CN111255677A - Spherical valve group capable of changing valve face operation position - Google Patents
Spherical valve group capable of changing valve face operation position Download PDFInfo
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- CN111255677A CN111255677A CN202010189361.0A CN202010189361A CN111255677A CN 111255677 A CN111255677 A CN 111255677A CN 202010189361 A CN202010189361 A CN 202010189361A CN 111255677 A CN111255677 A CN 111255677A
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- valve
- seat
- liquid inlet
- valve core
- spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
- F04B53/1017—Semi-spherical ball valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1087—Valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/109—Valves; Arrangement of valves inlet and outlet valve forming one unit
Abstract
The invention relates to a spherical valve group capable of changing the operation position, which comprises a valve seat, a liquid inlet component and a liquid outlet component, wherein a valve core of the liquid inlet component and the liquid outlet component adopts a hollow hemispherical valve core, the outer spherical surface of the valve core is matched with the valve surface of the valve seat by a spherical surface, the outer circle of the valve core is in clearance fit with the inner hole of a valve cover, so that the valve core can freely slide and rotate within 45 degrees from left to right in the valve cover; the inner spherical surface of the valve core is matched with the outer spherical surface of the spring seat, and the spring seat only moves up and down on a central line under the limit of spring force, so that the hollow hemispherical valve core continuously swings and rotates in an arc shape in the opening and closing process. The reciprocating circulation is carried out, so that the valve core and the valve seat can not be in the same valve face position during opening and closing, the valve core and the valve seat can be continuously opened and closed, the sealing position of the valve core and the valve seat can be continuously changed to prevent the leakage, the sealing and the service life are improved, the requirements of various fields for conveying high-pressure high-viscosity granular sand-containing impurity media are met, and the service life, the efficiency and the reliability of the reciprocating pump can be improved.
Description
Technical Field
The invention relates to a spherical valve group capable of changing the operation position of a valve face.
Background
The reciprocating plunger pump is one of volumetric pumps, and is formed by matching a power end, a hydraulic end and an engine into a reciprocating pump capable of pressurizing and conveying various liquids. The pump has the main functions of quantitatively conveying various high-pressure media, has high efficiency, is the first of other volumetric pumps, and is indispensable equipment for conveying high-pressure liquid in the current industrial field.
However, along with the expansion of the application field, the characteristics of various media are different, and higher requirements are provided for the efficiency, the service life and the reliability of the reciprocating pump due to different viscosities and proportions of particle-containing impurities in the conveying media. At present, a common problem occurs in various fields, and in the process of conveying media containing particle impurities, the media are filtered by a filter and enter a pump cavity, otherwise, the pump cannot work normally. And the filter is cleaned frequently, which is usually about several hours, otherwise the pump is high in vibration intensity after being emptied, and the pipeline is shattered and the valve assembly in the hydraulic end is damaged.
The valve group matched in the hydraulic end of the traditional reciprocating pump can be a cone valve, a flat valve or a ball valve, and the opening and closing positions of the three valves are parallel in movement, so that the valve surface can be contacted with particle impurities during the opening and closing operation to cause poor sealing and puncture, particularly, the operation condition of the valve can be influenced when the medium has high consistency and contains the particle impurities, and the conditions of unsmooth opening and closing, puncture of the valve surface to the pump cavity and the like often occur. Therefore, the efficiency of the pump is very low, the service life of the valve component is very short, the reliability of the pump is very low, and the normal work of the pump is seriously influenced, thereby bringing serious influence to various industrial fields.
Therefore, the valve set matched with the existing reciprocating pump cannot meet the conveying of high-viscosity and high-pressure media containing particle impurities.
