Double-lever safety valve

Abstract

The utility model relates to the field of safety valves, in particular to a double-lever safety valve. Comprising a valve body, the upper end of the valve body communicates with an inlet pipe, the lower end of the valve body communicates with an outlet pipe, two connecting rods are installed on the arc surface of the valve body, a dial gauge is arranged on one side of each connecting rod, a heavy hammer is slidably connected to the side face of each connecting rod, and an adjusting structure is arranged on one side of each connecting rod and comprises two fixing plates; one side of the fixing plate is fixedly connected with the connecting rod, the side, away from the connecting rod, of the fixing plate is fixedly connected with a rack, the upper surface of the heavy hammer is fixedly connected with a connecting plate, the lower surface of the connecting plate is fixedly connected with a servo motor, the arc surface of the servo motor is electrically connected with a connecting cable, and the end, away from the servo motor, of the connecting cable is electrically connected with a power supply device. The double-lever safety valve provided by the utility model has the advantages that the position of the heavy hammer on the connecting rod can be automatically adjusted, manual adjustment by personnel is not needed, and the use convenience of the double-lever safety valve is improved.

Description

Technical Field

[0001] The utility model relates to the field of safety valves, in particular to a double-lever safety valve. Background Art

[0002] A heavy hammer lever safety valve is a pressure relief device installed on a pressure vessel to ensure the safe operation of the pressure vessel.

[0003] The invention with the publication number CN110792821B discloses a heavy hammer lever type safety valve, the technical scheme of which is as follows: it includes a valve housing, a lever rotatably connected to the top of the valve housing, a valve disc movably mounted inside the valve housing, a guide seat and a valve seat fixedly mounted inside the valve housing, a guide plate fixedly sleeved on the outer surface of the valve disc and a valve stem movably connected to the bottom of the lever, the valve housing includes a pressure relief chamber, a pressure relief port connected to the pressure relief chamber, a medium inlet connected to the pressure relief chamber and a valve cover fixedly connected to the top of the pressure relief chamber. By arranging the valve disc and the valve seat to cooperate, when foreign matter enters the sealing surface and is retained on the surface of the sealing surface, the lower surface of the valve ball in the valve disc contacts the foreign matter, and after the pressure is released, the pressure of the lever and the heavy hammer is used to make the valve ball collide with the foreign matter, causing the valve ball to roll due to uneven force, and further driving the foreign matter to fall into the connecting chamber along the sealing surface, effectively improving the operating efficiency of pressure vessels such as boilers, reducing operating costs, and reducing safety hazards.

[0004] With respect to the relevant contents mentioned above, the following technical defects are found: when the heavy hammer lever type safety valve in the prior art is in use, the heavy hammer needs to be manually adjusted, which is inconvenient, time-consuming and labor-intensive, and reduces the convenience of using the safety valve.

[0005] Therefore, it is necessary to provide a new double-lever safety valve to solve the above technical problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a double-lever safety valve.

[0007] To solve the above technical problems, the utility model provides a double-lever safety valve, comprising: a valve body, the upper end of the valve body is connected to an inlet pipe, the lower end of the valve body is connected to an outlet pipe, the arc surface of the valve body is equipped with two connecting rods, a scale is provided on one side of the connecting rod, a weight is slidably connected to the side of the connecting rod, an adjustment structure is provided on one side of the connecting rod, the adjustment structure comprises two fixed plates, one side of the fixed plate is fixedly connected to the connecting rod, a side of the fixed plate away from the connecting rod is fixedly connected to a rack, the upper surface of the weight is fixedly connected to the connecting plate, the lower surface of the connecting plate is fixedly connected to a servo motor, the arc surface of the servo motor is electrically connected to a connecting cable, the end of the connecting cable away from the servo motor is electrically connected to a power supply, the power supply is fixedly connected to the outer wall of the valve body, the output end of the servo motor is fixedly connected to a gear, and the gear is meshed with the rack.

[0008] The effect achieved by the above components is: by setting the adjustment structure, the position of the weight on the connecting rod can be automatically adjusted without manual adjustment by personnel, thereby improving the convenience of using the double-lever safety valve.

[0009] Preferably, a positioning plate is fixedly connected to the lower surface of the connecting plate, a positioning rod is slidably penetrated through the side surface of the positioning plate, and the positioning rod is fixedly connected to one side of the connecting rod.

