Shaft seal structure of butterfly valve

Abstract

The utility model discloses a shaft seal structure of a butterfly valve, which comprises a water valve, the inside of the water valve is movably connected with a connecting column, the outer side of the connecting column is fixedly connected with a valve, the inner side of the water valve is fixedly connected with a shaft seal connecting plate, and the top of the water valve is fixedly connected with a fixing block. By arranging the cross block and the first connecting groove, the cross block at the bottom of the first connecting rod can be conveniently inserted into the first connecting groove, the valve can be driven to rotate through the first connecting rod, the valve can be conveniently adjusted to be closed, by arranging the second connecting rod and the groove, the valve can be connected with the connecting block, and the connecting column can be conveniently positioned from the bottom; by arranging the first bolt and the second bolt, the first connecting rod can be driven to be separated from the connecting column by rotating the first bolt, the first connecting rod can be conveniently pulled out of the first connecting groove, the second bolt can be connected with the connecting block, the second connecting rod can be conveniently disassembled and assembled, the connecting column can be conveniently taken out of the water valve, and the valve can be conveniently replaced, disassembled and assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a shaft sealing structure of a butterfly valve. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve shaft to achieve opening and closing. The existing grooves and rubber rings are generally fixedly installed in the valve body. The valve is not easy to disassemble and repair, and it is not easy to enter the valve body for repair after damage; at the same time, it is not easy to enter the valve body for replacement after the rubber ring is aged. Utility Model Content

[0003] In order to solve the problems raised in the above background technology, the purpose of the utility model is to provide a shaft sealing structure of a butterfly valve, which has the advantage that the valve body is easy to disassemble, assemble and maintain.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shaft sealing structure of a butterfly valve, comprising a water valve, wherein a connecting column is movably connected inside the water valve, a valve is fixedly connected to the outside of the connecting column, a shaft sealing connecting plate is fixedly connected to the inside of the water valve, a fixing block is fixedly connected to the top of the water valve, a first through-hole is provided inside the water valve and the fixing block, a first connecting rod is movably connected inside the fixing block, a cross block is fixedly connected to the bottom of the first connecting rod, a first connecting groove is provided on the top of the connecting column, the first connecting groove is movably connected to the cross block, and the inside of the first connecting rod The bottom of the water valve is provided with a second opening, the interior of the second opening is fixedly connected with a connecting block, the interior of the second opening is movably connected with a sealing plate located at the bottom of the connecting block, the top of the sealing plate is fixedly connected with a second connecting rod, the second connecting rod is movably connected with the second connecting groove, the interior of the second connecting rod is provided with a groove, the groove is movably connected with the connecting block, the interior of the sealing plate is movably connected with a second bolt, and the second bolt is threadedly connected to the connecting block.

[0005] As a preferred embodiment of the utility model, a sliding groove is provided on the outer side of the first connecting rod, a connecting ring is fixedly connected to the outer side of the first connecting rod, a sliding block is fixedly connected to the inner side of the connecting ring, and the sliding block is movably connected to the sliding groove.

[0006] As a preferred embodiment of the present invention, a first limiting block is fixedly connected to the bottom of the connecting ring, and a first limiting groove is formed on the top of the fixing block.

[0007] As a preferred embodiment of the utility model, the bottom of the water valve is fixedly connected to a limit ring, the limit ring is movably connected to the sealing plate, the top of the first bolt is fixedly connected to a first handle, the bottom of the second bolt is fixedly connected to a second handle, and the second handle is movably connected to the sealing plate.

[0008] As a preferred embodiment of the utility model, a shaft sealing plate is fixedly connected to the outer side of the valve by bolts, and a first sealing strip is fixedly connected to the outer side of the valve by bolts.

[0009] As a preferred embodiment of the present invention, a reinforcing plate is fixedly connected to the outer side of the valve, and a flow guide cutout is opened on the outer side of the reinforcing plate.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model provides a cross block and a first connecting groove, so that the cross block at the bottom of the first connecting rod is conveniently inserted into the first connecting groove. The valve can be driven to rotate through the first connecting rod, so that the valve can be adjusted to close. The second connecting rod and the groove can be connected to the connecting block, so that the connecting column can be positioned from the bottom. The first bolt and the second bolt can be provided, and the first connecting rod can be driven to separate from the connecting column by rotating the first bolt, so that the first connecting rod can be pulled out of the first connecting groove. The second bolt can be connected to the connecting block, so that the second connecting rod can be disassembled and assembled, and the connecting column can be taken out of the water valve, so that the valve can be replaced and disassembled.

