CN2264823Y

CN2264823Y - Valve

Info

Publication number: CN2264823Y
Application number: CN 96226410
Authority: CN
Inventors: 程熙昆
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-05-23
Filing date: 1996-05-23
Publication date: 1997-10-15
Anticipated expiration: 2006-05-23

Abstract

The utility model discloses a valve. A guide sleeve (3) and a supporting guide sleeve (10) are arranged on the upper part and the lower part of the inner cavity of the valve and along the inner edges of a valve cap (2) and a valve body (9). The valve rod (1) is connected with a nut (7), and the nut (7) is connected with a cylindrical plug (11); the upper end and the lower part of the supporting guide sleeve (10) are provided with inner O-shaped compensation sealing rings (8) (12). When the valve rod (1) is rotated, the cylindrical plug (11) can move up and down in a reciprocating way along with the nut (7), and the valve can be opened or closed; the two sealing rings play the sealing action, and the fluid medium can not flow to the upper part of the valve cavity; the valve rod (1) can not be corroded by the fluid medium. The using effect of the valve can be guaranteed, and the service life can be extended.

Description

A kind of valve

The utility model relates to a kind of valve, particularly a kind of plunger type gate valve.

That uses on factory's conveyance fluid medium pipeline at present has a kind of gate valve, and this valve is on its valve rod, and by the circular flat-shaped flashboard that is threaded, flashboard moves up and down at valve rod during the turn valve rod, thereby makes valve closing or unlatching.This valve in use, when particularly opening, can be full of flowing medium in the valve pocket, valve rod and flashboard be water contacting or contain the flowing medium of water often, valve rod or flashboard are corroded, impurity in the flowing medium perhaps appears attached on valve rod or the flashboard, the sealing that not only causes contacting imprecision between flashboard and the valve body and influence valve, even flashboard can occur and on valve rod, can not move, cause valve not use at last, the increase of maintenance number of times and replacing valve have influenced the normal operation of conveyance conduit.

The purpose of this utility model provides a kind of valve, this valve is a kind of plunger type gate valve, can the not flow through top of valve pocket of its flowing medium after unlatching, valve rod is contacting fluid not, valve rod can not corroded, can not be attached with impurity yet, prolong the working life of valve, can guarantee the normal operation of conveyance conduit.

To achieve these goals, the technical solution of the utility model is: it is by valve body, valve gap, screw rods etc. are formed, be connected with can be in valve pocket cylindraceous up and down plunger lock body by the nut that screw thread connected on it on the screw rod, in the inner chamber of valve body, be equipped with two interior O type compensation sealing circles, during the turn screw rod, plunger lock body pumps in the inner chamber of valve, and make valve opening or close, interior O type compensation sealing circle closely contacts the purpose that reaches sealing with the lock body, when valve opening, still have an interior O type compensation sealing circle on top closely to contact, thereby make can the not flow through top of valve cavity of flowing medium with the lock body.

Effect and the characteristics that the utlity model has are:

1, the valve rod of this valve can not corroded, and the problem that nut can not move and cause influencing the valve use can not appear in the yet non-cohesive impurity that has in the flowing medium, has reduced maintenance or has changed valve number of times, the working life that can improve valve greatly.

2, valve is when opening, and particularly when complete opening, in the valve passage without hindrance, the flowing medium non-resistance is more suitable for being installed in and is used for carrying flow velocity very fast or contain on the pipeline of flowing medium of more impurity, for example on the blow-off line and on the fire protection pipeline.

