CN213954417U

CN213954417U - Valve rod limiting ball valve

Info

Publication number: CN213954417U
Application number: CN202022349886.4U
Authority: CN
Inventors: 俞婧; 沈龙军; 陈健豪
Original assignee: Zhejiang Yongsheng Technology Co ltd
Current assignee: Zhejiang Yongsheng Technology Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-08-13
Anticipated expiration: 2030-10-21

Abstract

The utility model discloses a valve rod limiting ball valve, relating to the technical field of valves; the ball valve comprises a valve body, a ball body connected in the valve body in a rotating mode, a valve rod connected with one end of the ball body, a sealing groove is formed in one side of the valve body, a sealing ring is arranged in the sealing groove, an extrusion block used for extruding the sealing ring is arranged in the sealing groove, the valve rod penetrates through the sealing ring and the extrusion block, a pressing plate used for pressing the extrusion block downwards is sleeved on the valve rod, the pressing plate is fixedly connected with the valve body, a limiting plate is connected to the pressing plate in a rotating mode, a limiting groove used for limiting the rotating angle of the limiting plate is formed in the pressing plate, the rotating angle range of the limiting plate is 0-90 degrees, and the limiting plate is located in the limiting groove. The utility model provides a spacing ball valve of valve rod, through the spacing principle of valve rod, can fine assurance valve rod rotate and target in place, guarantee that the valve is in full-open or the state of closing entirely.

Description

Valve rod limiting ball valve

Technical Field

The utility model belongs to the technical field of the valve, in particular to spacing ball valve of valve rod.

Background

The floating ball valve has the characteristics of small flow resistance, good sealing performance, simple structure, small size and the like, is widely applied to various chemical industries, can realize the function of quick opening and closing after being matched with a pneumatic actuating mechanism, and can be applied to the working conditions of high temperature, high pressure, strong scouring and suspended particles in a medium belt for a hard-seal floating ball valve. However, the valves are severely washed under these working conditions, if the valves cannot be fully opened or fully closed during working, the high-speed medium can quickly damage the valve seats and the ball bodies to cause internal leakage, and if precautionary measures cannot be taken in time, the high-speed medium can also break through the valve bodies to cause medium leakage to cause safety accidents.

At present, the limit of a valve is generally limited by an actuating mechanism, after the valve is installed on a pipeline, the time is long, bolts for fastening the actuating mechanism can be loosened, gaps among the bolts, the valve and the actuating mechanism can rotate relatively, and the valve is located at a non-full-opening position. Therefore, the valve is often not fully opened or fully closed when being opened or closed.

Disclosure of Invention

The utility model aims at overcoming the above-mentioned shortcoming of prior art, provide a spacing ball valve of valve rod, through keeping away from of valve rod spacing, can fine assurance valve rod rotate and target in place, guarantee that the valve is in full-open or the complete closure state.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a spacing ball valve of valve rod, includes the valve body, rotates the valve rod of connecting spheroid, one end and spheroid connection in the valve body, valve body one side is equipped with the seal groove, be equipped with the sealing washer in the seal groove, be equipped with the extrusion piece that is used for extrudeing the sealing washer in the seal groove, the valve rod passes sealing washer and extrusion piece, the cover is equipped with the clamp plate that is used for pushing down the extrusion piece on the valve rod, clamp plate and valve body rigid coupling, it is connected with the limiting plate to rotate on the clamp plate, be equipped with the spacing groove that is used for restricting the turned angle of limiting plate on the clamp plate, the turned angle scope of limiting plate is 0-90 degrees, the limiting plate is located the spacing inslot.

Preferably, the two ends of the pressure plate are fixedly connected with the valve body through bolts.

Preferably, the two ends of the pressing plate are provided with limiting bulges, and the limiting bulges and the pressing plate are enclosed into the limiting groove.

