Three-eccentric center butterfly valve structure

Abstract

The utility model relates to the technical field of sealing butterfly valves, in particular to a three-eccentric butterfly valve structure which comprises a valve body, a sleeve shaft rod is fixedly connected to the upper surface of the valve body, a driving shaft is rotatably connected to the interior of the sleeve shaft rod, a valve plate is fixedly connected to the outer surface of the driving shaft, and a control box is fixedly connected to the upper end of the sleeve shaft rod. A control box is fixedly connected to the upper surface of the valve body, a hand wheel is fixedly connected to the input end of the control box, a filter frame is movably connected to the lower surface of the valve body in an embedded mode, and a locking base is connected to the lower surface of the valve body in an embedded mode. The filter frame is matched with a rubber sealing ring to achieve sealing between the filter frame and a limiting frame, a double-end lead screw is rotated, and the double-end lead screw drives an extrusion block to move; the extrusion block and the slope are separated, the lower end of the filter frame is not limited, at the moment, the filter frame can be manually pulled out downwards, the position of the filter screen can be conveniently cleaned in the later period, the filter frame can be taken out without disassembling the whole valve body, and the filter screen is more convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed butterfly valves, specifically to the structure of a triple eccentric butterfly valve. Background Technique

[0002] Eccentric butterfly valves are divided into single eccentric butterfly valves, double eccentric butterfly valves, triple eccentric butterfly valves, and variable eccentric butterfly valves. Opposite to concentric butterfly valves, a butterfly valve whose valve stem axis deviates from both the disc center and the body center simultaneously and whose sealing pair is an inclined cone is called an eccentric butterfly valve. For example, a triple eccentric butterfly valve thrust bearing structure recorded in the publication number CN221196110U includes a valve body. One end outer surface of the docking plate is provided with fixing holes. The outer wall of the valve body is movably connected with a hexagonal nut. The upper end outer surface of the hexagonal nut is movably connected with a connecting valve stem. The outer wall of the valve body is movably connected with an adjusting device;

[0003] The above device is convenient for staff to install, and when the sealing ring needs to be replaced due to high-temperature expansion, the replacement speed can be increased. The filter screen can play a certain filtering role. First, the adjusting structure can completely rely on an external working platform for support. And after the filter screen is used for a period of time, it needs to be cleaned. The above device needs to remove the bolts on the flange plate and disassemble the entire valve body to clean it, resulting in inconvenience when cleaning the device. Content of the Utility Model

[0004] The purpose of the utility model is to provide a triple eccentric butterfly valve structure to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] A triple eccentric butterfly valve structure includes a valve body. A sleeve shaft rod is fixedly connected to the upper surface of the valve body. A drive shaft is rotatably connected inside the sleeve shaft rod. A valve plate is fixedly connected to the outer surface of the drive shaft. A control box is fixedly connected to the upper end of the sleeve shaft rod. A handwheel is fixedly connected to the input end of the control box. A filter frame is embedded and movably connected to the lower surface of the valve body. A locking base is nested and connected to the lower surface of the valve body. A locking semi-hoop is detachably connected to the upper surface of the locking base. A limiting plate is fixedly connected to the upper surface of the locking semi-hoop. A limiting column is embedded and movably connected to the side surface of the limiting plate. A pressing plate is nested and connected to one end of the limiting column. A screw rod is fixedly connected to the side surface of the control box.

[0007] Furthermore: Flange plates are fixedly connected to both ends of the valve body. A baffle is fixedly connected to the inner wall of the valve body. A limiting frame is fixedly connected to the position corresponding to the lower surface of the valve body and the baffle. The filter frame is slidably connected to the limiting frame.

[0008] Furthermore, a rubber sealing ring is nested and connected to the outer surface of the filter frame, a filter screen is embedded and connected to the side surface of the filter frame, and a slope is provided on the side surface of the filter frame.

[0009] Furthermore, a double-headed screw rod is embedded and rotatably connected to the side surface of the locking base, the middle part of the double-headed screw rod is a hexagonal part, a limiting rod is detachably connected to the side surface of the limiting frame, an extrusion block is threadedly connected to the outer surface of the double-headed screw rod, the limiting rod penetrates through the extrusion block, and the extrusion block is matched with the slope.

[0010] Furthermore, the other end of the limiting column is fixedly connected with an extrusion ring, and the extrusion ring is in close contact with the hand wheel.

[0011] Furthermore, a locking wheel is threadedly connected to the outer surface of the screw rod, and the locking wheel abuts against the extrusion plate.

