CN206190957U - Adjustable control valve - Google Patents

Abstract

The utility model discloses an adjustable control valve, including valve body, disk seat, case, lower shaft and valve rod, the case is located the valve body and is connected with lower shaft and valve rod respectively, and the valve rod runs through the valve body, and the lower shaft is connected bottom the valve body, still include disk seat retaining ring and wearing layer, the case is the eccentric ball hat, the disk seat pass through the disk seat retaining ring with inner sidewall of the valve body connects, its side with the case laminating, the case with be provided with the wearing layer on the contact surface of disk seat respectively, the wearing layer is located respectively the case with the disk seat surface, be provided with the adjusting device who is used for adjusting contact force between case and the disk seat on case and the lower shaft. The utility model has the advantages of prior art's drawback, the reasonable novelty of structural design can be overcome to it.

Description

A kind of adjustable control valve

Technical field

The utility model is related to a kind of adjustable control valve, belongs to mechanical field.

Background technology

Regulating valve also known as control valve, in industrial automation process control field, are exported by receiving regulation unit Control signal, go to change the final control element of rate-of flow, pressure, temperature, the technological parameter such as liquid level by power operation. Typically it is made up of executing agency and valve.The Chinese patent of Patent No. CN201220695199.0 discloses a kind of eccentric adjusting Valve, the valve element and valve seat for which solving regulating valve in the prior art constantly rubs, and the time one is grown and abrasion easily occurs, causes regulation Valve leaks in occurring, the problem that influence is used.But while above-mentioned regulating valve can to a certain extent extend the use of regulating valve Life-span, but after regulating valve is worn and torn, still cannot be further ensured that the sealing of regulating valve.

Utility model content

Goal of the invention of the present utility model is：Can to a certain extent extend tune for regulating valve of the prior art The service life of valve is saved, but after regulating valve is worn and torn, still cannot be further ensured that the problem of the sealing of regulating valve, A kind of adjustable control valve is provided.

In order to solve the above technical problems, the utility model is adopted the technical scheme that, a kind of adjustable control valve, including valve Body, valve seat, valve element, lower shaft and valve rod, valve element are located in valve body and are connected respectively with lower shaft and valve rod, and valve rod runs through valve body, bottom Axle is connected with body base；Also include valve seat back-up ring and wearing layer, the valve element be eccentric spherical crown, valve seat by valve seat back-up ring with The valve body madial wall connection, its side is fitted with the valve element, is respectively provided with the valve element and the contact surface of the valve seat There is wearing layer, wearing layer is located at the valve element and the valve base surface respectively；It is provided with for adjusting on the valve element and lower shaft The adjusting apparatus of contact between valve element and valve seat.

Using a kind of adjustable control valve described in the utility model, by the setting of adjusting apparatus, in valve element and valve seat After being worn and torn due to friction, by adjusting the contact between adjusting means adjusting spool and valve seat, so as to ensure regulation The inner sealing of valve.

Optimization, above-mentioned adjustable control valve, the adjusting apparatus include being arranged at the adjusting bolt of lower shaft lower end, adjustment The top of screw rod contacts with lower shaft, and adjusting bolt stage casing is connected with valve body screw thread, and the lower end of adjusting bolt is fixedly connected with hexagonal Termination；The valve element includes two valve core plates be arrangeding in parallel, and two valve core plates are connected with spherical crown, and the two ends of spherical crown connect respectively Two ends of valve core plate；The spherical crown is arc elastic plate.

In the design of the application, lower shaft can be controlled to be moved up and down in valve body by rotating adjusting bolt, by lower shaft Movement, two spacing of valve core plate can be adjusted, after the spacing of two valve core plates change, the radian of the arc of spherical crown occurs Change.In the process, lower shaft is moved up, and spherical crown increases with the contact of valve seat, and lower shaft is moved down, the contact of spherical crown Pressure reduction.

Optimization, above-mentioned adjustable control valve, the spherical crown is provided with wearing layer with the contact surface of valve seat.

Optimization, above-mentioned adjustable control valve, the wearing layer is Si Tailite Alloy Plating film layers.

Optimization, above-mentioned adjustable control valve, the adjusting bolt is integrally formed setting with hexagon end head.

Optimization, above-mentioned adjustable control valve, the valve core plate is arc.

Valve core plate is set into arc can further be increased after spherical crown deforms by the elastic deformation of valve core plate The contact of spherical crown and valve seat.

Optimization, above-mentioned adjustable control valve is provided with arc support rod, arc branch in the arc opening of the valve core plate The two ends of strut are fixedly connected with the arc-shaped inner surface of valve core plate.

Setting for arc support rod can give larger elastic anchorage force when spherical crown occurs elastic deformation, increase spherical crown Elastic restoring force after elastic deformation, and then increase the contact of spherical crown and valve seat.

Optimization, above-mentioned adjustable control valve, arc opening direction and the arc of valve core plate of the arc support rod are opened Mouth direction is oppositely arranged.

Optimization, above-mentioned adjustable control valve, the stage casing of the arc support rod is provided with ogee section.

The drawbacks of overcoming prior art the utility model has the advantage of it, reasonable in design is novel.Using this reality With a kind of new described adjustable control valve, by the setting of adjusting apparatus, in valve element with valve seat because friction is worn and torn Afterwards, by adjusting the contact between adjusting means adjusting spool and valve seat, so as to ensure the inner sealing of regulating valve.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model embodiment 1；

Fig. 2 is the structural representation of the utility model embodiment 2.

