Laminar flow hot air sterilization tunnel oven

Abstract

The utility model discloses a laminar hot -blast sterilization tunnel oven, including support platform and oven main part, be equipped with conveyer belt in the oven main part, be connected with two groups of intercommunication arrangement's air inlet casing on the oven main part, and every group air inlet casing of air inlet of all is connected with primary efficiency filter, the inner wall of air inlet casing is equipped with two groups of mounting frame, and two groups of mounting frame are installed respectively in the medium -efficiency filter, high -efficient filter, and the inner chamber of air inlet casing is equipped with fan and heating pipe, limiting structure, the limiting structure includes the rotary cover that rotates and is established in the outside of air inlet casing, cleaning subassembly, the cleaning subassembly includes the fixed frame that establishes on the air inlet casing, be equipped with the rotating roller on the fixed frame, and the outer wall of rotating roller is covered with the dust -stained cover. The utility model discloses cleaning subassembly can utilize the viscosity of dust -stained cover and clean primary efficiency filter, avoid its jam and influence air inlet efficiency, and the limiting structure is convenient for the replacement of medium -efficiency filter, high -efficient filter, effectively guarantees the air in the oven for clean.

Description

Technical Field

[0001] This utility model relates to the field of sterilization tunnel oven technology, and in particular to a laminar flow hot air sterilization tunnel oven. Background Technology

[0002] Laminar flow hot air sterilization tunnel ovens are key equipment in the pharmaceutical and medical device industries, primarily used for drying, sterilizing, and depyrogenating containers such as vials and ampoules. Their core working principle involves providing unidirectional laminar flow hot air with a cleanliness level of A through a high-temperature resistant filter. This high-temperature section (typically ≥300℃) kills microorganisms and destroys pyrogens, making them widely applicable in sterile injectable drug production lines.

[0003] Existing laminar flow hot air sterilization tunnel ovens have the following shortcomings in use: the filters on the ovens are mostly fixedly installed at the air inlet of the oven. Over time, the filters are prone to clogging. The fixedly installed filters are inconvenient to clean and replace, which affects the air intake efficiency, sterilization and drying effect of the oven.

[0004] Therefore, those skilled in the art have proposed a laminar flow hot air sterilization tunnel oven to solve the problems mentioned above. Utility Model Content

[0005] 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.

[0006] In view of the above-mentioned laminar flow hot air sterilization tunnel oven, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a laminar flow hot air sterilization tunnel oven, which solves the problem of inconvenient cleaning and replacement of filters on the oven.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a laminar flow hot air sterilization tunnel oven, including a support platform and an oven body, wherein a conveyor belt is provided inside the oven body;

[0009] The oven body is connected to two sets of interconnected air inlet hoods. Each air inlet hood is connected to a primary filter. The inner wall of the air inlet hood is provided with two sets of mounting frames. A medium-efficiency filter and a high-efficiency filter are respectively installed in the two sets of mounting frames. The inner cavity of the air inlet hood is provided with a fan and a heating tube.

[0010] A limiting structure, the limiting structure including a rotating cover plate rotatably disposed on the outside of the air inlet hood, for the assembly and disassembly of two sets of mounting frames;

[0011] The cleaning assembly includes a fixed frame mounted on the air inlet hood, a rotating roller mounted on the fixed frame, and a dust-collecting sleeve fitted on the outer wall of the rotating roller for cleaning the primary filter.

[0012] As a preferred embodiment of the laminar flow hot air sterilization tunnel oven of this utility model, both sets of mounting frames penetrate through the air inlet hood, and each set of air inlet hoods has a handle fixedly attached to its outer wall.

[0013] As a preferred embodiment of the laminar flow hot air sterilization tunnel oven of this utility model, the limiting structure includes a telescopic rod fixed to the outer wall of the air inlet hood, and the end of the telescopic rod away from the mounting frame is rotatably connected to the rotating cover plate through a bearing.

[0014] In a preferred embodiment of the laminar flow hot air sterilization tunnel oven of this utility model, the outer wall of the telescopic rod is fitted with a spring, and the spring is located between the air inlet hood and the rotating cover plate.

