Electric flange butterfly valve for drainage system

Abstract

The utility model discloses an electric flange butterfly valve for a drainage system, which comprises a valve body, connecting flanges are arranged at two ends of the valve body, a valve core component is arranged on the valve body, and a driving mechanism is arranged on the valve core component. The valve element assembly comprises a connecting shell, and the connecting shell is rotationally connected with the valve body. According to the utility model, through the arrangement of the valve core assembly, when the valve is replaced, the connecting shell needs to be wholly rotated firstly, and the valve is blocked by utilizing the connecting shell, so that waste water cannot pass through the valve body, the condition of water seepage cannot occur in the valve replacement process, the replacement of the valve is greatly facilitated, and the requirements of a drainage system are practically met; according to the electric flange butterfly valve, the cross rod is arranged to be matched with the receding groove, so that when a user disassembles the connecting disc, the connecting shell needs to be rotated to the state of blocking the valve body, waste water overflow caused by misoperation is avoided, and the safety of the electric flange butterfly valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline valve equipment, in particular to an electric flange butterfly valve for a drainage system. Background Technique

[0002] An electric flange butterfly valve is usually composed of an angular travel electric actuator (partial rotation of 0 - 90°) and the butterfly valve as a whole through mechanical connection, and they jointly form after installation and commissioning. Moreover, it has a simple structure, small volume, and light weight, consisting of only a few parts. And it can be quickly opened and closed by only rotating 90°, with simple operation. At the same time, the valve has good fluid control characteristics. The butterfly valve is widely used not only in general industries such as petroleum, gas, chemical industry, and water treatment, but also in the cooling water system of thermal power stations.

[0003] In a drainage system, the wastewater often contains various harmful substances, and even in a high-temperature state, it often has strong corrosiveness, which makes the valve of the electric flange butterfly valve need to be replaced regularly, especially for the elastic seal valve with high requirements for sealing performance. However, when replacing the valve of the existing electric flange butterfly valve, the entire electric flange butterfly valve needs to be disassembled from the pipeline and then replaced, which is rather inconvenient to use. Therefore, we propose an electric flange butterfly valve for a drainage system to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and propose an electric flange butterfly valve for a drainage system.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An electric flange butterfly valve for a drainage system includes a valve body, connection flanges are arranged at both ends of the valve body, a valve core assembly is arranged on the valve body, and a driving mechanism is arranged on the valve core assembly;

[0007] The valve core assembly includes a connection shell, the connection shell is rotatably connected with the valve body, and relief openings are arranged on both sides of the connection shell. A connection disk is threadedly connected inside the connection shell. A cross bar is slidably connected to the connection shell. Relief grooves matching the cross bar are opened on both the valve body and the connection disk. A transmission rod is inserted into the connection disk. The lower end of the transmission rod is detachably connected with a valve, and the upper end of the transmission rod is in transmission connection with the driving mechanism.

[0008] Preferably, the driving mechanism includes an extension frame fixedly connected with the connection disk, a driving motor is fixedly connected to the extension frame, a speed change gear set is arranged at the output end of the driving motor, and the output end of the speed change gear set is fixedly connected with the transmission rod.

[0009] Preferably, the connecting shell is cylindrical, and sealing gaskets are provided at both upper and lower ends of the connecting shell, a stabilizing shaft is provided at the lower end of the connecting shell, and the lower end of the stabilizing shaft is rotatably connected to the lower inner wall of the valve body.

[0010] Preferably, a hand wheel is rotatably connected to the extension frame, and a driving rod is fixedly connected to the hand wheel, and the driving rod is transmission-connected to the transmission rod.

[0011] Preferably, the crossbar is slidably connected to a vertically arranged insertion rod, and the connection shell is provided with a slot matching the insertion rod.

[0012] Preferably, a sealing sleeve is provided on the lower surface of the connecting disk, and the sealing sleeve is interference fit with the inner wall of the connecting shell.

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

[0014] 1. The utility model provides a valve core assembly. When replacing the valve, the connecting shell needs to be rotated as a whole first, and the connecting shell is used to block the valve, so that waste water cannot pass through the valve body, and water seepage will not occur during the replacement of the valve, which greatly facilitates the replacement of the valve and effectively meets the needs of the drainage system. By providing a cross bar with a giving way groove, the user needs to rotate the connecting shell to the state of blocking the valve body when removing the connecting plate, so as to avoid waste water overflow due to operating errors, thereby improving the safety of the electric flange butterfly valve;

[0015] 2. The utility model, by providing a hand wheel, can manually control the opening and closing of the electric flange butterfly valve in the event of a drive motor failure or power outage. By providing a sealing gasket in conjunction with a stabilizing shaft, the stability of the connecting shell can be improved to avoid displacement of the connecting shell under the drive of water pressure when the connecting block blocks the valve body, thereby preventing waste water from seeping out, thereby improving the sealing of the electric flange butterfly valve when replacing the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic cross-sectional view of an electric flange butterfly valve for a drainage system proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of a connection shell structure of an electric flange butterfly valve for a drainage system proposed by the utility model;

[0018] Figure 3 This is a side view structural diagram of an electric flange butterfly valve for a drainage system proposed by the utility model;

[0019] Figure 4 The utility model is a schematic diagram of a top view of an electric flange butterfly valve for a drainage system.

