Sealing structure of vacuum drying oven

Abstract

The sealing structure is applied to a box body and a box door and comprises an installation groove, an air bag, an extrusion part and a sealing groove, the box door is arranged on the box body, the installation groove is formed in the outer edge of the front end of the box body, the installation groove is of an overall square structure, arc grooves are formed in the four corners of the installation groove respectively, and the air bag is arranged in the arc grooves. The mounting groove is formed in the box body, the arc groove is communicated with the mounting groove, the air bag is arranged in the mounting groove, the extrusion part is arranged on the air bag and used for extruding the air bag, the sealing groove is formed in the box door, and the sealing groove is matched with the air bag and used for sealing the box body and the box door. Through mutual cooperation of the air bag, the extrusion piece and the sealing groove, double-layer sealing of the vacuum drying box is achieved, and therefore the sealing performance of the vacuum drying box is improved.

Description

Technical Field

[0001] This utility model relates to a sealing structure for a vacuum drying oven. Background Technology

[0002] Currently, most existing vacuum drying ovens use sealing strips to seal the doors. For example, a vacuum drying oven with announcement number CN207778954U includes a support base and a box body mounted on the support base. A door is rotatably mounted on one side of the box body. A square sealing groove is opened on the front surface of the box body, and a square sealing strip matching the sealing groove is fixed to the door. The interior of the box body is divided into a drying chamber and two heating chambers on both sides of the drying chamber by two partitions. Six layers of support plates are spaced apart in the drying chamber, and a drying tray slides on the support plates. A heater is installed in the heating chamber, and several heat conduction holes are opened on the partitions. A vacuum generator is installed on the support base, and an air pipe connected to the heating chamber is installed on the vacuum generator. An electromagnetic air valve is installed on the air pipe. A locking plate is installed on the side of the door, and a locking rod is movable in the middle of the locking plate. A fixing plate for locking the locking rod is installed on the side of the box body. This vacuum drying oven effectively solves the problems of poor sealing performance and the need to rotate the heated surface during the drying process of biological products inside the oven. However, the sealing strip is exposed when the oven door is open, which may damage the sealing strip when handling materials and affect its sealing effect. In addition, there is often only one sealing strip, which cannot guarantee the airtightness of the vacuum drying oven. Utility Model Content

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0004] The technical problem this invention aims to solve is how to improve the sealing performance of a vacuum drying oven.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sealing structure for a vacuum drying oven, applied to the oven body and door, including a mounting groove, an air bladder, a compression member, and a sealing groove. The door is disposed on the oven body. The mounting groove is located at the outer edge of the front end of the oven body. The mounting groove has an overall square structure, and each of the four corners of the mounting groove has a rounded groove that communicates with the mounting groove. The air bladder is disposed in the mounting groove. The compression member is disposed on the air bladder and is used to compress the air bladder. The sealing groove is located on the door and cooperates with the air bladder to seal the oven body and the door.

[0006] As a preferred embodiment of the sealing structure of the vacuum drying oven of this utility model, the extrusion component includes four pressure caps and four pressure nut. The four pressure caps are respectively disposed at the four corners of the air bladder, and the four pressure nut are respectively disposed on the four pressure caps. The pressure caps can compress the air bladder, causing it to deform to overflow from the mounting groove and enter the sealing groove, so as to achieve a seal between the box body and the box cover.

[0007] As a preferred embodiment of the sealing structure of the vacuum drying oven of this utility model, the extrusion component further includes four springs and four base plates. The four springs are respectively disposed at the bottom of the four pressure caps to facilitate the pressure caps to reset, so that the airbag retracts into the mounting groove and avoids damage to the airbag. The four base plates are respectively disposed on the four springs, and the bottom surface of the base plates is connected to the airbag.

[0008] As a preferred embodiment of the sealing structure of the vacuum drying oven of this utility model, the bottom surface of the pressure cover is provided with an annular surrounding plate that cooperates with the spring to limit the spring and prevent the spring from shifting during compression.

