CN214999518U

CN214999518U - Valve rod leak protection water formula ball valve that floats

Info

Publication number: CN214999518U
Application number: CN202120149270.4U
Authority: CN
Inventors: 吴文福; 郑梅片; 赖徽文
Original assignee: Kalfasci Holding Group Co ltd
Current assignee: Kalfasci Holding Group Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-12-03
Anticipated expiration: 2031-01-20

Abstract

The utility model relates to the technical field of valve equipment, in particular to a valve rod water leakage prevention type floating ball valve which is designed based on the defect that the valve rod of the valve in the prior art is easy to leak in the long-term screwing use process, the structure of the valve comprises a valve body, a valve seat, a valve rod, a ball body, a valve cover and the like, wherein the spherical surface of the ball body is arranged in a valve cavity formed by the valve body and the valve seat in a floating way, the lower end of the valve rod is movably connected with the assembly hole arranged at the upper end of the ball body, the bottom end of the assembly hole is provided with a through hole, the valve rod anti-leakage floating ball valve provided by the utility model is provided with a through hole arranged in the ball body, the valve rod can be jacked upwards by utilizing the pressure of fluid to be tightly attached to the thrust gasket, and the thrust gasket and the first O-shaped ring are mutually matched, so that the fluid in the floating ball valve is effectively prevented from leaking out from a gap between the valve rod and the valve body when the valve rod is rotated.

Description

Valve rod leak protection water formula ball valve that floats

Technical Field

The utility model relates to a valve equipment technical field, concretely relates to valve rod leak protection water formula ball valve that floats.

Background

The ball valve can divide into fixed ball valve and ball valve that floats according to spheroidal mounting structure, and the ball valve that floats can produce certain displacement and sticiss on the sealed face of exit end under the medium pressure effect, guarantees that the exit end is sealed, and present ball valve that floats simple structure, but the load that the spheroid bore working medium is too big, causes the damage of ball valve easily for the ball valve causes the leakage easily.

For example, a high-precision gear-adjusting floating ball valve device according to chinese patent application No. CN201720278041.6 includes a valve seat, a valve body passage, a connecting flange, a fine adjustment chamber, a first adjusting gear, a second adjusting gear, a rotating handle, a rotating wrench, a second rotating shaft, a ball, a valve body cover, and a first rotating shaft. Above-mentioned utility model's floating ball valve can realize controlling the rotary switch of ball valve with high accuracy nature to the realization, but the structure that the cooperation was used between its valve rod and the valve body is fairly simple, when the ball valve twisted repeatedly soon the use, easily because of there is the clearance and lead to the ball valve at fluidic leakage between valve rod wearing and tearing and valve rod and valve body inside, consequently need urgently to research and develop a valve rod leak protection water formula floating ball valve and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

To the not enough of the technique that arrives, the utility model provides a valve rod leak protection water formula ball valve that floats through the device structure in the ball valve that floats in the design have the thrust gasket of mutually supporting and part structures such as first O type circle, makes this ball valve that floats when rotatory valve rod, effectively prevents that the fluid wherein from leaking out in the space between valve rod and the valve body.

The utility model discloses a following technical scheme realizes:

the utility model provides a ball valve that floats of valve rod leak protection water formula, includes valve body, disk seat, valve rod, spheroid, valve gap, spheroidal sphere float install by the valve body with in the valve pocket that the disk seat is constituteed, the valve rod lower extreme with some assembly hole swing joint are seted up to the spheroid upper end, the through-hole has been seted up on the assembly hole bottom end, the drive mechanism by two sets of hex nut and spanner combination is installed to the valve rod upper end, be provided with the sealing filler between valve rod upper end and the drive mechanism lower extreme, the sealing filler orientation be provided with the clamping ring on one side of hex nut, the valve rod lower extreme is provided with annular bulge, annular bulge with be provided with thrust gasket between the space of the inside upper end valve pocket of valve body, the valve body with be provided with the leak protection gasket between the inboard end space of valve gap mutually supporting equipment of valve gap.

