CN2246217Y - Multipurpose magnetic-coupling check valve - Google Patents

Abstract

The utility model relates to a multipurpose magnetic coupling stop valve, which is composed of a lower valve body, an upper valve body, a valve core, a valve clack, a valve cover, and a valve cap. The lower valve body is matched with the upper valve body via threads, and the lower valve body and the upper valve body form a hollow cavity; the valve cover is tightly connected with the upper valve body; the valve core and the valve clack are installed in the hollow cavity; the valve cap is covered on the valve cover, and the valve cap are matched with the valve core in an indirect transmission way; the upper part of the valve clack 4 are matched with the lower part of the upper valve body; the bottom part of the valve clack is matched with a valve port on the lower valve body, and the matching diameter of the upper part of the valve clack is larger than the matching diameter of the lower part of the valve clack. The multipurpose magnetic coupling check valve which has the advantages of simple structure, reasonable structure, etc. is suitable for volume production.

Description

Use Magnetic Cooperate Globe Valves more

The utility model relates to a kind ofly uses Magnetic Cooperate Globe Valves more, belongs to a kind of pipeline valve.

The kind and the structure of stop valve of the prior art are varied, open and close for the ease of valve, many servo valves that utilize pressure reduction have been proposed in the prior art, Chinese patent 92240209.4 can be used as the representative of this respect prior art, in addition, valve is as a product that has a large capacity and a wide range, claimed structure is simple, easily manufactured, the structure of above-mentioned patent disclosure makes the valve lower body except that importing and exporting, and also should produce two flanges two sides, it is complicated that structure seems, better scheme is on the basis of servo valve, introduces magnetic-coupled mature technology, is the Chinese patent of CN2216617Y as publication number, it is taken turns by valve, spool, the valve lower body, flap, spool is formed, the flap structure of this stop valve is one cylindric, when opening or closing because its unreasonable structure is used not too flexible.

The purpose of this utility model is to overcome the deficiencies in the prior art and provides a kind of simple in structure, and is easily manufactured, cheap, and is convenient to the close stop valve of full envelope of opening and closing, particularly a kind of Magnetic Cooperate Globe Valves of using more.

The Magnetic Cooperate Globe Valves of using of the present utility model more, form by valve lower body, valve upper body, spool, flap, valve gap and bonnet, valve lower body and valve upper body are by threads engaged and constitute cavity, valve gap closely links to each other with the valve upper body, spool and flap are installed in the cavity, and bonnet cover cooperates on valve gap and with the transmission of valve core chamber ground connection; The top of described flap 4 cooperates with bottom, valve upper body, and the flap lower bottom part cooperates with the valve opening of valve lower body, and flap top fit diameter is bigger than the fit diameter of flap bottom.

Of the present utility modelly many use Magnetic Cooperate Globe Valves, simple and reasonable for structure, to make easyly, cost is low, is suitable for producing in enormous quantities and applying, and seals reliably, is suitable for the working environment of High Temperature High Pressure, prolongs the repair cycle of valve greatly.

Of the present utility model use Magnetic Cooperate Globe Valves for introducing in detail more, take off bright in detail below in conjunction with accompanying drawing:

Accompanying drawing is many structural representations with Magnetic Cooperate Globe Valves of the present utility model.

Referring to accompanying drawing, the Magnetic Cooperate Globe Valves of using of the present utility model more, form by valve lower body 1, valve upper body 2, spool 3, flap 4, valve gap 5 and bonnet 6, valve lower body 1 and valve upper body 2 are by threads engaged and constitute cavity, valve gap 5 closely links to each other with valve upper body 2, spool 3 is installed in the cavity with flap 4, bonnet 6 cover on valve gap 5 and with spool 3 indirectly transmission cooperate; The top of described flap 4 cooperates with bottom, valve upper body, the flap lower bottom part cooperates with the valve opening of valve lower body, flap top fit diameter is bigger than the fit diameter of flap bottom, this structure helps flap top and forms negative pressuren zone when valve is opened, by pressurized gas or liquid effects on its effective stressed S, open this stop valve with less power, relevant principle will be further described at following machine.

Above-mentioned valve lower body 1 has an import 11 and outlet 12, is provided with tabula 13 between its import 11 and the outlet 12, has the valve opening 14 littler than flap 4 bottom surfaces on the tabula 13, and its top is port 15, and the inwall at port 15 places links to each other with valve upper body 2 by screw thread.

Above-mentioned spool 3 is a round bar shape, the cylindric step 31 of the evagination that its middle part has, its lower end has a coniform step 32, and the top of spool 3 is equipped with drive plate 34 rotationally by screw thread, is equipped with homopolarity magnetic patch or magnetic sheet 33 more than two on the drive plate 34 symmetrically.

