Vacuum drying device
By using the combination of automatic lifting components and sealing rings in the vacuum drying device, combined with negative pressure and inert gas devices, the problem of poor sealing effect of existing devices is solved, and a more efficient sealing effect is achieved, and the environment of the glass substrate is protected.
Patent Information
- Application Number
- CN202421172037.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The existing vacuum drying device has poor sealing effect on the cover, which can easily lead to environmental pollution and cannot effectively protect the glass substrate coated with the drug liquid.
A vacuum drying device is designed, using automatic lifting assembly and sealing ring combination, and the upper cover is automatically opened and closed and height adjustment through magnetic switches and control modules, and the sealing ring is press-fitted after the cover is closed, combined with negative pressure. The device and the inert gas generator ensure efficient sealing of the seal chamber.
It significantly improves the sealing effect of the sealing chamber, protects the environment inside the sealing chamber, avoids external pollution, and ensures the efficiency and purity of the drying process of the medicine liquid.
Smart Images
Figure CN222298343U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vacuum drying of perovskite batteries, and in particular relates to a vacuum drying device. Background Art
[0002] Perovskite solar cells are solar cells that use perovskite structural materials as light-absorbing materials. The glass substrate coated with liquid medicine needs to be dried in the vacuum drying furnace process. However, the liquid medicine has high requirements for the environment and is easily contaminated by the outside air.
[0003] When used in laboratory scenarios, the lid of the existing vacuum drying device is opened and closed manually, which has poor sealing effect and is easy to pollute the environment inside the sealed cavity. Therefore, there is an urgent need to provide a vacuum drying device. Utility Model Content
[0004] The purpose of the utility model is to provide a vacuum drying device to solve the technical problems mentioned in the background technology.
[0005] In order to solve the above technical problems, the utility model provides a vacuum drying device, comprising: a bracket, on the upper part of which a table is arranged; an upper cover assembly, which includes an upper cover and a lifting assembly for driving the upper cover to open and close; at least one layer of sealing ring is arranged on any covering surface of the table and the edge of the upper cover, so that a sealed cavity is formed when the table and the upper cover are covered.
[0006] Furthermore, the lifting assembly includes: at least one lifting push rod, which is located on the side wall of the bracket; the push rod end of the lifting push rod is connected to the edge of the upper cover to support the opening and closing of the upper cover.
[0007] Furthermore, the lifting assembly also includes a magnetic switch and a control module electrically connected to the magnetic switch; the magnetic switch is arranged on the push rod part to detect the lifting height of the upper cover and send the height data to the control module, and the control module controls the height adjustment of the lifting push rod.
[0008] Further, the sealing ring is located on the table top, and is pressed against the edge of the upper cover to seal after the upper cover is closed; or the sealing ring is located on the edge of the upper cover, and is pressed against the table top to seal after the upper cover is closed; or at least one layer of sealing ring is located on the edge of the upper cover, and at least one layer of sealing ring is located on the table top, and they are staggered and pressed against the table top to seal after the upper cover is closed.
[0009] Furthermore, a viewing window is provided on the top of the upper cover;
[0010] A sealing ring is provided on the contact surface between the lower edge of the viewing window and the upper cover.
[0011] Furthermore, the table top is provided with corresponding air holes, and each air hole is connected to the negative pressure device and the inert gas generating device through a corresponding pipeline.
[0012] Further, the negative pressure device includes: a vacuum pump controlled by a control module;
[0013] The vacuum pump is connected to the first air hole through the butterfly valve and the through valve in sequence; and
[0014] The control module detects the vacuum degree of the sealed chamber through a vacuum gauge, and controls the vacuum pump to shut down when the set vacuum degree is met.
[0015] Further, the inert gas generating device is provided with an inert gas micro-regulating valve, which is connected with the second gas hole through a corresponding pipeline;
[0016] The inert gas generating device is controlled by the control module to release the inert gas into the sealed cavity;
[0017] The control module detects the air pressure in the sealed cavity through a vacuum gauge, and controls the inert gas generating device to be turned off after the set air pressure is met.
[0018] Furthermore, a substrate for fixing the substrate is arranged on the table top.
[0019] The utility model has the following beneficial effects:
[0020] The utility model provides an automatic lifting component, which drives the upper cover to move up and down under the driving action of the lifting push rod. After the upper cover is closed, it cooperates with the sealing ring on the table to form a pressed state, thereby achieving a better sealing effect of the sealing cavity.
[0021] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by implementing the present invention.
[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a structural schematic diagram of the vacuum drying device of the utility model;
[0025] Figure 2 A schematic diagram of the structure of the upper cover lifting assembly;
[0026] FIG3 is a schematic diagram of a sealing ring implementation;
[0027] Figure 4 It is the front view of the vacuum drying device;
[0028] Figure 5 It is the control principle diagram of the vacuum drying device.
