CN211693634U - Four-way ball valve and valve core thereof - Google Patents

Abstract

The utility model relates to an improved valve core for a four-way ball valve, which comprises a ball shell, wherein the ball shell is provided with a first channel and a second channel which are communicated and used for fluid to flow through; wherein, in a cross section along the rotation axis of the spherical shell, the first channel and the second channel are both circular and symmetrically arranged with respect to the rotation axis of the spherical shell; and in a large circular cross section perpendicular to the rotation axis, the first and second channels are each arc-shaped and extend in opposite directions, are arranged symmetrically with respect to the rotation axis, both have a uniform diameter over their entire extension length, and are evenly distributed over the circumference of the large circular cross section over a total of four openings formed in the surface of the spherical shell. The utility model discloses still relate to a cross ball valve.

Description

Four-way ball valve and valve core thereof

Technical Field

The utility model relates to a ball valve especially relates to a four-way ball valve and case thereof.

Background

Ball valves typically include a valve body provided with a plurality of fluid ports and a spherical valve core received in an interior cavity of the valve body, the valve core providing a fluid passageway. When the valve works, the valve core is driven by external force to rotate in the valve body, and different interfaces are communicated to form a passage so as to change a flow path in the valve body or adjust the flow rate in the flow path.

Good ball valves need to be capable of being opened and closed quickly, operated easily, have low fluid resistance, no vibration and low noise. In addition, the simple structure, relative small volume and light weight of the ball valve are the sought technical goals.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve prior art's ball valve to can reduce the volume and the weight of ball valve, and make the ball valve have less flow resistance, the operation is more stable etc..

To this end, an improved valve core for a four-way ball valve is provided, which comprises a ball shell, a valve body and a valve core, wherein the ball shell is provided with a first channel and a second channel which are communicated and used for fluid to flow through; wherein, in a cross section along the rotation axis of the spherical shell, the first channel and the second channel are both circular and symmetrically arranged with respect to the rotation axis of the spherical shell; and in a large circular cross section perpendicular to the rotation axis, the first and second channels are each arc-shaped and extend in opposite directions, are arranged symmetrically with respect to the rotation axis, both have a uniform diameter over their entire extension length, and are evenly distributed over the circumference of the large circular cross section over a total of four openings formed in the surface of the spherical shell.

Advantageously, in a cross section along the axis of rotation of the spherical shell, both ends of the spherical shell along the axis of rotation are truncated to form an upper end face and a lower end face parallel to each other, said upper end face and lower end face being symmetrical with respect to said great circle cross section.

Advantageously, a first, sunken recess is provided in the upper end face, from which recess the rotary shaft projects along the axis of rotation.

Advantageously, a plurality of first ribs extending in a straight line extend from a bottom surface of the first groove, and each of the first ribs extends from a circumferential surface of the rotating shaft to a side surface of the first groove in a radial direction.

Advantageously, four of said first ribs are included, each first rib being offset from the respective said openings of said first and second channels in a cross section along the axis of rotation of the spherical shell.

Advantageously, a second annular rib arranged around the rotation axis extends from the bottom surface of the first groove, and the second annular rib intersects with all the first annular ribs.

Advantageously, a plurality of linearly extending third ribs extend from a bottom surface of the first groove, and each of the third ribs extends radially from a circumferential surface of the rotating shaft to the second rib.

Advantageously, a plurality of fourth ribs partially surrounding the rotation shaft extend from the bottom surface of the first groove, and each fourth rib extends only between two adjacent first ribs.

Advantageously, a second, sunken groove is provided in the lower end face, from the bottom of which extends a locating spigot along the axis of rotation of the ball housing, which is adapted to cooperate with a corresponding locating formation in the valve seat of the ball valve to restrict the ball housing to rotation only about the axis of rotation of the ball housing.

The invention also relates to a ball valve comprising a valve cartridge according to the invention.

Drawings

Further details and advantages of the invention will be described in further detail below with reference to the accompanying drawings, in which:

FIG. 1 shows an exploded schematic view of a four-way valve according to the present invention;

FIG. 2 is a perspective view of the valve cartridge of FIG. 1;

FIG. 3 is a cross-sectional view of the valve cartridge of FIG. 2 along the axis of rotation of the ball housing;

FIG. 4 is a great circle cross-sectional view of the valve cartridge of FIG. 2 in a direction perpendicular to the axis of rotation of the ball housing;

FIG. 5 is a perspective view of the valve cartridge of FIG. 2 from another perspective;

fig. 6-7 show two operating positions of the valve spool of the four-way valve of fig. 1.