Above-mentioned valve upper body 2 has the die cavity 21 that can hold spool 3, the middle part inwall of die cavity 21 and the cylindric step 31 of spool 3 are slidably or pass through screw-thread fit, the bottom of die cavity 21 can hold flap 4, and the diameter of the bottom of die cavity 21 is than the slightly larger in diameter of the upper-end surface of flap 4; 2 tops, valve upper body have step surface 22, and the top is that the top is covered by valve gap 5 and into becomes cavity 24 than big uncovered 23 in middle part, can hold in the cavity 24 drive plate 34 and on magnetic patch or magnetic sheet 33, drive plate 34 times holds 7 and is supported on the step surface 22 by rolling.

The longitudinal section of above-mentioned flap 4 has " worker " word shape of through hole 41 for central authorities, to form a bigger stress surface, the bottom of through hole 41 has a conical step 42, and the step 32 on step 42 and the spool 3 matches, and through hole 41 diameters in the flap 4 are bigger than spool external diameter.

Above-mentioned valve gap 5 is positioned on the valve upper body by fastening screw trip bolt etc., can add between them and has internal thread on the sealing gasket (not reflecting among the figure) in order to guarantee its sealing; Stuck in valve gap in order to prevent drive plate 34, on drive plate 34, be provided with ball 8.

Above-mentioned bonnet 6 covers on the valve gap 5 rotationally, holds supporting by ball with rolling between them, magnetic patch is coupled on bonnet 6 bottoms and drive plate corresponding part peace and drive plate different in nature magnetic patch or magnetic sheet 61, and magnetic patch 61 is consistent with the quantity and the distribution situation of magnetic patch 33.

Foregoing transmission cooperation realizes by two magnetic patch: magnetic patch that is equipped with or is embedded with on the bonnet 6 or magnetic sheet 61, according to attracting each other between magnetic sheet or magnetic patch 61 and the magnetic patch 33, reach 34 rotations of drive drive plate by rotation bonnet 6, thereby make spool 3 rotate and then reach the purpose of lifting spool 3, the technology of this respect can be used for reference the magnetic coupling technology; After this stop valve adopts magnetic coupling technical pattern, and be full seal type, promptly eliminated the motive sealing of controlling the running of spool in the prior art outside valve and bringing, application area enlarges greatly, and sealability improves greatly.

For guaranteeing whole stop valve tool better seal, can be the conical surface between the valve opening of the lower bottom part of flap 4 and valve lower body 1 or sphere cooperates, and can between them, install a stuffing box gland 9 additional; In addition, on the fitting surface between valve lower body 1 and the valve upper body 2, be equipped with seal ring 10.

Above-mentioned step 32 also can be sphere with step 42 and cooperates.

Further specify its working principle according to said structure below: the import of valve lower body 1 links to each other with external high pressure pipe line (gas or liquid), when stop valve does not have open mode, it is position shown in Figure 1, because the restriction of the step 42 in the deadweight of flap 4 and 32 pairs of flaps 4 of spool step in the through hole, make the flap lower end surface shut the valve opening 14 of valve lower body, and spool step 32 closely contacts with flap step 42, thoroughly shut valve lower body valve opening 14, this moment, valve lower body import 11 was obstructed with outlet 12, and because the upper-end surface of flap 4 is more smaller than the bottom die cavity of valve upper body 2, in the die cavity of the upper-end surface of flap, be full of pressurized gas or liquid, and passed to the step surface place of flap through hole sealing; When bonnet 6 stressed rotations, owing under magnetic action, rotate with the drive plate 34 of spool screw-thread fit, thereby the drive spool moves upward, thereby make the spool step surface leave the flap step surface, pressurized gas or liquid are come in through the die cavity on flap top from import 11, the flap through hole, valve lower body valve opening flows out from outlet, because the outlet more remaining than spool and flap through hole of the import between flap upper end portion and the die cavity wall is much smaller, make flap upper end portion die cavity form negative pressure (valve lower body import relatively), the pressurized gas of inlet or liquid effects are on the effective lifting surface area of " worker " font on flap top, said effective lifting surface area is when the pressurized gas in the zone of high pressure or liquid effects are on flap, has an active force that makes progress, so that open this stop valve, upwards mention flap, and open stop valve up hill and dale.Opposite spin bonnet when closing stop valve, along with moving down of spool, the flap lower end surface is contacted with the central valve opening place stuffing box gland of valve lower body, after flap is closed, the upper-end surface of flap communicates with the zone of high pressure of import, the bottom surface of the flap formation pressure difference that communicates with the base pressure district in the outlet port of valve, and this pressure difference can make flap fasten more, so the opening and closing valve only needs the strength of tiny control operation valve rod to realize.