[0010] The effect achieved by the above components is that when the connecting plate moves, the positioning plate fixed on the connecting plate will move along the arc surface of the positioning rod, thereby achieving the effect of improving the stability of the connecting plate during movement.

[0011] Preferably, a plurality of limiting rings are provided on the outside of the connecting cable, the cross section of the limiting rings is "U"-shaped, and the limiting rings are fixedly connected to the upper surface of the rack.

[0012] The effect achieved by the above components is that when the servo motor drives the connecting cable to move, the limiting ring can limit the connecting cable, thereby avoiding the connecting cable from being entangled as much as possible.

[0013] Preferably, the fixing plate is made of aluminum alloy.

[0014] The effect achieved by the above components is that by setting the fixing plate to be made of aluminum alloy, its service life can be effectively prolonged.

[0015] Preferably, the arc surface of the servo motor is provided with an auxiliary structure, and the auxiliary structure includes a partition, one side of the partition is fixedly connected to the servo motor, a sliding rod is slidably penetrated through the surface of the partition, the cross-section of the sliding rod is "T" shaped, and a spring is sleeved on the arc surface of the sliding rod, and the two ends of the spring are respectively fixedly connected to the sliding rod and the partition, and one side of the partition is threadedly connected to a pressure rod.

[0016] The effect achieved by the above components is: by setting up an auxiliary structure, when the weight moves to a suitable position on the connecting rod, personnel can easily control the sliding rod to jam the gear, thereby preventing personnel from accidentally starting the servo motor and causing the gear to rotate, thereby improving the stability of the overall structure.

[0017] Preferably, a pull ring is fixedly connected to the upper end of the sliding rod, and the pull ring is in a circular ring shape.

[0018] The effect achieved by the above components is that pulling the pull ring can drive the slide bar, thereby achieving the effect of conveniently controlling the slide bar.

[0019] Preferably, a guide block is fixedly connected to the lower end of the slide rod, and the guide block has a conical structure.

[0020] The effect achieved by the above components is: by arranging a guide block with a conical structure at the lower end of the slide rod, the guide block has a small volume, so that the slide rod can be easily clamped on the gear.

[0021] Compared with the related art, the double-lever safety valve provided by the utility model has the following beneficial effects:

[0022] The utility model provides a double-lever safety valve. By arranging an adjustment structure, the position of a heavy hammer on a connecting rod can be automatically adjusted without manual adjustment by personnel, thereby improving the convenience of using the double-lever safety valve.

[0023] By setting up an auxiliary structure, when the weight moves to a suitable position on the connecting rod, personnel can easily control the sliding rod to lock the gear, thereby preventing personnel from accidentally starting the servo motor and causing the gear to rotate, thereby improving the stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a double-lever safety valve provided by the utility model;

[0025] Figure 2 for Figure 1 The local structure schematic diagram shown;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure of the regulatory structure shown;

[0027] Figure 4 for Figure 2 A schematic diagram of the auxiliary structure shown.

[0028] Numbers in the figure: 1. valve body; 2. inlet pipe; 3. adjustment structure; 301. fixing plate; 302. rack; 303. connecting plate; 304. servo motor; 305. gear; 306. connecting cable; 307. power supply; 308. positioning plate; 309. positioning rod; 310. limiting ring; 4. auxiliary structure; 41. partition; 42. pressure rod; 43. sliding rod; 44. pull ring; 45. spring; 46. guide block; 5. outlet pipe; 6. connecting rod; 7. heavy hammer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0031] See also Figures 1 to 4 The double-lever safety valve provided by the embodiment of the utility model includes: a valve body 1, the upper end of the valve body 1 is connected with an inlet pipe 2, the lower end of the valve body 1 is connected with an outlet pipe 5, two connecting rods 6 are installed on the arc surface of the valve body 1, a scale is provided on one side of the connecting rod 6, a heavy hammer 7 is slidably connected to the side of the connecting rod 6, an adjustment structure 3 is provided on one side of the connecting rod 6, and an auxiliary structure 4 is provided on the arc surface of the servo motor 304.