[0015] As a preferred embodiment of the laminar flow hot air sterilization tunnel oven of this utility model, the cleaning component further includes a through groove formed on the fixed frame, a slide block slidably connected in the through groove, and the slide block being rotatably connected to the rotating roller through a bearing.

[0016] In a preferred embodiment of the laminar flow hot air sterilization tunnel oven of this utility model, a motor is fixedly connected to the fixed frame, and a lead screw is connected to the output end of the motor.

[0017] As a preferred embodiment of the laminar flow hot air sterilization tunnel oven of this utility model, the lead screw is threadedly connected to a threaded block, and the side of the threaded block near the rotating roller is fixedly connected to the slide block.

[0018] As a preferred embodiment of the laminar flow hot air sterilization tunnel oven of this utility model, both ends of the oven body are movably connected to a sealing door via hinges, and the sealing door is provided with a handle.

[0019] The beneficial effects of this utility model are as follows: By operating the motor on the cleaning component, the lead screw can be driven to rotate. After the threaded block connected to the lead screw is slidably limited by the sliding groove and the slide seat, the rotating roller can roll on the surface of the primary filter. The adhesiveness of the dust-adhesive sleeve is used to clean the impurities remaining on the primary filter, preventing it from clogging and affecting the air intake efficiency of the laminar flow hot air sterilization tunnel oven. The rotating cover plate on the limiting structure can be rotated to move away from the outside of the mounting frame, which facilitates the disassembly of the two sets of mounting frames and the disassembly and replacement of the medium-efficiency filter and the high-efficiency filter. This effectively ensures that the air entering the oven is clean and improves the sterilization and drying effect of the laminar flow hot air sterilization tunnel oven. Attached Figure Description

[0020] 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. Wherein:

[0021] Figure 1 This is a schematic diagram of the overall structure of a laminar flow hot air sterilization tunnel oven according to the present invention.

[0022] Figure 2 This is a front cross-sectional view of the air inlet hood of a laminar flow hot air sterilization tunnel oven according to the present invention.

[0023] Figure 3 This is a schematic diagram of the connection structure between the air inlet hood, the limiting structure, and the cleaning component of a laminar flow hot air sterilization tunnel oven according to this utility model.

[0024] Figure Descriptions: 100, Support platform; 101, Oven body; 102, Conveyor belt; 103, Sealed door; 104, Air inlet hood; 105, Primary filter; 106, Mounting frame; 107, Medium-efficiency filter; 108, High-efficiency filter; 109, Fan; 110, Heating element; 111, Handle; 200, Limiting structure; 201, Telescopic rod; 202, Spring; 203, Rotating cover plate; 300, Cleaning assembly; 301, Fixing frame; 302, Through groove; 303, Slide seat; 304, Rotating roller; 305, Dust-collecting sleeve; 306, Motor; 307, Lead screw; 308, Threaded block. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0029] Example 1

[0030] Reference Figures 1 to 3 This is the first embodiment of the present utility model. This embodiment provides a laminar flow hot air sterilization tunnel oven, which can achieve the effect of easy cleaning and filter replacement. It includes a support platform 100 and an oven body 101, and a conveyor belt 102 is provided inside the oven body 101.

[0031] The oven body 101 is connected to two sets of interconnected air inlet hoods 104. Each air inlet hood 104 is connected to a primary filter 105. The inner wall of the air inlet hood 104 is provided with two sets of mounting frames 106. The two sets of mounting frames 106 are respectively installed with a medium-efficiency filter 107 and a high-efficiency filter 108. The inner cavity of the air inlet hood 104 is provided with a fan 109 and a heating tube 110.