Disclosure of Invention
The invention aims to solve the technical problem of providing a spherical valve group capable of changing the running position of a valve face aiming at the current situation of the prior art, so that the valve face position can be changed during the opening and closing movement, particle impurities are prevented from damaging the valve face seal, the valve opening resistance is reduced, the requirements of various fields for conveying high-pressure high-viscosity particle sand-containing impurity media are met, and the running life, the efficiency and the reliability of a reciprocating pump are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the spherical valve group capable of changing the running position of the valve surface comprises a valve seat, and a liquid inlet assembly and a liquid discharge assembly which are oppositely arranged at two ends of the valve seat; the liquid inlet assembly and the liquid discharge assembly respectively comprise a valve core, a spring and a valve cover, wherein the valve core is movably matched on the valve surface of the valve seat, and the valve cover covers the valve core and the spring therein and is fixed with the valve seat; the method is characterized in that:
the valve core is a hollow hemispherical valve core with spherical surfaces inside and outside, the spherical surface outside the valve core is matched with the valve surface of the valve seat, and a raised circular truncated cone is arranged at the bottom in the hollow cavity of the valve core;
the liquid inlet assembly and the liquid discharge assembly respectively comprise a spring seat, the outer surface of the spring seat is a spherical surface which is matched with the inner spherical surface of the valve core, the bottom of the spring seat is provided with a through hole, and the aperture of the through hole is larger than the outer diameter of the circular table, so that the circular table can be sleeved in the through hole, and the valve core can freely swing and rotate;
the spring is arranged between the spring seat and the valve cover, so that the spring seat only reciprocates in the axial direction under the limit of the spring force;
the inner hole of the valve cover is internally provided with a convex protrusion part which extends along the axial direction, the top end of the convex protrusion part is a stroke limit point for opening the valve core, and the convex protrusion part is a spherical surface and is opposite to the end plane of the circular truncated cone and can collide with the end plane.
Furthermore, the total height of the hollow hemispherical valve core exceeds half of the diameter of the ball, 3/5 which does not exceed the diameter of the ball is preferred, the valve core is in clearance fit with the inner hole of the valve cover, and the inner hole has guiding and limiting functions, so that the valve core can freely swing and rotate within 45 degrees in the hole and cannot be clamped with the inner hole.
Furthermore, the spring seat is a hemispherical body with spherical surfaces on the inner side and the outer side, a circular step is arranged on the end surface of the spring seat and used for positioning one end of the spring, and the other end of the spring is positioned on the valve cover, so that the uniform stress of the spring is ensured.
Furthermore, the protruding part is in a conical cylinder shape with a spherical top end, and a circular step for positioning the spring is arranged at the tail end of the protruding part, so that the spring is positioned between the step and the spring seat.
Furthermore, a plurality of flow passage holes are circumferentially distributed on the upper part of the valve core and the cover part of the valve cover and used for discharging media in the cavity.
Furthermore, the valve cover of the liquid inlet assembly is different from the valve cover of the liquid outlet assembly in structure, a positioning convex part higher than the cover surface of the valve cover is further convexly extended on the valve cover of the liquid outlet assembly and is matched and positioned with a flange, and the flange is fixed with the pump body, so that the whole valve group can be fixed in a valve group channel of the pump body.
Furthermore, flow passage holes are formed in the outer circles of the valve covers of the liquid inlet assembly and the liquid discharge assembly to respectively form a liquid inlet flow passage hole and a liquid discharge flow passage hole; the excircle of the valve seat is provided with a liquid inlet channel which is communicated with a liquid inlet valve surface and the liquid inlet channel hole to form a liquid inlet channel of the valve group; the end surface of the valve seat, which is positioned at the periphery of the liquid inlet valve surface, is provided with a liquid discharge pore channel which penetrates through the liquid discharge valve surface and the liquid discharge flow passage hole to form a liquid discharge channel of the valve group; the liquid inlet valve face is a valve face matched with a valve core of the liquid inlet assembly and the liquid discharge valve face is a valve face matched with a valve core of the liquid discharge assembly and the valve seat.
Furthermore, the valve seat is of an integrated structure, so that the liquid inlet assembly and the liquid discharge assembly are arranged on the same valve seat; or the valve seat is of a split structure, so that the liquid inlet component and the liquid discharge component are arranged on the corresponding valve seat and then combined together, and the two valve seat structural types can achieve the purpose of the invention.
