Explosion relief valve convenient for adjusting and setting pressure

Abstract

The explosion relief valve comprises a valve body and a valve cover, the valve cover is fixedly installed at the top of the valve body through a flange structure, a pressure relief opening is formed in the outer side wall of the valve body, a valve seat is integrally formed at the bottom in the valve body, and a guide sleeve is detachably arranged at the top in the valve body. A valve rod is slidably connected into the guide sleeve, a valve element is integrally formed at the end, located in the valve body, of the valve rod, the valve element can seal the valve seat, a pressure adjusting seat is slidably connected to the end, located in the valve cover, of the valve rod, an annular flange is integrally formed on the side wall of the valve rod, and a pressure adjusting spring is arranged between the pressure adjusting seat and the annular flange. The top of the valve cover is rotationally connected with a pressure regulating rod, and a locking assembly for locking the pressure regulating rod is arranged at the top of the valve cover; the device is convenient to adjust, high in precision and easy to maintain, observe and monitor, can be widely applied to various occasions needing to prevent overpressure explosion, and provides powerful guarantee for safe operation of industrial equipment.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof safety valves, in particular to an explosion-proof safety valve which is convenient for adjusting the set pressure. Background Art

[0002] Explosion-proof safety valves are special valves whose opening and closing components remain normally closed when subjected to external forces. When the pressure of the medium within the equipment or pipeline exceeds a specified value, they discharge the medium to the outside of the system to prevent the pressure within the pipeline or equipment from exceeding the specified value. Explosion-proof safety valves are widely used in various applications requiring protection against overpressure explosions, such as in the chemical, petroleum, and natural gas industries.

[0003] Traditional explosion-proof safety valves typically adjust their set pressures using bolts. Once set, tools are required to adjust them during subsequent use. However, in practice, due to changing operating conditions or equipment requirements, it is often necessary to easily adjust the set pressure to suit varying working environments and pressure requirements. Therefore, there is an urgent need for an explosion-proof safety valve with easily adjustable set pressure. Utility Model Content

[0004] In order to solve the problem that the set pressure of the explosion-proof safety valve in the prior art is not easy to adjust, the utility model provides an explosion-proof safety valve with easy-to-adjust set pressure;

[0005] The utility model provides an explosion-proof safety valve that is easy to adjust the set pressure and adopts the following technical solutions:

[0006] , The closure of the valve body is fixedly mounted on the top of the valve body through a flange structure, and a pressure relief port is provided on the outer wall of the valve body. A valve seat is integrally formed at the bottom of the valve body, and a guide sleeve is detachably provided on the top of the valve body. A valve stem is slidably connected to the guide sleeve, and a valve core is integrally formed at one end of the valve stem located inside the valve body. The valve core can close the valve seat, and a pressure-regulating seat is slidably connected to one end of the valve stem located inside the valve cover. An annular flange is integrally formed on the side wall of the valve stem, and a pressure-regulating spring is provided between the pressure-regulating seat and the annular flange. The top of the valve cover is rotatably connected to the pressure-regulating rod, and a locking assembly for locking the pressure-regulating rod is provided on the top of the valve cover.

[0007] Furthermore, the locking assembly includes a locking pin, a locking spring, and a locking disk. The top of the valve cover is fixedly connected to two columns, the pressure-regulating rod is rotatably connected between the two columns, the side wall of the column close to the pressure-regulating rod is provided with a locking disk, the surface of the locking disk is provided with a plurality of prisms, the side wall of the pressure-regulating rod is provided with a receiving groove, the inner side wall of the receiving groove is fixedly connected to one end of the locking spring, the other end of the locking spring is fixedly connected to the locking pin, the locking pin is L-shaped, and the top of the receiving groove is provided with a sliding groove, and the top of the locking pin passes through the sliding groove and extends outside the sliding groove.

[0008] Furthermore, the cross section of the prism is triangular, and a plurality of the prisms are distributed in a circular array on the surface of the locking disk, and a driving inclined surface is formed at the end of the locking pin that contacts the prism.

[0009] Furthermore, the pressure regulating seat includes a sleeve, a top plate and a pressure regulating block. The bottom of the top plate is welded with a sleeve, the sleeve is slidably connected to the valve stem, and the top of the top plate is welded with a pressure regulating block, which extends through the top wall of the valve cover to the outside of the valve cover.