[0032] It should be noted that the electrical terminals of each electrical device are electrically connected to the power supply and controller via wires. The pre-filter 106 (a G4 or F6 grade non-woven fabric filter) filters larger particles such as dust, fibers, and insects carried in the fresh and return air. Its purpose is to protect the medium-efficiency filter 107 (an F7-F9 grade panel filter), the high-efficiency filter 108 (a high-temperature resistant HEPA filter), and subsequent heating elements 110 and the fan 109, preventing them from being contaminated or clogged by large particles and extending their service life. The medium-efficiency filter 107 captures even smaller particles, further reducing the load on the high-efficiency filter 108. The fan 10... After heating tube 110 and heating element 9 are working, filtered hot air enters. High-efficiency filter 108 is responsible for filtering out all particles ≥0.3μm with a filtration efficiency of over 99.97%. The hot air filtered by it forms a vertical or horizontal unidirectional laminar flow, providing a sterile, dust-free, and pyrogen-free Class A clean environment for the oven body 101. With the operation of conveyor belt 102, sterilization and drying of containers such as vials and ampoules are achieved. Due to the extremely high ambient temperature, the filter material (usually glass fiber) and sealing material (such as silicone or glass fiber gaskets) of high-efficiency filter 108 must be heat-resistant, otherwise they will melt, decompose, or cause leakage.

[0033] The limiting structure 200 includes a rotating cover plate 203 rotatably disposed on the outside of the air inlet shroud 104 for assembling and disassembling the two sets of mounting frames 106.

[0034] The cleaning assembly 300 includes a fixing frame 301 mounted on the air inlet hood 104. The fixing frame 301 is equipped with a rotating roller 304, and the outer wall of the rotating roller 304 is fitted with a dust-adhesive sleeve 305 for cleaning the primary filter 105.

[0035] During use, the rotating roller 304 of the cleaning component 300 can roll back and forth on the surface of the primary filter 105. The ash-adhesive sleeve 305 is sticky and can stick the debris on the surface of the primary filter 105 to the ash-adhesive sleeve 305, preventing it from clogging and affecting the air intake efficiency of the laminar flow hot air sterilization tunnel oven. The rotating cover 203 of the limiting structure 200 can rotate, allowing it to be moved away from the outside of the two sets of mounting frames 106, which facilitates the disassembly and replacement of the medium-efficiency filter 107 and the high-efficiency filter 108. This effectively ensures that the air entering the oven body 101 is clean and improves the sterilization and drying effect of the laminar flow hot air sterilization tunnel oven.

[0036] Example 2

[0037] Reference Figures 1 to 3 This is the second embodiment of the present utility model. Unlike the previous embodiment, both sets of mounting frames 106 penetrate through the air inlet hood 104, and each set of air inlet hood 104 has a handle 111 fixedly connected to its outer wall.

[0038] The limiting structure 200 includes a telescopic rod 201 fixed to the outer wall of the air inlet cover 104, and the end of the telescopic rod 201 away from the mounting frame 106 is rotatably connected to the rotating cover plate 203 through a bearing.

[0039] The telescopic rod 201 has a spring 202 on its outer wall, which is located between the air inlet hood 104 and the rotating cover 203. The elasticity of the spring 202 allows the rotating cover 203 to press the handle 111 at all times, so that the mounting frame 106 is stably installed inside the air inlet hood 104. When disassembling, the rotating cover 203 rotates away from the outside of the handle 111, which facilitates the replacement of the medium-efficiency filter 107 and the high-efficiency filter 108 in the two sets of mounting frames 106.

[0040] The cleaning component 300 also includes a through groove 302 formed on the fixed frame 301, a slide block 303 is slidably connected in the through groove 302, and the slide block 303 is rotatably connected to the rotating roller 304 through a bearing.

[0041] Among them, a motor 306 is fixedly connected to the fixed frame 301, and a lead screw 307 is connected to the output end of the motor 306.

[0042] The lead screw 307 is threadedly connected to a threaded block 308, and the side of the threaded block 308 near the rotating roller 304 is fixedly connected to the slide block 303. The operation of the motor 306 drives the lead screw 307 to rotate. After the threaded block 308, which is threadedly connected to the lead screw 307, is limited by sliding through the slide groove 302 and the slide block 303, the rotating roller 304 can roll back and forth. The dust-adhesive sleeve 305 is fitted on the rotating roller 304 for easy replacement.

[0043] Both ends of the oven body 101 are connected to a sealing door 103 via hinges, and the sealing door 103 is equipped with a handle. The sealing door 103, which is connected by hinges, is easy to open and close, and facilitates the entry of containers such as vials and ampoules. When drying, closing the sealing door 103 prevents heat leakage.

