CN217328513U

CN217328513U - High-flexibility strong-erosion-resistant butterfly valve

Info

Publication number: CN217328513U
Application number: CN202221090046.3U
Authority: CN
Inventors: 张建王; 葛春洁
Original assignee: Guogong Valve Co ltd
Current assignee: Guogong Valve Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-08-30
Anticipated expiration: 2032-05-06

Abstract

The utility model provides a high flexibility is able to bear or endure strong erosion butterfly valve belongs to butterfly valve technical field, and it includes the valve body, be provided with the rotatable valve rod in the valve body, the valve rod is connected with the butterfly plate that can rotate in step, still includes first protective sheath and the second protective sheath that sets up at the valve body inner wall, first protective sheath and second protective sheath both ends all set up the fixed cover that the cross-section is L shape and fix with the valve body, be equipped with the butterfly plate sealing ring on the butterfly plate, the butterfly plate surface is provided with the protective layer; the utility model is provided with the first protective sleeve and the second protective sleeve on the inner wall of the valve body to protect the inner wall of the valve body and reduce the loss under the erosion of the medium, and the first protective sleeve and the second protective sleeve are fixed with the valve body through the fixed sleeve, thereby being convenient for maintenance and replacement and simple in assembly; meanwhile, the protective layer is arranged on the outer wall of the butterfly plate, so that the damage of the butterfly plate under the medium erosion is reduced, the fastener for installing the butterfly plate sealing ring can be protected, and the service life of the valve is greatly prolonged.

Description

High-flexibility strong-erosion-resistant butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field, concretely relates to resistant erosion butterfly valve of strong of high flexibility.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk.

The butterfly valve is a valve which uses a disc type opening and closing piece to rotate back and forth by about 90 degrees to open, close or adjust the medium flow. The butterfly valve has the advantages of simple structure, small volume, light weight, less material consumption, small installation size, small driving moment, simple and convenient operation and rapidness, and simultaneously has good flow regulation function and sealing closing characteristic, thereby being one of the fastest valve varieties developed in the last ten years. Butterfly valves are widely used. The variety and number of uses thereof are still continuously expanding and are developing toward high temperature, high pressure, large caliber, high sealing property, long life, excellent regulation property, and one-valve multi-function. The reliability and other performance indexes of the composite material reach higher levels.

The butterfly valve in the prior art has a relatively common wear-resisting effect, can cause wear to the valve body after long-term use, has a poor corrosion-resisting effect, and is easily corroded by corrosive liquid, so that the service life of the butterfly valve is influenced; particularly, when the butterfly valve is used for corrosive or acid-base media, the interior of the butterfly valve is easily corroded, the sealing performance is further reduced, and the existing butterfly valve is troublesome to connect with a pipeline and is not flexible.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide a resistant strong erosion butterfly valve of high flexibility.

The utility model discloses the technical scheme who takes as follows: high flexibility is resistant to strong erosion butterfly valve, including the valve body, be provided with rotatable valve rod in the valve body, the valve rod is connected with the pivoted butterfly plate in step, still including setting up first protective sheath and the second protective sheath at the valve body inner wall, first protective sheath is located with the second protective sheath the valve rod both sides, be connected with the disk seat on the first protective sheath, first protective sheath all sets up the fixed cover that the cross-section appears for L with the second protective sheath both ends and fixes with the valve body, be equipped with the butterfly plate sealing ring on the butterfly plate, the butterfly plate surface all is provided with the protective layer except the mounted position of butterfly plate sealing ring.

The butterfly plate sealing ring comprises a first sealing ring and a second sealing ring, and the first sealing ring and/or the second sealing ring are made of metal materials.

Still include the adapter sleeve, the valve body both sides all are equipped with flange portion, flange portion circumference outer wall is equipped with the external screw thread section, the adapter sleeve internal perisporium is equipped with the internal thread section with the external screw thread adaptation.

