CN216742908U - Spherical sealing lift valve - Google Patents

Abstract

The utility model discloses a spherical sealing poppet valve, which comprises an outer shell, wherein a valve rod sealing ring is fixedly arranged at the middle position of the top end of the outer shell, a valve rod passes through the valve rod sealing ring, the top end of the valve rod is connected with a lifting mechanism, the bottom end of the valve rod is connected with a pressing piece, a spherical valve body is fixedly arranged below the pressing piece, four groups of springs are connected between the pressing piece and the spherical valve body, and a ring-shaped groove is arranged in the outer shell; after long-term operation, through error accumulation, even if the hemispherical valve body has certain inclination and offset, the valve body can still be well combined with the sealing element, and the service life of the poppet valve is prolonged; the hemispherical valve body and the dust remover interface rubber sealing ring have simple structure, practicability and reliability, the valve body and the rubber sealing piece have good connecting and sealing effects, and gas is not easy to leak; in a normal opening state, the hemispherical valve body has small resistance to the flow of the flue gas and is beneficial to the uniform distribution of a flue gas flow field.

Description

Spherical sealing poppet valve

Technical Field

The utility model relates to a poppet valve technical field specifically is a spherical sealed poppet valve.

Background

With the improvement of the requirement of the environmental protection standard, the bypass is not allowed to be arranged basically, but the condition that individual chambers are abnormal and need to be isolated and overhauled independently is inevitable in the actual operation, and the offline overhaul of a single chamber becomes a conventional requirement for reducing the influence on the operation of a main engine. The dust remover uses more off-line poppet valve effect at present is: when the dust remover normally operates and is in an open state for a long time, and a single chamber needs to be blown and overhauled and needs to be closed, the valve cover and the valve body achieve single-layer sealing through valve rod stroke limitation, the sealing effect is not tight, the installation precision requirement is high, and an air leakage field is easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spherical sealed poppet valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a spherical sealed poppet valve, includes the shell body, shell body top intermediate position department fixed mounting has valve rod seal, it has the valve rod to pass in the valve rod seal, the top of valve rod is connected with hoist mechanism, the bottom of valve rod is connected with the casting die, the below fixed mounting of casting die has spherical valve body, be connected with four group's springs between casting die and the spherical valve body, the ring channel has been seted up to the inside of shell body, fixed mounting has poppet valve sealing mechanism on the ring channel, last fixed mounting of poppet valve sealing mechanism has the rubber ring, the bottom outside fixed mounting of rubber ring has the retainer plate, the bottom intermediate position department fixed mounting of rubber ring has the snap ring.

Preferably, the poppet valve sealing mechanism comprises an outer ring, an inner ring and a convex ring, the bottom end of the inner ring is provided with a bottom ring, the inner ring and the bottom ring are integrally formed, the inner ring is inserted into the outer ring, and the bottom ring and the outer ring are fixed through screwing.

Preferably, a gap is reserved between the inner ring and the outer ring, the fixing ring is clamped between the inner ring and the outer ring, the rubber ring is sleeved on the convex ring, a groove is formed in the middle of the convex ring, and the clamping ring is clamped in the groove.

Preferably, a through hole is formed in the middle position of the top end of the rubber ring, the through hole is located in the middle position of the clamping ring, and the diameter of the spherical valve body is larger than that of the convex ring.

Preferably, the bottom end of the spherical valve body is clamped on the groove, and the spherical valve body is elastically connected with the pressing piece through four groups of springs.

Preferably, the outer ring of the outer ring is fixedly provided with a group of rubber rings, and the rubber rings are clamped in the annular groove.

Preferably, the diameter of the bottom ring is the same as that of the outer ring, the diameter of the outer ring is smaller than one centimeter of the inner diameter of the bottom end of the outer shell, and the diameter of the rubber ring is larger than two centimeters of the inner diameter of the bottom end of the outer shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. after long-term operation, through error accumulation, even if the hemispherical valve body has certain inclination and offset, the valve body can still be well combined with the sealing element, and the service life of the poppet valve is prolonged;

2. the hemispherical valve body and the dust remover interface rubber sealing ring have simple structure, practicability and reliability, the valve body and the rubber sealing piece have good connecting and sealing effects, and gas is not easy to leak;

3. in a normal opening state, the hemispherical valve body has small resistance to the flow of the flue gas and is beneficial to the uniform distribution of a flue gas flow field.

