Butterfly valve with locking function

Abstract

The utility model discloses a butterfly valve with locking function relates to butterfly valve technical field, specifically is a butterfly valve with locking function, including the valve body, the upper surface of valve body is provided with the limit seat, and the inside rotation of limit seat is connected with the rotary axle rod, and the upper end of rotary axle rod is provided with the adjusting disc, and the upper surface of adjusting disc is provided with the force bar, and the inside of adjusting disc is provided with the adjusting storehouse, and the inside of adjusting storehouse is provided with the support slide rod, and the outer surface sliding connection of support slide rod has the connecting plate, and the outer surface of connecting plate is provided with the first spring. This butterfly valve with locking function cooperated setting of rotary axle rod, limit seat, adjusting disc, force bar, support slide rod, connecting plate, first spring, limit lever, control piece, control rope, second spring, guide roller and limit hole makes this butterfly valve with locking function have increased butterfly valve self -locking function, improves the practicality effect of butterfly valve.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a butterfly valve with a locking function. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by its closing element (valve disc or butterfly plate) being a circular plate that rotates around a valve shaft to open and close. Butterfly valves can control the flow of various types of fluids, including air, water, steam, various corrosive media, mud, oil, liquid metals, and radioactive media. In pipelines, they primarily function as shut-off and throttling devices.

[0003] Existing butterfly valves rarely have a locking function. The butterfly valve and the butterfly rod themselves do not have self-locking ability. During long-term use, the connection between the two often becomes loose due to external forces, which affects the normal use of the entire butterfly valve. At the same time, the sealing performance of existing butterfly valves is poor. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a butterfly valve with a locking function, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a butterfly valve with a locking function, comprising a valve body, a limiting seat on the upper surface of the valve body, a rotating shaft rotatably connected inside the limiting seat, an adjusting disc at the upper end of the rotating shaft, a force-applying rod on the upper surface of the adjusting disc, an adjusting chamber inside the adjusting disc, a supporting slide rod inside the adjusting chamber, a connecting plate slidably connected to the outer surface of the supporting slide rod, a first spring on the outer surface of the connecting plate, the end of the first spring away from the connecting plate being disposed on the inner wall of the adjusting chamber, the first spring being sleeved on the outer surface of the supporting slide rod, a limiting lever on the outer surface of the connecting plate, a connecting through hole inside the adjusting chamber, and the limiting lever slidably connected inside the connecting through hole.

[0008] Optionally, the force-adding rod has an adjustment groove inside, a limit slide rod is provided inside the adjustment groove, a control plate is slidably connected to the outer surface of the limit slide rod, a second spring is provided on the outer surface of the control plate, a control rope is provided at the end of the control plate away from the second spring, and the end of the control rope away from the control plate is provided on the upper surface of the connecting plate.

[0009] Optionally, the force bar has a support shaft inside, and a guide roller is rotatably connected to the outer surface of the support shaft, with the control rope abutting against the outer surface of the guide roller.

[0010] Optionally, the upper surface of the adjustment disc is provided with limiting holes, and the number of limiting holes is several, which are evenly distributed inside the adjustment disc, and the position of the limiting holes is adapted to the position of the limiting lever.

[0011] Optionally, the connecting plate has two upper limit levers, two support slides, and two first springs, which are symmetrical to each other.

[0012] Optionally, the inner wall of the valve body is provided with an arc-shaped fixing plate, and the outer surface of the arc-shaped fixing plate is provided with a rubber sealing tube, and the inside of the rubber sealing tube is provided with an exhaust hole.

[0013] Optionally, a valve plate is provided at the end of the rotating shaft away from the adjusting disc, and a rotating shaft is provided at the end of the valve plate away from the rotating shaft, with the rotating shaft rotatably connected inside the valve body.

[0014] Optionally, the number of the arc-shaped fixing plate and the rubber sealing tube is two, and they are symmetrical about the center of the rotating shaft.

[0015] This utility model provides a butterfly valve with a locking function, which has the following beneficial effects:

[0016] 1. This butterfly valve with a locking function, through the coordinated arrangement of a rotating shaft, a limit seat, an adjusting disc, a force-adding rod, a support slide rod, a connecting plate, a first spring, a limit lever, a control plate, a control rope, a second spring, a guide roller, and a limit hole, enables the butterfly valve with a locking function to have an added self-locking function and improve the practicality of the butterfly valve.

