CN219542644U

CN219542644U - Three-way valve grinding mould

Info

Publication number: CN219542644U
Application number: CN202320656794.1U
Authority: CN
Inventors: 李广冬; 曾万行; 徐英健; 葛世龙
Original assignee: Huadian Luohe Power Generation Co ltd
Current assignee: Huadian Luohe Power Generation Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-08-18
Anticipated expiration: 2033-03-29

Abstract

The utility model belongs to the technical field of three-way valve machining, and particularly relates to a three-way valve grinding mould. The valve core grinding device comprises a stress part, a guide rod and a grinding part, wherein the stress part is connected with the grinding part through the guide rod, a positioning piece is arranged on the guide rod, the grinding part is arranged between the valve core and an upper valve seat, and the grinding part can be conveniently placed into the upper valve seat when grinding is required through the design of the elliptic cylindrical grinding part, so that the upper valve seat is prevented from being removed, and the grinding of the valve core is realized under the condition that the valve core is not taken out; and the distance between the locating piece and the grinding part can be adjusted by moving the locating piece along the threaded connection part on the guide rod, so that the grinding of the upper valve seat can be realized. The utility model has simple structure and easy operation, and saves maintenance cost while improving maintenance efficiency.

Description

Three-way valve grinding mould

Technical Field

The utility model belongs to the technical field of three-way valve machining, and particularly relates to a three-way valve grinding mould.

Background

At present, when the water level of the high-pressure heater rises rapidly due to the breakage of the heat exchange tube, the water supply through the inside of the high-pressure heater is cut off, so that the high-pressure heater shell is prevented from being exploded in an overpressure way, and the water supply cannot enter a steam turbine and a boiler through a steam extraction pipeline, and cannot be broken. The tightness of the high-pressure water supply three-way valve is very important, and if the three-way valve is not tight, water supply flow deviation can be caused, so that the safety of the hairline pressing unit is affected. It is necessary to grind the valve element or the like to secure its sealability.

As shown in fig. 1, the high-pressure water-supply three-way valve 6 comprises a valve rod 62, an upper valve seat 63, a valve core 64, a lower valve seat 65 and other parts, the design pressure of the high-pressure water-supply three-way valve reaches 32 mpa, and the three-way valve is connected in a welding mode due to the high-pressure environment inside the high-pressure water-supply three-way valve, and the valve seats of the three-way valve are welded. When the upper sealing surface of the valve core is ground in the traditional mode, the upper valve seat needs to be cut off, and on one hand, the difficulty of cutting off the upper valve seat is high due to the narrow valve port space; on the other hand, the repair of the upper valve seat is also costly and costly after the repair is completed.

In chinese patent publication No. CN212351684U, a three-way valve inner hole grinding tool is disclosed, but the grinding part cannot grind the valve core without dismantling the upper valve seat, so that the grinding tool is only suitable for a low-pressure three-way valve, and is not suitable for a three-way valve with a welded and fixed upper valve seat.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model aims to provide a three-way valve grinding mould.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a three-way valve grinds mould, includes atress portion, guide bar and grinding portion, atress portion pass through the guide bar with grinding portion links to each other, be provided with the setting element on the guide bar, grinding portion sets up between case and last disk seat, grinding portion can take out in the three-way valve after going up the disk seat.

Optionally, the grinding part is in an elliptic cylinder shape, and the minor axis length of the ellipse at the bottom surface of the grinding part is smaller than the inner diameter of the upper valve seat.

Optionally, the guide rod is detachably connected with the grinding part.

Optionally, an external thread is arranged on the side wall of the bottom end of the guide rod, a threaded hole is formed in the center of the grinding part, and the guide rod is in threaded connection with the threaded hole.

Optionally, a threaded connection part is arranged on the guide rod, and the positioning piece is movably connected with the threaded connection part.

Optionally, the positioning member is a positioning disc.

Optionally, the force-bearing part is a rocker with an insulating handle.

Compared with the prior art, the utility model has the beneficial effects that:

according to the valve core grinding device, through the design of the elliptic cylindrical grinding part, the grinding part can be conveniently placed into the upper valve seat when grinding is needed, so that the upper valve seat is prevented from being removed, and the valve core is ground under the condition that the valve core is not taken out; and the distance between the locating piece and the grinding part can be adjusted by moving the locating piece along the threaded connection part on the guide rod, so that the valve core can be ground, and the upper valve seat can be ground. The utility model has simple structure and easy operation, and saves maintenance cost while improving maintenance efficiency.