Again referring to accompanying drawing, because the magnetic patch of bonnet 6 and drive plate cooperatively interacts, in case bonnet is taken off, this stop valve can't be opened, and help antitheft.

Above-mentioned valve gap is preferably selected for use has magnetic coupling material preferably, adopts stainless steel material to make especially.

The utility model can promptly be connected with bonnet by motor shaft by electric drive in use, can drive the bonnet rotation when motor driving shaft rotates, thereby open and close this stop valve.

Claims (9)

1, a kind of Magnetic Cooperate Globe Valves of using more, form by valve lower body (1), valve upper body (2), spool (3), flap (4), valve gap (5) and bonnet (6), it is characterized in that: valve lower body (1) and valve upper body (2) are by threads engaged and constitute cavity, valve gap (5) connects with the tight root in valve upper body (2), spool (3) and flap (4) are installed in the cavity, bonnet (6) cover valve gap (5) go up and with spool (3) indirectly transmission cooperate; The top of described flap (4) cooperates with bottom, valve upper body, and the flap lower bottom part cooperates with the valve opening of valve lower body, and flap top fit diameter is bigger than the fit diameter of flap bottom.

2, the Magnetic Cooperate Globe Valves of using according to claim 1 more, it is characterized in that above-mentioned valve lower body (1) has an import (11) and outlet (12), be provided with tabula (13) between its import (11) and the outlet (12), have the valve opening (14) littler on the tabula (13) than flap (4) bottom surface, its top is port (15), and the inwall that port (15) is located links to each other with valve upper body (2) by screw thread.

3, the Magnetic Cooperate Globe Valves of using according to claim 1 more, it is characterized in that above-mentioned spool (3) is a round bar shape, the cylindric step (31) of the evagination that its middle part has, its lower end has a coniform step (32), the top of spool (3) is equipped with drive plate (34) rotationally by screw thread, is equipped with homopolarity magnetic patch or magnetic sheet (33) more than two on the drive plate (34) symmetrically.

4, the Magnetic Cooperate Globe Valves of using according to claim 3 more, it is characterized in that above-mentioned valve upper body (2) has the die cavity (21) that can hold spool (3), the cylindric step (31) of the middle part inwall of die cavity (21) and spool (3) slidably or pass through screw-thread fit, the bottom of die cavity (21) can hold flap (4), and the diameter of the bottom of die cavity (21) is than the slightly larger in diameter of the upper-end surface of flap (4); Top, valve upper body (2) has step surface (22), the top is uncovered (23) bigger than the middle part, the top is covered by valve gap (5) and into becomes cavity (24), can hold in the cavity (24) drive plate (34) and on magnetic patch or magnetic sheet (33), hold (7) by rolling under the drive plate (34) and be supported on the step surface (22).

5, according to claim 1 or the 3 or 4 described Magnetic Cooperate Globe Valves of using more, the longitudinal section that it is characterized in that above-mentioned flap (4) is " worker " word shape that central authorities have through hole (41), to form a bigger stress surface, the bottom of through hole (41) has conical step (42), step (32) on step (42) and the spool (3) matches, and through hole (41) diameter in the flap (4) is bigger than spool external diameter.

6, describedly use Magnetic Cooperate Globe Valves according to claim 3 or 4 more, it is characterized in that on drive plate (34), being provided with ball (8).

7, according to claim 1 or 2 or the 3 or 4 described Magnetic Cooperate Globe Valves of using more, it is characterized in that above-mentioned bonnet (6) covers on the valve gap (5) rotationally, hold supporting by ball with rolling between them, magnetic patch is coupled on bonnet (6) bottom and drive plate corresponding part peace and drive plate different in nature magnetic patch or magnetic sheet (61), magnetic patch (61) is consistent with the quantity and the distribution situation of magnetic patch (33).

8, describedly use Magnetic Cooperate Globe Valves according to claim 1 or 2 or 3 more, can be the conical surface between the lower bottom part that it is characterized in that above-mentioned flap (4) and the valve opening of valve lower body (1) or sphere cooperates, and between them, install a stuffing box gland (9) additional; On the fitting surface between valve lower body (1) and valve upper body (2), be equipped with seal ring (10).

9, according to claim 1ly many use Magnetic Cooperate Globe Valves, it is characterized in that having magnetic coupling material preferably selecting for use, adopt the stainless steel material making especially with above-mentioned valve upper body.

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