Drawings

Fig. 1 is a schematic view of the appearance structure of the present invention;

fig. 2 is a sectional view of the internal structure of the present invention;

fig. 3 is a schematic structural view of a poppet valve sealing mechanism according to the present invention;

fig. 4 is a schematic diagram of the rubber ring structure of the present invention.

In the figure: 1. an outer housing; 2. a lifting mechanism; 3. a valve stem; 4. a valve stem seal ring; 5. pressing a piece; 6. a spring; 7. a spherical valve body; 8. an annular groove; 9. a poppet valve sealing mechanism; 10. a rubber ring; 11. an outer ring; 12. a rubber ring; 13. an inner ring; 14. a convex ring; 15. a groove; 16. a bottom ring; 17. a stationary ring; 18. a snap ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution of a spherical sealing poppet valve: the utility model provides a spherical sealing poppet valve, as shown in fig. 1 to 4, including outer shell 1, outer shell 1 top intermediate position department fixed mounting has valve rod seal 4, valve rod 3 has been passed in valve rod seal 4, the top of valve rod 3 is connected with hoist mechanism 2, the bottom of valve rod 3 is connected with casting die 5, the below fixed mounting of casting die 5 has spherical valve body 7, be connected with four group's springs 6 between casting die 5 and the spherical valve body 7, ring channel 8 has been seted up to outer shell 1's inside, fixed mounting has poppet valve sealing mechanism 9 on the ring channel 8, fixed mounting has rubber ring 10 on the poppet valve sealing mechanism 9, the bottom outside fixed mounting of rubber ring 10 has retainer ring 17, the bottom intermediate position department fixed mounting of rubber ring 10 has snap ring 18.

By adopting the technical scheme, smoke enters from the bottom end of the outer shell 1 and passes through the middle of the rubber ring 10, when the lifting mechanism 2 works, the valve rod 3 is released, the valve rod 3 descends to drive the spherical valve body 7 to be in contact with the through hole on the rubber ring 10, the lifting mechanism 2 increases the pressure, so that the contact pressure between the spherical valve body 7 and the rubber ring 10 is increased, when the pressure is increased, the rubber ring 10 is in contact with the groove 15 through the snap ring 18, the sliding of the rubber ring 10 is avoided, the sealing stability is reduced, the chamber of the dust remover is isolated, the sealing effect is good, the gas is not easy to leak, after a long time, even if the spherical valve body 7 is inclined, the working pressure of the lifting mechanism 2 can be increased, so that the spherical valve body 7 is clamped with the convex ring 14, and is mutually matched with the four groups of springs 6 to correct the deviation of the spherical valve body 7, the sealing performance of the device can also be ensured, and when the rubber ring 10 is damaged, the inner ring 13 and the bottom ring 16 are detached by using a screwdriver, the rubber ring 10 is replaced, and then the replaced inner ring 13 and the replaced rubber ring 10 are installed again for use.

Specifically, as shown in fig. 3, the poppet valve sealing mechanism 9 includes an outer ring 11, an inner ring 13 and a convex ring 14, a bottom ring 16 is disposed at the bottom end of the inner ring 13, the inner ring 13 and the bottom ring 16 are integrally formed, the inner ring 13 is inserted into the outer ring 11, and the bottom ring 16 and the outer ring 11 are fixed by screwing.

Through adopting above-mentioned technical scheme, inner ring 13 and outer loop 11 can be dismantled the installation for install rubber ring 10 on poppet valve sealing mechanism 9, the bulge loop 14 that sets up is used for supporting rubber ring 10, guarantees the leakproofness of being connected with spherical valve body 7.

Specifically, as shown in fig. 2 to 4, a gap is left between the inner ring 13 and the outer ring 11, the fixing ring 17 is clamped between the inner ring 13 and the outer ring 11, the rubber ring 10 is sleeved on the protruding ring 14, a groove 15 is formed in the middle of the protruding ring 14, and the snap ring 18 is clamped in the groove 15.

Through adopting above-mentioned technical scheme, block into between inner ring 13 and the outer loop 11 through retainer plate 17, guarantee rubber ring 10 poppet valve sealing mechanism 9's joint strength, set up recess 15 and can guarantee that spherical valve body 7 aligns with bulge loop 14, and set up snap ring 18, then under the long-term contact of spherical valve body 7 and rubber ring 10, guarantee the intensity of rubber ring 10.

Specifically, as shown in fig. 2 and 4, a through hole is formed in the middle position of the top end of the rubber ring 10, the through hole is located in the middle position of the snap ring 18, and the diameter of the spherical valve body 7 is larger than that of the convex ring 14.