Below in conjunction with accompanying drawing and with embodiment the utility model is done to describe in detail:

Fig. 1: longitudinal section of the present utility model

Fig. 2: the plan view of the utility model guide pin bushing

Fig. 3: among Fig. 2 along A-A line sectional view

Fig. 4: among Fig. 1 along B-B line sectional view

Fig. 5: among Fig. 1 along C-C line sectional view

Fig. 6: the plan view of the utility model supporting guide pin bushing

Fig. 7: the plan view of the utility model supporting guide pin bushing

Fig. 8: the side view of the utility model supporting guide pin bushing

Fig. 9: the plan view of the utility model feather key

Figure 10: among Fig. 9 along D-D line sectional view

Shown in Figure 1 is structure of the present utility model, it is by valve gap 2, valve body 9, be threaded that 4 valve rod 1 grade forms, the inner chamber of its valve gap 2 and valve body 9 is cylindrical shape, the two with bolt fastener 5 in conjunction with after constituted columnar valve cavity, top at valve cavity, inner edge along valve gap 2 and valve body 9 is equipped with a guide pin bushing 3, bottom at valve cavity, inner edge along valve body is equipped with a supporting guide pin bushing 10, valve rod 1 is connected with a nut that only moves up and down 7 by the screw thread on it 4, one of connection is positioned at and is equipped with the plunger 11 that can pass through the circular hole of valve rod 1 having of its below on inner cavity and the upper-end surface on the nut 7, in the top and bottom of supporting guide pin bushing 10, O type compensation sealing circle 8 and interior O type compensation sealing circle 12 in being equipped with respectively.

Said guide pin bushing 3 is as Fig. 2, Fig. 3, shown in Figure 4, it is to be equipped with valve rod hole 14 on the upper-end surface, the lower end is the cylinder of opening, be equipped with the annulus 13 of the projection that places valve gap 2 and valve body 9 joints at the center of its outer rim, radially be equipped with symmetrical two vertical elongated grooves 15 within it on the wall.

Structure such as Fig. 6, Fig. 7, shown in Figure 8 of supporting guide pin bushing 10, it be one therein the heart have the sleeve of the vertical elongated circular hole 24 that the outer circle diameter with plunger is complementary, the horizontal elongated circular hole 23 that also has the gateway equal diameters of diameter and valve body 9 both sides on it, be drilled with equally distributed small sircle hole 22 thereon on the lower end surface, wall radially is equipped with symmetrical two vertical elongated grooves 21 within it, is equipped with Sealing 25 in the groove 21.

Said nut 7 as shown in Figure 4, it is the bluff body of a circle, its center is equipped with a screw 16 that has the screw thread that matches with the screw thread 4 of valve rod 1, also be equipped with four circular holes 17 of symmetrical distribution on this nut, on its outer rim, radially be equipped with two vertical elongated grooves 18 of symmetry, be fixed with feather key 20 with screw 19 in the groove 18, this nut 7 be connected to a fixed together with plunger 11 by circular hole 17 usefulness hexagon socket head cap screws 6.

The feather key of being fixed in the groove 18 of said nut 7 20, it is the flat key that two ends are semicircle shape about in the of, be equipped with two screw holes 26 on it, after being fixed on this feather key in the groove 18 by screw hole 26 usefulness screws 19, and this feather key placed the groove 15 that is equipped with on guide pin bushing 3 inwalls, this feather key can be moved up and down in groove.

The valve that the utility model provides, turn valve rod 1 during use, the rotation of valve rod 1 impels nut 7 under the control of feather key 20, move back and forth up and down, thereby driving plunger 11 moves back and forth up and down in valve cavity, when plunger 11 moves to the bottom of valve cavity, plunger 11 is sealed the passage of valve, valve is closed, as reverse turn valve rod 1, plunger 11 moves up, and flowing medium is the passage by valve just, and size and the flow velocity that fluid Jie measures flow controlled in the position that can suitably adjust plunger 11.