[0029] In the figure:
[0030] 100, bracket, 101, table, 102, first sealing ring, 103, substrate, 1031, positioning groove, 104, vacuum gauge, 1051, first air hole, 1052, second air hole;
[0031] 200, upper cover assembly, 201, upper cover, 202, viewing window, 203, second sealing ring;
[0032] 300, lifting assembly, 301, push rod, 302, magnetic switch, 303, screw;
[0033] 400, inert gas generating device, 401, inert gas micro-regulating valve, 402, butterfly valve;
[0034] 500. Negative pressure device; 501. Pipeline; 502. Vacuum pump; 503. Through valve. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.
[0036] like Figure 1 As shown, at least one embodiment provides a vacuum drying device, which includes: a bracket 100, wherein the bracket 100 is provided with a table 101, and the table 101 is arranged above the bracket 100 to form the top of the bracket 100; an upper cover assembly 200, which includes an upper cover 201, wherein the upper cover 201 opens and closes with the top of the bracket 100, and the opening and closing of the upper cover 201 is driven by a lifting assembly 300; at least one layer of a first sealing ring 102 is provided on any covering surface of the edge of the table 101 and the upper cover 201, and when the lifting assembly 300 slowly falls back and resets, the table 101 and the upper cover 201 cover each other to form a sealed cavity.
[0037] In some embodiments, by setting up a lifting assembly 300, the upper cover 201 can be driven up and down under the driving action of the lifting push rod 301, so that the upper cover 201 can be pressed against the first sealing ring 102 on the table 101 after closing, thereby making the sealing cavity more sealed.
[0038] In some embodiments, Figure 2 As shown, the lifting assembly 300 includes: at least one lifting push rod 301, which is located on the side wall of the bracket 100; the push rod end of the lifting push rod 301 is connected to the edge of the upper cover 201 to support the opening and closing of the upper cover 201. Specifically, the push rod end of the lifting push rod 301 is fixedly connected to the edge of the upper cover 201 by a screw 303, which is used to support the opening and closing of the upper cover 201 and provide good support force. In other embodiments, two or more lifting push rods 301 can also be used to achieve this.
[0039] In some embodiments, the lifting assembly 300 further includes a magnetic switch 302, which is disposed on the push rod 301 to detect the lifting height of the upper cover 201. The magnetic switch 302 is electrically connected to a control module; the magnetic switch 302 sends height data to the control module, and the control module controls the height adjustment of the lifting push rod 301.
[0040] Specifically, when the lifting push rod 301 lifts the upper cover 201 to open, the magnetic switch 302 detects that the upper cover 201 reaches the specified position, and the lifting push rod 301 stops moving, which is convenient for manual placement of the substrate in the substrate positioning groove 1031 on the table 101 substrate 103.
[0041] The specific implementation of providing at least one first sealing ring 102 on any of the covering surfaces of the table 101 and the edge of the upper cover 201 includes:
[0042] As shown in FIG3 (a), in some embodiments, at least one first sealing ring 102 is provided on any covering surface of the table top 101 and the edge of the upper cover 201, including: the first sealing ring 102 is located on the table top 101, and is pressed together with the edge of the upper cover 201 to seal after the upper cover 201 is covered.
[0043] As shown in FIG. 3( b ), in some embodiments, the first sealing ring 102 is located at the edge of the upper cover 201 , and is pressed against the table 101 to seal after the upper cover 201 is closed.
[0044] As shown in FIG3 (c), in some embodiments, at least one first sealing ring 102 is located at the edge of the upper cover 201, and at least one first sealing ring 102 is located on the table 101, and they are staggered; after the upper cover 201 is closed, they are pressed together with the table 101 to seal.
[0045] In the above three embodiments, two or more layers of first sealing rings 102 may be used to improve the sealing effect.
[0046] In some embodiments, the upper cover 201 is provided with a viewing window 202, which is located at the top of the upper cover 201, so that the experimenter can observe the changes of the membrane surface during the whole process through the viewing window 202 of the upper cover 201; the contact surface between the lower edge of the viewing window 202 and the upper cover 201 is provided with a second sealing ring 203, which is doubly sealed with the first sealing ring 102 on the table 101, so that the sealing performance of the sealing cavity is better.
[0047] In some embodiments, Figure 1 and Figure 4 As shown, the table 101 is provided with corresponding air holes (the figure shows a first air hole 1051 and a second air hole 1052, and the present embodiment does not limit the number of air holes, and in other embodiments, the number of air holes can be increased or decreased according to actual needs). Each air hole is connected to the negative pressure device 500 and the inert gas generating device 400 through a corresponding pipeline.
