baber/WOPTO huggingface dataset:
Patent KR-102359346-B1 (KR)
Title: linked type power transmission apparatus with reinforced durability for tracking sun light
Inventor: JUNG YANG JUN
IPC: F16H7/06
Filed: 2021-08-10
Granted: 2022-02-08
Abstract: The present invention relates to an interlocked power transmission apparatus for tracking sunlight with enhanced durability. According to the present invention, the interlocked power transmission apparatus for tracking the sunlight with enhanced durability includes: a plurality of support columns; a plurality of interlocking rotation shafts; a consistent shaft; a collective rotation electric-driving unit; an interlocking rotation electric-driving unit; and a wire separation guide.
Patent KR-102446563-B1 (KR)
Title: flame retardant gasket containing polyamide
Inventor: JANG YU SUNG
IPC: C09K21/06
Filed: 2021-08-19
Granted: 2022-09-23
Abstract: The present invention relates to a flame-retardant gasket comprising polyamide. More specifically, the present invention relates to a flame-retardant gasket that comprises polyamide and has excellent durability, restoration performance and adhesive strength, as well as excellent flame-retardant properties, wherein the flame-retardant gasket is a gasket used as a sealing material for sealing a gap between a door and a door frame of a building or a gap between window frames.
Patent KR-102449165-B1 (KR)
IPC: H04M1/02
Filed: 2021-10-15
Granted: 2022-09-29
Abstract: 다양한 실시예에 따르면, 휴대용 전자 장치에 있어서, 상기 전자 장치의 정면을 형성하는 정면 (front) 커버; 상기 전자 장치의 후면을 형성하는 후면 커버; 상기 정면 커버 및 상기 후면 커버에 의해 형성된 공간을 둘러싸고, 상기 전자 장치의 외부 주변을 따라서 배치되고, 상기 정면 커버와 상기 후면 커버로부터 분리된 부품인 베젤; 상기 베젤의 적어도 일부분에서 상기 공간으로 연장되고, 상기 정면 커버를 향하는 제1면과, 상기 후면 커버를 향하는 제2면을 포함하는 금속 구조물(structure); 상기 공간 내에 위치하고, 상기 금속 구조물과 일부 중첩되며, 상기 정면 커버를 향하는 제 1 표면 및 상기 후면 커버를 향하는 제 2 표면을 포함하는 비금속 구조물; 및 상기 비금속 구조물의 일부분을 관통하여, 상기 비금속 구조물의 상기 제1표면으로부터 상기 제2표면으로 연장되고, 상기 제 1 표면에 인접한 제 1 단부, 및 상기 제 2 표면에 인접한 제 2 단부를 포함하며, 금속 재질로 형성되고, 상기 베젤의 강도와 동일한 강도를 가지는 금속 필러(filler); 및 상기 제1단부와 전기적으로 연결을 형성하는 플렉서블 도전 구조를 포함할 수 있다.
Patent KR-102345711-B1 (KR)
Title: Control method of welding robot for forming uniform weaving bead by performing welding in precise weaving operation along welding line formed on base material
Inventor: KIM JUNG HYUN
IPC: B25J5/00
Filed: 2021-10-20
Granted: 2021-12-30
Abstract: Provided is a control method of a welding robot which performs a sophisticated weaving operation of a skilled worker and performs welding along a welding line formed at a joint of a steel pipe lying adjacently. The control method of the welding robot performing welding such that a weaving bead is formed on the welding line of a base material having a hollow cylindrical shape comprises the following steps of: receiving, by an electronic control unit, position data of the welding line sensed by a sensor; controlling, by the electronic control unit, a position and a posture of a welding tip of the welding robot according to the position data; and performing welding while the electronic control unit controls the welding robot to move the welding robot along a rotational trajectory formed along the outer periphery of the base material.