Further, the valve seat may have various shapes, such as a cylindrical shape with an outer circle, a cylindrical shape with a tapered outer circle, and the like. The shapes are different, the sealing and positioning modes are different, the excircle is conical, and the conical excircle can be used for positioning and sealing; the excircle is cylindrical, and the excircle is sealed by a 0-shaped sealing ring and positioned by adopting the end face of a valve seat; or the upper end and the lower end of the valve seat are sealed by rectangular sealing rings, the end face of the valve seat is positioned, and the like.
Furthermore, an anti-loose ring is arranged between the valve cover and the valve seat so as to prevent looseness of the valve seat during matching.
Compared with the prior art, the invention has the advantages that: a hollow hemispherical valve core is adopted, and the total height exceeds half of the diameter of the ball; the outer spherical surface of the valve core is matched with the valve surface of the valve seat by a spherical surface, and the outer circle of the valve core is in clearance fit with the inner hole of the valve cover, so that the valve core can freely slide and rotate in 45 degrees left and right in the valve cover; the inner spherical surface of the valve core is matched with the outer spherical surface of the spring seat, and the spring seat only moves up and down on a central line under the limit of spring force, so that the hollow hemispherical valve core continuously swings and rotates in an arc shape in the opening and closing process and does not interfere with the acting force of the spring. The reciprocating circulation is carried out, so that the valve core and the valve seat can not be in the same valve face position during opening and closing, the valve core and the valve seat can be continuously opened and closed, the sealing positions of the valve core and the valve seat can be continuously changed, particle impurities are prevented from damaging the valve face seal, the valve opening resistance is reduced, the requirements of various fields for conveying high-pressure high-viscosity particle sand-containing impurity media are met, and the service life, the efficiency and the reliability of the reciprocating pump are improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2a is a schematic structural diagram of a valve seat according to an embodiment of the present invention.
Fig. 3 is a left side view of fig. 2 a.
Fig. 2b, 2c, 2d and 2e are schematic views of valve seats with different structures.
Fig. 4 is a schematic structural diagram of a valve core according to an embodiment of the invention.
Fig. 5 is a sectional view a-a of fig. 4.
Fig. 6 is a schematic structural view of a spring seat according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an inlet valve cover according to an embodiment of the invention.
Fig. 8 is a top view of fig. 7.
Fig. 9 is a schematic structural view of a drain valve cover according to an embodiment of the present invention.
Fig. 10 is a top view of fig. 9.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the ball valve assembly of the present invention adopts an integrated design of a liquid inlet valve and a liquid outlet valve, wherein the liquid inlet valve is arranged below the liquid outlet valve, and the liquid inlet valve and the liquid outlet valve are arranged above the liquid inlet valve, and comprises a valve seat 10 and liquid inlet and outlet assemblies 20, 30, wherein:
the valve seat is as shown in fig. 2a and fig. 3, and is a one-piece body, the liquid inlet and outlet components 20, 30 are shared on the valve seat 10, the liquid inlet valve face 11 and the liquid outlet valve face 18 are arranged at both ends of the valve seat 10, and are spherical faces which can be matched with the outer spherical surface 21 of the hollow hemispherical valve core, and the valve faces with different widths can be arranged according to different pressures. The inner sides of the liquid inlet valve surface 11 and the liquid discharge valve surface 18 are respectively formed into conical cylindrical table- shaped holes 12 and 17 which are respectively communicated with the respective valve surfaces. The end face of one end of the valve seat 10 and the excircle of the other end are respectively provided with an annular groove 14 and an annular groove 16 which are respectively used for embedding a rectangular sealing ring and an O-shaped sealing ring so as to realize the connection and sealing between the valve seat 10 and the pump body. The liquid inlet channel 15 of the valve group is arranged on the excircle of the lower position of the valve seat, can be a plurality of circular holes or elliptical holes, and is communicated with the first conical cylindrical table-shaped hole 12 on the inner side of the liquid inlet valve surface 11 and the liquid inlet valve surface 11. The liquid discharge channel 13 is opened on the end face of the valve seat at the periphery of the liquid inlet valve face 11, and can be a plurality of circular holes uniformly distributed in the circumferential direction and communicated with a second conical cylindrical table-shaped hole 17 at the inner side of the liquid discharge valve face 18 and the liquid discharge valve face 18.
