Corrosion-resistant three-eccentric center butterfly valve

Abstract

The utility model discloses a corrosion-resistant three-eccentric center butterfly valve which comprises a valve body, a damping rotating groove is formed in the top end of the valve body, a rotating rod is arranged in the damping rotating groove, a damping rotating seat is fixedly arranged on the outer side of the rotating rod in a sleeved mode, the damping rotating seat is connected into the damping rotating groove in a rotating mode, a hexagonal inserting rod is fixedly installed at the bottom end of the rotating rod, and a butterfly plate is arranged in the valve body. A connecting base is fixedly installed on the left side of the butterfly plate, and the hexagonal inserting rod penetrates through the connecting base. According to the corrosion-resistant three-eccentric center butterfly valve, the rotating rod, the hexagonal inserting rod, the butterfly plate, the connecting base and the valve body can be quickly disassembled and assembled, accessories can be independently replaced according to damage conditions, resource waste caused by replacement of the whole valve is avoided, meanwhile, the rotated mounting base can be locked and fixed in the daily use process, and the service life of the butterfly valve is prolonged. The situation that the opening and closing degree of the valve is affected due to rotation of the mounting base when the mounting base is collided by external force is avoided, the corrosion resistance of the interior and exterior of the valve can be improved through the titanium alloy inner pipe and epoxy paint, and therefore the service life of the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely is a kind of corrosion-resistant three eccentric butterfly valve. BACKGROUND

[0002] Three eccentric butterfly valve is a kind of special valve design, its valve rod axle is simultaneously deviated from disc center and body center, and valve seat rotation axis and valve body passage axis have certain angle, it is mainly used on metallurgy, electric power, petroleum chemical industry, water supply and drainage and municipal construction etc.

[0003] Search patent application No. CN202020913506.2 discloses a kind of novel three eccentric butterfly valve, it includes: valve pipe, fixed block, connecting shaft, handle, butterfly plate and annular plate, the bottom end both sides of the valve pipe are fixedly installed with lock catch, the top of the valve pipe is fixedly installed the fixed block, the fixed block is fixedly installed the connecting shaft, the top of the connecting shaft is fixedly installed the handle, the bottom end of the connecting shaft is fixedly connected the butterfly plate of the valve pipe, the notch of the top of the one side of the valve pipe is fixedly installed the annular plate, the bottom end of the annular plate is fixedly installed with filter screen, the bottom end of the filter screen is fixedly installed with fixed frame.The novel three eccentric butterfly valve, not only can filter impurity in conveying process, avoid jam, and cleaning is simple, save time and labor.

[0004] However, the patent still has deficiencies, the valve body in this three eccentric butterfly valve is of one-piece structure, valve rod and butterfly plate and other components are arranged in the interior of valve body, so valve rod and butterfly plate and other components and valve body cannot be disassembled, when subsequent valve fails, only entire valve can be replaced, resource waste is easy to cause, and locking structure is lacked on handle in this valve, when handle is collided by external force in daily use, handle is easy to drive valve rod and butterfly plate to rotate, make valve close or change the opening and closing degree of valve, thereby influence the conveying of medium in pipeline.

[0005] Therefore, we propose a kind of corrosion-resistant three eccentric butterfly valve. Utility model content

[0006] The utility model aims at providing a kind of corrosion-resistant three eccentric butterfly valve to solve the problems raised in the above background.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a kind of corrosion-resistant three eccentric butterfly valve, the top of the valve body is provided with damping rotation groove, the damping rotation groove is provided with rotating rod, the outside of the rotating rod is fixedly sleeved with damping rotation seat, the damping rotation seat is rotatably connected in damping rotation groove, the bottom of the rotating rod is fixedly installed with hexagonal plug rod, the valve body is provided with butterfly plate, the left side of the butterfly plate is fixedly installed with connecting seat, the hexagonal plug rod penetrates connecting seat, the upper portion of the rotating rod outside in damping rotation seat is rotatably sleeved with U-shaped seat, the left side of the valve body is fixedly installed with mounting bracket, the mounting bracket is rotatably connected with two-way screw rod, two-way screw rod is threadedly sleeved with two sliding blocks, the top of two sliding blocks is fixedly installed with L-shaped fixing frame, two L-shaped fixing frames are fixedly installed with multiple rods on the side close to each other, the two sides of U-shaped seat are provided with perforation corresponding multiple rods, the side of multiple rods away from L-shaped fixing frame is respectively inserted in corresponding perforation, the top of U-shaped seat outside rotating rod is fixedly sleeved with positioning ring, the top of the rotating rod is fixedly installed with mounting seat, the mounting seat is slidably connected with sliding seat, the front end of the sliding seat is fixedly installed with connecting rod, the front end of the connecting rod extends out of mounting seat and is fixedly installed with pull plate, the bottom rear of the pull plate is fixedly installed with clamping block, the outside of the positioning ring is provided with multiple clamping grooves, the clamping block is clamped in clamping groove, the outside of the connecting rod is sleeved with spring.