Preferably, in order to reduce the static problem between the valve rod and the ball body, a blind hole is formed in the middle of the bottom end of the valve rod, a static spring is fixedly connected to the inner end face of the blind hole, the other end of the static spring is fixedly connected with the spherical surface of the static ball, and the static ball is movably arranged in the blind hole.

Preferably, in order to avoid the problem that the valve rod is easy to leak due to repeated rotation and abrasion, a valve rod sealing ring groove is formed in the position, close to the lower end of the valve rod, and a first O-shaped ring is arranged and installed in the valve rod sealing ring groove.

Preferably, in order to avoid the valve gap with the valve body through the assembly and the poor problem of leakproofness when using in combination, the valve gap is close to and inserts the valve gap sealing washer groove has been seted up on the edge of the inside one end of valve body, and second O type circle sets up in the valve gap sealing washer groove.

Preferably, in order to ensure the durability of the floating ball valve, the valve body and the valve cover are made of cast steel, stainless steel and copper alloy materials, and the valve rod is made of stainless steel materials.

The utility model has the advantages that:

1. this ball valve device floats's simple structure, practicality and durability are good, are provided with leak protection gasket and second O type circle between through valve body and valve gap, and effective fluid leaks from the fitting gap between valve body and valve gap.

2. Through the through hole that is seted up in the spheroid, usable fluidic pressure upwards jack-up valve rod makes it hug closely the thrust gasket, mutually supports between thrust gasket and the first O type circle, makes this ball valve that floats when rotatory valve rod, prevents effectively that the fluid wherein from leaking out from the space between valve rod and the valve body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts. Elements in the drawings figures are not necessarily to scale, and similar reference numerals are generally used to indicate similar elements.

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

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is a schematic structural view of the valve stem of the present invention;

fig. 4 is a schematic top view of the sphere of the present invention;

fig. 5 is a schematic structural diagram of the middle valve cover of the present invention.

In the figure: 1-valve body, 2-valve seat, 3-thrust gasket, 4-first O-shaped ring, 5-hexagon nut, 6-wrench, 7-positioning piece, 8-pressing ring, 9-sealing filler, 10-valve rod, 100-blind hole, 101-annular protrusion, 102-valve rod sealing ring groove, 11-ball body, 110-assembly hole, 111-through hole, 12-static ball, 13-static spring, 14-second O-shaped ring, 15-anti-leakage gasket, 16-valve cover and 160-valve cover sealing ring groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, a valve rod leakage-proof floating ball valve comprises a valve body 1, a valve seat 2, a ball body 11 and a valve cover 16, wherein a spherical surface of the ball body 11 is installed in a valve cavity formed by the valve body 1 and the valve seat 2 in a floating mode, a mounting hole 110 formed in the lower end of the valve rod 10 and the upper end of the ball body 11 is movably connected, a through hole 111 is formed in the bottom end of the mounting hole 110, a transmission mechanism formed by combining two groups of hexagon nuts 5 and a wrench 6 is installed at the upper end of the valve rod 10, a sealing filler 9 is arranged between the upper end of the valve rod 10 and the lower end of the transmission mechanism, a pressing ring 8 is arranged on one side, facing the hexagon nut 5, of the sealing filler 9, an annular protrusion 101 is arranged at the lower end of the valve rod 10, a thrust gasket 3 is arranged between the annular protrusion 101 and a gap of the valve cavity at the upper end inside the valve body 1, and the valve cover 16 are assembled in a matched mode, and a leakage-proof gasket 15 is arranged between gaps of the inner side ends of the valve body 1 and the valve cover 16.