[0012] 2. The utility model provides a slider and a slide groove so that the connecting ring can move outside the first connecting rod, which facilitates the rotation and movement of the first connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic side view of the valve body of the utility model;

[0015] Figure 3 This is a schematic diagram of the first connecting rod of the structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the bottom of the valve body structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the interior of the valve body of the utility model;

[0018] Figure 6 It is a schematic diagram of the top of the structural sealing plate of the utility model.

[0019] In the figure: 1. water valve; 2. connecting column; 3. valve; 4. shaft seal connecting plate; 5. fixing block; 6. first opening; 7. first connecting rod; 8. cross block; 9. first connecting groove; 10. first bolt; 11. second connecting groove; 12. second opening; 13. connecting block; 14. sealing plate; 15. second connecting rod; 16. groove; 17. second bolt; 18. slide groove; 19. connecting ring; 20. slider; 21. first limit block; 22. first limit groove; 23. limit ring; 24. first handle; 25. second handle; 26. shaft seal plate; 27. first sealing strip; 28. reinforcement plate; 29. ​​guide cut. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 6 As shown, a shaft sealing structure of a butterfly valve comprises a water valve 1, wherein a connecting column 2 is movably connected inside the water valve 1, a valve 3 is fixedly connected to the outside of the connecting column 2, a shaft sealing connecting plate 4 is fixedly connected to the inside of the water valve 1, a fixing block 5 is fixedly connected to the top of the water valve 1, a first through-port 6 is provided inside the water valve 1 and the fixing block 5, a first connecting rod 7 is movably connected inside the fixing block 5, a cross block 8 is fixedly connected to the bottom of the first connecting rod 7, a first connecting groove 9 is provided on the top of the connecting column 2, the first connecting groove 9 is movably connected to the cross block 8, a first bolt 10 is threadedly connected to the inside of the first connecting rod 7, and the first bolt 10 is threadedly connected to the cross block 8. The first connecting groove 9 is threadedly connected, a second connecting groove 11 is provided at the bottom of the connecting column 2, a second opening 12 is provided at the bottom of the water valve 1, a connecting block 13 is fixedly connected inside the second opening 12, a sealing plate 14 located at the bottom of the connecting block 13 is movably connected inside the second opening 12, a second connecting rod 15 is fixedly connected to the top of the sealing plate 14, the second connecting rod 15 is movably connected to the second connecting groove 11, a groove 16 is provided inside the second connecting rod 15, the groove 16 is movably connected to the connecting block 13, a second bolt 17 is movably connected inside the sealing plate 14, and the second bolt 17 is threadedly connected to the connecting block 13.

[0022] refer to Figures 1 to 6 A slide groove 18 is provided on the outer side of the first connecting rod 7 , a connecting ring 19 is fixedly connected to the outer side of the first connecting rod 7 , a slider 20 is fixedly connected to the inner side of the connecting ring 19 , and the slider 20 is movably connected to the slide groove 18 .

[0023] As a technical optimization solution of the present invention, by providing the slider 20 and the slide groove 18 , the connecting ring 19 can move outside the first connecting rod 7 , so as to facilitate the rotation and movement of the first connecting rod 7 .

[0024] refer to Figures 1 to 6 A first limiting block 21 is fixedly connected to the bottom of the connecting ring 19 , and a first limiting groove 22 is opened on the top of the fixing block 5 .

[0025] As a technical optimization solution of the utility model, by setting the first limit block 21 and the first limit groove 22, the first limit block 21 can be inserted into the first limit groove 22 to fix the connecting ring 19, which is convenient for controlling the switch state of the valve 3.

[0026] refer to Figures 1 to 6 The bottom of the water valve 1 is fixedly connected to a limit ring 23, the limit ring 23 is movably connected to the sealing plate 14, the top of the first bolt 10 is fixedly connected to a first handle 24, the bottom of the second bolt 17 is fixedly connected to a second handle 25, and the second handle 25 is movably connected to the sealing plate 14.

[0027] As a technical optimization solution of the utility model, by setting a limit ring 23, the outer side of the sealing plate 14 can be sealed to prevent water leakage from the second opening 12. By setting a first handle 24 and a second handle 25, it is easy to rotate the first bolt 10 and the second bolt 17.

[0028] refer to Figures 1 to 6 The outer side of the valve 3 is fixedly connected with a shaft sealing plate 26 by bolts, and the outer side of the valve 3 is fixedly connected with a first sealing strip 27 by bolts.

[0029] As a technical optimization solution of the utility model, by providing the shaft sealing plate 26 and the first sealing strip 27, the sealing degree of the valve 3 can be increased, and the first sealing strip 27 can be replaced by taking out the valve 3.

[0030] refer to Figures 1 to 6 A reinforcing plate 28 is fixedly connected to the outer side of the valve 3 , and a flow guide cutout 29 is opened on the outer side of the reinforcing plate 28 .