[0032] In the embodiments of the present invention, please refer to Figure 2 and Figure 3The adjusting structure 3 includes two fixing plates 301, one side of the fixing plate 301 is fixedly connected to the connecting rod 6, and the side of the fixing plate 301 away from the connecting rod 6 is fixedly connected with a rack 302, the upper surface of the weight 7 is fixedly connected with a connecting plate 303, and the lower surface of the connecting plate 303 is fixedly connected with a servo motor 304, the arc surface of the servo motor 304 is electrically connected with a connecting cable 306, and the end of the connecting cable 306 away from the servo motor 304 is electrically connected with a power supply 307, and the power supply 307 is fixedly connected to the outer wall of the valve body 1, and the output end of the servo motor 304 is fixedly connected with a gear 305, and the gear 305 is meshed with the rack 302. By setting the adjusting structure 3, the position of the weight 7 on the connecting rod 6 can be automatically adjusted without manual adjustment by personnel, thereby improving the convenience of use of the double-lever safety valve, and the lower surface of the connecting plate 303 is fixed A positioning plate 308 is connected, and a positioning rod 309 is slidably penetrated on the side of the positioning plate 308. The positioning rod 309 is fixedly connected to one side of the connecting rod 6. When the connecting plate 303 moves, the positioning plate 308 fixed on the connecting plate 303 will move along the arc surface of the positioning rod 309, thereby achieving the effect of improving the stability of the connecting plate 303 during the movement process. The outer sleeve of the connecting cable 306 is provided with a plurality of limiting rings 310. The cross-section of the limiting ring 310 is "U"-shaped. The limiting ring 310 is fixedly connected to the upper surface of the rack 302. When the servo motor 304 drives the connecting cable 306 to move, the limiting ring 310 can limit the connecting cable 306, thereby avoiding the connecting cable 306 from being entangled as much as possible. The fixing plate 301 is specifically made of aluminum alloy. By setting the fixing plate 301 to be made of aluminum alloy, its service life can be effectively improved.

[0033] In the embodiments of the present invention, please refer to Figure 4 The auxiliary structure 4 includes a partition 41, one side of the partition 41 is fixedly connected to the servo motor 304, a sliding rod 43 is slidably penetrated on the surface of the partition 41, the cross section of the sliding rod 43 is "T" shaped, and a spring 45 is sleeved on the arc surface of the sliding rod 43, and the two ends of the spring 45 are respectively fixedly connected to the sliding rod 43 and the partition 41, and a pressure rod 42 is threadedly connected to one side of the partition 41. By setting the auxiliary structure 4, when the weight moves to a suitable position on the connecting rod 6, the personnel can conveniently control the sliding rod 43 to jam the gear 305, thereby avoiding the personnel from accidentally starting the gear. The servo motor 304 is driven to cause the gear 305 to rotate, thereby improving the stability of the overall structure. The upper end of the slide rod 43 is fixedly connected with a pull ring 44, and the pull ring 44 is in a circular ring shape. Pulling the pull ring 44 can drive the slide rod 43, so as to achieve the effect of conveniently controlling the slide rod 43. The lower end of the slide rod 43 is fixedly connected with a guide block 46, and the guide block 46 is in a conical structure. By arranging the guide block 46 in a conical structure at the lower end of the slide rod 43, the guide block 46 is small in size, so as to achieve the effect of conveniently making the slide rod 43 clamp the gear 305.

[0034] The working principle of the double-lever safety valve provided by the utility model is as follows: when the double-lever safety valve is in use, when the force of the lever and the weight 7 is transmitted to the valve disc, the valve seat inside the valve body 1 will be closed. When the personnel need to automatically adjust the position of the weight 7, the power supply 307 can be used to provide power to the servo motor 304, and the servo motor 304 is first started to drive the gear 305 to rotate. During the rotation of the gear 305, the gear 305 will move along the surface of the rack 302. At the same time, the servo motor 304 drives the connecting plate 303 to move with the help of the gear 305, and the connecting plate 303 drives the weight 7 to move. When the weight 7 moves to a suitable position, the servo motor 304 can be stopped. Among them, when the connecting plate 303 moves, the positioning plate 308 fixed on the connecting plate 303 will move along the arc surface of the positioning rod 309, thereby achieving the effect of improving the stability of the moving process of the connecting plate 303. In addition, when the servo motor 304 drives the connecting cable 306 to move, the limit ring 310 can limit the connecting cable 306, thereby avoiding the entanglement of the connecting cable 306 as much as possible. Finally, by setting the fixing plate 301 to an aluminum alloy material, its service life can be effectively improved. By setting the adjustment structure 3, the position of the weight 7 on the connecting rod 6 can be automatically adjusted without manual adjustment by personnel, thereby improving the convenience of use of the double-lever safety valve.

