CN214063817U - Valve for preventing electrochemical corrosion - Google Patents

Abstract

The utility model provides a valve for preventing electrochemical corrosion, which comprises a valve main body, a valve plate and a valve shaft, wherein a first through hole is arranged on the valve main body, a second through hole is arranged on the valve plate, one end of the valve shaft penetrates out of the first through hole of the valve main body, the other end is arranged in the second through hole of the valve plate, the valve shaft and the valve plate are fixedly connected through a taper pin, a first sealing ring is respectively sleeved at two ends of the taper pin, and the taper pin sequentially passes through the valve plate and the valve shaft; a Yx sealing ring and a shaft sleeve are arranged between the valve shaft and the valve main body; a second sealing ring is arranged between the valve shaft and the valve plate. A prevent electrochemical corrosion's valve, can prevent that the medium from getting into valve shaft and valve plate contact segment, valve shaft and taper pin contact segment, the clearance of valve shaft and valve main part contact segment forms little battery, produces electrochemical corrosion.

Description

Valve for preventing electrochemical corrosion

Technical Field

The utility model belongs to the valve field especially relates to a prevent electrochemical corrosion's valve.

Background

The valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, has the functions of diversion, stopping, throttling, non-return, shunt or overflow pressure relief and the like, is used for controlling the fluid from the simplest stop valve to various valves used in a very complicated automatic control system, has quite various varieties and specifications, is one of the main causes of valve damage due to corrosion, and is mainly subjected to electrochemical corrosion on metal valves. In order to ensure the performance and service life of the valve during the use process of the valve, corrosion protection must be adopted, wherein the main consideration is to eliminate electrochemical corrosion.

Disclosure of Invention

In view of the above, the present invention is directed to a valve for preventing electrochemical corrosion, so as to overcome the drawbacks of the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this: a valve for preventing electrochemical corrosion comprises a valve main body, a valve plate and a valve shaft, wherein a first through hole is formed in the valve main body, a second through hole is formed in the valve plate, one end of the valve shaft penetrates through the first through hole of the valve main body, the other end of the valve shaft is arranged in the second through hole of the valve plate, the valve shaft and the valve plate are fixedly connected through a conical pin, a first sealing ring is sleeved at each of two ends of the conical pin, and the conical pin sequentially penetrates through the valve plate and the valve shaft;

a Yx sealing ring and a shaft sleeve are arranged between the valve shaft and the valve main body, the Yx sealing ring is positioned at one end close to the valve plate, and the shaft sleeve is positioned at one end far away from the valve plate;

be equipped with No. two sealing rings between valve shaft and the valve plate, No. two sealing rings are located the both ends of No. two through-holes.

Furthermore, one end of the taper pin is a thick end, the other end of the taper pin is a thin end, and the thin end of the taper pin is in threaded connection with a nut.

Furthermore, the outer walls of the thick head end and the thin head end of the taper pin are respectively provided with a circle of groove, a first sealing ring is positioned in the groove, and the first sealing ring is an O-shaped sealing ring.

Furthermore, a gasket is arranged between the valve plate and the nut.

Further, the Yx sealing ring is of a dry structure.

Furthermore, the first sealing ring and the second sealing ring are made of rubber.

Furthermore, the valve plate is made of nodular cast iron.

Further, the valve shaft and the taper pin are made of stainless steel materials.

Further, the number of the taper pins is two.

Furthermore, a layer of anti-corrosion coating is arranged on the inner surface and the outer surface of the valve.

Compared with the prior art, the valve for preventing electrochemical corrosion has the following advantages:

1. the utility model discloses a valve for preventing electrochemical corrosion, which is characterized in that sealing rings are arranged at two ends of the contact position of a valve shaft and a valve plate, so as to prevent a medium from entering a gap between the contact part of the valve shaft and the valve plate to form a micro battery and generate electrochemical corrosion;

2. the utility model discloses a valve for preventing electrochemical corrosion, through setting up O type sealing washer at the taper pin both ends, further prevent that the medium from getting into the clearance of valve shaft, valve plate and taper pin contact part and forming little battery, produce electrochemical corrosion;

