Operation switching butterfly valve

Abstract

The utility model discloses an operation switching butterfly valve, belongs to the technical field of valves, and solves the problem that the electric control mode and the manual control mode of the butterfly valve have respective advantages, but the control end of the butterfly valve is electrically controlled or manually controlled, so that the electric control mode and the manual control mode cannot be combined for switching operation. Comprising a valve body, a valve rod rotationally connected into the valve body, and a transmission switching assembly in transmission connection with the valve rod. When an operator needs to adjust the flow of fluid in the butterfly valve, the electric control mode or the manual mode can be switched according to the requirement of the operator for the use environment, under the electric control condition, the servo motor drives the valve rod to rotate, the rotation of the valve plate in the valve body can be completed, and the operation is convenient. And under the manual condition, only the servo motor needs to be in a power-off state, the first inclined transmission disc and the second inclined transmission disc are kept in a transmission connection state, the valve rod can be driven to rotate through rotation of the grip, then the electric valve plate is driven to rotate, and two control modes and switching of the two control modes are adapted.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an operating switching butterfly valve. Background Technology

[0002] A butterfly valve is a fluid control device used to regulate or cut off the flow of media. It consists of a rotating disc-shaped valve plate connected to a valve stem, which rotates 90 degrees during operation to open or close the fluid passage. Butterfly valves are compact, lightweight, easy to install and maintain, and widely used in various industries such as food, pharmaceuticals, chemicals, petroleum, and water treatment to control various types of fluids. When opening, the valve plate gradually becomes parallel to the fluid passage, reducing resistance and providing minimal flow restriction; when closing, the valve plate rotates back to a vertical position, engaging with the valve seat to close the flow path. Butterfly valves offer precise control, allowing for rapid on / off switching, and can be configured for manual, electric, pneumatic, or hydraulic control as needed. Depending on the application, butterfly valves can be manufactured from different materials, such as stainless steel, cast iron, and plastics. Some types can also be equipped with soft or metal seals to meet specific sealing requirements under certain operating conditions.

[0003] When it comes to controlling butterfly valves, both electric and manual control methods have their advantages. However, in most cases, the control end of a butterfly valve is either electric or manual, and it is not possible to switch between the two in combination.

[0004] Therefore, an operating switching butterfly valve is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an operating switching butterfly valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An operating switching butterfly valve includes a valve body, a valve stem rotatably connected to the valve body, and a transmission switching assembly driven by the valve stem. It also includes a servo motor and a handle. The servo motor and the handle are respectively driven by two input ends of the transmission switching assembly. The transmission switching assembly controls the output shaft of the servo motor to always be driven by the valve stem and controls whether the handle is driven by the valve stem.

[0008] Preferably, the transmission switching assembly includes a horizontally arranged transmission shaft, a first inclined transmission disk and a second inclined transmission disk. The second inclined transmission disk is fixedly connected to the valve stem, the first inclined transmission disk is slidably connected to the transmission shaft and can rotate with the transmission shaft, and the first inclined transmission disk and the second inclined transmission disk can engage in frictional transmission.

[0009] Preferably, both the first inclined transmission disk and the second inclined transmission disk are frustum-shaped, and the inclined surfaces of both are set at 45°, and the roughness of the mating inclined surfaces of both is greater than 30.

[0010] Preferably, the cross-section of the drive shaft is quadrilateral, and its two parallel surfaces are recessed inward to form guide grooves of equal length. The inclined drive disc has a through groove for the drive shaft to pass through.

[0011] Preferably, the guide groove has a guide slope at its edge.

[0012] Preferably, it further includes a transmission housing fixedly connected to and communicating with the valve body, and a drive housing communicating with the transmission housing. The transmission switching assembly is disposed in the transmission housing and the drive housing, and the servo motor is fixedly connected to the top surface of the transmission housing.

[0013] Preferably, electromagnet one and electromagnet two are fixedly connected to both ends inside the drive housing, and electromagnet one and electromagnet two are connected in parallel through a common switching switch. The other end of the switching switch is connected to electricity, and the inclined transmission disk one is made of metal.

[0014] Preferably, it further includes a valve plate, which is fixedly connected to the lower end of the valve stem and located within the valve body.

