Safety valve

Abstract

The utility model relates to the technical field of valves, and discloses a safety valve which comprises a valve body, a threaded rod and an adjusting mechanism fixedly connected to the top of the threaded rod, the adjusting mechanism comprises a main body assembly and an extension assembly, the main body assembly is fixedly connected with the threaded rod, and the extension assembly is assembled on the main body assembly. The main body assembly comprises a folded state and an extending state, and when the extending assembly is in the extending state, the extending assembly extends the rotating force arm of the adjusting mechanism. The problem that in the prior art, it is strenuous to rotate an adjusting hand wheel to change the compression amount of a spring can be solved.

Description

Technical Field

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

[0002] A safety valve is a valve for safety protection, mainly used for high-pressure equipment, pipelines, etc. When the pressure in the equipment or pipeline rises and exceeds the threshold value of the safety valve, the safety valve automatically opens to relieve pressure, playing an important role in protecting personal safety and the operation of the equipment.

[0003] The safety valves in the prior art mainly include a valve body for connecting pipelines, and a threaded rod arranged in the valve body for adjusting the spring compression amount in the valve body. The top of the threaded rod is usually fixedly connected to an adjusting handwheel, and the threaded rod can be driven to rotate by rotating the adjusting handwheel.

[0004] It is found during use that due to the large pressure of the spring on the threaded rod, it is rather laborious to rotate the adjusting handwheel to change the spring compression amount. Summary of the Invention

[0005] In view of this, the purpose of the utility model is to provide a safety valve to solve the problem in the prior art that it is rather laborious to rotate the adjusting handwheel to change the spring compression amount.

[0006] The utility model solves the above technical problems through the following technical means:

[0007] A safety valve includes a valve body, a threaded rod, and an adjusting mechanism fixedly connected to the top of the threaded rod. The adjusting mechanism includes a main body component and an extension component. The main body component is fixedly connected to the threaded rod, and the extension component is assembled on the main body component. The main body component has a folded state and an extended state. When the extension component is in the extended state, the extension component extends the rotation lever arm of the adjusting mechanism.

[0008] By setting the above structure, when it is necessary to rotate the adjusting mechanism, the extension component is changed from the folded state to the extended state to extend the rotation lever arm of the adjusting mechanism, making the rotation process more labor-saving and convenient for operation. After the rotation is completed, the extension component is changed from the extended state to the folded state to prevent the extension component from occupying a large space.

[0009] Furthermore, the main body assembly includes a connecting member fixedly connected to the top of the threaded rod. The two ends of the connecting member are respectively provided with a first mounting member and a second mounting member. The extension assembly includes an extension member. One end of the extension member is rotatably connected to the first mounting member, and the other end is detachably connected to the second mounting member. A limiting member for restricting the rotation angle of the extension member is provided on the first mounting member. By setting the above structure, detaching one end of the extension member from the second mounting member and rotating the extension member to the maximum position can change the extension member from the folded state to the extended state, which is simple and convenient to operate.

[0010] Furthermore, there are two extension members symmetrically arranged on both sides of the connecting member, and the two extension members are respectively used to adjust the forward and reverse rotation of the mechanism.

[0011] By setting the above structure, according to the direction in which the threaded rod needs to rotate, the corresponding extension member can be selected to be unfolded from the folded state to the extended state. Both forward and reverse rotations can extend the rotation force arm through the corresponding extension member, improving convenience.

[0012] Furthermore, the extension member is set to be arc-shaped. When both extension members are in the folded state, the two extension members and the main body assembly form a ring body.

[0013] By setting the above structure, when the compression amount of the spring is small and the threaded rod can be rotated without increasing the force arm, the ring-shaped adjustment mechanism can facilitate the rapid rotation of the threaded rod.

[0014] Furthermore, both the first mounting member and the second mounting member are arc-shaped.

[0015] By setting the above structure, when both extension members are in the folded state, the first mounting member and the second mounting member can match with the two extension members to form a ring, avoiding affecting the use experience.