[0009] In a preferred embodiment of the sealing structure of the vacuum drying oven of this utility model, the pressure cap is connected to the pressure cover by a thread to facilitate adjustment of the gap between the pressure cover and the pressure cap.

[0010] As a preferred embodiment of the sealing structure of the vacuum drying oven of this utility model, four pressure blocks are connected to the four corners of the sealing groove by threads. The pressure blocks cooperate with the pressure caps. During the closing of the oven door, the pressure blocks contact the pressure caps and squeeze the pressure caps so as to squeeze the airbag out of the mounting groove.

[0011] As a preferred embodiment of the sealing structure of the vacuum drying oven of this utility model, the extrusion member further includes four pressure plates, which are respectively disposed between two adjacent pressure caps to facilitate the extrusion of the air bladder and achieve a double-layer sealing effect, thereby improving the sealing performance of the vacuum drying oven.

[0012] Beneficial effects: The airbag, extrusion component and sealing groove work together to achieve a double seal for the vacuum drying oven, thereby improving the airtightness of the vacuum drying oven. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0014] Figure 1 This is a schematic diagram of the overall structure of the sealing structure of a vacuum drying oven.

[0015] Figure 2 This is a schematic diagram showing the location of the mounting groove and the arc groove in the sealing structure of a vacuum drying oven.

[0016] Figure 3 This is a schematic diagram showing the location of the sealing groove and pressure block in the sealing structure of a vacuum drying oven.

[0017] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 5 This is a schematic diagram showing the location of the extrusion component in the sealing structure of a vacuum drying oven.

[0019] In the diagram: 1. Box body; 2. Box door; 3. Mounting groove; 4. Airbag; 5. Sealing groove; 6. Arc groove; 7. Pressure cover; 8. Pressure cap; 9. Spring; 10. Base plate; 11. Circular surrounding plate; 12. Pressure block; 13. Pressure plate. Detailed Implementation

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Example

[0023] Reference Figures 1-5This embodiment provides a sealing structure for a vacuum drying oven, applied to the oven body 1 and the oven door 2, including a mounting groove 3, an air bladder 4, a compression member, and a sealing groove 5. The oven door 2 is disposed on the oven body 1. The mounting groove 3 is located at the outer edge of the front end of the oven body 1. The mounting groove 3 has an overall square structure, and each of the four corners of the mounting groove 3 has a circular arc groove 6, which is connected to the mounting groove 3. The air bladder 4 is disposed in the mounting groove 3, and the compression member is disposed on the air bladder 4 for compressing the air bladder 4. The sealing groove 5 is located on the oven door 2 and cooperates with the air bladder 4 to seal the oven body 1 and the oven door 2.

[0024] The box body 1 has a rectangular structure. A door 2 is rotatably mounted on the box body 1. A mounting groove 3 is formed on the outer edge of the front surface of the box body 1. The mounting groove 3 has a square structure. Arc grooves 6 are formed at the four corners of the mounting groove 3, and the arc grooves 6 are interconnected with the mounting groove 3 to form a whole. An airbag 4 is installed in the mounting groove 3. An extrusion member is installed on the upper surface of the airbag 4. A sealing groove 5 is formed on the door 2 to cooperate with the airbag 4. It should be noted that the airbag 4 in this embodiment is made of high-temperature resistant rubber. The airbag is manufactured and only partially filled with gas, with the specific amount determined to meet actual usage requirements. Therefore, the airbag 4 is initially in a contracted state, meaning that when the door 2 is opened, the airbag 4 is contracted within the mounting groove 3 to prevent it from being exposed and damaged, thus affecting the sealing effect. When the door 2 is closed, the airbag 4 is squeezed by the extrusion component to force it from the mounting groove 3 into the sealing groove 5 on the door 2. The airbag 4 and the sealing groove 5 cooperate to achieve a double seal for the vacuum drying oven, thereby improving the sealing performance of the vacuum drying oven.

