Electric and manual dual-mode switching valve

Abstract

The utility model discloses an electric and manual dual-mode switching valve which comprises a screw valve body, a first connecting pipe and a second connecting pipe which are communicated with the screw valve body are fixedly connected to the side walls of the two ends of the screw valve body respectively, a connecting flange is arranged at the upper end of the screw valve body, a screw is rotationally connected into the screw valve body, and the first connecting pipe and the second connecting pipe are communicated with the screw valve body. And a valve core matched with the screw rod is arranged in the screw rod valve main body. The valve is reasonable in structure, the electric operation mode and the manual operation mode are arranged, and a convenient mode switching structure is arranged, so that the valve can normally and efficiently operate under different working conditions, the use flexibility and reliability of the valve are improved, the valve can be rapidly switched to the manual operation mode under the special conditions of power interruption and the like, and the safety of the valve is improved. And meanwhile, the unfolding length of the handle can be flexibly adjusted during manual operation, a force arm is increased by utilizing the lever principle, the force application strength of an operator is remarkably reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to an electric / manual dual-mode switching valve. Background Technology

[0002] In existing valve applications, electric valves and manual valves each have their advantages and limitations. Electric valves are characterized by convenient operation and a high degree of automation, enabling remote control and precise adjustment, and are widely used in large-scale industrial production systems and intelligent control systems. However, electric valves rely on a power supply; in the event of a power outage, circuit failure, or control system malfunction, the valves will fail to operate normally, seriously affecting the operation and safety of the pipeline system. Manual valves, on the other hand, are not limited by power conditions and can be opened and closed manually even in emergencies, exhibiting high reliability and stability.

[0003] In existing technologies, while traditional manual / electric integrated valves allow for flexible switching between manual and electric modes, the fixed diameter of the valve's rotary disc during manual operation results in a fixed lever arm length. This fixed lever arm requires significant physical exertion from the operator, leading to low efficiency, operator fatigue during prolonged operation, and an increased risk of operational errors. Furthermore, the fixed-length lever arm occupies considerable space when the valve is not in use, hindering compact equipment layout, transportation, and routine maintenance. Therefore, developing a valve that combines both electric and manual operation modes, with an adjustable lever length for manual operation, is crucial to solving these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-mode electric / manual switching valve. By setting both electric and manual operation modes and equipping it with a convenient mode-switching structure, the valve can operate normally and efficiently under various working conditions, improving its flexibility and reliability. In special circumstances such as power outages, it can quickly switch to manual operation mode to ensure normal valve operation. Simultaneously, during manual operation, the handle extension length can be flexibly adjusted, utilizing the lever principle to increase the lever arm, significantly reducing the force exerted by the operator and improving operational efficiency. After use, the handle can be retracted, greatly reducing the overall size of the valve, facilitating storage, transportation, and maintenance, thus comprehensively improving the valve's applicability, reliability, and economy in different application scenarios.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electric / manual dual-mode switching valve includes a screw valve body. A first connecting pipe and a second connecting pipe, communicating with the screw valve body, are fixedly connected to the two end side walls of the screw valve body, respectively. A connecting flange is provided at the upper end of the screw valve body. A screw is rotatably connected inside the screw valve body. A valve core that cooperates with the screw is provided inside the screw valve body. The screw passes through the connecting flange and is rotatably connected to it. A turntable is fixedly connected to the upper end of the screw. Four circumferentially evenly spaced sliding grooves are provided on the side wall of the turntable. Sliding rods are slidably connected to each of the four sliding grooves. Handles are fixedly connected to the ends of the sliding rods. An adjustment mechanism for adjusting the handles is provided on each sliding rod. The adjustment mechanism includes a groove on the upper end of the sliding rod, and a positioning block is slidably connected to the groove.

[0007] Preferably, the lower end of the positioning block is elastically connected to the inner wall of the groove on the same side by a spring.

[0008] Preferably, the turntable has a plurality of positioning holes that are circumferentially and equally spaced, and the positioning holes cooperate with the positioning blocks.

[0009] Preferably, a fixing plate is fixedly connected to the upper end of the connecting flange, a motor is fixedly connected to the side wall of the fixing plate, and a drive rod is fixedly connected to the end of the output shaft of the motor.

[0010] Preferably, both the drive rod and the screw are fixedly fitted with bevel gears, and the two bevel gears mesh with each other.

[0011] Preferably, each of the handles is fitted with an anti-slip sleeve, and the anti-slip sleeves are all made of rubber.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. By setting an adjustment mechanism and a unique handle length adjustment structure based on the lever principle, the operator can adjust the extended length of the handle according to actual operating needs. By increasing the lever arm length, the operating force required to open or close the valve is significantly reduced, greatly reducing the labor intensity of the operator. It is especially suitable for large valves or scenarios requiring frequent operation. Even during long-term operation, the operator is less prone to fatigue, effectively improving work efficiency and reducing the possibility of operational errors. After use, the handle can be folded, which can significantly reduce the overall size of the valve, making the valve easier to transport and store, reducing warehousing costs and transportation difficulties. At the same time, the retracted handle is less likely to collide or interfere with surrounding equipment, reducing the risk of equipment damage and facilitating daily maintenance and repair work.