[0017] 2. This butterfly valve with a locking function, through the coordinated arrangement of an arc-shaped fixing plate, a rubber sealing tube, and a valve plate, achieves an improved sealing performance. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the force-adding rod, adjusting plate, and limiting seat of this utility model;

[0020] Figure 3 This is a top view of the limiting seat of this utility model;

[0021] Figure 4 This is a front view structural diagram of the present invention;

[0022] Figure 5 This is a side view of the arc-shaped fixing plate of this utility model.

[0023] Figure 6This is a rear view structural schematic diagram of the present invention;

[0024] Figure 7 This is a side view of the structure of this utility model.

[0025] In the diagram: 1. Valve body; 2. Limit seat; 3. Rotating shaft; 4. Adjusting disc; 5. Force rod; 6. Support slide bar; 7. Connecting plate; 8. First spring; 9. Limiting lever; 10. Control plate; 11. Second spring; 12. Control rope; 13. Guide roller; 14. Limiting hole; 15. Arc-shaped fixing plate; 16. Rubber sealing tube; 17. Exhaust hole; 18. Valve plate. Detailed Implementation

[0026] 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.

[0027] Example

[0028] A butterfly valve with a locking function includes a valve body 1. A limit seat 2 is provided on the upper surface of the valve body 1. A rotating shaft 3 is rotatably connected inside the limit seat 2. An adjusting disc 4 is provided at the upper end of the rotating shaft 3. A force-applying rod 5 is provided on the upper surface of the adjusting disc 4. An adjusting chamber is provided inside the adjusting chamber. A support slide rod 6 is provided inside the adjusting chamber. A connecting plate 7 is slidably connected to the outer surface of the support slide rod 6. A first spring 8 is provided on the outer surface of the connecting plate 7. The end of the first spring 8 away from the connecting plate 7 is located on the inner wall of the adjusting chamber and is sleeved on the outer surface of the support slide rod 6. A limit locking rod 9 is provided on the outer surface of the connecting plate 7. A connecting through hole is provided inside the adjusting chamber. The limit locking rod 9 is slidably connected inside the connecting through hole. An adjusting groove is provided inside the force-applying rod 5. A limit slide rod is provided inside the adjusting groove. A control piece 10 is slidably connected to the outer surface of the limit slide rod. A second spring 11 is provided on the outer surface of the control piece 10. A control rope 12 is provided at the end of the control piece 10 away from the second spring 11. The end of the control rope 12 away from the control plate 10 is set on the upper surface of the connecting plate 7. The inside of the force rod 5 is provided with a support shaft, and the outer surface of the support shaft is rotatably connected to the guide roller 13. The control rope 12 abuts against the outer surface of the guide roller 13. The upper surface of the adjusting plate 4 is provided with limit holes 14. There are several limit holes 14, which are evenly distributed inside the adjusting plate 4. The position of the limit holes 14 is adapted to the position of the limit lever 9. There are two limit levers 9, support slide rods 6 and first springs 8 on the connecting plate 7. They are symmetrical to each other. The inner wall of the valve body 1 is provided with an arc-shaped fixing plate 15. The outer surface of the arc-shaped fixing plate 15 is provided with a rubber sealing tube 16. The inside of the rubber sealing tube 16 is provided with an exhaust hole 17. The end of the rotating shaft 3 away from the adjusting plate 4 is provided with a valve plate 18. The end of the valve plate 18 away from the rotating shaft 3 is provided with a rotating shaft. The rotating shaft is rotatably connected inside the valve body 1. There are two arc-shaped fixing plates 15 and rubber sealing tubes 16. They are symmetrical about the center of the rotating shaft 3.

