Double-eccentric bidirectional sealing butterfly valve

Abstract

The utility model discloses a double-eccentric two-way sealing butterfly valve which comprises a valve body, and a detachable two-way sealing mechanism and an installation assembly are installed on the valve body. The detachable two-way sealing mechanism comprises a valve body sealing shell, a valve body sealing ring, a valve plate sealing ring, a valve plate, a fixed ball head, a connecting rod, a rotating button, a bearing cylinder, a valve shaft, a first shaft sleeve and a second shaft sleeve. According to the butterfly valve, the detachable two-way sealing mechanism is installed, double-eccentric two-way design can be conducted on the butterfly valve, and therefore the sealing effect of the butterfly valve can be guaranteed when the butterfly valve faces complex working conditions and media in different flow directions, the sealing face which is abraded after long-term use can be replaced conveniently, and the sealing performance is improved to a certain degree; the stability of the valve body can be improved through connection and fixation of all parts of the metal shell, the fixing bolts and the fixing nuts, so that the possibility that the valve body is twisted due to external force is reduced, and convenience is provided for a user to disassemble and assemble when replacement is needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field especially relates to a double eccentric bidirectional sealing butterfly valve. BACKGROUND

[0002] With the continuous development of industry, various complex working conditions environment put forward higher requirements to the performance of the valve. Such as in petroleum, chemical industry, metallurgy industry, the nature of medium is complex and various, may contain solid particles, corrosive substance, high temperature and high pressure etc. These harsh working conditions require that the valve has good sealing performance, corrosion resistance, high temperature and high pressure resistance and low operating torque etc.

[0003] The existing butterfly valve has some shortcomings:

[0004] 1, the traditional butterfly valve mostly adopts single sealing mode, when facing complex working conditions and different flow direction medium, the sealing effect is difficult to guarantee, and the ordinary butterfly valve is easy to wear after long-term use, leading to the gradual decline of sealing performance;

[0005] 2, the traditional butterfly valve mostly is single layer setting, when installing, the valve body is easy to be distorted by external force, therefore, when needing to replace, it is inconvenient to disassemble and install. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the shortcomings in the prior art and provides a double eccentric bidirectional sealing butterfly valve.

[0007] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A double eccentric bidirectional sealing butterfly valve, including the valve body, the detachable bidirectional sealing mechanism and the installation assembly are installed on the valve body;

[0009] The detachable bidirectional sealing mechanism includes valve body sealing shell, valve body sealing ring, valve plate sealing ring, valve plate, fixed ball head, connecting rod, rotating knob, receiving cylinder, valve shaft, first shaft sleeve and second shaft sleeve, the outer wall of one side of valve body sealing ring is tightly connected on the inner side outer wall of valve body sealing shell, the valve plate sealing ring is covered on the outer wall of valve plate, the fixed ball head is welded with the top of connecting rod, the bottom of connecting rod is fixedly connected with the side surface of rotating knob, the top outer wall of valve shaft is screwing connection in the inside of receiving cylinder, the top end of valve shaft is connected with the bottom surface of rotating knob, the rotating knob is rotationally connected with the top surface of receiving cylinder, and the valve shaft is inserted on the eccentric shaft of valve plate.

[0010] Through the above scheme, the detachable bidirectional sealing mechanism is installed, the valve body sealing shell, the valve body sealing ring, the valve plate sealing ring, the valve plate, the fixed ball head, the connecting rod, the rotating knob, the receiving cylinder, the valve shaft, the first shaft sleeve and the second shaft sleeve are connected and arranged, the butterfly valve can be designed in a double eccentric and bidirectional manner, the sealing effect is guaranteed when facing complex working conditions and media with different flow directions, the sealing surface worn after long-term use can be replaced conveniently, and the sealing performance is improved to a certain extent.

[0011] Preferably, the mounting assembly comprises a metal shell, a fixing bolt and a fixing nut, the fixing bolt is screwed in the inside of the screw hole, and one end of the fixing bolt is in screw connection with the fixing nut.

[0012] Through the above scheme, the mounting assembly is installed, and the connection and fixation of the various components of the metal shell, the fixing bolt and the fixing nut can increase the stability of the valve body, thereby reducing the possibility of valve body distortion caused by external force, and providing convenience for users to disassemble and install when replacement is needed.

[0013] Preferably, the first shaft sleeve and the second shaft sleeve are respectively sleeved on the outer walls of the two ends of the valve shaft, the top surface of the first shaft sleeve is welded to the top inside of the valve body sealing shell, and the bottom of the second shaft sleeve is fixedly connected with the bottom surface of the valve body sealing shell.