The cross section of the connecting sleeve is L-shaped, and the end face of the folded angle of the connecting sleeve is abutted against the folded angle of the flange part.

The terminal surface of flange portion is equipped with multichannel seal groove, install the sealing washer in the seal groove.

The valve rod with both ends junction all is equipped with spacing subassembly about the butterfly plate, spacing subassembly includes stop collar, axle sleeve and axle sleeve packing ring, stop collar one end periphery is equipped with first flange portion, the valve body inner wall is equipped with second flange portion, the lower terminal surface of first flange portion and the up end looks butt of second flange portion, the other end and the butterfly plate butt of stop collar, the axle sleeve packing ring sets up between stop collar and axle sleeve.

The shaft sleeve is provided with a stuffing box above, and a stuffing bottom cover, a first sealing assembly, a partition plate assembly, a second sealing assembly and a stuffing gland are sequentially arranged in the stuffing box from bottom to top.

The first seal assembly and the second seal assembly each include at least two layers of packing.

The valve body is connected with a valve cover, and the valve rod penetrates through the valve cover to be connected with an operating handle.

The valve rod is arranged on the valve rod, and the valve rod is matched with the valve rod in a locking mode.

The utility model has the advantages as follows: the utility model is provided with the first protective sleeve and the second protective sleeve on the inner wall of the valve body to protect the inner wall of the valve body and reduce the loss under the erosion of the medium, and the first protective sleeve and the second protective sleeve are fixed with the valve body through the fixed sleeve, thereby being convenient for maintenance and replacement and simple in assembly; meanwhile, the protective layer is arranged on the outer wall of the butterfly plate, so that the damage of the butterfly plate under the medium erosion is reduced, a fastener for mounting a butterfly plate sealing ring can be protected, and the service life of the valve is greatly prolonged; in addition, still be equipped with supporting adapter sleeve and can pass through screw thread quick assembly disassembly with between the pipeline, the flexibility is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is an enlarged view at C of FIG. 1;

in the figure, 1-a valve body, 2-a valve rod, 3-a butterfly plate, 4-a first protection sleeve, 5-a second protection sleeve, 6-a valve seat, 7-a valve seat, 8-a butterfly plate sealing ring, 81-a first sealing ring, 82-a second sealing ring, 9-a protection layer, 10-a protection layer, 101-a flange part, 102-an external thread section, 103-an internal thread section, 104-a sealing groove, 105-a sealing ring, 106-a second flange part, 11-a limiting sleeve, 111-a first flange part, 12-a shaft sleeve, 13-a shaft sleeve gasket, 14-a packing bottom cover, 15-a first sealing assembly, 16-a first sealing assembly, 17-a second sealing assembly, 18-a packing gland, 19-a valve cover and 20-an operating handle, 21-locking hole, 22-locking screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.

The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 4, for the present invention provides an embodiment:

the high-flexibility strong-erosion-resistant butterfly valve comprises a valve body 1, wherein a rotatable valve rod 2 is arranged in the valve body 1, the valve rod 2 is connected with a butterfly plate 3 capable of synchronously rotating, and the butterfly valve is characterized by further comprising a first protective sleeve 4 and a second protective sleeve 5 which are arranged on the inner wall of the valve body 1, the first protective sleeve 4 and the second protective sleeve 5 are positioned on two sides of the valve rod 2, the first protective sleeve 4 is connected with a valve seat 6, in the embodiment, the first protective sleeve 4 and the valve seat 6 can be of an integral structure, two ends of the first protective sleeve 4 and the second protective sleeve 5 are respectively provided with a fixed sleeve 7 with an L-shaped cross section and fixed with the valve body 1, the first protective sleeve 4 and the second protective sleeve 5 are arranged on the inner wall of the valve body 1 and used for protecting the inner wall of the valve body 1 to reduce loss under medium erosion, and the first protective sleeve 4, the second protective sleeve 5 and the valve body 1 are fixed through the fixed sleeves 7, the maintenance and the replacement are convenient and the assembly is simple; be equipped with butterfly plate sealing ring 8 on

butterfly plate

3, 3 surfaces of butterfly plate all are provided with protective layer 9 except butterfly plate sealing ring 8's mounted position, are equipped with protective layer 9 at 3 outer walls of butterfly plate, reduce butterfly plate 3 damage under the medium erosion, can also protect the fastener that is used for installing butterfly plate sealing ring 8, the life of the valve of very big extension.

