A safety valve with easy adjustment

Abstract

The utility model relates to safety valve technical field, and disclose a kind of safety valve of being convenient for adjustment, including valve seat, the top of valve seat is connected with valve body by bolt, the inside of valve seat is provided with pressure relief port, the top of valve seat is connected with connecting rod slidingly, the bottom end of connecting rod is connected with valve core.The utility model rotates and drives rotating lever and rotating column to rotate by hand wheel, arc slide groove on rotating column is pushed to move cylinder along valve body inner wall up and down by slide bar, cylinder moves and drives sleeve to move along sleeve rod outer wall, cylinder compresses or relaxes spring one simultaneously, the elasticity of spring one is transmitted to valve core by connecting plate and connecting rod, adjusts the sealing pressure of valve core to pressure relief port, i.e. safety valve opening threshold, without opening valve body, the elasticity of spring one can be adjusted by hand wheel, change safety valve opening pressure, solve the trouble of traditional regulation needs to disassemble valve body, avoid the decline of sealing property.

Description

Technical Field

[0001] This utility model relates to the field of safety valve technology, specifically to a safety valve that is easy to adjust. Background Technology

[0002] A safety valve is a special valve whose opening and closing element is normally closed under the action of external force. When the pressure of the medium in the equipment or pipeline rises above the specified value, it prevents the pressure of the medium in the pipeline or equipment from exceeding the specified value by discharging the medium to the outside of the system. Safety valves belong to the category of automatic valves and are mainly used on boilers, pressure vessels and pipelines to control the pressure to not exceed the specified value, playing an important protective role for personal safety and equipment operation.

[0003] Existing safety valves have fixed threshold values, and the pressure value can be changed by adjusting the adjusting screw. However, the adjusting screw is usually located inside the valve body, and the valve body needs to be opened for adjustment, which is very troublesome and can easily reduce the sealing performance of the valve body and shorten its service life. Therefore, a safety valve that is easy to adjust is proposed to solve the above-mentioned problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a safety valve that is easy to adjust, addressing the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a safety valve that is easy to adjust, including a valve seat, an air inlet valve port at the bottom of the valve seat, a side outlet port connected to the outer wall of the valve seat, a valve body connected to the top of the valve seat by bolts, a pressure relief port provided inside the valve seat, a connecting rod slidably connected to the top of the valve seat, a valve core connected to the bottom end of the connecting rod, the outer wall of the valve core slidably connected to the inner wall of the pressure relief port, a connecting plate slidably connected to the inner wall of the valve body, and the bottom of the connecting plate connected to the top of the connecting rod by a screw, which facilitates the installation and disassembly of the connecting plate and the connecting rod, a sleeve rod connected to the top of the connecting plate, a sleeve sleeve movably fitted on the outer wall of the sleeve rod, a movable cylinder connected to the top of the sleeve, the outer wall of the movable cylinder slidably connected to the inner wall of the valve body, a spring connecting the bottom of the movable cylinder and the top of the connecting plate, and a rotating rod rotatably connected to the top of the valve body by a bearing, the bottom of the rotating rod... A rotating column is connected to the end of the valve body and is located inside the valve body. A handwheel is connected to the top of the rotating column. An arc-shaped groove is formed on the outer wall of the rotating column. A sliding rod is slidably connected to the inner wall of the arc-shaped groove. The end of the sliding rod away from the arc-shaped groove is connected to the inner wall of the moving cylinder. By rotating the handwheel, the rotating rod and the rotating column are rotated. The arc-shaped groove on the rotating column pushes the moving cylinder up and down along the inner wall of the valve body through the sliding rod. The movement of the moving cylinder causes the sleeve to move along the outer wall of the sleeve rod. At the same time, the moving cylinder compresses or releases the first spring. The elastic force of the first spring is transmitted to the valve core through the connecting plate and the connecting rod, adjusting the sealing pressure of the valve core on the pressure relief port, i.e., the safety valve opening threshold. When the medium pressure in the valve seat exceeds the threshold, the valve core is lifted, and the medium is discharged through the pressure relief port and from the side drain port. When the pressure drops below the threshold, the first spring pushes the valve core to reset and seal the pressure relief port. The elastic force of the first spring can be adjusted by handwheel without opening the valve body, changing the safety valve opening pressure. This solves the problem of disassembling the valve body for traditional adjustment and avoids a decrease in sealing performance.