The liquid inlet assembly 20 and the liquid discharging assembly 30 each include a valve core, a spring seat, a spring, and a valve cover, specifically:
the liquid inlet assembly 20 is disposed at the lower end of the valve seat 10, and includes a liquid inlet valve element 2a, a liquid inlet spring seat 3a, a liquid inlet spring 4a and a liquid inlet valve cover 5a, as shown in fig. 4 and 5, the liquid inlet valve element 2a is a hollow hemispherical valve element with spherical surfaces inside and outside, the spherical surface 21 of the liquid inlet valve element is matched with the spherical surface of the liquid inlet valve surface 11, so that the liquid inlet valve element can slide and rotate freely on the liquid inlet valve surface 11, and the spherical surface 24 of the liquid inlet valve element is matched with the liquid inlet spring seat 3 a. The bottom in the hollow cavity of the hollow hemispherical valve core is provided with a convex round table 22, the end surface of the round table is a plane, and the end plane 23 is matched with a spherical surface 56 on the liquid inlet valve cover and used for limiting the height of a flow channel when the hollow hemispherical valve core 2a and the liquid inlet valve surface 11 of the valve seat are opened. In order to facilitate the discharge of the medium in the cavity, the upper part of the hollow hemispherical valve core 2a is also provided with a plurality of flow passage holes 25 which are uniformly distributed in the circumferential direction. The hollow hemispherical valve core 2a is slightly larger than a hemisphere, the total height exceeds half of the diameter of the sphere, and 3/5 which does not exceed the diameter of the sphere is preferred, so that the valve core 2a can not be clamped in the inner hole 55 of the liquid inlet valve cover 5a, and can freely swing and rotate within 45 degrees at left and right.
Referring to fig. 6, the liquid inlet spring seat 3a is also a hemispherical body in appearance, and both the inside and the outside are spherical surfaces, and the outer spherical surface 31 is in sliding fit with the inner spherical surface 24 of the hollow hemispherical valve element. The end surface of the liquid inlet spring seat is provided with a circular step 34 for positioning the liquid inlet spring 4 a. The bottom of the liquid inlet spring seat 3a is provided with a circular through hole 32, the aperture of the through hole 32 is larger than the diameter of the circular truncated cone 22 in the valve core, so that the liquid inlet spring seat 3a is sleeved on the circular truncated cone 22, the left-right swinging rotation of the valve core 2a cannot be influenced, and when the valve core 2a swings and rotates, the spring seat 3a can still keep moving up and down on the axis under the action of spring force, and the two do not interfere with each other.
Referring to fig. 7 and 8, a hollow hemispherical valve core 2a, a liquid inlet spring seat 3a and a liquid inlet spring 4a are arranged in a liquid inlet valve cover 5a, the liquid inlet valve cover 5a is fixed with a valve seat 10, an inner thread and an outer thread are arranged between the two for mutual connection and are connected together through a thread, a chamfer surface for arranging an anti-loosening ring 40 is arranged at the thread end of the valve cover, so that the valve seat 10 is prevented from loosening during matching, and the anti-loosening ring 40 can adopt an O-shaped rubber spring.
