CN201751637U

CN201751637U - Electro-magnetic two-way sealing stop valve

Info

Publication number: CN201751637U
Application number: CN2010202290237U
Authority: CN
Inventors: 陈国顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-18
Filing date: 2010-06-18
Publication date: 2011-02-23
Anticipated expiration: 2020-06-18

Abstract

The utility model relates to an electro-magnetic two-way sealing stop valve which comprises a valve body and an electro-magnetic head, and a hollow cavity of the valve body consists of a right cavity, a middle cavity, an upper cavity and a left cavity; the hollow cavity of the valve body is internally provided with an upper valve seat and a lower valve seat distributed vertically; the upper valve seat is arranged between the upper cavity and the middle cavity; the lower valve seat is arranged between the middle cavity and the left cavity; a valve clack is shaped like an inverted cup and is provided with a lower through hole for being connected with the left cavity and an upper through hole for being connected with the upper cavity; the valve clack is provided with an upper sealing piece, a lower sealing piece and a pressure spring which is used for pressing the lower sealing piece down; the upper sealing piece and the lower sealing piece form an upper sealing pair and a lower sealing pair respectively with the upper valve seat and the lower valve seat; and a movable iron core of the electro-magnetic head is connected with the valve clack by a valve rod. The stop valve can be used in a two-way manner, and is mainly used for a conveying system of various industrial fluid mediums.

Description

Electromagnetism moves the two way sealed stop valve

Technical field

The utility model relates to the moving two way sealed stop valve of a kind of electromagnetism, mainly can be used for the transporting system of various industrial fluids media.

Background technique

Referring to Fig. 2, have now and be used for a kind of solenoid valve of industrial occasions mainly by valve body, flap 30, guide sleeve 40.5, valve rod 50 and Electrical heads are formed, described Electrical heads is provided with moving iron core 63, static iron core 65 and coil 64 etc., described coil peripheral hardware has coil case, the central authorities of coil are provided with plunger tube 62, described static iron core is fixedly mounted on the top of plunger tube, moving iron core and plunger tube Spielpassung, so that move up and down, described plunger tube is fixed on the plunger tube seat 61, the plunger tube seat be fixedly mounted on valve body above, realized installing and fixing of Electrical heads thus, when coil electricity, coil case, static iron core, moving iron core, valve rod, plunger tube seat and the connection spring or the magnetic conductive part that are used to connect between plunger tube seat and the coil case have constituted field circuit, magnetic field is passed moving, gap between the static iron core, moving, produce suction between the static iron core, moving iron core moves up and then drives the valve rod Open valve, described valve body is made up of valve body main body 21 and the valve gap 22 that is installed on the valve body main body, be provided with in the described valve body by right chamber 15, lumen 12 and left chamber 11 are communicated with the cavity that forms successively, described cavity constitutes the main valve medium channel, described right chamber is the inducer of main valve medium channel, the right mouth of pipe through valve body connects inlet tube, described left chamber is the outlet section of main valve medium channel, the left mouth of pipe through valve body connects outer pipe, described lumen be positioned at described left chamber in section 11.1 top, the main valve seat 40.1 of level is installed between described lumen and the left chamber, described main valve seat is provided with the main valve seat sealing surface of annular, it is vertical that described guide sleeve is, be fixedly mounted in the described lumen, its part outer surface and described middle inner cavity surface cooperatively interact, and by modes such as corresponding sealing material or drive fit realize the sealing, described flap is cup-shaped, its bottom surface is provided with main valve Sealing 40.2, the bottom of its sidewall or its bottom are provided with damping hole, described damping hole be positioned at the main valve Sealing the outside, the medium that enters lumen thus just can enter cavity 13 in the described flap by described damping hole without the main valve sealing pair, the outer side surface of described flap is with the inner side surface Spielpassung of described guide sleeve, allow flap easy on and off under the qualification of guide sleeve to move thus, described main valve Sealing is relative up and down with sealing surface on the main valve seat, form the main valve sealing pair, in order at valve closing time sealing main valve medium channel, the bottom surface diameter of described flap is greater than the annular sealing surface diameter of described main valve seat, the medium that enters lumen thus can impose the part that exceeds the main valve seat sealing surface in the flap bottom surface and upward pressure, the inner end in described right chamber is communicated with described lumen from the right side of described lumen, the secondary valve seal pair that also is provided with secondary valve medium channel on the described valve body and is used to seal described secondary valve medium channel, one end of described secondary valve medium channel connects the top 15.1 of described lumen, the other end is communicated with described left chamber, described secondary valve seal pair is made up of secondary valve seal 40.4 and auxiliary-seat 40.3, described auxiliary-seat level is installed on the wall of described secondary valve medium channel, described secondary valve seal is installed in the lower end of valve rod, be positioned at the top of described auxiliary-seat, described valve rod is connected in the mode that allows described valve rod to move up and down with described valve body, the upper end of described valve rod can connect the moving iron core of Electrical heads, can drive by Electrical heads and move up the unlatching of realization valve.

