KR20040082743A - Ball of valve and manufacturing method therefor molding ball twice - Google Patents
Ball of valve and manufacturing method therefor molding ball twice Download PDFInfo
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- KR20040082743A KR20040082743A KR1020030017393A KR20030017393A KR20040082743A KR 20040082743 A KR20040082743 A KR 20040082743A KR 1020030017393 A KR1020030017393 A KR 1020030017393A KR 20030017393 A KR20030017393 A KR 20030017393A KR 20040082743 A KR20040082743 A KR 20040082743A
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- South Korea
- Prior art keywords
- ball
- valve
- molding
- manufacturing
- closing
- Prior art date
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims description 11
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910010037 TiAlN Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- -1 polyethylene fluoride Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
Description
본 고안의 개폐밸브용 볼제조방법 및 그 밸브 볼에 관한 것으로서, 더욱 상세하게는 볼밸브는 밀폐률이 높은 장소 및 배관에 사용되는 것으로 밸브내의 볼제작시 정확한 크기의 볼밸브에 관한 것이다.The present invention relates to a ball manufacturing method for an on-off valve and a valve ball thereof, and more particularly, a ball valve is used in a place and a pipe having a high sealing rate, and more particularly, to a ball valve having an accurate size during ball production in a valve.
현재 밸브가 는 모든 장치와 기기 등에서 유체, 기체등을 개폐시키는 중요한 작용을 하고 있으며, 그 대상과 방법도 다양하게 개발되고 있다.Currently, valves play an important role in opening and closing fluids and gases in all devices and devices, and various objects and methods have been developed.
밸브는 각종 관로 상에설치되어서 유체의 흐름을 자동 또는 수동으로 단속하는 90도 회전밸브로서, 매우 양호한 기밀유지 특성을 갖고 있으며, 소프트 시트인 경우는 기밀성능이 매우 양호하여 완전차단까지 가능하나 금속시트는 내열성이 우수하지만 차단성능은 소프트 시트에 비해서 떨어진다.The valve is a 90-degree rotary valve installed on various pipes to control the flow of fluid automatically or manually. It has very good airtightness, and in the case of soft seats, the airtightness is very good and it can be completely blocked. The sheet has excellent heat resistance, but the barrier performance is lower than that of the soft sheet.
볼을 감싸고 있는 밸브시트는 기밀을 확실하게하고, 또한 비교적 적은 운전토크를 갖고 있다. 볼의 유로현상이 원형으로 밸브 입구 및 출구의 형상과 같은 모양이기 때문에 유로저항도 매우 적다. 이는 범용의 밸브 중에서 특히 저압의 상온 유체를 차단하고 제어하는 특성을 갖고 있다는 것이다.The valve seat surrounding the ball ensures airtightness and has a relatively low operating torque. Since the flow path of the ball is circular and the shape of the valve inlet and outlet is the same, the flow path resistance is very low. This is because it has the characteristic of blocking and controlling the low temperature room temperature fluid among general purpose valves.
따라서, 거의 모든 볼 밸브는 연결배관의 호칭 직경보다 작은 구경 유로직경을 갖는다. 볼 밸브에 있어서 가장 핵심적인 요소는 볼과 밸브시트 사이를 밀폐시키는 시링 수단이다. 대부분의 볼 밸브는 탄력성이 좋은 PTEE(polytrafluore ethylene)가 가장 널리 쓰이고 유체의 부식에 따라서 특별한 용도로 나이론, 성형흑연 및 PTEE에 성형 흑연분말을 함침한 시링 재료가 있다. 볼 밸브의 시링 재료에 있어 볼과 시링 재료가 금속인 경우가 가장 이상적이다.Therefore, almost all ball valves have a diameter diameter of the passage smaller than the nominal diameter of the connecting pipe. The most essential element in a ball valve is the sealing means for sealing between the ball and the valve seat. Most ball valves have the most widely used elastic polyethylene fluoride (PTEE), and have a ring material impregnated with nylon, molded graphite and PTEE molded graphite powder for special applications depending on the corrosion of the fluid. In the balling material of a ball valve, the ball and the ring material are most ideal.
