CN201028111Y - Non-leakage valve - Google Patents

Abstract

The utility model provides an anti-leakage valve and belongs to a valve product, wherein, an inner valve rod and an outer valve rod are connected into a whole by threads; and as a whole, the inner and outer valve rod is arranged inside a valve body a valve cover and a valve rod supporting frame. The lower end of the inner valve rod is connected with a valve clack; while the upper part of the outer valve rod is inserted into a hole on the top of the valve rod supporting frame to be positioned axially and radially. A supporting seat of the outer valve rod, a lower skeleton oil seal, a middle skeleton oil seal, an upper skeleton oil seal and a press cover are orderly mounted on the outer valve rod, wherein the supporting seat of the outer valve rod, the lower skeleton oil seal, the middle skeleton oil seal and the upper skeleton oil seal are positioned in an inner hole of the valve cove; the press cover is fixed on the upper end face of the valve cover, O-shaped sealing rings are mounted on the inner side and outer side of the supporting seat of the valve rod. The valve is simple in structure, low in cost, good in sealing performance, without leakage even after long-time use, without requirement on maintenance, labor-saving in operation, long in service life, wide in application range, and can be applied to various liquid delivering pipeline system.

Description

The ne-leakage valve

Technical field

The utility model belongs to the valve type product, relates generally to a kind of ne-leakage valve.

Background technique

Traditional valve adopts single stem structure, the valve rod lower end connects flap, the top of valve rod is provided with outside thread, this outside thread be fitted in screw-internal thread fit on the supporting frame realize valve rod pulling flap on, following motion, finish the Push And Release of valve, its stem lower portion exterior circular column partly with between the valve gap inner hole wall adopts stuffing to cooperate gland extrusion mode to carry out the sealing of sealing surface, in actual use, since stem shaft to move up and down, make to produce big frictional resistance between stem lower portion exterior circular column surface and the stuffing box packing, seriously aggravated the wearing and tearing of filler, produce seepage, increase the adjustment maintenance workload, reduced component working life.In addition, when valve install to be adjusted, the gland impacting force was excessive, and the valve switch resistance is big, operate heavyly, and the gland impacting force is too small, and valve can produce leak of liquid, to assembling and adjustment technology is had relatively high expectations.The 3rd, outside the outside thread on valve rod top is exposed to, accelerated the corrosion of valve rod and floating of stolen goods dirt, also influence part working life, increased the maintenance work amount.

Summary of the invention

The purpose of this utility model is exactly technical problem and the defective that exists at above-mentioned conventional valves, design provides a kind of ne-leakage valve, reaches Maintenance free maintenance in long-term use no liquid seepage, long service life, rapid operation, the use, the purpose of adjusting simple and convenient is installed.

Basic design of the present utility model is, periphery is provided with externally threaded inner valve stem and is linked into an integrated entity by internal and external screw thread with the outer valve rod that is provided with internal thread on the endoporus wall outside, and configured in one piece is in valve body, valve gap and valve rod supporting frame inside; The inner valve stem lower end is connected with flap, and outer valve rod top is inserted into axial, radial location in the valve rod supporting frame top-portion apertures rotationally, and handwheel is packed on the outer valve rod upper end portion; The outer valve rod supporting base of suit, lower skeleton oil sealing, middle outside framework oil seal, upper skeleton oil sealing and gland successively from bottom to up on the valve rod downside outside outside, and outer valve rod supporting base and down, in, the upper skeleton oil sealing is arranged in the valve gap endoporus, gland is fixed on the valve gap upper-end surface, Transverse plane is pressed against on the upper skeleton oil sealing upper side under the gland, and upper, middle and lower outside framework oil seal and outer valve rod supporting base are axially located in the valve gap endoporus; Be set with O RunddichtringO and O RunddichtringO outside on valve rod supporting base endoporus wall and the outer round surface, O RunddichtringO and O RunddichtringO respectively with valve gap endoporus wall and the tight contact matching of outer valve rod downside outer round surface, so far constitute the ne-leakage valve.

The utility model is simple in structure, cheap, easy for installation, Maintenance free maintenance in the use, rapid operation is light, good sealing effect, long service life, applied widely, can be widely used in the various liquid transmission pipeline system and use, such as oil, chemical industry, plumbing etc., this structure can be installed on gate valve, stop valve and other conventional valves and use.

Description of drawings

Accompanying drawing is the overall assembly structure schematic representation of ne-leakage valve.

