CN111706701A

CN111706701A - Ceramic sealing vertical check valve

Info

Publication number: CN111706701A
Application number: CN202010776995.6A
Authority: CN
Inventors: 衡步俊
Original assignee: Jiangsu Yutong Speical Pipe Industry Co ltd
Current assignee: Jiangsu Yutong Speical Pipe Industry Co ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2020-09-25

Abstract

The invention discloses a ceramic sealing vertical check valve, which relates to the technical field of check valves and comprises a valve body, wherein the upper surface of the valve body is fixedly connected with an upper valve cover, the middle part of the upper valve cover is provided with a water outlet, the lower surface of the valve body is fixedly connected with a lower valve cover, the middle part of the lower valve cover is provided with a water inlet, the inner wall of the lower end of the valve body is fixedly connected with a valve seat, the valve seat is in a convex shape, the protruding part of the valve seat is upward, and a valve seat ceramic sealing ring is embedded. According to the invention, the valve clack ceramic sealing ring is embedded in the lower surface of the valve clack and the boss is fixedly connected with the lower surface of the valve clack, the valve seat ceramic sealing ring is embedded in the upper surface of the valve seat, and the groove is formed in the upper surface of the valve seat, so that the boss is matched with the groove, the wear resistance and the sealing performance of the valve clack and the valve seat are improved, and the service life of the check valve is prolonged because the ceramic has high strength and corrosion resistance.

Description

Ceramic sealing vertical check valve

Technical Field

The invention relates to the technical field of check valves, in particular to a ceramic sealing vertical check valve.

Background

The working principle of the vertical check valve is as follows: under the pressure of the medium at the inlet end of the pipeline, the resistance of the spring is overcome, and the valve is opened or closed. When the pressure of the medium at the inlet end is lower than that at the outlet end, the spring pushes the valve core to the valve seat to close the valve, so that the medium is prevented from flowing backwards, and the check function is realized. The vertical check valve is widely used in the industries of electric power, petrifaction, metallurgy and the like. At present, vertical check valve on the market is under the operating mode environment of some wearing and tearing and corruption, and the valve clack passes through long-time wearing and tearing and corruption with the sealed face of disk seat, and sealing performance reduces, appears revealing easily the condition, and the serious meeting wearing valve body of condition seriously influences the normal operating of system.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a ceramic sealing vertical check valve, which solves the problem that the sealing surface of the valve clack and the valve seat of the prior ceramic sealing vertical check valve in the background art has low wear resistance and corrosion resistance.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a ceramic sealing vertical check valve comprises a valve body, wherein an upper valve cover is fixedly connected to the upper surface of the valve body, a water outlet is formed in the middle of the upper valve cover, a lower valve cover is fixedly connected to the lower surface of the valve body, a water inlet is formed in the middle of the lower valve cover, a valve seat is fixedly connected to the inner wall of the lower end of the valve body, the valve seat is in a convex shape, the protruding portion of the valve seat faces upwards, a valve seat ceramic sealing ring is inlaid on the upper surface of the valve seat, a groove is formed in the upper surface of the valve seat ceramic sealing ring, a fixing disc is arranged above the valve seat, a plurality of fixing columns are fixedly connected to the outer surface of the fixing disc, one ends, away from the fixing disc, of the fixing columns are fixedly connected with the inner wall of the upper end of the, the last fixed surface of valve rod is connected with the stopper, the lower fixed surface of valve rod is connected with the valve clack, the lower surface of valve clack is inlayed valve clack ceramic seal, valve clack ceramic seal's lower fixed surface is connected with the boss, boss and recess looks adaptation, the spring has been cup jointed to the surface of valve rod, the upper surface of spring and the lower fixed surface of fixed disk are connected, the lower surface of spring and the last fixed surface of valve clack are connected.

Furthermore, the upper valve cover is convex, a plurality of first threaded holes are formed in the upper valve cover, and the first threaded holes are distributed in an annular array mode relative to the water outlet.

Furthermore, a plurality of second screw holes are seted up to the lower surface of lower valve gap, and is a plurality of the second screw hole is annular array distribution about the water inlet.

Further, the valve seat is located above the lower valve cover and is in a boss shape, a through hole is formed in the valve seat, and the through hole is communicated with the water inlet.

Furthermore, a plurality of the fixed columns are distributed in an annular array, the fixed columns are in contact with the inner wall of the circular arc of the valve body, and a rubber layer is arranged at the position where the limiting block is in contact with the fixed disk.

Further, the valve clack is circular boss form, the cross section of valve clack personally submits the shape of falling trapezoidal, valve clack ceramic seal and disk seat ceramic seal closely laminate.

Further, recess and boss all are the annular form, and the boss material is pottery, the spring is reset spring, and the spring is stainless steel wire spring, the size of stopper is greater than the size in valve rod hole.

