CN201836432U

CN201836432U - Linear regulating valve

Info

Publication number: CN201836432U
Application number: CN2010205775085U
Authority: CN
Inventors: 侯顺利; 汤伟
Original assignee: Shaanxi University of Science and Technology
Current assignee: Shaanxi University of Science and Technology
Priority date: 2010-10-26
Filing date: 2010-10-26
Publication date: 2011-05-18
Anticipated expiration: 2020-10-26

Abstract

The utility model provides a linear regulating valve comprising a valve body, a valve core arranged inside the valve body, a valve cover arranged at the upper end of the valve body, and a connecting screw connecting the valve body and with valve cover, wherein a connecting shaft is integrally formed at the central position of the upper end of the valve core and connected with an electric execution mechanism; one end of the valve core in axial direction is provided with a round hole used as a flowing-out channel; a rectangular hole used as a flowing-in channel is arranged in the valve core in the circumferential direction; the rectangular hole is communicated with the round hole; and the valve body is provided with an inlet channel communicated with the rectangular hole, and the cross sections of the inlet channel are different in width. The fluid flow of the regulating valve can linearly change along with the rotation angles of the valve core, so that the fluid flow can be conveniently regulated, and the linear regulating valve is compact in structure, convenient to arrange and install and smooth for a passageway, and can be suitable for fluid medium containing less solid.

Description

A kind of linearly adjust valve

Technical field

The utility model relates to a kind of modulating valve of regulated fluid flow, particularly a kind of linearly adjust valve.

Background technique

All need the flow of convection cell to regulate in many occasions to satisfy the needs of technology.When the flow that requires fluid during by linear change, just needs to adopt the linearly adjust valve along with the adjustment process of valve.When fluid is not pure clear water, but contain small amounts of solid matter, and these solid matters in case assemble be just might influence the correct realization of manufacturing process the time in modulating valve, the internal structure of modulating valve is just had special requirement.When the space that modulating valve is installed is restricted, maybe need many modulating valve are installed concentratedly together, be about to a plurality of modulating valve lineal shapes or annular array and install, this just needs the structure of modulating valve compact as far as possible, and imports and exports the connection that direction helps passing in and out pipe.And existing modulating valve can not well satisfy above requirement simultaneously.

The model utility content

Technical problem to be solved in the utility model provides a kind of compact structure, be convenient to arrange installation, runner is unobstructed, adapt to the linearly adjust valve that the flowing medium that contains small amount of solid passes through.

For achieving the above object, the utility model provides a kind of linearly adjust valve, comprise valve body, place valve inner spool, place the valve gap of valve body upper end, and the attachment screw that connects valve body and valve gap, described spool is connected with electric actuator; An axial end of described spool is provided with a circular port as flow pass, the spool circumferencial direction is provided with a rectangular opening as flow channel, this rectangular opening communicates with circular port, and valve body is provided with the inlet channel of the rectangle that communicates with rectangular opening, each cross-sectional width difference of this inlet channel.

As preferred embodiment of the present utility model, a side of described inlet channel is a curved surface;

As preferred embodiment of the present utility model, the width of described rectangular opening is less than the diameter of circular port;

As preferred embodiment of the present utility model, a side of described rectangular opening and a side of circular port are tangent;

As preferred embodiment of the present utility model, has the gap between the outer peripheral surface of described spool and the inner peripheral surface of valve body;

As preferred embodiment of the present utility model, the bottom end of described spool closely contacts with valve body bottom interior edge face;

As preferred embodiment of the present utility model, there is the gap between the lower surface of described valve gap and the upper surface of valve body, in this gap, elastic washer is installed;

As preferred embodiment of the present utility model, described valve gap is provided with chamfering in the corner that contacts with spool, between this chamfering and the spool seal ring is installed;

As preferred embodiment of the present utility model, described spool upper end is formed with coupling shaft, and this coupling shaft is divided into valve gap a pair of valve gap that is mutually symmetrical.

The utility model linearly adjust valve has the following advantages at least: 1. spool and valve body are the rectangle entrance passage, and when spool rotated, the fluid flow by modulating valve was linear change with the spool angle of swing, is convenient to the adjusting of fluid flow; 2. fluid enters the round exit passage of spool along the rectangular channel tangent line, produces vortex motion, flows out in the helix mode, has guaranteed stable flowing state, helps preventing solid matter adhering in vias inner walls; 3. a side of valve body inlet channel is the curved surface shape, can eliminate fluid enters the dead angle of spool from valve body, to avoid the deposition of solid matter; 4. by regulating the tightness of attachment screw, can change the amount of deformation of elastic washer, thereby regulate between valve gap and the spool, suitable sealing load all arranged between spool and the valve body, both guaranteed good sealing effect, make the rotational resistance of spool be unlikely to excessive again.

Description of drawings

Fig. 1 is the sectional view of the utility model linearly adjust valve;

Fig. 2 is along the side view of B line among Fig. 1;

Fig. 3 is the sectional view of Fig. 1 along the A-A line;

Fig. 4 is the half-open position schematic representation of the utility model linearly adjust valve;

Fig. 5 is the full closing state schematic representation of the utility model linearly adjust valve.

Embodiment

Below in conjunction with accompanying drawing the utility model linearly adjust valve is described in detail:

See also Fig. 1 to shown in Figure 3, the utility model modulating valve comprises valve body 1, as for the spool 2 of valve body 1 inside, cover valve gap 3, and the attachment screw 6 that vertically connects valve body 1 and valve gap 3 in valve body 1 upper end.