Patent KR-102442446-B1 (KR)
Title: (handling device of fallen ore for conveyor)
Inventor: YUN JAE SOO
IPC: B65G19/06
Filed: 2021-10-28
Granted: 2022-09-08
Abstract: A fallen ore handling device for a conveyor according to the present invention, which is a fallen ore handling device for a conveyor installed below and with a gap from a conveyor (1) forming an endless track so that raw materials such as iron ore and coal can be transferred to a raw material input part by rotation, comprises: a deck plate (10) consisting of two sidewalls (11) and a bottom plate (12); guide rails (20) installed on the two sidewalls (11) of the deck plate (10), respectively; a plurality of rollers (30) traveling in the longitudinal direction of the deck plate (10); a pair of side frames (40) to which the roller (30) is fixed to be able to rotate; a plurality of connecting frames (50) for connecting the side frames (40) to each other; a plurality of rotation shafts (60) coupled to the side frames (40) to be able to rotate at the same time; a scraper (70) brought into contact with the bottom plate (12) or spaced apart from the bottom plate (12) by the rotation of the rotation shaft (60); a rotation shaft rotating means (80) for rotating the rotation shaft (60) so that the scraper (70) can be in contact with the bottom plate (12) or can be spaced apart from the bottom plate (12); a piston (90) for reciprocating a side frame hinged to the connecting frames (50); and a cylinder (100) for reciprocating a side frame, which introduces and withdraws the piston (90) for reciprocating a side frame to move the side frames (40) forward and backward, thereby moving fallen ore fallen on an upper part of the deck plate (10) to the raw material input part using the scraper (70).
Patent KR-102553947-B1 (KR)
IPC: B63H5/16
Filed: 2021-10-29
Granted: 2023-07-11
Abstract: 본 발명은 선박의 추진장치에 폐어망이나 폐로프와 같은 해양폐기물이 감길 경우, 해양폐기물을 원할하게 절단함으로써 해양폐기물의 감김으로 인한 선박 운항의 저해요소를 사전에 제거하여 안전한 운항을 할 수 있고, 추진기의 회전시 과부하로 인한 고장 발생을 방지할 수 있는 선박용 그물 및 로프 커팅장치에 관한 것으로, 본 발명에 따른 선박용 그물 및 로프 커팅장치는, 선박의 선미 하부에 설치되는 스턴튜브의 외측으로 연장되는 프로펠러샤프트와, 상기 프로펠러샤프트의 후단부에 설치되는 프로펠러를 포함하는 선박의 추진장치에 설치되어 추진장치에 감기는 해양폐기물을 커팅하는 선박용 그물 및 로프 커팅장치에 있어서, 상기 프로펠러샤프트의 외면에 결합되어 회전하는 원형 링 형태로 된 허브와, 상기 허브의 반경방향으로 연장되게 형성되며 외주연부에 원주방향을 따라 톱니 형태의 칼날이 형성된 제1회전블레이드와, 상기 허브에 상기 제1회전블레이드와 나란하게 형성되며 외주연부에 칼날이 형성된 제2회전블레이드를 포함하는 회전커터부재; 및, 상기 스턴튜브에 고정되게 설치되며, 후단부에 상기 회전커터부재에 근접하게 설치되어 회전커터부재와 연동하여 해양폐기물을 절단하도록 예리한 칼날 형태로 절단부가 형성되어 있는 고정커터부재;를 포함한다.
Patent KR-102375547-B1 (KR)
Inventor: KIM JONG MOK
IPC: G06N3/04
Filed: 2021-11-02
Granted: 2022-03-17
Abstract: The present invention relates to a device for semi-supervised learning artificial intelligence and a driving method thereof. According to an embodiment of the present invention, the device for semi-supervised learning artificial intelligence comprises: a communication interface unit for receiving a plurality of images related to an arbitrary field for learning related to an object or an event of an arbitrary field; and a control unit that learns a second characteristic information extracted using an obtained image and provides a learning result to a first network unit to receive learning guidance after dividing a plurality of images in a second network unit that is instructed to learn, based on virtual label information generated using first characteristic information extracted from each of the plurality of images in the first network unit that guides learning.
