Rotatable adjusting type eccentric butterfly valve

Abstract

The utility model belongs to the technical field of eccentric butterfly valves, and particularly relates to a rotatable adjusting type eccentric butterfly valve which comprises a main valve body, an auxiliary valve body is installed on the left side of the main valve body, a rotating shaft is rotatably installed between the main valve body and the auxiliary valve body, an auxiliary butterfly plate is fixedly installed on the rotating shaft, and a rotating rod is installed in the main valve body. A main butterfly plate is fixedly installed on the rotating rod, a sliding notch is formed in the main butterfly plate, a main connecting block is installed in the sliding notch in a sliding mode, a limiting rod is hinged to the main connecting block, an auxiliary connecting block is hinged to the other end of the limiting rod, and the auxiliary connecting block is fixedly connected with an auxiliary butterfly plate. When the valve is closed, the main butterfly plate is rotated through the rotating rod, the main connecting block and the auxiliary connecting block are matched with the limiting rod to drive the auxiliary butterfly plate to rotate, and therefore the main butterfly plate and the auxiliary butterfly plate block the valve at the same time, the sealing performance of the valve is greatly improved, and the valve body is easy to disassemble and assemble and low in maintenance difficulty.

Description

TECHNICAL FIELD

[0001] The utility model relates to eccentric butterfly valve technical field, concretely is a rotatable adjustable eccentric butterfly valve. BACKGROUND

[0002] The eccentric butterfly valve is a kind of butterfly valve by eccentric structure design optimization sealing performance and operating characteristics, its core feature is in the valve stem axis deviates from butterfly plate and valve body center, different eccentric design (single eccentric, double eccentric, three eccentric) meet different working condition demand, and it is widely used in industrial field.

[0003] The existing eccentric butterfly valve mostly adopts a group of valve plate to cooperate with the sealing ring in valve body, to realize the sealing of valve body, under some high pressure use conditions, due to the valve plate is in high pressure working condition for a long time, the valve plate and sealing ring can not be completely sealed, and the existing eccentric butterfly valve is mostly difficult to disassemble, and maintenance is more cumbersome, to improve the sealing of valve body, simultaneously reduce the disassembly difficulty of eccentric butterfly valve, we propose a rotatable adjustable eccentric butterfly valve. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of prior art, the utility model provides a rotatable adjustable eccentric butterfly valve, by installing main butterfly plate and vice butterfly plate, when closing valve, by rotating rod to rotate main butterfly plate, main connecting block and vice connecting block are also limited to cooperate with limit rod, to drive vice butterfly plate to also rotate, to let main butterfly plate and vice butterfly plate simultaneously block valve, this greatly increases the sealing of valve, and this valve body is simple to disassemble, and maintenance difficulty is low, solve the problem of background.

[0005] To realize the above object, the utility model is realized by the following technical schemes:

[0006] A rotatable adjustable eccentric butterfly valve, including main valve body, the main valve body left side is installed with vice valve body, the main valve body is rotationally installed with pivot between vice valve body, the pivot is fixedly installed with vice butterfly plate, the vice butterfly plate is fixedly sleeved with vice sealing ring, the main valve body bottom is fixedly connected with installation block, the installation block is rotationally installed with rotating rod, the rotating rod is fixedly installed with main butterfly plate, the main butterfly plate is fixedly sleeved with main sealing ring, the main butterfly plate is equipped with sliding slot, the main connecting block is slidably installed in sliding slot, the main connecting block is hingedly connected with limit rod, the other end of limit rod is hingedly connected with vice connecting block, and vice connecting block is fixedly connected with vice butterfly plate.

[0007] Preferably, two groups of left limit rings and two groups of right limit rings are fixedly installed in the main valve body, the left limit ring and the right limit ring are embedded with sealing ring, the right sealing ring cooperates with the main sealing ring, and the left sealing ring cooperates with the vice sealing ring.

[0008] Preferably, the first connecting flange is integrally arranged on the left side of the main valve body, the second connecting flange is integrally arranged on the right side of the auxiliary valve body, the first connecting flange is fixedly connected with the second connecting flange through a plurality of first bolts and first nuts, the first mounting flange is integrally arranged on the right side of the main valve body, and the second mounting flange is integrally arranged on the left side of the auxiliary valve body.