During valve closing, the Electrical heads outage, moving, suction between the static iron core disappears, under effects such as spring pressure and deadweight, described valve rod and secondary valve seal together move down, touch sealing surface on the described auxiliary-seat until the sealing surface of described secondary valve seal, rely on that valve rod brings and/or the sealing surface on the secondary valve seal is pressed on together mutually with the sealing surface on the auxiliary-seat by the downward pressure (for example deadweight of valve rod) that its mode obtains, close secondary valve medium channel, at this moment the medium in the right chamber still can continue to flow into the cavity in the described flap by the damping hole on the flap, because secondary valve medium channel is closed, the medium that flows in the flap can't flow out, through certain hour, pressure medium in the cavity in the described flap increases to certain value, under the effect of pressure medium in flap and flap deadweight, flap moves down, touch sealing surface on the described main valve seat until the sealing surface of described main valve Sealing, seal described main valve medium channel, pressure medium in the flap can continue to raise subsequently, until with right chamber in the pressure medium balance, rely on this pressure medium, guaranteed the reliability and the validity of valve closing.

During valve opening, coil electricity, moving iron core is attracted to move up by static iron core, driving secondary valve seal by valve rod moves up, secondary valve seal and auxiliary-seat are separated from each other, open secondary valve medium channel, medium in the flap flows into left chamber through secondary valve medium channel, since the resistance of damping hole much larger than secondary valve medium channel resistance, pressure medium in the flap reduces gradually, after the pressure medium in the flap is reduced to a certain degree, flap overcomes deadweight under the effect of inside and outside pressure medium difference and moving resistance moves up, and main valve Sealing and main valve seat are separated from each other, and opens the main valve medium channel, thereafter flap can be stabilized under the equilibrium position, keeps the opening state of main valve medium channel.

The defective of this existing valve is unidirectionally to use.If the left mouth of pipe of valve is connected inlet pipeline, the medium that enters left chamber is divided into two-way, lead up to left chamber flow directly to main valve seat below, another road by the secondary valve medium channel that connects left chamber and connect flow to auxiliary-seat below, secondary valve seal imposed upward pressure, secondary valve seal is upwards pushed away, open auxiliary valve seal pair, medium flows into the interior space of flap through secondary valve medium channel, through certain hour, the pressure medium in the flap equates substantially with the pressure medium of flap below, flap can't be pressed to the main valve sealing seat, cause the main valve sealing pair to lose efficacy, the medium in chamber, a left side enters lumen through the center through hole of main valve seat, and then the outflow of right chamber, and the medium in the flap also can flow into right chamber by damping hole simultaneously, therefore connect under the situation of inlet pipeline at the left mouth of pipe, valve can't be closed effectively.

