Pressure relief safety valve

Abstract

The utility model relates to the technical field of safety valves, and discloses a pressure relief safety valve which comprises a valve body and a connecting flange arranged on the valve body, a ring body is fixedly installed at the position, corresponding to the connecting flange, of the valve body, a plurality of hexagon bolts are arranged on the connecting flange, and a plurality of blocking structures are arranged on the ring body. The multiple blocking structures correspond to the hexagon bolts in a one-to-one mode, when the hexagon bolts are screwed and unscrewed, the blocking structures block the hexagon bolts, and when the hexagon bolts are screwed and screwed, the blocking structures do not limit the hexagon bolts. The utility model can solve the problem in the prior art that the valve body and the pipeline are loosened after the hexagon bolt rotates continuously.

Description

TECHNICAL FIELD

[0001] The utility model relates to a safety valve technical field especially relates to a kind of pressure relief safety valves. BACKGROUND

[0002] Pressure relief safety valve is a kind of automatic opening and closing device according to the working pressure of system, when the pressure in equipment or pipeline exceeds the set pressure of pressure relief valve, valve is automatically opened to release pressure, ensure that the medium pressure in equipment and pipeline is below the set pressure, thereby prevent accident. Generally installed on the equipment or pipeline of closed system, to protect system safety.

[0003] In prior art, the connecting flange of valve body and the connecting flange of pipeline are mostly fixed by hexagonal bolt, but in the process of use, hexagonal bolt rotates after vibration. After the continuous rotation of hexagonal bolt, loosening condition between valve body and pipeline is generated. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a kind of pressure relief safety valve, to solve the problem of loosening condition between valve body and pipeline after the continuous rotation of hexagonal bolt in prior art.

[0005] The utility model solves the above-mentioned technical problem by the following technical means:

[0006] A kind of pressure relief safety valve, including valve body and the connecting flange being set to valve body, the position corresponding connecting flange of valve body is fixedly installed with ring body, the connecting flange is provided with multiple hexagonal bolts, the ring body is provided with multiple blocking structures, multiple the blocking structure and multiple hexagonal bolts one-to-one, when the hexagonal bolt is rotated and loosens, the blocking structure blocks hexagonal bolt, when the hexagonal bolt is rotated and tightens, the blocking structure does not limit hexagonal bolt, so as to be smoothly tightened.

[0007] By setting the above structure, when hexagonal bolt is rotated and loosens, blocking structure blocks hexagonal bolt, prevent hexagonal bolt from rotating too much, when hexagonal bolt is rotated and tightens, blocking structure does not limit hexagonal bolt.

[0008] Further, the blocking structure includes blocking block, the ring body is provided with installation slot, the blocking block is slidably installed in installation slot, the installation slot includes limiting end and unlocking end, the blocking block and unlocking end are provided with elastic member, the elastic member is used to make the blocking block have the tendency of moving towards the direction close to limiting end, when the blocking block is located at limiting end, the blocking block blocks hexagonal bolt and loosens, when the blocking block is located at unlocking end, the hexagonal bolt can be freely rotated.

[0009] By setting the above structure, when the hexagonal bolt needs to be loosened, the blocking block can be moved to the unlocking end, and the hexagonal bolt loosening operation is facilitated.

[0010] Further, the mounting groove is provided with a sliding rod, the blocking block is slidingly arranged on the sliding rod, the elastic member is sleeved on the sliding rod, one end of the elastic member abuts against the blocking block, and the other end abuts against the end wall of the unlocking end.

[0011] By setting the above structure, the stability of the movement of the blocking block is improved.

[0012] Further, the blocking block is provided with a locking block, the locking block is provided with a locking groove, and the ring body is provided with a locking column corresponding to the position of the unlocking end; when the locking column is clamped into the locking groove, the locking block is locked at the unlocking end.

[0013] By setting the above structure, the blocking block can be locked at the unlocking end, without the need to manually keep the blocking block at the unlocking end position, and the hexagonal bolt loosening operation is further improved.

[0014] Further, the locking block is rotatably arranged on the blocking block through a torsional spring, and the end portion of the locking block is provided with a first arc surface.

[0015] By setting the above structure, when the blocking block moves to the unlocking end, the locking column can push the first arc surface to rotate the locking block, so that the locking column automatically enters the locking groove, without the need to manually clamp the locking column into the locking groove, and the operation convenience is improved.

[0016] Further, the side of the blocking block close to the hexagonal bolt is provided with a second arc surface.

[0017] By setting the above structure, the edges and corners of the blocking block are reduced, and the mutual excessive wear between the blocking block and the hexagonal bolt is avoided.

[0018] The utility model discloses the beneficial effects of the following:

[0019] 1. The utility model discloses a ring body and blocking structure are set up, when hexagonal bolt rotates and loosens, the blocking structure is prevented to hexagonal bolt and rotates the angle excessively big, when hexagonal bolt rotates and tightens, the blocking structure does not carry out the limitation to hexagonal bolt, so that the smooth tightening is convenient.

