7 and the pressure difference between the inside and outside. Therefore, Formula 2 is as follows:

[0061] ,

[0062] in, is the mass of the adsorbent (kg), is the mass of the cover 7 (kg), is the friction coefficient, is the cross-sectional area of ​​the cover 7 (mm 2 ), p is the pressure difference between inside and outside (kg / cm 2 ), g is the gravitational constant;

[0063] It can be seen that the lighter the cover 7 is, the more adsorbent it can carry.

[0064] Step S1.3, placing the adsorption material 4 in the vacuum container 5 and connecting it to the vacuum chamber 2 via the cantilever 3.

[0065] Step S2, using a delivery device to evacuate;

[0066] Step S2 specifically includes, after closing the cover 7, heating and evacuating the vacuum container 5, heating can activate the adsorbent and improve the performance of the adsorbent; after vacuuming, placing the vacuum container 5 in the vacuum chamber 2, and connecting it with the cantilever 3. It is worth mentioning that heating and evacuating is not a necessary means, heating can speed up the vacuum extraction speed and achieve a lower vacuum degree.

[0067] Step S3, adsorption material release stage;

[0068] Step S3 specifically includes, during the installation or operation of the equipment, evacuating the vacuum chamber 2. The release vacuum degree of the adsorbent material can be calculated by formula 2, that is, "the internal and external pressure difference p (kg / cm 2 ), when the vacuum degree of the vacuum chamber 2 reaches the release point, the stability of the internal and external pressure difference is destroyed, the cover 7 falls off under the action of gravity, and the adsorbent inside is naturally released.

[0069] The beneficial effect of the present invention is that, compared with the prior art,

[0070] (1) The delivery device of the present invention does not require any heating device, special interface, or new interface. The adsorbent can be released only by relying on the characteristics of the vacuum itself, which effectively reduces the risk of vacuum degradation. In addition, the adsorbent can be released naturally during the vacuum extraction process, which reduces the number of operation steps and improves efficiency.

[0071] (2) The delivery device of the present invention can be adapted to any existing container that is difficult to modify, and the adsorbent release effect can be improved without modifying the container or adding other interfaces;

[0072] (3) The delivery device of the present invention is easy to operate and can effectively prevent the adsorption material from coming into contact with air during delivery, thereby achieving a reliable adsorption effect.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for placing a vacuum adsorption material placing device, characterized in that: The delivery device comprises a vacuum cavity (2), a vacuum container (5) is arranged in the vacuum cavity (2), and a rotating shaft (9) connects the vacuum container (5) and the vacuum cavity (2); an electromagnet (10) is arranged on the vacuum cavity (2), and a magnetic attraction structure (8) corresponding to the electromagnet (10) is arranged outside the vacuum container (5), and the adsorption material (4) is stored in the vacuum container (5); the vacuum container (5) is provided with a vacuum extraction port (1), and after vacuuming through the vacuum extraction port (1), the adsorption material (4) maintains a vacuum environment in the vacuum container (5); The vacuum container (5) is provided with a sealing cover (7) and a sealing ring (6) as a release port for the adsorbent material (4); the vacuum container (5) is adjusted according to the shape of the container into which the adsorbent material is to be placed, so as to be adapted to the shape of the container into which the adsorbent needs to be released; The method for placing the adsorbent material is as follows: first, the opening of the vacuum container (5) is facing upward, the adsorbent material (4) is placed in the vacuum container (5), the cover (7) and the sealing ring (6) seal the vacuum container (5), and the vacuum cavity (2) is evacuated to change the internal and external pressure difference. When the vacuum degree of the vacuum cavity (2) reaches an ideal state, the electromagnet (10) is energized, and after the electromagnet (10) generates a repulsive force, the vacuum container (5) is pushed away from its original position through the magnetic attraction structure (8). The vacuum container (5) is rotated downward by the setting of the rotating shaft (9). As the internal and external pressure difference of the vacuum container (5) is continuously reduced, and under the action of the gravity of the adsorbent material (4), the cover (7) falls off automatically, so that the adsorbent material (4) is placed without contacting the air.

2. The method for placing a vacuum adsorption material according to claim 1, characterized in that: The connection position between the rotating shaft (9), the vacuum container (5) and the vacuum chamber (2) is moved according to different shapes of the vacuum container (5) to support the vacuum container (5).

3. The method for placing a vacuum adsorption material according to claim 2, characterized in that: The connection between the rotating shaft (9) and the vacuum container (5) and the vacuum chamber (2) is either fixed or detachable.

4. The method for placing a vacuum adsorption material according to claim 1, characterized in that: The following steps are involved: Step S1, preparing the delivery device; Step S2, using a delivery device to evacuate; Step S3, adsorption material release stage.

5. The method for placing a vacuum adsorption material according to claim 4, characterized in that: The step S1 specifically includes: Step S1.1, selecting the shape, size, hardness and material of the vacuum container (5) according to different usage scenarios. The shape of the vacuum container (5) should comply with the standard formula for pressure vessel design; Step S1.2, calculating the usage amount of the adsorption material (4) according to the quantitative formula of the vacuum container (5); Step S1.3, placing the adsorption material (4) in a vacuum container (5).

6. A method for placing a vacuum adsorption material according to claim 5, characterized in that: In step S1.1, the standard formula for pressure vessel design is: Where S is the vessel wall thickness, P is the design pressure, D is the diameter, and δ t is the allowable stress at the design temperature, φ is the welding coefficient, and C is the corrosion allowance.

7. The method for placing a vacuum adsorption material according to claim 5, characterized in that: In step S1.2, the quantitative formula of the vacuum container is: in, is the mass of the adsorbent, is the mass of the cap (7), is the friction coefficient, is the cross-sectional area of ​​the cover (7), p is the pressure difference between the inside and outside, and g is the gravity constant.

8. The method for placing a vacuum adsorption material according to claim 4, characterized in that: The step S2 specifically comprises: after the cover (7) is closed, the vacuum container (5) is evacuated, and then the vacuum container (5) is placed in the vacuum cavity (2), and connected to the vacuum cavity (2) via a rotating shaft (9).

9. The method for placing a vacuum adsorption material according to claim 4, characterized in that: The step S3 specifically includes: when the vacuum degree of the vacuum chamber (2) reaches the release point calculated in step S1.2, the stability of the internal and external pressure difference is destroyed, the cover (7) falls off under the action of gravity, and the adsorbent inside is naturally released.

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