The model utility content

In order to address the above problem, the utility model provides a kind of electromagnetism to move the two way sealed stop valve, and this solenoid valve can two-wayly use, and connects intake pipe with arbitrary mouth of pipe and can realize effectively and reliably closing.

The technical solution of the utility model is:

A kind of electromagnetism moves the two way sealed stop valve, comprise valve body, flap, valve rod and Electrical heads, described valve body is made up of valve body main body and the valve gap that is installed on the described valve body main body, described valve body is provided with by right chamber, lumen, the valve cavity that epicoele and left chamber constitute, the inner end in described right chamber connects the side of described lumen, described epicoele is positioned at the top of described lumen, its lower end is connected with the upper end of described lumen, described lumen be positioned at described left chamber in the section the top, its lower end is connected with section in the described left chamber, the upper valve base and the lower valve base that distribute up and down are installed in the described valve cavity, described upper valve base ringwise, between described epicoele and lumen, its center through hole constitutes the passage that is communicated with described lumen and epicoele, described lower valve base ringwise, between described lumen and described left chamber, its center through hole constitutes the passage that is communicated with described lumen and described left chamber, described flap is down cup-shaped, be provided with lower through-hole and last through hole, the lower through-hole of described flap is arranged on the bottom of described flap, the last through hole of described flap is set in place on the wall of the flap in described epicoele, described flap is provided with Sealing, lower seal and with it to the holddown spring that presses down, the sealing surface of described upward Sealing ringwise, be oppositely arranged up and down with the sealing surface of described upper valve base, go up sealing pair common the composition, the sealing surface of described lower seal ringwise, be oppositely arranged up and down with the sealing surface of described lower valve base, the common lower seal pair of forming, the upper end of described flap is connected with the lower end of described valve rod, the outer end in described right chamber is the right mouth of pipe, the outer end in described left chamber is the left mouth of pipe, described Electrical heads comprises coil, plunger tube, moving iron core and static iron core, described coil is positioned at the coil case of Electrical heads, be provided with center through hole, described plunger tube is installed in the mesopore of described coil, its lower ends downward is extended the mesopore of described coil, and be fixedly mounted on the plunger tube seat, described static iron core is installed in the top of described plunger tube, described moving iron core is positioned at described static iron core below, the inner side surface Spielpassung of its outer side surface and described plunger tube, its lower end connects described valve rod, and described plunger tube seat is fixedly mounted on the top of described valve body.

Working procedure of the present utility model is:

During valve closing, cut off the electric current of Electrical heads coil, suction between moving iron core and the static iron core disappears, valve rod and flap move down under effects such as holddown spring and deadweight, contact with sealing surface on described lower valve base and the upper valve base respectively until the sealing surface on described lower seal and the last Sealing, under the effect of holddown spring, the sealing surface of upper and lower Sealing is pressed on respectively on the sealing surface of upper and lower valve seat, closes medium channel.At this moment, if the right chamber of valve connects inlet pipeline, medium flows into the lumen in the flap outside by right chamber, for last sealing pair, medium in the lumen imposes flap and upwards pressure, for lower seal is secondary, medium in the lumen imposes downward pressure to flap, last, the latus rectum of lower seal pair equate or situation about equally under, medium to flap make a concerted effort also equate or about equally, therefore on, the extruding force of lower seal pair is not subjected to the influence of pressure medium, relies on suitable holddown spring can realize reliably and effectively realizing closing of valve; If the left chamber of valve connects inlet pipeline, medium by the import of left chamber enter left chamber in the section, and the inner chamber that can pass flap flows into epicoele, the medium of epicoele imposes downward pressure to flap for last sealing pair, the medium of section imposes flap for lower seal is secondary and upwards pressure in the chamber, a left side, the latus rectum of upper and lower sealing pair equate or about equally situation under, medium to flap make a concerted effort also equate or about equally, rely on suitable holddown spring can realize reliably and effectively realizing closing of valve.Therefore, valve closes the influence that is not subjected to valve connecting direction with keeping of closed condition.