[0035] When the weight 7 needs to be fixed firmly after it moves to a suitable position, the pressure rod 42 is first rotated to separate the sliding rod 43. At this time, the spring 45 can drive the sliding rod 43 to move in the direction of the gear 305. When the sliding rod 43 jams the gear 305, the pressure rod 42 is rotated to abut against the sliding rod 43 to complete the position limiting of the gear 305. When it is necessary to control the movement of the weight 7, the pressure rod 42 is first rotated to separate the sliding rod 43, and then the pull ring 44 is pulled to drive the sliding rod 43 to separate the sliding rod 43 from the gear 305, and then the pressure rod 42 is rotated to separate the sliding rod 43 from the gear 305. The dynamic pressure rod 42 is simply in contact with the slide bar 43, wherein a guide block 46 with a conical structure is provided at the lower end of the slide bar 43. The guide block 46 is relatively small in size, so that the slide bar 43 can be easily clamped to the gear 305. By providing the auxiliary structure 4, when the weight moves to a suitable position on the connecting rod 6, personnel can easily control the slide bar 43 to clamp the gear 305, thereby preventing personnel from accidentally starting the servo motor 304 and causing the gear 305 to rotate, thereby improving the stability of the overall structure.

[0036] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Double lever safety valve, characterized in that: include: A valve body (1), wherein the upper end of the valve body (1) is connected to an inlet pipe (2), and the lower end of the valve body (1) is connected to an outlet pipe (5). Two connecting rods (6) are installed on the arc surface of the valve body (1). A scale is provided on one side of the connecting rod (6). A weight (7) is slidably connected to the side of the connecting rod (6). An adjustment structure (3) is provided on one side of the connecting rod (6). The adjustment structure (3) comprises two fixing plates (301). One side of the fixing plate (301) is fixedly connected to the connecting rod (6). The side of the fixing plate (301) away from the connecting rod (6) is fixedly connected to The rack (302) is fixedly connected to a connecting plate (303) on the upper surface of the weight (7), and a servo motor (304) is fixedly connected to the lower surface of the connecting plate (303). The arc surface of the servo motor (304) is electrically connected to a connecting cable (306), and one end of the connecting cable (306) away from the servo motor (304) is electrically connected to a power supply (307). The power supply (307) is fixedly connected to the outer wall of the valve body (1), and the output end of the servo motor (304) is fixedly connected to a gear (305), and the gear (305) is meshed with the rack (302).

2. The double lever safety valve according to claim 1, characterized in that: A positioning plate (308) is fixedly connected to the lower surface of the connecting plate (303), a positioning rod (309) is slidably penetrated through the side surface of the positioning plate (308), and the positioning rod (309) is fixedly connected to one side of the connecting rod (6).

3. The double lever safety valve according to claim 1, characterized in that: The connection cable (306) is externally sleeved with a plurality of limiting rings (310), the limiting rings (310) having a "U"-shaped cross section, and the limiting rings (310) are fixedly connected to the upper surface of the rack (302).

4. The double lever safety valve according to claim 1, characterized in that: The fixing plate (301) is specifically made of aluminum alloy.

5. The double lever safety valve according to claim 1, characterized in that: The arc surface of the servo motor (304) is provided with an auxiliary structure (4), the auxiliary structure (4) comprising a partition (41), one side of the partition (41) is fixedly connected to the servo motor (304), a sliding rod (43) is slidably penetrated through the surface of the partition (41), the cross section of the sliding rod (43) is "T" shaped, the arc surface of the sliding rod (43) is sleeved with a spring (45), the two ends of the spring (45) are respectively fixedly connected to the sliding rod (43) and the partition (41), and one side of the partition (41) is threadedly connected to a pressure rod (42).

6. The double lever safety valve according to claim 5, characterized in that: A pull ring (44) is fixedly connected to the upper end of the sliding rod (43), and the pull ring (44) is in a circular ring shape.

7. The double lever safety valve according to claim 5, characterized in that: The lower end of the sliding rod (43) is fixedly connected to a guide block (46), and the guide block (46) is in a conical structure.

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