A new hot air circulating tunnel oven door hinge mechanism

Abstract

The utility model provides a novel hot -blast circulation tunnel oven door hinge mechanism, including box door fixed base, hinge body and hinge mounting seat, wherein: the left end of box door fixed base is connected with the left end of hinge body through first hinged axle downwardly, the right end of hinge body is connected with hinge mounting seat through second hinge axle downwardly. The utility model discloses through double hinge design makes door body to open and lock fast stable, has improved operating efficiency, and reliable sealing, meets the production tempo requirement simultaneously, adopts the high temperature and corrosion of SUS304 material, and the structure is stable, and the gasket and the limiting design reduce the wear and tear and the failure risk, safe and reliable, and each component surface smooth no dead angle, easy to clean and maintain, be applicable to a variety of hot -blast circulation tunnel oven.

Description

Technical Field

[0001] This utility model relates to a hot air circulating tunnel oven, and more particularly to a novel hot air circulating tunnel oven door hinge mechanism. Background Technology

[0002] Hot air circulating tunnel ovens are a type of pharmaceutical equipment system, primarily used in the pharmaceutical industry. They mainly consist of a preheating section, a heating and sterilization section, and a cooling section. Hot air circulating tunnel ovens are common equipment for liquid preparations. They utilize a hot air circulating fan to circulate 100-class purified air within the heating section, transferring heat to the ampoules or vials requiring sterilization while continuously replenishing fresh air and simultaneously removing humid or saturated hot air from the oven, thus achieving the purpose of drying and sterilizing the ampoules or vials.

[0003] In recent years, with the development of the industry and the upgrading of GMP, hot air circulating tunnel ovens have been widely used in industries such as pharmaceuticals, and the demand for hot air circulating tunnel ovens is increasing. Correspondingly, the requirements for each component of the equipment are very high. Therefore, we designed an oven door hinge mechanism. However, the oven doors used in existing hot air circulating tunnel ovens are inconvenient to open, easily affecting the sealing performance and ultimately leading to test failures. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a new type of hot air circulating tunnel oven door hinge mechanism that addresses the above-mentioned defects in the prior art. This mechanism has a simple structure, is easy to process and install, and can lock the oven door assembly better and more effectively.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0006] A novel hot air circulating tunnel oven door hinge mechanism includes a door fixing seat, a hinge body, and a hinge mounting seat, wherein:

[0007] The left end of the door fixing seat is hinged downwards to the left end of the hinge body via a first hinge axis; the right end of the hinge body is hinged downwards to the hinge mounting seat via a second hinge axis.

[0008] Preferably, the left end of the door fixing seat has a first fixing hole, and the middle and right ends have first mounting holes, wherein:

[0009] The top end of the first hinge shaft is fixedly welded into the first fixing hole;

[0010] The first mounting hole is detachably mounted on the top and bottom of the oven door using fasteners.

[0011] Preferably, the hinge body is a square plate structure, with a first hinge hole extending vertically through its left end and a second hinge hole extending vertically through its right end, wherein:

[0012] The lower middle end of the first hinge shaft is hingedly installed in the first hinge hole, and the upper end of the second hinge shaft is hingedly installed in the second hinge hole.

[0013] Preferably, the hinge mounting base is a square plate structure with a second fixing hole running vertically through its center, second mounting holes at both the left and right corners, and a shim at the center of its back.

[0014] The lower end of the second hinge shaft is hinged in the second fixing hole, and each of the second mounting holes is fixed to the oven wall panel with fasteners.

[0015] Preferably, the top end of the first hinge shaft is vertically fixed in the first fixing hole at the left end of the door fixing seat, and the lower end is rotatably installed in the first hinge hole at the left end of the hinge body.

[0016] More preferably, the middle and lower ends of the first hinge shaft are respectively movably fitted with first hinge washers, wherein:

[0017] The two first hinge pads are respectively embedded at the top entrance or bottom entrance of the first hinge hole at the left end of the hinge body, and are arranged symmetrically from top to bottom.

