CN214702624U - Air leakage detection device for packaged food - Google Patents

Air leakage detection device for packaged food Download PDF

Info

Publication number
CN214702624U
CN214702624U CN202120706775.6U CN202120706775U CN214702624U CN 214702624 U CN214702624 U CN 214702624U CN 202120706775 U CN202120706775 U CN 202120706775U CN 214702624 U CN214702624 U CN 214702624U
Authority
CN
China
Prior art keywords
detection
plate
sealing cover
conveyer belt
food
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202120706775.6U
Other languages
Chinese (zh)
Inventor
郭晋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yuncheng University
Original Assignee
Yuncheng University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yuncheng University filed Critical Yuncheng University
Priority to CN202120706775.6U priority Critical patent/CN214702624U/en
Application granted granted Critical
Publication of CN214702624U publication Critical patent/CN214702624U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Examining Or Testing Airtightness (AREA)

Abstract

The application provides a gas leakage detection device of packaged food, including the conveyer belt, the both sides of conveyer belt all are equipped with the limiting plate, one of them the limiting plate is kept away from one side of conveyer belt and is fixed and be equipped with a motor, the pivot of a motor passes the limiting plate and is connected, two with the driving roller transmission of conveyer belt fixed being equipped with the pick-up plate that is located the conveyer belt top between the limiting plate, the front end and the rear end of pick-up plate all are equipped with the inclined plane, the top of pick-up plate is equipped with detection module, detection module includes drive mechanism and detection mechanism. According to the food conveying device, the detection assembly is enabled to cover the food for detection through the detection mechanism and circularly move around the air exhaust mechanism, so that the detection is realized in the conveying process, the food does not need to be moved, and the problem that the food is easily crushed in the prior art is solved; through the detection assembly who sets up, the difficult problem of observing of testing result among the prior art has been solved.