Patent KR-102554270-B1 (KR)
IPC: C25D13/02
Filed: 2021-11-15
Granted: 2023-07-10
Abstract: 본 발명은 전기 영동 증착(Electrophoretic deposition) 공정에서 사용되는 용매의 종류를 제어하여 기판 상에 나노입자 3차원 구조체를 증착하는 방법에 관한 것으로, 극성 용매 및 비극성 용매를 포함하는 혼합 용매에 콜로이드 FeP 나노입자를 분산시키는 단계, 및 콜로이드 FeP 나노입자 분산액에 다공성 기판이 부착된 한 쌍의 전극을 투입한 후 전압을 인가하여 상기 기판의 표면에 콜로이드 FeP 나노입자를 증착시키는 단계를 포함한다.
Patent KR-102370220-B1 (KR)
Title: Arc Detecting Device For Detecting Serial Arc In Photovoltaic Junction Box
Inventor: CHANG KEUNG GUN
IPC: G01R31/12
Filed: 2021-11-25
Granted: 2022-03-11
Abstract: Disclosed is an arc detection device for detecting a serial arc in a photovoltaic (PV) junction box. According to the present invention, the arc detection device comprises: a current sensor connected to any one of lines formed by an input terminal, a fuse, a diode, and an output terminal to detect a current flowing in the line; a temperature sensor connected to at least one of a connection point of an input terminal connected to a PV string, a connection point of an input terminal connected to the fuse, and a connection point to which the fuse and the diode are connected and detecting the temperature of the corresponding part; and a determination unit determining whether a serial arc has occurred at the connection point on the line based on values detected by the current sensor and the temperature sensor. In addition, the method comprises the following steps by the determination unit of the arc detection device: determining whether an absolute value of an instantaneous current change rate is greater than a reference value when a current detected by the current sensor instantaneously decreases; determining whether the temperature detected by the temperature sensor immediately rises when the absolute value of the current reduction is greater than the reference value; and when the temperature rises immediately as the absolute value of the current reduction is greater than the reference value, determining that a series arc has occurred at the corresponding connection. Accordingly, the arc detection device can perform detection in a simple way, thereby providing a reliable detection result while being simply configured.
Patent KR-102419423-B1 (KR)
Title: Companion animal adoption matching system using genetic information
Inventor: KIM HEE TAE
IPC: G06Q50/10
Filed: 2021-11-25
Granted: 2022-07-11
Abstract: The present invention relates to a companion animal adoption matching system using genetic information. The companion animal adoption matching system using genetic information, includes: a gene extraction part extracting genetic information of a companion animal; a breed extraction part extracting breed information about the proportion of the breed of the companion animal by using the genetic information; a companion animal information generation part analyzing the breed information to generate companion animal information about characteristics in accordance with the breed of the companion animal; a user information collection part collecting user information including at least one of a life pattern, personality information and preference information of the user; and a matching part calculating suitability through a comparison between the user information and the companion animal information and matching a companion animal with the highest suitability. Therefore, the present invention is capable of lowering the likelihood of dissolution of adoption by matching a companion animal suitable for the user.
Patent KR-102398619-B1 (KR)
Inventor: YUN GI YEOL
IPC: B01D47/06
Filed: 2021-12-22
Granted: 2022-05-17
Abstract: The present invention relates to an IoT-based non-degradable exhaust gas treatment and carbon-neutral high efficiency system using seawater, which includes: a first scrubber removing carbon dioxide and odor from exhaust gas flowing in from the outside; one or more second scrubbers arranged to be adjacent to the first scrubber and removing carbon dioxide and odor from the exhaust gas flowing in from the first scrubber; and a third scrubber arranged to be adjacent to the second scrubber, removing carbon dioxide and odor from the exhaust gas flowing in from the second scrubber, and discharging purified gas to the outside, wherein bottoms of the first to third scrubbers communicate with each other. Therefore, carbon dioxide, fine dust, and odors in exhaust gas generated from a thermal power plant are effectively removed.