[0020] 2. The utility model discloses an installation groove and elastic member are set up, need loosening hexagonal bolt, can move blocking block to the unlocking end, and the hexagonal bolt loosening operation is facilitated.

[0021] 3. The utility model discloses a locking block, locking groove and locking column are set up, can lock blocking block at the unlocking end, without manually keeping the blocking block at the unlocking end position, and the hexagonal bolt loosening operation is further improved.

[0022] 4. The utility model discloses a torsional spring and first camber are set up, when blocking block moves to the unlocking end, locking post can push first camber and make locking block rotate, make locking post automatically enter locking groove, do not need to manually put locking post into locking groove, improve the convenience of operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a kind of structure schematic diagram of the pressure relief safety valve of the utility model;

[0024] Fig. 2 is a kind of sectional structure schematic diagram of the pressure relief safety valve of the utility model;

[0025] Fig. 3 is the split structure schematic diagram of the pressure relief safety valve in the utility model ring body and blocking structure;

[0026] Among them,

[0027] 1, valve body;

[0028] 2, connecting flange;

[0029] 3, ring body;31, installation groove;311, limit end;312, unlocking end;32, sliding rod;33, locking post;

[0030] 4, hexagon bolt;

[0031] 5, blocking block;51, locking block;511, first camber;52, locking groove;53, second camber;

[0032] 6, elastic part. DETAILED DESCRIPTION

[0033] The advantages and effects of the utility model can be understood by the content disclosed in the specification by the following specific embodiment. It should be noted that the drawings provided in the following embodiment are only used for example description, and the representation is only schematic drawing, and cannot be understood as the limitation of the utility model, in order to better illustrate the embodiment of the utility model, some components in the drawing can be omitted, enlarged or reduced, and do not represent the size of actual product;For those skilled in the art, it can be understood that some known structures and their description in the drawing can be omitted.

[0034] The same or similar reference signs in the drawings of the embodiments of the utility model correspond to the same or similar components, and in the description of the utility model, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation and be operated, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as limiting the utility model, and for ordinary skilled persons in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0035] As shown in the utility model discloses a pressure relief safety valve, including valve body 1 and setting on valve body 1 the connecting flange 2, because valve body 1 its inside specific structure prior art has been fully disclosed, therefore do not again too much repeat. Figs. 1-3 The connecting flange 2 is provided with two hexagonal bolts 4. The ring body 3 is provided with a plurality of blocking structures, and the plurality of blocking structures correspond one-to-one to the plurality of hexagonal bolts 4. When the hexagonal bolt 4 is rotated and loosened, the blocking structure blocks the hexagonal bolt 4, preventing the hexagonal bolt 4 from rotating too much. When the hexagonal bolt 4 is rotated and tightened, the blocking structure does not limit the hexagonal bolt 4.

[0036] In the embodiment, the blocking structure includes a blocking block 5, and the ring body 3 is provided with a mounting groove 31. The blocking block 5 is slidingly installed in the mounting groove 31. The mounting groove 31 includes a limiting end 311 and an unlocking end 312. An elastic member 6 is arranged between the blocking block 5 and the unlocking end 312. The elastic member 6 is used to make the blocking block 5 have a tendency to move towards the limiting end 311. When the blocking block 5 is located at the limiting end 311, the blocking block 5 blocks the hexagonal bolt 4 from being rotated and loosened. When the blocking block 5 is located at the unlocking end 312, the hexagonal bolt 4 can be freely rotated. In other embodiments, the blocking structure can also be a conventional one-way limiting structure, such as the cooperation of a ratchet and a spring.

[0037] In the embodiment, the sliding rod 32 is arranged in the mounting groove 31, the blocking block 5 is slidingly arranged on the sliding rod 32, the elastic member 6 is sleeved on the sliding rod 32, one end of the elastic member 6 abuts against the blocking block 5, and the other end abuts against the end wall of the unlocking end 312. In some other embodiments, a sliding rail can also be arranged in the mounting groove 31. The sliding rod 32 is arranged in the embodiment, so that the stability of the movement of the blocking block 5 is improved, and the mounting of the elastic member 6 is facilitated. It should be noted that the elastic member 6 in the embodiment is a compression spring.

[0038] In the embodiment, the locking block 51 is arranged on the blocking block 5, the locking groove 52 is arranged in the locking block 51, the locking column 33 is arranged on the ring body 3 at a position corresponding to the unlocking end 312, and the locking block 51 is locked on the unlocking end 312 when the locking column 33 is clamped into the locking groove 52. The blocking block 5 can be locked on the unlocking end 312, so that the blocking block 5 does not need to be manually kept at the unlocking end 312, and the loosening operation of the hexagonal bolt 4 is further improved.

