Double-eccentric butterfly valve with long service life

Abstract

The utility model discloses a pair of clamping formula long -life double eccentric butterfly valve relates to pair of clamping formula double eccentric butterfly valve technical field, including pair of clamping formula double eccentric butterfly valve shell, valve plate and valve seat, the left end fixed of pair of clamping formula double eccentric butterfly valve shell has first receiving seat, the right end fixed of pair of clamping formula double eccentric butterfly valve shell has second receiving seat, the inside rotation of first receiving seat and second receiving seat installs the rotating lever, the right end fixed of rotating lever has first bevel gear, the top of first bevel gear is connected with second bevel gear and engages, second bevel gear is connected with first gear through link member, install electric control assembly on second receiving seat, install manual control assembly above first gear. This pair of clamping formula long -life double eccentric butterfly valve, the conversion of convenient manual control or electric control is improved the strength of valve plate and makes valve plate impact -resistant, can prolong the service life of valve plate.

Description

Technical Field

[0001] This utility model relates to the technical field of wafer-type double eccentric butterfly valves, specifically a wafer-type high-life double eccentric butterfly valve. Background Technology

[0002] The wafer-type double eccentric butterfly valve is easy to install. During installation, it is sandwiched between two sets of pipes and is used to control the flow of various types of fluids such as air, water, steam, corrosive media, mud, oil, liquid metal and radioactive media.

[0003] Chinese Patent CN208935412U discloses a DN50-DN300 double eccentric wafer-type corrosion-resistant butterfly valve, including a valve body, valve plate, valve stem, and valve shaft. An upper axial positioning sleeve and a lower axial positioning sleeve are integrally cast within the valve cavity of the valve body, corresponding to the valve stem mounting hole. The valve seat includes an annular body, the inner circumferential sealing surface of which forms a sealing pair with the outer circumferential sealing surface of the valve plate. An annular positioning protrusion is provided on the annular body at the inlet end, and an annular positioning groove is provided on the valve body corresponding to the position of the annular positioning protrusion. An annular sealing compensation groove for sealing compensation under reverse pressure is provided on the annular body at the outlet end, near the inner circumferential sealing surface. The center line of the annular sealing compensation groove is not on the same circumference as the center line of the aforementioned annular positioning protrusion. This utility model enables vertical valve installation, improves assembly efficiency, and facilitates processing; it also enables sealing compensation under frontal pressure, improving valve sealing effect and service life.

[0004] Based on existing solutions and actual production and processing, the existing wafer-type double eccentric butterfly valve only has one control mode, which is inconvenient to switch between manual and electric control. When the valve plate is closed, it is subjected to water or gas impact for a long time, and the strength of the valve plate needs to be improved. Therefore, we propose a wafer-type high-life double eccentric butterfly valve to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a high-life double eccentric butterfly valve with a wafer-type design, in order to solve the problems mentioned in the background art, such as the existing double eccentric butterfly valve having only one control mode, making it inconvenient to switch between manual and electric control, and the valve plate being subjected to prolonged impact from water or gas when closed, requiring improvement in the strength of the valve plate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wafer-type high-life double eccentric butterfly valve, comprising a wafer-type double eccentric butterfly valve housing, a valve plate, and a valve seat:

[0007] The left end of the housing of the double-eccentric butterfly valve is fixed with a first receiving seat, and the right end of the housing of the double-eccentric butterfly valve is fixed with a second receiving seat. A rotating rod is rotatably installed inside both the first and second receiving seats. A first bevel gear is fixed to the right end of the rotating rod. A second bevel gear is meshed with the top of the first bevel gear. The second bevel gear is connected to the first gear through a rod. An electric control component is installed on the second receiving seat, and a manual control component is installed above the first gear.

[0008] A first reinforcing plate is fixed to the outer side of the valve plate, a rotating rod is fixed inside the first reinforcing plate, a second reinforcing plate is provided on the inner side of the first reinforcing plate, and a valve seat is installed at the inner end of the outer shell of the clamp-type double eccentric butterfly valve.

[0009] The above technical solution facilitates the switching between manual and electric control, improves the strength of the valve plate, makes the valve plate more impact-resistant, and extends the service life of the valve plate.

[0010] Preferably, the rotating rod extends through the outer end of the housing of the double eccentric butterfly valve.

