Cavity sealing structure

Abstract

The utility model discloses a cavity sealing structure which comprises a machine frame, a door frame and a door body are arranged on the machine frame, a sealing piece is arranged on the door frame or the side, close to the door frame, of the door body, and a jacking mechanism is further arranged on the side, away from the door frame, of the door body. The jacking mechanism comprises a guide seat, a sliding part, a jacking driving part used for driving the sliding part to slide along the guide seat, and a jacking part sliding along with the sliding part to jack the door body. After the door body is closed, the jacking driving piece drives the sliding piece to slide along the guide seat, and the jacking piece is pushed out to jack the door body when the sliding piece slides, so that the door body compresses the sealing piece, the sealing performance between the door frame and the door body is ensured, the structure is simple, the reliability is good, and the jacking piece compresses the door body, so that relative movement between the jacking piece and the door body is avoided; and the problem of pollution caused by diffusible particulate matters generated by friction is avoided, and the device can be suitable for cleaning machine doors of various models and is good in universality.

Description

Technical Field

[0001] The utility model relates to food and medicine packaging equipment, in particular to a cavity sealing structure. Background Art

[0002] As the main pressure-bearing component, the sealing component holds the door tightly and securely, so that the door and the cavity (such as the cleaning chamber, sterilization chamber, etc.) are sealed. During the repeated opening and closing of the door, the sealing component is subjected to alternating loads, so the structural strength and reliability of the sealing component are very high. The equipment environment also has high requirements for the diffusible particles generated during the mechanical movement. In addition, there are certain requirements for the size of the structure, the difficulty of installation and maintenance, etc.

[0003] Most of the existing sealing components use an inflatable sealing ring arranged in the frame groove. The inflatable sealing ring plays the role of tightening the door body or separating from the door body during repeated inflation and deflation. Inflatable sealing rings can ensure sealing under normal circumstances, but practice shows that they have a short service life and a certain risk of explosion, which may cause the door body to spring open without pressure, resulting in water and air leakage. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cavity sealing structure which has a simple structure, good reliability and no relative motion friction with the door body.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A cavity sealing structure comprises a frame, a door frame and a door body are arranged on the frame, a sealing member is arranged on the door frame or on the side of the door body close to the door frame, and a tightening mechanism is also arranged on the side of the door body away from the door frame. The tightening mechanism comprises a guide seat, a sliding member, a tightening driving member for driving the sliding member to slide along the guide seat, and a tightening member that tightens the door body as the sliding member slides.

[0007] As a further improvement of the above technical solution: the sliding member is provided with a driving groove, the angle between the driving groove and the sliding direction of the sliding member is α, 0°<α<90°, the tightening member is provided with a driving pin that cooperates with the driving groove, and the guide seat is provided with a first limiting groove that cooperates with the driving pin, and the first limiting groove is perpendicular to the sliding direction of the sliding member.

[0008] As a further improvement of the above technical solution: the sliding member is provided with a second limiting groove, the second limiting groove is parallel to the sliding direction of the sliding member, and the guide seat is provided with a limiting pin that cooperates with the second limiting groove.

[0009] As a further improvement of the above technical solution: the tightening member is provided with a third limiting groove cooperating with the limiting pin, and the third limiting groove is parallel to the first limiting groove.

[0010] As a further improvement of the above technical solution: the driving groove and the second limiting groove are provided at both ends of the sliding member.

[0011] As a further improvement of the above technical solution: the guide seat and the tensioning member are both U-shaped structures and the openings are arranged opposite to each other.

[0012] As a further improvement of the above technical solution: the driving pin passes through the driving groove and both ends are connected to the two side walls of the tightening member in a one-to-one manner, the first limiting groove is arranged on the two side walls of the guide seat, the limiting pin passes through the second limiting groove and both ends are connected to the two side walls of the guide seat in a one-to-one manner, and the third limiting groove is arranged on the two side walls of the tightening member.

[0013] As a further improvement of the above technical solution: the guide seat is fixed to the frame by fasteners.

[0014] As a further improvement of the above technical solution: the sealing member is an inflatable sealing ring.

[0015] As a further improvement of the above technical solution: the tightening driving member is a cylinder.

[0016] Compared with the prior art, the advantages of the utility model are: in the cavity sealing structure disclosed by the utility model, after the door body is closed, the tightening driving member drives the sliding member to slide along the guide seat, and the sliding member pushes the tightening member out to tighten the door body when sliding, so that the door body presses the sealing member, ensuring the sealing between the door frame and the door body. The structure is simple and the reliability is good. Since the tightening member presses the door body, there is no relative movement between the tightening member and the door body, which avoids the problem of diffusible particulate pollution caused by friction, and the utility model can be applied to various models of cleaning machine doors, with good versatility.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the top view of the cavity sealing structure of the utility model.

