A water flow control valve

Abstract

The utility model discloses a water flow control valve relates to valve technical field, including the valve body, the valve cover, the valve core and the valve stem that are connected, the top of valve cover is fixedly installed with the reduction gearbox through two L shape board, the inner top wall and the inner bottom wall of reduction gearbox all are equipped with the rotation hole. The water flow control valve of the present application passes through the transmission structure of "hand wheel - connecting shaft - rectangle column - pivot", and the valve stem and valve core action can be directly driven when rotating hand wheel, realizes the quick opening and closing of valve body, satisfies the efficient operation demand under the emergency scene, when needing to save the labor and fine adjustment flow, only needs to move down vertical slide frame, slide horizontal slide frame and unfasten the fixed completion, can drive the valve stem rotation through the meshing transmission of pinion and gear, and the operation step is simple, and the moment magnification effect is remarkable, and the dual demand of quick operation and fine adjustment is effectively taken into account, improves the scene adaptability and use convenience of valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a water flow control valve. Background Technology

[0002] Flow control valves are key devices for fluid on / off control and flow regulation in fields such as water conservancy projects, chemical production, municipal water supply, and agricultural irrigation. Driven by a valve stem, they directly determine the operating efficiency, operational safety, and resource utilization of the fluid system. With the diversification of fluid control requirements across various fields—such as the need for rapid fluid shut-off during emergency repairs, precise flow regulation in precision manufacturing, and reduced operational difficulty during routine maintenance—the adaptability of the flow control valve's drive structure and functions has become a core factor influencing its application effectiveness.

[0003] Existing flow control valves in agricultural irrigation scenarios struggle to simultaneously achieve both rapid valve opening and closing and effortless, precise flow regulation through simple operation. Some valves employ a direct-drive structure, which, while allowing the handwheel to directly actuate the valve stem and core for rapid opening or closing in emergencies such as irrigation system outages or pipeline maintenance, lacks torque amplification design. This makes it unsuitable for precise flow regulation based on crop growth stages. Therefore, we propose a new flow control valve to address this problem. Utility Model Content

[0004] The purpose of this application is to provide a water flow control valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a water flow control valve, comprising a valve body, a valve cover, a valve core, and a valve stem connected together. A reduction gearbox is fixedly installed on the top of the valve cover via two L-shaped plates. Rotary holes are provided on the inner top and bottom walls of the reduction gearbox. Rotary shafts are rotatably installed in the corresponding two rotary holes. A large gear and a small gear meshing with each other are fixedly sleeved on the two rotary shafts respectively. A lower rectangular column is fixedly installed at the bottom end of the rotating shaft connected to the large gear, and a lower rectangular groove is opened at the top end of the valve stem, with the bottom end of the lower rectangular column extending into the lower rectangular groove; A U-shaped plate is fixedly installed on the top of the gearbox, and a rotating mechanism and a connecting mechanism are slidably installed on the U-shaped plate. The connecting mechanism is installed in conjunction with two rotating shafts and the rotating mechanism.

[0006] Preferably, the rotating mechanism includes a horizontal sliding frame that is slidably sleeved on the horizontal side of the U-shaped plate. The inner top wall and inner bottom wall of the horizontal sliding frame are provided with connecting holes. A connecting shaft is rotatably installed in the two connecting holes. A handwheel is fixedly installed at the top of the connecting shaft. An upper rectangular groove is provided at the bottom of the connecting shaft.

[0007] Preferably, the top of the U-shaped plate has a slot, which corresponds to the position of the two rotating shafts.

[0008] Preferably, an upper limit plate is fixedly sleeved on the connecting shaft, the top and bottom of the upper limit plate contacting the inner top wall and inner bottom wall of the horizontal sliding frame respectively, and the side of the upper limit plate contacting the inner wall of the slot.

[0009] Preferably, the connecting mechanism includes vertical sliding frames that are slidably fitted onto the two vertical sides of the U-shaped plate, a movable plate is fixedly installed on the sides of the two vertical sliding frames that are close to each other, a middle rectangular groove is opened at the top of each of the two rotating shafts, an upper rectangular column is slidably installed in each of the two middle rectangular grooves, and the top of the upper rectangular column located in the middle extends into the upper rectangular groove.

[0010] Preferably, the top of the movable plate is provided with a movable hole, and the inner walls on both sides of the movable hole are provided with limit grooves. The two upper rectangular columns are fixedly sleeved with lower limit plates, and the sides of the lower limit plates extend into the two movable holes.

[0011] Preferably, a slide rod is fixedly installed on the inner top wall of the U-shaped plate and the gearbox, the movable plate is fixedly sleeved on the slide rod, a spring is sleeved on the slide rod, and the two ends of the spring are respectively fixedly installed on the sides of the gearbox and the movable plate that are close to each other.