Patent KR-102439036-B1 (KR)
Title: Two-row radish harvester equipped with track adjustment device
Inventor: YI LEE JUNG
IPC: B62D55/084
Filed: 2021-12-22
Granted: 2022-09-01
Abstract: The present invention relates to a track adjustment device for a two-row radish harvester, which can move at least one of a right wheel or a left wheel in a width direction in response to the width of a ridge and the planting positions of radishes so that the radishes in the ridge where the radishes are planted in two rows can be harvested, to harvest the radishes planted in the two rows while moving smoothly regardless of the width of the ridge. The track adjustment device is provided in the radish harvester comprising: an excavating and vinyl cutting device which excavates a ridge and cuts the vinyl of the ridge; a drawing and conveying device which picks up radishes from the ridge and conveys the same to a loading box provided in rear thereof; and a traveling device provided below a main frame towed by an agricultural vehicle. The track adjustment device comprises: a traveling device frame connected to the main frame; a plurality of movable frames connected to the right and left wheels of the traveling device and slidably inserted into the traveling device frame; and a plurality of track control cylinders rotatably installed on the traveling device frame to move the right or left wheel in the width direction.
Patent KR-102398770-B1 (KR)
Inventor: LEE HYEON SEUNG
IPC: G06Q30/08
Filed: 2021-12-24
Granted: 2022-05-17
Abstract: Disclosed are a device for providing a platform service for the impaired and a method for providing a platform service for the impaired performed by the same. According to an embodiment of the present invention, the method therefor comprises: a step of identifying class information of a user input to a platform service interface provided by a device for providing platform service for the impaired; a step of extracting product or service purchase details of other users having the identified class information and class information corresponding to a degree of similarity within a preset range from purchase detail information of the pre-stored impaired; a step of generating a self-class for a user, based on the extracted purchase details; a step of generating a supply target group including at least one of a product and service for the user based on the self-class; a step of determining a product or service available for purchase by the user, based on the identified class information for the user, in the supply target group; a step of creating a recommendation list including the determined product or service; and a step of providing the created recommendation list to a terminal of the user through the platform service interface. According to an embodiment of the present invention, a detailed level of a user can be independently determined among ranks of a person with the impaired based on purchase details of a product and/or platform providing service for a person with the impaired. Based on a self-determined detailed level, the present invention has an effect of providing a user with a highly customized product and/or service.
Patent KR-102480844-B1 (KR)
IPC: A61C17/22
Filed: 2021-12-27
Granted: 2022-12-23
Abstract: 본 발명의 일 실시예에 따른 엘이디를 구비한 에어 치아세정기는 내부에 수용공간을 갖는 본체; 상기 본체 상부에 마련되고, 에어압으로 동작되는 회전 브러쉬가 구비되고 상기 회전 브러쉬 내측에 에어 분사를 위한 복수의 에어분사공이 형성되는 팁; 상기 본체 또는 팁에 구비되며, 엘이디 광을 조사하는 엘이디; 상기 엘이디를 구동하도록 제어하는 제어부; 상기 엘이디에 전원을 공급하는 전원부;를 포함한다.
Patent KR-102485675-B1 (KR)
Inventor: SON CHANG HUI
IPC: F03D7/06
Filed: 2021-12-31
Granted: 2023-01-05
Abstract: The purpose of the present invention is to provide an efficiency improvement device for a power generation turbine. The efficiency improvement device comprises: a turbine device (110) consisting of a rotation propulsion member (114) coupled to a vertically disposed rotation shaft (112); an upper support (122) and a lower support (124) coupled to the rotation shaft (112) of the turbine device (110) by a hinge; a first rotation guider (130) coupled to one end of the upper support body (122) and the lower support body (124) and having an outer rotation guide curved surface (132) and an inner rotation guide curved surface (134); and a second rotation guider (140) coupled to the other end of the upper support body (122) and the lower support body (124) and having a flow guide curved surface (142). The effect of the present invention is to properly and efficiently use the tailwind from the rotation of the plurality of rotation propulsion members mounted on the vertical rotation shaft of the power generation turbine, and in addition, to efficiently use the headwind to change into the tailwind even when the headwind acts, thereby increasing the power generation efficiency of a power generator.