볼 밸브가 점점 콘트롤 밸브로 사용되는 추세에 있는 데 지금까지 문제는 밸브시트의 재질 때문에 고온 고압에 사용의 제한이 있었으며,밸브시트의 재질을 향상시켜 메탈 밸브시트가 개발되고 있다.Ball valves are increasingly used as control valves. Until now, the problem has been that the valve seat has limited use in high temperature and high pressure due to the material of the valve seat, and the metal valve seat is being developed by improving the material of the valve seat.
볼 밸브는 같은 호칭 직경을 가진 타 종류의 밸브 보다도 간단한 구조, 보수의 용이성, 제작성의 편리성 등 경제적인 측면이 많은 반면 밸브시트 구조의 치밀성, 밸브시트 재료의 제한 및 배관 계통의 설치시 주의 사항 등 단점도 있다.Ball valves have more economical aspects than other valves with the same nominal diameter in terms of simple structure, ease of repair, and ease of manufacture.However, caution is required for compactness of valve seat structure, restriction of valve seat materials, and installation of piping system. There are also disadvantages.
결국 사용상의 제약은 볼을 잡아주고, 볼과 밸브 몸체의 기밀을 유지하는 밸브시트의 시일(seal) 구조의 재질 사양에 달렸다.In the end, the constraints on use depend on the material specification of the seal structure of the valve seat that holds the ball and keeps the ball and the valve body airtight.
이러한 볼 밸브가 설치되는 곳은, 배관재료의 선정과 특성에 따라 건축배관과 공업배관으로 구분되어 지고, 건축배관의 종류에는 급수배관, 급탕배관, 냉.난방배관, 배수.배기배관으로 구분되며 이송물체는 대체로 물, 기름, 증기, 도시 가스 등으로 한정되고, 관의 재질은 배관용 탄소 강관이나 합성 수지관, 주철관, 콘크리트관, 동관 등이 사용되며, 관의 지름은 공업배관에 비해 가는 편이고, 이음의 방법도 강관의 경우 나사 이음을 많이 하는 것이다.The place where the ball valve is installed is divided into the building piping and the industrial piping according to the selection and characteristics of the piping material. The types of building piping are divided into the water supply pipe, the hot water supply pipe, the cooling / heating pipe, the drain and the exhaust pipe. Transfer objects are generally limited to water, oil, steam, city gas, etc., and the material of pipe is carbon steel pipe, PVC pipe, cast iron pipe, concrete pipe, copper pipe, etc. On the other hand, in the case of steel pipes, a lot of threaded joints.
그리고, 공업배관의 종류에는 원유수송배관, 화학공장 내 배관, 집진장치 배관, 발전소 배관 등으로 구분되며, 이송물체는 각종의 산, 알카리, 기타 유,무기물질 등의 액체는 탄소 강관, 합금 강관, 스텐레스 강관, 동관, 동 합금관, 알루미늄관 및 그 합금관, 합성수지관, 연관 등 실로 다양한 가운데서 각각의 상황에 알맞은 것을 선택하여 시공하여야 한다.In addition, types of industrial piping are classified into crude oil transportation piping, chemical plant piping, dust collector piping, and power plant piping, and the transfer objects include various types of acid, alkali, other organic and inorganic materials, such as carbon steel pipes and alloy steel pipes. Stainless steel pipes, copper pipes, copper alloy pipes, aluminum pipes and their alloy pipes, synthetic resin pipes, pipe joints, etc. should be selected from the various and suitable for each situation.