[0012] Furthermore, a fixing column is fixedly connected to the side surface of the valve plate, a sleeve is nested and connected to the outer surface of the fixing column, a spring is nested and connected to the outer surface of the fixing column, a cover body is detachably connected to the side surface of the valve plate, a bolt is threadedly connected to the outer surface of the cover body, and a sealing sleeve is nested and connected to the outer surface of the valve plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The filter frame cooperates with the rubber sealing ring to achieve the seal between the filter frame and the limiting frame. Rotate the double-headed screw rod, and the double-headed screw rod drives the extrusion block to move, so that the extrusion block is separated from the slope, and the lower end of the filter frame loses its limit. At this time, the filter frame can be manually pulled out downward, which is convenient for cleaning the position of the filter screen later. The filter frame can be taken out without disassembling the entire valve body, making the cleaning of the filter screen more convenient;

[0015] Manually rotate the locking wheel, and the locking wheel squeezes the extrusion plate, so that the extrusion plate drives the limiting column to move, and the extrusion ring contacts the hand wheel, preventing the hand wheel from deflecting under the influence of external vibration, and further avoiding affecting the internal flow rate of the butterfly valve. Description of the Drawings

[0016] Figure 1 is the overall schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the filter frame of the present utility model;

[0018] Figure 3 is the structural schematic diagram of the locking base of the present utility model;

[0019] Figure 4 is the split structural schematic diagram of the valve plate of the present utility model.

[0020] In the figure: 1. Valve body; 101. Flange; 102. Baffle; 103. Limit frame; 2. Filter frame; 201. Rubber sealing ring; 202. Filter screen; 203. Slope; 3. Locking base; 301. Double-headed screw rod; 302. Hexagonal part; 303. Limit rod; 304. Extrusion block; 4. Locking half hoop; 401. Limit plate; 402. Limit column; 403. Extrusion ring; 404. Extrusion plate; 5. Control box; 501. Sleeve shaft rod; 502. Drive shaft; 503. Handwheel; 504. Screw rod; 505. Locking wheel; 6. Valve plate; 601. Fixed column; 602. Sleeve; 603. Spring; 604. Cover body; 605. Bolt; 606. Sealing sleeve. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 4 , in the embodiment of the present invention, the three-eccentric butterfly valve structure includes a valve body 1. A sleeve shaft rod 501 is fixedly connected to the upper surface of the valve body 1. A drive shaft 502 is rotatably connected inside the sleeve shaft rod 501. A valve plate 6 is fixedly connected to the outer surface of the drive shaft 502. A control box 5 is fixedly connected to the upper end of the sleeve shaft rod 501. A handwheel 503 is fixedly connected to the input end of the control box 5. A filter frame 2 is embedded and movably connected to the lower surface of the valve body 1. A locking base 3 is nested and connected to the lower surface of the valve body 1. A locking half hoop 4 is detachably connected to the upper surface of the locking base 3. A limit plate 401 is fixedly connected to the upper surface of the locking half hoop 4. A limit column 402 is embedded and movably connected to the side surface of the limit plate 401. One end of the limit column 402 is nested and connected with an extrusion plate 404. A screw rod 504 is fixedly connected to the side surface of the control box 5.

[0023] Specifically, the control box 5 is a prior art and will not be elaborated herein. In the prior art, the rotary handwheel 503 cooperates with the control box 5 to drive the drive shaft 502 inside the sleeve shaft 501 to rotate, causing the drive shaft 502 to drive the valve plate 6 to flip, realizing the conduction of fluid. The device is installed on the pipeline using a threaded fixing component and a flange 101. Among them, the filter box 2 filters the fluid. When the filter box 2 needs to be replaced, rotate the double-headed lead screw 301, and the filter box 2 will lose the external fixation, and then the filter box 2 can be pulled out for cleaning. When cleaning, the entire valve body 1 does not need to be disassembled. At the same time, when the pressing plate 404 presses the handwheel 503, the pressing plate 404 fixes the handwheel 503 to prevent the handwheel 503 from deflecting under the force when the pipeline vibrates, further avoiding affecting the flow rate inside the butterfly valve.

[0024] Embodiment 1

[0025] As Figures 1 - 4 shown, flange plates 101 are fixedly connected to both ends of the valve body 1, a baffle 102 is fixedly connected to the inner wall of the valve body 1, a limit frame 103 is fixedly connected to the corresponding position on the lower surface of the valve body 1 and the baffle 102, and the filter box 2 is slidably connected to the limit frame 103.

[0026] In this embodiment, the valve body 1 is installed on the external fluid pipeline in cooperation with the flange 101 and the external threaded components, and the baffle 102 and the limit frame 103 limit the filter box 2.

[0027] As Figures 1 - 4 shown, a rubber sealing ring 201 is nested and connected to the outer surface of the filter box 2, a filter screen 202 is embedded and connected to the side surface of the filter box 2, a slope 203 is provided on the side surface of the filter box 2, a double-headed lead screw 301 is rotatably embedded and connected to the side surface of the locking base 3, the middle part of the double-headed lead screw 301 is a hexagonal part 302, a limit rod 303 is detachably connected to the side surface of the limit frame 103, and a pressing block 304 is threadedly connected to the outer surface of the double-headed lead screw 301, and the pressing block 304 is matched with the slope 203.

[0028] In this embodiment, the filter box 2 cooperates with the rubber sealing ring 201 to achieve the seal between the filter box 2 and the limit frame 103. Rotate the double-headed lead screw 301, and the double-headed lead screw 301 drives the pressing block 304 to move, causing the pressing block 304 to separate from the slope 203, so that the lower end of the filter box 2 loses the limit. At this time, the filter box 2 can be manually pulled out downward, which is convenient for cleaning the position of the filter screen 202 later. The filter box 2 can be taken out without disassembling the entire valve body 1, making the cleaning of the filter screen 202 more convenient.