Patent KR-102372442-B1 (KR)
IPC: H01L27/146
Filed: 2014-03-14
Granted: 2022-03-10
Abstract: 본 개시는, 고체 촬상 소자의 감도 저하를 억제할 수 있도록 하는 고체 촬상 소자, 촬상 장치, 전자 장치, 및 제조 방법에 관한다. 본 개시의 제1의 측면인 고체 촬상 소자는, 입사광에 응하여 전기 신호를 발생하는 센서부와, 상기 센서부를 덮는 컬러 필터와, 상기 컬러 필터를 통하여 상기 센서부에 상기 입사광을 집광시키기 위한, 소정의 렌즈재에 의한 적층막으로 성형된 렌즈를 구비하고, 상기 렌즈는 상기 컬러 필터의 단차를 해소하기 위한 평탄화층을 마련하는 일 없이 상기 컬러 필터의 상층에 형성되어 있다. 본 개시는, 고체 촬상 소자외, 촬상 장치나 촬상부를 갖는 전자 장치에 적용할 수 있다.
Patent KR-102426408-B1 (KR)
Title: 휴대용 음향기기
IPC: H04R1/10
Filed: 2018-08-30
Granted: 2022-07-28
Abstract: 일측에 돌출되고 일단부가 개방된 음향통로를 포함하는 하우징; 상기 음향통로를 제1 음향통로와 제2 음향통로 양분하는 격벽; 상기 제1 음향통로를 통해 소리를 출력하는 음향출력부; 상기 제2 음향통로를 통해 소리를 수집하는 내측 마이크; 및 상기 하우징 내부에 실장되며상기 음향출력부를 제어하여 소리를 출력하고 상기 내측 마이크로부터 수집된 소리를 처리하는 제어부를 포함하는 휴대용 음향기기는 사용자의 몸을 통해 입력되는 소리를 수집하는 내측 마이크를 더 구비하여 외부잡음을 보다 효과적으로 제거할 수 있다.
Patent KR-102475428-B1 (KR)
Title: 나사 길이 판정 시스템, 나사 조임 시스템 및 기록 매체
IPC: B23P19/06
Filed: 2019-09-25
Granted: 2022-12-07
Abstract: 나사의 길이를 조기에 판정하는 것이 가능한 나사 길이 판정 시스템을 실현한다. PLC(10)는, 나사를 조이기 위한 드라이버가, 초기 위치로부터, 나사가 워크에 접촉하여 나사맞춤시킬 때까지의, 드라이버의 축방향에서의 이동 속도를 계측하고, 초기 위치로부터의 이동 개시부터, 이동 속도가 변화할 때까지의 시간에 기초하여, 나사의 길이를 판정하는 판정부를 구비한다.
Patent KR-102529040-B1 (KR)
Title: 열연 강판 및 그 제조 방법
IPC: C22C38/42
Filed: 2019-10-21
Granted: 2023-05-10
Abstract: 이 열연 강판은, 소정의 화학 조성을 갖고, 두께를 t로 하였을 때, 표면으로부터 t/4의 위치에 있어서의 금속 조직이, 템퍼링 마르텐사이트 및 하부 베이나이트 중 어느 한쪽 혹은 양쪽을, 체적률의 합계로 90％ 이상 함유하고, 인장 강도가 980㎫ 이상이며, 상기 표면에 있어서의 평균 Ni 농도가 7.0％ 이상이다.
Patent KR-102480510-B1 (KR)
IPC: G03B5/02
Filed: 2022-01-11
Granted: 2022-12-23
Abstract: 본 실시예는 하우징; 보빈; 제1코일; 제1마그네트; 베이스; 제2코일을 포함하는 기판; 제1센서; 제2마그네트; 및 제2센서를 포함하고, 상기 하우징은 제1측부와, 제2측부와, 상기 제1측부와 상기 제2측부 사이에 배치되는 제1코너부를 포함하고, 상기 제1마그네트는 상기 하우징의 제1측부에 배치되는 제1마그네트 유닛과, 상기 하우징의 제2측부에 배치되는 제2마그네트 유닛을 포함하고, 상기 제2센서는 상기 하우징의 제1측부와 상기 하우징의 제2측부 사이에 배치되는 제1코너부에 배치되고, 상기 제1마그네트 유닛은 상기 제1코너부 측에 형성되는 제1홈을 포함하고, 상기 제2마그네트 유닛은 상기 제1코너부 측에 형성되는 제2홈을 포함하는 렌즈 구동 장치에 관한 것이다.