The interior O type compensation sealing circle 8 and 12 that this valve uses, the artificer who is this valve adopts my patent in the patent No. 9322896266 of application on July 31st, 1993, the sealing circle places the top and bottom of supporting guide pin bushing, medium can enter in the inner chamber of interior O type compensation sealing circle by the duct on small sircle hole 22 on the supporting guide pin bushing 10 and the seal ring T shape ring, O type compensation sealing circle produces outside tension and promotes seal ring in making, and it is closely contacted with plunger and reaches the purpose of sealing.When throttle down, two seal rings seal simultaneously, when opening, the seal ring of upper end is still salable, though therefore this valve be in off position, or opening state, all can not the flow through top of valve cavity of flowing medium, valve gap 2 does not have dielectric leakage with the contacting point of valve rod 1, sealing need be set; And on supporting guide pin bushing inwall, radially be equipped with in the vertically elongated groove 21, being placed with Sealing 25, the sealing part closely contacts with plunger 11, as shown in Figure 5, and making valve under complete closing state, flowing medium can not seepage be gone over, and has reached good sealing effect.

Owing to have the horizontal elongated circular hole 23 that equates with the internal diameter of valve import and export on the supporting guide pin bushing 10, when the valve complete opening, non-resistance when flowing medium is flowed through valve, be more suitable for being installed in and be used for carrying flow velocity very fast or contain on the pipeline of flowing medium of more impurity, for example on the blow-off line and on the fire protection pipeline.

Claims

1, a kind of valve, it is by valve gap (2), valve body (9), be threaded that the valve rod (1) etc. of (4) forms, the inner chamber of its valve gap (2) and valve body (9) is cylindrical shape, the two with bolt fastener (5) in conjunction with after constituted columnar valve cavity, it is characterized in that: on the top of valve cavity, inner edge along valve gap (2) and valve body (9) is equipped with a guide pin bushing (3), bottom at valve cavity, inner edge along valve body (9) is equipped with a supporting guide pin bushing (10), valve rod (10) is connected with a nut that only moves up and down (7) by the screw thread on it (4), nut (7) is gone up and is connected a plunger (11) that is equipped with the circular hole that can pass through valve rod (1) on inner cavity and the upper-end surface that has that is positioned at its below, in the top and bottom of supporting guide pin bushing (10), O type compensation sealing circle (8) and interior O type compensation sealing circle (12) in being equipped with respectively.

2, a kind of valve according to claim 1, it is characterized in that: said guide pin bushing (3), be to be equipped with valve rod hole (14) on the upper-end surface, the lower end is the cylinder of opening, be equipped with the annulus (13) of the projection that places valve gap (2) and valve body (9) joint at the center of its outer rim, radially be equipped with symmetrical vertical elongated two grooves (15) within it on the wall.

3, a kind of valve according to claim 1, it is characterized in that: said supporting guide pin bushing (10), be one therein the heart have the sleeve of the vertical elongated circular hole (24) that the outer circle diameter with plunger (11) is complementary, the horizontal elongated circular hole (23) that also has diameter and valve body (9) gateway, both sides equal diameters on it, be drilled with equally distributed small sircle hole (22) thereon on the lower end surface, wall radially is equipped with symmetrical vertical elongated two grooves (21) within it, is equipped with Sealing (25) in the groove (21).

4, a kind of valve according to claim 1, it is characterized in that: said nut (7), it is the bluff body of a circle, its center is equipped with a screw (16) that has the screw thread that matches with the screw thread (4) of valve rod (1), also be equipped with four circular holes (17) of symmetrical distribution on this nut, on its outer rim, radially be equipped with vertical elongated two grooves (18) of symmetry, be fixed with feather key (20) with screw (19) in the groove (18), with hexagon socket head cap screw (6) this nut (7) and plunger (11) be connected to a fixed together by circular hole (17).

5, according to claim 1 or 4 described a kind of valves, it is characterized in that: said feather key (20), it is the flat key that two ends are semicircle shape about in the of, be equipped with two screw holes (26) on it, with screw (19) this feather key (20) is fixed in the groove (18) of nut (7) by screw hole (26) after, and this feather key (20) placed the groove (15) that is equipped with on guide pin bushing (3) inwall, this feather key can be moved up and down in groove.