During valve opening, the closing coil electric current produces suction between static iron core and the moving iron core, attracts moving iron core to move up, and moving iron core drives valve rod and flap moves up, and upper and lower sealing pair is opened.No matter medium entered from right chamber or entered from left chamber this moment, medium all is a balance to the active force of flap.Therefore, the unlatching of valve and opening state keeps the influence that also is not subjected to valve connecting direction.

The beneficial effects of the utility model are: the opening and closing of valve are not subjected to the influence of connecting direction, therefore can either direction use.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is to the structural representation of background technique.

Embodiment

Referring to Fig. 1, the moving two way sealed stop valve of the electromagnetism that the utility model provides comprises Electrical heads and valve body two-part, wherein said Electrical heads is provided with moving iron core 63, static iron core 65 and coil 64 etc., described coil peripheral hardware has coil case 66, the central authorities of coil are provided with plunger tube 62, described static iron core is fixedly mounted on the top of plunger tube, moving iron core and plunger tube Spielpassung, so that move up and down, described plunger tube is fixed on the plunger tube seat 61, the plunger tube seat be fixedly mounted on valve body above, realized installing and fixing of Electrical heads thus.For forming complete magnetic loop, can make described plunger tube seat directly connect described coil case according to prior art, perhaps connection spring or other magnetic conductive parts by magnetic conductivity connects described coil case connection.When coil electricity, coil case, static iron core, moving iron core, valve rod, plunger tube seat and the connection spring or the magnetic conductive part that are used to connect between plunger tube seat and the coil case have constituted field circuit, the gap between the dynamic and static iron core is passed in magnetic field, produce suction between dynamic and static iron core, moving iron core moves up and then drives the valve rod Open valve.

Described valve body comprises valve body, flap and valve rod 50, described valve body is made up of valve body main body 21 and the valve gap that is installed on the described valve body main body, described valve body is provided with by right chamber 15, lumen 12, the valve cavity that epicoele 14 and left chamber 11 constitute, the inner end in described right chamber connects the side of described lumen, described epicoele is positioned at the top of described lumen, its lower end is connected with the upper end of described lumen, described lumen be positioned at described left chamber in section 11.1 top, its lower end is connected with section in the described left chamber, the upper valve base 43 and the lower valve base 41 that distribute up and down are installed in the described valve cavity, described upper valve base ringwise, between described epicoele and lumen, its center through hole constitutes the passage that is communicated with described lumen and epicoele, described lower valve base ringwise, between described lumen and described left chamber, its center through hole constitutes the passage that is communicated with described lumen and described left chamber, described flap is down cup-shaped, be provided with lower through-hole 36 and last through hole 37, the lower through-hole of described flap is arranged on the bottom of described flap, the last through hole of described flap is set in place on the wall of the flap in described epicoele, described flap is provided with Sealing 44, lower seal 42 and with it to the holddown spring 45 that presses down, the sealing surface of described upward Sealing ringwise, be oppositely arranged up and down with the sealing surface of described upper valve base, go up sealing pair common the composition, the sealing surface of described lower seal ringwise, be oppositely arranged up and down with the sealing surface of described lower valve base, the common lower seal pair of forming, the upper end of described flap is connected with the lower end of described valve rod, the outer end in described right chamber is the right mouth of pipe 23.1, and the outer end in described left chamber is the left mouth of pipe 23.2.

Usually, the coaxial distribution up and down of described upper valve base and lower valve base is to guarantee stressed equilibrium.

The last through hole of described flap can be arranged on the sidewall on described flap top usually.Described setting of going up the particular location of through hole should guarantee to move up and down in the process at flap, and the described through hole of going up is positioned at described epicoele all the time.

The described quantity that goes up through hole can be one or more, and described a plurality of through holes of going up can adopt the mode of symmetrical distribution to distribute.

