Leak detection device for high-efficiency filter of tunnel oven

Abstract

The utility model relates to the technical field of tunnel oven filter detection, in particular to a tunnel oven high-efficiency filter leak detection device, which comprises a longitudinal movement structure, a transverse movement structure, a particle counter and a mounting bracket, the longitudinal movement structure is arranged in the longitudinal direction. The transverse movement structure is transversely arranged on the longitudinal movement structure, and the longitudinal movement structure drives the transverse movement structure to move longitudinally; the particle counter is provided with a scanning head, the scanning head is installed on the transverse movement structure and moves along with the transverse movement structure, and the scanning head is connected with the particle counter in a wired or wireless mode and used for detecting the leakage condition. And the mounting bracket is fixed on the lower surface of the longitudinal movement structure and is adjustable in height. The utility model provides a high-efficiency and automatic leak detection device, which effectively improves leak detection efficiency, reduces manual operation, saves time and manpower resources, and is suitable for tunnel drying ovens in sterile medicine production and other occasions requiring leak detection of high-efficiency filters.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel oven filter detection, in particular to a tunnel oven high efficiency filter leakage detection device. Background Art

[0002] The high-temperature tunnel oven used by pharmaceutical manufacturers is mainly used for high-temperature sterilization of sterile products such as vials. The tunnel oven heating elements and high-efficiency filters are installed on the top of the oven, and the interior provides a high-temperature clean space. For sterile products, the high-temperature tunnel oven is one of the important equipment to provide sterility assurance.

[0003] The hot air of the tunnel drying oven is filtered through a high-efficiency filter to remove pollutants such as fine dust, bacteria and viruses, ensuring the dry quality of the material surface and the sanitation of the processing environment. After the high-temperature and high-efficiency filter is installed on the equipment, it is necessary to determine whether its installation meets the requirements and whether there is any leakage. Therefore, leak detection of the high-temperature and high-efficiency filter is a necessary measure to determine whether the tunnel drying oven meets the requirements. However, due to the narrow space between the high-efficiency filter and the conveyor belt of the tunnel drying oven, it is quite time-consuming and laborious to perform a leak detection scan with a particle counter. It requires thin personnel to drill into the gap in the middle and conduct a slow scan with a handheld scanning head, which is inefficient.

[0004] Therefore, there is an urgent need for a leak detection device for a tunnel oven high efficiency filter suitable for the production of sterile drugs. Utility Model Content

[0005] The purpose of the utility model is to provide a tunnel oven high efficiency filter leak detection device, aiming to realize the automation of the leak detection process, improve the leak detection efficiency, and reduce the difficulty of manual operation, thereby solving the technical problems in the background technology.

[0006] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: a tunnel oven high efficiency filter leak detection device, comprising: a longitudinal motion structure, a transverse motion structure, a particle counter and a mounting bracket;

[0007] The longitudinal motion structure is arranged in the longitudinal direction; the transverse motion structure is arranged in the transverse direction and is arranged on the longitudinal motion structure, and the longitudinal motion structure drives the transverse motion structure to move longitudinally;

[0008] The particle counter is provided with a scanning head, which is mounted on the lateral motion structure and moves with the lateral motion structure, and the scanning head is connected to the particle counter by wire or wireless means, and is used for detecting the high efficiency filter;

[0009] The mounting bracket is fixed on the lower surface of the longitudinal motion structure and can be adjusted in height.

[0010] Further, the longitudinal motion structure comprises: a longitudinal mounting base, a first lead screw, a first nut slider, two guide rails and a first servo motor;

[0011] The longitudinal mounting base serves as the main frame of the longitudinal motion structure and is used to support the entire longitudinal motion structure;

[0012] The first lead screw is arranged in the longitudinal direction and is rotatably connected to the longitudinal mounting base;

[0013] The first nut slider is sleeved on the first lead screw and is slidably connected to the guide rail;

[0014] The two guide rails are arranged longitudinally and symmetrically on both sides of the first lead screw, and the guide rails are fixed on the longitudinal mounting base;

[0015] The first servo motor is fixed on the longitudinal mounting base and connected to one end of the first lead screw. The first servo motor drives the first lead screw to rotate, and the rotation of the first lead screw drives the first nut slider to move along the guide rail.