[0015] This utility model has the following beneficial effects:

[0016] The key feature of this invention is that operators can flexibly switch between electronic control and manual operation modes according to the specific requirements of their working environment. In electronic control mode, the power output of the servo motor drives the valve stem to rotate, thereby achieving precise rotation of the valve plate inside the valve body to regulate fluid flow. When manual operation mode is selected, the operator only needs to disconnect the servo motor, keeping the first and second inclined transmission discs in the transmission connection state, and directly drive the valve stem by rotating the manual handle—thus causing the valve plate to rotate, manually adjusting the flow. This dual-mode design not only expands the applicability of the butterfly valve but also facilitates the flexible selection of the most suitable control method according to different situations, simplifies the operation process, and improves the efficiency and convenience of using the butterfly valve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the transmission switching component in this utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the transmission switching component in this utility model. Figure 2 ;

[0020] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0021] 1. Valve body; 2. Valve plate; 3. Valve stem; 4. Transmission housing; 5. Servo motor; 6. Drive housing; 7. Handle; 8. Transmission shaft; 9. Limiting plate; 10. Inclined transmission plate one; 11. Inclined transmission plate two; 12. Guide groove; 13. Guide slope. Detailed Implementation

[0022] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] An operating switching butterfly valve, such as Figure 1 As shown, it includes a valve body 1, a valve stem 3 rotatably connected to the valve body 1, a transmission switching assembly that is pulsatically connected to the valve stem 3, and a valve plate 2. The valve plate 2 is fixedly connected to the lower end of the valve stem 3 and is located in the valve body 1.

[0024] like Figure 2 and 3 As shown, the transmission switching assembly includes a horizontally arranged transmission shaft 8, a first inclined transmission disc 10, and a second inclined transmission disc 11. The second inclined transmission disc 11 is fixedly connected to the valve stem 3. The first inclined transmission disc 10 is slidably connected to the transmission shaft 8 and can rotate with the transmission shaft 8. The first inclined transmission disc 10 and the second inclined transmission disc 11 can engage in friction transmission. Both the first inclined transmission disc 10 and the second inclined transmission disc 11 are frustum-shaped, and both of their inclined surfaces are set at 45°. The roughness of the contacting inclined surfaces of both is greater than 30. Both the first inclined transmission disc 10 and the second inclined transmission disc 11 are made of metal, and a rubber layer with anti-slip texture is bonded to the inclined surfaces of both.

[0025] like Figure 4 As shown, the cross-section of the drive shaft 8 is quadrilateral, and its two parallel surfaces are recessed inward to form a guide groove 12 of the same length. The inclined drive disc 10 has a through groove for the drive shaft 8 to pass through. The edge of the guide groove 12 has a guide slope 13. The end of the drive shaft 8 facing the inclined drive disc 11 is fixedly connected to a limiting disc 9 with a cross-sectional area larger than that of the drive shaft 8. The limiting disc 9 is specifically disc-shaped.

[0026] It also includes a transmission housing 4 fixedly connected to and communicating with the valve body 1, a drive housing 6 communicating with the transmission housing 4, a servo motor 5, and a handle 7. The transmission switching assembly is disposed within the transmission housing 4 and the drive housing 6. The servo motor 5 is fixedly connected to the top surface of the transmission housing 4. The servo motor 5 and the handle 7 are respectively connected to the two input ends of the transmission switching assembly. Specifically, the output shaft of the servo motor 5 is connected to the upper end of the valve stem 3 via a coupling, while the handle 7 is fixedly connected to one end of the transmission shaft 8. The transmission switching assembly controls whether the output shaft of the servo motor 5 is always connected to the valve stem 3 and controls whether the handle 7 is connected to the valve stem 3. The specific control method is as follows.

[0027] Electromagnet 1 and Electromagnet 2 are fixedly connected to both ends inside the drive housing 6, and Electromagnet 1 and Electromagnet 2 are connected in parallel through a common switching switch. The other end of the switching switch is connected to electricity. The switching switch includes one input end and three output ends. The input end is connected to the power supply, the two output ends are connected to the circuits where Electromagnet 1 and Electromagnet 2 are located, respectively, and the last output end is disconnected.

