CN204328077U - A kind of V-type three-way regulating ball valve - Google Patents

Abstract

A kind of V-type three-way regulating ball valve, comprise valve body, valve gap, spool, valve rod, described spool is arranged in valve body, described valve body and valve gap are combined to form two MEDIA FLOW stand in channels and a medium flow pass, the internal orifice of each MEDIA FLOW stand in channel is respectively equipped with valve seat, described spool is semiglobe and spool has two v-notch, spool is by valve rod driven rotary, the sealed working face of spool is sphere, the corresponding valve seat of sealing working surface seals, two v-notch are arranged on the both sides of sealed working face, V-type three-way regulating ball valve can not only control UNICOM between valve port (internal orifice) or cut-out, also the effect controlling flow is played to medium simultaneously, the size of accurate flow control can carry out ratio mixing.

Description

A V-shaped three-way regulating ball valve

technical field

The invention relates to an automatic actuator, in particular to a three-way regulating ball valve.

Background technique

In the production process of petroleum, petrochemical, chemical, water treatment, tank farm and other industries, when it is necessary to realize the requirements of diversion, confluence and mixed flow regulation of gas, liquid, powder and other media, the existing three-way ball valves are generally only used in pipelines The opening position of the diversion, confluence and flow direction of the medium is usually 90°. In this case, a certain pipeline is either in the fully open position or the fully closed position, that is, the three-way ball valve cannot realize flow adjustment and flow ratio. mix.

Contents of the invention

In view of the technical problems in the background technology, the technical problem to be solved by the present invention is to provide a V-type three-way regulating ball valve that can realize flow regulation, proportional mixing, and diversion and confluence.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a V-shaped three-way regulating ball valve, including a valve body, a valve cover, a valve core, and a valve stem, the valve core is arranged in the valve body, and the valve body and The valve cover is combined to form two medium inflow channels and one medium outflow channel. The inner ports of each medium inflow channel are respectively provided with valve seats. It is characterized in that: the valve core is a hemispherical structure and two V V-shaped cutout, the valve core is rotated by the valve stem, the sealing working surface of the valve core is a spherical surface, and the sealing working surface is sealed corresponding to the valve seat, and two V-shaped cutouts are arranged on both sides of the sealing working surface.

The valve core and the valve stem are connected by splines, and the valve stem includes an upper valve stem and a lower valve stem, and the upper and lower valve stems are fixed on the valve body by self-lubricating bearings.

The pre-tightening sealing force between the valve seat and the valve core adopts a wave spring.

Each V-shaped notch is arranged symmetrically up and down on the horizontal plane, and two V-shaped notches are arranged symmetrically on the vertical plane. The rotation of the valve core makes the sealing working surface move between the two valve seats. The flow area of the runner openings is varied in percentage respectively.

The beneficial effect of the invention is that the V-type three-way regulating ball valve can not only control the connection or cut-off between the valve ports (inner ports), but also control the flow of the medium, and can accurately control the size of the flow for proportional mixing. When the valve core rotates, the shape of the opening surface gradually changes from triangle to arc shape, thus changing the flow area of the valve, and the continuous change of the opening area of the sphere realizes the flow adjustment of the valve, and its flow characteristics are approximately equal percentage characteristics. The valve core and valve stem are connected by splines, and the upper and lower valve stems are fixed by self-lubricating bearings, which have high rotation precision and good rotation stability. The pre-tightening sealing force between the valve seat and the valve core adopts a wave spring, which can ensure that the valve seat is always in close contact with the valve core, has good sealing performance, and can automatically compensate for the wear of the sealing pair during long-term use. Therefore, compared with the prior art, the present invention has outstanding substantive features and remarkable progress.

Description of drawings

The details and working principles of the implementation modes and examples of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a structural schematic diagram of the present invention, taken along the axial plane of the valve stem.

Fig. 2 is a structural schematic diagram of a cross section of a vertical valve stem of the present invention.

3 and 4 are schematic diagrams of the three-dimensional structure of the valve core of the present invention. Figure 3 is facing the sealing working surface, and Figure 4 is facing the V-shaped port.

Among the figure: 1 valve body, 2 valve core, 3 valve seat, 4 wave spring, 5 valve cover, 6 sealing seat cover, 7 lower valve stem, 8 self-lubricating bearing, 9 upper valve stem.

Detailed ways

Referring to the accompanying drawings, a V-shaped three-way regulating ball valve for flow regulation and flow proportional mixing in this embodiment includes a valve body 1, a valve cover 5, a valve core 2, and a valve stem. The valve core 2 is arranged on the valve In the body 1, the valve body 1 and the valve cover 5 are combined to form two medium inflow channels A, B and one medium outflow channel C, and the inner ports of each medium inflow channel are respectively provided with valve seats 3, and the valve core 2 is a hemispherical structure and there are two V-shaped cuts on the valve core. The valve core is rotated by the valve stem. The sealing working surface of the valve core 2 is a spherical surface. The sealing working surface is sealed corresponding to the valve seat. Set on both sides of the sealing working surface. Therefore, the rotation of the spool will cause the sealing working surface to move between the two valve seats. The sealing working surface can completely close one medium inflow channel, or it can be between two medium inflow channels, so that the spool rotation can be switched. The role of flow direction, confluence and divergence. At the same time, the sealing working surface moves between the two valve seats. The V-shaped cutouts on both sides of the sealing working surface respectively control the flow area of the two medium flow channels. Flow is regulated.

