CN219932981U

CN219932981U - Seawater-resistant butterfly valve

Info

Publication number: CN219932981U
Application number: CN202321058522.8U
Authority: CN
Inventors: 王洪运; 王雄文; 杨宇茂; 喻明武
Original assignee: Hubei Hongcheng General Machinery Co ltd
Current assignee: Hubei Hongcheng General Machinery Co ltd
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-10-31
Anticipated expiration: 2033-04-26

Abstract

The utility model relates to the technical field of butterfly valves, and provides a seawater-resistant butterfly valve which comprises a valve body, a self-lubricating bearing, a valve shaft and a butterfly plate; the bearing sleeve comprises a sleeve and an end plate, and a sealant groove is formed in the outer side of one end of the sleeve; the end plate is integrally arranged at one end of the sleeve away from the sealant groove and is propped against the outer side of the valve body; the butterfly plate is fixedly arranged at the end part of the valve shaft and used for selectively blocking the valve body. According to the butterfly valve, the sealing groove and the sealing glue groove are formed in one end, close to the butterfly plate, of the sleeve, the end plate is arranged at the other end of the sleeve, the sealing gasket and the seawater-resistant sealing glue are used for sealing the sleeve and the valve body, and the end plate is used for supporting the valve body, so that the connecting gap between the sleeve and the valve body can be covered, seawater medium in the butterfly valve and air outside the butterfly valve can be effectively prevented from penetrating into the connecting gap between the sleeve and the valve body, and the seawater corrosion resistance of the butterfly valve is improved.

Description

Seawater-resistant butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a seawater-resistant butterfly valve.

Background

The butterfly valve is used as a mature valve, is widely applied to various industrial and civil pipelines, plays a role in communicating or cutting off media, and when the butterfly valve is applied to the field of seawater, the valve body is corroded by the seawater, so that the butterfly valve has better corrosion resistance compared with butterfly valves in other application fields.

The utility model of the prior publication number CN203363213U discloses a dry shaft type seawater-resistant butterfly valve, a valve shaft is arranged in a self-lubricating bearing, the self-lubricating bearing is arranged in a bearing bush, and the self-lubricating bearing and the bearing bush are separated; the butterfly plate adopts a blind hole design, the end part of the shaft hole of the butterfly plate adopts a blind hole, and the connection mode with the valve shaft is blind taper pin connection or key connection; a sealing gasket is arranged between the bearing bush and the butterfly plate in the axial direction, and a plurality of O-shaped sealing rings are arranged outside the bearing bush; rubber is lined at the contact part of the valve body and the butterfly plate with seawater; the problem of corrosion of sea water is effectively solved, the friction moment of the shafting part is greatly reduced, the service life is long, and the operation is light.

In the above-mentioned technical scheme, in order to make things convenient for self-lubricating bearing's installation and dismantlement, reduce self-lubricating bearing and the friction of valve body, set up bearing bush in self-lubricating bearing's the outside, however, bearing bush's setting can make produce the gap between bearing bush and the valve body, when the butterfly valve is applied to in the sea water field, sea water medium in the butterfly valve and the outside air of butterfly valve can permeate this gap, cause the corruption of valve body and bearing bush, influence the life of butterfly valve.

Disclosure of Invention

In view of the above, the utility model provides a seawater-resistant butterfly valve, which can prevent seawater medium in the butterfly valve and air outside the butterfly valve from penetrating into a connecting gap between a sleeve and a valve body by using the supporting of an end plate and the valve body, thereby improving the corrosion-resistant effect of the device.

The technical scheme of the utility model is realized as follows: the utility model provides a seawater-resistant butterfly valve, which comprises a valve body, a self-lubricating bearing, a valve shaft and a butterfly plate, wherein,

the valve body is provided with a valve hole;

the bearing sleeve comprises a sleeve pipe and an end plate, wherein,

the sleeve is fixedly arranged in the valve hole, and a sealant groove is formed in the outer side of one end of the sleeve;

the end plate is integrally arranged at one end of the sleeve away from the sealant groove and is propped against the outer side of the valve body;

the self-lubricating bearing is fixedly arranged in the sleeve;

the valve shaft penetrates through the self-lubricating bearing and is rotationally connected with the self-lubricating bearing;

the butterfly plate is fixedly arranged at the end part of the valve shaft and used for selectively blocking the valve body.