이 볼 밸브의 구조는, 도 1과 도2에 도시한 바와 같이 관로(6)상에 설치되고 밸브에 작용하는 내부 균열에 대한 충분한 강도를 지니고 있는 몸통(2)과, 상기 몸통의 내부에 설치되어 볼과 함께 유체를 개폐시기 한쌍의 밸브시트(3)와, 상기 밸브시트 상에서 90도 회동자재 하면서 유로를 개폐시키는 볼(4) 및 상기 밸브시트 상에서 볼의 회동을 조작하는 작동부(5)로 구성되어 있다.The structure of the ball valve is, as shown in Figs. 1 and 2, a body 2 provided on the conduit 6 and having sufficient strength against internal cracking acting on the valve, and inside the body. And a pair of valve seats 3 for opening and closing the fluid together with the ball, a ball 4 for opening and closing the flow path while being rotated 90 degrees on the valve seat, and an operation part 5 for manipulating the rotation of the ball on the valve seat. Consists of
그러므로, 상기 볼 밸브에 있어 가장 중요한 구성은 볼(4)과, 볼의 양쪽에 긴밀히 맞닿아 유체를 개폐시키는 한 쌍의 밸브시트(3)에 있어 이들볼과 밸브시트의 외부면에 일정 두께의 코팅층을 형성하여서 볼의 개폐 시 볼과 밸브시트가 맞닿는 부위를긴밀히 밀폐시키고, 볼의 잦은 여닫음에도 이들 볼과 밸브시트의 소재 노후화 및 파손을 방지하는 데 있는 것이다.Therefore, the most important configuration of the ball valve is that the ball 4 and the pair of valve seats 3 which closely contact both sides of the ball to open and close the fluid have a predetermined thickness on the outer surface of these balls and the valve seat. By forming a coating layer to close the ball and the valve seat is in close contact with the opening and closing of the ball, and to prevent the material aging and damage of the ball and the valve seat even in frequent opening and closing of the ball.
종래 기술에 의한 볼과 밸브시트의 외부면을 코팅하는 방법을 살펴보면, 볼 밸브를 구성하는 밸브시트의 외부면에 니켈, 크롬, 텅스텐 및 코발트 등의 미립자로 된 금속혼합물을 분사시켜서 일정한 코팅층을 형성하거나 PVD코팅(TiN, TiAlN)을 한 후, 후 가공으로 코팅층의 외부면을 표면 연마한 것으로서, 상기 볼과 밸브시트의 외부면에 코팅된 코팅층의 단점은 밸브시트 볼의 잦은 여닫음으로 인하거나 이송되는 유체가 고온일 경우 볼 밸브의 온도가 상승하게 되고, 고온시 이들 부위가 팽창하여서 박리현상이 일어나며, 코팅층의 외부면을 표면 연마한 후 필히 후 가공 공정을거쳐야 하고, 볼과 밸브시트의 외부면 만을 코팅할 수 있어 볼과 밸브시트의 내부면을 전혀 코팅할 수 없는 단점을 지니고 있다.Looking at the method of coating the outer surface of the ball and valve seat according to the prior art, by spraying a metal mixture of fine particles such as nickel, chromium, tungsten and cobalt to the outer surface of the valve seat constituting the ball valve to form a uniform coating layer Or after PVD coating (TiN, TiAlN), the outer surface of the coating layer is polished by post-processing, the disadvantage of the coating layer coated on the outer surface of the ball and valve seat is due to frequent opening and closing of the valve seat ball If the fluid to be transferred is hot, the ball valve will rise in temperature, and at high temperatures, these areas will expand, resulting in peeling. After polishing the outer surface of the coating layer, it must be processed later. Since only the outer surface can be coated, the inner surface of the ball and the valve seat cannot be coated at all.
그러므로 종래 기술에 의한 볼 밸브는 볼 밸브에 있어 볼과 밸브시트의 외부면에 일반적인 금속혼합물을 분사하여 일정 두께의 코팅층을 형성하거나 또는 PVD코팅층을 형성하는 기술은 밸브시트의 내열성 및 내마모성이 현저히 떨어져서 볼 밸브의 수명이 단축되고, 볼과 밸브시트의 마찰증가하여 작동부의 회전토크가 커지게 되므로 엑츄에이터를 소형화할 수 없을 뿐만 아니라, 코팅층의외부면을 매끄럽게 가공하는 후 가공 공정을 거쳐야 하므로 생산성이 저하되는 단점이 있는 것이다.Therefore, the ball valve according to the prior art forms a coating layer having a predetermined thickness by spraying a general metal mixture on the outer surface of the ball and the valve seat in the ball valve, or the PVD coating layer forms a significant drop in heat resistance and abrasion resistance of the valve seat. As the life of the ball valve is shortened and the friction between the ball and the valve seat increases, the rotating torque of the operating part becomes large. Therefore, the actuator cannot be miniaturized, and the productivity is reduced because the outer surface of the coating layer needs to be smoothly processed. There is a disadvantage.