[0014] 2. The valve has both electric and manual operation modes, which complement each other. When the power supply is normal, the electric mode can realize the automation and remote control of the valve, meeting the high-efficiency needs of modern industrial production and intelligent management. In the event of power outages, circuit failures or other emergencies, the manual mode can be put into use immediately to ensure that the valve can be opened, closed and adjusted normally, ensuring the continuous and stable operation of the fluid conveying system and avoiding production interruptions or safety hazards caused by valve failure. Attached Figure Description

[0015] Figure 1 This is a perspective view of the electric / manual dual-mode switching valve proposed in this utility model;

[0016] Figure 2 The above-view perspective view of the electric / manual dual-mode switching valve proposed in this utility model;

[0017] Figure 3 This is a front view of the electric / manual dual-mode switching valve proposed in this utility model;

[0018] Figure 4 This is a top view of the electric / manual dual-mode switching valve proposed in this utility model;

[0019] Figure 5 This is a top view of the rotary table of the electric / manual dual-mode switching valve proposed in this utility model;

[0020] Figure 6 This is a schematic diagram of the sliding rod structure of the electric / manual dual-mode switching valve proposed in this utility model.

[0021] In the diagram: 1. Screw valve body, 2. First connecting pipe, 3. Second connecting pipe, 4. Connecting flange, 5. Motor, 6. Turntable, 7. Handle, 8. Fixing plate, 9. Bevel gear, 10. Screw, 11. Drive rod, 12. Positioning hole, 13. Sliding rod, 14. Groove, 15. Spring, 16. Positioning block. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] Reference Figure 1-6The electric / manual dual-mode switching valve includes a screw valve body 1. The two end side walls of the screw valve body 1 are respectively fixedly connected to a first connecting pipe 2 and a second connecting pipe 3, both of which are connected to the inside of the screw valve body 1, serving as the connection interface between the valve and the external pipeline system. This ensures that fluid can flow smoothly into and out of the valve, meeting the installation and use requirements of different pipeline systems. A connecting flange 4 is provided at the upper end of the screw valve body 1. Through bolt connections or other methods, the screw valve body 1 can be firmly installed on pipelines, equipment, or other components, ensuring the stability of the valve during operation.

[0024] The screw valve body 1 is internally connected to a screw 10, and is equipped with a valve core that is compatible with the screw 10. During the rotation of the screw 10, the valve core is driven to move axially through the thread transmission principle, thereby realizing the opening and closing of the valve and the fine adjustment of the flow rate. The screw 10 passes upward through the connecting flange 4 and is rotatably connected to the connecting flange 4. The upper end of the screw 10 is fixedly installed with a turntable 6. The turntable 6 is a key component for manual operation, providing the operator with an operating surface that is easy to apply force to.

[0025] Four circumferentially spaced grooves are evenly distributed on the side wall of the turntable 6. A sliding rod 13 is slidably connected in each groove, and a handle 7 is fixedly connected to the end of the sliding rod 13. By pulling or pushing the handle 7, the operator can make the sliding rod 13 slide freely in the groove, thereby flexibly adjusting the unfolded length of the handle 7. To ensure that the handle 7 remains stable in the adjusted position, an adjustment mechanism is provided on the sliding rod 13. The adjustment mechanism includes a groove 14 formed at the upper end of the sliding rod 13. A positioning block 16 is slidably connected in the groove 14. The lower end of the positioning block 16 is connected to the inner wall of the groove 14 on the same side by a spring 1. 5. Elastic connection: In its natural state, the spring 15 pushes the positioning block 16 upward. At the same time, the turntable 6 has multiple positioning holes 12 evenly distributed in a circumferential direction. The positioning holes 12 and the positioning block 16 are precisely matched. When the length of the handle 7 needs to be adjusted, the operator squeezes the positioning block 16, compresses the spring 15 to disengage it from the positioning hole 12, and then the handle 7 can slide freely. After the handle 7 is adjusted to the appropriate unfolded length, under the elastic force of the spring 15, the positioning block 16 is reinserted into the corresponding positioning hole 12, and the handle 7 is firmly fixed, realizing the adjustment of the lever arm length, making it easier to manually operate the valve.

[0026] In the electric operation mode, a fixing plate 8 is fixedly connected to the upper end of the connecting flange 4. A motor 5 is installed on the side wall of the fixing plate 8, and a drive rod 11 is fixedly connected to the end of the output shaft of the motor 5. Bevel gears 9 are fixedly sleeved on the drive rod 11 and the screw 10, respectively. The two bevel gears 9 mesh with each other. When the motor 5 is powered on and started, the output shaft drives the drive rod 11 to rotate. Through the transmission of the bevel gears 9, the power of the motor 5 is transmitted to the screw 10, realizing the movement of the valve core inside the screw valve body 1, and completing the electric opening, closing or flow regulation operation of the valve.