Drawings

FIG. 1 is a schematic view of a high pressure feed water three-way valve;

FIG. 2 is a schematic view of a three-way valve grinding mold according to the present utility model;

in the figure: 1. a force receiving part; 11. an insulating handle; 2. a guide rod; 21. a threaded connection; 3. a polishing section; 4. a positioning piece; 5. a threaded hole; 6. a high pressure water supply three-way valve; 62. a valve stem; 63. an upper valve seat; 64. a valve core; 65. A lower valve seat.

Detailed Description

The utility model is further described below in connection with specific embodiments.

The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any creative effort based on the embodiments in the present utility model are all within the protection scope of the present utility model.

As shown in fig. 2, the three-way valve grinding mould comprises a stress part 1, a guide rod 2 and a grinding part 3, wherein the stress part 1 is a rocker with an insulating handle 11, the stress part 1 is connected with the grinding part 3 through the guide rod 2, a positioning piece 4 is arranged on the guide rod 2, the positioning piece 4 is a positioning disc, the positioning piece 4 is clamped at a valve cover position, the grinding part 3 is arranged between a valve core and an upper valve seat, and the grinding part 3 can be taken out from the three-way valve after passing through the upper valve seat. When the three-way valve needs to be ground, the valve rod is taken down, the grinding part 3 is placed in the three-way valve, the grinding part is placed between the upper valve seat and the three-way valve, the guide rod 2 is installed, the lower surface of the grinding part 3 is abutted with the upper surface of the valve core, and after the positioning piece 4 is moved to the valve cover position, the stressed part 1 is rotated to grind the upper surface of the valve core.

The guide rod 2 is detachably connected with the grinding part 3, external threads are arranged on the side wall of the bottom end of the guide rod 2, a threaded hole 5 is formed in the center of the grinding part 3, the guide rod 2 is in threaded connection with the threaded hole 5, and the grinding part 3 can be conveniently installed and detached. And be equipped with threaded connection portion 21 on guide bar 2, setting element 4 and connecting portion swing joint can adjust the distance between setting element 4 and the grinding portion 3 through setting element 4 along threaded connection portion 21 rotation, and when adjusting setting element 4 to grinding portion 3 up end and last disk seat contact, rotation atress portion 1 can grind last disk seat.

The grinding part 3 is elliptical, the upper bottom surface and the lower bottom surface of the grinding part are elliptical, the short axis length of the bottom surface is smaller than the inner diameter of the upper valve seat, and the long axis length of the bottom surface is equal to the outer diameter of the upper valve seat, so that the grinding part 3 can be conveniently placed in the upper valve seat when the three-way valve needs to be ground, and the grinding can be realized by contacting the side wall of the grinding part 3 in the long axis direction with the upper valve seat when the upper valve seat needs to be ground.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Modifications which do not constitute an inventive task will fall within the scope of protection of the present utility model, without departing from the spirit and principles of the present utility model, to any person of ordinary skill in the art.

Claims

1. The utility model provides a three-way valve grinds mould, its characterized in that includes atress portion (1), guide bar (2) and grinding portion (3), atress portion (1) pass through guide bar (2) with grinding portion (3) link to each other, be provided with setting element (4) on guide bar (2), grinding portion (3) set up between case and last disk seat, grinding portion (3) can take out in the three-way valve after last disk seat.

2. The three-way valve grinding mold according to claim 1, wherein the grinding part (3) is in an elliptic cylindrical shape, and the minor axis length of the bottom ellipse of the grinding part (3) is smaller than the inner diameter of the upper valve seat.

3. A three-way valve grinding mould according to claim 1, characterized in that the guiding rod (2) is detachably connected to the grinding section (3).

4. A three-way valve grinding mould according to claim 3, wherein an external thread is arranged on the side wall of the bottom end of the guide rod (2), a threaded hole (5) is formed in the center of the grinding part (3), and the guide rod (2) is in threaded connection with the threaded hole (5).

5. The three-way valve grinding mould according to claim 1, wherein the guide rod (2) is provided with a threaded connection portion (21), and the positioning piece (4) is movably connected with the threaded connection portion (21).

6. A three-way valve grinding mould according to claim 1, characterized in that the positioning element (4) is a positioning disc.

7. The three-way valve grinding mould according to claim 1, wherein the force receiving part (1) is a rocker with an insulating handle (11).