[0009] Preferably, the main valve body is fixedly connected with a limiting block, the rotating rod is rotatably connected with the limiting block, a plurality of packing rings are sleeved on the rotating rod in the limiting block, a sealing block is fixedly connected with the limiting block through a plurality of second bolts and second nuts, and the sealing block is rotatably connected with the rotating rod.

[0010] Preferably, the limiting block is provided with a sealing shell, a plurality of short columns are fixedly arranged below the sealing shell, the short columns are fixedly connected with the limiting block, a worm gear and a worm are rotatably arranged in the sealing shell, the worm gear and the worm are matched with each other, the worm gear is fixedly connected with the rotating rod, one end of the worm is fixedly connected with a long rod, and the other end of the long rod is fixedly connected with a hand wheel.

[0011] Preferably, the first connecting flange and the second connecting flange are provided with a sealing rubber ring.

[0012] Beneficial effects

[0013] The utility model provides a rotatable adjustment formula eccentric butterfly valve. Compared with prior art has the following beneficial effects:

[0014] 1. The rotatable adjustment formula eccentric butterfly valve, through installing main butterfly plate and auxiliary butterfly plate, when closing the valve, the main butterfly plate is rotated through the rotating rod, the main connecting block and the auxiliary connecting block are matched with each other with the limiting rod, drive the auxiliary butterfly plate to rotate, so that the main butterfly plate and the auxiliary butterfly plate block the valve simultaneously, which greatly increases the sealing property of the valve, and the valve body is simple to disassemble and reassemble, and the maintenance difficulty is low. ACCURACY OF DRAWINGS

[0015] Figure 1 It is the schematic diagram of the main body structure of the utility model;

[0016] Figure 2 It is the explosion view of the main body structure of the utility model;

[0017] Figure 3 It is the internal schematic diagram of the main valve body and the auxiliary valve body of the utility model;

[0018] Figure 4 It is the schematic diagram of the main butterfly plate and the auxiliary butterfly plate of the utility model being opened;

[0019] Figure 5 It is the schematic diagram of the main butterfly plate and the auxiliary butterfly plate of the utility model being opened; Figure 4 ​

[0020] Figure 6 The utility model discloses Figure 4 The enlarged schematic view at B.

[0021] In the figure: 1, main valve body;2, auxiliary valve body;3, second mounting flange;4, second connecting flange;5, first connecting flange;6, first mounting flange;7, auxiliary butterfly plate;8, main butterfly plate;9, rotating rod;10, hand wheel;11, limit block;12, rotating shaft;13, long rod;14, mounting block;15, limit rod;16, auxiliary connecting block;17, main connecting block;18, sliding notch;19, left limit ring;20, right limit ring;21, sealing ring;22, sealing shell;23, sealing block;24, short column;25, filler;26, worm wheel;27, worm. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a rotatable adjustable eccentric butterfly valve, including main valve body 1, auxiliary valve body 2 is installed in the left side of main valve body 1, rotating shaft 12 is rotatably installed between main valve body 1 and auxiliary valve body 2, auxiliary butterfly plate 7 is fixedly installed on rotating shaft 12, auxiliary sealing ring is fixedly sleeved on auxiliary butterfly plate 7, mounting block 14 is fixedly communicated in the bottom of main valve body 1, rotating rod 9 is rotatably installed on mounting block 14, main butterfly plate 8 is fixedly installed on rotating rod 9, main sealing ring is fixedly sleeved on main butterfly plate 8, sliding notch 18 is formed in main butterfly plate 8, main connecting block 17 is slidably installed in sliding notch 18, limit rod 15 is hinged on main connecting block 17, another end of limit rod 15 is hingedly connected with auxiliary connecting block 16, auxiliary connecting block 16 is fixedly connected with auxiliary butterfly plate 7;Two groups of left limit ring 19 and two groups of right limit ring 20 are fixedly installed in main valve body 1, sealing ring 21 is embedded between left limit ring 19 and right limit ring 20, right sealing ring 21 cooperates with main sealing ring, left sealing ring 21 cooperates with auxiliary sealing ring;

[0024] When using, when the valve needs to be closed, under the restriction of the mounting block 14, the main butterfly plate 8 is driven to rotate by the rotating rod 9, under the action of the limiting rod 15 and the cooperation of the sliding slot 18 and the main connecting block 17, the auxiliary connecting block 16 drives the auxiliary butterfly plate 7 to rotate with the main butterfly plate 8, finally the main sealing ring on the main butterfly plate 8 cooperates with the sealing ring 21 on the right side in the main valve body 1 to play a sealing role, the auxiliary sealing ring on the auxiliary butterfly plate 7 cooperates with the sealing ring 21 on the left side in the main valve body 1 to enhance the sealing performance of the valve body, the main butterfly plate 8 and the auxiliary butterfly plate 7 are used to seal the valve body, which greatly enhances the sealing performance of the valve body.

