CN212690856U

CN212690856U - High pressure difference regulating valve with pre-opening function

Info

Publication number: CN212690856U
Application number: CN202021420064.4U
Authority: CN
Inventors: 徐星; 沈地
Original assignee: Wuhan Yong Tai'an Valve Co ltd
Current assignee: Wuhan Yong Tai'an Valve Co ltd
Priority date: 2020-07-19
Filing date: 2020-07-19
Publication date: 2021-03-12
Anticipated expiration: 2030-07-19

Abstract

The utility model relates to the technical field of valves, in particular to a high pressure difference regulating valve with a pre-opening function; including the disk seat, the valve body, the valve gap, the big valve clack, sleeve and valve rod, telescopic bottom surface fixed connection is on the disk seat, the nested big valve clack that has of sleeve internal clearance, the passageway that runs through from top to bottom has been seted up on the axis of big valve clack, the movable chamber that the passageway was seted up through it holds the valve lamella of opening in advance, and the bottom of the valve lamella of opening in advance is the toper, the top surface fixedly connected with valve rod of the valve lamella of opening in advance has cup jointed lock nut on the valve rod, and has seted up a plurality of through-holes that run through from top to bottom on the lock nut, lock nut screwed connection is in the top of big valve clack department, the utility model discloses greatly reduced the height advance and.

Description

High pressure difference regulating valve with pre-opening function

Technical Field

The utility model relates to the technical field of valves, concretely relates to high pressure differential governing valve with pre-opening function.

Background

In the field of industrial automation process control, a final control element for changing technological parameters of medium flow, pressure, temperature and liquid level by means of power operation is formed from actuating mechanism and valve, and is applicable to the medium of air, water, steam, various corrosive media, slurry and oil product.

The regulating valve comprises a high-pressure regulating valve, the medium before and after the valve has larger pressure difference, and the medium pressure acting on the valve clack is overcome more besides the friction force of the valve rod and the packing when the valve is opened, so that larger instantaneous force is required for opening the valve in time, and the driving force is greatly consumed.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

To the above-mentioned shortcoming that prior art exists, the utility model provides a high pressure difference governing valve with pre-opening function can solve prior art's governing valve when opening effectively except need overcoming valve rod and filler frictional force, more is overcoming the medium pressure who acts on the valve clack, consequently opens in the same time and can need great instantaneous power, has consumed the problem of drive power widely.

Technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides a high pressure difference governing valve with function of opening in advance, includes disk seat, valve body, valve gap, big valve clack, sleeve and valve rod, telescopic bottom surface fixed connection is on the disk seat, the nested big valve clack that has in the sleeve clearance, the passageway that runs through from top to bottom has been seted up on the axis of big valve clack, the passageway has the valve clack of opening in advance through the movable chamber holding that its was seted up, and the bottom of the valve clack of opening in advance is the toper, the top surface fixedly connected with valve rod of valve clack opens in advance, lock nut has been cup jointed on the valve rod, and has seted up a plurality of through-holes that run through from top to bottom on the lock nut, lock nut screwed connection.

Furthermore, a valve cover is fixed on the top surface of the valve body through a plurality of stud bolts, and an electric driving mechanism is fixedly installed at the top end of the valve cover.

Furthermore, the other end of the valve rod is fixedly connected with the electric driving mechanism, and a wave-shaped packing and a packing gasket which are matched are arranged between the valve rod and the valve cover.

Furthermore, the sleeve is circumferentially provided with an opening which enables the inside and the outside of the sleeve to be communicated.

Further, the valve seat is fixedly welded inside the valve body.

Advantageous effects

Adopt the utility model provides a technical scheme compares with known public technique, has following beneficial effect:

1. the utility model discloses a designed one in big valve clack and opened little valve clack in advance, when the valve need be opened, it shifts up to drive the valve clack of opening in advance through electric drive mechanism, and the medium flows into the cavity that the valve had been kept apart before this moment, and when reaching pressure balance around the big valve clack, the valve clack of opening in advance drives big valve clack motion again, and the valve is opened, and this kind of design greatly reduced the height advance low valve and go out required power in the twinkling of an eye when the valve is opened, reduced the consumption of energy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

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

FIG. 2 is a schematic view of the cross-sectional structure of the valve body of the present invention when opened;

fig. 3 is a schematic sectional structure view of the lock nut of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure of the large valve flap of the present invention;

the reference numerals in the drawings denote: 1-a valve body; 2-valve cover; 3-a valve stem; 4-pre-opening the valve flap; 5-valve seat; 6-a sleeve; 7-big valve clack; 701-channel; 702-an active cavity; 8-locking a nut; 801-through holes; 9-stud bolts; 10-electric driving mechanism.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be further described with reference to the following examples.