[0016] Furthermore, a connecting key is provided at the top of the threaded rod, a key groove is formed on the connecting member, the connecting key is inserted into the key groove, a threaded column is provided at the top of the connecting key, and a fixing bolt is threadedly connected to the threaded column. The fixing bolt is used to lock the connecting member on the connecting key.

[0017] By setting the above structure, the fixed connection between the connecting member and the threaded rod is realized, and it is convenient for later maintenance and replacement.

[0018] Furthermore, a hinge groove is formed on the first mounting member, and a hinge rod is provided at one end of the extension member close to the first mounting member. The hinge rod is rotatably installed in the hinge groove.

[0019] By setting the above structure, the rotational connection between the extension member and the first mounting member is realized.

[0020] Furthermore, the limiting member is integrally formed in the hinge groove, and the side of the limiting member close to the extension member is provided with an arc surface.

[0021] Furthermore, a slot is formed in the second mounting member, one end of the extension member close to the second mounting member is inserted into the slot, a pin rod is arranged on the second mounting member, a pin hole is formed in the extension member, and the pin rod is inserted into the pin hole.

[0022] Advantages of the utility model:

[0023] 1. By providing the extension assembly in the utility model, when the adjustment mechanism needs to be rotated, the extension assembly is changed from the folded state to the extended state, so that the rotation lever arm of the adjustment mechanism is extended, the rotation process is more labor-saving and convenient to operate. After the rotation is completed, the extension assembly is changed from the extended state to the folded state again to prevent the extension assembly from occupying too much space.

[0024] 2. By providing the first mounting member, the second mounting member and the extension member in the utility model, one end of the extension member is disassembled from the second mounting member, and the extension member is rotated to the maximum position, then the extension member can be changed from the folded state to the extended state, and the operation is simple and convenient.

[0025] 3. By providing two extension members in the utility model, according to the direction in which the threaded rod needs to be rotated, the corresponding extension member can be selected to be unfolded from the folded state to the extended state, and both forward and reverse rotations can extend the rotation lever arm through the corresponding extension member, improving convenience.

[0026] 4. By setting the extension member to be arc-shaped in the utility model, when both of the two extension members are in the folded state, the two extension members and the main body assembly form a ring body. When the compression amount of the spring is small and the threaded rod can be rotated without increasing the lever arm, the ring-shaped adjustment mechanism can facilitate the rapid rotation of the threaded rod. Description of the drawings

[0027] Figure 1 is a schematic structural diagram of a safety valve of the utility model;

[0028] Figure 2 is a schematic structural diagram of a threaded rod and an adjustment mechanism in a safety valve of the utility model;

[0029] Figure 3 is a schematic exploded structural diagram of a threaded rod and an adjustment mechanism in a safety valve of the utility model;

[0030] Among them,

[0031] 1. Valve body;

[0032] 2. Threaded rod; 21. Connecting key; 22. Threaded column; 23. Fixed bolt;

[0033] 3. Main body assembly; 31. Connecting piece; 311. Keyway; 32. First mounting piece; 321. Hinge groove; 33. Second mounting piece; 331. Slot; 332. Pin rod; 34. Limiting piece; 341. Arc surface

[0034] 4. Extension assembly; 41. Extension piece; 411. Hinge rod; 412. Pin hole Detailed implementation mode

[0035] The following specific embodiments illustrate the implementation modes of the present utility model. Those skilled in the art can understand the advantages and effects of the present utility model from the content disclosed in this specification. It should be noted that the drawings provided in the following embodiments are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present utility model. In order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted

[0036] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation to the present utility model. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances

[0037] As Figures 1-3 shown, a safety valve of the present utility model includes a valve body 1, a threaded rod 2, and an adjusting mechanism fixedly connected to the top of the threaded rod 2. The bottom of the threaded rod 2 is assembled in the valve body 1. The specific structure has been fully disclosed in the prior art, so it will not be described in detail here. The adjusting mechanism includes a main body assembly 3 and an extension assembly 4. The main body assembly 3 is fixedly connected to the threaded rod 2, and the extension assembly 4 is assembled on the main body assembly 3. The main body assembly 3 has a folded state and an extended state. When the extension assembly 4 is in the extended state, the extension assembly 4 extends the rotation force arm of the adjusting mechanism. When it is necessary to rotate the adjusting mechanism, the extension assembly 4 is changed from the folded state to the extended state, so that the rotation force arm of the adjusting mechanism is extended, the rotation process is more labor-saving and convenient for operation. After the rotation is completed, the extension assembly 4 is changed from the extended state to the folded state again to prevent the extension assembly 4 from occupying a large space