[0018] Preferably, a first washer is fitted on the first hinge shaft between the door fixing seat and the hinge body, and

[0019] The bottom end of the first hinge shaft is fixed to the bottom left end of the hinge body using a first bolt and a second washer.

[0020] Preferably, the upper end and middle end of the second hinge shaft are respectively movably fitted with second hinge washers, wherein:

[0021] The two second hinge pads are respectively embedded at the top entrance or bottom entrance of the second hinge hole at the right end of the hinge body, and are arranged symmetrically from top to bottom.

[0022] Preferably, the top end of the second hinge shaft is fixedly mounted to the top right end of the hinge body by a third washer and a second bolt; and

[0023] The bottom end of the second hinge shaft is fixed to the bottom right end of the hinge mounting base by a fourth washer and a third bolt.

[0024] Preferably, the door fixing seat, hinge body, hinge mounting seat, first hinge shaft and second hinge shaft are all made of stainless steel or aluminum alloy.

[0025] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0026] (1) Convenient and efficient: The double hinge mechanism consisting of a door fixing seat, hinge body and hinge mounting seat and a first hinge shaft and a second hinge shaft can open and lock the oven door faster and more efficiently, which not only ensures the sealing of the door when it is closed, but also indirectly ensures the pass rate of product testing.

[0027] (2) Safe and reliable: There is no such hinge mechanism on the existing hot air circulating tunnel oven. The oven door hinge mechanism fully considers the safety of use. It is made of SUS304 material, with a smooth and beautiful surface, and can complete the maintenance and installation before start-up very well.

[0028] (3) Easy to maintain and wide range of applications: The oven door hinge mechanism is installed by screw connection, which is simple to install. Its smooth outer surface has no dead corners, making it easy to clean and maintain. It can be applied to any hot air circulating tunnel oven, which can lock the oven door faster and more efficiently to improve production efficiency and comply with GMP standards. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the assembly structure of a novel hot air circulating tunnel oven door hinge mechanism on the oven door according to this utility model;

[0030] Figure 2 This is a partially enlarged structural diagram of a novel hot air circulating tunnel oven door hinge mechanism of the present invention on the oven door;

[0031] Figure 3 This is a front view schematic diagram of a novel hot air circulating tunnel oven door hinge mechanism according to this utility model;

[0032] Figure 4 This is a side view of the hinge mechanism for a novel hot air circulating tunnel oven door according to the present invention.

[0033] Figure 5 This is a cross-sectional structural schematic diagram of a novel hot air circulating tunnel oven door hinge mechanism according to this utility model;

[0034] The accompanying figures are labeled as follows:

[0035] 10-Door mounting base, 11-Fixing hole, 12-First mounting hole;

[0036] 20-Hinge body, 21-First hinge hole, 22-Second hinge hole;

[0037] 30-Hinge mounting base, 31-Second fixing hole, 32-Second mounting hole, 33-Push block;

[0038] 40-First hinge shaft, 41-First washer, 42-First hinge washer, 43-First bolt, 44-Second washer;

[0039] 50 - Second hinge pin, 51 - Second hinge washer, 52 - Third washer, 53 - Second bolt, 54 - Fourth washer, 55 - Third bolt. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0041] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In some embodiments, such as Figures 1 to 5 As shown, a novel hinge mechanism for a hot air circulating tunnel oven door is provided. This hinge mechanism, through a double-hinge design, enables the oven door to open and lock quickly and smoothly, effectively ensuring the oven door's sealing performance and thus improving the product test pass rate. The hinge mechanism mainly includes a door fixing seat 10, a hinge body 20, a hinge mounting seat 30, a first hinge shaft 40, and a second hinge shaft 50. These components are connected by hinges to form a double-hinge structure, allowing the oven door to rotate flexibly. The following will elaborate on the components, installation method, and working principle of this mechanism.