Specific embodiment

Technical characterstic of the invention is expanded on further with specific embodiment below in conjunction with the accompanying drawings.

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain The utility model, is not used to limit the utility model.

Embodiment 1

As shown in figure 1, the utility model is a kind of adjustable control valve, including valve body 1, valve seat 2, valve element 3, the and of lower shaft 4 Valve rod 5, valve element 3 is located in valve body 1 and is connected respectively with lower shaft 4 and valve rod 5, and valve rod 5 runs through valve body 1, lower shaft 4 and the bottom of valve body 1 Portion connects；Also include valve seat back-up ring 6 and wearing layer, the valve element 3 is eccentric spherical crown, and valve seat 2 passes through valve seat back-up ring 6 and the valve The madial wall of body 1 is connected, and its side is fitted with the valve element 3, is respectively arranged with the valve element 3 and the contact surface of the valve seat 2 Wearing layer, wearing layer is located at the valve element 3 and the surface of the valve seat 2 respectively；It is provided with for adjusting on the valve element 3 and lower shaft 4 The adjusting apparatus of contact between whole valve element 3 and valve seat 2.The adjusting apparatus include being arranged at the adjustment spiral shell of the lower end of lower shaft 4 Bar 41, the top of adjusting bolt 41 contacts with lower shaft 4, and the stage casing of adjusting bolt 41 is threadedly coupled with valve body 1, under adjusting bolt 41 End is fixedly connected with hexagon end head 42；The valve element 3 includes two valve core plates 31 be arrangeding in parallel, and two valve core plates 31 are connected with Spherical crown 32, the two ends of spherical crown 32 connect two ends of valve core plate 31 respectively；The spherical crown 32 is arc elastic plate.The spherical crown 32 are provided with wearing layer with the contact surface of valve seat 2.The wearing layer is Si Tailite Alloy Plating film layers.The adjusting bolt 41 with Hexagon end head 42 is integrally formed setting.The valve core plate 31 is arc.

Embodiment 2

As shown in Fig. 2 this embodiment is with the difference of embodiment 1：It is provided with the arc opening of the valve core plate 31 Arc support rod 33, the two ends of arc support rod 33 are fixedly connected with the arc-shaped inner surface of valve core plate 31.The arc support rod 33 arc opening direction is oppositely arranged with the arc opening direction of valve core plate 31.The stage casing of the arc support rod 33 is provided with Ogee section 34.

Certainly, described above is not that, to limitation of the present utility model, the utility model is also not limited to the example above, this The those of ordinary skill of technical field, in essential scope of the present utility model, change, remodeling, addition or the replacement made, all Protection domain of the present utility model should be belonged to.

Claims (9)

1. a kind of adjustable control valve, including valve body（1）, valve seat（2）, valve element（3）, lower shaft（4）And valve rod（5）, valve element（3）Position In valve body（1）It is interior and respectively with lower shaft（4）And valve rod（5）Connection, valve rod（5）Through valve body（1）, lower shaft（4）With valve body（1）Bottom Portion connects；Also include valve seat back-up ring（6）And wearing layer, the valve element（3）It is eccentric spherical crown, valve seat（2）By valve seat back-up ring（6） With the valve body（1）Madial wall connection, its side and the valve element（3）Laminating, the valve element（3）With the valve seat（2）Connect Wearing layer is respectively arranged with contacting surface, wearing layer is located at the valve element respectively（3）With the valve seat（2）Surface；It is characterized in that： The valve element（3）And lower shaft（4）On be provided with for adjusting valve element（3）With valve seat（2）Between contact adjusting apparatus.

2. adjustable control valve according to claim 1, it is characterised in that：The adjusting apparatus include being arranged at lower shaft （4）The adjusting bolt of lower end（41）, adjusting bolt（41）Top and lower shaft（4）Contact, adjusting bolt（41）Stage casing and valve body （1）Threaded connection, adjusting bolt（41）Lower end be fixedly connected with hexagon end head（42）；The valve element（3）It is parallel including two The valve core plate of setting（31）, two valve core plates（31）It is connected with spherical crown（32）, spherical crown（32）Two ends connect two valve elements respectively Plate（31）End；The spherical crown（32）It is arc elastic plate.

3. adjustable control valve according to claim 2, it is characterised in that：The spherical crown（32）With valve seat（2）Contact Face is provided with wearing layer.

4. adjustable control valve according to claim 3, it is characterised in that：The wearing layer is Si Tailite alloy coatings Layer.

5. adjustable control valve according to claim 2, it is characterised in that：The adjusting bolt（41）With hexagon end head （42）It is integrally formed setting.

6. adjustable control valve according to claim 2, it is characterised in that：The valve core plate（31）It is arc.

7. adjustable control valve according to claim 6, it is characterised in that：The valve core plate（31）Arc opening in set It is equipped with arc support rod（33）, arc support rod（33）Two ends and valve core plate（31）Arc-shaped inner surface be fixedly connected.

8. adjustable control valve according to claim 7, it is characterised in that：The arc support rod（33）Arc opening Direction and valve core plate（31）Arc opening direction be oppositely arranged.

9. adjustable control valve according to claim 8, it is characterised in that：The arc support rod（33）Stage casing set There is ogee section.