CN210949885U

CN210949885U - Regulating valve retainer ring type lower limiting structure

Info

Publication number: CN210949885U
Application number: CN201921647150.6U
Authority: CN
Inventors: 孙日平; 李云山; 杨智; 翟卓峰; 王文冬
Original assignee: Shanxi Haolifa Mechanical Manufacturing Co ltd
Current assignee: Shanxi Haolifa Mechanical Manufacturing Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-07-07
Anticipated expiration: 2029-09-30

Abstract

The utility model provides a stop structure under governing valve retaining ring formula, including valve body, valve gap, retaining ring, case, valve rod, the valve rod passes the case, connects into a whole with valve rod and case through the riveting, packs this whole into from the lower extreme opening part of valve body, packs the retaining ring inslot of valve body into with the retaining ring from valve body lower extreme opening part, and the valve gap passes through bolted connection with the valve body, seals valve body lower extreme opening. The utility model has the advantages that: simple structure, processing is convenient, and the motion range of case leans on case lower part length just adjustable simultaneously, can repair when the assembly, makes the motion range of case can control in a very little within range, improves valve characteristic curve's accuracy greatly, makes valve flow control more accurate.

Description

Regulating valve retainer ring type lower limiting structure

Technical Field

The utility model relates to the valve field, concretely relates to limit structure under governing valve.

Background

The regulating valve is also called a control valve, and is operated by power to change the flow of the fluid by receiving a control signal output by the regulating control unit. The regulating valve is generally composed of an actuating mechanism and a valve, if the regulating valve is divided according to the power used by the actuating mechanism, the regulating valve can be divided into a pneumatic regulating valve, an electric regulating valve and a hydraulic regulating valve, and if the regulating valve is divided according to the functions and characteristics, the regulating valve can be divided into a linear characteristic, an equal percentage characteristic and a parabolic characteristic.

The regulating valve mostly adopts a straight stroke structure, namely, the valve core makes straight reciprocating motion, the outlet flow value of the valve is regulated through the valve core at different positions, but the motion of the valve core has a range which is already determined during the valve design. The existing regulating valve in the market basically adopts a stop valve type structure, namely a valve rod is arranged on one side of a valve cover, the lower limit of a valve core is contacted with a valve seat by the valve core, and the upper limit of the valve core is contacted with the valve cover by the valve rod, so that the movement range of the valve core is determined. The limiting structure is complex, the processing is difficult, the motion range of the valve core fluctuates greatly, the characteristic curve of the valve is inaccurate, and the flow can not be accurately regulated.

Disclosure of Invention

For solving the problem that current governing valve exists, the utility model discloses a limit structure under new, simple structure, processing is convenient, adjusts limit range easily, makes the governing valve more accurate.

The utility model adopts the technical proposal that: the lower limit structure comprises a valve body, a valve cover, a check ring, a valve core and a valve rod. The valve rod penetrates through the valve core, and the valve rod and the valve core are connected into a whole through riveting. The whole body is arranged from the opening at the lower end of the valve body, the retainer ring is arranged in the retainer ring groove of the valve body from the opening at the lower end of the valve body, and the valve cover is connected with the valve body through the bolt to seal the opening at the lower end of the valve body.

The utility model has the advantages that: simple structure, processing is convenient, and the motion range of case leans on case lower part length just adjustable simultaneously, can repair when the assembly, makes the motion range of case can control in a very little within range, improves valve characteristic curve's accuracy greatly, makes valve flow control more accurate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, each sequence number represents a name: 1. the valve cover 2, the valve body 3, the retainer ring 4, the valve core 5 and the valve rod.

Detailed Description

In order to make the purpose and technical solution of the present invention more clear, the present invention will be further described with reference to the accompanying drawings.

The lower limit structure comprises a valve body 2, a valve cover 1, a check ring 3, a valve core 4 and a valve rod 5. The valve rod 5 penetrates through the valve core 4, and the valve rod 5 and the valve core 4 are connected into a whole through riveting. The whole body is arranged from the lower end opening of the valve body 2, the retainer ring 3 is arranged in the retainer ring groove of the valve body 2 from the lower end opening of the valve body 2, and the valve cover 1 is connected with the valve body 2 through the bolt to seal the lower end opening of the valve body 2.

When the valve core 4 moves upwards, the valve core 4 contacts and extrudes with the valve body 2, so that the valve core 4 is limited to continue to move upwards, and when the valve core 4 moves downwards, the valve core 4 contacts and extrudes with the retainer ring 3, so that the valve core 4 is limited to move downwards, and the control of the up-and-down movement range of the valve core 4 is realized.

Finally, it is noted that the above examples are only intended to illustrate the technical solutions of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a limit structure under governing valve retaining ring formula, includes valve body, valve gap, retaining ring, case, valve rod, its characterized in that: the valve rod penetrates through the valve core, the valve rod and the valve core are connected into a whole through riveting, the whole is installed from the opening at the lower end of the valve body, the check ring is installed from the opening at the lower end of the valve body, the valve cover is connected with the valve body through the bolt, and the opening at the lower end of the valve body is sealed.

2. The regulating valve retainer ring type lower limit structure as claimed in claim 1, wherein: the valve rod and the valve core of the lower limit structure are connected through riveting.

3. The regulating valve retainer ring type lower limit structure as claimed in claim 1, wherein: a stop ring groove is processed at the opening at the lower end of the valve body of the lower limit structure, and after the valve core is arranged in the valve body, a stop ring is arranged in the stop ring groove.

4. The regulating valve retainer ring type lower limit structure as claimed in claim 1, wherein: the valve rod and the valve cover of the lower limit structure are respectively positioned at two sides of the valve body, and the valve core is contacted with the check ring to limit.