On the basis of the technical scheme, preferably, the valve body is provided with a sinking groove, and the sinking groove is positioned at one end of the valve hole far away from the butterfly plate and is coaxially arranged with the valve hole;

the end plate is positioned in the sinking groove, and the outer diameter of the end plate is equal to the inner diameter of the sinking groove.

Still more preferably, the end plate is fixedly connected with the valve body by a bolt.

Still more preferably, the valve hole is composed of a mounting section, a holding section and a flaring section, wherein,

the mounting section is positioned at one end of the valve hole, which is close to the butterfly plate, the flaring section is positioned at one end of the valve hole, which is far away from the butterfly plate, the mounting section and the flaring section are cylindrical through holes, and the inner diameter of the mounting section is smaller than that of the flaring section;

the supporting section is positioned between the mounting section and the flaring section and is communicated with the mounting section and the flaring section, and the supporting section is of a conical hole-shaped structure;

the outer side of the sleeve is abutted against the mounting section, the abutting section and the flaring section.

Still more preferably, the inner and outer sides of the sleeve close to one end of the butterfly plate and one side of the end plate close to the valve body are both provided with sealing grooves for installing sealing gaskets.

On the basis of the technical scheme, the valve further comprises a filling compression ring, wherein the filling compression ring is sleeved on the valve shaft and is connected with the valve body in a bolt fixing mode;

and one end, far away from the butterfly plate, of the sleeve is provided with a filling groove, and one end of the filling compression ring is positioned in the filling groove and is in sliding connection with the filling groove.

Still more preferably, the outer side of the filling compression ring is stepped.

On the basis of the technical scheme, preferably, the butterfly plate is provided with a shaft hole, the shaft hole is of a blind hole structure, and one end of the valve shaft is fixedly arranged in the shaft hole.

Still more preferably, the butterfly plate is provided with a ring groove, and the ring groove is positioned at one end of the shaft hole, which is close to the valve body, and is coaxially arranged with the shaft hole;

the annular groove is internally and fixedly provided with a spacer bush which is sleeved on the valve shaft, and both the inner side and the outer side of the spacer bush are provided with sealing grooves for installing sealing gaskets.

Still more preferably, the outer side of the valve shaft, which is close to one end of the butterfly plate, is in a step shape, and the spacer is abutted against the valve shaft at one side of the valve shaft, which is far away from the valve body.

Compared with the prior art, the seawater-resistant butterfly valve has the following beneficial effects:

(1) The sealing groove and the sealing glue groove are formed in one end, close to the butterfly plate, of the sleeve, the end plate is arranged at the other end of the sleeve, the sealing gasket and the seawater-resistant sealing glue are utilized to seal the sleeve and the valve body, and the end plate supports the valve body, so that a connecting gap between the sleeve and the valve body can be covered, seawater medium in the butterfly valve and air outside the butterfly valve are effectively prevented from penetrating into the connecting gap between the sleeve and the valve body, and the seawater corrosion resistance of the butterfly valve is improved;

(2) By arranging the propping section into a cone shape, not only can the connection gap between the propping section and the sleeve be reduced by utilizing the propping of the propping section and the sleeve, but also the sleeve can be prevented from sliding in the use process by being matched with the fixed connection of the end plate and the valve body, so that the fixing firmness of the bearing sleeve is improved;

(3) Through setting up the shaft hole into the blind hole, set up the spacer in the annular to set up the seal groove on bearing housing and spacer, can promote the sealed effect of this butterfly valve.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a seawater-resistant butterfly valve of the utility model;

FIG. 2 is an enlarged view of the seawater-resistant butterfly valve of the utility model at A in FIG. 1;

FIG. 3 is an enlarged view of the seawater-resistant butterfly valve of the utility model at B in FIG. 1;

FIG. 4 is a cross-sectional view of the valve opening of the seawater-resistant butterfly valve of the present utility model;

FIG. 5 is a cross-sectional view of the present utility model at the shaft hole in a seawater-resistant butterfly valve;

FIG. 6 is a perspective view of the sleeve side of the bearing housing in the seawater-resistant butterfly valve of the present utility model;

fig. 7 is a perspective view of the end plate side of the bearing housing in the seawater-resistant butterfly valve of the utility model.