[0019] Figure 2 It is an enlarged perspective view of the tightening mechanism in the utility model.

[0020] Figure 3 It is a side structural schematic diagram of the guide seat and the tensioning member in the utility model.

[0021] The symbols in the figure represent:

[0022] 1. Frame; 2. Door frame; 3. Door body; 4. Sealing member; 5. Clamping mechanism; 51. Guide seat; 511. First limiting groove; 512. Limiting pin; 52. Sliding member; 521. Driving groove; 522. Second limiting groove; 53. Clamping driving member; 54. Clamping member; 541. Driving pin; 542. Third limiting groove; 55. Fastener. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Figures 1 to 3An embodiment of the utility model is shown. The cavity sealing structure of this embodiment includes a frame 1. A door frame 2 and a door body 3 are provided on the frame 1. A sealing member 4 is provided on the door frame 2. Of course, in other embodiments, the sealing member 4 can also be provided on the side of the door body 3 close to the door frame 2, or the sealing member 4 can be provided on the inner side of the door body 3. A tightening mechanism 5 is also provided on the side of the door body 3 away from the door frame 2 (i.e., the outer side of the door body 3). The tightening mechanism 5 includes a guide seat 51, a sliding member 52, a tightening driving member 53 for driving the sliding member 52 to slide along the guide seat 51, and a tightening member 54 for tightening the door body 3 as the sliding member 52 slides.

[0028] In the cavity sealing structure of this embodiment, after the door body 3 is closed, the pressing driving member 53 drives the sliding member 52 to slide along the guide seat 51, and the sliding member 52 pushes the pressing member 54 to press the door body 3, so that the door body 3 presses the sealing member 4, ensuring the sealing between the door frame 2 and the door body 3, with a simple structure and good reliability. Since the pressing member 54 presses the door body 3, there is no relative movement between the door body 3, avoiding the problem of diffusible particle pollution caused by friction, and it can be applied to various models of cleaning machine doors, with good versatility.

[0029] Further, in this embodiment, a driving groove 521 is provided on the sliding member 52, and the angle between the driving groove 521 and the sliding direction of the sliding member 52 is α, 0°<α<90° (see Figure 2 , the sliding member 52 slides left and right, the driving groove 521 is arranged obliquely upward, and the angle α between the two is an acute angle), the top member 54 is provided with a driving pin 541 that cooperates with the driving groove 521, and the guide seat 51 is provided with a first limiting groove 511 that cooperates with the driving pin 541, and the first limiting groove 511 is perpendicular to the sliding direction of the sliding member 52 (the first limiting groove 511 is arranged along the front-to-back direction). When the sliding member 52 slides along the guide seat 51, the driving groove 521 can drive the driving pin 541 and the top member 54 to move, and the first limiting groove 511 has a limiting effect on the driving pin 541, so that the driving pin 541 can only drive the top member 54 to move forward and backward but not left and right. When the top member 54 moves forward and backward, it can press the door body 3 or separate from the door body 3. The structure is reasonable and reliable. Of course, in other embodiments, a wedge surface fit may be adopted between the sliding member 52 and the pressing member 54 , and the pressing member 54 may be pushed out when the sliding member 52 slides, and then the pressing member 54 may be reset with the help of elastic members such as springs.

[0030] Furthermore, in this embodiment, the sliding member 52 is provided with a second limiting groove 522, the second limiting groove 522 is parallel to the sliding direction of the sliding member 52 (the second limiting groove 522 is arranged in the left-right direction), and the guide seat 51 is provided with a limiting pin 512 that cooperates with the second limiting groove 522. The limiting pin 512 cooperates with the second limiting groove 522 to provide a limiting effect for the sliding member 52, so that the sliding member 52 can only slide left and right, but not forward and backward, further improving the reliability of the cavity sealing structure.

[0031] Furthermore, in this embodiment, the top member 54 is provided with a third limiting groove 542 that cooperates with the limiting pin 512, and the third limiting groove 542 is parallel to the first limiting groove 511 (the third limiting groove 542 is arranged along the front-to-back direction). The limiting pin 512 limits the third limiting groove 542, so that the top member 54 can only move forward and backward but not left and right, further improving the reliability of the cavity sealing structure.

[0032] As a preferred embodiment, a driving groove 521 and a second limiting groove 522 are provided at both ends of the sliding member 52, so that the left and right ends of the sliding member 52, the tightening member 54 and the guide seat 51 have good symmetry and force balance, which is beneficial to maintaining stable operation of the cavity sealing structure.

