IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0810839
(1991-12-20)
|
우선권정보 |
DE-4041136 (1990-12-21) |
발명자
/ 주소 |
- Andris Raimund (Villingen-Schwenningen DEX)
|
출원인 / 주소 |
- Firma Raimund Andris GmbH & Co., KG. (Villingen-Schwenningen DEX 03)
|
인용정보 |
피인용 횟수 :
32 인용 특허 :
0 |
초록
▼
In a metering and spray pump for liquid, low-viscosity and pasty substances, an elastic bellows 3 is arranged between two plastic housing parts 1, 2 that are telescopingly movable relative to one another, connecting them. The bellows, acting as a discharge valve 18, has, at one end, a valve annular
In a metering and spray pump for liquid, low-viscosity and pasty substances, an elastic bellows 3 is arranged between two plastic housing parts 1, 2 that are telescopingly movable relative to one another, connecting them. The bellows, acting as a discharge valve 18, has, at one end, a valve annular wall 15 that surrounds the generated surface 17 of an inner annular discharge seat 8 made in one piece with the first housing part 1 in a sealing manner and such that it can be lifted off. As a suction valve 58, the bellows 3 has, at its other end, a valve annular wall 54 which is in sealing and separable contact with the generated surface 43 of a valve seat 42 made in one piece with the second housing part 2 such that it can be lifted off, and the medium to be pumped is drawn into the bellows 3 through the valve seat. To guarantee high reliability of operation, especially good closing quality at weak valve opening forces, where the quality of closing can be tested even in the dry state, with the smallest possible number of simple and easy-to-assemble individual parts, the valve annular wall 15 of the discharge valve 18 and the valve annular wall 54 of the suction valve 58, which valve annular wall 54 is provided with a closed front wall 57, are each in contact with conical or hemispherical generated surfaces 17, 43, wherein both valve annular walls 15, 54 are connected to the bellows 3 both radially elastically and elastically movably in the axial direction.
대표청구항
▼
Metering/spray pump comprising: a housing; a bellow means connected to said housing and including a pump chamber, said bellows means being telescopingly movable relative to said housing for changing a volume of said pump chamber during telescopic movements; a discharge seat on said housing and havin
Metering/spray pump comprising: a housing; a bellow means connected to said housing and including a pump chamber, said bellows means being telescopingly movable relative to said housing for changing a volume of said pump chamber during telescopic movements; a discharge seat on said housing and having a substantially round annular surface; a discharge valve wall on a first end of said bellow means movable into and out of sealing contact with said discharge seat in a radial and axial direction, said discharge valve wall having a substantially annular sleeve-like shape for sealingly surrounding said substantially round annular surface of said discharge seat, said discharge valve wall being movable away from said discharge seat when pressure between said discharge valve wall and said discharge seat is greater than a pressure on a side of said discharge valve wall opposite said discharge seat; a suction seat connected to a second end of said bellow means, said suction seat having a substantially annular hemispherical generated surface and defining a suction bore; a suction valve wall movable into and out of contact with said suction seat in a radial and axial direction, said suction valve wall having an open edge sealing means for forming a seal between said suction valve wall and said suction seat when said suction valve wall is in contact with said suction seat, said suction valve wall having a substantially annular sleeve-like shape for sealingly surrounding said annular hemispherically generated surface of said suction seat, and a suction closing wall on said suction valve wall for closing one end of said substantially annular sleeve-like shape; first connection web means connecting to said suction valve wall; a connection ring connected to said first connection web means; and second connection web means for connecting said connection ring to said bellow means, said second connection web means, said second connection ring and said first connection web means being axially and radially elastic for movement of said suction valve wall away from said suction when a pressure in said pump chamber is less than a pressure in said section bore.
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