[0020] In the figure: 1, valve body; 2, connecting flange; 3, connecting shell; 4, connecting disk; 5, cross bar; 6, relief groove; 7, transmission rod; 8, valve; 9, extension bracket; 10, speed change gear set; 11, drive motor; 12, sealing washer; 13, stabilizing shaft; 14, hand wheel; 15, inserting rod; 16, sealing sleeve. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Refer to Figures 1-3 , an electric flange butterfly valve for a drainage system, including a valve body 1, connecting flanges 2 are arranged at both ends of the valve body 1, a valve core assembly is arranged on the valve body 1, and a driving mechanism is arranged on the valve core assembly;

[0023] Wherein the connecting flange 2 is used to connect this kind of butterfly valve in the drainage pipeline, and the driving mechanism drives the valve core assembly to operate to realize the functions of opening and closing the valve 8;

[0024] The valve core assembly includes a connecting shell 3, the connecting shell 3 is rotatably connected to the valve body 1, and relief openings are arranged on both sides of the connecting shell 3. A connecting disk 4 is threadedly connected inside the connecting shell 3. A cross bar 5 is slidably connected to the connecting shell 3. Relief grooves 6 matching the cross bar 5 are opened on both the valve body 1 and the connecting disk 4. A transmission rod 7 is inserted into the connecting disk 4. The transmission rod 7 is sealed with the connecting disk 4 through a rubber sealing sleeve arranged on the outside. The lower end of the transmission rod 7 is detachably connected to the valve 8, and the upper end of the transmission rod 7 is in transmission connection with the driving mechanism. The sealing mode between the valve 8 and the connecting shell 3 is realized through a sealing member arranged inside the connecting shell 3. This sealing structure is a prior art and will not be elaborated here;

[0025] In this design, the connecting shell 3 can rotate within the valve body 1, and the wastewater passing through this butterfly valve will continue to flow through the relief opening. After the sealing performance of the valve 8 deteriorates due to factors such as corrosion and aging, the user first rotates the entire connecting shell 3 to make the relief opening perpendicular to the flow direction of the wastewater, and uses the connecting shell 3 to block the valve body 1, so that the wastewater cannot pass through the relief opening. At this time, the cross bar 5 is collinear with the relief groove 6 on the valve body 1. The user can slide the cross bar 5 into the relief groove 6 located on the valve body 1, and then remove the connecting disk 4. After removing the connecting disk 4, both the transmission rod 7 and the valve 8 are taken out from the connecting shell 3. At this time, the user can relatively easily replace the valve 8. After the replacement is completed, the connecting disk 4 is screwed into the connecting shell 3, and then the cross bar 5 is slid, and the cross bar 5 is slid into the relief groove 6 located on the connecting disk 4. At this time, the connecting disk 4 cannot rotate. Finally, the user rotates the connecting shell 3 back to the initial state, and at this time the butterfly valve can continue to operate normally. In this design, by setting the spool assembly, it is convenient for the user to replace the valve 8. There is no need to disassemble the entire butterfly valve for replacement, nor is it necessary to set an additional stop valve in the management to prevent wastewater from leaking out when replacing the valve 8, which greatly facilitates the management of the drainage system. In addition, the cross bar 5 is used in cooperation with the relief groove 6 to make this spool assembly have a certain anti-fooling design, and the connecting disk 4 will not be removed when the wastewater can pass through the relief opening;

[0026] In addition, after this design, there are two cross bars 5, so that when one side of the connecting shell 3 leaks after multiple uses, the other side of the connecting shell 3 can be rotated to the state of blocking the valve 8, thereby extending the service frequency of the connecting shell 3 and improving the overall life of this butterfly valve.

[0027] Furthermore, the drive mechanism includes an extension frame 9 fixedly connected to the connecting disk 4. A drive motor 11 is fixedly connected to the extension frame 9. The extension frame 9 is provided to fix the drive motor 11, so that the drive motor 11 itself cannot rotate relative to the drive disk. A speed change gear set 10 is provided at the output end of the drive motor 11, and the output end of the speed change gear set 10 is fixedly connected to the transmission rod 7;

[0028] In this design, since the butterfly valve only needs to rotate 90°, the design of using the drive motor 11 in combination with the speed change gear set 10 is adopted. The torque is changed by the transmission of the speed change gear set 10, so that the low-torque drive motor 11 can drive this butterfly valve to open or close, reducing the equipment cost.