(III) advantageous effects

The invention provides a ceramic sealing vertical check valve which has the following beneficial effects:

(1) this ceramic seal vertical check valve, through inlaying valve clack ceramic seal circle and at its lower surface fixed connection boss at the lower surface of valve clack, through inlaying disk seat ceramic seal circle and seting up the recess at its upper surface at the upper surface of disk seat for boss and recess looks adaptation have improved the wear resistance and the sealing performance of valve clack and disk seat, because pottery has intensity height, and corrosion resistance has improved check valve's life like this.

(2) This ceramic seal vertical check valve sets up the stopper through the upper surface at the valve rod, and when delivery port pressure was greater than the pressure of water inlet, the valve clack moved to the disk seat under the water pressure difference, and when stopper and fixed disk were inconsistent, the sealed face of valve clack just closely laminated with the sealed face of disk seat, at the position fixed connection rubber layer of stopper and fixed disk contact, the impact of effectual reduction stopper and fixed disk.

Drawings

FIG. 1 is a schematic perspective view of a ceramic sealing vertical check valve according to the present invention;

FIG. 2 is a schematic front view of the vertical check valve with ceramic seal according to the present invention;

FIG. 3 is a schematic cross-sectional view A-A of the ceramic sealing vertical check valve of the present invention shown in FIG. 2;

FIG. 4 is an enlarged view of a portion B of FIG. 3 of the ceramic sealing vertical check valve of the present invention;

FIG. 5 is a schematic view showing the structure of a stationary disk of the ceramic sealing vertical check valve according to the present invention.

In the figure: 1. a valve body; 2. a water outlet; 3. an upper valve cover; 4. a first threaded hole; 5. a lower valve cover; 6. A second threaded hole; 7. a water inlet; 8. a valve seat; 9. a valve seat ceramic seal ring; 10. fixing the disc; 11. Fixing a column; 12. a valve stem; 13. a limiting block; 14. a guide sleeve; 15. a valve flap; 16. a valve clack ceramic seal ring; 17. a spring; 18. a valve stem bore.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected or detachably connected; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1-5, the present invention provides a technical solution:

a ceramic sealing vertical check valve comprises a valve body 1, wherein an upper valve cover 3 is fixedly connected to the upper surface of the valve body 1, the upper valve cover 3 is in a convex shape, a plurality of first threaded holes 4 are formed in the upper valve cover 3, the first threaded holes 4 are distributed in an annular array manner relative to a water outlet 2, the water outlet 2 is formed in the middle of the upper valve cover 3, a lower valve cover 5 is fixedly connected to the lower surface of the valve body 1, a plurality of second threaded holes 6 are formed in the lower surface of the lower valve cover 5, the second threaded holes 6 are distributed in an annular array manner relative to a water inlet 7, a water inlet 7 is formed in the middle of the lower valve cover 5, a valve seat 8 is fixedly connected to the inner wall of the lower end of the valve body 1, the valve seat 8 is positioned above the lower valve cover 5, the valve seat 8 is in a convex shape, through holes are formed in the valve seat 8 and communicated with the water, the upper surface of the valve seat ceramic seal ring 9 is provided with a groove, a fixed disk 10 is arranged above the valve seat 8, the outer surface of the fixed disk 10 is fixedly connected with a plurality of fixed columns 11, the fixed columns 11 are distributed in an annular array, the fixed columns 11 are contacted with the circular arc inner wall of the valve body 1, one end of each fixed column 11, far away from the fixed disk 10, is fixedly connected with the inner wall of the upper end of the valve body 1, the middle part of the fixed disk 10 is provided with a valve rod hole 18, the inner wall of the valve rod hole 18 is fixedly connected with a guide sleeve 14, the inside of the guide sleeve 14 is slidably connected with a valve rod 12, the upper surface of the valve rod 12 is fixedly connected with a limiting block 13, a rubber layer is arranged at the position where the limiting block 13 is contacted with the fixed disk 10, the size of the limiting block 13 is larger than that of the valve rod hole, when the limiting block 13 is abutted against the fixed disk 10, the valve clack ceramic sealing ring 16 is just tightly attached to the valve seat ceramic sealing ring 9, a rubber layer is fixedly connected to the position where the limiting block 13 is contacted with the fixed disk 10, so that the impact between the limiting block 13 and the fixed disk 10 is effectively reduced, the lower surface of the valve rod 12 is fixedly connected with the valve clack 15, the valve clack 15 is in a circular boss shape, the cross section of the valve clack 15 is in an inverted trapezoid shape, the valve clack ceramic sealing ring 16 is inlaid on the lower surface of the valve clack 15, the valve clack ceramic sealing ring 16 is tightly attached to the valve seat ceramic sealing ring 9, the lower surface of the valve clack ceramic sealing ring 16 is fixedly connected with a boss, the boss is matched with the groove, the groove and the boss are both in an annular shape, the boss is made of ceramic, the outer surface of the, spring 17's lower surface and valve clack 15's upper surface fixed connection, through inlaying valve clack ceramic seal 16 and at its lower surface fixed connection boss at valve clack 15's lower surface, through inlaying disk seat ceramic seal 9 and set up the recess at its upper surface at disk seat 8's upper surface for boss and recess looks adaptation have improved valve clack 15 and disk seat 8's wear resistance and sealing performance, because pottery has intensity height, corrosion resistance, has improved check valve's life like this.