[0038] In this embodiment, the main body assembly 3 includes a connecting member 31. The connecting member 31 is fixedly connected to the top of the threaded rod 2. A first mounting member 32 and a second mounting member 33 are respectively arranged at two ends of the connecting member 31. In this embodiment, the first mounting member 32 and the second mounting member 33 are integrally formed with the connecting member 31. In some other embodiments, fixed connection methods such as welding, screwing, and riveting can also be adopted. The extension assembly 4 includes an extension member 41. One end of the extension member 41 is rotatably connected to the first mounting member 32, and the other end is detachably connected to the second mounting member 33. A limiting member 34 for restricting the rotation angle of the extension member 41 is arranged on the first mounting member 32. By detaching one end of the extension member 41 from the second mounting member 33 and rotating the extension member 41 to the maximum position, the extension member 41 can be changed from the folded state to the extended state, and the operation is simple and convenient. In some other embodiments, the extension member 41 can also be slidably mounted between the first mounting member 32 and the second mounting member 33.

[0039] In this embodiment, there are two extension members 41. The two extension members 41 are symmetrically arranged on both sides of the connecting member 31. The two extension members 41 are respectively used for the forward rotation and reverse rotation of the mechanism. When in use, according to the required rotation direction of the threaded rod 2, the corresponding extension member 41 can be selected to be unfolded from the folded state to the extended state. Both forward rotation and reverse rotation can extend the rotation force arm through the corresponding extension member 41, improving convenience.

[0040] In this embodiment, the extension member 41 is arranged in an arc shape. When both extension members 41 are in the folded state, the two extension members 41 and the main body assembly 3 form a ring body. When the two extension members 41 form a ring body, when the compression amount of the spring is small and the threaded rod 2 can be rotated without increasing the force arm, the ring-shaped adjustment mechanism can facilitate the rapid rotation of the threaded rod 2. In some other embodiments, the extension assembly 4 can also be arranged as a straight rod.

[0041] In this embodiment, both the first mounting member 32 and the second mounting member 33 are in an arc shape, and the radius of the arc is matched with the radius of the arc of the extension member 41. When both extension members 41 are in the folded state, the first mounting member 32 and the second mounting member 33 can match with the two extension members 41 to form a ring, improving the use experience. In some other embodiments, the first mounting member 32 can also be arranged as a straight line.

[0042] In this embodiment, a connection key 21 is arranged at the top of the threaded rod 2. A key groove 311 is formed on the connecting member 31. The connection key 21 is inserted into the key groove 311. A threaded column 22 is arranged at the top of the connection key 21. A fixing bolt 23 is threadedly connected to the threaded column 22. The fixing bolt 23 is used to lock the connecting member 31 on the connection key 21, realizing the fixed connection between the connecting member 31 and the threaded rod 2, and facilitating later maintenance and replacement. In some other embodiments, the fixed connection between the connecting member 31 and the threaded rod 2 can also be realized by welding or integral molding.

[0043] It should be noted that multiple washers are provided between the fixing bolt 23 and the connecting member 31 to ensure the locking effect.

[0044] In this embodiment, a hinge groove 321 is formed on the first mounting member 32. One end of the extension member 41 close to the first mounting member 32 is provided with a hinge rod 411, and the hinge rod 411 is rotatably mounted in the hinge groove 321 to realize the rotational connection between the extension member 41 and the first mounting member 32. In some other embodiments, the rotational connection can also be realized through hinges, hinges, etc.

[0045] In this embodiment, the limiting member 34 is integrally formed in the hinge groove 321. One side of the limiting member 34 close to the extension member 41 is set as an arc surface 341. After the extension member 41 rotates to fit with the arc surface 341, the maximum rotation angle is reached. In some other embodiments, the limiting member 34 can also be set as an independent limiting post, limiting block, etc.