[0028] When the operator needs to rotate the valve plate 2 by means of electrical control, the operator only needs to operate the switch to energize the electromagnet, which will generate a magnetic force on the inclined transmission disk 10, causing the inclined transmission disk 10 to move on the transmission shaft 8 and away from the inclined transmission disk 2 11. Then, by controlling the switch to de-energize the electromagnet, the inclined transmission disk 10 will always remain in a state of being disengaged from the inclined transmission disk 2 11.

[0029] Next, the servo motor 5 is controlled, and the servo motor 5 drives its output shaft to rotate, and drives the valve stem 3 to rotate through the coupling. When the valve stem 3 rotates, it can smoothly drive the valve plate 2 to rotate in the valve body 1.

[0030] When the operator needs to manually adjust the valve plate 2, they only need to control the switch to energize the electromagnet 2, causing it to generate magnetic force. This causes the inclined transmission disc 10 to move towards the inclined transmission disc 11 until it is restricted by the limit disc 9 and cannot move further, and it comes into contact with the inclined surface of the inclined transmission disc 11. At this point, the operator only needs to turn the handle 7 to drive the transmission shaft 8 to rotate. When the transmission shaft 8 rotates, it can drive the inclined transmission disc 10 to rotate through the guide groove 12 and the quadrilateral cross section of the transmission shaft 8. When the inclined transmission disc 10 rotates, it comes into contact with the inclined surface of the inclined transmission disc 11, and the friction transmission ratio between the two is increased by the rubber layer. Therefore, the inclined transmission disc 11 can also drive the valve stem 3 to rotate, thus completing the rotation adjustment of the valve plate 2. After the adjustment is completed, the operator only needs to switch back to energize the electromagnet 1 to disengage the inclined transmission disc 10 from the inclined transmission disc 11.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An operating switching butterfly valve, characterized in that, The device includes a valve body (1), a valve stem (3) rotatably connected within the valve body (1), and a transmission switching assembly that is driven by the valve stem (3). It also includes a servo motor (5) and a grip (7). The servo motor (5) and the grip (7) are driven by the two input ends of the transmission switching assembly, respectively. The transmission switching assembly controls the output shaft of the servo motor (5) to always be driven by the valve stem (3) and controls whether the grip (7) is driven by the valve stem (3).

2. The operating switching butterfly valve according to claim 1, characterized in that, The transmission switching assembly includes a horizontally arranged transmission shaft (8), a first inclined transmission disk (10), and a second inclined transmission disk (11). The second inclined transmission disk (11) is fixedly connected to the valve stem (3). The first inclined transmission disk (10) is slidably connected to the transmission shaft (8) and can rotate with the transmission shaft (8). The first inclined transmission disk (10) and the second inclined transmission disk (11) can engage in frictional transmission.

3. The operating switching butterfly valve according to claim 2, characterized in that, Both the first inclined transmission disk (10) and the second inclined transmission disk (11) are frustum-shaped, and both have inclined surfaces set at 45°. The roughness of the contacting inclined surfaces of both is greater than 30.

4. The operating switching butterfly valve according to claim 2, characterized in that, The cross section of the drive shaft (8) is quadrilateral, and its two parallel surfaces are recessed inward to form a guide groove (12) of the same length as it. The inclined drive disc (10) has a through groove for the drive shaft (8) to pass through.

5. The operating switching butterfly valve according to claim 4, characterized in that, The guide groove (12) has a guide slope (13) at its edge.

6. The operating switching butterfly valve according to claim 2, characterized in that, It also includes a transmission housing (4) fixedly connected to and communicating with the valve body (1), and a drive housing (6) communicating with the transmission housing (4). The transmission switching assembly is disposed in the transmission housing (4) and the drive housing (6). The servo motor (5) is fixedly connected to the top surface of the transmission housing (4).

7. The operating switching butterfly valve according to claim 6, characterized in that, Electromagnet one and electromagnet two are fixedly connected to the two ends inside the drive housing (6), and electromagnet one and electromagnet two are connected in parallel through a common switching switch. The other end of the switching switch is connected to electricity. The inclined transmission disk one (10) is made of metal.

8. The operating switching butterfly valve according to claim 1, characterized in that, It also includes a valve plate (2), which is fixedly connected to the lower end of the valve stem (3) and located in the valve body (1).

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