Further, butterfly plate sealing ring 8 is including hugging closely first sealing ring 81 and the second sealing ring 82 that sets up, first sealing ring 81 and/or second sealing ring 82 make for the metal material, and two sealing rings form double seal with disk seat 6, and can a sealing ring be the metal material, and another has elastic material like plastics etc. constitutes soft or hard double seal, still has certain elastic compensation, promotes the sealing performance of valve.

Further, still include

adapter sleeve

10, 1 both sides of valve body all are equipped with flange portion 101, flange portion 101 circumference outer wall is equipped with external screw thread section 102, adapter sleeve 10 internal perisporium be equipped with the internal thread section 103 of external screw thread section 102 adaptation, through setting up supporting adapter sleeve can with the pipeline between through screw thread quick assembly disassembly, the flexibility is high.

Furthermore, the cross section of the connecting sleeve 10 is L-shaped, and the end face of the corner of the connecting sleeve abuts against the corner of the flange 101, so that the connecting sleeve 10 is prevented from falling off from the valve and is convenient to move and transport.

Further, the end face of the flange portion 101 is provided with a plurality of sealing grooves 104, and sealing rings 105 are installed in the sealing grooves 104 to improve the sealing performance between the valve and the pipeline.

Further, the valve rod 2 with both ends junction all is equipped with spacing subassembly about the butterfly plate 3, spacing subassembly includes stop collar 11, axle sleeve 12 and axle

sleeve packing ring

13, 11 one end peripheries of stop collar are equipped with

first flange portion

111, 1 inner wall of valve body is equipped with second flange portion 106, the lower terminal surface of first flange portion 111 and the up end looks butt of second flange portion 106, the other end and the 3 butts of butterfly plate of stop collar 11, axle sleeve packing ring 13 sets up between stop collar 11 and axle sleeve 12, and current butterfly valve is mostly vertical installation, and butterfly plate 3 and valve rod 2 are owing to the gravity cluster from top to bottom, and set up spacing subassembly in this butterfly valve and solve this problem, prolong the life of butterfly valve, very big reduction use cost. Meanwhile, the upper end and the lower end of the butterfly plate 3 are respectively provided with a limiting groove matched with the end part of the limiting sleeve 11, the limiting sleeve 11 limits the axial direction of the upper end and the lower end of the butterfly plate 3, and one end of the limiting sleeve 11 is inserted into the limiting groove to limit the radial direction.

Further, a stuffing box is arranged above the shaft sleeve 12, and a stuffing bottom cover 14, a first sealing assembly 15, a partition plate assembly 16, a second sealing assembly 17 and a stuffing gland 18 are sequentially arranged in the stuffing box from bottom to top; the packing bottom cover 14 and the packing gland 18 ensure that the packing is positioned between the valve body 1 and the valve rod 2, the sealing performance between the valve body and the valve rod is improved, the medium leakage phenomenon is effectively avoided, and the service life of the valve is greatly prolonged.

Further, the first sealing component 15 and the second sealing component 17 each include at least two layers of packing. When one layer of the sealing component fails, the other layer still can play a role in sealing, wherein the packing can adopt packing with good sealing performance, such as back-to-back type V-shaped PTFE packing and the like.