[0043] Specifically, the left end of the door fixing seat 10 is fixedly connected to the top end of the first hinge shaft 40, and the lower end of the first hinge shaft 40 is hinged downwards to the hinge body 20, ensuring a tight connection between them. Simultaneously, the right end of the hinge body 20 is hinged to the upper end of the second hinge shaft 50, and the lower end of the second hinge shaft 50 is hinged downwards to the hinge mounting seat 30, ensuring a secure connection between them. This design aims to ensure the door can move flexibly and stably during opening and closing, avoiding inconvenience or safety hazards caused by loose or detached connecting parts.

[0044] Furthermore, regarding material selection, all components of the hinge mechanism, including the door fixing seat 10, hinge body 20, hinge mounting seat 30, first hinge shaft 40, and second hinge shaft 50, are made of SUS304 stainless steel or aluminum alloy. SUS304 stainless steel is preferred, as it possesses excellent high-temperature resistance and corrosion resistance, a surface finish that meets GMP requirements, and is easy to clean and sterilize, making it suitable for the harsh environments of the pharmaceutical industry.

[0045] In some of these embodiments, such as Figure 2 and Figure 5 As shown, the door mounting base 10 is made of SUS304 stainless steel with a polished surface, resulting in a smooth and seamless finish. A first mounting hole 11 is provided at the left end of the door mounting base 10, through which the top end of the first hinge shaft 40 is welded to ensure a secure connection. Multiple sets of first mounting holes 12 are provided at the middle and right ends of the door mounting base 10. These holes allow for detachable installation at the top and bottom of the oven door using stainless steel screws or other fasteners.

[0046] In actual installation, the first mounting holes 12 are arranged at left and right intervals to ensure that the door fixing seat 10 is evenly stressed and to prevent door deformation. Through this design, the door fixing seat 10 can reliably connect the oven door to the hinge mechanism and provide basic support for the rotation of the door.

[0047] In some of these embodiments, such as Figure 3 , Figure 4 and Figure 5 As shown, the hinge body 20 is a square plate structure, also made of SUS304 stainless steel, which has high strength and corrosion resistance. A first hinge hole 21, running vertically through the hinge body 20, is located at the left end, and a second hinge hole 22, running vertically through the hinge body 20, is located at the right end.

[0048] The lower middle end of the first hinge shaft 40 is hinged in the first hinge hole 21, allowing the hinge body 20 to rotate around the first hinge shaft 40. The upper end of the second hinge shaft 50 is hinged in the second hinge hole 22, connecting it to the hinge mounting base 30. The hinge body 20, acting as an intermediate connecting rod, transmits the opening and closing motion of the door. Its plate-like structure design is simple, facilitating processing and installation.

[0049] In some of these embodiments, such as Figure 2 , Figure 3 and Figure 5 As shown, the hinge mounting base 30 is a square plate structure, also made of SUS304 stainless steel, with a smooth surface that is easy to clean. A second fixing hole 31, which runs vertically through the center of the hinge mounting base 30, is provided. The lower end of the second hinge shaft 50 is hinged in this hole, allowing the hinge mounting base 30 to rotate around the second hinge shaft 50.

[0050] Multiple sets of second mounting holes 32 are provided at the left and right corners of the hinge mounting base 30. These holes are fixed to the oven wall panel by fasteners such as stainless steel screws to ensure the stability of the overall mechanism.

[0051] In addition, a shim block 33 is provided at the center of the back of the hinge mounting base 30. This shim block 33 is a plate-shaped structure and is installed on the back of the hinge mounting base 30 with screws. Multiple shims can be set as needed to create different height increases. Depending on actual needs, the shim block 33 can also be embedded in a pre-set groove in the oven wall panel to provide positioning and prevent displacement, thereby improving installation accuracy.

[0052] In some of these embodiments, such as Figure 5 As shown, the first hinge shaft 40 and the second hinge shaft 50 are both stainless steel shafts, responsible for connecting the components and enabling rotation. This dual limit design ensures the stability of the hinge shaft during long-term use.