[0008] Optionally, the top of the valve body is provided with positioning groove on both sides of the rotating rod, and the two output ends of the U-shaped seat are respectively inserted into the corresponding positioning grooves, so that the U-shaped seat can be limited by the positioning grooves.

[0009] Optionally, one side of the spring is fixedly installed on the sliding seat, and the side of the spring away from the sliding seat is fixedly installed on the inner wall of the mounting seat, which facilitates the use of the device.

[0010] Optionally, the two-way screw rod is provided with two opposite threads, and the two sliding blocks are respectively sleeved on the two threads, which facilitates the use of the device.

[0011] Optionally, flange pipes are fixedly installed on both sides of the valve body, which facilitates the connection of the valve with the pipeline.

[0012] Optionally, titanium alloy inner tubes are fixedly installed on the inner walls of the valve body and the two flange pipes, and the outer sides of the valve body and the two flange pipes are coated with epoxy paint, which can improve the corrosion resistance of the valve.

[0013] Optionally, a sealing ring is slidably sleeved on the lower part of the rotating rod below the damping rotation seat, and a sealing sleeve is fixedly sleeved on the outside of the butterfly plate, which can improve the sealing performance of the assembled valve.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] Through the mutual cooperation of the damping rotating groove, the damping rotating seat, the rotating rod, the hexagonal inserting rod, the butterfly plate, the titanium alloy inner tube, the connecting seat, the positioning ring, the bidirectional screw rod, the sliding block, the L-shaped fixing frame, the mounting seat, the spring, the connecting rod, the pull plate, the clamping block, the penetrating rod and the U-shaped seat, the rotating rod, the hexagonal inserting rod, the butterfly plate and the connecting seat can be quickly disassembled from the valve body, the accessories can be individually replaced according to the damage condition, the waste of resources caused by the replacement of the whole valve can be avoided, the mounting seat can be locked and fixed during daily use, the rotation of the mounting seat caused by external force impact is avoided, the opening and closing degree of the valve is affected, the corrosion resistance of the valve inside and outside can be improved through the titanium alloy inner tube and the epoxy paint, and therefore the service life of the equipment is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the corrosion-resistant three-eccentric butterfly valve;

[0017] Figure 2 It is a sectional view of the corrosion-resistant three-eccentric butterfly valve;

[0018] Figure 3 It is a sectional view of the mounting frame in the corrosion-resistant three-eccentric butterfly valve;

[0019] Figure 4 It is a sectional view of the mounting seat in the corrosion-resistant three-eccentric butterfly valve;

[0020] Figure 5 It is a sectional view of the perforation in the corrosion-resistant three-eccentric butterfly valve;

[0021] Figure 6 It is a structure schematic view of the rotating rod in the corrosion-resistant three-eccentric butterfly valve.