[0025] The first connecting flange 5 is integrally installed on the left side of the main valve body 1, the second connecting flange 4 is integrally installed on the right side of the auxiliary valve body 2, the first connecting flange 5 and the second connecting flange 4 are fixedly connected through a plurality of first bolts and first nuts, the first mounting flange 6 is integrally installed on the right side of the main valve body 1, and the second mounting flange 3 is integrally installed on the left side of the auxiliary valve body 2; a sealing rubber ring is arranged between the first connecting flange 5 and the second connecting flange 4.

[0026] When using, first, the main connecting block 17 on the limiting rod 15 is slidably installed on the sliding slot 18 on the main butterfly plate 8, then the auxiliary connecting block 16 at the other end of the limiting rod 15 is fixedly installed on the auxiliary butterfly plate 7, then the auxiliary butterfly plate 7 is installed on the clamping groove of the main valve body 1, then the auxiliary valve body 2 is installed on the main valve body 1, the clamping groove on the main valve body 1 cooperates with the clamping groove on the auxiliary valve body 2, so that the auxiliary butterfly plate 7 rotates in the clamping groove, finally the first connecting flange 5 and the second connecting flange 4 are fixed by a plurality of first bolts and first nuts; wherein the first mounting flange 6 and the second mounting flange 3 are used to connect pipelines, and the sealing rubber ring between the first connecting flange 5 and the second connecting flange 4 can be used to improve the airtightness between the main valve body 1 and the auxiliary valve body 2.

[0027] The limiting block 11 is fixedly connected in communication on the main valve body 1, the rotating rod 9 is rotatably connected with the limiting block 11, a plurality of fillers 25 are sleeved on the rotating rod 9 in the limiting block 11, the sealing block 23 is fixedly connected with the limiting block 11 through a plurality of second bolts and second nuts, and the sealing block 23 is rotatably connected with the rotating rod 9; the sealing shell 22 is arranged above the limiting block 11, a plurality of short columns 24 are fixedly installed below the sealing shell 22, the short columns 24 are fixedly connected with the limiting block 11, the worm wheel 26 and the worm 27 are rotatably installed in the sealing shell 22, the worm wheel 26 cooperates with the worm 27, the worm wheel 26 is fixedly connected with the rotating rod 9, one end of the worm 27 is fixedly connected with the long rod 13, and the other end of the long rod 13 is fixedly installed with the hand wheel 10;

[0028] In use, the long rod 13 is rotated by the hand wheel 10, under the action of the sealing shell 22, the worm 27 drives the worm gear 26 to rotate, and then the worm gear 26 drives the rotating rod 9 to start rotating; wherein the packing 25 is used to improve the sealing between the limiting block 11 and the main valve body 1, and the sealing block 23 is used to improve the sealing between the limiting block 11 and the rotating rod 9.

[0029] Working principle: first, the main connecting block 17 on the limiting rod 15 is slidably installed on the sliding slot 18 on the main butterfly plate 8, then the auxiliary connecting block 16 at the other end of the limiting rod 15 is fixedly installed on the auxiliary butterfly plate 7, then the auxiliary butterfly plate 7 is installed on the clamping groove of the main valve body 1, then the auxiliary valve body 2 is installed on the main valve body 1, the clamping groove on the main valve body 1 cooperates with the clamping groove on the auxiliary valve body 2, so that the auxiliary butterfly plate 7 rotates in the clamping groove, and finally a plurality of first bolts and first nuts are used to fix the first connecting flange 5 and the second connecting flange 4; wherein the first mounting flange 6 and the second mounting flange 3 are used to connect the pipeline, and the sealing rubber ring between the first connecting flange 5 and the second connecting flange 4 can be used to improve the sealing between the main valve body 1 and the auxiliary valve body 2;

[0030] The long rod 13 is rotated by the hand wheel 10, under the action of the sealing shell 22, the worm 27 drives the worm gear 26 to rotate, and then the worm gear 26 drives the rotating rod 9 to start rotating, so as to drive the main butterfly plate 8 to rotate; wherein the packing 25 is used to improve the sealing between the limiting block 11 and the main valve body 1, and the sealing block 23 is used to improve the sealing between the limiting block 11 and the rotating rod 9.