Further, a valve cover 19 is connected to the valve body 1, and the valve rod 2 penetrates through the valve cover 19 to be connected with an operating handle 20. The upper end surface of the valve cover 19 is circumferentially provided with a locking hole 21 by taking the valve rod 2 as a center, and the operating handle 20 is provided with a locking screw 22 which is in locking fit with the locking hole 21. The locking hole 21 may be provided with a locking hole for opening and closing positions, and the locking hole locks the valve at the opening or closing position to prevent the operating handle 20 from rotating freely.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. High-flexibility strong-erosion-resistant butterfly valve, including valve body (1), be provided with rotatable valve rod (2) in valve body (1), valve rod (2) are connected with synchronous pivoted butterfly plate (3), its characterized in that, still including setting up first protective sheath (4) and second protective sheath (5) at valve body (1) inner wall, first protective sheath (4) are located with second protective sheath (5) valve rod (2) both sides, be connected with disk seat (6) on first protective sheath (4), first protective sheath (4) all set up fixed cover (7) and valve body (1) that the cross-section appears for L with second protective sheath (5) both ends and fix, be equipped with butterfly plate sealing ring (8) on butterfly plate (3), butterfly plate (3) surface all is provided with protective layer (9) except the mounted position of butterfly plate sealing ring (8).

2. The butterfly valve with high flexibility and strong erosion resistance according to claim 1, wherein the butterfly plate sealing ring (8) comprises a first sealing ring (81) and a second sealing ring (82) which are arranged in a close fit manner, and the first sealing ring (81) and/or the second sealing ring (82) are made of metal.

3. The butterfly valve with high flexibility and strong erosion resistance according to claim 1, further comprising a connecting sleeve (10), wherein flange portions (101) are arranged on two sides of the valve body (1), an external threaded section (102) is arranged on the circumferential outer wall of each flange portion (101), and an internal threaded section (103) matched with the external threaded section (102) is arranged on the inner circumferential wall of the connecting sleeve (10).

4. The butterfly valve with high flexibility and erosion resistance according to claim 3, wherein the connecting sleeve (10) has an L-shaped cross section, and the end face of the corner thereof abuts against the corner of the flange (101).

5. The butterfly valve with high flexibility and strong erosion resistance according to claim 3, wherein the end face of the flange portion (101) is provided with a plurality of sealing grooves (104), and a sealing ring (105) is installed in each sealing groove (104).

6. The butterfly valve with high flexibility and strong erosion resistance according to claim 1, wherein a limiting component is arranged at the connection position of the upper end and the lower end of the valve rod (2) and the butterfly plate (3), the limiting component comprises a limiting sleeve (11), a shaft sleeve (12) and a shaft sleeve gasket (13), a first flange portion (111) is arranged at the periphery of one end of the limiting sleeve (11), a second flange portion (106) is arranged on the inner wall of the valve body (1), the lower end face of the first flange portion (111) is abutted against the upper end face of the second flange portion (106), the other end of the limiting sleeve (11) is abutted against the butterfly plate (3), and the shaft sleeve gasket (13) is arranged between the limiting sleeve (11) and the shaft sleeve (12).

7. The butterfly valve with high flexibility and strong erosion resistance according to claim 6, wherein a stuffing box is arranged above the shaft sleeve (12), and a stuffing bottom cover (14), a first sealing assembly (15), a partition plate assembly (16), a second sealing assembly (17) and a stuffing cover (18) are sequentially arranged in the stuffing box from bottom to top.

8. The high flexibility high erosion resistant butterfly valve of claim 7, wherein the first seal assembly (15) and the second seal assembly (17) each comprise at least two layers of packing.

9. The butterfly valve with high flexibility and strong erosion resistance according to claim 1, characterized in that a valve cover (19) is connected to the valve body (1), and an operating handle (20) is connected to the valve rod (2) through the valve cover (19).

10. The butterfly valve with high flexibility and strong erosion resistance according to claim 9, wherein the valve cover (19) is provided with a locking hole (21) on the upper end surface around the valve rod (2), and the operating handle (20) is provided with a locking screw (22) which is in locking fit with the locking hole (21).