[0006] Preferably, the inner wall of the valve body has two guide grooves facing each other, and the outer wall of the moving cylinder has two sliders facing each other. The two sliders are slidably connected to the two guide grooves respectively. The sliders restrict the moving cylinder to only make vertical lifting and lowering movements, ensuring that the arc-shaped slide groove of the rotating column and the slide rod transmission are smooth, avoiding adjustment deviations caused by the tilting of the moving cylinder, and ensuring accurate adjustment of the pressure threshold.

[0007] Preferably, a sealing gasket is connected to the outer wall of the valve core, and a sealing gasket is connected to the outer wall of the connecting plate. The sealing gasket on the outer wall of the valve core enhances the fit and sealing with the pressure relief port to prevent media leakage. The sealing gasket on the outer wall of the connecting plate seals the gap in the inner wall of the valve body to prevent internal pressure leakage from affecting the elastic stability of the spring.

[0008] Preferably, there are two arc-shaped sliding grooves and two sliding rods, which are circumferentially arranged at equal intervals on the rotating column. When the rotating column rotates, the sliding rods on both sides push the moving cylinder to rise and fall synchronously, so that the moving cylinder is subjected to balanced force and avoids tilting or jamming caused by force on one side.

[0009] Preferably, a first magnet is embedded in the top of the valve body, a pull rod is slidably connected to the handwheel, a second magnet is connected to the bottom end of the pull rod, and a second spring is connected between the second magnet and the handwheel. After adjustment, the second spring pushes the second magnet to engage with the first magnet, locking the handwheel position and preventing the handwheel and lever from rotating due to vibration or accidental contact. When readjustment is required, the pull rod is pulled to disengage the second magnet from the first magnet to unlock the valve, thus improving the safety of the valve.

[0010] Preferably, the first magnet is arranged in a ring, and the opposite surfaces of the second magnet and the first magnet are attracted to each other. No matter what angle the handwheel is rotated to, the second magnet can be attracted to the first magnet, achieving 360° all-round locking and ensuring that the adjusted position does not shift.

[0011] The present invention adopts the above technical solution, which can bring the following beneficial effects: 1. This easily adjustable safety valve rotates by turning a handwheel, which drives a rotating rod and a rotating column to rotate. The arc-shaped groove on the rotating column pushes a moving cylinder up and down along the inner wall of the valve body via a sliding rod. The movement of the moving cylinder causes the sleeve to move along the outer wall of the sleeve rod. At the same time, the moving cylinder compresses or releases spring one. The elastic force of spring one is transmitted to the valve core through the connecting plate and connecting rod, adjusting the sealing pressure of the valve core on the pressure relief port, i.e., the safety valve opening threshold. When the medium pressure in the valve seat exceeds the threshold, the valve core is lifted, and the medium is discharged through the pressure relief port and from the side drain port. When the pressure drops below the threshold, spring one pushes the valve core to reset and seal the pressure relief port. The opening pressure of the safety valve can be changed by adjusting the elastic force of spring one via a handwheel without opening the valve body, solving the problem of the need to disassemble the valve body for traditional adjustment and avoiding a decrease in sealing performance.

[0012] 2. This type of safety valve is easy to adjust. After adjustment, spring two pushes magnet two to engage with magnet one, locking the handwheel position and preventing the handwheel and lever from rotating due to vibration or accidental contact. When adjustment is needed again, pull the lever to disengage magnet two from magnet one to unlock, thus improving the safety of the safety valve. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of point A; Figure 4This is a schematic diagram of the arc-shaped slide groove of this utility model.

[0014] In the diagram: 1. Valve seat; 2. Valve body; 3. Pressure relief port; 4. Connecting rod; 5. Valve core; 6. Connecting plate; 7. Sleeve rod; 8. Sleeve; 9. Moving cylinder; 10. Spring 1; 11. Rotating rod; 12. Rotating column; 13. Handwheel; 14. Arc-shaped slide groove; 15. Slide rod; 16. Guide groove; 17. Sliding block; 18. Magnet 1; 19. Pull rod; 20. Magnet 2; 21. Spring 2. Detailed Implementation