이러한 문제점을 해결하기 위해 안출한 것으로 실용신안 제2001-39959호의 볼밸브는 관로상에 설치되고 밸브에 작용하는 내부 압력에 대한 충분한 강도를 지니고 있는 몸통; 상기 몸통의 내부에 설치되어 볼과 함께 유체를 개폐시키는 한쌍의 밸브시트; 상기 밸브시트 상에서 90도 회동자재 하면서 유로를 개폐시키는 볼 및 상기 밸브시트 상에서 볼의 회동을 조작하는 작동부로 구성하여서 된 볼 밸브에 있어서,In order to solve this problem, the ball valve of Utility Model No. 2001-39959 is installed on the pipeline and has a sufficient strength to the internal pressure acting on the valve; A pair of valve seats installed in the body to open and close the fluid together with the ball; In the ball valve consisting of a ball for opening and closing the flow path while being rotated 90 degrees on the valve seat and an operating portion for manipulating the rotation of the ball on the valve seat,
상기 볼 밸브를 구성한 밸브시트와 볼의 외부면에 화학증착 방식에 의한 플라즈마-CVD(DLC) 코팅층을 형성하여서 된 것이 공지되어 있다.It is known to form a plasma-CVD (DLC) coating layer by chemical vapor deposition on the valve seat and ball outer surface constituting the ball valve.
그러나, 상기에 저술한 바와 같이 상기 밸브 볼의 제작시 볼이 수축되어 정확한 크기와 큰 오차 인한 누설이 발생되어 밸브를 재가공시 비용 증가되는 문제와 볼밸브에 코팅하는 방법은 밸브 볼의 정확한 크기를 만들기가 어려운 문제점이 있었다.However, as described above, the ball is contracted during the manufacturing of the valve ball, so that the leakage occurs due to the correct size and a large error, and the cost of reprocessing the valve and the method of coating the ball valve have the exact size of the valve ball. There was a problem that was difficult to make.
따라서, 종래의 문제점을 해결하기 위해 안출한 것으로 본 발명의 목적은 볼밸브는 밀폐률이 높은 장소 및 배관에 사용되는 것으로 밸브내의 볼제작시 정확한 크기의 볼 밸브를 제공하는 데 그 목적이 있다.Accordingly, an object of the present invention is to provide a ball valve of the correct size when producing a ball in the valve as the ball valve is used in places and pipes with a high sealing rate.
본 발명의 다른 목적은 대량생산과 정확한 밸브 볼과 다양한 크기의 밸브 볼을 제작할 수 있는 볼 밸브를 제공하는 데 있다.It is another object of the present invention to provide a ball valve capable of producing mass produced and accurate valve balls and valve balls of various sizes.
이러한 목적을 달성하기 위한 본 발명은 밸브에 작용하는 내부 압력에 대한 강도를 지니고 있는 몸통과 그 내부에 설치되어 볼과 함께 유체를 개폐시키는 한쌍의 밸브시트와 유로를 개폐시키는 볼과 볼의 회동을 조작하는 작동부로 구성된 볼 밸브의 볼제조방법에 있어서,The present invention for achieving this object is a ball having a body having a strength against the internal pressure acting on the valve and a pair of valve seats and openings for opening and closing the fluid with the ball to open and close the rotation of the ball and the ball. In the ball manufacturing method of the ball valve composed of the operating part to operate,
상기 합성수지, PP, ABS등의 합성수지의 수축률을 감안한 크기의 성형틀을 제조하는 단계와; 상기 성형틀에 의해 성형된 볼을 재 성형틀에 넣고, 실제의 크기의 볼을 2차 성형시 같은 재질 또는 다른 재질로 성형하는 단계로 이루어져 달성하였다.Manufacturing a molding mold having a size in consideration of the shrinkage of the synthetic resin such as the synthetic resin, PP, and ABS; The ball formed by the molding die is put into a re-molding mold, and achieved by forming a ball of the actual size in the same material or a different material during the second molding.