The inner hole 55 of the liquid inlet valve cover is in clearance fit with the outer circle of the hollow hemispherical valve core 2a, and the inner hole 55 has guiding and limiting effects on the valve core 2a, so that the valve core 2a cannot be clamped with the hole when opening, closing and swinging in the hole, and can swing up and down and rotate within 45 degrees left and right. The excircle and the cover part of the liquid inlet valve cover 5a are both provided with a plurality of flow passage holes, wherein the flow passage hole on the excircle of the valve cover is a liquid inlet flow passage hole 51a, and a liquid inlet passage of the valve group consists of a liquid inlet passage hole 15, a liquid inlet valve surface 11 and the liquid inlet flow passage hole 51a which are communicated. When the plunger of the reciprocating pump moves backwards, the hollow hemispherical valve core 2a is opened, and a medium enters the plunger cavity from the liquid inlet channel 15 on the excircle of the valve seat through the first conical cylindrical table-shaped hole 12, the liquid inlet valve surface 11 and the liquid inlet channel hole 51a on the excircle of the valve cover. The flow passage holes 52 on the cover part of the liquid inlet valve can make the medium in the cover flow out, and all the holes are uniformly distributed in the circumferential direction.
The center of the inner hole of the liquid inlet valve cover is provided with a convex part 53 extending along the axial direction, the convex part 53 is in a conical cylinder shape, the top end of the convex part is a spherical surface 56, the spherical surface 56 is a limit point when the hollow hemispherical valve core is opened, and the spherical surface is opposite to the circular truncated cone end plane 23 of the valve core and is arranged coaxially with the spring seat 3a, the valve core 2a and the circular truncated cone 2a of the valve core. Thus, when the hollow hemispherical valve core 2a is opened and moved, the end plane 23 of the circular truncated cone touches the spherical surface 56 for limiting, the top plane of the valve core can freely swing within 45 degrees left and right along with the inner hole 55 of the liquid inlet valve cover, and the running position of the liquid inlet valve surface is continuously changed to open and close. The end of the protruding part 53 is provided with a circular step 54 for positioning the liquid inlet spring, and the liquid inlet spring 4a is positioned between the step 54 and the circular step 34 on the end surface of the liquid inlet spring seat, so that the spring seat 3a can only do axial reciprocating movement under the vertical stress of the spring, and the uniform stress of the spring is ensured.
The liquid discharge assembly 30 is disposed at the upper end of the valve seat 10, and includes a liquid discharge valve element 2b, a liquid discharge spring seat 3b, a liquid discharge spring 4b, and a liquid discharge valve cover 5b, wherein the liquid discharge valve element 2b is disposed on the liquid discharge valve surface 18, and is also a hollow hemispherical valve element, which has the same structure as the liquid inlet valve element 2a except for the difference in height of the valve element. The liquid discharge spring seat 3b and the liquid inlet spring seat 3a have the same structure and are universal parts. As shown in fig. 9 and 10, the flow passage hole on the outer circle of the drain valve cover 5b is a drain flow passage hole 51b, and the drain passage of the valve block is composed of the drain passage hole 13, the drain valve face 18 and the drain flow passage hole 51b which are communicated with each other. When the plunger of the reciprocating pump moves forward, the liquid inlet valve core 2a is closed, pressure is generated in the plunger cavity, and a medium enters the liquid outlet valve core 2b from the liquid outlet pore channel 13 on the periphery of the liquid inlet valve surface of the valve seat, so that the medium is discharged through the liquid outlet valve surface 18 and the liquid outlet pore channel 51b on the excircle of the valve cover through the second conical cylindrical table-shaped hole 17. In addition, because the flowing back end is the one end that will fix a position and fix with the pump body, consequently the flowing back valve bonnet 5b structure still is different with feed liquor valve bonnet 5a, still the protruding location convex part 57 that has a height to go out flowing back valve bonnet capping that has stretched on flowing back valve bonnet 5b, is equipped with the internal thread hole on the location convex part 57, can fix a position with the flange cooperation, and rethread flange is fixed mutually with the pump body, can make whole valves fix in the valves passageway of the pump body like this.