[0029] In other embodiments, the drive mechanism can also use a manual device, a worm and worm gear transmission device, or a pneumatic transmission device to realize the opening or closing of the butterfly valve.

[0030] Furthermore, the connecting shell 3 is cylindrical, and sealing washers 12 are arranged at both the upper and lower ends of the connecting shell 3. A stabilizing shaft 13 is arranged at the lower end of the connecting shell 3, and the lower end of the stabilizing shaft 13 is rotatably connected to the inner wall of the lower end of the valve body 1;

[0031] In this design, the sealing washer 12 is used to ensure the sealing effect between the connecting shell 3 and the valve body 1, and the stabilizing shaft 13 is provided to limit the connecting shell 3 to prevent it from shifting during use, resulting in a large gap between the connecting shell 3 and the valve body 1.

[0032] Furthermore, a handwheel 14 is rotatably connected to the extension bracket 9, and a driving rod is fixedly connected to the handwheel 14. The driving rod is in transmission connection with the transmission rod 7;

[0033] By providing the handwheel 14, in the case of a failure or power outage of the driving motor 11, the opening and closing of this electric flange butterfly valve can be manually controlled. The driving rod can be in transmission connection with the input end of the speed change gear set 10 to control the transmission rod 7, or can be directly connected to the transmission rod 7. The specific design is based on the diameter of the handwheel 14 and the torque required for the opening and closing of the valve 8.

[0034] Furthermore, a vertically arranged insertion rod 15 is slidably connected to the cross bar 5, and a slot matching the insertion rod 15 is provided on the connecting shell 3;

[0035] The insertion rod 15 and the slot can be used to fix the cross bar 5, mainly to ensure that the cross bar 5 can remain in the relief groove 6 on the valve body 1 after the connecting plate 4 is removed, avoiding the state of the connecting shell 3. In addition, the insertion rod 15 can also be used as a handle to facilitate the user to slide the cross bar 5 and rotate the entire connecting shell 3.

[0036] Furthermore, a sealing sleeve 16 is arranged on the lower surface of the connecting plate 4, and the sealing sleeve 16 is in interference fit with the inner wall of the connecting shell 3;

[0037] The sealing sleeve 16 is provided to improve the sealing performance between the connecting plate 4 and the connecting shell 3. Especially when the valve 8 is replaced, the connecting plate 4 is often disassembled. The position where it is repeatedly installed and disassembled requires better sealing to avoid increased gaps between components due to wear and outward water seepage.

[0038] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An electric flange butterfly valve for a drainage system, comprising a valve body (1), and connecting flanges (2) are arranged at both ends of the valve body (1), characterized in that, The valve body (1) is provided with a valve core assembly, and the valve core assembly is provided with a driving mechanism; The valve core assembly comprises a connecting shell (3), the connecting shell (3) is rotatably connected to the valve body (1), and two sides of the connecting shell (3) are provided with clearance openings, the connecting shell (3) is internally threadedly connected to a connecting disk (4), a cross bar (5) is slidably connected to the connecting shell (3), the valve body (1) and the connecting disk (4) are both provided with clearance grooves (6) matching the cross bar (5), a transmission rod (7) is inserted into the connecting disk (4), the lower end of the transmission rod (7) is detachably connected to a valve (8), and the upper end of the transmission rod (7) is transmission-connected to a driving mechanism.

2. The electric flange butterfly valve for a drainage system according to claim 1, characterized in that, The driving mechanism comprises an extension frame (9) fixedly connected to the connecting plate (4), a driving motor (11) fixedly connected to the extension frame (9), a speed change gear set (10) being arranged at the output end of the driving motor (11), and the output end of the speed change gear set (10) being fixedly connected to a transmission rod (7).

3. The electric flange butterfly valve for a drainage system according to claim 1, characterized in that, The connecting shell (3) is cylindrical, and sealing gaskets (12) are provided at both upper and lower ends of the connecting shell (3). A stabilizing shaft (13) is provided at the lower end of the connecting shell (3), and the lower end of the stabilizing shaft (13) is rotatably connected to the inner wall of the lower end of the valve body (1).

4. The electric flange butterfly valve for a drainage system according to claim 2, characterized in that, The extension frame (9) is rotatably connected to a hand wheel (14), and the hand wheel (14) is fixedly connected to a driving rod, and the driving rod is transmission-connected to a transmission rod (7).

5. The electric flange butterfly valve for a drainage system according to claim 1, characterized in that The cross bar (5) is slidably connected to a vertically arranged insertion rod (15), and the connection shell (3) is provided with a slot matching the insertion rod (15).

6. An electric flange butterfly valve for a drainage system according to claim 1, characterized in that, A sealing sleeve (16) is provided on the lower surface of the connecting plate (4), and the sealing sleeve (16) and the inner wall of the connecting shell (3) are in interference fit.

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