[0016] Further, the lateral motion structure includes a lateral mounting base, a second lead screw, a second nut slider, two guide slide bars and a second servo motor;

[0017] The lateral mounting base serves as the main structure of the lateral motion structure and is fixed above the first nut slider;

[0018] The second lead screw is arranged in the transverse direction and is rotatably connected to the transverse mounting base;

[0019] The second nut slider is sleeved on the second lead screw and is slidably connected to the guide slider;

[0020] The two guide slide bars are arranged in a transverse direction and symmetrically on both sides of the second lead screw, and the guide slide bars are fixed on a transverse mounting base to provide guidance for the second nut slide block;

[0021] The second servo motor is fixed on the transverse mounting base and connected to one end of the second lead screw. The second servo motor drives the second lead screw to rotate, and the rotation of the second lead screw drives the second nut slider to move along the guide slide rod.

[0022] Furthermore, a support frame is arranged on the second nut slider, and a video probe and a scanning head of a particle counter are arranged on the support frame.

[0023] Furthermore, an adjustable foot with a threaded rod is provided at the bottom of the mounting bracket, and the height of the leak detection device can be adjusted by rotating the foot.

[0024] Furthermore, scales are provided on the sides of the longitudinal motion structure and the transverse motion structure.

[0025] Beneficial Effects

[0026] The utility model provides an efficient and automated tunnel oven high efficiency filter leak detection device, which effectively improves the leak detection efficiency, reduces manual operations, saves time and human resources, and is suitable for tunnel ovens in sterile drug production and other occasions requiring high efficiency filter leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic diagram of the overall structure of the leak detection device disclosed in the utility model;

[0029] Figure 2 It is a top view of the leak detection device disclosed in the utility model;

[0030] Figure 3 It is a structural schematic diagram of the longitudinal motion structure of the leak detection device disclosed in the utility model;

[0031] Figure 4 It is a structural schematic diagram of the lateral motion structure of the leak detection device disclosed by the utility model.

[0032] In the figure:

[0033] 1. Longitudinal motion structure; 101. Longitudinal mounting base; 102. First lead screw; 103. First nut slider; 104. Guide rail; 105. First servo motor;

[0034] 2. lateral motion structure; 201. lateral mounting base; 202. second lead screw; 203. second nut slider; 204. guide slider; 205. second servo motor;

[0035] 3. Mounting bracket; 4. Scanning head; 5. Foot; 6. Support frame. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0037] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: Figure 1-4 As shown, a tunnel oven high efficiency filter leak detection device comprises: a longitudinal motion structure 1, a transverse motion structure 2, a particle counter and a mounting bracket 3;

[0038] The longitudinal motion structure 1 is arranged along the longitudinal direction to realize longitudinal movement; the transverse motion structure 2 is arranged along the transverse direction and is arranged on the longitudinal motion structure 1 to realize transverse movement;

[0039] The particle counter is provided with a scanning head 4, which is mounted on the lateral moving structure 2 and moves with the lateral moving structure 2. The scanning head 4 is connected to the particle counter by wire or wireless means and is used to detect the usage of the high efficiency filter. The particle counter is a device used for leak detection of the high efficiency filter. The scanning head 4 of the particle counter is used to scan and inspect the entire air outlet surface of the high efficiency filter. The particle counter can count the number of dust particles at each point and can also compare the local efficiency of each point to determine the usage of the high efficiency filter.

[0040] The mounting bracket 3 is fixed to the lower surface of the longitudinal motion structure 1 and can be adjusted in height.

[0041] The transverse motion structure 2 carries the scanning head 4 of the particle counter. The scanning head 4 moves in the transverse and longitudinal directions through the cooperation of the longitudinal motion structure 1 and the transverse motion structure 2, thereby achieving a comprehensive scan of the high-efficiency filter.

[0042] Further, such as Figure 1-3 As shown, the longitudinal motion structure 1 is a ball screw structure, including: a longitudinal mounting base 101, a first screw 102, a first nut slider 103, two guide rails 104 and a first servo motor 105;

[0043] The longitudinal mounting base 101 serves as the main structure of the longitudinal motion structure 1 and is used to support the entire longitudinal motion structure 1;

[0044] The first lead screw 102 is a long threaded rod; the first lead screw 102 is arranged along the longitudinal direction and is rotatably connected to the longitudinal mounting base 101;

[0045] The lateral motion structure 2 is installed on the upper surface of the first nut slider 103; the first nut slider 103 is a slider with a nut, which can move along the first screw 102; the first nut slider 103 is mounted on the first screw 102 and is slidably connected to the guide rail 104; the first nut slider 103 is connected to the longitudinal mounting base 101 through the guide rail 104, and the first screw 102 passes through the first nut slider 103 and is connected to the first nut slider 103 through a nut.