Wherein: 1. a valve body; 101. a valve hole; 1011. a mounting section; 1012. a holding section; 1013. a flaring section; 102. sinking grooves; 2. a bearing sleeve; 21. a sleeve; 22. an end plate; 201. sealing grooves; 202. filling the groove; 203. a sealant groove; 3. self-lubricating bearings; 4. a valve shaft; 5. a butterfly plate; 51. a spacer bush; 501. a shaft hole; 502. a ring groove; 6. and filling the compression ring.

Detailed Description

The following description of the embodiments of the present utility model will clearly and fully describe the technical aspects of the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

As shown in fig. 1 to 7, the seawater-resistant butterfly valve of the utility model comprises a valve body 1, a bearing sleeve 2, a self-lubricating bearing 3, a valve shaft 4 and a butterfly plate 5.

Wherein, valve body 1 is the shell of butterfly valve, has seted up valve opening 101 on the valve body 1.

The bearing sleeve 2 comprises a sleeve 21 and an end plate 22, wherein the sleeve 21 is fixedly arranged in the valve hole 101, a sealant groove 203 is formed in the outer side of one end of the sleeve 21 and used for filling seawater-resistant sealant, the connection tightness of the sleeve 21 and the valve body 1 is improved, and the end plate 22 is integrally arranged at one end of the sleeve 21 away from the sealant groove 203 and propped against the outer side of the valve body 1; by means of the supporting of the end plate 22 and the valve body 1 and the sealing of the seawater sealant, the connecting gap between the sleeve 21 and the valve body 1 can be plugged, and seawater medium inside the butterfly valve and outside air are prevented from penetrating along the connecting gap between the sleeve 21 and the valve body 1, so that corrosion damage is caused to the sleeve 21 and the valve body 1.

The self-lubricating bearing 3 plays a role of reducing friction, and the self-lubricating bearing 3 is fixedly arranged in the sleeve 21.

The valve shaft 4 is an opening and closing control mechanism of a butterfly valve, and the valve shaft 4 penetrates through the self-lubricating bearing 3 and is rotationally connected with the self-lubricating bearing, so that when the valve shaft 4 rotates, the self-lubricating bearing 3 and the sleeve 21 can rotate relatively.

The butterfly plate 5 is used for selectively plugging the valve body 1, the butterfly plate 5 is fixedly arranged at the end part of the valve shaft 4, and when the valve shaft 4 is rotated, the butterfly plate 5 can be driven to rotate, so that the valve body 1 is selectively plugged, and the flow of medium in the valve body 1 is controlled.

Further, a sinking groove 102 may be formed on the valve body 1, so that the sinking groove 102 is located at one end of the valve hole 101 away from the butterfly plate 5 and is coaxially arranged with the valve hole, the end plate 22 is located in the sinking groove 102, and the outer diameter of the end plate 22 is equal to the inner diameter of the sinking groove 102, as shown in fig. 2, the right side and the peripheral side of the end plate 22 are abutted against the sinking groove 102, so that the abutting area of the end plate 22 and the valve body 1 is increased, and the abutting tightness of the end plate 22 and the valve body 1 is improved.

Further, as shown in fig. 2, in order to prevent the bearing housing 2 from sliding or separating from the valve body 1 during operation of the butterfly valve, the end plate 22 may be fixedly connected to the valve body 1 by bolts.

As a preferred embodiment, as shown in fig. 4, the valve hole 101 may be formed by a mounting section 1011, an abutting section 1012 and a flaring section 1013, where the mounting section 1011 is located at one end of the valve hole 101 near the butterfly plate 5, the flaring section 1013 is located at one end of the valve hole 101 far away from the butterfly plate 5, the mounting section 1011 and the flaring section 1013 are both cylindrical through holes, the inner diameter of the mounting section 1011 is smaller than that of the flaring section 1013, the abutting section 1012 is located between the mounting section 1011 and the flaring section 1013 and is communicated with the mounting section 1011 and the flaring section 1013, the abutting section 1012 is in a conical hole structure, the outer side of the sleeve 21 abuts against the mounting section 1011, the abutting section 1012 and the flaring section 1013, and by means of abutting of the sleeve 21 against the abutting section 1012, the gap between the sleeve 21 and the abutting section 1012 can be reduced, and the sealing performance of the two can be improved, and at the same time, as shown in fig. 1, the sleeve 21 is prevented from sliding in the use process by the fixed connection of the end plate 22 and the valve body 1, thereby improving the fixing degree of the bearing sleeve 21.