The working principle of the valve bank is as follows:
because the valve cores 2a and 2b are hollow hemispherical valve cores, the outer spherical surfaces 21 of the valve cores are matched with the valve surfaces 11 and 18 of the valve seats, the outer circles of the valve cores are in clearance fit with the inner hole 55 of the valve cover, and the valve cores can freely swing and rotate within 45 degrees from left to right in the inner hole of the valve cover. Since the total height of the valve elements 2a, 2b exceeds half the diameter of the ball, they do not get stuck in the valve housing bore 55 during the opening and closing oscillation. The hollow cavity of the valve core is internally provided with a circular truncated cone plane 23 used as an opening limiting point, a conical cylindrical protruding part 53 with a spherical surface 56 at the top end is correspondingly arranged in the inner hole of the valve cover, when the valve core is opened and moves upwards or downwards, the circular truncated cone plane 23 is limited by the spherical surface 56 at the top end of the protruding part, the circular truncated cone plane 23 can freely swing within 45 degrees left and right along the spherical surface 56, and at the moment, the running position of the valve surface is continuously changed to be opened and closed. Because the valve cores 2a and 2b are matched with the spring seats 3a and 3b by spherical surfaces, and the spring seats 3a and 3b only do reciprocating movement under the vertical stress of the spring, the hollow hemispherical valve cores 2a and 2b can continuously swing and rotate in an arc shape in the opening and closing process without interfering with the acting force of the spring. Thus, the valve core and the valve seat can not be in one valve face position during opening and closing by reciprocating circulation, and the valve core and the valve seat can be continuously opened and closed and the sealing position can be continuously changed to prevent the puncture, thereby improving the sealing and the service life. The valve set can be matched with the hydraulic end of each reciprocating pump.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that various modifications or improvements can be made to the present invention by those skilled in the art without departing from the principle of the present invention, and these are considered to be within the scope of the present invention. Such as: the valve seat 10 of the valve group can be in various forms, as shown in fig. 2 b-2 e, the outer circle of the valve seat can be in a cylindrical shape, and the outer circle of the valve seat can also be in a cylindrical shape with a conical outer circle, and the like. The shapes are different, the sealing and positioning modes are different, the excircle is conical, and the conical excircle can be used for positioning and sealing; the excircle is cylindrical, and the excircle is sealed by a 0-shaped sealing ring and positioned by adopting the end face of a valve seat; or the upper end and the lower end of the valve seat are sealed by rectangular sealing rings, and the end face of the valve seat is positioned; or the excircle of the valve seat is provided with threads to be connected with the inner threads of the pump body, and the excircle or the end plane is sealed, etc. In addition, the valve seat 10 may be a separate combination structure, and the liquid inlet assembly 20 and the liquid outlet assembly 30 are installed on the corresponding valve seat and combined together.
Claims (10)
1. A spherical valve group capable of changing the running position of a valve face comprises a valve seat, and a liquid inlet assembly and a liquid discharge assembly which are oppositely arranged at two ends of the valve seat; the liquid inlet assembly and the liquid discharge assembly respectively comprise a valve core, a spring and a valve cover, wherein the valve core is movably matched on the valve surface of the valve seat, and the valve cover covers the valve core and the spring therein and is fixed with the valve seat; the method is characterized in that:
the valve core is a hollow hemispherical valve core with spherical surfaces inside and outside, the spherical surface outside the valve core is matched with the valve surface of the valve seat, and a raised circular truncated cone is arranged at the bottom in the hollow cavity of the valve core;
the liquid inlet assembly and the liquid discharge assembly respectively comprise a spring seat, the outer surface of the spring seat is a spherical surface which is matched with the inner spherical surface of the valve core, the bottom of the spring seat is provided with a through hole, and the aperture of the through hole is larger than the outer diameter of the circular table, so that the circular table can be sleeved in the through hole, and the valve core can freely swing and rotate;
the spring is arranged between the spring seat and the valve cover, so that the spring seat only reciprocates in the axial direction under the limit of the spring force;
the inner hole of the valve cover is internally provided with a convex protrusion part which extends along the axial direction, the top end of the convex protrusion part is a stroke limit point for opening the valve core, and the convex protrusion part is a spherical surface and is opposite to the end plane of the circular truncated cone and can collide with the end plane.