[0010] Furthermore, the top of the voltage regulating block is semicircular.

[0011] Furthermore, an observation window is provided on the outer side wall of the valve body, and the observation window is fixed by a flange structure.

[0012] In summary, the beneficial effects of the present invention are as follows:

[0013] By providing a pressure-regulating rod and locking assembly, this utility model allows users to easily adjust the set pressure without the need for complex disassembly or specialized tools. This not only simplifies the operating process but also improves work efficiency, enabling a quick response when pressure adjustment is needed. By providing a locking disk, prism, and locking pin, while achieving high-precision pressure regulation, the adjusted pressure can remain unchanged for a long time due to the stability and durability of the structure, thereby improving the reliability and safety of the equipment. The overall structure is compact and contains a large number of detachable parts. When cleaning, inspection, or replacement of parts is required, users can easily disassemble and reassemble them, reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 For this utility model Figure 1 A magnified schematic diagram of the structure in the middle;

[0017] Figure 4This is an enlarged schematic diagram of the cross section of the pressure regulating rod of the utility model;

[0018] Figure 5 It is a front view cross-sectional schematic diagram of the present invention.

[0019] As shown in the figure: 1-valve body, 11-observation window, 12-pressure relief port, 2-valve cover, 3-valve seat, 4-guide sleeve, 5-valve stem, 51-valve core, 52-annular flange, 6-pressure regulating seat, 61-sleeve, 62-top plate, 63-pressure regulating block, 7-pressure regulating spring, 8-pressure regulating rod, 91-locking pin, 911-driving inclined plane, 92-locking spring, 93-locking disk, 94-column, 95-prism, 96-accommodating groove, 97-slide groove. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 -Attached Figure 5 The utility model is further described in detail:

[0021] The embodiment of the utility model discloses an explosion-proof safety valve which is convenient for adjusting the set pressure. Figure 1 、 Figure 2 、 Figure 5 As shown, the utility model is an explosion-proof safety valve that is easy to adjust the set pressure, including a valve body 1 and a valve cover 2. The valve cover 2 is fixedly installed on the top of the valve body 1 through a flange structure. The outer wall of the valve body 1 is provided with a pressure relief port 12. The bottom of the valve body 1 is integrally formed with a valve seat 3. The top of the valve body 1 is detachably provided with a guide sleeve 4. A valve stem 5 is slidably connected in the guide sleeve 4. The end of the valve stem 5 located in the valve body 1 is integrally formed with a valve core 51. The valve core 51 can close the valve seat 3. The end of the valve stem 5 located in the valve cover 2 is slidably connected with a pressure regulating seat 6. The side wall of the valve stem 5 is integrally formed with an annular flange 52. A pressure regulating spring 7 is provided between the pressure regulating seat 6 and the annular flange 52. The top of the valve cover 2 is rotatably connected with a pressure regulating rod 8. The top of the valve cover 2 is provided with a locking assembly for locking the pressure regulating rod 8. In this embodiment, the valve body 1 and the valve cover 2 are internally connected, and a flange structure is provided at the pressure relief port 12. The shape of the guide sleeve 4 is as follows: Figure 5 As shown, the top of the valve body 1 is provided with an annular groove with an inner diameter larger than that of the valve body 1. The guide sleeve 4 can be installed in the annular groove and form an inlaid fit. At this time, the flange structure on the lower side of the valve cover 2 will press on the top of the guide sleeve 4, thereby fixing the guide sleeve 4. A sealing ring is provided between the guide sleeve 4 and the valve body 1, and a sealing ring is provided between the guide sleeve 4 and the valve stem 5. The sealing ring is a sealing structure commonly used by those skilled in the art and is not shown in the figure. The shape of the valve core 51 is as shown in FIG. Figure 5As shown, the bottom of the valve core 51 is provided with a circular annular wall, which can adjust the flow direction of the medium during pressure relief. The annular flange 52 is provided on the upper side of the guide sleeve 4. It is worth noting that the distance between the annular flange 52 and the valve core 51 is greater than the length of the sleeve 61 of the guide sleeve 4. This design ensures that the valve stem 5 is lifted by the medium during pressure relief, thereby achieving the purpose of pressure relief. By providing a pressure regulating rod 8 and a locking assembly, the user can easily adjust the set pressure without complicated disassembly or specialized tools. This not only simplifies the operation process, but also improves work efficiency and enables a quick response when pressure adjustment is needed.