[0014] Preferably, the surfaces of the valve body and the metal shell are provided with a plurality of screw holes, and the valve body and the metal shell are movably connected through the fixing bolt.

[0015] Preferably, the bottom of the receiving cylinder is clamped with the top surfaces of the valve body and the metal shell.

[0016] Preferably, the middle parts of the valve body and the metal shell are both open structures, and the valve body sealing shell is clamped on the inside surfaces of the valve body and the metal shell.

[0017] The utility model discloses the beneficial effects are:

[0018] 1. Through the installation of the detachable bidirectional sealing mechanism, the valve body sealing shell, the valve body sealing ring, the valve plate sealing ring, the valve plate, the fixed ball head, the connecting rod, the rotating knob, the receiving cylinder, the valve shaft, the first shaft sleeve and the second shaft sleeve are connected and arranged, the butterfly valve can be designed in a double eccentric and bidirectional manner, the sealing effect is guaranteed when facing complex working conditions and media with different flow directions, the sealing surface worn after long-term use can be replaced conveniently, and the sealing performance is improved to a certain extent.

[0019] 2. Through the fixation of the mounting assembly, the connection and fixation of the various components of the metal shell, the fixing bolt and the fixing nut can increase the stability of the valve body, thereby reducing the possibility of valve body distortion caused by external force, and providing convenience for users to disassemble and install when replacement is needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of a double-eccentric bidirectional sealing butterfly valve proposed by the utility model;

[0021] Figure 2 This is a structural cross-sectional view of a double-eccentric bidirectional sealing butterfly valve proposed in the utility model;

[0022] Figure 3 The figure is a structural side view of a double-eccentric bidirectional sealing butterfly valve proposed by the utility model.

[0023] In the figure: 1. Valve body; 2. Metal shell; 3. Fixing bolt; 4. Fixing nut; 5. Valve body sealing shell; 6. Valve body sealing ring; 7. Valve plate sealing ring; 8. Valve plate; 9. Fixing ball head; 10. Connecting rod; 11. Turning knob; 12. Socket cylinder; 13. Valve shaft; 14. First shaft sleeve; 15. Second shaft sleeve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Example 1, with reference to Figures 1-3 , a double eccentric bidirectional sealing butterfly valve, comprising a valve body 1, on which a detachable bidirectional sealing mechanism and a mounting assembly are mounted;

[0026] The detachable two-way sealing mechanism includes a valve body sealing shell 5, a valve body sealing ring 6, a valve plate sealing ring 7, a valve plate 8, a fixed ball head 9, a connecting rod 10, a rotating button 11, a receiving tube 12, a valve shaft 13, a first shaft sleeve 14 and a second shaft sleeve 15. The outer wall of one side of the valve body sealing ring 6 is tightly connected to the inner outer wall of the valve body sealing shell 5, the valve plate sealing ring 7 is covered on the outer wall of the valve plate 8, the fixed ball head 9 is welded to the top of the connecting rod 10, the bottom of the connecting rod 10 is fixedly connected to the surface of one side of the rotating button 11, the outer wall of the top of the valve shaft 13 is screwed to the inside of the receiving tube 12, and the top of the valve shaft 13 is screwed to the rotating button 11. The bottom surface of the butterfly valve is connected, the rotating button 11 is rotatably connected to the top surface of the receiving tube 12, the valve shaft 13 is inserted into the eccentric shaft of the valve plate 8, and a detachable two-way sealing mechanism is installed. The valve body sealing shell 5, valve body sealing ring 6, valve plate sealing ring 7, valve plate 8, fixed ball head 9, connecting rod 10, rotating button 11, receiving tube 12, valve shaft 13, first shaft sleeve 14 and second shaft sleeve 15 are connected. The connection setting can make the butterfly valve have a double eccentric and two-way design, thereby ensuring its sealing effect when facing complex working conditions and media with different flow directions, and conveniently replacing the sealing surface that is worn after long-term use, thereby improving the sealing performance to a certain extent.

[0027] Embodiment 2, refer to Figure 1 and Figure 2 , the mounting assembly comprises a metal shell 2, a fixing bolt 3 and a fixing nut 4, the fixing bolt 3 is screwed in the inside of the screw hole, one end of the fixing bolt 3 is screwedly connected with the fixing nut 4, the mounting assembly is mounted, the connection and fixation of each component of the metal shell 2, the fixing bolt 3 and the fixing nut 4 can increase the stability of the valve body 1, thereby reducing the possibility of the valve body being distorted caused by external force, and when replacement is needed, the user is provided with convenience for dismounting and mounting.