[0025] Specifically, the extrusion component includes four pressure caps 7 and four pressure caps 8. The four pressure caps 7 are respectively located at the four corners of the airbag 4, and the four pressure caps 8 are respectively located on the four pressure caps 7. Furthermore, the pressure caps 8 are connected to the pressure caps 7 by threads.

[0026] The extrusion component mainly consists of four pressure caps 7 and four pressure nut 8. Four pressure caps 7 are installed at the four corners of the airbag 4, i.e., on the airbag 4 within the arc groove 6. Pressure nut 8 is installed at the center of the upper surface of each of the four pressure caps 7. When the door 2 is closed, the door 2 compresses the pressure nut 8, which in turn compresses the pressure cap 7. The pressure cap 7 then compresses the airbag 4, causing it to deform and overflow from the mounting groove 3, entering the sealing groove 5, thus achieving a seal between the box body 1 and the box cover. Furthermore, in this embodiment, the pressure nut 8 and pressure cap 7 are fixedly connected by threads. During use, the distance between the pressure cap 7 and pressure nut 8 can be adjusted by rotating the pressure nut 8 according to actual usage requirements, so as to better extrude the airbag 4.

[0027] Furthermore, the extrusion component also includes four springs 9 and four base plates 10. The four springs 9 are respectively disposed at the bottom of the four pressure caps 7, and the four base plates 10 are respectively disposed on the four springs 9. The bottom surface of the base plate 10 is connected to the airbag 4.

[0028] In this embodiment, springs 9 are fixedly installed at the bottom of each of the four pressure caps 7 so that the pressure caps 7 can be reset when the door 2 is opened, so that the airbag 4 can retract into the mounting groove 3 and avoid damage to the airbag 4. A base plate 10 is fixedly installed at one end of each of the four springs 9 near the airbag 4. The base plate 10 is adhered to the airbag 4, and the springs 9 are connected to the airbag 4 through the base plate 10 to avoid direct contact between the springs 9 and the airbag 4 and damage to the airbag 4.

[0029] Furthermore, the bottom surface of the pressure cap 7 is provided with an annular surrounding plate 11 that cooperates with the spring 9.

[0030] In this embodiment, an annular surrounding plate 11 is provided on the bottom surface of the pressure cover 7. The annular surrounding plate 11 is used to limit the spring 9 installed on the bottom surface of the pressure cover 7 to prevent the spring 9 from shifting during compression, thereby ensuring that the pressure cover 7 can be reset normally.

[0031] Furthermore, four pressure blocks 12 are threadedly connected to the four corners of the sealing groove 5, and the pressure blocks 12 cooperate with the pressure caps 8.

[0032] In this embodiment, four pressure blocks 12 are fixedly installed at the four corners of the sealing groove 5 by threads. The positions of the four pressure blocks 12 correspond to the pressure caps 8. During the closing process of the box door 2, the pressure blocks 12 can contact the pressure caps 8 and squeeze the pressure caps 8 to squeeze the airbag 4 out of the mounting groove 3. The pressure blocks 12 are connected to the box door 2 by threads. During use, the pressure blocks 12 can also be rotated according to specific usage requirements to adjust the distance between the pressure blocks 12 and the bottom of the sealing groove 5, so that the pressure blocks 12 can better cooperate with the pressure caps 8 to squeeze the airbag 4.

[0033] Furthermore, the extrusion component also includes four pressure plates 13, which are respectively disposed between two adjacent pressure caps 7.

[0034] In this embodiment, pressure plates 13 are installed between each pair of adjacent pressure caps 7, meaning that the four pressure caps 7 are connected laterally and longitudinally through four pressure plates 13. The pressure plates 13 are located in the middle of the mounting groove 3. The pressure plates 13 compress the gas in the middle of the airbag 4 and move it to the upper, lower, left, or right sides of the mounting groove 3. This allows the airbags 4 located on the upper, lower, left, or right sides of the mounting groove 3 to be squeezed out through the gap between the pressure plates 13 and the mounting groove 3. During this process, the gas in the airbags 4 in the arc grooves 6 at the four corners of the mounting groove 3 is also compressed. The pressure of the cover 7 moves towards the outer edge of the arc groove 6, so that the airbag 4 can be squeezed out from the gap between the cover 7 and the arc groove 6 and between the cover 7 and the mounting groove 3. The airbags 4 squeezed out from the four corners of the mounting groove 3 are connected to the airbags 4 squeezed out laterally and longitudinally to form a whole. The airbags 4 squeezed out from the inner side of the mounting groove 3 are in contact with the inner side of the sealing groove 5, and the airbags 4 squeezed out from the outer side of the mounting groove 3 are in contact with the outer side of the sealing groove 5, so as to form two seals on the inner and outer sides of the mounting groove 3, that is, to achieve the effect of double sealing, thereby improving the sealing performance of the vacuum drying oven.