Description

Air leakage detection device for packaged food
Technical Field
The utility model relates to a food detection area particularly, relates to a gas leakage detection device of packing food.
Background
According to the utility model (application No. 201721496613.4), the gas leakage detection device for the food packaging bag comprises a bottom plate, a first mounting plate, a gas leakage detection box and a pressure detection table, wherein the bottom plate is provided with uniformly distributed first brackets, the top ends of the first brackets are welded with the first mounting plate, the first mounting plate is provided with the gas leakage detection box, the top end and the bottom end of the gas leakage detection box are respectively provided with a feed inlet and a discharge outlet, and feed inlet and discharge gate are located the top and the below of first mounting panel, and feed inlet one side is equipped with the stock guide, is equipped with first conveyer belt on the bottom plate, and the discharge gate is located the top of first conveyer belt, and the inside of gas leakage detection case is equipped with the pivot, and the one end of pivot is connected with driving motor, is equipped with four rotor plates of evenly distributed on the side wall of pivot, and rotor plate and gas leakage detection case's inner wall sealing sliding connection, the top of first mounting panel is equipped with negative-pressure air fan. The device has simple structure and high working efficiency, can be applied to the detection of the air leakage of food packages on a production line, and saves manpower.
However, in the using process of the gas leakage detection device, food needs to fall into the gas leakage detection box, the process easily causes the food such as biscuits to be broken, the integrity of the food is affected, and secondly, the expansion process of the food packaging bag is carried out in the gas leakage detection box, so that the food packaging bag is not easy to observe. We have therefore developed an improved gas leak detection device for packaged food products.
Disclosure of Invention
The utility model aims to provide a: the food crushing detection device aims at solving the problems that food is easy to crush and detection results are difficult to observe in the detection process at present.
In order to achieve the purpose of the invention, the utility model provides the following technical scheme:
a gas leakage detecting device for packaged food to improve the above problems.
The present application is specifically such that:
the conveying belt comprises a conveying belt, the both sides of conveyer belt all are equipped with the limiting plate, one of them the limiting plate is kept away from one side of conveyer belt and is fixed and be equipped with a motor, the pivot of a motor passes the limiting plate and is connected, two with the driving roller transmission of conveyer belt fixed being equipped with the pick-up plate that is located the conveyer belt top between the limiting plate, the front end and the rear end of pick-up plate all are equipped with the inclined plane, the top of pick-up plate is equipped with detection module, detection module includes drive mechanism and detection mechanism.
As the preferred technical scheme of this application, drive mechanism is including two backup pads of difference fixed connection in two limiting plate tops, one of them the backup pad is kept away from one side of pick-up plate and is fixed and be equipped with No. two motors, the pivot of No. two motors passes the backup pad and fixes being equipped with the transfer line, the tip of transfer line is equipped with detection mechanism.
As the preferred technical scheme of this application, detection mechanism is including pumping mechanism and determine module, pumping mechanism includes the outer capstan of fixed connection in the transfer line tip, the outer capstan is kept away from the middle part of transfer line one side and has been seted up the circular slot, the outer capstan rotates through the circular slot and is equipped with the inner capstan, one side interlude of inner capstan is equipped with L shape gas-supply pipe, the one end intercommunication that the outer capstan was kept away from to L shape gas-supply pipe is equipped with the air pump, a plurality of spout has been seted up to the circumference side of outer capstan, the air vent with the circular slot intercommunication is seted up to the inside of spout, the inside of spout is equipped with the spring, the one end that the inner capstan was kept away from to the spring is equipped with the piston tube, determine module is located the tip of piston tube.
As the preferred technical scheme of this application, the determine module includes fixed connection in the sealed cowling of piston tube end portion, piston tube and sealed cowling intercommunication, there is the connecting plate, two all through torsional spring swing joint in the inside both sides of sealed cowling rotate between the connecting plate and be equipped with the roll roller that is located the connecting plate tip, one side of sealed cowling is equipped with the warning structure.
As the preferred technical scheme of this application, remind the structure including being fixed in the battery of seal cover one side, the inside of seal cover is equipped with a plurality of spring assembly, spring assembly includes the guide ring and two electrically conductive long springs that are located the guide ring inside, two electrically conductive long spring and seal cover are close to bleed mechanism one side parallel arrangement, two electrically conductive long spring forms the plane and the seal cover are close to bleed mechanism one side perpendicular setting, keep away from bleed mechanism one side electrically conductive long spring and guide ring fixed connection, the fixed warning lamp that is equipped with of opposite side of seal cover.
As the preferred technical scheme of this application, the length of piston pipe is greater than the degree of depth of spout, the bore of air vent is less than the bore of piston pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
in the scheme of the application:
1. through the arranged detection mechanism, the detection assembly moves circularly around the air exhaust mechanism to cover the food for detection, so that the detection is realized in the conveying process, the food does not need to be moved, and the problem that the food is easy to crush in the prior art is solved;
2. through the detection assembly who sets up, through the airtight food package bag can the expanded principle at low pressure environment, two contacts of expanded wrapping bag extrusion make between two circular telegrams, and form the return circuit between warning lamp and the battery, make the warning lamp bright, realized that it is difficult for observing the testing result that changes in, solved the difficult problem of observing of testing result among the prior art.
Description of the drawings:
FIG. 1 is a schematic view of the structure of a gas leakage detecting device for packaging food provided by the present application;
FIG. 2 is a schematic circuit diagram of an electrically conductive long spring in the gas leakage detecting device for packaging food provided by the present application;
FIG. 3 is a schematic side view of a detection mechanism in the air leakage detection device for packaged food provided by the present application;
fig. 4 is a schematic front sectional view of a detection mechanism in the air leakage detection device for packaged food provided by the present application;
FIG. 5 is a schematic view of a detection assembly of the air leakage detection device for packaged food provided by the present application;
fig. 6 is a schematic view of a structure of a guide ring in the air leakage detecting device for packaged food provided by the present application.
The following are marked in the figure: 1. a conveyor belt; 2. a limiting plate; 3. a first motor; 4. a support plate; 5. a second motor; 6. a detection mechanism; 61. an air extraction mechanism; 611. an outer turntable; 612. an inner rotating disc; 613. an L-shaped gas delivery pipe; 614. a chute; 615. a vent hole; 616. a spring; 617. a piston tube; 62. a detection component; 621. a sealing cover; 622. a connecting plate; 623. a rolling roller; 624. a storage battery; 625. a conductive long spring; 626. a guide ring; 627. a warning light; 7. an air pump; 8. detecting a plate; 9. and a transmission rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them.