[0022] In the drawing: 1, valve body; 2, flange pipe; 3, damping rotating groove; 4, damping rotating seat; 5, sealing ring; 6, rotating rod; 7, hexagonal inserting rod; 8, butterfly plate; 9, titanium alloy inner tube; 10, connecting seat; 11, positioning ring; 12, sealing sleeve; 13, mounting frame; 14, bidirectional screw rod; 15, sliding block; 16, L-shaped fixing frame; 17, mounting seat; 18, sliding seat; 19, spring; 20, connecting rod; 21, pull plate; 22, clamping block; 23, clamping groove; 24, penetrating rod; 25, perforation; 26, positioning groove; 27, U-shaped seat. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0024] Please refer to Figures 1 to 6 The utility model provides a kind of corrosion-resistant three eccentric butterfly valve, including valve body 1, the top of valve body 1 is provided with damping rotation groove 3, damping rotation groove 3 is provided with rotating rod 6, rotating rod 6 is fixed with the damping rotation seat 4 of outside set, damping rotation seat 4 is rotationally connected in damping rotation groove 3, the bottom of rotating rod 6 is fixedly installed with hexagonal plug rod 7, butterfly plate 8 is provided in valve body 1, the left side of butterfly plate 8 is fixedly installed with connecting seat 10, hexagonal plug rod 7 penetrates in connecting seat 10, rotating rod 6 outside is rotationally set with U type seat 27 in the upper portion of damping rotation seat 4, the left side of valve body 1 is fixedly installed with mounting bracket 13, two-way screw rod 14 is rotationally connected in mounting bracket 13, two-way screw rod 14 is threadedly set with two sliding blocks 15, the top of two sliding blocks 15 is fixedly installed with L type fixing frame 16, two L type fixing frames 16 are fixedly installed with multiple through rods 24 on mutually close side, both sides of U type seat 27 are provided with perforation 25 corresponding multiple through rods 24, multiple through rods 24 are respectively inserted in corresponding perforation 25 on the side away from L type fixing frame 16, U type seat 27 top is fixedly set with positioning ring 11 on the outside of rotating rod 6, the top of rotating rod 6 is fixedly installed with mounting seat 17, sliding seat 18 is slidably connected in mounting seat 17, the front end of sliding seat 18 is fixedly installed with connecting rod 20, the front end of connecting rod 20 extends out of mounting seat 17 and is fixedly installed with pull plate 21, the bottom rear of pull plate 21 is fixedly installed with clamping block 22, the outside of positioning ring 11 is provided with multiple clamping grooves 23, clamping block 22 is clamped in clamping groove 23, spring 19 is set on the outside of connecting rod 20.

[0025] The top end of the valve body 1 is provided with positioning grooves 26 on both sides of the rotating rod 6, the two output ends of the U-shaped seat 27 are respectively inserted into the corresponding positioning grooves 26, the U-shaped seat 27 is limited by the positioning grooves 26, one side of the spring 19 is fixedly installed on the sliding seat 18, the side of the spring 19 away from the sliding seat 18 is fixedly installed on the inner wall of the mounting seat 17, and the spring 19 is beneficial to the use of the equipment. The two-way screw rod 14 is provided with two opposite threads, and the two sliding blocks 15 are respectively sleeved on the two threads, which is beneficial to the use of the equipment. The two flange pipes 2 are fixedly installed on both sides of the valve body 1, the flange pipes 2 are convenient for connecting the valve with a pipeline, the titanium alloy inner pipes 9 are fixedly installed on the inner walls of the valve body 1 and the two flange pipes 2, and the outer sides of the valve body 1 and the two flange pipes 2 are epoxy painted. The titanium alloy inner pipes 9 and the epoxy paint can improve the corrosion resistance of the valve inside and outside. The sealing ring 5 is slidingly sleeved on the lower part of the damping rotating seat 4 on the rotating rod 6, and the sealing sleeve 12 is fixedly sleeved on the outer side of the butterfly plate 8. The sealing ring 5 and the sealing sleeve 12 can improve the sealing performance of the assembled valve.

