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CN-116181938-B - Explosion-proof valve with pressure release structure

CN116181938BCN 116181938 BCN116181938 BCN 116181938BCN-116181938-B

Abstract

The application discloses an explosion-proof valve with a pressure relief structure, which relates to the technical field of valves and comprises an explosion-proof valve body and the pressure relief structure, wherein the pressure relief structure comprises a pressure relief cylinder which is connected to the upper end of the explosion-proof valve body in a penetrating way, a side leakage hole is formed in one side of the pressure relief cylinder, a plug which is connected in the pressure relief cylinder in a threaded way, a float body which is arranged in the pressure relief cylinder, an annular flange of the float body can be abutted against the upper surface of the plug so as to realize the sealing of the explosion-proof valve body, an upper pressing shaft which is connected in the pressure relief cylinder in a sealing way and can be abutted against the top of the float body, and an adjusting mechanism which is arranged on the top of the pressure relief cylinder and comprises a piston which can move up and down, wherein the piston can be abutted against the top of the upper pressing shaft, so that the pressure of the pressure relief valve body can be adjusted by adjusting the piston.

Inventors

  • XIE WEIJIA

Assignees

  • 谢纬嘉

Dates

Publication Date
20260508
Application Date
20221230

Claims (9)

  1. 1. The explosion-proof valve with the pressure relief structure is characterized by comprising an explosion-proof valve body (1) and the pressure relief structure, wherein a communication hole (11) is formed in the explosion-proof valve body (1), and the pressure relief structure comprises: the pressure release cylinder (2) is connected to the upper end of the explosion-proof valve body (1) in a penetrating way, and a side leakage hole (226) is formed in one side of the pressure release cylinder (2); the plug (3) is in threaded connection with the pressure release cylinder (2), and a small hole (34) is formed in the plug (3); The anti-explosion valve comprises a pressure release cylinder (2), and is characterized in that a float body (4) arranged in the pressure release cylinder (2), wherein the float body (4) comprises a sliding shaft (42) arranged in the small hole (34) in a sliding manner, a connecting rod (41) connected to the upper end of the sliding shaft (42) and a pressing body (44) connected to the upper end of the connecting rod (41), a plurality of slender holes (43) penetrating through the small hole (34) are formed in the sliding shaft (42), an annular flange (45) is arranged on the outer side of the pressing body (44), and the annular flange (45) can be pressed against the upper surface of the plug (3), so that the anti-explosion valve body (1) is sealed; an upper pressing shaft (5) which is connected in the pressure release cylinder (2) in a sealing way, wherein the upper pressing shaft (5) can be propped against the top of the float body (4), and an annular sealing ring (51) and an elastic sheet (53) are arranged on the outer side of the upper pressing shaft (5); The adjusting mechanism (6) is arranged at the top of the pressure release cylinder (2), the adjusting mechanism (6) comprises a piston (68) capable of moving up and down, and the piston (68) can be abutted against the top of the upper pressure shaft (5); The adjusting mechanism (6) further comprises a sealing cover (61) arranged at the top of the long cylinder body (22) of the pressure relief cylinder (2), a spiral spring (69) propped between a counter bore (54) of the upper pressure shaft (5) and the bottom of the piston (68), a roller (681) connected to the upper surface of the piston (68), a moving block (62) slidingly arranged in a long cavity (612) of the sealing cover (61), a screw rod (65) connected to the right end of the moving block (62) and a nut (66) connected to the screw rod (65), the piston (68) is in sliding fit with a through cavity (611) of the sealing cover (61), the roller (681) is propped against a side inclined surface (641) of the moving block (62), and the nut (66) is fixed on the sealing cover (61); the pressure of the upper pressure shaft (5) to the float body (4) can be adjusted by adjusting the up-and-down movement of the piston (68), so that the pressure relief pressure of the explosion-proof valve body (1) can be adjusted.
  2. 2. The explosion-proof valve with pressure relief structure according to claim 1, wherein the pressure relief cartridge (2) comprises: a flange (21) mounted on the explosion-proof valve body (1); and a long cylinder (22) connected to the upper end of the flange (21).
  3. 3. The explosion-proof valve with pressure release structure according to claim 2, wherein the long cylinder (22) has: a lower hole (221) connected to the upper end of the communication hole (11) in a penetrating manner; a middle hole (222) connected to the upper end of the lower hole (221); The sliding cavity (223) is connected to the upper end of the middle hole (222), the upper connecting part (31) of the plug (3) is arranged in the sliding cavity (223) in a sliding mode, the upper pressing shaft (5) is connected in the sliding cavity (223) in a sealing mode, and the side leakage hole (226) is formed in one side of the sliding cavity (223); and a guide groove (224) connected to the upper end of the sliding cavity (223), wherein a guide inclined plane (225) is arranged in the guide groove (224).
  4. 4. The explosion-proof valve with the pressure release structure according to claim 3, wherein the plug (3) further comprises a lower connecting portion (32) connected to the lower end of the upper connecting portion (31) and an extending portion (33) connected to the lower end of the lower connecting portion (32), the lower connecting portion (32) is in threaded connection with the middle hole (222), the extending portion (33) is slidably connected in the lower hole (221), and a rubber sealing ring (7) is arranged between the lower end face of the lower connecting portion (32) and the bottom wall of the middle hole (222).
  5. 5. The explosion-proof valve with pressure release structure according to claim 4, characterized in that the pressure body (44) can be held between the upper pressure shaft (5) and the top of the upper connection part (31).
  6. 6. The explosion-proof valve with pressure relief structure according to claim 5, characterized in that the bottom of the upper pressure shaft (5) can be pressed against the annular flange (45).
  7. 7. The explosion-proof valve with pressure relief structure according to claim 6, characterized in that the bottom of the upper pressure shaft (5) has a pressing conical surface (52) that can press against the annular flange (45).
  8. 8. The explosion-proof valve with the pressure release structure according to claim 7, wherein the elastic sheet (53) comprises a long sheet body (531) and a protruding part (532) connected to the upper end of the long sheet body (531), and the protruding part (532) can be abutted against the guide inclined plane (225).
  9. 9. The explosion-proof valve with the pressure release structure according to claim 8, characterized in that a hand wheel (67) is arranged at the right end part of the screw rod (65), a key groove (621) is formed in the top of the moving block (62), a guide key (63) is arranged in the key groove (621), the top of the guide key (63) is connected with the sealing cover (61), a notch (64) is formed in the moving block (62), and the side inclined surface (641) is located at the left end of the notch (64).

