CN105402418A

CN105402418A - Angular regulating valve

Info

Publication number: CN105402418A
Application number: CN201410467981.0A
Authority: CN
Inventors: 汪新春; 张�杰; 高峰峰
Original assignee: Jiangsu Shentong Valve Co Ltd
Current assignee: Jiangsu Shentong Valve Co Ltd
Priority date: 2014-09-16
Filing date: 2014-09-16
Publication date: 2016-03-16

Abstract

The invention discloses an angular regulating valve. The angular regulating valve comprises a valve body, a valve deck, connecting pipes, a valve seat and a valve rod. The valve seat is composed of a valve seat lining and an outer valve seat sleeve. The valve seat lining is fixedly connected with the outer valve seat sleeve. A boss is arranged on the outer side face of the outer valve seat sleeve. The boss is embedded into an installation groove and sealed through a sealing member. A valve element head is arranged at the lower end of the valve rod. The valve rod penetrates through the valve deck and a guide sleeve. The valve element head of the end of the valve rod extends into the valve seat and is matched with the sealing face of the valve seat lining. The upper end face of the valve seat lining extends to and abuts against the lower end face of the guide sleeve. Flow guiding holes are formed in the part, located in a valve body inner cavity, of the valve seat lining. The angular regulating valve has the beneficial effects that the impact force on the valve rod and the valve element head of a medium is greatly reduced through the flow guiding hole structure, and the impact on a transverse plate of the medium is relieved at the same time; the valve rod, the valve element head and the transverse plate are prevented from cracking, and the service life is prolonged.

Description

A kind of Corniform regulating valve

Art

The present invention relates to a kind of modulating valve, particularly a kind of Corniform regulating valve.

Background technique

The Corniform regulating valve applying working condition that Coal Chemical Industry gasifying furnace device is applied is harsh, flowing medium is mainly the high Heisui River of solid content, pulp water and buck, containing strong corrosive media and solid particles such as chlorion, ammonia, sylvite, hydrogen sulfide or phosphoric acid, easy generation whirlpool, flash distillation and erosion phenomenon, and under the intense impact of medium, valve rod easily produces vibration, even ruptures.

Its guide sleeve of traditional modulating valve is embedded in valve gap, and valve core head, away from guide sleeve, once pressure reduction larger generation vibration & noise, can cause valve core head or valve stem crack; Now conventional modulating valve improves on the basis of traditional modulating valve, by in the middle of valve body, horizontal version is set, fixed guide cover on transverse slat, such structure make valve core head from guide sleeve more close to, the guidance quality of its valve rod is better, stability is higher, but because transverse slat occupies the space of inner chamber, the velocity of medium of body cavity is relatively very fast, thus the transverse slat in valve body and valve rod can be caused impact by swiftly flowing medium and occur the phenomenons such as valve body inner horizontal plate washes out, guide sleeve disengaging, valve stem crack.

Summary of the invention

In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of effective protection valve rod and valve core head from the Corniform regulating valve impacted.

The technical solution adopted for the present invention to solve the technical problems is, a kind of Corniform regulating valve, comprise valve body, valve gap, adapter, valve seat, valve rod, valve gap is fixedly mounted on valve body upper end, adapter is fixedly mounted on valve body lower end, the inner chamber of valve body arranges transverse slat, transverse slat is fixedly connected with guide sleeve by pressing plate, the surface of contact of valve body and adapter arranges mounting groove, valve seat is made up of valve seat liner and valve seat overcoat, valve seat liner is fixedly connected with valve seat overcoat, valve seat overcoat outer side surface boss is set, boss is inlaid in mounting groove, and sealed by Sealing, valve rod underpart arranges valve core head, valve rod runs through valve gap and guide sleeve, the valve core head of its end to stretch in valve seat and matches with the sealing surface of valve seat liner, valve seat liner upper-end surface extends to guide sleeve lower end surface and abuts with guide sleeve lower end surface, position valve seat liner being positioned at body cavity arranges pod apertures.

The quantity of pod apertures is at least 1.

Pod apertures is circularly and evenly distributed.

Valve core head is tubular, and its sidewall has otch.

The shape of otch is inverted V-arrangement, and the quantity of otch has 1 at least.

Otch is circularly and evenly distributed.

The position that valve seat liner matches with valve core head is the streamlined curved surface of evagination, and the position below streamlined curved surface is inverted cone surface.

The invention has the beneficial effects as follows: 1, valve seat liner extends to guide sleeve, and be lining with at the valve seat being positioned at body cavity position pod apertures is set, considerably reduce the impact force of medium to valve rod and valve core head, alleviate the impact of medium to transverse slat simultaneously, avoid the fracture of valve rod, valve core head and transverse slat, extend working life; 2, when the pod apertures be lining with in valve seat is circularly and evenly distributed, has disperseed the impact force of medium uniformly, more effectively protected valve rod and valve core head; 3, the shape of valve core head is tubular, and otch is had on its sidewall, make the valve core head when Flow-rate adjustment remain on valve seat inside to carry out moving up and down, compared with the valve core head of prior art center pillar stopper, adjust flux is carried out without the need to departing from valve seat by valve core head, such structure both can ensure the guidance quality that valve rod is good, reduced vibration, and the shape arranging otch that again can be personalized is with the demand of satisfied different operating mode down-off adjustment; 4, the position that valve seat liner matches with valve core head is the streamlined curved surface of evagination, the design of streamlined curved surface can make medium circulation more smooth and easy, reduce circulating resistance, reduce circulation impact force, position below streamlined curved surface is inverted cone surface, inverted cone surface can make the medium rapid depressurization flowing into valve seat inside, avoids valve core head be subject to media impingement and rupture.