[0022] like Figure 3 、 Figure 4 As shown, the locking assembly includes a locking pin 91, a locking spring 92, and a locking disk 93. The top of the valve cover 2 is fixedly connected to two columns 94. The pressure regulating rod 8 is rotatably connected between the two columns 94. The side wall of the column 94 close to the pressure regulating rod 8 is provided with a locking disk 93. The surface of the locking disk 93 is provided with a plurality of prisms 95. The side wall of the pressure regulating rod 8 is provided with a receiving groove 96. The inner side wall of the receiving groove 96 is fixedly connected to one end of the locking spring 92. The other end of the locking spring 92 is fixedly connected to the locking pin 91. The locking pin 91 is L-shaped. The top of the receiving groove 96 is provided with a slide groove 97. The top of the locking pin 91 passes through the slide groove 97 and extends outside the slide groove 97. In this embodiment, the shapes of the locking disk 93 and the locking pin 91 are as shown in FIG. Figure 3 、 Figure 4 As shown, by providing a locking plate 93, a locking pin 91, and a locking spring 92, the end of the locking pin 91 can be snapped onto a prism 95 on the surface of the locking plate 93, thereby fixing the angle of the pressure-regulating rod 8. Preferably, the cross-section of the prism 95 is triangular, and a plurality of prisms 95 are distributed in a circular array on the surface of the locking plate 93. The end of the locking pin 91 that contacts the prism 95 is formed with a driving inclined surface 911. The cross-section of the driving inclined surface 911 at the end of the locking pin 91 is triangular and matches the prism 95. When the pressure-regulating rod 8 is pressed downward against the pressure-regulating block 63, the locking pin 91 slides on the surface of the prism 95 and compresses the locking spring 92. When the locking pin 91 reaches the next prism 95, it pops out under the action of the locking spring 92 and snaps onto the next prism 95, allowing the pressure-regulating rod 8 to be adjusted step by step.

[0023] like Figure 2 、 Figure 5 As shown, the pressure regulating seat 6 includes a sleeve 61, a top plate 62 and a pressure regulating block 63. The bottom of the top plate 62 is welded with a sleeve 61, the sleeve 61 is slidably connected to the valve stem 5, and the top of the top plate 62 is welded with a pressure regulating block 63. The pressure regulating block 63 passes through the top wall of the valve cover 2 and extends to the outside of the valve cover 2. In this embodiment, the shape of the pressure regulating seat 6 is as follows: Figure 5As shown, one end of the locking spring 92 abuts against the underside of the top plate 62, and the other end of the locking spring 92 abuts against the upper side of the annular flange 52. It is worth noting that the sum of the length of the valve stem 5 above the annular flange 52 and the length of the sleeve 61 should be greater than the height of the interior of the valve cover 2, so that the sleeve 61 and the valve stem 5 can maintain a sliding connection. Another point worth noting is that when the pressure regulating rod 8 presses the pressure regulating block 63 to the lowest point, the pressure regulating spring 7 should still have a certain amount of deformation, and the distance from the valve stem 5 to the top of the sleeve 61 should be greater than the height to which the valve core 51 can rise. Preferably, the top of the pressure regulating block 63 is semicircular.

[0024] like Figure 1 As shown, the outer wall of the valve body 1 is provided with an observation window 11, which is fixed by a flange structure. In this embodiment, the provision of the observation window 11 allows the user to intuitively understand the operating status and pressure of the safety valve. This design not only improves the visibility of the equipment, but also helps to promptly identify and address potential safety hazards.