[0029] Embodiment 2

[0030] On the basis of Embodiment 1, in order to make up for the problem that it is inconvenient to fix the handwheel 503 in Embodiment 1.

[0031] As Figures 1 - 4 shown, the other end of the limit post 402 is fixedly connected with a pressing ring 403. The pressing ring 403 is in close contact with the handwheel 503. A locking wheel 505 is threadedly connected to the outer surface of the screw rod 504, and the locking wheel 505 abuts against the pressing plate 404.

[0032] In this embodiment, manually rotate the locking wheel 505. The locking wheel 505 presses the pressing plate 404, causing the pressing plate 404 to drive the limit post 402 to move, so that the pressing ring 403 contacts the handwheel 503, preventing the handwheel 503 from deflecting under the influence of external vibration, and further avoiding affecting the internal flow rate of the butterfly valve.

[0033] As Figures 1 - 4 shown, a fixing post 601 is fixedly connected to the side surface of the valve plate 6. A sleeve 602 is nested on the outer surface of the fixing post 601, a spring 603 is nested on the outer surface of the fixing post 601. A cover body 604 is detachably connected to the side surface of the valve plate 6. A bolt 605 is threadedly connected to the outer surface of the cover body 604, and a sealing sleeve 606 is nested on the outer surface of the valve plate 6.

[0034] In this embodiment, manually squeeze the cover body 604 from the outside to the inside, so that the cover body 604 squeezes the spring 603, separating the cover body 604 from the sealing sleeve 606, and making the sealing sleeve 606 lose the fixation of the cover body 604, facilitating the later removal of the sealing sleeve 606 and facilitating the later replacement of the sealing sleeve 606.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0036] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A triple eccentric butterfly valve structure, comprising a valve body (1), characterized in that: The upper surface of the valve body (1) is fixedly connected to a sleeve shaft rod (501), the interior of the sleeve shaft rod (501) is rotatably connected to a drive shaft (502), the outer surface of the drive shaft (502) is fixedly connected to a valve plate (6), the upper end of the sleeve shaft rod (501) is fixedly connected to a control box (5), the input end of the control box (5) is fixedly connected to a hand wheel (503), the lower surface of the valve body (1) is embedded with a filter frame (2) that is movably connected, and the valve body The lower surface of (1) is nested and connected with a locking base (3), the upper surface of the locking base (3) is detachably connected with a locking half hoop (4), the upper surface of the locking half hoop (4) is fixedly connected with a limiting plate (401), the side surface of the limiting plate (401) is embedded with a movably connected limiting column (402), one end of the limiting column (402) is nested and connected with an extrusion plate (404), and the side surface of the control box (5) is fixedly connected with a screw (504).

2. The triple eccentric butterfly valve structure according to claim 1, characterized in that: Both ends of the valve body (1) are fixedly connected to flanges (101), the inner wall of the valve body (1) is fixedly connected to a baffle (102), the lower surface of the valve body (1) and the baffle (102) are fixedly connected to a limit frame (103) at corresponding positions, and the filter frame (2) and the limit frame (103) are slidably connected.

3. The triple eccentric butterfly valve structure according to claim 2, characterized in that: A rubber sealing ring (201) is nested and connected to the outer surface of the filter frame (2), a filter screen (202) is embedded and connected to the side surface of the filter frame (2), and a slope (203) is provided on the side surface of the filter frame (2).

4. The triple eccentric butterfly valve structure according to claim 3, characterized in that: A double-headed screw (301) is embedded and rotatably connected to the side surface of the locking base (3); the middle part of the double-headed screw (301) is a hexagonal part (302); the side surface of the limit frame (103) is detachably connected to the limit rod (303); the outer surface of the double-headed screw (301) is threadedly connected to an extrusion block (304); the limit rod (303) passes through the extrusion block (304); and the extrusion block (304) and the slope (203) match.

5. The triple eccentric butterfly valve structure according to claim 1, characterized in that: The other end of the limiting column (402) is fixedly connected with a squeezing ring (403), and the squeezing ring (403) is in close contact with the hand wheel (503).

6. The triple eccentric butterfly valve structure according to claim 1, characterized in that: The outer surface of the screw rod (504) is threadedly connected with a locking wheel (505), and the locking wheel (505) is in conflict with the extrusion plate (404).

7. The triple eccentric butterfly valve structure according to claim 1, characterized in that: The side surface of the valve plate (6) is fixedly connected to a fixing column (601), the outer surface of the fixing column (601) is nested with a sleeve (602), the outer surface of the fixing column (601) is nested with a spring (603), the side surface of the valve plate (6) is detachably connected to a cover body (604), the outer surface of the cover body (604) is threadedly connected to a bolt (605), and the outer surface of the valve plate (6) is nested with a sealing sleeve (606).

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