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the structural representation of embodiment;

Fig. 2 is the sectional view of parts 1 three-dimensional structure schematic diagram in Fig. 1.

In figure: 1. valve gap; 2. valve body; 3. valve rod; 4. pressing plate; 5. transverse slat; 6. guide sleeve; 7. valve seat; 701. valve seat liners; 702. valve seat overcoats; 8. Sealing; 9. valve core head; 10. mounting groove; 11. otch; 12. adapters; 13. pod apertures; 14. streamlined curved surfaces; 15. inverted cone surfaces.

Embodiment

As Fig. 1, shown in 2, a kind of Corniform regulating valve, comprise valve body 2, valve gap 1, adapter 12, valve seat 7, valve rod 3, valve gap 1 is fixedly mounted on valve body 2 upper end, adapter 12 is fixedly mounted on valve body 2 lower end, the inner chamber of valve body 2 arranges transverse slat 5, transverse slat 5 is fixedly connected with guide sleeve 6 by pressing plate 4, valve body 2 and the surface of contact of adapter 12 arrange mounting groove 10, valve seat 7 is made up of valve seat liner 701 and valve seat overcoat 702, valve seat liner 701 is fixedly connected with valve seat overcoat 702, valve seat overcoat 702 outer side surface boss is set, boss is inlaid in mounting groove 10, and sealed by Sealing 8, valve rod 3 underpart arranges valve core head 9, valve rod 3 runs through valve gap 1 and guide sleeve 6, the valve core head 9 of its end to stretch in valve seat 7 and matches with the sealing surface of valve seat liner 701, valve seat liner 701 upper-end surface extends to guide sleeve 6 lower end surface and abuts with guide sleeve 6 lower end surface, position valve seat liner 701 being positioned at valve body 2 inner chamber arranges pod apertures 13, the quantity of pod apertures 13 is at least 1, preferred amount is even numbers, and be circularly and evenly distributed, make the impact force of medium dispersed by uniform pod apertures, effectively reduce the degradation degree of medium to valve rod and valve core head, extend working life.

Valve core head 9 is tubular, its sidewall has otch 11, the shape of otch 11 is inverted V-arrangement, also can according to flow need difform otch is set, as polygon-shaped, parabolic shape etc., the quantity of otch 11 has 1 at least, to ensure the circulation of medium, otch 11 is preferably circularly and evenly distributed, better to realize the control of flow.

Valve seat 7 is made up of valve seat liner 701 and valve seat overcoat 702, the wherein preferred Tungsten carbite of valve seat overcoat 702 material, and Tungsten carbite hardness is high, wear-resistant; The position that valve seat liner 701 matches with valve core head 9 is the streamlined curved surface 14 of evagination, and the position of streamlined curved surface less than 14 is inverted cone surface 15 inverted cone surface.

Claims

1. a Corniform regulating valve, comprise valve body, valve gap, adapter, valve seat, valve rod, described valve gap is fixedly mounted on valve body upper end, described adapter is fixedly mounted on valve body lower end, the inner chamber of described valve body arranges transverse slat, transverse slat is fixedly connected with guide sleeve by pressing plate, the surface of contact of described valve body and described adapter arranges mounting groove, described valve seat is made up of valve seat liner and valve seat overcoat, described valve seat liner is fixedly connected with valve seat overcoat, described valve seat overcoat outer side surface boss is set, boss is inlaid in described mounting groove, and sealed by Sealing, described valve rod underpart arranges valve core head, described valve rod runs through described valve gap and described guide sleeve, the valve core head of its end to stretch in valve seat and matches with the sealing surface of valve seat liner, it is characterized in that: described valve seat liner upper-end surface extends to described guide sleeve lower end surface and abuts with guide sleeve lower end surface, the position described valve seat liner being positioned at body cavity arranges pod apertures.

2. a kind of Corniform regulating valve as claimed in claim 1, is characterized in that: the quantity of described pod apertures is at least 1.

3. a kind of Corniform regulating valve as claimed in claim 1 or 2, is characterized in that: described pod apertures is circularly and evenly distributed.

4. a kind of Corniform regulating valve as claimed in claim 1, is characterized in that: described valve core head is tubular, and its sidewall has otch.

5. a kind of Corniform regulating valve as described in claim 1 or 4, is characterized in that: the shape of described otch is inverted V-arrangement, and the quantity of otch has 1 at least.

6. a kind of Corniform regulating valve as described in claim 1 or 4, is characterized in that: described otch is circularly and evenly distributed.

7. a kind of Corniform regulating valve as claimed in claim 1, is characterized in that: the position that described valve seat liner matches with valve core head is the streamlined curved surface of evagination, and the position below described streamlined curved surface is inverted cone surface.