Preferably, the limiting groove is located on one side, away from the valve body, of the pressing plate, a limiting ring used for enabling the limiting plate to be located in the limiting groove is arranged on one side, away from the valve body, of the pressing plate, and the limiting ring is connected with the valve rod.

Preferably, an arrow is provided at one end of the restriction plate. The arrow acts as a flag to let a person know whether it is in the off or on state at that time.

Preferably, the height of the limiting projection is greater than the thickness of the limiting plate.

Preferably, two positioning grooves are formed in the bottom of the limiting groove, an accommodating groove is formed in one side, away from the valve body, of the limiting plate, a sliding groove is formed in the bottom of the accommodating groove, a sliding rod is connected in the sliding groove in a sliding mode, one end, close to the pressing plate, of the sliding rod is rotatably connected with a ball used for being embedded into the positioning grooves, a spring used for applying force to the sliding rod, and towards one side of the pressing plate is arranged in the accommodating groove, a cover plate covers a notch of the accommodating groove, and the sliding rod penetrates through the cover plate; the ball is located one of the positioning grooves, and when the limiting plate rotates 90 degrees, the ball is located in the other positioning groove.

The utility model has the advantages that: the utility model provides a spacing ball valve of valve rod, through the spacing principle of valve rod, can fine assurance valve rod rotate and target in place, guarantee that the valve is in full-open or the state of closing entirely.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a cross-sectional view B-B of fig. 1 of the present invention;

FIG. 3 is a schematic view of a platen;

FIG. 4 is a top view of the platen;

FIG. 5 is a top view of a limiting plate;

fig. 6 is a sectional view a-a of fig. 5.

In the figure: the valve comprises a valve body 1, a ball body 2, a valve rod 3, a sealing groove 4, a sealing ring 5, an extrusion block 6, a pressure plate 7, a limiting plate 8, a limiting groove 9, a limiting protrusion 10, a limiting ring 11, an arrow 12, a positioning groove 13, a sliding groove 14, a sliding rod 15, a ball 16, an accommodating groove 17, a spring 18 and a cover plate 19.

Detailed Description

The invention will be further explained in detail with reference to the drawings and the following detailed description:

example (b):

referring to fig. 1 to 6, a valve rod limiting ball valve comprises a valve body 1, a ball body 2 rotatably connected in the valve body 1, a valve rod 3 with one end connected with the ball body 2, a sealing groove 4 is arranged on one side of the valve body 1, a sealing ring 5 is arranged in the sealing groove 4, an extrusion block 6 used for extruding the sealing ring 5 is arranged in the sealing groove 4, the valve rod 3 penetrates through the sealing ring 5 and the extrusion block 6, a pressing plate 7 used for pressing the extrusion block 6 downwards is sleeved on the valve rod 3, the pressing plate 7 is fixedly connected with the valve body 1, a limiting plate 8 is rotatably connected to the pressing plate 7, a limiting groove 9 used for limiting the rotation angle of the limiting plate 8 is arranged on the extrusion block 6, the rotation angle range of the limiting plate 8 is 0-90 degrees, and the limiting plate 8 is located in the limiting groove 9.

Two ends of the pressure plate 7 are fixedly connected with the valve body 1 through bolts. The two ends of the pressing plate 7 are provided with limiting bulges 10, and the limiting grooves 9 are enclosed by the limiting bulges 10 and the pressing plate 7. The height of the limiting protrusion 10 is larger than the thickness of the limiting plate 8. Spacing groove 9 is located the one side that valve body 1 was kept away from to clamp plate 7, one side that valve body 1 was kept away from to clamp plate 7 is equipped with the spacing ring 11 that is used for making limiting plate 8 be located spacing groove 9, spacing ring 11 and valve rod 3 are connected. One end of the pressure plate 7 is provided with an arrow 12.