[0053] Specifically, the top end of the first hinge shaft 40 is vertically fixed in the first fixing hole 11 of the door fixing seat 10, and the lower end is rotatably installed in the first hinge hole 21 of the hinge body 20. In order to reduce friction and wear, two first hinge washers 42 are movably sleeved at the middle and lower ends of the first hinge shaft 40, respectively. These two washers are respectively embedded in the top entrance and bottom entrance of the first hinge hole 21, arranged symmetrically from top to bottom, and play a role in buffering and guiding.

[0054] Meanwhile, a first washer 41 is fitted on the first hinge shaft 40 between the door fixing seat 10 and the hinge body 20 to adjust the gap; the bottom end of the first hinge shaft 40 is limited and fixed by the first bolt 43 and the second washer 44 to prevent the shaft from falling off.

[0055] Similarly, two second hinge washers 51 are movably fitted at the upper and middle ends of the second hinge shaft 50, respectively. These two washers are embedded in the top and bottom entrances of the second hinge hole 22 and are arranged symmetrically to ensure smooth rotation.

[0056] Similarly, the top end of the second hinge shaft 50 is fixed to the top right end of the hinge body 20 by the third washer 52 and the second bolt 53, and the bottom end is fixed to the bottom right end of the hinge mounting base 30 by the fourth washer 54 and the third bolt 55.

[0057] Combination Figures 1 to 5 As shown, the hinge mechanism provided by this utility model achieves the compound movement of the oven door through a double-hinge design, namely through a first hinge axis and a second hinge axis, making the door more stable and efficient during opening and closing. The specific working principle is as follows:

[0058] Door opening process: When the operator pulls the oven door outward, the door body drives the first hinge shaft 40 to rotate via the door fixing seat 10. Since the first hinge shaft 40 is hinged to the left end of the hinge body 20, the hinge body 20 will rotate outward around the first hinge shaft 40. At the same time, the right end of the hinge body 20 is connected to the hinge mounting seat 30 via the second hinge shaft 50, which allows the hinge body 20 to rotate relative to the hinge mounting seat 30. This double-hinge structure makes the door exhibit a "translation-rotation" compound motion when opening. The door body first translates outward a small distance, and then smoothly rotates to open, avoiding direct friction between the door body and the oven wall panel and reducing resistance. During the opening process, the first hinge washer 42 and the second hinge washer 51 play a role in lubrication and friction reduction, ensuring smooth rotation.

[0059] Closing and locking process: When the door is closed, the operator pushes the door inward and locks it at the other end. The hinge body 20 rotates inward around the second hinge axis 50, simultaneously pulling the door back to its original position via the first hinge axis 40. Due to the leverage effect of the double hinge mechanism, the door generates an inward clamping force at the end of the closing process, ensuring a tight seal between the door and the oven sealing ring, thus guaranteeing a tight seal. Throughout the process, the washer and bolt limiting structure ensures that the hinge axis will not loosen, improving reliability.

[0060] Furthermore, regarding sealing, the mechanism utilizes the coordinated movement of two hinges to automatically align and press the sealing ring when the door is closed, avoiding the sealing problems caused by uneven rotation in traditional single-hinge systems. In addition, the precision machining and installation of all components ensure a high degree of fit between the door and the wall panel, reducing the risk of hot air leakage and indirectly improving the product's pass rate.

[0061] In summary, the hinge mechanism of this embodiment has the following practical advantages: Convenience and efficiency: The double-hinge design allows for quick and smooth opening and locking of the door, improving operational efficiency while ensuring reliable sealing, meeting production cycle requirements. Safety and reliability: The SUS304 material is resistant to high temperatures and corrosion, providing a robust structure. Gaskets and limit designs reduce wear and the risk of failure. Easy maintenance: Components are connected by screws, making disassembly simple; the smooth surface without dead corners facilitates cleaning and maintenance, making it suitable for various hot air circulating tunnel ovens.