[0015] 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.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0019] Please see Figure 1-4One embodiment of this utility model is as follows: a safety valve that is easy to adjust includes a valve seat 1, an air inlet at the bottom of the valve seat 1, a side outlet connected to the outer wall of the valve seat 1, a valve body 2 bolted to the top of the valve seat 1, a pressure relief port 3 inside the valve seat 1, a connecting rod 4 slidably connected to the top of the valve seat 1, a valve core 5 connected to the bottom of the connecting rod 4, the outer wall of the valve core 5 slidably connected to the inner wall of the pressure relief port 3, a connecting plate 6 slidably connected to the inner wall of the valve body 2, and the bottom of the connecting plate 6 connected to the top of the connecting rod 4 by a screw, which facilitates the installation and disassembly of the connecting plate 6 and the connecting rod 4. A sealing gasket is connected to the outer wall of the valve core 5, and the connecting plate 6... A second sealing gasket is connected to the outer wall of the valve core 5. The first sealing gasket on the outer wall of the valve core 5 enhances the sealing performance with the pressure relief port 3, preventing medium leakage. The second sealing gasket on the outer wall of the connecting plate 6 seals the gap between the inner wall of the valve body 2, preventing internal pressure leakage of the valve body 2 from affecting the elastic stability of the spring 10. A sleeve rod 7 is connected to the top of the connecting plate 6. A sleeve 8 is movably fitted on the outer wall of the sleeve rod 7. A movable cylinder 9 is connected to the top of the sleeve 8. The outer wall of the movable cylinder 9 is slidably connected to the inner wall of the valve body 2. A spring 10 is connected between the bottom of the movable cylinder 9 and the top of the connecting plate 6. A rotating rod 11 is rotatably connected to the top of the valve body 2 through a bearing. A rotating column 12 is connected to the bottom end of the rotating rod 11 and is located inside the valve body 2. A handwheel 13 is connected to the top of the rotating rod 11. An arc-shaped groove 14 is provided on the outer wall of the rotating column 12. A slide rod 15 is slidably connected to the inner wall of the arc-shaped groove 14, and the end of the slide rod 15 away from the arc-shaped groove 14 is connected to the inner wall of the moving cylinder 9. There are two arc-shaped grooves 14 and two slide rods 15, which are circumferentially arranged at equal intervals on the rotating column 12. When the rotating column 12 rotates, the slide rods 15 on both sides push the moving cylinder 9 up and down synchronously, so that the moving cylinder 9 is subjected to balanced force and avoids tilting or jamming caused by force on one side. By rotating the handwheel 13, the rotating rod 11 and the rotating column 12 are rotated. The arc-shaped groove 14 on the rotating column 12 pushes the moving cylinder 9 along the valve body 2 through the slide rod 15. The wall slides up and down, and the moving cylinder 9 moves, driving the sleeve 8 to move along the outer wall of the sleeve rod 7. At the same time, the moving cylinder 9 compresses or releases the spring 10. The elastic force of the spring 10 is transmitted to the valve core 5 through the connecting plate 6 and the connecting rod 4, adjusting the sealing pressure of the valve core 5 on the pressure relief port 3, which is the safety valve opening threshold. When the medium pressure in the valve seat 1 exceeds the threshold, the valve core 5 is lifted, and the medium is discharged through the pressure relief port 3 and from the side drain. When the pressure drops below the threshold, the spring 10 pushes the valve core 5 to reset and seal the pressure relief port 3. The elastic force of the spring 10 can be adjusted by the handwheel 13 without opening the valve body 2, changing the safety valve opening pressure. This solves the problem of having to disassemble the valve body 2 for traditional adjustment and avoids a decrease in sealing performance.

[0020] The inner wall of the valve body 2 has two guide grooves 16 facing each other, and the outer wall of the moving cylinder 9 has two sliders 17 facing each other. The two sliders 17 are slidably connected to the two guide grooves 16 respectively. The sliders 17 restrict the moving cylinder 9 to only make vertical lifting and lowering movements, ensuring that the arc-shaped slide groove 14 of the rotating column 12 and the slide rod 15 are smoothly transmitted, avoiding adjustment deviation caused by the tilt of the moving cylinder 9, and ensuring accurate adjustment of the pressure threshold.

[0021] Working principle: By rotating the handwheel 13, the rotating rod 11 and rotating column 12 are rotated. The arc-shaped sliding groove 14 on the rotating column 12 pushes the moving cylinder 9 to slide up and down along the inner wall of the valve body 2 through the sliding rod 15. The movement of the moving cylinder 9 drives the sleeve 8 to move along the outer wall of the sleeve rod 7. At the same time, the moving cylinder 9 compresses or relaxes the spring 10. The elastic force of the spring 10 is transmitted to the valve core 5 through the connecting plate 6 and the connecting rod 4, adjusting the sealing pressure of the valve core 5 on the pressure relief port 3, which is the safety valve opening threshold. When the medium pressure in the valve seat 1 exceeds the threshold, the valve core 5 is lifted, and the medium is discharged through the pressure relief port 3 and from the side drain. When the pressure drops below the threshold, the spring 10 pushes the valve core 5 to reset and seal the pressure relief port 3. The opening pressure of the safety valve can be changed by adjusting the elastic force of the spring 10 through the handwheel 13 without opening the valve body 2.