The valve comprises a limiting groove 9, a valve body 1, a limiting plate 8, a sliding groove 14, a sliding rod 15, a ball 16, a spring 18 and a cover plate 19, wherein the two positioning grooves 13 are formed in the groove bottom of the limiting groove 9, an accommodating groove 17 is formed in one side, away from the valve body 1, of the limiting plate 8, the sliding groove 14 is formed in the groove bottom of the accommodating groove 17, the sliding rod 15 is connected in the sliding groove 14 in a sliding mode, one end, close to a pressing plate 7, of the sliding rod 15 is connected with the ball 16 in a rotating mode and used for being embedded into the positioning grooves 13, the spring 18 used for applying force to the sliding rod 15, towards one side of the pressing plate 7 is arranged in the accommodating groove 17, the cover plate 19 covers the notch of the accommodating groove 17, and the sliding rod 15 penetrates through the cover plate 19;

the ball 16 is located in one of the positioning grooves 13, and when the limiting plate rotates 90 degrees, the ball 16 is located in the other positioning groove 13.

Principle of embodiment:

the pressing plate presses the extrusion block downwards, and the outer diameter of the sealing ring is increased under the action of the extrusion block, so that the sealing effect of the valve body is ensured.

When carrying out the switch to the valve, do not close to adopt actuating mechanism to rotate the valve rod or adopt manual mode, when the limiting plate supports and leans on one of them spacing arch 10, the valve just is in when opening or closing entirely, valve rod turned angle's accuracy has been guaranteed, reduce to erode the damage to the valve, when the limiting plate supports and leans on spacing arch 10, ball 16 imbeds in the constant head tank 13 that corresponds, at this moment, the tip of slide bar 15 flushes with the surface of apron 19, can judge from the vision whether the valve rod rotated this moment and put in place, on the other hand, under the effect of spring, also can prevent that the valve rod can not rotate easily.

Claims

1. The utility model provides a spacing ball valve of valve rod, includes the valve body, rotates the valve rod of connecting spheroid, one end and spheroid connection in the valve body, its characterized in that, valve body one side is equipped with the seal groove, be equipped with the sealing washer in the seal groove, be equipped with the extrusion piece that is used for extrudeing the sealing washer in the seal groove, the valve rod passes sealing washer and extrusion piece, the cover is equipped with the clamp plate that is used for pushing down the extrusion piece on the valve rod, clamp plate and valve body rigid coupling, it is connected with the limiting plate to rotate on the clamp plate, be equipped with the spacing groove that is used for restricting the turned angle of limiting plate on the clamp plate, the turned angle scope of limiting plate is 0-90 degrees, the limiting plate is located the spacing inslot.

2. The valve stem limit ball valve of claim 1, wherein two ends of the pressure plate are fixedly connected with the valve body through bolts.

3. The valve stem limit ball valve of claim 1, wherein the pressure plate has limit protrusions at both ends thereof, and the limit protrusions and the pressure plate define the limit grooves.

4. The valve stem limit ball valve according to claim 1, wherein the limit groove is located on a side of the pressure plate away from the valve body, a limit ring for locating the limit plate in the limit groove is arranged on a side of the pressure plate away from the valve body, and the limit ring is connected with the valve stem.

5. The valve stem limit ball valve of claim 1, wherein an arrow is provided at one end of the limit plate.

6. The valve stem limit ball valve of claim 3, wherein the height of the limit projection is greater than the thickness of the limit plate.

7. The valve rod limit ball valve according to claim 4, wherein the bottom of the limit groove is provided with two positioning grooves, one side of the limit plate away from the valve body is provided with a containing groove, the bottom of the containing groove is provided with a sliding groove, a sliding rod is slidably connected in the sliding groove, one end of the sliding rod close to the pressure plate is rotatably connected with a ball used for being embedded into the positioning grooves, a spring used for applying force to the sliding rod towards one side of the pressure plate is arranged in the containing groove, a cover plate covers the notch of the containing groove, and the sliding rod penetrates through the cover plate;

the ball is located one of the positioning grooves, and when the limiting plate rotates 90 degrees, the ball is located in the other positioning groove.