[0029] To enhance the self-locking function and practicality of the butterfly valve with a locking function, and to improve its sealing performance, the following is attached: Figure 1-6As shown, this application adopts the following structure: through the coordinated arrangement of rotating shaft 3, limiting seat 2, adjusting disc 4, force-applying rod 5, supporting slide rod 6, connecting plate 7, first spring 8, limiting latch 9, control plate 10, control rope 12, second spring 11, guide roller 13, limiting hole 14, arc-shaped fixing plate 15, rubber sealing tube 16, and valve plate 18, during use, the hand holds the force-applying rod 5, and simultaneously the finger moves the control plate 10, squeezing the second spring 11 and pulling the control rope 12, thereby moving the connecting plate 7, causing the connecting plate 7 to slide along the supporting slide rod 6, stretching the first spring 8, and causing the limiting latch 9 to disengage from the corresponding limiting hole 14. Subsequently, rotating the force-applying rod 5, thereby driving the adjusting disc 4, rotating shaft 3, and valve plate 18 to rotate. When the valve plate 18 rotates to the corresponding angle, the control plate 10 is released. 0. Under the elastic force of the first spring 8, the connecting plate 7 and the limiting rod 9 are reset, and the limiting rod 9 is locked into the corresponding limiting hole 14, fixing the position of the adjusting plate 4 and the rotating shaft 3, thereby fixing the position of the valve plate 18 and completing the self-locking. At the same time, under the elastic force of the second spring 11, the control plate 10 is reset. When the butterfly valve is in the closed state, the valve plate 18 and the valve body 1 are in a vertical rotation state. The valve plate 18 is tightly attached to the rubber sealing tube 16. At the same time, the valve plate 18 presses the rubber sealing tube 16, and the gas inside the rubber sealing tube 16 is discharged from the exhaust hole 17, thus forming a double-layer effect. This enables the butterfly valve with the locking function to have the effect of increasing the self-locking function of the butterfly valve, improving the practicality of the butterfly valve, and improving the sealing performance of the butterfly valve with the locking function.

[0030] 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. A butterfly valve with a locking function, comprising a valve body, characterized in that: The upper surface of the valve body is provided with a limit seat, and a rotating shaft is rotatably connected inside the limit seat. An adjusting plate is provided at the upper end of the rotating shaft. A force-applying rod is provided on the upper surface of the adjusting plate. An adjusting chamber is opened inside the adjusting chamber. A supporting slide rod is provided inside the adjusting chamber. A connecting plate is slidably connected to the outer surface of the supporting slide rod. A first spring is provided on the outer surface of the connecting plate. The end of the first spring away from the connecting plate is set on the inner wall of the adjusting chamber. The first spring is sleeved on the outer surface of the supporting slide rod. A limit locking rod is provided on the outer surface of the connecting plate. A connecting through hole is opened inside the adjusting chamber. The limit locking rod is slidably connected inside the connecting through hole.

2. A butterfly valve with a locking function according to claim 1, characterized in that: The force-adding rod has an adjustment groove inside, and a limit slide rod is set inside the adjustment groove. A control plate is slidably connected to the outer surface of the limit slide rod. A second spring is set on the outer surface of the control plate. A control rope is set at the end of the control plate away from the second spring. The end of the control rope away from the control plate is set on the upper surface of the connecting plate.

3. A butterfly valve with a locking function according to claim 1, characterized in that: The force-adding rod has a support shaft inside, and a guide roller is rotatably connected to the outer surface of the support shaft. The control rope abuts against the outer surface of the guide roller.

4. A butterfly valve with a locking function according to claim 1, characterized in that: The upper surface of the adjustment disc has several limit holes, which are evenly distributed inside the adjustment disc, and the positions of the limit holes are adapted to the positions of the limit levers.

5. A butterfly valve with a locking function according to claim 1, characterized in that: The connecting plate has two upper limit levers, two support slides, and two first springs, which are symmetrical to each other.

6. A butterfly valve with a locking function according to claim 1, characterized in that: The inner wall of the valve body is provided with an arc-shaped fixing plate, and the outer surface of the arc-shaped fixing plate is provided with a rubber sealing tube, and the inside of the rubber sealing tube is provided with an exhaust hole.

7. A butterfly valve with a locking function according to claim 1, characterized in that: A valve plate is provided at the end of the rotating shaft away from the adjusting disc, and a rotating shaft is provided at the end of the valve plate away from the rotating shaft. The rotating shaft is rotatably connected to the inside of the valve body.

8. A butterfly valve with a locking function according to claim 6, characterized in that: There are two arc-shaped fixing plates and rubber sealing tubes, which are symmetrical about the center of the rotating shaft.

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