도 1은 종래의 개폐뺄브를 도시한 사시도,1 is a perspective view showing a conventional opening and closing groove,
도 2는 종래의 개폐밸브의 단면도,2 is a cross-sectional view of a conventional on-off valve,
도 3은 본 발명의 비림직한 실시예의 개폐밸브용 볼을 사시도,3 is a perspective view of a ball for an open / close valve according to a non-liminal embodiment of the present invention;
도 4는 본 발명의 개폐밸브용 볼을 도시한 단면도,4 is a cross-sectional view showing a ball valve for the on-off valve of the present invention;
도 5는 본 발명의 다른 실시예의 개폐밸브용 볼을 도시한 단면도이다.5 is a cross-sectional view showing a ball for an open / close valve according to another embodiment of the present invention.
*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
10 : 밸브용 볼20 : 1차성형 볼10: valve ball 20: primary forming ball
30 : 결착구40 : 2차성형 볼30: fastener 40: secondary molding ball
50 : 스크류1 : 밸브50: screw 1: valve
이하, 본 발명의 발람직한 실시예의 개폐밸브용 볼의 제조방법 및 그 볼을 도면을 참조하여 상세히 설명한다.Hereinafter, a manufacturing method and a ball for a valve for opening and closing valve of the preferred embodiment of the present invention will be described in detail with reference to the drawings.
도 3내지 도 5에 도시한 바와 같이 본 발명의 개폐밸브용 볼의 제조방법은 밸브에 작용하는 내부 압력에 대한 강도를 지니고 있는 몸통과 그 내부에 설치되어 볼과 함께 유체를 개폐시키는 한쌍의 밸브시트와 유로를 개폐시키는 볼과 볼의 회동을 조작하는 작동부로 구성된 볼 밸브의 볼제조방법에 있어서,3 to 5, the method for manufacturing an on / off valve ball according to the present invention includes a body having strength against internal pressure acting on the valve and a pair of valves installed inside and closing the fluid together with the ball. In the ball manufacturing method of the ball valve consisting of a ball for opening and closing the seat and the flow path and the operating portion for operating the ball rotation,
상기 합성수지, PP, ABS등의 수축률을 감안한 크기의 성형틀 및 제 1차성형 볼(20)을 제조하는 단계와; 상기 성형틀에 의해 성형된 제 1차성형 볼을 재 성형틀에 넣고, 실제의 크기의 볼을 2차 성형시 같은 재질 또는 다른 재질로 제2차성형 볼(20)을 성형하는 단계로 이루어져 제조하였다.Manufacturing a molding die and a primary molding ball 20 having a size in consideration of shrinkage ratios of the synthetic resin, PP, and ABS; The first molding ball molded by the molding die is put into the re-molding mold, and the second size of the ball molding the second molding ball 20 made of the same material or different material during the second molding It was.
제 1차성형 볼(40)을 합성수지, PP, ABS등의 수축률을 감안한 크기의 성형틀에서 제조하여 제1차성형 볼을 제조하되 제 2차 성형하여 결합이 잘되도록 결착구를 다수개 형성하여 제조하여 성형 볼을 형성하고, 제 2차 성형볼을 그 위에 성형함으로서 수축률의 변화를 최소화시키도록 하여 제조하였다.The first molding ball 40 is manufactured in a molding mold having a size in consideration of the shrinkage ratio of synthetic resin, PP, ABS, etc. to manufacture the first molding ball, but the second molding is performed to form a plurality of fasteners for good bonding. It was prepared to form a molded ball, and by molding the secondary molded ball thereon to minimize the change in shrinkage.