Spacing between the sealing surface of described upper and lower Sealing should equal the spacing between the sealing surface of described upper and lower valve seat usually, can be implemented in thus in the process that flap moves up and down, and described upper and lower sealing pair seals simultaneously, opens simultaneously.

The set-up mode of described upper valve base and lower valve base can be: the inwall of described valve body is provided with radially inwardly protruded ring platform 33.2 and the following ring platform 33.1 gone up, the described ring platform of going up is between described epicoele and described lumen, and the described platform of ring down is between in described lumen and the described left chamber section.Described upper and lower valve seat can be the part that is independent of described upper and lower ring platform, be fixedly mounted on respectively on the described upper and lower ring platform, be preferably mounted at the position, inside edge of the upper surface of described upper and lower ring platform, help processing and installation like this, and help the structural distribution of other parts.Described upper and lower valve seat also can be the described upper and lower ring playscript with stage directions body part of described upper and lower ring platform in other words conj.or perhaps, promptly on the relevant position of described upper and lower ring platform, form the sealing surface of corresponding upper and lower valve seat by machining, built-up welding or other modes, in this case, described upper and lower ring platform and described upper and lower valve seat are actually and can not distinguish.

Usually, described upper and lower sealing pair adopts identical structure or identical parameter, particularly relates to the structure and parameter of pressure medium aspect.For example, the valve opening of described upper valve base and lower valve base (being the center through hole of valve seat) aperture equates or is similar.Guaranteed that thus medium imposes on the pressure equal and opposite in direction of flap or similar with respect to upper and lower sealing pair, direction is opposite.The valve opening aperture of alleged upper valve base and lower valve base is similar, be meant that the medium that is caused by these two pore size differences is less to the pressure difference up and down of flap, can not hinder the opening and closing of valve, and whether hinder the opening and closing of valve, can detect according to the relevant performance of prior art means, require and/or whether meet the normal usage requirement of valve with the corresponding index that judges whether to meet valve valve.

The mounting type of described upper and lower Sealing can be: the outside of described flap is installed with one and goes up flap 31, described upward flap ringwise, be enclosed within the outside of described flap, its lower end surface is provided with and is used to install the described embedding slot of going up Sealing, the described Sealing of going up is fixedly mounted on described going up on the flap by this embedding slot, the bottom surface of described flap is provided with the embedding slot that is used to install described lower seal, and described lower seal is fixedly mounted on the described flap by this embedding slot.The position of described upper and lower Sealing should guarantee that when flap moves down into closed position the sealing surface of described upper and lower Sealing contacts with the sealing surface of described upper and lower valve seat respectively just, realizes the sealing of upper and lower sealing pair.

The profile of described flap usually can be stepped cylindricality, comprise epimere 30.3, stage casing 30.2 and hypomere 30.1 that diameter increases successively, the outer side surface of described hypomere is with the described inner side surface Spielpassung that goes up the ring platform, the following guide structure when constituting described flap thus and moving up and down.

The lower end of described flap can be provided with the lower protruding edge 30.4 of an annular usually, the diameter of described lower protruding edge is greater than the diameter of the sealing surface of described lower valve base, its bottom surface constitutes the part of described flap bottom surface, thus described lower seal is inlaid on the bottom surface of described valve seat, the sealing surface that can make described lower seal is just corresponding to the sealing surface of described lower valve base.

The bottom of described flap can be provided with a central screw, be connected with a hold-down bolt 36.1 that is provided with center through hole on the described central screw, be with one or more ring segments 36.2 on the described hold-down bolt, the external diameter of described ring segment is greater than the internal diameter of described lower seal, the inner circumference edge regions of described lower seal can be pushed down thus, realize the fixing of described lower seal, the center through hole of described bolt constitutes the lower through-hole of described flap, allow thus described left chamber in the medium of section enter the inner chamber of described flap by this through hole.