[0035] In use, the airbag 4 is initially in a contracted state, i.e., it is located within the mounting groove 3. When the door 2 is closed, the pressure blocks 12 at the four corners of the sealing groove 5 contact and press against the pressure cap 8. The pressure cap 8 presses against the pressure cover 7, which in turn presses against the spring 9. This causes the pressure cover 7 and the pressure plate 13 to continuously compress the airbag 4, forcing the airbag 4, located on the upper / lower or left / right sides of the mounting groove 3, out through the gap between the pressure cover 7 and the arc groove 6, and the gap between the pressure plate 13 and the mounting groove 3. When the airbag 4 is inserted into the sealing groove 5, it contacts the inner and outer surfaces of the sealing groove 5 respectively, so as to achieve a double seal on the door 2 and the body 1, thereby improving the sealing effect of the vacuum drying oven. After the vacuum drying oven finishes working, when the door 2 is opened, the pressure block 12 separates from the pressure cap 8, and the pressure cover 7 is driven by the elastic force of the spring 9 to move the pressure plate 13 out of the mounting groove 3 until it is reset. The airbag 4 retracts into the mounting groove 3 to avoid damage to the airbag 4 during the handling of goods.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sealing structure for a vacuum drying oven, characterized in that: It is applied to the box body (1) and the box door (2), including the mounting groove (3), the airbag (4), the extrusion piece and the sealing groove (5). The box door (2) is set on the box body (1). The mounting groove (3) is opened at the outer edge of the front end of the box body (1). The mounting groove (3) has an overall square structure. The four corners of the mounting groove (3) are respectively provided with arc grooves (6). The arc grooves (6) are connected to the mounting groove (3). The airbag (4) is set in the mounting groove (3). The extrusion piece is set on the airbag (4) for extruding the airbag (4). The sealing groove (5) is opened on the box door (2). The sealing groove (5) cooperates with the airbag (4) for sealing the box body (1) and the box door (2).

2. The sealing structure of the vacuum drying oven as described in claim 1, characterized in that: The extrusion component includes four pressure caps (7) and four pressure caps (8). The four pressure caps (7) are respectively disposed at the four corners of the airbag (4), and the four pressure caps (8) are respectively disposed on the four pressure caps (7).

3. The sealing structure of the vacuum drying oven as described in claim 2, characterized in that: The extrusion component also includes four springs (9) and four base plates (10). The four springs (9) are respectively disposed at the bottom of the four pressure caps (7), and the four base plates (10) are respectively disposed on the four springs (9). The bottom surface of the base plate (10) is connected to the airbag (4).

4. The sealing structure of the vacuum drying oven as described in claim 3, characterized in that: The bottom surface of the pressure cap (7) is provided with an annular surrounding plate (11) that cooperates with the spring (9).

5. The sealing structure of the vacuum drying oven as described in claim 2, characterized in that: The pressure cap (8) is connected to the pressure cover (7) by threads.

6. The sealing structure of the vacuum drying oven as described in claim 5, characterized in that: The four corners of the sealing groove (5) are connected by threads to four pressure blocks (12), which cooperate with the pressure cap (8).

7. The sealing structure of the vacuum drying oven as described in claim 3, characterized in that: The extrusion component also includes four pressure plates (13), which are respectively disposed between two adjacent pressure caps (7).

Images