The drawings described above are for illustration and example only and are not drawn to scale nor are all of the components or details associated with a particular use environment fully drawn. Those skilled in the art will appreciate that the conception and specific use of the invention may be readily utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention.

Detailed Description

The terms "first," "second," and the like, as may be used in the following description, are not intended to limit any order, but merely distinguish between various separate components, features, structures, elements, and the like, which may be the same, similar, or different.

Figure 1 shows an exploded view of one example of a four-way ball valve according to the present invention. The four-way valve includes a valve body 10 and a valve spool 20 received in an interior cavity of the valve body. The valve body 10 has four ports 12 communicating with an internal cavity, and a valve seat 30 is disposed at the junction of the internal cavity and each port 12 to form a seal between the ports 12 and the valve spool 20. The valve body 10 is also provided with a bonnet 11 which is fixedly fitted to the valve body to seal the entire valve chamber.

Fig. 2 shows the spool of the four-way ball valve of fig. 1 in greater detail. As shown in the figure, the valve core comprises a ball shell (40), and two ends of the ball shell (40) are cut off in parallel to form an upper end surface and a lower end surface which are parallel to each other. Wherein, the middle of the spherical shell is provided with a first channel 50 and a second channel 60 which are penetrated through for the fluid to flow through, the upper end surfaces of the two ends of the spherical shell extend out of the rotating shaft 91, and the lower end surfaces extend out of the positioning protruding shaft 92. The shaft 91 is provided with a toothed surface to enable connection with a transmission to drive rotation of the spherical shell. The locating boss 92 is arranged and adapted to cooperate with a corresponding locating formation in the valve seat of the ball valve to restrict the ball housing 40 to rotation only about its axis of rotation. The ball shell is arranged to rotate in the valve core about its axis of rotation, for which purpose the spindle 91 and the positioning stub shaft 92 both extend along the axis of rotation of the ball shell.

With continued reference to fig. 3 and 4, the configuration of the first and second passages 50, 60 within the spherical shell is shown in cross-section, where fig. 3 is a cross-sectional view along the axis of rotation of the spherical shell 40 and fig. 4 is a cross-sectional view along a line perpendicular to the axis of rotation, the cross-section having the largest diameter compared to any other cross-section, and therefore being referred to as a "great circle cross-section". In the cross-section of fig. 3, the first and second channels 50, 60 are each circular and are arranged symmetrically with respect to the rotational axis of the spherical shell. In the cross section of fig. 3, the upper end surface and the lower end surface of the spherical shell are symmetrical with respect to the large circular cross section. In the cross section of fig. 4, the first and second channels 50, 60 have opposite directions of extension and are arranged symmetrically with respect to the axis of rotation, the first and second channels 50, 60 each have a uniform diameter over their entire extension, and a total of four openings, which the first and second channels 50, 60 form on the surface of the spherical shell 40, are evenly distributed over the circumference of the large circular cross section.

Fig. 5 is a perspective view of the valve cartridge of fig. 2 from another perspective, particularly illustrating the weight-reducing and reinforcing structures provided in the ball housing. Specifically, a first recess 70 is provided at the upper end surface of the spherical shell, and a rotation shaft 91 protrudes from the first recess 70 along the rotation axis. In addition, a second, sunken indentation 80 is provided in the lower end surface of the ball housing, from the bottom surface of which extends a locating boss 92 along the axis of rotation of the ball housing, the locating boss 92 being adapted to cooperate with a corresponding locating feature in the valve seat of the ball valve to limit the rotation of the ball housing 40 to only the axis of rotation of the ball housing (see fig. 3).

Four first ribs 71 extending in a straight line extend from the bottom surface of the first groove 70, each first rib 71 extends from the circumferential surface of the rotating shaft 91 to the side surface of the first groove 70 in the radial direction of the upper end surface, and each first rib 71 is offset from the corresponding openings of the first and second passages 50, 60 in a cross section along the rotational axis of the ball housing 40. Further, on the bottom surface of the first groove 70, there further extends an annular second rib 72 disposed around the rotation shaft 91, and the second rib 72 intersects with all of the first ribs 71. Further, a plurality of linearly extending third ribs 73 extend from the bottom surface of the first groove 70, and each of the third ribs 73 extends from the circumferential surface of the rotating shaft 91 to the second rib 72 along the radial direction of the upper end surface. Further, a plurality of fourth ribs 74 extending around the rotation shaft 91 extend from the bottom surface of the first groove 70, and each fourth rib 74 extends only between two adjacent first ribs 71.