Patent KR-102621801-B1 (KR)
IPC: B65D45/18
Filed: 2022-01-12
Granted: 2024-01-09
Abstract: 본 발명은, 덮개에 수 잠금부를 조립할 수 있는 상자에 관한 것이다. 특히 본 발명은, 덮개에 조립된 수 잠금부를 누르면 상자몸체의 암 잠금부로부터 탄성 회복되어 위로 올라가 잠금을 자동 해제하는, 상자에 관한 것이다.
Patent KR-102542690-B1 (KR)
IPC: B60W30/14
Filed: 2022-01-13
Granted: 2023-06-14
Abstract: 자동 운전 차량 (10) 의 조작 장치는, 자동 운전 가능한 상기 자동 운전 차량의 자동 운전 모드에 의한 주행을 개시시키는 발진 버튼 (60a) 및 자동 운전 모드 중에 상기 자동 운전 차량을 감속시키기 위한 감속 버튼 (60b) 중 적어도 일방, 및 상기 자동 운전 차량의 외부를 향한 알림을 실시하기 위한 알림 버튼 (62) 을, 동일 화면 상에 표시하도록 구성된 터치 패널 (38) 을 구비한다.
Patent KR-102394928-B1 (KR)
Inventor: UPADHYA KARTHIK
IPC: H04K3/00
Filed: 2022-01-19
Granted: 2022-05-04
Abstract: This document discloses a solution for performing anti-jamming procedures. According to an aspect, a method for a terminal device comprises: receiving a first reference signal allocation from an access node, wherein the first reference signal is unique to the terminal device in a cell managed by the access node; receiving a second reference signal allocation from the access node, wherein the second reference signal is shared with at least one other terminal device in the cell; causing transmission of payload data together with the first reference signal according to a regular transmission pattern; and breaking the regular transmission pattern by transmitting dummy data together with the second reference signal in a time-frequency resource shared with the at least one other terminal device.
Patent KR-102414059-B1 (KR)
IPC: G06F3/0354
Filed: 2022-01-24
Granted: 2022-06-29
Abstract: [과제]  
전자 펜 기능을 실현하는 전자 펜 본체부의 펜 끝측의 부분을 세형화하더라도, 사용에 의한 손상이나 변형을 생기지 않게 한다.  
[해결 수단]  
통 모양의 외부 케이스(2) 내에, 전자 펜 본체부(3)가 수납되어 전자 펜(필기구)(1)이 구성된다. 전자 펜 본체부(3)는 축심 방향의 일단이 펜 끝이 되는 심체(34)를 구비한다. 당해 심체(34)는 통 모양의 내부 케이스(33)에 수납되지만, 심체(34)의 펜 끝은 내부 케이스(33)의 단부의 개구부(33a)로부터 돌출시킨 상태로 수납된다. 사용시에는, 심체(34)의 펜 끝과, 내부 케이스(33)의 펜 끝측부(33b, 33c)가, 외부 케이스(2)의 개구(2b)로부터 돌출되지만, 심체(34)는 내부 케이스(33)에 의해 보호된다.