[0025] The implementation principle of the embodiment of the present utility model is:

[0026] When the supporting force acting on the bottom of the valve core 51 is greater than the elastic force of the pressure-regulating spring 7 acting on the upper part of the annular flange 52, the pressure-regulating spring 7 is compressed, so that the valve core 51 is pushed up and away from the valve seat 3, and the medium is discharged outward through the gap between the valve core 51 and the valve seat 3; when the supporting force acting on the bottom of the valve core 51 is less than the elastic force of the pressure-regulating spring 7 acting on the upper part of the annular flange 52, the pressure-regulating spring 7 is extended, so that the valve core 51 and the valve seat 3 are tightly combined again, and the medium stops being discharged.

[0027] When you want to adjust the set pressure, rotate the pressure-adjusting rod 8 to press down the pressure-adjusting block 63. The locking pin 91 in the pressure-adjusting rod 8 will slide on the surface of the prism 95 and compress the locking spring 92. When the locking pin 91 reaches the next prism 95, it will pop out under the action of the locking spring 92 and be clamped on the next prism 95, so that the pressure-adjusting rod 8 can lock the angle, thereby adjusting the height of the pressure-adjusting seat 6. In the process of the pressure-adjusting seat 6 moving downward, the pressure of the pressure-adjusting spring 7 on the upper part of the annular flange 52 will gradually increase, thereby achieving the purpose of adjusting the set pressure.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in this utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof safety valve that is easy to adjust the set pressure, comprising a valve body (1) and a valve cover (2), wherein the valve cover (2) is fixedly mounted on the top of the valve body (1) through a flange structure, and a pressure relief port (12) is provided on the outer side wall of the valve body (1), characterized in that: The bottom of the valve body (1) is integrally formed with a valve seat (3), the top of the valve body (1) is detachably provided with a guide sleeve (4), a valve stem (5) is slidably connected in the guide sleeve (4), one end of the valve stem (5) located in the valve body (1) is integrally formed with a valve core (51), the valve core (51) can close the valve seat (3), one end of the valve stem (5) located in the valve cover (2) is slidably connected with a pressure regulating seat (6), the side wall of the valve stem (5) is integrally formed with an annular flange (52), a pressure regulating spring (7) is provided between the pressure regulating seat (6) and the annular flange (52), the top of the valve cover (2) is rotatably connected with a pressure regulating rod (8), and the top of the valve cover (2) is provided with a locking assembly for locking the pressure regulating rod (8).

2. The explosion-proof safety valve with easy adjustment of set pressure according to claim 1, characterized in that: The locking assembly includes a locking pin (91), a locking spring (92), and a locking disk (93). The top of the valve cover (2) is fixedly connected to two columns (94). The pressure regulating rod (8) is rotatably connected between the two columns (94). A locking disk (93) is provided on the side wall of the column (94) close to the pressure regulating rod (8). A plurality of prisms (95) are provided on the surface of the locking disk (93). A receiving groove (96) is provided on the side wall of the pressure regulating rod (8). One end of the locking spring (92) is fixedly connected to the inner side wall of the receiving groove (96). The other end of the locking spring (92) is fixedly connected to the locking pin (91). The locking pin (91) is L-shaped. A sliding groove (97) is provided on the top of the receiving groove (96). The top of the locking pin (91) passes through the sliding groove (97) and extends outside the sliding groove (97).

3. The explosion-proof safety valve with easy adjustment of set pressure according to claim 2, characterized in that: The cross section of the prism (95) is triangular, and a plurality of the prisms (95) are distributed in a circular array on the surface of the locking disk (93). The end of the locking pin (91) in contact with the prism (95) is formed with a driving inclined surface (911).

4. The explosion-proof safety valve with easy adjustment of set pressure according to claim 2, characterized in that: The pressure regulating seat (6) includes a sleeve (61), a top plate (62) and a pressure regulating block (63), the bottom of the top plate (62) is welded with a sleeve (61), the sleeve (61) is slidably connected to the valve stem (5), the top of the top plate (62) is welded with a pressure regulating block (63), and the pressure regulating block (63) passes through the top wall of the valve cover (2) and extends to the outside of the valve cover (2).

5. The explosion-proof safety valve with easy adjustment of set pressure according to claim 4, characterized in that: The top of the pressure regulating block (63) is semicircular.

6. The explosion-proof safety valve with easy adjustment of set pressure according to claim 1, characterized in that: An observation window (11) is provided on the outer side wall of the valve body (1), and the observation window (11) is fixed by a flange structure.

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