Specifically, the blind hole 100 is formed in the middle of the bottom end of the valve rod 10, the electrostatic spring 13 is fixedly connected to the inner end face of the blind hole 100, the other end of the electrostatic spring 13 is fixedly connected to the spherical surface of the electrostatic ball 12, the electrostatic ball 12 is movably arranged in the blind hole 100, the valve rod 10 is provided with a valve rod sealing ring groove 102 close to the lower end of the valve rod, the valve rod sealing ring groove 102 is internally provided with a first O-ring 4, the valve cover 16 is provided with a valve cover sealing ring groove 160 close to the edge inserted into one end inside the valve body 1, the second O-ring 14 is arranged in the valve cover sealing ring groove 160, the valve body 1 and the valve cover 16 are made of cast steel, stainless steel and copper alloy materials, and the valve rod 10 is made of stainless steel materials.

When the ball valve is used specifically, a user manually pulls the wrench 6 in the transmission mechanism to enable the valve rod 10 to drive the ball body 11 to rotate in a valve cavity formed by the valve body 1, the valve seat 2 and the valve cover 16, so that the opening and closing of a ball valve passage are controlled. By respectively arranging the leakproof gasket 15 and the second O-ring 14 on the inner side end and the outer side end of the joint of the valve body 1 and the valve cover 16, the leakage caused by the gap between the valve cover 16 and the valve body 1 is effectively prevented. The static electricity prevention apparatus is composed by providing a static ball 12 and a static electricity spring 13 in a blind hole 100 at the lower end of the valve stem 10. Through opening in the spheroid 11 and having the through-hole 111 that link up the setting mutually with blind hole 100, when fluid when the ball valve through-hole 111 through-hole 100 upwards jack-up valve rod 10 for annular protruding portion 101 of valve rod 10 is upwards hugged closely thrust washer 3, through mutually supporting between thrust washer 3 and the first O type circle 4 that lower extreme department was provided with in valve rod 10, makes this float ball valve when rotatory valve rod 10, effectively prevents that the fluid wherein from leaking out from the space between valve rod 10 and the valve body 1.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a ball valve is floated to valve rod leak protection water formula, includes valve body (1), disk seat (2), spheroid (11), valve gap (16), its characterized in that: the sphere of spheroid (11) float install by valve body (1) with the valve cavity that disk seat (2) are constituteed, valve rod (10) lower extreme with pilot hole (110) looks swing joint that has been seted up to spheroid (11) upper end, through-hole (111) have been seted up on pilot hole (110) bottom end, the drive mechanism by two sets of hex nut (5) and spanner (6) combination is installed to valve rod (10) upper end, be provided with between valve rod (10) upper end and the drive mechanism lower extreme packing (9), packing (9) orientation be provided with clamping ring (8) on one side of hex nut (5), valve rod (10) lower extreme is provided with annular bulge (101), annular bulge (101) with be provided with thrust gasket (3) between the space of the inside upper end valve pocket of valve body (1), valve body (1) with be provided with leak protection gasket (15) between the inboard end space of valve gap (16) equipment of mutually supporting ).

2. The valve stem leak-proof floating ball valve as recited in claim 1, wherein: the middle of the bottom end of the valve rod (10) is provided with a blind hole (100), an inner end face in the blind hole (100) is fixedly connected with an electrostatic spring (13), the other end of the electrostatic spring (13) is fixedly connected with the spherical surface of an electrostatic ball (12), and the electrostatic ball (12) is movably arranged in the blind hole (100).

3. The valve stem leak-proof floating ball valve as recited in claim 1, wherein: a valve rod sealing ring groove (102) is formed in the position, close to the lower end of the valve rod (10), of the valve rod, and a first O-shaped ring (4) is arranged in the valve rod sealing ring groove (102).

4. The valve stem leak-proof floating ball valve as recited in claim 1, wherein: the edge of one end, close to the end inserted into the valve body (1), of the valve cover (16) is provided with a valve cover sealing ring groove (160), and the second O-shaped ring (14) is arranged in the valve cover sealing ring groove (160).

5. The valve stem leak-proof floating ball valve as recited in claim 1, wherein: the valve body (1) and the valve cover (16) are made of cast steel, stainless steel and copper alloy materials, and the valve rod (10) is made of stainless steel materials.