3. a prevent electrochemical corrosion's valve, the coating that adopts the anticorrosion of outer surface in the valve carries out the spraying, further prevent valve body, valve plate corrosion, isolated different materials form little battery, prevent to produce electrochemical corrosion.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic diagram of a simple structure of an anticorrosion valve of the invention;

fig. 2 is a schematic structural view of the taper pin according to the present invention;

description of reference numerals:

1-a valve body; 2-a valve plate; 3-taper pin; 4-a valve shaft; 5-shaft sleeve; 6-Yx sealing ring; 7-a sealing ring; 8-second sealing ring; 9-a gasket; 10-nut.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. 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," "second," etc. 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 otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1-2, a valve for preventing electrochemical corrosion comprises a valve main body 1, a valve plate 2 and a valve shaft 4, wherein a first through hole is formed in the valve main body 1, a second through hole is formed in the valve plate 2, one end of the valve shaft 4 penetrates through the first through hole of the valve main body 1, the other end of the valve shaft 4 is arranged in the second through hole of the valve plate 2, the valve shaft 4 and the valve plate 2 are fixedly connected through a conical pin 3, a first sealing ring 7 is respectively sleeved at two ends of the conical pin 3, and the conical pin 3 sequentially penetrates through the valve plate 2 and the valve shaft 4; a Yx sealing ring 6 and a shaft sleeve 5 are arranged between the valve shaft 4 and the valve main body 1, the Yx sealing ring 6 is positioned at one end close to the valve plate 2, and the shaft sleeve 5 is positioned at one end far away from the valve plate 2; a second sealing ring 8 is arranged between the valve shaft 4 and the valve plate 2, and the second sealing ring 8 is positioned at two ends of the second through hole; specifically, in order to prevent electrochemical corrosion between the valve plate 2 and the valve shaft 4, sealing rings are arranged at two ends of the contact position of the valve shaft 4 and the valve plate 2, and a medium is prevented from entering a gap between the contact part of the valve shaft 4 and the valve plate 2 to form a micro battery to prevent electrochemical corrosion.

One end of the taper pin 3 is a thick end, the other end of the taper pin 3 is a thin end, the thin end of the taper pin 3 is connected with a nut 10 in a threaded mode, and a gasket 9 is arranged between the valve plate 2 and the nut 10. The outer wall of 3 thick head ends of taper pin and thin head end has seted up the round recess respectively, and a sealing washer 7 is located the recess, and a sealing washer 7 is O type sealing washer, fixes valve shaft 4 and valve plate 2 for better, and the quantity of taper pin 3 is preferred 2. Specifically, after the valve shaft 4 is connected with the valve plate 2, the valve shaft is matched with a pin hole, as the taper pin 3 has an angle, one end is thick and the other end is thin, when the pin hole needs to be inserted, the thin head part is inserted firstly, the thin head part is a sealing type thread and is fixedly connected to the side wall of one side of the valve plate 2 through a nut 10, and a gasket 9 is arranged between the nut 10 and the valve plate 2 in order to further improve the sealing property; the circle of recess has been seted up respectively at the both ends that taper pin 3 and valve plate 2 contacted, and the O type sealing washer is placed in the recess, and the O type sealing washer not only has sealed effect still has elasticity, makes the taper pin be connected inseparabler with the valve plate valve shaft, can make interference fit even if having needs, and further the clearance that prevents medium entering valve shaft 4, valve plate 2 and taper pin 3 contact segment forms little battery, produces electrochemical corrosion.

The valve is characterized in that the Yx sealing ring 6 is of a dry structure, the first sealing ring 7 and the second sealing ring 8 are made of rubber materials, the valve plate 2 is made of nodular cast iron materials, the valve shaft 4 and the taper pin 3 are made of stainless steel materials, particularly, the valve plate 2 is made of nodular cast iron materials, and the valve shaft 4 and the taper pin 3 are made of stainless steel materials and are easily corroded by media; the Yx sealing ring 6 is arranged at the front end of the valve body 1, which is in contact with the valve shaft 4, and the Yx sealing ring 6 is of a dry structure, so that firstly, silt is prevented from entering the shaft sleeve to damage the shaft sleeve and seal the shaft end, and secondly, a medium is prevented from entering a gap between the valve shaft and the contact part of the valve body to form a micro battery, and electrochemical corrosion is generated.