Thus, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and the features and technical solutions in the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper" and "lower" indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship that the product of the present invention is usually placed when in use, or the orientation or position relationship that a person skilled in the art would conventionally understand, and such terms are only used for convenience of description and simplification of the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, 2, 3, 4, 5 and 6, the present embodiment provides a gas leakage detecting device for packaged food, which includes a conveyor belt 1, two sides of the conveyor belt 1 are provided with a limiting plate 2, one side that conveyer belt 1 was kept away from to one of them limiting plate 2 is fixed and is equipped with motor 3, motor 3's pivot is passed limiting plate 2 and is connected with the driving roller transmission of conveyer belt 1, the fixed pick-up plate 8 that is located conveyer belt 1 top that is equipped with between two limiting plates 2, the front end and the rear end of pick-up plate 8 all are equipped with the inclined plane, the top of pick-up plate 8 is equipped with detection module, detection module includes drive mechanism and detection mechanism 6, food after the packing finishes is placed on conveyer belt 1, motor 3 drives the operation of conveyer belt 1, detection module moves the food after with the packing to pick-up plate 8, then detect the food package bag.
As a preferred embodiment, on the basis of the above manner, further, the transmission mechanism includes two supporting plates 4 respectively fixedly connected to the tops of the two limiting plates 2, one side of one supporting plate 4, which is away from the detection plate 8, is fixedly provided with a second motor 5, a rotating shaft of the second motor 5 penetrates through the supporting plate 4 and is fixedly provided with a transmission rod 9, the end of the transmission rod 9 is provided with a detection mechanism 6, and the second motor 5 drives the detection mechanism 6 to rotate, so that the detection mechanism 6 uninterruptedly detects the food packaging bag.
As a preferred embodiment, based on the above-mentioned manner, further, the detecting mechanism 6 includes an air extracting mechanism 61 and a detecting assembly 62, the air extracting mechanism 61 includes an outer rotating disc 611 fixedly connected to the end portion of the transmission rod 9, a circular groove is formed in the middle portion of the side of the outer rotating disc 611 far away from the transmission rod 9, the outer rotating disc 611 is rotatably provided with an inner rotating disc 612 through the circular groove, one side of the inner rotating disc 612 is inserted with an L-shaped air pipe 613, an air pump 7 is communicated with one end of the L-shaped air pipe 613 far away from the outer rotating disc 611, a plurality of sliding grooves 614 are formed in the circumferential side of the outer rotating disc 611, vent holes 615 communicated with the circular groove are formed in the sliding grooves 614, a spring 616 is formed in the sliding grooves 614, a piston tube 617 is formed in one end of the spring 616 far away from the inner rotating disc 612, the detecting assembly 62 is located at the end portion of the piston tube 617, the air extracting mechanism 61 drives the detecting assembly 62 to perform a circular motion through the piston tube 617, when the food moves to a position close to the detecting plate 8, the detection assembly 62 close to the detection plate 8 pushes food to the top end of the detection plate 8, the piston tube 617 moves towards the inner turntable 612, the spring 616 is also compressed, so that the detection assembly 62 detects the food packaging bag, during detection, the L-shaped air delivery pipe 613 is communicated with the vent hole 615 in the direction of the sealing cover 621, and the air pump 7 pumps air to reduce the air pressure in the sealing cover 621.
As a preferred embodiment, on the basis of the above manner, further, the detecting assembly 62 includes a sealing cover 621 fixedly connected to an end portion of the piston tube 617, the piston tube 617 communicates with the sealing cover 621, two sides inside the sealing cover 621 are movably connected with connecting plates 622 through torsion springs, a rolling roller 623 located at an end portion of the connecting plate 622 is rotatably disposed between the two connecting plates 622, one side of the sealing cover 621 is provided with a reminding structure, the rolling roller 623 inside the detecting assembly 62 close to the detecting plate 8 pushes food to a top end of the detecting plate 8, the rolling roller 623 is pressed by the detecting plate 8 and rotatably received inside the sealing cover 621, the piston tube 617 moves towards the inner turntable 612, the spring 616 is also compressed, the food is also located inside the sealing cover 621, and an opening of the sealing cover 621 is pushed to be closely attached to the detecting plate 8 by an elastic force of the spring 616.
As a preferable embodiment, on the basis of the above-mentioned modes, further, the reminding structure includes a storage battery 624 fixed on one side of the sealing cover 621, a plurality of spring sets are arranged inside the sealing cover 621, each spring set includes a guide ring 626 and two long conductive springs 625 located inside the guide ring 626, the two long conductive springs 625 and the sealing cover 621 are arranged in parallel on one side close to the pumping mechanism 61, a plane formed by the two long conductive springs 625 is perpendicular to one side of the sealing cover 621 close to the pumping mechanism 61, the long conductive spring 625 on one side far from the pumping mechanism 61 is fixedly connected with the guide ring 626, a reminding lamp 627 is fixedly arranged on the other side of the sealing cover 621, the internal air pressure of the complete package is lower than the external air pressure, the package expands, the expanded package extrudes the long conductive spring 625 on one side far from the pumping mechanism 61, so that the two long conductive springs 625 are connected to be electrified, reminding and forming the return circuit between lamp 627 and the battery 624, making reminding lamp 627 bright, if the wrapping bag leaks gas, the inside atmospheric pressure of wrapping bag is balanced with outside atmospheric pressure, then can not expand, can not touch electrically conductive long spring 625, reminds consequently that lamp 627 is not bright, has realized that it is difficult to observe the testing result that changes in, has solved the difficult problem of observing of testing result among the prior art.
In a preferred embodiment, in addition to the above-mentioned manner, the length of the piston tube 617 is greater than the depth of the sliding groove 614, and the diameter of the vent hole 615 is smaller than the diameter of the piston tube 617, so as to provide a supporting point for the spring 616.
Specifically, this gas leakage detection device of packing food is when during operation/use: the packaged food is placed on the conveying belt 1, the first motor 3 drives the conveying belt 1 to run, the second motor 5 drives the air pumping mechanism 61 to rotate, the air pumping mechanism 61 drives the detection assembly 62 to do circular motion through the piston tube 617, when the food moves to a position close to the detection plate 8, the rolling roller 623 close to the inside of the detection assembly 62 of the detection plate 8 pushes the food to the top end of the detection plate 8, the rolling roller 623 is extruded and rotated by the detection plate 8 and is collected into the sealing cover 621, the piston tube 617 moves towards the direction of the inner turntable 612, the spring 616 is compressed, the food is also positioned in the sealing cover 621, the elastic force of the spring 616 pushes the opening of the sealing cover 621 to cling to the detection plate 8, at the moment, the L-shaped air pipe 613 is communicated with the vent hole 615 in the direction of the sealing cover 621, the air pump 7 pumps air to reduce the air pressure inside the sealing cover 621, and the air pressure inside the complete packaging bag is lower than the external air pressure, the wrapping bag inflation, the electrically conductive long spring 625 of air exhaust mechanism 61 one side is kept away from in the inflation wrapping bag extrusion, make two electrically conductive long springs 625 circular telegram after contacting, form the return circuit between warning lamp 627 and the battery 624, make warning lamp 627 bright, if the wrapping bag gas leakage, the inside atmospheric pressure of wrapping bag is balanced with outside atmospheric pressure, then can not expand, can not touch electrically conductive long spring 625, consequently, warning lamp 627 is not bright, realized that change in is surveyed the testing result, the difficult problem of observing of testing result among the prior art has been solved, after the detection finishes, detecting element 62 continues to rotate, connecting plate 622 can rotate under the effect of torsional spring and stretch out outside the sealed cowling 621, promote the wrapping bag and move on conveyer belt 1 from pick-up plate 8 and continue to carry, the staff takes off the damaged food of packing from conveyer belt 1.
The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement may be made to the present invention; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.