[0031] When it is necessary to close the valve, under the limitation of the mounting block 14, the rotating rod 9 drives the main butterfly plate 8 to rotate, under the action of the limiting rod 15 and the cooperation of the sliding slot 18 and the main connecting block 17, the auxiliary connecting block 16 drives the auxiliary butterfly plate 7 to rotate with the main butterfly plate 8, finally the main sealing ring on the main butterfly plate 8 cooperates with the sealing ring 21 on the right side in the main valve body 1 to play a sealing role, and the auxiliary sealing ring on the auxiliary butterfly plate 7 cooperates with the sealing ring 21 on the left side in the main valve body 1 to strengthen the sealing of the valve body, and the main butterfly plate 8 and the auxiliary butterfly plate 7 are used to seal the valve body, which greatly improves the sealing of the valve body.

[0032] It should be noted that in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a list of elements does not only include those elements, but also includes other elements not explicitly listed, or inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotatable adjustment eccentric butterfly valve comprising a main valve body (1), characterized in that: The left side of the main valve body (1) is provided with a vice valve body (2), the main valve body (1) and the vice valve body (2) are rotatably connected with a rotating shaft (12), the rotating shaft (12) is fixedly connected with a vice butterfly plate (7), the vice butterfly plate (7) is fixedly connected with a vice sealing ring, the bottom of the main valve body (1) is fixedly connected with a mounting block (14), the mounting block (14) is rotatably connected with a rotating rod (9), the rotating rod (9) is fixedly connected with a main butterfly plate (8), the main butterfly plate (8) is fixedly connected with a main sealing ring, the main butterfly plate (8) is provided with a sliding slot (18), the sliding slot (18) is slidably connected with a main connecting block (17), the main connecting block (17) is hingedly connected with a limiting rod (15), the other end of the limiting rod (15) is hingedly connected with a vice connecting block (16), and the vice connecting block (16) is fixedly connected with the vice butterfly plate (7).

2. A rotatable adjustment eccentric butterfly valve according to claim 1, wherein: The main valve body (1) is fixedly connected with two groups of left limiting rings (19) and two groups of right limiting rings (20), and the left limiting ring (19) and the right limiting ring (20) are embedded with a sealing ring (21). The right sealing ring (21) is matched with the main sealing ring, and the left sealing ring (21) is matched with the vice sealing ring.

3. A rotatable adjustment eccentric butterfly valve as defined in claim 1, wherein: The left side of the main valve body (1) is integrally connected with a first connecting flange (5), the right side of the vice valve body (2) is integrally connected with a second connecting flange (4), the first connecting flange (5) and the second connecting flange (4) are fixedly connected through a plurality of first bolts and first nuts, the right side of the main valve body (1) is integrally connected with a first mounting flange (6), and the left side of the vice valve body (2) is integrally connected with a second mounting flange (3).

4. A rotatable-adjustable eccentric butterfly valve according to claim 1, wherein: The main valve body (1) is fixedly connected with a limiting block (11), the rotating rod (9) is rotatably connected with the limiting block (11), a plurality of fillers (25) are sleeved on the rotating rod (9) in the limiting block (11), and the limiting block (11) is fixedly connected with a sealing block (23) through a plurality of second bolts and second nuts.

5. A rotatable adjustment eccentric butterfly valve according to claim 4, wherein: The upper side of the limiting block (11) is provided with a sealing shell (22), a plurality of short columns (24) are fixedly connected with the limiting block (11) and arranged on the lower side of the sealing shell (22), a worm wheel (26) and a worm (27) are rotatably arranged in the sealing shell (22), the worm wheel (26) and the worm (27) are matched with each other, the worm wheel (26) is fixedly connected with the rotating rod (9), one end of the worm (27) is fixedly connected with a long rod (13), and the other end of the long rod (13) is fixedly connected with a hand wheel (10).

6. A rotatable adjustment eccentric butterfly valve as defined in claim 3, wherein: The first connecting flange (5) and the second connecting flange (4) are provided with a sealing rubber ring.

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