[0012] Preferably, two fixed discs are fixedly sleeved on each of the two rotating shafts, with the upper fixed disc contacting the inner top wall of the gearbox and the lower fixed disc contacting the inner bottom wall of the gearbox.

[0013] In summary, the technical effects and advantages of this utility model are as follows: The water flow control valve of this application uses a transmission structure of "handwheel - connecting shaft - rectangular column - rotating shaft". Turning the handwheel can directly drive the valve stem and valve core to move, realizing the rapid opening and closing of the valve body and meeting the needs of efficient operation in emergency scenarios. When labor-saving and precise flow adjustment is required, simply move the vertical slide frame down, slide the horizontal slide frame and release to complete the fixation. The valve stem can be driven to rotate through the meshing transmission of the small gear and the large gear. The operation steps are simple and the torque amplification effect is significant. It effectively takes into account the dual needs of rapid operation and precise adjustment, and improves the valve's scenario adaptability and ease of use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A three-dimensional diagram of a water flow control valve; Figure 2 A three-dimensional cutaway view of the gearbox of a water flow control valve; Figure 3 A three-dimensional cutaway view of the gearbox and valve body of a water flow control valve; Figure 4 A first-person perspective view showing the connection between the U-shaped plate, the rotating mechanism, and the connecting mechanism; Figure 5 A second-view perspective perspective view showing the connection between the U-shaped plate, the rotating mechanism, and the connecting mechanism.

[0016] In the diagram: 1. Valve body; 2. Valve cover; 3. Gearbox; 4. Handwheel; 5. Valve stem; 6. Pinion; 7. Shaft; 8. Gear; 9. L-shaped plate; 10. Lower rectangular column; 11. Valve core; 12. U-shaped plate; 13. Moving plate; 14. Moving hole; 15. Upper rectangular column; 16. Lower limit plate; 17. Upper limit plate; 18. Vertical slide frame; 19. Slot; 20. Connecting shaft; 21. Horizontal slide frame; 22. Spring; 23. Slide rod; 24. Upper rectangular slot. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 The embodiments provided by this utility model are as follows: A water flow control valve includes a valve body 1, a valve cover 2, a valve core 11, and a valve stem 5 connected together. The connection method of the valve body 1, valve cover 2, valve core 11, and valve stem 5 in this application can refer to the connection method in the prior art announcement number CN223004438U, which is prior art and will not be described again here. The top of the valve cover 2 is fixedly installed with a reduction gear 3 by two L-shaped plates 9. Rotary holes are opened on the inner top wall and inner bottom wall of the reduction gear 3. Rotary shafts 7 are rotatably installed in the corresponding two rotating holes. A large gear 8 and a small gear 6 are respectively fixedly sleeved on the two rotating shafts 7. A lower rectangular post 10 is fixedly installed at the bottom end of the rotating shaft 7 connected to the large gear 8. A lower rectangular groove is opened at the top end of the valve stem 5, and the bottom end of the lower rectangular post 10 extends into the lower rectangular groove. A U-shaped plate 12 is fixedly installed on the top of the gearbox 3. A rotating mechanism and a connecting mechanism are slidably installed on the U-shaped plate 12. The connecting mechanism is installed in conjunction with two rotating shafts 7 and the rotating mechanism.

[0019] like Figure 4 As shown, the rotating mechanism includes a horizontal sliding frame 21 that is slidably sleeved on the horizontal side of the U-shaped plate 12. Connecting holes are provided on the inner top and bottom walls of the horizontal sliding frame 21. A connecting shaft 20 is rotatably installed in each of the two connecting holes. A handwheel 4 is fixedly installed at the top of the connecting shaft 20, and an upper rectangular groove 24 is provided at the bottom of the connecting shaft 20. Rotating the handwheel 4 will drive the connecting shaft 20 to rotate. The rotation of the connecting shaft 20 drives the middle upper rectangular column 15 to rotate via the upper rectangular groove 24. The rotation of the middle upper rectangular column 15 drives the middle rotating shaft 7 to rotate via the middle rectangular groove. The rotation of the middle rotating shaft 7 drives the lower rectangular column 10 to rotate. The rotation of the lower rectangular column 10 drives the valve stem 5 to rotate via the lower rectangular groove, thereby causing the valve core 11 to close or open the valve body 1.