[0062] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0063] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0064] Finally, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel hot air circulating tunnel oven door hinge mechanism, characterized in that, It includes a door fixing seat (10), a hinge body (20), and a hinge mounting seat (30), wherein: The left end of the door fixing seat (10) is hinged downward to the left end of the hinge body (20) via the first hinge shaft (40); the right end of the hinge body (20) is hinged downward to the hinge mounting seat (30) via the second hinge shaft (50).

2. The novel hot air circulating tunnel oven door hinge mechanism according to claim 1, characterized in that, The left end of the door fixing seat (10) is provided with a first fixing hole (11), and the middle and right ends are provided with first mounting holes (12), wherein: The top end of the first hinge shaft (40) is fixedly welded into the first fixing hole (11); The first mounting hole (12) is detachably mounted on the top and bottom of the oven door using fasteners.

3. The novel hot air circulating tunnel oven door hinge mechanism according to claim 1, characterized in that, The hinge body (20) is a square plate structure, with a first hinge hole (21) extending vertically through its left end and a second hinge hole (22) extending vertically through its right end, wherein: The lower middle end of the first hinge shaft (40) is hinged in the first hinge hole (21), and the upper end of the second hinge shaft (50) is hinged in the second hinge hole (22).

4. The novel hot air circulating tunnel oven door hinge mechanism according to claim 1, characterized in that, The hinge mounting base (30) is a square plate structure with a second fixing hole (31) running vertically through its center, second mounting holes (32) at both the left and right corners, and a shim (33) at the center of its back. The lower end of the second hinge shaft (50) is hinged in the second fixing hole (31), and each of the second mounting holes (32) is fixedly installed on the oven wall panel with fasteners.

5. The novel hot air circulating tunnel oven door hinge mechanism according to claim 1, characterized in that, The top end of the first hinge shaft (40) is vertically fixed in the first fixing hole (11) at the left end of the door fixing seat (10), and the lower end is rotatably installed in the first hinge hole (21) at the left end of the hinge body (20).

6. The novel hot air circulating tunnel oven door hinge mechanism according to claim 5, characterized in that, The middle and lower ends of the first hinge shaft (40) are respectively movably fitted with first hinge washers (42), wherein: The two first hinge pads (42) are respectively embedded at the top entrance or bottom entrance of the first hinge hole (21) at the left end of the hinge body (20), and are arranged symmetrically from top to bottom.

7. The novel hot air circulating tunnel oven door hinge mechanism according to claim 5, characterized in that, A first washer (41) is fitted on the first hinge shaft (40) between the door fixing seat (10) and the hinge body (20), and The bottom end of the first hinge shaft (40) is fixedly mounted to the bottom left end of the hinge body (20) by a first bolt (43) and a second washer (44).

8. The novel hot air circulating tunnel oven door hinge mechanism according to claim 1, characterized in that, The upper and middle ends of the second hinge shaft (50) are respectively movably fitted with second hinge washers (51), wherein: The two second hinge pads (51) are respectively embedded at the top entrance or bottom entrance of the second hinge hole (22) on the right end of the hinge body (20), and are arranged symmetrically from top to bottom.

9. The novel hot air circulating tunnel oven door hinge mechanism according to claim 8, characterized in that, The top end of the second hinge shaft (50) is fixedly mounted to the top right end of the hinge body (20) by a third washer (52) and a second bolt (53); and The bottom end of the second hinge shaft (50) is fixedly mounted to the bottom right end of the hinge mounting base (30) by a fourth washer (54) and a third bolt (55).

10. The novel hot air circulating tunnel oven door hinge mechanism according to claim 1, characterized in that, The door fixing seat (10), hinge body (20), hinge mounting seat (30), first hinge shaft (40) and second hinge shaft (50) are all made of stainless steel or aluminum alloy.

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