Description

Explosion-proof valve with pressure release structure Technical Field The application relates to the technical field of valves, in particular to an explosion-proof valve with a pressure relief structure. Background The types of valves are very numerous and can be classified into shut-off valves, check valves, regulating valves, etc. according to the function. According to the difference of the conveying materials, the valve can be divided into a hydraulic valve, a pneumatic valve and the like, when the gas is conveyed, the pressure of the gas to the pipeline is different due to different flow rates of the gas in different pipelines, when the pressure of the gas to the pipeline is overlarge, the phenomenon that the pipeline is cracked due to overlarge bearing pressure easily occurs, the pipeline explodes under serious conditions, and the use danger is high. Disclosure of Invention In view of the above, the present application provides an explosion-proof valve with a pressure relief structure to solve the above-mentioned technical problems. In order to achieve the above purpose, the present invention provides the following technical solutions: The explosion-proof valve with the pressure relief structure comprises an explosion-proof valve body and the pressure relief structure, wherein a communication hole is formed in the explosion-proof valve body, and the pressure relief structure comprises: the pressure release cylinder is connected to the upper end of the explosion-proof valve body in a penetrating way, and a side leakage hole is formed in one side of the pressure release cylinder; the plug is in threaded connection with the pressure release cylinder; the annular flange of the float body can be propped against the upper surface of the plug, so that the explosion-proof valve body is sealed; The upper pressing shaft is connected in the pressure relief cylinder in a sealing way and can be propped against the top of the float body; the adjusting mechanism is arranged at the top of the pressure relief cylinder and comprises a piston capable of moving up and down, and the piston can be propped against the top of the upper pressure shaft; Specifically, through adjusting the piston reciprocates, can adjust upward press the axle to the pressure of supporting of float body to realize the regulation of the pressure release pressure of explosion-proof valve body. Further, the pressure release cylinder includes: A flange mounted on the explosion proof valve body; And a long cylinder connected to the upper end of the flange. Still further, the long cylinder has therein: a lower hole connected to the upper end of the communication hole; a middle hole connected to the upper end of the lower hole; The upper connecting part of the plug is arranged in the sliding cavity in a sliding way, the upper pressing shaft is connected in the sliding cavity in a sealing way, and the side leakage Kong Kaishe is arranged on one side of the sliding cavity; The guide groove is connected to the upper end of the sliding cavity, and a guide inclined plane is arranged in the guide groove. Still further, the end cap still includes the connection is in the lower connecting portion of upper connecting portion lower extreme and connect the extension of lower connecting portion lower extreme, lower connecting portion with mesopore threaded connection, extension sliding connection is in the lower hole, be equipped with rubber seal between the lower terminal surface of lower connecting portion and the diapire in mesopore. Still further, the float body further includes: the connecting rod can extend into the small hole of the plug; The sliding shaft is connected to the lower end of the connecting rod and is in sliding fit with the small hole; the pressing body is connected to the upper end of the connecting rod, and the pressing body can be pressed between the upper pressing shaft and the top of the upper connecting portion. Furthermore, a plurality of slender holes communicated with the small holes are formed in the sliding shaft, the annular flange is connected to the outer side of the pressing body, and the bottom of the upper pressing shaft can be pressed against the annular flange. Furthermore, the bottom of the upper pressing shaft is provided with a pressing conical surface which can be pressed against the annular flange, and the outer side of the upper pressing shaft is provided with an annular sealing ring and an elastic sheet. Further, the elastic sheet comprises a long sheet body and a protruding part connected to the upper end of the long sheet body, and the protruding part can be propped against the guide inclined plane. Still further, the adjustment mechanism further includes: The sealing cover is arranged at the top of the long cylinder body, and the piston is in sliding fit with the through cavity of the sealing cover; a coil spring which is propped between the counter bore of the upper pressing shaft and the bottom of the piston; the