[0020] like Figure 4 and Figure 5 As shown, the connecting mechanism includes vertical sliding frames 18 that are slidably fitted onto the two vertical sides of the U-shaped plate 12. A movable plate 13 is fixedly installed on the sides of the two vertical sliding frames 18 that are close to each other. A middle rectangular groove is opened at the top of each of the two rotating shafts 7. An upper rectangular column 15 is slidably installed in each of the two middle rectangular grooves. The top of the upper rectangular column 15 located in the middle extends into the upper rectangular groove 24. A movable hole 14 is opened at the top of the movable plate 13. Limiting grooves are opened on the inner walls of both sides of the movable hole 14. A lower limiting plate 16 is fixedly fitted onto each of the two upper rectangular columns 15. The side of the lower limiting plate 16 extends into the two movable holes 14. Moving the vertical slide frame 18 downwards will cause the moving plate 13 to move downwards. The movement of the moving plate 13 will compress the spring 22. At the same time, the movement of the moving plate 13 will cause the two lower limit plates 16 to move downwards. The movement of the two lower limit plates 16 will cause the two upper rectangular columns 15 to move downwards. The upper rectangular column 15 located in the middle will move out of the upper rectangular groove 24. At this time, the horizontal slide frame 21 can slide. Sliding the horizontal slide frame 21 will cause the upper limit plate 17 to separate from the inner wall of the groove 19. When the upper limit plate 17 contacts the other inner wall of the groove 19, the connecting shaft 20 will correspond to the position of the upper rectangular column 15 located at the edge. Releasing the vertical slide frame 18 will cause the upper rectangular column 15 located at the edge and the lower limit plate 16 located at the edge to move upwards under the force of the spring 22, so that the upper rectangular column 15 located at the edge enters the upper rectangular groove 24 and is fixed.

[0021] like Figure 4As shown, the top of the U-shaped plate 12 has a slot 19, which corresponds to the positions of the two rotating shafts 7. An upper limit plate 17 is fixedly sleeved on the connecting shaft 20. The top and bottom of the upper limit plate 17 contact the inner top wall and inner bottom wall of the horizontal sliding frame 21, respectively, and the side of the upper limit plate 17 contacts the inner wall of the slot 19. Sliding the horizontal sliding frame 21 causes the upper limit plate 17 to separate from the inner wall of the slot 19. When the upper limit plate 17 contacts the other inner wall of the slot 19, the connecting shaft 20 corresponds to the position of the upper rectangular column 15 located at the edge. By setting the upper limit plate 17, the bottom end of the connecting shaft 20 can be aligned with the two upper rectangular columns 15 respectively.

[0022] like Figure 5 As shown, a slide rod 23 is fixedly installed on the inner top wall of the U-shaped plate 12 and the gearbox 3. The moving plate 13 is fixedly sleeved on the slide rod 23. A spring 22 is sleeved on the slide rod 23. The two ends of the spring 22 are respectively fixedly installed on the sides of the gearbox 3 and the moving plate 13 that are close to each other. When the vertical slide frame 18 is released, the upper rectangular post 15 and the lower limit plate 16 located at the edge move upward under the force of the spring 22, so that the upper rectangular post 15 located at the edge enters the upper rectangular groove 24 and is fixed. When the upper rectangular post 15 at the edge does not correspond to the upper rectangular groove 24, the handwheel 4 can be turned to make the connecting shaft 20 rotate. The rotation of the connecting shaft 20 can make the upper rectangular post 15 correspond to the upper rectangular groove 24.

[0023] like Figure 2 As shown, two fixed discs are fixedly sleeved on each of the two rotating shafts 7. The upper fixed disc contacts the inner top wall of the gearbox 3, and the lower fixed disc contacts the inner bottom wall of the gearbox 3. The fixed discs limit the position of the two rotating shafts 7, allowing them to rotate but not move up and down.

[0024] Working principle: In use, if it is necessary to open or close the valve body 1, the handwheel 4 can be turned to drive the connecting shaft 20 to rotate. The rotation of the connecting shaft 20 drives the middle upper rectangular column 15 to rotate through the upper rectangular groove 24. The rotation of the middle upper rectangular column 15 drives the middle rotating shaft 7 to rotate through the middle rectangular groove. The rotation of the middle rotating shaft 7 drives the lower rectangular column 10 to rotate. The rotation of the lower rectangular column 10 drives the valve stem 5 to rotate through the lower rectangular groove, thereby causing the valve core 11 to close or open the valve body 1. When effortless and precise flow adjustment is required, the vertical slide frame 18 can be moved downward to drive the moving plate 13 to move downward. The movement of the moving plate 13 compresses the spring 22. At the same time, the movement of the moving plate 13 drives the two lower limit plates 16 to move downward. The movement of the two lower limit plates 16 drives the two upper rectangular columns 15 to move downward. The upper rectangular column 15 located in the middle moves out of the upper rectangular groove 24. At this time, the horizontal slide frame 21 can slide. The sliding horizontal slide frame 21 causes the upper limit plate 17 to separate from the inner wall of the slot 19. When the upper limit plate 17 contacts the other inner wall of the slot 19, the connecting shaft 20 corresponds to the position of the upper rectangular column 15 located at the edge. The vertical slide frame 18 is released, and under the action of the spring 22, the upper rectangular column 15 located at the edge and the lower limit plate 16 move upward, so that the upper rectangular column 15 located at the edge enters the upper rectangular slot 24 and completes the fixation. When the upper rectangular post 15 at the edge does not correspond to the upper rectangular groove 24, the handwheel 4 can be turned to make the connecting shaft 20 rotate. The rotation of the connecting shaft 20 can make the upper rectangular post 15 correspond to the upper rectangular groove 24. Finally, by continuing to rotate the connecting shaft 20, the upper rectangular column 15 and the rotating shaft 7 at the edge will be driven to rotate, which in turn causes the small gear 6 to rotate. The rotation of the small gear 6 drives the middle rotating shaft 7 to rotate through the large gear 8, which in turn causes the lower rectangular column 10 to rotate. The rotation of the lower rectangular column 10 drives the valve stem 5 to rotate through the lower rectangular groove, which in turn causes the valve core 11 to close or open the valve body 1.