The described mounting type of going up flap can be: described upward flap is enclosed within the stage casing of described flap, its lower end surface contacts with the top end face of described flap hypomere, the stage casing of described flap also is connected with Sealing gland nut 32 and last Sealing lock nut 33, the described Sealing gland nut of going up is pressed on described top of going up flap, described lock nut is pressed on the top of described gland nut, thus described upward flap and the described Sealing of going up are tightly clamped, realize described fixing and location of going up flap and last Sealing, and can avoid gland nut loosening effectively.

For ease of installing, described flap stage casing is divided into three segments in upper, middle and lower, and the external diameter of described upper, middle and lower three segments strengthens successively, and described middle segment is provided with and is used to spin described Sealing gland nut and the described outside thread of going up the Sealing lock nut gone up.

Can be provided with the locating shoulder of annular on the outer side surface of described upward flap, the external diameter on described locating shoulder top is less than the external diameter of bottom, the preferred helical spring of described holddown spring, described helical spring is enclosed within the stage casing of described flap, its upper end contacts with the upper wall of described epicoele, the lower end contacts with the end face of described locating shoulder, keeps compressive state thus, and applies comparatively constant downward pressure to described flap.

The epimere of described flap is with the positioning ring 34 of annular and is connected with the clamping sleeve 35 that is pressed in above the described positioning ring, the upper-end surface of described positioning ring contacts with the lower end surface of described clamping sleeve, the lower end surface contacts with the top end face in described flap stage casing, by clamping sleeve described positioning ring is fixed, the inwall Spielpassung of the outer side surface of described positioning ring and described valve body, the last guide structure when constituting described flap thus and moving up and down.By described upward guide structure and described cooperatively interacting of guide structure down, can prevent effectively that swinging and rocking from appearring in described flap when moving up and down.

Described clamping sleeve can be down cup-shaped, its top is provided with center through hole, described valve rod passes the center through hole at described clamping sleeve top, its lower end is the head 51 of valve rod, extend in the described clamping sleeve, the maximum transverse size of the head of described valve rod is greater than the size of the center through hole at described clamping sleeve top, usually can spherical in shape or hemisphere, the head of described valve rod can be limited in the described clamping sleeve thus, and then can drive described clamping sleeve and described flap moves up and down by described valve rod.

Adopt flange to connect between described valve body main body and the valve gap, described valve gap is the stereochemical structure that has cavity, is fixedly mounted on the described valve body main body by the flange mode, and the cavity in the described valve gap has constituted described epicoele, the bottom surface of described valve gap constitutes the described ring platform of going up, and is provided with center through hole.

Described valve gap can be made up of the loam cake 22.1 and the lower cover 22.2 of mutual butt joint, the plane of the described epicoele sidewall of its mutual interface 22.3 preferred crosscuts, so that processing and install, be used on the described valve gap being arranged on and cover on described with described valve body main body flange 21.1 flange connecting 22.4.

The top of described valve body main body is the connecting part 23 that combines with described valve gap, in a tubular form, its top is provided with and described valve gap flange connecting, the lower end of the inwall of described connecting part is provided with radially inwardly protruded limited ring dais, the low profile of described valve gap is for being cylindricality, be inserted in the described connecting part, its lower end contacts with described annular stop boss, to realize the location.

When described valve gap was divided into the loam cake of mutual butt joint and lower cover, the mutual interface of described loam cake and lower cover should be positioned at described connecting part usually, by described loam cake described lower cover is compressed.

Can be provided with O-ring seal between the outer surface of described valve gap and the described connecting part inwall, be used to seal up the gap between described valve gap and the described connecting part, avoid medium to reveal.

Be understandable that, according to the requirement that prevents that medium from revealing, can also according to prior art between other corresponding fitting surfaces or other suitable position sealing materials such as seal ring are set, to realize sealing.

The word in statement orientation such as " left side " that relates in this specification and " right side ", just to the facility of explaining, different orientation is made a distinction, be not used in the true bearing that limits the valve corresponding construction, also being not used in and limiting corresponding mutually " left side ", " right side " must be opposite both direction.