The utility model relates to a prevent electrochemical corrosion's valve's use: firstly, a second sealing ring 8 is sleeved on the outer wall of a valve shaft 4, then the valve shaft 4 is connected with a valve plate 2, and the second sealing ring 8 is positioned at two ends of the valve shaft 4 connected with the valve plate 2 to prevent a medium from corroding a valve through the joint of the valve shaft 4 and the valve plate 2; after the valve shaft 4 is connected with the valve plate 2, a pin hole is formed in the valve shaft, the pin hole penetrates through the side walls of the valve plate 2 and the valve shaft 4, the conical pin 3 is inserted into the pin hole, electrochemical corrosion is placed for further improving sealing performance, the thin end of the conical pin 3 is inserted into the pin hole, a sealing type thread is arranged at the top end of the thin end, and the nut 10 is screwed into the sealing type thread section to fix the thin end.

A Yx sealing ring 6 and a shaft sleeve 5 are sleeved on the outer wall of the valve shaft 4 which is in contact with the valve body 1; thereby axle sleeve 5 can guarantee that valve shaft 4 can rotate and drive valve plate 2 and carry out work.

The inner surface and the outer surface of the valve are sprayed with anticorrosive paint, and the anticorrosive paint can be epoxy high-solid drinking water tank paint finish or epoxy thick paste type finish, so that the valve body 1 and the valve plate 2 are prevented from being rusted, different materials are isolated to form a micro battery, and electrochemical corrosion is prevented.

A valve structure for preventing electrochemical corrosion be applicable to all valves (including but not limited to butterfly valve, ball valve) among the prior art and prevent corrosion to improve the life of valve.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A valve for preventing electrochemical corrosion, comprising: the valve comprises a valve main body (1), a valve plate (2) and a valve shaft (4), wherein a first through hole is formed in the valve main body (1), a second through hole is formed in the valve plate (2), one end of the valve shaft (4) penetrates through the first through hole of the valve main body (1), the other end of the valve shaft is arranged in the second through hole of the valve plate (2), the valve shaft (4) and the valve plate (2) are fixedly connected through a conical pin (3), a first sealing ring (7) is sleeved at each of two ends of the conical pin (3), and the conical pin (3) sequentially penetrates through the valve plate (2) and the valve shaft (4);

a Yx sealing ring (6) and a shaft sleeve (5) are arranged between the valve shaft (4) and the valve main body (1), the Yx sealing ring (6) is positioned at one end close to the valve plate (2), and the shaft sleeve (5) is positioned at one end far away from the valve plate (2);

a second sealing ring (8) is arranged between the valve shaft (4) and the valve plate (2), and the second sealing ring (8) is located at two ends of the second through hole.

2. A valve for preventing electrochemical corrosion according to claim 1, wherein: one end of the taper pin (3) is a thick end, the other end of the taper pin (3) is a thin end, and the thin end of the taper pin (3) is in threaded connection with a nut (10).

3. A valve for preventing electrochemical corrosion according to claim 1, wherein: the outer walls of the thick head end and the thin head end of the taper pin (3) are respectively provided with a circle of groove, a first sealing ring (7) is positioned in the grooves, and the first sealing ring (7) is an O-shaped sealing ring.

4. A valve for preventing electrochemical corrosion according to claim 2, wherein: and a gasket (9) is arranged between the valve plate (2) and the nut (10).

5. A valve for preventing electrochemical corrosion according to claim 1, wherein: the Yx sealing ring (6) is of a dry structure.

6. A valve for preventing electrochemical corrosion according to claim 1, wherein: the first sealing ring (7) and the second sealing ring (8) are made of rubber.

7. A valve for preventing electrochemical corrosion according to claim 1, wherein: the valve plate (2) is made of nodular cast iron.

8. A valve for preventing electrochemical corrosion according to claim 1, wherein: the valve shaft (4) and the taper pin (3) are made of stainless steel materials.

9. The valve of claim 2, wherein: the number of the taper pins (3) is two.

10. A valve for preventing electrochemical corrosion according to claim 1, wherein: and a layer of anticorrosive paint is arranged on the inner surface and the outer surface of the valve.

Images