[0011] Preferably, a rotary sealing ring is installed at the connection between the rotating rod and the housing of the double eccentric butterfly valve.

[0012] Preferably, the electric control component includes a motor and a second gear. The motor is fixed to the rear end of the upper surface of the second receiving seat, and the output shaft of the motor is engaged with the second gear, which meshes with the first gear.

[0013] Preferably, a rectangular groove is formed in the middle of the second gear.

[0014] Preferably, the manual control assembly includes a handle and a limiting rod, with the handle fixed to the upper surface of the first gear and the limiting rod rotatably mounted on the top of the second receiving seat.

[0015] Preferably, the outer end of the handle has a groove at an equal angle, and the limiting rod is connected to the handle through the groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the clamp-type high-life double eccentric butterfly valve facilitates the switching between manual and electric control, improves the strength of the valve plate, makes the valve plate more impact-resistant, and can extend the service life of the valve plate.

[0017] 1. The electric control component includes a motor and a second gear, and the manual control component includes a handle and a limiting lever. The second gear is engaged with the output shaft of the motor, and manual or electric control can be achieved by assembling or disassembling the second gear.

[0018] The outer end of the handle has a groove at an equal angle, and the limiting rod is connected to the handle through the groove. When manually controlling the handle, the limiting rod is rotated to rotate into the corresponding groove, which facilitates the limiting of the handle.

[0019] 2. A first reinforcing plate is fixed to the outer side of the valve plate, and a second reinforcing plate is provided on the inner side of the first reinforcing plate. The arrangement of the first and second reinforcing plates can enhance the strength of the valve plate and extend its service life.

[0020] 3. A rotary sealing ring is installed at the connection between the rotating rod and the housing of the double-eccentric butterfly valve to prevent water leakage at the connection between the rotating rod and the housing of the double-eccentric butterfly valve. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a schematic diagram of the axonal structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the axial section structure of this utility model;

[0024] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the valve plate in the rotating state of this utility model;

[0026] Figure 5 This is a schematic diagram of the separation structure of the limiting rod and handle of this utility model.

[0027] In the diagram: 1. Housing of the double eccentric butterfly valve; 2. First receiving seat; 3. Second receiving seat; 4. Rotating rod; 5. First bevel gear; 6. Second bevel gear; 7. First gear; 8. Motor; 9. Second gear; 10. Handle; 11. Limiting rod; 12. Valve plate; 13. First reinforcing plate; 14. Second reinforcing plate; 15. Valve seat. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] The existing double eccentric butterfly valve has only one control mode, which is inconvenient to switch between manual and electric control. When the valve plate 12 is closed, the valve plate 12 is impacted by water or gas for a long time, and the strength of the valve plate 12 needs to be improved. In order to solve this technical problem, the following technical content is disclosed in this embodiment.

[0030] Please see Figures 1-5 A high-life double eccentric butterfly valve with a wafer-type design includes a wafer-type double eccentric butterfly valve housing 1, a first receiving seat 2, a second receiving seat 3, a rotating rod 4, a first bevel gear 5, a second bevel gear 6, a first gear 7, a motor 8, a second gear 9, a handle 10, a limiting rod 11, a valve plate 12, a first reinforcing plate 13, a second reinforcing plate 14, and a valve seat 15.

[0031] A first receiving seat 2 is fixed to the left end of the housing 1 of the double-eccentric butterfly valve, and a second receiving seat 3 is fixed to the right end of the housing 1 of the double-eccentric butterfly valve. A rotating rod 4 is rotatably installed inside both the first receiving seat 2 and the second receiving seat 3. The rotating rod 4 passes through the outer end of the housing 1 of the double-eccentric butterfly valve. A first bevel gear 5 is fixed to the right end of the rotating rod 4. A second bevel gear 6 is meshed with the top of the first bevel gear 5. The second bevel gear 6 is connected to the first gear 7 through a rod. An electric control component is installed on the second receiving seat 3.

[0032] The valve plate 12 can be electrically controlled by the electric control component, which includes a motor 8 and a second gear 9. The motor 8 is fixed to the rear end of the upper surface of the second receiving seat 3. The output shaft of the motor 8 is engaged with the second gear 9, and the second gear 9 is meshed with the first gear 7. The motor 8 drives the second gear 9 to rotate, and the first gear 7 meshed with the second gear 9 rotates, thereby rotating the rotating rod 4, the first bevel gear 5 and the second bevel gear 6, and thus rotating the valve plate 12, controlling the opening and closing of the clamp-type double eccentric butterfly valve.