Claims

1. an electromagnetism moves the two way sealed stop valve, comprise valve body, flap, valve rod and Electrical heads, described valve body is made up of valve body main body and the valve gap that is installed on the described valve body main body, it is characterized in that described valve body is provided with by right chamber, lumen, the valve cavity that epicoele and left chamber constitute, the inner end in described right chamber connects the side of described lumen, described epicoele is positioned at the top of described lumen, its lower end is connected with the upper end of described lumen, described lumen be positioned at described left chamber in the section the top, its lower end is connected with section in the described left chamber, the upper valve base and the lower valve base that distribute up and down are installed in the described valve cavity, described upper valve base ringwise, between described epicoele and lumen, its center through hole constitutes the passage that is communicated with described lumen and epicoele, described lower valve base ringwise, between described lumen and described left chamber, its center through hole constitutes the passage that is communicated with described lumen and described left chamber, described flap is down cup-shaped, be provided with lower through-hole and last through hole, the lower through-hole of described flap is arranged on the bottom of described flap, the last through hole of described flap is set in place on the wall of the flap in described epicoele, described flap is provided with Sealing, lower seal and with it to the holddown spring that presses down, the sealing surface of described upward Sealing ringwise, be oppositely arranged up and down with the sealing surface of described upper valve base, go up sealing pair common the composition, the sealing surface of described lower seal ringwise, be oppositely arranged up and down with the sealing surface of described lower valve base, the common lower seal pair of forming, the upper end of described flap is connected with the lower end of described valve rod, the outer end in described right chamber is the right mouth of pipe, the outer end in described left chamber is the left mouth of pipe, described Electrical heads comprises coil, plunger tube, moving iron core and static iron core, described coil is positioned at the coil case of Electrical heads, be provided with center through hole, described plunger tube is installed in the mesopore of described coil, its lower ends downward is extended the mesopore of described coil, and be fixedly mounted on the plunger tube seat, described static iron core is installed in the top of described plunger tube, described moving iron core is positioned at described static iron core below, the inner side surface Spielpassung of its outer side surface and described plunger tube, its lower end connects described valve rod, and described plunger tube seat is fixedly mounted on the top of described valve body.

2. electromagnetism as claimed in claim 1 moves the two way sealed stop valve, it is characterized in that the coaxial distribution up and down of described upper valve base and lower valve base, the lower through-hole of described flap is arranged on the bottom of described flap, connect described left chamber in the section, the last through hole of described flap is arranged on the sidewall on described flap top, be positioned at described epicoele, the described quantity that goes up through hole is one or more, spacing between the sealing surface of described upper and lower Sealing equals the spacing between the sealing surface of described upper and lower valve seat, and the valve opening aperture of described upper valve base and described lower valve base equates or be similar.

3. electromagnetism as claimed in claim 2 moves the two way sealed stop valve, the set-up mode that it is characterized in that described upper valve base and lower valve base is: the inwall of described valve body is provided with the radially inwardly protruded Huan Tai of going up and encircles platform down, the described ring platform of going up is between described epicoele and described lumen, the described platform of ring down is between in described lumen and the described left chamber section, on described, lower valve base be respectively be independent of described on, encircle the part of platform down, perhaps be respectively described on, encircle the part of platform down, described being independent of, encircle down platform on, bottom sealing socket be fixedly mounted on respectively described on, under encircle on the platform.

4. electromagnetism as claimed in claim 3 moves the two way sealed stop valve, the mounting type that it is characterized in that described upper and lower Sealing is: the outside of described flap is installed with one and goes up flap, described upward flap ringwise, be enclosed within the outside of described flap, its lower end surface is provided with and is used to install the described embedding slot of going up Sealing, the described Sealing of going up is fixedly mounted on described going up on the flap by this embedding slot, the bottom surface of described flap is provided with the embedding slot that is used to install described lower seal, and described lower seal is fixedly mounted on the described flap by this embedding slot.