[0027] In addition, to improve the comfort and safety of operators when manually operating the valve, each handle 7 is fitted with an anti-slip sleeve. The anti-slip sleeve is made of rubber, which has good anti-slip properties and can effectively increase the friction between the hand and the handle 7, preventing the operator's hand from slipping when manually operating the valve, and ensuring a safe and stable operation.

[0028] When this utility model is in use, if the system power supply is normal and the valve needs to be operated in electric mode, the motor 5 is first connected to the power circuit. The operator issues a command through the control system, the motor 5 is powered on and starts, and its output shaft starts to rotate. The output shaft drives the drive rod 11 to rotate synchronously. Since the drive rod 11 and the bevel gear 9 on the screw 10 mesh with each other, the rotation of the drive rod 11 is transmitted to the screw 10 through the transmission of the bevel gear 9. The screw 10 starts to rotate under the drive of the bevel gear 9. Using the thread transmission principle, the valve core in the screw valve body 1 moves axially.

[0029] When encountering situations where the electric operation mode cannot be used due to power outages, circuit failures, motor damage, or other reasons, or when manual operation is required under specific working conditions, the operator first prepares to adjust the handle length by squeezing the positioning block 16 to overcome the elastic force of the spring 15, causing the positioning block 16 to disengage from the positioning hole 12 and releasing the fixation restriction on the handle 7. Then, according to the actual operation requirements and on-site space conditions, the handle 7 is slid along the slide groove. If the valve requires a large operating force, the handle 7 can be pulled outward to increase the handle's extended length, thereby increasing the operating lever arm and achieving the purpose of saving effort. If the operating space is limited or the required operating force is small, the handle 7 can be slid inward to retract to adapt to the narrow operating space. After the handle 7 is adjusted to the appropriate extended length, under the action of the spring 15, the positioning block 16 is reinserted into the corresponding positioning hole 12, firmly fixing the handle 7 in the adjusted position.

[0030] The operator holds the handle 7 and applies rotational force to rotate the turntable 6. The turntable 6 drives the screw 10 to rotate synchronously, which in turn drives the valve core inside the screw valve body 1 to move, realizing the manual opening, closing or flow regulation of the valve. After the operation is completed, in order to reduce the space occupied by the valve and facilitate subsequent maintenance and storage, the positioning block 16 is pulled up again to retract the handle 7 to the shortest length. The positioning block 16 is then released to allow it to be reinserted into the positioning hole 12, completing the storage of the handle.

[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 electric / manual dual-mode switching valve, comprising a screw valve body (1), characterized in that, The screw valve body (1) has a first connecting pipe (2) and a second connecting pipe (3) fixedly connected to its two end side walls respectively. The upper end of the screw valve body (1) is provided with a connecting flange (4). The screw valve body (1) is rotatably connected with a screw (10). The screw valve body (1) is provided with a valve core that cooperates with the screw (10). The screw (10) passes through the connecting flange (4) and is rotatably connected to it. The upper end of the screw (10) is fixedly connected with a turntable (6). The side wall of the turntable (6) is provided with four circumferentially evenly spaced sliding grooves. Each of the four sliding grooves is slidably connected with a sliding rod (13). The ends of the multiple sliding rods (13) are fixedly connected with handles (7). The sliding rods (13) are provided with an adjustment mechanism for adjusting the handles (7). The adjustment mechanism includes a groove (14) opened at the upper end of the sliding rods (13). A positioning block (16) is slidably connected in the groove (14).

2. The electric / manual dual-mode switching valve according to claim 1, characterized in that, The lower end of the positioning block (16) is elastically connected to the inner wall of the groove (14) on the same side by a spring (15).

3. The electric / manual dual-mode switching valve according to claim 2, characterized in that, The turntable (6) has multiple positioning holes (12) that are evenly spaced in the circumferential direction. The positioning holes (12) cooperate with the positioning blocks (16).

4. The electric / manual dual-mode switching valve according to claim 3, characterized in that, A fixing plate (8) is fixedly connected to the upper end of the connecting flange (4), and a motor (5) is fixedly connected to the side wall of the fixing plate (8). A drive rod (11) is fixedly connected to the end of the output shaft of the motor (5).

5. The electric / manual dual-mode switching valve according to claim 4, characterized in that, Both the drive rod (11) and the screw (10) are fixedly fitted with bevel gears (9), and the two bevel gears (9) mesh with each other.

6. The electric / manual dual-mode switching valve according to claim 5, characterized in that, Each of the handles (7) is covered with an anti-slip sleeve, and the anti-slip sleeve is made of rubber.

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