[0046] Two guide rails 104 are arranged longitudinally and symmetrically on both sides of the first lead screw 102. The guide rails 104 are fixed on the longitudinal mounting base 101. The guide rails 104 support the first nut slider 103 and the lateral motion structure 2 mounted thereon. At the same time, the guide rails 104 also provide guidance for the first nut slider 103.

[0047] The first servo motor 105 is fixed to the longitudinal mounting base 101 and connected to one end of the first lead screw 102 . The first servo motor 105 drives the first lead screw 102 to rotate. The rotation of the first lead screw 102 drives the first nut slider 103 to move along the guide rail 104 , thereby realizing the longitudinal movement of the lateral motion structure 2 .

[0048] Further, such as Figure 4 As shown, the lateral motion structure 2 is fixed on the first nut slider 103 and is a ball screw structure similar to the longitudinal motion structure 1; it includes a lateral mounting base 201, a second screw 202, a second nut slider 203, a second servo motor 205 and two guide slide bars 204;

[0049] The transverse mounting base 201 serves as the main structure of the transverse motion structure 2 and is fixed above the first nut slider 103;

[0050] The second lead screw 202 is a long threaded rod; the second lead screw 202 is arranged in the horizontal direction and is rotatably connected to the horizontal mounting base 201;

[0051] The second nut slider 203 is sleeved on the second lead screw 202 and is slidably connected to the guide slider 204;

[0052] Two guide slide bars 204 are arranged in the transverse direction and symmetrically on both sides of the second lead screw 202. The guide slide bars 204 are fixed on the transverse mounting base 201 to provide guidance for the second nut slide block 203.

[0053] The second servo motor 205 is fixed on the transverse mounting base 201 and connected to one end of the second lead screw 202. The second servo motor 205 drives the second lead screw 202 to rotate. The rotation of the second lead screw 202 drives the second nut slider 203 to move along the guide slide rod 204, thereby driving the scanning head 4 to move horizontally.

[0054] Furthermore, a support frame 6 is provided on the transverse motion structure 2, and the support frame 6 is installed above the second nut slider 203 of the transverse motion structure 2; a particle counter scanning head 4 is provided on the support frame 6; and a video probe is also provided on the support frame 6, and the video probe is used to record the leak detection process for subsequent analysis. The support frame 6 carries the particle counter scanning head 4 and the video probe, and moves in the transverse and longitudinal directions in cooperation with the longitudinal motion structure 1 and the transverse motion structure 2 to achieve a comprehensive scan of the high-temperature and high-efficiency filter.

[0055] In another embodiment, the support frame 6 is mounted on a lifting structure, which is fixed above the second nut slider 203. The lifting structure can be an electric push rod or a cylinder. The height of the support frame 6 can be adjusted by the lifting structure to make the scanning head 4 on the support frame 6 close to or away from the high-efficiency filter.

[0056] Furthermore, an adjustable foot 5 with a threaded rod is provided at the bottom of the mounting bracket 3, and the foot 5 is rotated to adjust the height to adapt to high-efficiency filters installed at different heights; the mounting bracket 3 ensures that the leak detection device is stably installed under the high-efficiency filter and allows the distance from the high-efficiency filter to be adjusted.

[0057] Furthermore, scales are provided on the sides of the longitudinal motion structure 1 and the transverse motion structure 2 to facilitate accurate adjustment of the positions of the longitudinal motion structure 1 and the transverse motion structure 2 during use.

[0058] Furthermore, the leak detection device is also provided with a PLC controller, which is an electronic control unit including a microprocessor and an input and output interface; the PLC controller is responsible for receiving sensor signals, processing data, and controlling the actions of the first servo motor 105 and the second servo motor 205; and automatically adjusting the position and speed of the scanning head 4 according to a preset program to realize automated leak detection.

[0059] These components work together to realize the automatic leak detection function of the tunnel oven high-efficiency filter. By precisely controlling the servo motor, the PLC controller can command the leak detection device to perform precise scanning under the high-temperature high-efficiency filter to detect whether there is a leak. The video probe records the entire process for subsequent analysis.

[0060] Working principle and usage process:

[0061] Place the leak detection device under the high temperature and high efficiency filter, and adjust the height of the mounting bracket 3 to ensure that the particle counter scanning head 4 maintains a distance of 5 cm to 10 cm from the high efficiency filter.

[0062] The moving speed of the longitudinal moving structure 1 (about 5 cm / s) is set by the PLC controller, and the moving speed of the transverse moving structure 2 is adjusted to meet different leak detection requirements.