5. electromagnetism as claimed in claim 4 moves the two way sealed stop valve, the stepped cylindricality of profile that it is characterized in that described flap, comprise the epimere that diameter increases successively, stage casing and hypomere, the outer side surface of described hypomere is with the described inner side surface Spielpassung that goes up the ring platform, the lower end of described flap is provided with the lower protruding edge of an annular, the diameter of described lower protruding edge is greater than the diameter of the sealing surface of described lower valve base, its bottom surface constitutes the part of described flap bottom surface, the bottom of described flap is provided with a central screw, be connected with a hold-down bolt that is provided with center through hole on the described central screw, be with one or more ring segments on the described hold-down bolt, the external diameter of described ring segment is greater than the internal diameter of described lower seal, the inner circumference edge regions of described lower seal is pushed down, and the center through hole of described bolt constitutes the lower through-hole of described flap.

6. electromagnetism as claimed in claim 5 moves the two way sealed stop valve, it is characterized in that the described mounting type of going up flap is: described upward flap is enclosed within the stage casing of described flap, its lower end surface contacts with the top end face of described flap hypomere, the stage casing of described flap also is connected with Sealing gland nut and last Sealing lock nut, the described Sealing gland nut of going up is pressed on described top of going up flap, and described lock nut is pressed on the top of described gland nut.

7. electromagnetism as claimed in claim 6 moves the two way sealed stop valve, it is characterized in that described flap stage casing is divided into, in, following three segments, on described, in, the external diameter of three segments strengthens successively down, segment is provided with and is used to spin described Sealing gland nut and the described outside thread of going up the Sealing lock nut gone up in described, the described outer side surface of going up flap is provided with the locating shoulder of annular, the external diameter on described locating shoulder top is less than the external diameter of bottom, described holddown spring is a helical spring, be enclosed within the stage casing of described flap, its upper end contacts with the upper wall of described epicoele, and the lower end contacts with the end face of described locating shoulder.

8. electromagnetism as claimed in claim 7 moves the two way sealed stop valve, the epimere that it is characterized in that described flap is with the positioning ring of annular and is connected with the clamping sleeve that is pressed in above the described positioning ring, the upper-end surface of described positioning ring contacts with the lower end surface of described clamping sleeve, the lower end surface contacts with the top end face in described flap stage casing, the inwall Spielpassung of the outer side surface of described positioning ring and described valve body.

9. electromagnetism as claimed in claim 8 moves the two way sealed stop valve, it is characterized in that described clamping sleeve is down cup-shaped, its top is provided with center through hole, described valve rod passes the center through hole at described clamping sleeve top, its lower end is the head of valve rod, extend in the described clamping sleeve, the maximum transverse size of the head of described valve rod is greater than the size of the center through hole at described clamping sleeve top, adopt flange to connect between described valve body main body and the valve gap, described valve gap is the stereochemical structure that has cavity, be fixedly mounted on the described valve body main body by the flange mode, cavity in the described valve gap has constituted described epicoele, the bottom surface of described valve gap is provided with center through hole, constitutes the described ring platform of going up.

10. electromagnetism as claimed in claim 9 moves the two way sealed stop valve, it is characterized in that described valve gap is made up of the loam cake and the lower cover of mutual butt joint, its mutual interface is the plane of the described epicoele sidewall of crosscut, be used on the described valve gap being arranged on and cover on described with described valve body main body flange flange connecting, the top of described valve body main body is the connecting part that combines with described valve gap, described connecting part in a tubular form, the top is provided with and described valve gap flange connecting, the lower end of the inwall of described connecting part is provided with radially inwardly protruded limited ring dais, the low profile of described valve gap is for being cylindricality, be inserted in the described connecting part, its lower end contacts with described annular stop boss, and the mutual interface of described loam cake and lower cover is positioned at described connecting part.