[0022] Please see Figure 1-4 Based on the above embodiments, in another embodiment of this utility model, a magnet block 18 is embedded in the top of the valve body 2, a pull rod 19 is slidably connected to the handwheel 13, a magnet block 20 is connected to the bottom end of the pull rod 19, and a spring 21 is connected between the magnet block 20 and the handwheel 13. The magnet block 18 is arranged in a ring shape, and the opposite surfaces of the magnet block 20 and the magnet block 18 attract each other. No matter what angle the handwheel 13 rotates to, the magnet block 20 can be attracted to the magnet block 18 to achieve 360° all-round locking, ensuring that the adjusted position does not shift. After the adjustment is completed, the spring 21 pushes the magnet block 20 to attract the magnet block 18, locking the position of the handwheel 13 and preventing the handwheel 13 and the rotating rod 11 from rotating due to vibration or accidental contact. When it is necessary to adjust again, the pull rod 19 is pulled to disengage the magnet block 20 from the magnet block 18 to unlock it, thereby improving the safety of the safety valve.

[0023] Working principle: After adjustment, spring 21 pushes magnet 20 to engage with magnet 18, locking handwheel 13 and preventing handwheel 13 and lever 11 from rotating due to vibration or accidental contact. When adjustment is needed again, pull lever 19 to disengage magnet 20 from magnet 18 to unlock.

[0024] This utility model provides a safety valve that is easy to adjust. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A safety valve that is easy to adjust, comprising a valve seat (1), wherein a valve body (2) is bolted to the top of the valve seat (1), characterized in that: The valve seat (1) has a pressure relief port (3) inside. A connecting rod (4) is slidably connected to the top of the valve seat (1). A valve core (5) is connected to the bottom end of the connecting rod (4). The outer wall of the valve core (5) is slidably connected to the inner wall of the pressure relief port (3). A connecting plate (6) is slidably connected to the inner wall of the valve body (2). The bottom of the connecting plate (6) is connected to the top of the connecting rod (4) by a screw. A sleeve rod (7) is connected to the top of the connecting plate (6). A sleeve (8) is movably fitted on the outer wall of the sleeve rod (7). A movable cylinder (9) is connected to the top of the sleeve (8). The outer wall of the movable cylinder (9) is connected to the inner wall of the valve body (2). The inner wall of the valve body (2) is slidably connected. A spring (10) is connected between the bottom of the moving cylinder (9) and the top of the connecting plate (6). A rotating rod (11) is rotatably connected to the top of the valve body (2) through a bearing. A rotating column (12) is connected to the bottom end of the rotating rod (11) and is located inside the valve body (2). A handwheel (13) is connected to the top end of the rotating rod (11). An arc-shaped groove (14) is opened on the outer wall of the rotating column (12). A sliding rod (15) is slidably connected to the inner wall of the arc-shaped groove (14), and the end of the sliding rod (15) away from the arc-shaped groove (14) is connected to the inner wall of the moving cylinder (9).

2. The easily adjustable safety valve according to claim 1, characterized in that: The inner wall of the valve body (2) has two guide grooves (16) facing each other, and the outer wall of the moving cylinder (9) has two sliders (17) facing each other. The two sliders (17) are slidably connected to the two guide grooves (16) respectively.

3. The easily adjustable safety valve according to claim 1, characterized in that: The outer wall of the valve core (5) is connected to a sealing gasket one, and the outer wall of the connecting plate (6) is connected to a sealing gasket two.

4. The easily adjustable safety valve according to claim 1, characterized in that: There are two of each of the arc-shaped grooves (14) and slide rods (15), and they are arranged in equal-spaced circles on the rotating column (12).

5. The easily adjustable safety valve according to claim 1, characterized in that: A magnet block 1 (18) is embedded in the top of the valve body (2), a pull rod (19) is slidably connected to the handwheel (13), a magnet block 2 (20) is connected to the bottom end of the pull rod (19), and a spring 2 (21) is connected between the magnet block 2 (20) and the handwheel (13).

6. The easily adjustable safety valve according to claim 5, characterized in that: The first magnet block (18) is arranged in a ring, and the opposite surfaces of the second magnet block (20) and the first magnet block (18) are attracted to each other.

Images