[0063] The particle counter is turned on, and the second servo motor 205 controls the transverse motion structure 2 to drive the scanning head 4 to move and scan in the transverse direction. After scanning, the longitudinal motion structure 1 then drives the transverse motion structure 2 to move a certain distance in the longitudinal direction, and then moves and scans in the transverse direction again.

[0064] Repeat the above steps until all high-efficiency filters are covered and the leak detection is completed.

[0065] After the leak test is completed, the performance of the HEPA filter can be evaluated by analyzing the video recording and the data from the particle counter.

[0066] Through the above process, the automatic leak detection device for high efficiency filter of the tunnel drying oven of the present patent application can effectively detect the potential leakage of the high efficiency filter, and ensure the cleanliness of the tunnel drying oven and the quality of the sterile product. This automated leak detection method not only improves the leak detection efficiency, but also reduces the difficulty and risk of manual operation.

[0067] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A tunnel oven high efficiency filter leak detection device, characterized in that: include: A longitudinal motion structure (1), a transverse motion structure (2), a particle counter and a mounting bracket (3); The longitudinal motion structure (1) is arranged in the longitudinal direction; the transverse motion structure (2) is arranged in the transverse direction and is arranged on the longitudinal motion structure (1), and the longitudinal motion structure (1) drives the transverse motion structure (2) to move in the longitudinal direction; The particle counter is provided with a scanning head (4), the scanning head (4) is mounted on the lateral motion structure (2) and moves therewith, the scanning head (4) is connected to the particle counter via a wired or wireless method, and is used to detect the high efficiency filter; The mounting bracket (3) is fixed on the lower surface of the longitudinal motion structure (1) and can be adjusted in height.

2. The tunnel oven high efficiency filter leak detection device according to claim 1 is characterized in that: The longitudinal motion structure (1) comprises: a longitudinal mounting base (101), a first lead screw (102), a first nut slider (103), two guide rails (104) and a first servo motor (105); The longitudinal mounting base (101) serves as the main structure of the longitudinal motion structure (1) and is used to support the entire longitudinal motion structure (1); The first lead screw (102) is arranged in the longitudinal direction and is rotatably connected to the longitudinal mounting base (101); The first nut slider (103) is sleeved on the first lead screw (102) and is slidably connected to the guide rail (104); The two guide rails (104) are arranged longitudinally and symmetrically on both sides of the first lead screw (102), and the guide rails (104) are fixed on a longitudinal mounting base (101); The first servo motor (105) is fixed on the longitudinal mounting base (101) and connected to one end of the first lead screw (102). The first servo motor (105) drives the first lead screw (102) to rotate. The rotation of the first lead screw (102) drives the first nut slider (103) to move along the guide rail (104).

3. The tunnel oven high efficiency filter leak detection device according to claim 2 is characterized in that: The lateral motion structure (2) comprises a lateral mounting base (201), a second lead screw (202), a second nut slider (203), two guide sliders (204) and a second servo motor (205); The transverse mounting base (201) serves as the main structure of the transverse motion structure (2) and is fixed above the first nut slider (103); The second lead screw (202) is arranged in a transverse direction and is rotatably connected to the transverse mounting base (201); The second nut slider (203) is sleeved on the second lead screw (202) and is slidably connected to the guide slider (204); The two guide slide bars (204) are arranged in a transverse direction and symmetrically on both sides of the second lead screw (202); the guide slide bars (204) are fixed on a transverse mounting base (201) to provide guidance for the second nut slide block (203); The second servo motor (205) is fixed on the transverse mounting base (201) and connected to one end of the second lead screw (202). The second servo motor (205) drives the second lead screw (202) to rotate. The rotation of the second lead screw (202) drives the second nut slider (203) to move along the guide slide rod (204).

4. The tunnel oven high efficiency filter leak detection device according to claim 3 is characterized in that: A support frame (6) is arranged on the second nut slider (203), and a video probe and a scanning head (4) of a particle counter are arranged on the support frame (6).

5. The tunnel oven high efficiency filter leak detection device according to claim 1, characterized in that: An adjustable foot (5) with a threaded rod is provided at the bottom of the mounting bracket (3), and the height of the leak detection device can be adjusted by rotating the foot (5).

6. The tunnel oven high efficiency filter leak detection device according to claim 1, characterized in that: Scales are provided on the side surfaces of the longitudinal motion structure (1) and the transverse motion structure (2).

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