Examples

A high differential pressure regulating valve with a pre-opening function according to the present embodiment is described with reference to fig. 1 to 4: including disk seat 5, valve body 1, valve gap 2, big valve clack 7, sleeve 6 and valve rod 3, its characterized in that: bottom surface fixed connection of sleeve 6 is on

disk seat

5, 6 inner gaps of sleeve are nested has big valve clack 7, passageway 701 that runs through from top to bottom has been seted up on the axis of big valve clack 7, passageway 701 holds pre-opened valve clack 4 through its activity chamber 702 of seting up, and the bottom of pre-opened valve clack 4 is the toper, the top surface fixedly connected with valve rod 3 of pre-opened valve clack 4, lock nut 8 has been cup jointed on the valve rod 3, and set up a plurality of through-holes 801 that run through from top to bottom on the

lock nut

8, 8 threaded connection of lock nut is in the top of big valve clack 7 department.

Wherein, the top surface of valve body 1 is fixed with valve gap 2 through a plurality of stud 9, and the top fixed mounting of valve gap 2 has electric drive mechanism 10, and the other end and the electric drive mechanism 10 fixed connection of valve rod 3 are equipped with matched with wave form packing and packing ring simultaneously between valve rod 3 and the valve gap 2, and the circumference is seted up and is made its inside and outside communicating trompil on sleeve 6, and the fixed welding of disk seat 5 is in the inside of valve body 1.

When the valve is completely closed, referring to the attached figure 1, when the valve is completely closed, a medium enters the sleeve 6 from the branch pipe on the upper cavity of the valve body 1, enters the gap between the sleeve 6 and the large valve clack 7 from the opening of the sleeve 6, because the bottom edge of the large valve clack 7 is sealed with the bottom edge of the sleeve 6, the medium entering the gap flows upwards to the cavity between the large valve clack 7 and the valve cover 2, then enters the upper cavity of the large valve clack 7 through the through hole 801 of the locking nut 8, and then blocks the channel 701 of the large valve clack 7 because the bottom surface of the pre-opened valve clack 4 is tightly attached to the large valve clack 7, so that the medium cannot flow into the lower cavity of the.

Referring to fig. 2, when the valve is opened, the electric driving mechanism 10 drives the pre-opened valve flap 4 to move upwards for a pre-opening distance in the movable cavity 702 of the channel 701 through the valve rod 3, when the pre-opened valve flap 4 moves, the bottom of the pre-opened valve flap 4 does not block the channel 701 of the large valve flap 7 any more, at this time, the medium flows to the lower cavity of the valve body 1 through the channel 701, after the pre-opening distance is moved, the pre-opened valve flap 4 jacks up the locking nut 8 which is spirally connected with the top opening of the large valve flap 7 and drives the large valve flap 7 to move upwards, the medium starts to flow into the lower cavity from the opening hole of the sleeve 6 at this time, by designing the pre-opened valve flap 4 with a small sectional area in the large valve flap 7, when the pre-opened valve flap 4 is opened, the internal and external pressures of the medium acting on the large valve flap 7 are balanced, the pressure difference is remarkably reduced, the opening force is remarkably reduced, the, has good practicability.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a high pressure differential governing valve with function of opening in advance, includes disk seat (5), valve body (1), valve gap (2), big valve clack (7), sleeve (6) and valve rod (3), its characterized in that: the bottom surface fixed connection of sleeve (6) is on disk seat (5), sleeve (6) inner gap nestification has big valve clack (7), passageway (701) that run through from top to bottom have been seted up on the axis of big valve clack (7), movable chamber (702) that passageway (701) were seted up through it hold and have opened valve lamella (4) in advance, and the bottom of valve lamella (4) in advance is the toper, the top surface fixedly connected with valve rod (3) of valve lamella (4) in advance, lock nut (8) have been cup jointed on valve rod (3), and have seted up a plurality of through-holes (801) that run through from top to bottom on lock nut (8), lock nut (8) screwed connection is in the top of big valve clack (7) department.

2. The high differential pressure regulating valve with the pre-opening function is characterized in that a valve cover (2) is fixed on the top surface of the valve body (1) through a plurality of stud bolts (9), and an electric driving mechanism (10) is fixedly installed at the top end of the valve cover (2).

3. The high differential pressure regulating valve with the pre-opening function is characterized in that the other end of the valve rod (3) is fixedly connected with the electric driving mechanism (10), and a wave-shaped packing and a packing gasket which are matched are arranged between the valve rod (3) and the valve cover (2).

4. The high differential pressure regulating valve with pre-opening function according to claim 1, characterized in that the sleeve (6) is circumferentially provided with openings for communicating the inside and the outside.

5. A high differential pressure regulating valve with pre-opening function according to claim 1, characterized in that the valve seat (5) is fixedly welded inside the valve body (1).