[0031] As a technical optimization solution of the utility model, by providing a reinforcing plate 28 and a guide cutout 29 , the reinforcing plate 28 can increase the strength of the valve 3 , and the guide cutout 29 makes it easier for water to pass through the reinforcing plate 28 .

[0032] The working principle and use process of the utility model are as follows: the connecting ring 19 is rotated, the first connecting rod 7 is driven to rotate through the connecting ring 19, the cross block 8 is driven to rotate through the first connecting rod 7, the cross block 8 drives the connecting column 2 to rotate through the first connecting groove 9, the valve 3 is driven to rotate through the connecting column 2, and the first sealing strip 27 and the shaft sealing plate 26 are driven to rotate through the valve 3. When the valve 3 is separated from the shaft sealing connecting plate 4 inside the water valve 1, the water flow can pass through the valve 3, move the connecting ring 19 downward, drive the first limit block 21 to move through the connecting ring 19, insert the first limit block 21 into the corresponding first limit groove 22, and fix the angle of the connecting ring 19. , so that the valve 3 is fixed, the first handle 24 is turned, and the first bolt 10 is driven to rotate through the first handle 24, and the first bolt 10 is separated from the first connecting groove 9. The connecting ring 19 can be pulled up to drive the first connecting rod 7 to move, so that it drives the cross block 8 to separate from the first connecting groove 9, and the second handle 25 is turned, and the second bolt 17 is driven by the second handle 25 to separate from the connecting block 13. At this time, the sealing plate 14 can be taken out of the second opening 12, so that it drives the second connecting rod 15 to separate from the second connecting groove 11. At this time, the connecting column 2 can be taken out of the water valve 1, and the cross bolts in the first sealing strip 27 can be turned to separate the first sealing strip 27 from the moisture.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve shaft seal structure, comprising a water valve (1), characterized in that: The water valve (1) is movably connected to a connecting column (2) inside, a valve (3) is fixedly connected to the outside of the connecting column (2), a shaft seal connecting plate (4) is fixedly connected to the inside of the water valve (1), a fixing block (5) is fixedly connected to the top of the water valve (1), a first opening (6) is provided inside the water valve (1) and the fixing block (5), a first connecting rod (7) is movably connected inside the fixing block (5), a cross block (8) is fixedly connected to the bottom of the first connecting rod (7), a first connecting groove (9) is provided on the top of the connecting column (2), the first connecting groove (9) is movably connected to the cross block (8), a first bolt (10) is threadedly connected to the inside of the first connecting rod (7), the first bolt (10) is threadedly connected to the first connecting groove (9), and the first bolt (10) is threadedly connected to the first connecting groove (9). The water valve (1) is connected by a thread, a second connecting groove (11) is provided at the bottom of the connecting column (2), a second opening (12) is provided at the bottom of the water valve (1), a connecting block (13) is fixedly connected inside the second opening (12), a sealing plate (14) located at the bottom of the connecting block (13) is movably connected inside the second opening (12), a second connecting rod (15) is fixedly connected at the top of the sealing plate (14), the second connecting rod (15) is movably connected to the second connecting groove (11), a groove (16) is provided inside the second connecting rod (15), the groove (16) is movably connected to the connecting block (13), a second bolt (17) is movably connected to the connecting block (13) inside the sealing plate (14), and the second bolt (17) is threadedly connected to the connecting block (13).

2. A butterfly valve shaft seal structure according to claim 1, characterized in that: A sliding groove (18) is provided on the outer side of the first connecting rod (7), a connecting ring (19) is fixedly connected to the outer side of the first connecting rod (7), a sliding block (20) is fixedly connected to the inner side of the connecting ring (19), and the sliding block (20) is movably connected to the sliding groove (18).

3. A butterfly valve shaft seal structure according to claim 2, characterized in that: A first limiting block (21) is fixedly connected to the bottom of the connecting ring (19), and a first limiting groove (22) is formed on the top of the fixing block (5).

4. The shaft seal structure of a butterfly valve according to claim 1, characterized in that: The bottom of the water valve (1) is fixedly connected to a limit ring (23), and the limit ring (23) is movably connected to the sealing plate (14); the top of the first bolt (10) is fixedly connected to a first handle (24), and the bottom of the second bolt (17) is fixedly connected to a second handle (25), and the second handle (25) is movably connected to the sealing plate (14).

5. The shaft seal structure of a butterfly valve according to claim 1, characterized in that: The outer side of the valve (3) is fixedly connected to a shaft sealing plate (26) by means of bolts, and the outer side of the valve (3) is fixedly connected to a first sealing strip (27) by means of bolts.

6. The butterfly valve shaft seal structure according to claim 1, characterized in that: A reinforcing plate (28) is fixedly connected to the outer side of the valve (3), and a flow guide notch (29) is provided on the outer side of the reinforcing plate (28).

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