[0028] Embodiment 3, refer to Figures 1-3 , the first shaft sleeve 14 and the second shaft sleeve 15 are respectively sleeved on the outer walls of the two ends of the valve shaft 13, the top surface of the first shaft sleeve 14 is welded on the top inner side of the valve body sealing shell 5, the bottom of the second shaft sleeve 15 is fixedly connected with the bottom surface of the valve body sealing shell 5, the surfaces of the valve body 1 and the metal shell 2 are provided with a plurality of screw holes, the valve body 1 and the metal shell 2 are movably connected through the fixing bolt, the bottom of the receiving cylinder 12 is clamped with the top surfaces of the valve body 1 and the metal shell 2, the middle parts of the valve body 1 and the metal shell 2 are both open structures, and the valve body sealing shell 5 is clamped on the inner side surfaces of the valve body 1 and the metal shell 2.

[0029] Working principle: the connection and arrangement of the valve body sealing shell 5, the valve body sealing ring 6, the valve plate sealing ring 7, the valve plate 8, the fixed ball head 9, the connecting rod 10, the rotating knob 11, the receiving cylinder 12, the valve shaft 13, the first shaft sleeve 14 and the second shaft sleeve 15 can realize the double-eccentric and double-direction design of the butterfly valve, so that the sealing effect is ensured when facing complex working conditions and media with different flow directions, the sealing surface worn after long-term use can be conveniently replaced, and the sealing performance is improved to a certain extent; the connection and fixation of each component of the metal shell 2, the fixing bolt 3 and the fixing nut 4 can increase the stability of the valve body 1, thereby reducing the possibility of the valve body being distorted caused by external force, and when replacement is needed, the user is provided with convenience for dismounting and mounting.

[0030] The above merely describes a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A double eccentric double direction sealing butterfly valve comprising a valve body (1), characterized in that, The valve body (1) is provided with a detachable bidirectional sealing mechanism and a mounting assembly. The detachable bidirectional sealing mechanism comprises a valve body sealing shell (5), a valve body sealing ring (6), a valve plate sealing ring (7), a valve plate (8), a fixed ball head (9), a connecting rod (10), a rotating knob (11), a receiving cylinder (12), a valve shaft (13), a first shaft sleeve (14) and a second shaft sleeve (15). One side of the outer wall of the valve body sealing ring (6) is tightly connected to the inner side of the outer wall of the valve body sealing shell (5). The valve plate sealing ring (7) is wrapped on the outer wall of the valve plate (8). The fixed ball head (9) is welded to the top of the connecting rod (10). The bottom of the connecting rod (10) is fixedly connected to one side surface of the rotating knob (11). The top outer wall of the valve shaft (13) is screw-connected to the inside of the receiving cylinder (12). The top end of the valve shaft (13) is connected to the bottom surface of the rotating knob (11). The rotating knob (11) is rotationally connected to the top surface of the receiving cylinder (12). The valve shaft (13) is inserted into the eccentric shaft of the valve plate (8).

2. A double eccentric double-direction sealing butterfly valve according to claim 1, characterized in that, The mounting assembly comprises a metal shell (2), a fixed bolt (3) and a fixed nut (4). The fixed bolt (3) is screwed into the inside of the screw hole. One end of the fixed bolt (3) is screw-connected to the fixed nut (4).

3. The double eccentric double-direction sealing butterfly valve according to claim 1, characterized in that, The first shaft sleeve (14) and the second shaft sleeve (15) are respectively sleeved on the outer walls of both ends of the valve shaft (13). The top surface of the first shaft sleeve (14) is welded to the top inner side of the valve body sealing shell (5). The bottom of the second shaft sleeve (15) is fixedly connected to the bottom surface of the valve body sealing shell (5).

4. The double eccentric double-direction sealing butterfly valve according to claim 2, characterized in that, The surfaces of the valve body (1) and the metal shell (2) are both provided with a plurality of screw holes. The valve body (1) and the metal shell (2) are movably connected through the fixed bolt.

5. The double eccentric double-direction sealing butterfly valve according to claim 1, characterized in that, The bottom of the receiving cylinder (12) is clamped to the top surface of the valve body (1) and the metal shell (2).

6. A double eccentric double-direction sealing butterfly valve according to claim 2, characterized in that, The middle parts of the valve body (1) and the metal shell (2) are both open structures. The valve body sealing shell (5) is clamped to the inner surface of the valve body (1) and the metal shell (2).

Images