[0044] When in use, the sealing door 103 is opened, and the conveyor belt 102 transports containers such as vials and ampoules into the oven body 101. Then, the sealing door 103 is closed, and the fan 109 and heating tube 110 are started, so that the air passes through the pre-filter 105 and the medium-efficiency filter 107 to filter the air. The heated air then passes through the high-efficiency filter 108. The hot air filtered by it forms a vertical or horizontal unidirectional laminar flow, providing a sterile, dust-free, and pyrogen-free Class A clean environment for the oven body 101, realizing the sterilization and drying of containers such as vials and ampoules.

[0045] The motor 306 on the cleaning assembly 300 drives the lead screw 307 to rotate. After the threaded block 308, which is threaded to the lead screw 307, is limited by the sliding groove 302 and the slide block 303, the rotating roller 304 can roll back and forth on the surface of the primary filter 105. The stickiness of the dust-adhesive sleeve is used to clean the impurities remaining on the primary filter 105, so as to avoid clogging and affecting the air intake efficiency of the laminar flow hot air sterilization tunnel oven. After the rotating cover 203 on the limiting structure 200 rotates, it can move away from the outside of the mounting frame 106. The handle 111 can pull out the two sets of mounting frames 106, so that they are separated from the air inlet hood 104, which facilitates the replacement of the medium-efficiency filter 107 and the high-efficiency filter 108, ensuring that the air entering the oven is clean.

[0046] It is worth noting that the entire device is controlled by a controller. Since the controller is a common device and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0047] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0048] 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 laminar flow hot air sterilization tunnel oven, comprising a support platform (100) and an oven body (101), wherein a conveyor belt (102) is provided inside the oven body (101), characterized in that... ； The oven body (101) is connected to two sets of interconnected air inlet hoods (104). Each air inlet hood (104) has a primary filter (105) connected to its air inlet. The inner wall of the air inlet hood (104) is provided with two sets of mounting frames (106). The two sets of mounting frames (106) are respectively equipped with a medium-efficiency filter (107) and a high-efficiency filter (108). The inner cavity of the air inlet hood (104) is provided with a fan (109) and a heating tube (110). The limiting structure (200) includes a rotating cover plate (203) rotatably disposed on the outside of the air inlet hood (104) for assembling and disassembling the two sets of mounting frames (106); The cleaning assembly (300) includes a fixing frame (301) disposed on the air inlet hood (104), the fixing frame (301) is provided with a rotating roller (304), and the outer wall of the rotating roller (304) is covered with a dust-adhesive sleeve (305) for cleaning the primary filter (105).

2. The laminar flow hot air sterilization tunnel oven according to claim 1, characterized in that: Both sets of mounting frames (106) penetrate through the air inlet hood (104), and each set of air inlet hood (104) has a handle (111) fixed to its outer wall.

3. The laminar flow hot air sterilization tunnel oven according to claim 1, characterized in that: The limiting structure (200) includes a telescopic rod (201) fixed to the outer wall of the air inlet hood (104), and the end of the telescopic rod (201) away from the mounting frame (106) is rotatably connected to the rotating cover plate (203) through a bearing.

4. The laminar flow hot air sterilization tunnel oven according to claim 3, characterized in that: The outer wall of the telescopic rod (201) is fitted with a spring (202), which is located between the air inlet cover (104) and the rotating cover plate (203).

5. The laminar flow hot air sterilization tunnel oven according to claim 1, characterized in that: The cleaning assembly (300) further includes a through groove (302) formed on the fixed frame (301), and a slide block (303) is slidably connected in the through groove (302), and the slide block (303) is rotatably connected to the rotating roller (304) through a bearing.

6. The laminar flow hot air sterilization tunnel oven according to claim 5, characterized in that: A motor (306) is fixedly connected to the fixed frame (301), and a lead screw (307) is connected to the output end of the motor (306).

7. The laminar flow hot air sterilization tunnel oven according to claim 6, characterized in that: The lead screw (307) is threaded with a threaded block (308), and the side of the threaded block (308) near the rotating roller (304) is fixedly connected to the slide block (303).

8. The laminar flow hot air sterilization tunnel oven according to claim 1, characterized in that: Both ends of the oven body (101) are connected to a sealing door (103) via hinges, and the sealing door (103) is equipped with a handle.

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