Claims (6)

1. The utility model provides a gas leakage detection device of packaged food, includes conveyer belt (1), its characterized in that, the both sides of conveyer belt (1) all are equipped with limiting plate (2), one of them limiting plate (2) keep away from one side of conveyer belt (1) and fix and be equipped with motor (3), the pivot of motor (3) passes limiting plate (2) and is connected, two with the driving roller transmission of conveyer belt (1) fixed be equipped with pick-up plate (8) that are located conveyer belt (1) top between limiting plate (2), the front end and the rear end of pick-up plate (8) all are equipped with the inclined plane, the top of pick-up plate (8) is equipped with detection module, detection module includes drive mechanism and detection mechanism (6).
2. The device for detecting the gas leakage of the packaged food as claimed in claim 1, wherein the transmission mechanism comprises two supporting plates (4) fixedly connected to the tops of the two limiting plates (2), respectively, one side of one of the supporting plates (4) far away from the detection plate (8) is fixedly provided with a second motor (5), a rotating shaft of the second motor (5) penetrates through the supporting plate (4) to be fixedly provided with a transmission rod (9), and the end part of the transmission rod (9) is provided with the detection mechanism (6).
3. The device for detecting the air leakage of the packaged food as claimed in claim 2, wherein the detection mechanism (6) comprises an air pumping mechanism (61) and a detection assembly (62), the air pumping mechanism (61) comprises an outer rotating disc (611) fixedly connected to the end of the transmission rod (9), a circular groove is formed in the middle of one side of the outer rotating disc (611) far away from the transmission rod (9), an inner rotating disc (612) is rotatably arranged on the outer rotating disc (611) through the circular groove, an L-shaped air pipe (613) is inserted into one side of the inner rotating disc (612), an air pump (7) is communicated with one end of the L-shaped air pipe (613) far away from the outer rotating disc (611), a plurality of sliding grooves (614) are formed in the circumferential side of the outer rotating disc (611), vent holes (615) communicated with the circular groove are formed in the sliding grooves (614), a spring (616) is arranged in the sliding grooves (614), one end of the spring (616), which is far away from the inner rotary disc (612), is provided with a piston tube (617), and the detection assembly (62) is positioned at the end part of the piston tube (617).
4. The gas leakage detection device of the packaged food as claimed in claim 3, wherein the detection assembly (62) comprises a sealing cover (621) fixedly connected to the end of a piston tube (617), the piston tube (617) is communicated with the sealing cover (621), two sides inside the sealing cover (621) are movably connected with connecting plates (622) through torsion springs, a rolling roller (623) located at the end of the connecting plate (622) is rotatably arranged between the two connecting plates (622), and a reminding structure is arranged on one side of the sealing cover (621).
5. The gas leakage detecting device for packaged food as claimed in claim 4, wherein the reminding structure comprises a storage battery (624) fixed on one side of a sealing cover (621), a plurality of spring sets are arranged inside the sealing cover (621), each spring set comprises a guide ring (626) and two long conductive springs (625) positioned inside the guide ring (626), the two long conductive springs (625) and the sealing cover (621) are arranged in parallel on one side close to the pumping mechanism (61), a plane formed by the two long conductive springs (625) is perpendicular to one side of the sealing cover (621) close to the pumping mechanism (61), the long conductive spring (625) far away from one side of the pumping mechanism (61) is fixedly connected with the guide ring (626), and a reminding lamp (627) is fixedly arranged on the other side of the sealing cover (621).
6. The apparatus for detecting the leakage of a packaged food according to claim 3, wherein the piston tube (617) has a length greater than the depth of the chute (614), and the vent hole (615) has a diameter smaller than the diameter of the piston tube (617).
CN202120706775.6U 2021-04-07 2021-04-07 Air leakage detection device for packaged food Expired - Fee Related CN214702624U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120706775.6U CN214702624U (en) 2021-04-07 2021-04-07 Air leakage detection device for packaged food