Through adopting above-mentioned technical scheme, guarantee spherical valve body 7 and rubber ring 10 contact, cover the through-hole completely, guarantee the sealing performance of device.

Specifically, as shown in fig. 2 and 3, the bottom end of the spherical valve body 7 is clamped on the groove 15, and the spherical valve body 7 is elastically connected with the pressing piece 5 through four groups of springs 6.

Through adopting above-mentioned technical scheme, spherical valve body 7 and recess 15 block are injectd the position of spherical valve body 7, and when slope skew appears in spherical valve body 7, usable four group's springs 6 and through increasing 2 operating pressure of hoist mechanism, guarantee that spherical valve body 7 covers the through-hole of rubber ring 10 completely to recess 15 accurate block.

Specifically, as shown in fig. 2, a set of rubber rings 12 is fixedly mounted on the outer ring of the outer ring 11, and the rubber rings 12 are clamped into the annular groove 8.

Through adopting above-mentioned technical scheme, set up rubber circle 12 when poppet valve sealing mechanism 9 and shell body 1 contact, guarantee the gas tightness, when poppet valve sealing mechanism 9 goes wrong, can conveniently change poppet valve sealing mechanism 9 simultaneously.

Specifically, as shown in fig. 1, the diameter of the bottom ring 16 is the same as that of the outer ring 11, the diameter of the outer ring 11 is one centimeter smaller than the inner diameter of the bottom end of the outer casing 1, and the diameter of the rubber ring 12 is two centimeters larger than the inner diameter of the bottom end of the outer casing 1.

Through adopting above-mentioned technical scheme, conveniently install poppet valve sealing mechanism 9 to the inside of shell body 1, guarantee the gas tightness of device simultaneously.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A spherical sealed poppet valve comprising an outer housing (1), characterized in that: a valve rod sealing ring (4) is fixedly arranged at the middle position of the top end of the outer shell (1), a valve rod (3) penetrates through the valve rod sealing ring (4), the top end of the valve rod (3) is connected with a lifting mechanism (2), the bottom end of the valve rod (3) is connected with a pressing piece (5), a spherical valve body (7) is fixedly arranged below the pressing piece (5), four groups of springs (6) are connected between the pressing piece (5) and the spherical valve body (7), an annular groove (8) is formed in the outer shell (1), a poppet valve sealing mechanism (9) is fixedly arranged on the annular groove (8), a rubber ring (10) is fixedly arranged on the poppet valve sealing mechanism (9), a fixing ring (17) is fixedly arranged on the outer side of the bottom end of the rubber ring (10), and a snap ring (18) is fixedly arranged at the middle position of the bottom end of the rubber ring (10).

2. A spherical sealing poppet valve as defined in claim 1, wherein: the poppet valve sealing mechanism (9) comprises an outer ring (11), an inner ring (13) and a convex ring (14), wherein a bottom ring (16) is arranged at the bottom end of the inner ring (13), the inner ring (13) and the bottom ring (16) are integrally formed, the inner ring (13) is inserted into the outer ring (11), and the bottom ring (16) and the outer ring (11) are fixed through screwing.

3. A spherical sealing poppet valve as defined in claim 2, wherein: leave between inner ring (13) and outer loop (11) and have the space, retainer plate (17) card is gone into between inner ring (13) and outer loop (11), rubber ring (10) cover is on bulge loop (14), the intermediate position department of bulge loop (14) sets up fluted (15), snap ring (18) card is gone into in recess (15).

4. A spherical sealing poppet valve as defined in claim 1, wherein: the middle position of the top end of the rubber ring (10) is provided with a through hole, the through hole is positioned in the middle position of the snap ring (18), and the diameter of the spherical valve body (7) is larger than that of the convex ring (14).

5. A ball seal poppet valve as defined in claim 1, wherein: the bottom end of the spherical valve body (7) is clamped on the groove (15), and the spherical valve body (7) is elastically connected with the pressing piece (5) through four groups of springs (6).

6. A spherical sealing poppet valve as defined in claim 2, wherein: the outer ring of outer ring (11) fixed mounting has a set of rubber circle (12), rubber circle (12) card is gone into in ring channel (8).

7. The spherical sealing poppet valve of claim 6, wherein: the diameter of the bottom ring (16) is the same as that of the outer ring (11), the diameter of the outer ring (11) is smaller than one centimeter of the inner diameter of the bottom end of the outer shell (1), and the diameter of the rubber ring (12) is larger than two centimeters of the inner diameter of the bottom end of the outer shell (1).

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