2. The valve ball set of claim 1, wherein: the total height of the hollow hemispherical valve core exceeds half of the diameter of the ball, and the hollow hemispherical valve core and the inner hole of the valve cover are in clearance fit, and the hollow hemispherical valve core can swing and rotate within 45 degrees left and right.
3. The valve ball set of claim 1, wherein: the spring seat is a hemispherical body with spherical surfaces inside and outside, and the end surface of the spring seat is provided with a circular step for positioning the spring.
4. The valve ball set of claim 1, wherein: the protruding part is in a conical cylinder shape with the top end being a spherical surface, and the tail end of the protruding part is provided with a circular step for positioning the spring.
5. The valve ball set of claim 1, wherein: and a plurality of flow passage holes are circumferentially distributed on the upper part of the valve core and the cover part of the valve cover.
6. The valve ball set of claim 1, wherein: the valve cover of the liquid inlet assembly is different from the valve cover of the liquid outlet assembly in structure, and a positioning convex part higher than the cover surface of the valve cover is further convexly extended on the valve cover of the liquid outlet assembly.
7. Valve ball according to any of claims 1 to 6, wherein: flow passage holes are formed in the outer circles of the valve covers of the liquid inlet assembly and the liquid discharge assembly to respectively form a liquid inlet flow passage hole and a liquid discharge flow passage hole; the excircle of the valve seat is provided with a liquid inlet channel which is communicated with a liquid inlet valve surface and the liquid inlet channel hole to form a liquid inlet channel of the valve group; the end surface of the valve seat, which is positioned at the periphery of the liquid inlet valve surface, is provided with a liquid discharge pore channel which penetrates through the liquid discharge valve surface and the liquid discharge flow passage hole to form a liquid discharge channel of the valve group; the liquid inlet valve face is a valve face matched with a valve core of the liquid inlet assembly and the liquid discharge valve face is a valve face matched with a valve core of the liquid discharge assembly and the valve seat.
8. The valve ball set of claim 1, wherein: the valve seat is of an integrated structure, so that the liquid inlet assembly and the liquid discharge assembly are arranged on the same valve seat; or the valve seat is of a split structure, so that the liquid inlet component and the liquid discharge component are arranged on the corresponding valve seat and then combined together.
9. The valve ball set of claim 1, wherein: the excircle of the valve seat is cylindrical, or the excircle of the valve seat is cylindrical with a conical excircle.
10. The valve ball set of claim 1, wherein: an anti-loose ring is arranged between the valve cover and the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010189361.0A CN111255677A (en) | 2020-03-18 | 2020-03-18 | Spherical valve group capable of changing valve face operation position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010189361.0A CN111255677A (en) | 2020-03-18 | 2020-03-18 | Spherical valve group capable of changing valve face operation position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111255677A true CN111255677A (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010189361.0A Pending CN111255677A (en) | 2020-03-18 | 2020-03-18 | Spherical valve group capable of changing valve face operation position |
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| CN (1) | CN111255677A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220235751A1 (en) * | 2019-11-18 | 2022-07-28 | Kerr Machine Co. | Fluid routing plug |
| US11859601B2 (en) | 2019-11-18 | 2024-01-02 | Kerr Machine Co. | Fluid routing plug |
| US11920587B2 (en) | 2019-11-18 | 2024-03-05 | Kerr Machine Co. | Fluid routing plug |
-
2020
- 2020-03-18 CN CN202010189361.0A patent/CN111255677A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220235751A1 (en) * | 2019-11-18 | 2022-07-28 | Kerr Machine Co. | Fluid routing plug |
| US11859611B2 (en) * | 2019-11-18 | 2024-01-02 | Kerr Machine Co. | Fluid routing plug |
| US11859601B2 (en) | 2019-11-18 | 2024-01-02 | Kerr Machine Co. | Fluid routing plug |
| US11920587B2 (en) | 2019-11-18 | 2024-03-05 | Kerr Machine Co. | Fluid routing plug |
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