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120706775.6U CN214702624U (en) 2021-04-07 2021-04-07 Air leakage detection device for packaged food

Publications (1)

Publication Number Publication Date
CN214702624U true CN214702624U (en) 2021-11-12

Family

ID=78529827

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120706775.6U Expired - Fee Related CN214702624U (en) 2021-04-07 2021-04-07 Air leakage detection device for packaged food

Country Status (1)

Country Link
CN (1) CN214702624U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114441114A (en) * 2022-04-07 2022-05-06 山东昆嵛电缆有限公司 Cable sheath sealing performance detection device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114441114A (en) * 2022-04-07 2022-05-06 山东昆嵛电缆有限公司 Cable sheath sealing performance detection device and method
CN114441114B (en) * 2022-04-07 2022-06-21 山东昆嵛电缆有限公司 Cable sheath sealing performance detection device and method

Similar Documents

Publication Publication Date Title
CN214702624U (en) Air leakage detection device for packaged food
CN1975359A (en) Vacuum soft packing food air leakaging detection flow-line
CN110053813A (en) A kind of packaging system and its control method
CN220277649U (en) Moon cake wrapping bag seals leakproofness detection device
CN111361810B (en) Food packaging equipment
CN113306800A (en) Thermal contraction film packagine machine with micropore detects structure
CN219200774U (en) Air leakage detection equipment for bagged products
CN210464842U (en) Food safety detection device
CN115465501A (en) Packaging device for quick-frozen food and packaging method thereof
CN205958211U (en) Harmless test equipment of vacuum flexible packaging bag leakproofness
CN210176419U (en) Bottle cap pressing device
CN112444359A (en) Food package sealing performance detection device
CN218481211U (en) Infusion bag leak hunting device
CN218251558U (en) Cigarette package detection device
CN2539021Y (en) Leakage-preventing flange sealer
CN214865393U (en) Seasoning outer packaging bag detecting and eliminating system
CN212333164U (en) Connecting device for entering and exiting negative pressure environment
CN114873001A (en) Food package's quick check out test set
CN213658166U (en) Low temperature meat products aseptic package gas leakage detection device
CN111924203B (en) Medicine packagine machine
CN108146731A (en) It is a kind of that the envelope method and apparatus for carrying out outer packing is transported to blood bag
CN115806086A (en) Outer bag packagine machine behind waxy maize vacuum packaging
CN104111148B (en) Semi-automatic air tightness detection apparatus
CN209225531U (en) A kind of packed packing machine of the prepared slices of Chinese crude drugs
CN208559864U (en) A kind of pigment production automatic vaccum packager

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20211112