다음, 도 3과 도 4에 도시한 본 발명의 개폐용 밸브 볼은Next, the opening and closing valve ball of the present invention shown in Figures 3 and 4
밸브 볼에 있어서, 유로구를 형성하고, 결착구(30)를 형성한 1차성형 볼(40)과, 상기 1차성형 볼의 상부에 일정한 두께의 2차성형 볼(20)을 도포한 2중 구조로 형성된 특징이 있다.In the valve ball, a flow path sphere is formed, and the primary molding ball 40 in which the binding hole 30 is formed, and the secondary molding ball 20 having a constant thickness are coated on the upper portion of the primary molding ball. There is a characteristic formed in the structure.
본 발명의 다른 실시예로 도 5에 도시한 바와 같이 1차성형 볼(40)은 두개의 절편(40-1,40-2)으로 구성하되 결착구(30)에 스크류(50)로 두 절편을 결착하도록 구성하고, 상기 1차성형 볼에 결착구를 포함하도록 도포한 구조하여 형성한 특징이 있다.In another embodiment of the present invention, as shown in FIG. 5, the primary molding ball 40 is composed of two segments 40-1 and 40-2, but two segments with screws 50 in the binding port 30. It is configured to bind, and the structure formed by coating so as to include a binder in the primary molded ball.
상기와 같이 구성함으로서, 절밀한 볼을 제조할 수 있으며, 그러한 볼을 밸브에 구성함으로서, 밀착률과 누수률을 최소화 시킨 특징이 있다.By configuring as described above, it is possible to manufacture a dense ball, and by configuring such a ball in the valve, there is a feature that minimizes the adhesion rate and leakage rate.
이상과 같이 본 발명은 합성수지,PP, ABS등의 성형시 수축률로 인한 밸브 볼의 크기를 정확히 성형할 수 없었던 것을 2중으로 두 번 성형함으로서 정밀한 볼을 제조할 수 있으며, 특히 그 밀폐률과 변형을 최소화시킨 효과가 있으므로 밸브 산업상 매우 유용한 발명인 것이다.As described above, the present invention can manufacture precise balls by double-molding that the size of the valve ball due to shrinkage during molding of synthetic resin, PP, ABS, etc. cannot be precisely formed, and in particular, the sealing rate and deformation It is a very useful invention in the valve industry because it has a minimized effect.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030017393A KR20040082743A (en) | 2003-03-20 | 2003-03-20 | Ball of valve and manufacturing method therefor molding ball twice |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030017393A KR20040082743A (en) | 2003-03-20 | 2003-03-20 | Ball of valve and manufacturing method therefor molding ball twice |
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| KR20040082743A true KR20040082743A (en) | 2004-09-30 |
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| KR1020030017393A KR20040082743A (en) | 2003-03-20 | 2003-03-20 | Ball of valve and manufacturing method therefor molding ball twice |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1952910A2 (en) * | 2007-01-30 | 2008-08-06 | Valve-Tek Mfg. Co., Ltd. | Valve ball element and method of manufacturing a valve ball element |
| KR20140128983A (en) * | 2012-02-28 | 2014-11-06 | 가부시키가이샤 기츠 | Trunnion ball valve for high pressure, and hydrogen station |
-
2003
- 2003-03-20 KR KR1020030017393A patent/KR20040082743A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1952910A2 (en) * | 2007-01-30 | 2008-08-06 | Valve-Tek Mfg. Co., Ltd. | Valve ball element and method of manufacturing a valve ball element |
| EP1952910A3 (en) * | 2007-01-30 | 2011-10-05 | Valve-Tek Mfg. Co., Ltd. | Valve ball element and method of manufacturing a valve ball element |
| KR20140128983A (en) * | 2012-02-28 | 2014-11-06 | 가부시키가이샤 기츠 | Trunnion ball valve for high pressure, and hydrogen station |
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