A specific example of the use of the four-way valve according to the present invention will be described below with reference to fig. 6 to 7. Shown in the figure is a cooling circuit for cooling a battery and charging equipment in a vehicle, in which a four-way ball valve has a first inlet D and a second inlet B, a first outlet a and a second outlet C.

In fig. 6, by rotating the valve body so that the first inlet D communicates with the first outlet a and the second inlet B communicates with the second outlet C, two mutually independent circuits are formed, wherein the circuit in the upper left corner of the figure is used for cooling the battery by the cooler and the circuit on the right side of the figure is used for cooling the motor by the radiator. In fig. 7, the four-way ball valve is adjusted such that the first inlet D communicates with the second outlet C and the second inlet B communicates with the first outlet a, thereby forming a large circuit that can cool the motor and the battery using a cooler and a radiator simultaneously or separately.

The foregoing description is only exemplary of the principles and spirit of the invention. It will be appreciated by those skilled in the art that changes may be made in the described examples without departing from the principles and spirit thereof, and that such changes are contemplated by the inventors and are within the scope of the invention as defined in the appended claims.

Claims (10)

1. A valve core for a four-way ball valve comprises a ball shell (40), wherein the ball shell (40) is provided with a first channel (50) and a second channel (60) which are communicated and used for fluid to flow through;

it is characterized in that the preparation method is characterized in that,

in a cross section along the rotation axis of the spherical shell (40), the first passage (50) and the second passage (60) are both circular and are symmetrically arranged with respect to the rotation axis of the spherical shell; and is

In a large circular cross section perpendicular to the axis of rotation, the first channel (50) and the second channel (60) are each circular-arc-shaped and extend in opposite directions, are arranged symmetrically with respect to the axis of rotation, have a uniform diameter over the entire extension of each, and are distributed uniformly over the circumference of the large circular cross section for a total of four openings formed in the surface of the spherical shell (40).

2. Valve cartridge according to claim 1, characterized in that, in a section along the axis of rotation of the ball shell (40), both ends of the ball shell along the axis of rotation are truncated to form an upper end face and a lower end face parallel to each other, which are symmetrical with respect to the great circle section.

3. The valve cartridge according to claim 2, characterized in that a first, sunken groove (70) is provided in the upper end face, from which groove (70) a spindle (91) projects along the axis of rotation.

4. The valve cartridge according to claim 3, wherein a plurality of first ribs (71) extending linearly extend from a bottom surface of the first groove (70), and each first rib (71) extends radially from a circumferential surface of the rotary shaft (91) to a side surface of the first groove (70).

5. The valve cartridge according to claim 4, characterized by comprising four first ribs (71), each first rib (71) being offset from the respective openings of the first and second channels (50, 60) in a cross section along the axis of rotation of the ball housing (40).

6. The valve cartridge according to claim 4, characterized in that a second rib (72) of annular shape arranged around the rotation axis (91) further extends from the bottom surface of the first groove (70), the second rib (72) intersecting all the first ribs (71).

7. The valve cartridge according to claim 6, wherein a plurality of linearly extending third ribs (73) further extend from a bottom surface of the first groove (70), and each third rib (73) radially extends from a circumferential surface of the rotary shaft (91) to the second rib (72).

8. The valve cartridge according to claim 7, wherein a plurality of fourth ribs (74) partially surrounding the rotation shaft (91) further extend from a bottom surface of the first groove (70), each fourth rib (74) extending only between adjacent two first ribs (71).

9. The valve cartridge of claim 2, wherein a second recessed groove (80) is provided in the lower end surface, and a locating boss (92) extends from a bottom surface of the second recessed groove along the rotational axis of the ball housing, the locating boss (92) being adapted to cooperate with a corresponding locating feature in the valve seat of the ball valve to limit the ball housing (40) to only rotate about the rotational axis of the ball housing.

10. A ball valve, characterized in that it comprises a valve cartridge according to any one of claims 1-9.

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