[0033] Furthermore, in this embodiment, the guide seat 51 and the pressing member 54 are both U-shaped structures and the openings are arranged opposite to each other. Figure 3 The guide seat 51 and the top member 54 can be combined to form a relatively sealed space to surround the sliding member 52, thereby preventing the particles generated during the sliding of the sliding member 52 from spreading and causing pollution. At the same time, the sliding member 52 does not occupy extra space, which is convenient for use in a small space. The structure is reasonable and effective. Preferably, the guide seat 51 and the top member 54 can be made of sheet metal, which is easy to machine, and the sliding member 52 can be made of plastic, which reduces friction and noise during the sliding process, is easy to process, and has low cost.

[0034] Furthermore, in the present embodiment, the driving pin 541 passes through the driving groove 521 and its two ends are connected one-to-one with the two side walls of the clamping member 54, the first limiting groove 511 is arranged on the two side walls of the guide seat 51, the limiting pin 512 passes through the second limiting groove 522 and its two ends are connected one-to-one with the two side walls of the guide seat 51, and the third limiting groove 542 is arranged on the two side walls of the clamping member 54, so that the symmetry and force balance of the front and rear sides of the sliding member 52, the clamping member 54 and the guide seat 51 are good, which is conducive to maintaining stable operation of the cavity sealing structure.

[0035] As a preferred embodiment, the guide seat 51 is fixed to the frame 1 by fasteners 55 (such as bolts, screws, etc.), see Figure 3After the cavity sealing structure is assembled, it is only necessary to tighten the two fasteners 55 at both ends. The installation requires less materials, is convenient to install and has good reliability.

[0036] As a preferred embodiment, the sealing member 4 is an inflatable sealing ring. Since the door body 3 will be tightened by the tightening member 54, even if an inflatable sealing ring is used as the sealing member 4, the inflation pressure of the inflatable sealing ring can be reduced to a certain extent, thereby extending the service life and reliability of the inflatable sealing ring. Of course, in other embodiments, the sealing member 4 can also be a conventional sealing ring, sealing strip, etc.

[0037] As a preferred embodiment, the jacking drive member 53 is a cylinder, and the cylinder technology is mature and reliable. Of course, in other embodiments, the jacking drive member 53 can also be a screw nut pair, a gear rack pair, etc., which can drive the sliding member 52 to move back and forth.

[0038] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A cavity sealing structure, comprising a frame (1), a door frame (2) and a door body (3) being arranged on the frame (1), a sealing member (4) being arranged on the door frame (2) or on a side of the door body (3) close to the door frame (2), characterized in that: A tightening mechanism (5) is also provided on the side of the door body (3) away from the door frame (2), and the tightening mechanism (5) comprises a guide seat (51), a sliding member (52), a tightening driving member (53) for driving the sliding member (52) to slide along the guide seat (51), and a tightening member (54) for tightening the door body (3) as the sliding member (52) slides.

2. The cavity sealing structure according to claim 1, characterized in that: The sliding member (52) is provided with a driving groove (521), and the angle between the driving groove (521) and the sliding direction of the sliding member (52) is α, 0°<α<90°; the pressing member (54) is provided with a driving pin (541) matched with the driving groove (521); the guide seat (51) is provided with a first limiting groove (511) matched with the driving pin (541), and the first limiting groove (511) is perpendicular to the sliding direction of the sliding member (52).

3. The cavity sealing structure according to claim 2, characterized in that: The sliding member (52) is provided with a second limiting groove (522), the second limiting groove (522) is parallel to the sliding direction of the sliding member (52), and the guide seat (51) is provided with a limiting pin (512) that cooperates with the second limiting groove (522).

4. The cavity sealing structure according to claim 3, characterized in that: The pressing member (54) is provided with a third limiting groove (542) matched with the limiting pin (512), and the third limiting groove (542) is parallel to the first limiting groove (511).

5. The cavity sealing structure according to claim 4, characterized in that: The driving groove (521) and the second limiting groove (522) are provided at both ends of the sliding member (52).

6. The cavity sealing structure according to claim 4, characterized in that: The guide seat (51) and the pressing member (54) are both U-shaped structures, and their openings are arranged opposite to each other.

7. The cavity sealing structure according to claim 6, characterized in that: The driving pin (541) passes through the driving groove (521) and its two ends are connected to the two side walls of the pressing member (54) in a one-to-one correspondence; the first limiting groove (511) is arranged on the two side walls of the guide seat (51); the limiting pin (512) passes through the second limiting groove (522) and its two ends are connected to the two side walls of the guide seat (51) in a one-to-one correspondence; and the third limiting groove (542) is arranged on the two side walls of the pressing member (54).

8. The cavity sealing structure according to any one of claims 1 to 7, characterized in that: The guide seat (51) is fixed to the frame (1) via a fastener (55).

9. The cavity sealing structure according to any one of claims 1 to 7, characterized in that: The sealing element (4) is an inflatable sealing ring.

10. The cavity sealing structure according to any one of claims 1 to 7, characterized in that: The tightening driving member (53) is a cylinder.

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