[0048] In combination with Figure 4 and attached Figure 5 In some embodiments, the negative pressure device 500 includes: a vacuum pump 502 controlled by a control module; the vacuum pump 502 is connected to the first air hole 1051 through the butterfly valve 402 and the through valve 503 in sequence; and the control module detects the vacuum degree of the sealed cavity through the vacuum gauge 104, and controls the vacuum pump 502 to close after the set vacuum degree is met. When the vacuum pump 502 is in operation, the butterfly valve 402 and the through valve 503 are opened, and the vacuum pump 502 extracts the gas in the sealed cavity through the pipeline 501 to achieve a negative pressure state. The table 101 is also provided with an air hole for vacuum gauge detection (not shown in the figure) to measure the vacuum degree in the sealed cavity. The vacuum degree in the sealed cavity is detected by the vacuum gauge 104. When the set vacuum degree is reached, the vacuum pump 502 stops operating.
[0049] In some embodiments, the inert gas generating device 400 is provided with an inert gas micro-adjusting valve 401, which is connected to the second air hole 1052 through a corresponding pipeline; the inert gas generating device 400 is controlled by a control module to release inert gas into the sealed cavity, and the inert gas is, for example but not limited to, nitrogen. The control module detects the air pressure in the sealed cavity through a vacuum gauge 104, and controls the inert gas generating device 400 to close after the set air pressure is met.
[0050] In some embodiments, the air holes are arranged at different installation positions to facilitate the connection with more pipelines 501 .
[0051] The control module can be implemented by, but not limited to, a PLC, a single-chip microcomputer, or an embedded control module, and can also be implemented in an integrated or discrete manner.
[0052] In this embodiment, the method for collecting the vacuum degree and pressure and the control module generating corresponding control instructions to control the lifting push rod 301, the vacuum pump 502 and the inert gas generating device 400 all belong to the scope of the prior art, and the control method thereof is disclosed in many prior art documents. This embodiment does not make creative improvements to the above control method, and those skilled in the art can repeat the technical solution of this embodiment based on the prior art.
[0053] In summary, by setting up the lifting assembly 300, the upper cover 201 can be driven up and down by the driving action of the lifting push rod 301, so that the upper cover 201 can be pressed against the first sealing ring 102 on the table 101 after being closed, making the sealing cavity more sealed and better protecting the environment inside the sealing cavity.
[0054] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0055] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0056] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A vacuum drying device, characterized in that: include: A support, with a table top disposed on the upper portion thereof; An upper cover assembly, comprising an upper cover and a lifting assembly for driving the upper cover to open and close; At least one layer of sealing ring is provided on any covering surface of the table top and the edge of the upper cover, so that a sealed cavity is formed after the table top and the upper cover are covered.
2. The vacuum drying device according to claim 1, characterized in that: The lifting assembly includes: at least one lifting push rod, which is located on the side wall of the bracket; The push rod end of the lifting push rod is connected to the edge of the upper cover to support the opening and closing of the upper cover.
3. The vacuum drying device according to claim 2, characterized in that: The lifting assembly further includes a magnetic switch and a control module electrically connected to the magnetic switch; The magnetic switch is arranged on the push rod part to detect the lifting height of the upper cover and send the height data to the control module, and the control module controls the height adjustment of the lifting push rod.
4. The vacuum drying device according to claim 1, characterized in that: The sealing ring is located on the table top and is pressed against the edge of the upper cover to seal after the upper cover is closed; or The sealing ring is located at the edge of the upper cover, and is pressed against the table surface to seal after the upper cover is closed; or At least one layer of sealing rings is located at the edge of the upper cover, and at least one layer of sealing rings is located on the table top and arranged alternately. After the upper cover is closed, the sealing rings are pressed against the table top to seal.
5. The vacuum drying device according to claim 1, characterized in that: The top of the upper cover is provided with a viewing window; A sealing ring is provided on the contact surface between the lower edge of the viewing window and the upper cover.
6. The vacuum drying device according to claim 1, characterized in that: The table top is provided with corresponding air holes, and each air hole is connected to the negative pressure device and the inert gas generating device through a corresponding pipeline.
7. The vacuum drying device according to claim 6, characterized in that: The negative pressure device includes: a vacuum pump controlled by a control module; The vacuum pump is connected to the first air hole through a butterfly valve and a through valve in sequence; and The control module detects the vacuum degree of the sealing chamber through a vacuum gauge, and controls the vacuum pump to turn off after the set vacuum degree is met.
8. The vacuum drying device according to claim 6, characterized in that: The inert gas generating device is provided with an inert gas micro-regulating valve, which is connected with the second gas hole through a corresponding pipeline; The inert gas generating device is controlled by the control module to release the inert gas into the sealed cavity; The control module detects the air pressure in the sealed cavity through a vacuum gauge, and controls the inert gas generating device to be turned off after the set air pressure is met.
9. The vacuum drying device according to claim 1, characterized in that: A substrate for fixing a substrate is arranged on the table top.