Patent KR-102609908-B1 (KR)
Title: 자동자 도어트림을 도어에 고정하기 위한 훼스너의 픽업용 자동정렬 공급장치
IPC: B62D65/02
Filed: 2022-02-21
Granted: 2023-12-05
Abstract: 본 발명은 자동자 도어트림을 도어에 고정하기 위한 훼스너의 픽업용 자동정렬 공급장치에 관한 것으로서, 보다 상세하게는 도어트림 등 다양한 자동차 내장부품을 차체판넬에 고정하기 위해 사용되는 훼스너를 공급하기 위한 장치로서, 대량의 훼스너를 공급하기 위한 장치를, 기존과 달리 설치공간의 제약의 받지 않도록 협소한 공간에서도 설치가 가능토록 구성하여, 훼스너 작업공간을 효율적으로 사용하여 작업시간을 단축시킬 수 있도록 하는 자동자 도어트림을 도어에 고정하기 위한 훼스너의 픽업용 자동정렬 공급장치에 관한 것이다.
Patent KR-102542698-B1 (KR)
Inventor: LEE IN HYUN
IPC: A61P3/00
Filed: 2022-04-05
Granted: 2023-06-14
Abstract: 본 발명은 신규한 벤조사이오펜 유도체 및 BET 억제제로서의 용도에 관한 것으로, 보다 상세하게는 BET (Bromodomain Extra-Terminal) 단백질에 대하여 저해 활성을 갖는 신규한 하기 화학식 1의 벤조사이오펜 유도체 화합물 및 이를 포함하는 BET 단백질 관련 질환의 예방 또는 치료용 약학적 조성물에 관한 것이다.
Patent KR-102488622-B1 (KR)
Title: Mortar composite with wastesand foundry sand
Inventor: BAE JOUNG KWON
IPC: C04B24/38
Filed: 2022-04-29
Granted: 2023-01-13
Abstract: The present invention relates to a mortar composition including waste foundry sand. The present invention comprises: 10-30 wt% of Portland cement; 2-4 wt% of blast furnace slag fine powder; 1-3 wt% of fly ash; 55-82.8 wt% of sand; 1-5 wt% of fine powder; 0.5-3.5 wt% of waste foundry sand; 0.1-0.9 wt% of an inorganic thickener; 0.05-0.15 wt% of an air-entraining agent; and 0.1-0.9 wt% of fine aggregate. Therefore, the present invention can help environmental protection by recycling the waste foundry sand, which is industrial waste, relatively recover a shortage of mortar consumed as a construction material while reducing the burden for disposal of the waste foundry sand, which is industrial waste, have excellent physical and chemical performance by mixing the waste foundry sand with mortar, and enhance thermal insulation, strength, and noise-reduction effects by replacing a portion of sand, used as aggregate in a prior art, with the waste foundry sand and being mixed with cement and additives.
Patent KR-102474718-B1 (KR)
Title: Pump having protecting device of mechanical seal
Inventor: KIM DAE HOON
IPC: F04D13/06
Filed: 2022-05-10
Granted: 2022-12-07
Abstract: The present invention relates to a pump and, more specifically, to a pump having a mechanical seal protecting device that can extend a lifetime of a mechanical seal by preventing foreign substances in a fluid, wherein the foreign substances have flowed into an upper part of a casing outside an impeller from a water pump located underwater, from flowing into the mechanical seal. According to the present invention, the pump having a mechanical seal protecting device comprises: an electric motor which generates a rotation force by receiving external power, is provided with a stator and a rotor in a housing, and is provided with a rotation shaft fixed by penetrating the center of the rotor; an impeller which is mounted onto a fore-end of the rotation shaft; a casing which is embedded with the impeller, is formed with an inlet at a central part of a lower side, and is formed with an outlet at a side part; a chamber case which forms a chamber, which is a predetermined space between the housing and the casing; a mechanical seal which is mounted on the rotation shaft located inside the chamber; a wear plate which has one side closely adhering to a bottom surface of an upper side frame of the casing and another end closely adhering to an outer surface of an upper end boss part of the impeller to divide a space between the bottom surface of the upper side frame of the casing and the upper surface of the impeller into an upper side space and a lower side surface, and blocks the fluid that has flowed into the lower side space from flowing into the upper side space; and a vane member which is mounted to the rotation shaft located at the upper side space to rotate with the rotation shaft together, and rotates the fluid flowing into the upper side space and generates a centrifugal force during the rotation so that the foreign substances included in the fluid can be away from the rotation shaft.