According to the working principle, when the water inlet valve is opened, water firstly passes through the valve seat 8, because the water pressure in the valve seat 8 is greater than the water pressure outside the valve seat 8, the valve clack 15 overcomes the resistance of the spring 17 to move upwards under the water pressure difference, so that the valve clack 15 drives the valve rod 12 to slide upwards in the guide sleeve 14, at the moment, the water flows upwards from the inside of the valve seat 8, and the water flows to the water outlet 2 by bypassing the opened valve clack 15 through gaps among the plurality of fixed columns 11. When closing the inlet valve, water can flow back downwards, when water inlet 7 water pressure is less than delivery port 2, spring 17 pushes valve clack 15 to disk seat 8, when the rubber layer of stopper 13 lower surface contacts with fixed disk 10, the boss enters into the recess this moment, valve clack ceramic seal ring 16 closely laminates with disk seat ceramic seal ring 9, prevent the medium adverse current, play the non return effect, because the upper surface of valve clack 15 is greater than the lower surface, when water passes through the upper surface of valve clack 15, water can upwards flow back earlier and then downward dispersion flows, guarantee like this that water can not flow to in the disk seat 8.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The ceramic sealing vertical check valve comprises a valve body (1) and is characterized in that an upper valve cover (3) is fixedly connected to the upper surface of the valve body (1), a water outlet (2) is formed in the middle of the upper valve cover (3), a lower valve cover (5) is fixedly connected to the lower surface of the valve body (1), a water inlet (7) is formed in the middle of the lower valve cover (5), a valve seat (8) is fixedly connected to the inner wall of the lower end of the valve body (1), the valve seat (8) is in a convex shape, the convex part of the valve seat is upward, a valve seat ceramic sealing ring (9) is embedded in the upper surface of the valve seat (8), a groove is formed in the upper surface of the valve seat ceramic sealing ring (9), a fixed disk (10) is arranged above the valve seat (8), a plurality of fixed columns (11) are fixedly connected to the outer surface of the fixed disk (10), and one ends, far away from, valve rod hole (18) have been seted up at the middle part of fixed disk (10), inner wall fixedly connected with uide bushing (14) in valve rod hole (18), the inside sliding connection of uide bushing (14) has valve rod (12), the last fixed surface of valve rod (12) is connected with stopper (13), the lower fixed surface of valve rod (12) is connected with valve clack (15), valve clack ceramic seal (16) have been inlayed to the lower surface of valve clack (15), the lower fixed surface of valve clack ceramic seal (16) is connected with the boss, boss and recess looks adaptation, spring (17) have been cup jointed to the surface of valve rod (12), the upper surface of spring (17) and the lower fixed surface of fixed disk (10) are connected, the lower surface of spring (17) and the upper surface fixed connection of valve clack (15).

2. The ceramic sealing vertical check valve of claim 1,

the upper valve cover (3) is convex, a plurality of first threaded holes (4) are formed in the upper valve cover (3), and the first threaded holes (4) are distributed in an annular array mode about the water outlet (2).

3. The ceramic sealing vertical check valve of claim 1,

a plurality of second screw holes (6) are seted up to the lower surface of lower valve gap (5), and is a plurality of second screw hole (6) are annular array distribution about water inlet (7).

4. The ceramic sealing vertical check valve of claim 1,

the valve seat (8) is located above the lower valve cover (5), the valve seat (8) is in a boss shape, a through hole is formed in the valve seat (8), and the through hole is communicated with the water inlet (7).

5. The ceramic sealing vertical check valve of claim 1,

the fixing columns (11) are distributed in an annular array, the fixing columns (11) are in contact with the inner wall of the circular arc of the valve body (1), and a rubber layer is arranged at the position where the limiting block (13) is in contact with the fixed disk (10).

6. The ceramic sealing vertical check valve of claim 1,

valve clack (15) are circular boss form, the cross section of valve clack (15) is personally submitted the trapezoidal form, valve clack ceramic seal circle (16) and disk seat ceramic seal circle (9) closely laminate.

7. The ceramic sealing vertical check valve of claim 1,

the groove and the boss are both annular, the boss is made of ceramic, the spring (17) is a reset spring, the spring (17) is a stainless steel wire spring, and the size of the limiting block (13) is larger than that of the valve rod hole (18).