[0026] Working principle: the bottom end of the hexagonal inserting rod 7 is provided with a circular shape, and the bottom end of the hexagonal inserting rod 7 is rotationally connected in the inner wall of the bottom end of the valve body 1, the rear end of the bidirectional screw rod 14 extends out of the mounting frame 13 and is fixedly installed with a screw handle, the screw handle is convenient for driving the bidirectional screw rod 14 to rotate, in use, the pull plate 21 can be pulled forward, so that the clamping block 22 is separated from the clamping groove 23, at this time, the mounting seat 17 and the rotating rod 6 lose the limiting, the rotating rod 6 and the hexagonal inserting rod 7 can be driven to rotate through the mounting seat 17, the connecting seat 10 and the butterfly plate 8 are driven to rotate by the hexagonal inserting rod 7, that is, the valve can be opened, then the pull plate 21 is loosened, at this time, the spring 19 drives the sliding seat 18 to reset, so that the pull plate 21 slides to the side of the mounting seat 17, the clamping block 22 is clamped into the corresponding clamping groove 23, that is, the mounting seat 17 can be fixed and limited again, when the valve fails and the internal components need to be repaired, the bidirectional screw rod 14 can be driven to rotate counterclockwise through the screw handle, so that the two sliding blocks 15 drive the two L-shaped fixing frames 16 to slide away from each other, the plurality of penetrating rods 24 extend out of the penetrating holes 25, at this time, the U-shaped seat 27 loses the limiting, the rotating rod 6 is pulled upward through the mounting seat 17, so that the two output ends of the U-shaped seat 27 extend out of the positioning groove 26, until the damping rotating seat 4 and the hexagonal inserting rod 7 completely extend out of the valve body 1, the rotating rod 6 can be removed, then the hexagonal inserting rod 7 is inserted into the opening of the right side flange pipe 2 of the valve body 1, the butterfly plate 8 is ejected out of the valve body 1, the butterfly plate 8 can be taken out to replace and repair the internal components, the corrosion-resistant three-eccentric butterfly valve is convenient to use, the rotating rod 6, the hexagonal inserting rod 7, the butterfly plate 8 and the connecting seat 10 can be quickly disassembled from the valve body 1 through the above-mentioned components, the accessories can be individually replaced according to the damage condition, the waste of resources caused by the need to replace the entire valve is avoided, the mounting seat 17 can be locked and fixed during daily use, the rotating of the mounting seat 17 caused by external force collision is avoided, the opening and closing degree of the valve is affected, the corrosion resistance of the inside and outside of the valve can be improved through the titanium alloy inner pipe 9 and the epoxy paint, so as to prolong the service life of the equipment.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A corrosion resistant triple offset butterfly valve characterized by, Including the valve body (1), the top end of the valve body (1) is provided with a damping rotation groove (3), the damping rotation groove (3) is provided with a rotating rod (6), the outer side of the rotating rod (6) is fixedly sleeved with a damping rotation seat (4), the damping rotation seat (4) is rotatably connected in the damping rotation groove (3), the bottom end of the rotating rod (6) is fixedly installed with a hexagonal plug rod (7), the valve body (1) is provided with a butterfly plate (8), the left side of the butterfly plate (8) is fixedly installed with a connecting seat (10), the hexagonal plug rod (7) penetrates the connecting seat (10), the outer side of the rotating rod (6) is rotatably sleeved with a U-shaped seat (27) on the upper part of the damping rotation seat (4), the left side of the valve body (1) is fixedly installed with a mounting frame (13), the mounting frame (13) is rotatably connected with a bidirectional screw rod (14), the bidirectional screw rod (14) is threadedly sleeved with two sliding blocks (15), the top end of the two sliding blocks (15) is fixedly installed with an L-shaped fixing frame (16), the two L-shaped fixing frames (16) are fixedly installed with a plurality of penetrating rods (24) on the side close to each other, the two sides of the U-shaped seat (27) are provided with penetrating holes (25) corresponding to the plurality of penetrating rods (24), the side away from the L-shaped fixing frame (16) of the plurality of penetrating rods (24) is respectively inserted into the corresponding penetrating hole (25), the top end of the U-shaped seat (27) is fixedly sleeved with a positioning ring (11) on the outer side of the rotating rod (6), the top end of the rotating rod (6) is fixedly installed with a mounting seat (17), the mounting seat (17) is slidably connected with a sliding seat (18), the front end of the sliding seat (18) is fixedly installed with a connecting rod (20), the front end of the connecting rod (20) extends out of the mounting seat (17) and is fixedly installed with a pull plate (21), the bottom end of the pull plate (21) is fixedly installed with a clamping block (22), the outer side of the positioning ring (11) is provided with a plurality of clamping grooves (23), the clamping block (22) is clamped in the clamping groove (23), and the outer side of the connecting rod (20) is sleeved with a spring (19).

2. The corrosion resistant triple offset butterfly valve according to claim 1, wherein, The top end of the valve body (1) is provided with a positioning groove (26) on the two sides of the rotating rod (6), and the two output ends of the U-shaped seat (27) are respectively inserted into the corresponding positioning grooves (26).

3. The corrosion resistant triple offset butterfly valve according to claim 1, wherein, One side of the spring (19) is fixedly installed on the sliding seat (18), and the side away from the sliding seat (18) of the spring (19) is fixedly installed on the inner wall of the mounting seat (17).

4. The corrosion resistant triple offset butterfly valve according to claim 1, wherein, The bidirectional screw rod (14) is provided with two opposite threads, and the two sliding blocks (15) are sleeved on the two threads respectively.

5. The corrosion resistant triple offset butterfly valve according to claim 1, wherein, The two sides of the valve body (1) are fixedly installed with flange pipes (2).

6. A corrosion resistant triple offset butterfly valve according to claim 5, wherein, Titanium alloy inner pipes (9) are fixedly installed on the inner walls of the valve body (1) and the two flange pipes (2), and the outer sides of the valve body (1) and the two flange pipes (2) are epoxy painted.

7. The corrosion resistant triple offset butterfly valve according to claim 1, wherein, A sealing ring (5) is slidably sleeved on the lower part of the damping rotation seat (4) of the rotating rod (6), and the outer side of the butterfly plate (8) is fixedly sleeved with a sealing sleeve (12).

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