[0046] In this embodiment, a slot 331 is formed on the second mounting member 33. One end of the extension member 41 close to the second mounting member 33 is inserted into the slot 331. A pin rod 332 is provided on the second mounting member 33, and a pin hole 412 is formed on the extension member 41. The pin rod 332 is inserted into the pin hole 412. By taking out or inserting the pin rod 332 from the pin hole 412, the detachable connection between the extension member 41 and the second mounting member 33 is realized. In some other embodiments, the detachable connection between the extension member 41 and the second mounting member 33 can also be realized by setting buckles, lock holes and lock tongues, etc.

[0047] The usage method of this embodiment is as follows:

[0048] First, select the corresponding extension member 41 according to the rotation direction.

[0049] Subsequently, take out the pin rod 332 from the pin hole 412, and rotate the extension member 41 along the hinge rod 411 until the extension member 41 fits with the arc surface 341 of the limiting member 34, so that the extension member 41 changes from the folded state to the extended state.

[0050] Then, push the extension member 41 to drive the connecting member 31 to rotate, and drive the threaded rod 2 to rotate through the connecting member 31.

[0051] After rotation, change the extension member 41 from the extended state to the folded state, and insert the pin rod 332 into the pin hole 412.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention. The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

Claims

1. A safety valve, comprising a valve body (1), a threaded rod (2) and an adjustment mechanism fixedly connected to the top of the threaded rod (2), characterized in that: The adjustment mechanism comprises a main body component (3) and an extension component (4); the main body component (3) is fixedly connected to the threaded rod (2); the extension component (4) is assembled on the main body component (3); the main body component (3) comprises a folded state and an extended state; when the extension component (4) is in the extended state, the extension component (4) extends the rotation arm of the adjustment mechanism.

2. A safety valve according to claim 1, characterized in that: The main body component (3) comprises a connecting member (31), wherein the connecting member (31) is fixedly connected to the top of the threaded rod (2), and a first mounting member (32) and a second mounting member (33) are respectively provided at two ends of the connecting member (31). The extension component (4) comprises an extension member (41), wherein one end of the extension member (41) is rotatably connected to the first mounting member (32), and the other end is detachably connected to the second mounting member (33), and a limiting member (34) for limiting the rotation angle of the extension member (41) is provided on the first mounting member (32).

3. A safety valve according to claim 2, characterized in that: Two extension pieces (41) are provided, and the two extension pieces (41) are symmetrically arranged on both sides of the connecting piece (31). The two extension pieces (41) are respectively used for adjusting the forward rotation and reverse rotation of the mechanism.

4. A safety valve according to claim 3, characterized in that: The extension piece (41) is arranged in an arc shape, and when the two extension pieces (41) are in a folded state, the two extension pieces (41) and the main body component (3) form a ring body.

5. A safety valve according to claim 4, characterized in that: The first mounting member (32) and the second mounting member (33) are both arc-shaped.

6. A safety valve according to claim 2, characterized in that: A connecting key (21) is arranged at the top of the threaded rod (2), a keyway (311) is provided on the connecting piece (31), the connecting key (21) is inserted into the keyway (311), a threaded column (22) is arranged at the top of the connecting key (21), a fixing bolt (23) is threadedly connected to the threaded column (22), and the fixing bolt (23) is used to lock the connecting piece (31) on the connecting key (21).

7. A safety valve according to claim 2, characterized in that: The first mounting member (32) is provided with a hinge groove (321), and an end of the extension member (41) close to the first mounting member (32) is provided with a hinge rod (411), and the hinge rod (411) is rotatably mounted in the hinge groove (321).

8. A safety valve according to claim 7, characterized in that: The limiting member (34) is integrally formed in the hinge groove (321), and a side of the limiting member (34) close to the extension member (41) is provided as a curved surface (341).

9. A safety valve according to claim 2, characterized in that: The second mounting member (33) is provided with a slot (331), one end of the extension member (41) close to the second mounting member (33) is inserted into the slot (331), the second mounting member (33) is provided with a pin rod (332), the extension member (41) is provided with a pin hole (412), and the pin rod (332) is inserted into the pin hole (412).

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