Since two V-shaped cutouts are opened on the spool 2, the spool rotates, and the shape of one of the opening surfaces gradually changes from a triangle to an arc shape, thereby changing the flow area of the valve, and the continuous change of the sphere opening area realizes the flow adjustment of the valve. Its flow characteristics are approximately equal percentage characteristics. Since there are two V-shaped cutouts on the spool, and the two V-shaped cutouts of the spool correspond to the area of the flow channel openings that control the flow of two media into the channels, the two flow channel openings on the spool (that is, the flow area) The opening degree of the fluid channel relative to the valve body is different, and changes continuously during the rotation process, so as to achieve the purpose of adjusting and mixing the incoming fluid in proportion. The tee and the spool have two V-shaped cutouts to ensure that the V-shaped three-way regulating ball valve can not only control the connection or cut-off between the valve ports, but also control the flow of the medium, and can accurately control the size of the flow. Mix proportionately. In this embodiment, each V-shaped notch is arranged symmetrically up and down on the horizontal plane, and two V-shaped notches are arranged symmetrically on the front and back of the vertical plane.

The valve core 2 and the valve stem are connected by splines. The valve stem includes an upper valve stem 9 and a lower valve stem 7. The upper and lower valve stems are fixed on the valve body by self-lubricating bearings 8. The valve core has high rotation precision and Good rotation stability.

The pre-tightening sealing force between the valve seat 3 and the valve core 2 adopts a wave spring 4 . That is, a wave spring 4 is set between the valve seat 3 and the valve cover 5, and a wave spring is set between the valve seat 3 and the sealing seat cover 6, which can ensure that the valve seat is always in close contact with the valve core, and the sealing performance is good, which can be used for long-term use. The wear of the sealing pair plays an automatic compensation function.

Since the valve core is designed as a V-shaped hemispherical structure, the medium flow channel no longer runs through the inside of the valve core, and no longer affects the diameter of the valve. The volume of the valve (ball valve) is reduced, the material is saved, and the cost is low.

Since the valve core is designed as a V-shaped hemispherical structure, the flow channel space where the valve core is located is large, the medium flows smoothly, crystallization or impurities are carried out of the valve, and will not accumulate in the valve cavity to cause blockage, which completely solves the three-way ball valve. The problem that the valve chamber is easy to deposit medium.

Due to the two V-shaped cutouts of the valve core, it has a shearing effect on the valve seat, the medium will not stick to the spherical surface, and it has a self-cleaning function, thereby effectively protecting the sealing surface and preventing the valve from being stuck.

The working principle of the V-shaped three-way regulating ball valve in this embodiment is that A and B are two medium inflow channels, and C is a medium outflow channel. When the flow direction is to be switched, the valve core is rotated so that the sealing working surface of the valve core blocks the A or B channel. , then B and C are connected, or A and C are connected; when the flow is mixed, turn the valve core so that the two V-shaped cutouts of the valve core are respectively connected with the A and B channels to realize the mixed flow, and the flow rate and ratio can be achieved when the flow is mixed. Adjustment (realized by the size of the flow port in the overlapping part of the V-shaped notch and the A and B channel ports).

Claims (4)

1. a V-type three-way regulating ball valve, comprise valve body (1), valve gap (5), spool (2), valve rod, described spool (2) is arranged in valve body, described valve body (1) and valve gap (5) are combined to form two MEDIA FLOW stand in channel (A, B) and one medium flow pass (C), the internal orifice of each MEDIA FLOW stand in channel is respectively equipped with valve seat (3), it is characterized in that: described spool (2) is for semiglobe and spool has two v-notch, spool is by valve rod driven rotary, the sealed working face of spool (2) is sphere, the corresponding valve seat of sealing working surface seals, two v-notch are arranged on the both sides of sealed working face.

2. a kind of V-type three-way regulating ball valve as claimed in claim 1, is characterized in that: described spool (2) and valve rod adopt spline joint, and valve rod comprises upper valve rod (9) and lower valve rod (7), and upper lower valve rod adopts self oiling bearing (8) to be fixed on valve body.

3. a kind of V-type three-way regulating ball valve as claimed in claim 1, is characterized in that: the pretension sealing force of described valve seat and spool adopts wavy spring (4).

4. a kind of V-type three-way regulating ball valve as claimed in claim 1, it is characterized in that: each v-notch is symmetrical arranged up and down by horizontal plane, two v-notch are symmetrical arranged by before and after vertical plane, spool (2) rotates and sealed working face is moved between two valve seats (3), the circulation area change in percentage respectively of two flow passage openings of seal spool working surface both sides.