In order to improve the tightness between the bearing sleeve 2 and the valve body 1, sealing grooves 201 for installing sealing gaskets can be formed in the inner side and the outer side of one end of the sleeve 21, which is close to the butterfly plate 5, and in the side of the end plate 22, which is close to the valve body 1, and when the sealing gaskets are installed in the sealing grooves 201, seawater can be effectively prevented from penetrating into the self-lubricating bearing 3.

In order to improve the tightness of the self-lubricating bearing 3, the bearing sleeve 2 and the valve shaft 4, a filling compression ring 6 can be further arranged, the filling compression ring 6 is sleeved on the valve shaft 4 and is connected with the valve body 1 in a bolt fixing mode, one end, away from the butterfly plate 5, of the sleeve 21 is provided with a filling groove 202, one end of the filling compression ring 6 is positioned in the filling groove 202 and is in sliding connection with the filling groove 202, and as shown in fig. 2, a closed cavity is formed among the filling groove 202, the sleeve 21, the self-lubricating bearing 3 and the valve shaft 4 and is used for filling shaft seal packing, so that the position is sealed, and seawater leakage is prevented.

Further, the outer side of the filling press ring 6 may be set to be stepped, as shown in fig. 2, when the filling press ring 6 moves rightwards, the stepped raised surface on the outer side of the filling press ring may abut against the end plate 22, so that the tightness between the filling press ring 6 and the bearing sleeve 2 is improved.

As a preferred embodiment, the butterfly plate 5 is provided with a shaft hole 501, the shaft hole 501 is in a blind hole structure, one end of the valve shaft 4 is fixedly arranged in the shaft hole 501, and as shown in fig. 5, by arranging the shaft hole 501 in a blind hole structure, relative to the through hole structure, the butterfly plate can prevent seawater from penetrating between the valve shaft 4 and the shaft hole 501; the butterfly plate 5 may be provided with a ring groove 502, the ring groove 502 is located at one end of the shaft hole 501 close to the valve body 1 and is coaxially arranged with the shaft hole, a spacer bush 51 is fixedly arranged in the ring groove 502, the spacer bush 51 is sleeved on the valve shaft 4, and both the inner side and the outer side of the spacer bush are provided with sealing grooves 201 for installing sealing gaskets, as shown in fig. 1, when the sealing gaskets are installed in the sealing grooves 201, the sealing performance of the valve shaft 4 and the shaft hole 501 can be improved, and seawater infiltration is prevented.

Further, the outer side of the valve shaft 4, which is close to one end of the butterfly plate 5, can be in a step shape, and one side, which is far away from the valve body 1, of the spacer bush 51 is propped against the valve shaft 4, as shown in fig. 3, a step convex surface of the valve shaft 4 is propped against the left side of the spacer bush 51, so that the tightness between the spacer bush 51 and the valve shaft 4 can be improved, and the sealing effect and the seawater corrosion resistance effect of the butterfly valve are improved.

The working principle of the seawater-resistant butterfly valve is as follows:

as shown in fig. 1, since the end plate 22 abuts against the valve body 1, sealing connection is formed between the end plate 22 and the valve body 1, and the sealing glue groove 203 and the sealing groove 201 are formed on the sleeve 21, both ends of the bearing sleeve 2 can be sealed by filling seawater-resistant sealing glue into the sealing glue groove 203 and installing sealing gaskets into the sealing groove 201, and the sleeve 21 can abut against the abutting section 1012 to be extruded by matching with fastening bolts, so that seawater or other impurities can be prevented from penetrating between the sleeve 21 and the valve body 1; the left end of the sleeve 21 is also provided with the filling compression ring 6, so that the filling groove 202 can be filled with shaft seal filler, thereby preventing the leakage of seawater; because the shaft hole 501 is of a blind hole structure, and the spacer bush 51 is arranged at the connecting position of the shaft hole 501 and the valve shaft 4, medium in the butterfly valve can be effectively prevented from penetrating into the shaft hole 501, and therefore the corrosion resistance of the butterfly valve is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The seawater-resistant butterfly valve comprises a valve body (1), a self-lubricating bearing (3), a valve shaft (4) and a butterfly plate (5), wherein,