The profile of described spool 2 is cylindrical, be provided with a circular port 8 at spool 2 axial ends as flow pass, spool 2 circumferencial directions are provided with a rectangular opening 7 as flow channel, the top of this rectangular opening 7 is concordant with the top of this circular port 8, please consult shown in Figure 3 especially, the width of this rectangular opening 7 is less than the diameter of this circular port 8, and a side of this rectangular opening 7 and a side of this circular port 8 are tangent and communicate with each other.

In addition, keep small gap between the inner peripheral surface 11 of the outer peripheral surface of spool 2 and valve body 1, the bottom end of spool 2 closely contacts with valve body 1 bottom interior edge face 12, to guarantee sealing effect; Moreover, be formed with coupling shaft 9 in centre position, the upper end of spool 2, so that spool 2 is connected with electric actuator, drive spool 2 by desired direction and angle rotation, so that the flow of fluid changes by linear relationship according to control command by electric actuator.

Valve body 1 is provided with the inlet channel that cross section is a rectangle in the position corresponding with the rectangular opening 7 of spool 2, the inlet channel of this rectangle communicates with rectangular opening, and each cross-sectional width difference of the inlet channel of rectangle, please consult Fig. 3 especially to shown in Figure 5, a side of the inlet channel of this rectangle is a curved surface 10.

Described valve gap 3 is two, and the coupling shaft 9 of aforementioned spool 2 is just in time between this is to valve gap 3; There is the gap between the upper surface of the lower surface of described valve gap 3 and valve body 1, elastic washer 5 is installed in this gap; In addition, valve gap 3 is provided with chamfering at the pin place that contacts with spool 2, between this chamfering place and the spool seal ring 4 is installed.

Described attachment screw 6, vertically extend into valve body 1 inside from valve gap 3, with this valve gap 3 and valve body 1 are coupled together, by regulating the tightness of attachment screw 6, can change the amount of deformation of elastic washer 5, thereby make between valve gap 3 and the spool 2, suitable seal pressure is all arranged between spool 2 and the valve body 1, so, both can guarantee good sealing effect, and can make the rotational resistance of spool 2 be unlikely to excessive again.

Please in conjunction with consulting Fig. 3 to shown in Figure 5, the working procedure of the utility model modulating valve is: fluid is entered by the inlet channel of rectangle on valve body 1 circumferential surface, because a side of this inlet channel is a curved surface 10, therefore can progressively change the flow direction of fluid, when spool 2 is in half-open position, the dead angle that can eliminate fluid enters spool 2 from valve body 1, to avoid the deposition of solid matter, fluid enters the round exit passage 8 of spool 2 along the inlet channel tangent line of rectangle subsequently, and generation vortex motion, flow out downwards in the helix mode, so both guaranteed stable flowing state, help preventing solid matter adhering to again in vias inner walls.

Because spool 2 and valve body 1 are the rectangle entrance passage, therefore, when spool 2 rotations, the fluid flow by modulating valve is linear change with spool 2 angle of swing, thereby realizes the linearly adjust of fluid flow.

The above only is a kind of mode of execution of the present utility model, it or not whole or unique mode of execution, the conversion of any equivalence that those of ordinary skills take technical solutions of the utility model by reading the utility model specification is claim of the present utility model and contains.

Claims

1. linearly adjust valve, it is characterized in that: comprise valve body (1), place the inner spool (2) of valve body (1), place the valve gap (3) of valve body (1) upper end, and the attachment screw (6) that connects valve body (1) and valve gap (3), described spool (2) is connected with electric actuator; An axial end of described spool (2) is provided with a circular port as flow pass (8), spool (2) circumferencial direction is provided with a rectangular opening as flow channel (7), this rectangular opening (7) communicates with circular port (8), and valve body (1) is provided with the inlet channel of the rectangle that communicates with rectangular opening (7), each cross-sectional width difference of this inlet channel.

2. linearly adjust valve as claimed in claim 1 is characterized in that: a side of described inlet channel is a curved surface.

3. linearly adjust valve as claimed in claim 2 is characterized in that: the width of described rectangular opening (7) is less than the diameter of circular port (8).

4. as claim 1 or 3 described linearly adjust valves, it is characterized in that: a side of a side of described rectangular opening (7) and circular port (8) is tangent.

5. linearly adjust valve as claimed in claim 1 is characterized in that: have the gap between the inner peripheral surface (11) of the outer peripheral surface of described spool (2) and valve body (1).

6. linearly adjust valve as claimed in claim 1 is characterized in that: the bottom end of described spool (2) closely contacts with valve body (1) bottom interior edge face (12).

7. linearly adjust valve as claimed in claim 1 is characterized in that: have the gap between the upper surface of the lower surface of described valve gap (3) and valve body (1), elastic washer (5) is installed in this gap.

8. linearly adjust valve as claimed in claim 1 is characterized in that: described valve gap (3) is provided with chamfering in the corner that contacts with spool (2), and seal ring (4) is installed between this chamfering and the spool (2).

9. linearly adjust valve as claimed in claim 1 is characterized in that: described spool (2) upper end is formed with coupling shaft (9), and this coupling shaft (9) is divided into valve gap (3) a pair of valve gap (3) that is mutually symmetrical.