[0039] In the embodiment, the locking block 51 is rotatably arranged on the blocking block 5 by a torsion spring, and the first arc surface 511 is arranged at the end of the locking block 51. When the blocking block 5 moves to the unlocking end 312, the locking column 33 can push the first arc surface 511 to rotate the locking block 51, so that the locking column 33 automatically enters the locking groove 52, and the locking column 33 does not need to be manually clamped into the locking groove 52, thereby improving the convenience of operation.

[0040] In the embodiment, the second arc surface 53 is arranged on the side of the blocking block 5 close to the hexagonal bolt 4. The edges of the blocking block 5 are reduced, so that the mutual excessive wear between the blocking block 5 and the hexagonal bolt 4 is avoided.

[0041] The working principle of the pressure relief safety valve is as follows:

[0042] Under normal circumstances, the elastic member 6 keeps the blocking block 5 at the limiting end 311 of the mounting groove 31.

[0043] During the rotation and tightening of the hexagonal bolt 4, the hexagonal bolt 4 pushes the blocking block 5 to move, so that the blocking block 5 moves to the direction close to the unlocking end 312, and the hexagonal bolt 4 is smoothly rotated and tightened. After the rotation and tightening, the elastic member 6 abuts against the blocking block 5 and the hexagonal bolt 4.

[0044] During the work, the hexagonal bolt 4 is loosened and rotated, and the blocking block 5 moves to the limiting end 311 under the action of the elastic member 6. When the blocking block 5 moves to the limiting end 311, the blocking block 5 limits the hexagonal bolt 4, and the hexagonal bolt 4 is prevented from continuing to rotate.

[0045] During the rotation and loosening of the hexagonal bolt 4,

[0046] If the hexagonal bolt 4 does not appear loose, directly move the blocking block 5 to the unlocking end 312 until the locking column 33 is clamped into the locking groove 52, lock the blocking block 5 at the unlocking end 312, and then rotate and loosen the hexagonal bolt 4.

[0047] If the hexagonal bolt 4 appears loose, the hexagonal bolt 4 needs to be rotated and tightened by a certain angle until the blocking block 5 can be smoothly moved to the unlocking end 312.

[0048] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, which should be covered in the scope of the claims of the utility model. The technical, shape and structure parts not described in detail in the utility model are all known technologies.

Claims

1. A pressure relief safety valve comprising a valve body (1) and a connecting flange (2) arranged on the valve body (1), characterized in that: The valve body (1) is fixedly installed with a ring body (3) at a position corresponding to a connecting flange (2), the connecting flange (2) is provided with a plurality of hexagonal bolts (4), the ring body (3) is provided with a plurality of blocking structures, the plurality of blocking structures correspond one-to-one to the plurality of hexagonal bolts (4), when the hexagonal bolts (4) are rotated and loosened, the blocking structures block the hexagonal bolts (4), and when the hexagonal bolts (4) are rotated and tightened, the blocking structures do not limit the hexagonal bolts (4).

2. A pressure relief safety valve according to claim 1, characterized in that: The blocking structure comprises a blocking block (5), the ring body (3) is provided with a mounting groove (31), the blocking block (5) is slidingly installed in the mounting groove (31), the mounting groove (31) comprises a limiting end (311) and an unlocking end (312), an elastic element (6) is arranged between the blocking block (5) and the unlocking end (312), the elastic element (6) is used to make the blocking block (5) have a tendency to move towards the limiting end (311), when the blocking block (5) is located at the limiting end (311), the blocking block (5) blocks the hexagonal bolts (4) from being rotated and loosened, and when the blocking block (5) is located at the unlocking end (312), the hexagonal bolts (4) can be freely rotated.

3. A pressure relief safety valve according to claim 2, wherein: The mounting groove (31) is provided with a sliding rod (32), the blocking block (5) is slidingly arranged on the sliding rod (32), and the elastic element (6) is sleeved on the sliding rod (32), one end of the elastic element (6) abuts against the blocking block (5), and the other end abuts against an end wall of the unlocking end (312).

4. A pressure relief safety valve according to claim 2, wherein: The blocking block (5) is provided with a locking block (51), the locking block (51) is provided with a locking groove (52), the ring body (3) is provided with a locking column (33) at a position corresponding to the unlocking end (312), and when the locking column (33) is clamped into the locking groove (52), the locking block (51) is locked at the unlocking end (312).

5. A pressure relief safety valve according to claim 4, wherein: The locking block (51) is rotatably installed on the blocking block (5) through a torsion spring, and an end portion of the locking block (51) is provided with a first arc surface (511).

6. A pressure relief safety valve according to claim 2, characterized in that: A side of the blocking block (5) close to the hexagonal bolt (4) is provided with a second arc surface (53).

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