a valve hole (101) is formed in the valve body (1);

the method is characterized in that: the bearing sleeve (2) is further included, the bearing sleeve (2) comprises a sleeve (21) and an end plate (22), wherein,

the sleeve (21) is fixedly arranged in the valve hole (101), and a sealant groove (203) is formed in the outer side of one end of the sleeve (21);

the end plate (22) is integrally arranged at one end of the sleeve (21) far away from the sealant groove (203) and is propped against the outer side of the valve body (1);

the self-lubricating bearing (3) is fixedly arranged in the sleeve (21);

the valve shaft (4) penetrates through the self-lubricating bearing (3) and is rotationally connected with the self-lubricating bearing;

the butterfly plate (5) is fixedly arranged at the end part of the valve shaft (4) and used for selectively blocking the valve body (1).

2. The seawater-resistant butterfly valve of claim 1, wherein: a sinking groove (102) is formed in the valve body (1), and the sinking groove (102) is positioned at one end of the valve hole (101) far away from the butterfly plate (5) and is coaxially arranged with the valve hole;

the end plate (22) is positioned in the sink (102), and the outer diameter of the end plate (22) is equal to the inner diameter of the sink (102).

3. The seawater-resistant butterfly valve of claim 2, wherein: the end plate (22) is fixedly connected with the valve body (1) through bolts.

4. A seawater-resistant butterfly valve as claimed in claim 3, wherein: the valve hole (101) is composed of a mounting section (1011), a supporting section (1012) and a flaring section (1013), wherein,

the installation section (1011) is positioned at one end of the valve hole (101) close to the butterfly plate (5), the flaring section (1013) is positioned at one end of the valve hole (101) far away from the butterfly plate (5), the installation section (1011) and the flaring section (1013) are both cylindrical through holes, and the inner diameter of the installation section (1011) is smaller than the inner diameter of the flaring section (1013);

the supporting section (1012) is positioned between the mounting section (1011) and the flaring section (1013) and is communicated with the mounting section (1011) and the flaring section (1013), and the supporting section (1012) is of a conical hole-shaped structure;

the outer sides of the sleeve (21) are abutted against the mounting section (1011), the abutting section (1012) and the flaring section (1013).

5. The seawater-resistant butterfly valve of claim 4, wherein: the inner side and the outer side of the sleeve (21) close to one end of the butterfly plate (5) and one side of the end plate (22) close to the valve body (1) are both provided with sealing grooves (201) for installing sealing gaskets.

6. The seawater-resistant butterfly valve of any one of claims 1-5, wherein: the valve further comprises a filling compression ring (6), wherein the filling compression ring (6) is sleeved on the valve shaft (4) and is connected with the valve body (1) in a bolt fixing mode;

a filling groove (202) is formed in one end, far away from the butterfly plate (5), of the sleeve (21), and one end of the filling compression ring (6) is located in the filling groove (202) and is connected with the filling groove in a sliding mode.

7. The seawater-resistant butterfly valve of claim 6, wherein: the outer side of the filling compression ring (6) is stepped.

8. The seawater-resistant butterfly valve of claim 1, wherein: the butterfly plate (5) is provided with a shaft hole (501), the shaft hole (501) is of a blind hole structure, and one end of the valve shaft (4) is fixedly arranged in the shaft hole (501).

9. The seawater-resistant butterfly valve of claim 8, wherein: the butterfly plate (5) is provided with a ring groove (502), and the ring groove (502) is positioned at one end of the shaft hole (501) close to the valve body (1) and is coaxially arranged with the shaft hole;

the annular groove (502) is internally and fixedly provided with a spacer bush (51), the spacer bush (51) is sleeved on the valve shaft (4), and both the inner side and the outer side of the spacer bush are provided with sealing grooves (201) for installing sealing gaskets.

10. The seawater-resistant butterfly valve of claim 9, wherein: the outer side of the valve shaft (4) close to one end of the butterfly plate (5) is in a step shape, and one side of the spacer bush (51) far away from the valve body (1) is abutted against the valve shaft (4).