[0025] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A water flow control valve, comprising a valve body (1), a valve cover (2), a valve core (11), and a valve stem (5) connected together, characterized in that: The top of the valve cover (2) is fixedly installed with a gearbox (3) by two L-shaped plates (9). The inner top wall and inner bottom wall of the gearbox (3) are provided with rotating holes. Rotating shafts (7) are rotatably installed in the corresponding two rotating holes. A large gear (8) and a small gear (6) are respectively fixedly sleeved on the two rotating shafts (7). A lower rectangular column (10) is fixedly installed at the bottom end of the rotating shaft (7) connected to the large gear (8), and a lower rectangular groove is opened at the top end of the valve stem (5), and the bottom end of the lower rectangular column (10) extends into the lower rectangular groove. A U-shaped plate (12) is fixedly installed on the top of the gearbox (3). A rotating mechanism and a connecting mechanism are slidably installed on the U-shaped plate (12). The connecting mechanism is installed in cooperation with two rotating shafts (7) and the rotating mechanism.

2. The water flow control valve according to claim 1, characterized in that: The rotating mechanism includes a horizontal sliding frame (21) that is slidably sleeved on the horizontal side of the U-shaped plate (12). The upper and lower inner walls of the horizontal sliding frame (21) are provided with connecting holes. A connecting shaft (20) is rotatably installed in the two connecting holes. A handwheel (4) is fixedly installed at the top of the connecting shaft (20). An upper rectangular groove (24) is provided at the bottom of the connecting shaft (20).

3. A water flow control valve according to claim 1, characterized in that: The top of the U-shaped plate (12) is provided with a slot (19), which corresponds to the position of the two rotating shafts (7).

4. A water flow control valve according to claim 2, characterized in that: An upper limit plate (17) is fixedly sleeved on the connecting shaft (20). The top and bottom of the upper limit plate (17) are in contact with the inner top wall and inner bottom wall of the horizontal slide frame (21), respectively, and the side of the upper limit plate (17) is in contact with the inner wall of the slot (19).

5. A water flow control valve according to claim 2, characterized in that: The connecting mechanism includes vertical sliding frames (18) that are slidably sleeved on the two vertical sides of the U-shaped plate (12). A movable plate (13) is fixedly installed on the side of the two vertical sliding frames (18) that are close to each other. A middle rectangular groove is opened at the top of each of the two rotating shafts (7). An upper rectangular column (15) is slidably installed in each of the two middle rectangular grooves. The top of the upper rectangular column (15) located in the middle extends into the upper rectangular groove (24).

6. A water flow control valve according to claim 5, characterized in that: The top of the movable plate (13) is provided with a movable hole (14), and a limit groove is provided on both sides of the inner wall of the movable hole (14). A lower limit plate (16) is fixedly sleeved on both upper rectangular columns (15), and the side of the lower limit plate (16) extends into the two movable holes (14).

7. A water flow control valve according to claim 5, characterized in that: The inner top wall of the U-shaped plate (12) and the gearbox (3) are fixedly installed with a slide rod (23). The moving plate (13) is fixedly sleeved on the slide rod (23). A spring (22) is sleeved on the slide rod (23). The two ends of the spring (22) are respectively fixedly installed on the sides of the gearbox (3) and the moving plate (13) that are close to each other.

8. A water flow control valve according to claim 1, characterized in that: Two fixed discs are fixedly sleeved on each of the two rotating shafts (7). The upper fixed disc contacts the inner top wall of the gearbox (3), and the lower fixed disc contacts the inner bottom wall of the gearbox (3).

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