[0033] A manual control assembly is installed above the first gear 7. The manual control assembly includes a handle 10 and a limiting rod 11. The handle 10 is fixed on the upper surface of the first gear 7. The limiting rod 11 is rotatably installed on the top of the second receiving seat 3. The outer end of the handle 10 is provided with a groove at an equal angle, and the limiting rod 11 is connected to the handle 10 through the groove.

[0034] When it is necessary to manually control the valve plate 12, remove the second gear 9 from the output shaft of the motor 8, and then manually turn the handle 10. After turning to a certain angle, turn the limiting rod 11 so that the top of the limiting rod 11 is inserted into the groove of the handle 10, thereby limiting the handle 10 and the first gear 7.

[0035] A first reinforcing plate 13 is fixed to the outer side of the valve plate 12, a rotating rod 4 is fixed inside the first reinforcing plate 13, a second reinforcing plate 14 is provided on the inner side of the first reinforcing plate 13, and a valve seat 15 is installed on the inner end of the outer shell 1 of the double eccentric butterfly valve.

[0036] When the high-life double eccentric butterfly valve is closed, the valve plate 12 is rotated to align with the valve seat 15. The first reinforcing plate 13 and the second reinforcing plate 14 face the side impacted by water or gas. The strength of the valve plate 12 is improved by the first reinforcing plate 13 and the second reinforcing plate 14, thus extending the service life of the valve plate 12.

[0037] A rotary sealing ring is installed at the connection between the rotating rod 4 and the outer shell 1 of the double eccentric butterfly valve to prevent water leakage from the valve body.

[0038] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wafer-type high-life double eccentric butterfly valve, comprising a wafer-type double eccentric butterfly valve housing (1), a valve plate (12), and a valve seat (15), characterized in that: The left end of the housing (1) of the double-eccentric butterfly valve is fixed with a first receiving seat (2), and the right end of the housing (1) of the double-eccentric butterfly valve is fixed with a second receiving seat (3). The first receiving seat (2) and the second receiving seat (3) are both rotatably mounted with a rotating rod (4). The right end of the rotating rod (4) is fixed with a first bevel gear (5). The top end of the first bevel gear (5) is meshed with a second bevel gear (6). The second bevel gear (6) is connected to a first gear (7) through a rod. An electric control component is installed on the second receiving seat (3), and a manual control component is installed above the first gear (7). The outer side of the valve plate (12) is fixed with a first reinforcing plate (13), the inside of the first reinforcing plate (13) is fixed with a rotating rod (4), the inner side of the first reinforcing plate (13) is provided with a second reinforcing plate (14), and the inner end of the outer shell (1) of the double eccentric butterfly valve is equipped with a valve seat (15).

2. The wafer-type high-life double eccentric butterfly valve according to claim 1, characterized in that: The rotating rod (4) passes through the outer end of the housing (1) of the double eccentric butterfly valve.

3. The wafer-type high-life double eccentric butterfly valve according to claim 1, characterized in that: A rotary sealing ring is installed at the connection between the rotating rod (4) and the outer shell (1) of the double-eccentric butterfly valve.

4. The wafer-type high-life double eccentric butterfly valve according to claim 1, characterized in that: The electric control assembly includes a motor (8) and a second gear (9). The motor (8) is fixed to the rear end of the upper surface of the second receiving seat (3). The output shaft of the motor (8) is engaged with the second gear (9), and the second gear (9) is meshed with the first gear (7).

5. The wafer-type high-life double eccentric butterfly valve according to claim 4, characterized in that: The second gear (9) has a rectangular groove in the middle.

6. The wafer-type high-life double eccentric butterfly valve according to claim 1, characterized in that: The manual control assembly includes a handle (10) and a limiting lever (11), with the handle (10) fixed to the upper surface of the first gear (7).

7. The wafer-type high-life double eccentric butterfly valve according to claim 1, characterized in that: A limiting rod (11) is rotatably mounted on the top of the second receiving seat (3).

8. The wafer-type high-life double eccentric butterfly valve according to claim 6, characterized in that: The outer end of the handle (10) is provided with a groove at an equal angle, and the limiting rod (11) is connected to the handle (10) through the groove.

Images