Piece number explanation among the figure:

1, outer valve rod supporting base, 2, O RunddichtringO, 3, inner valve stem, 4, handwheel, 5, hand wheel nut, 6, outer valve rod, 7, gland, 8, upper skeleton oil sealing, 9, middle outside framework oil seal, 10, lower skeleton oil sealing, 11, O RunddichtringO, 12, flap, 13, valve gap, 14, valve body, 15, valve rod supporting frame.

Embodiment

Below in conjunction with accompanying drawing the utility model optimum implementation is described in detail.The ne-leakage valve comprises valve body 14, valve gap 13, flap 12, valve rod supporting frame 15, handwheel 4 and hand wheel nut 5, periphery is provided with externally threaded inner valve stem 3 and is linked into an integrated entity by internal and external screw thread with the outer valve rod 6 that is provided with internal thread on the endoporus wall outside, and configured in one piece is in valve body 14, valve gap 13 and valve rod supporting frame 15 inside; Inner valve stem 3 lower ends are connected with flap 12, and outer valve rod 6 tops are inserted into axial, radial location in valve rod supporting frame 15 top-portion apertures rotationally, and handwheel 4 is packed on outer valve rod 6 upper end portions; The outer valve rod supporting base 1 of suit, lower skeleton oil sealing 10, middle outside framework oil seal 9, upper skeleton oil sealing 8 and gland 7 successively from bottom to up on the valve rod 6 downside outsides outside, and outer valve rod supporting base 1 and down, in, upper skeleton oil sealing 10,9,8 is arranged in valve gap 13 endoporus, gland 7 is fixed on valve gap 13 upper-end surfaces, 7 times Transverse planes of gland are pressed against on upper skeleton oil sealing 8 upper sides, and upper, middle and lower outside framework oil seal 8,9,10 and outer valve rod supporting base 1 are axially located in valve gap 13 endoporus; Be set with O RunddichtringO 2 and O RunddichtringO 11 on valve rod supporting base 1 endoporus wall and the outer round surface outside, O RunddichtringO 11 and O RunddichtringO 2 respectively with valve gap 13 endoporus walls and the tight contact matching of outer valve rod 6 downside outer round surface.

When operation is used, rotating the outer valve rod 6 of handwheel 4 drives with hand rotates in valve rod supporting frame 15 holes, internal thread and 3 externally threaded cooperations of inner valve stem by outer valve rod 6, make inner valve stem 3 go up or move down in valve rod 6 endoporus outside, the flap that spurs on its lower end upwards or down moves, and finishes the operation that opens or closes of ne-leakage valve.O RunddichtringO 2,10 on upper, middle and lower outside framework oil seal 8,9,10 and the outer valve rod supporting base 1 has guaranteed the seal action between outer valve rod 6 and valve gap 13 endoporus effectively.

Claims (1)

1. ne-leakage valve, comprise valve body (14), valve gap (13), flap (12), valve rod supporting frame (15), handwheel (4) and hand wheel nut (5), it is characterized in that periphery outside is provided with externally threaded inner valve stem (3) and is linked into an integrated entity by internal and external screw thread with the outer valve rod (6) that is provided with internal thread on the endoporus wall, and configured in one piece is in valve body (14), valve gap (13) and valve rod supporting frame (15) inside; Inner valve stem (3) lower end is connected with flap (12), and outer valve rod (6) top is inserted into axial, radial location in valve rod supporting frame (15) top-portion apertures rotationally, and handwheel (4) is packed on outer valve rod (6) upper end portion; The outer valve rod supporting base (1) of suit successively from bottom to up on valve rod (6) the downside outside outside, lower skeleton oil sealing (10), middle outside framework oil seal (9), upper skeleton oil sealing (8) and gland (7), and outer valve rod supporting base (1) and following, in, upper skeleton oil sealing (10), (9), (8) be arranged in valve gap (13) endoporus, gland (7) is fixed on valve gap (13) upper-end surface, gland (7) Transverse plane down is pressed against on upper skeleton oil sealing (8) upper side, will go up, in, lower skeleton oil sealing (8), (9), (10) reaching outer valve rod supporting base (1) axially locatees in valve gap (13) endoporus; Be set with O RunddichtringO (2) and O RunddichtringO (11) outside on valve rod supporting base (1) endoporus wall and the outer round surface, O RunddichtringO (11) and O RunddichtringO (2) respectively with valve gap (13) endoporus wall and the tight contact matching of outer valve rod (6) downside outer round surface.

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