Automatic pressure relief type rubber valve seat

Abstract

The application discloses a rubber automatic pressure relief type structure valve seat, which comprises a valve seat, a valve seat supporting ring is sleeved in the valve seat and slides, a sealing mechanism is arranged in the valve seat supporting ring, a supporting cylinder is welded on the valve seat supporting ring, the supporting cylinder and the valve seat are in sliding connection, an accommodating groove is formed in the valve seat, a spring is arranged in the accommodating groove, one end of the spring is in contact with the valve seat, the other end of the spring is in contact with the valve seat supporting ring, the spring and the supporting cylinder are in sliding connection, a fixing mechanism is arranged in the valve seat, a baffle is in sliding connection with the supporting cylinder, a compression spring is arranged in the supporting cylinder, a pull rod is welded on the baffle, the pull rod and the compression spring are in sliding connection, and one end of the compression spring is welded with the supporting cylinder. The application relates to the rubber automatic pressure relief type structure valve seat, which has the characteristics that the sealing property between the valve seat and the valve seat supporting ring is high, and the valve seat and the valve seat supporting ring are stably installed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pressure relief valve processing, and particularly relates to an automatic pressure relief type valve seat of rubber structure. BACKGROUND

[0002] The pressure relief valve can be automatically opened and closed according to the working pressure of a system, is generally installed on equipment or pipelines of a closed system to protect the system safety. When the pressure in the equipment or pipeline exceeds the set pressure of the pressure relief valve, the pressure relief valve is automatically opened to ensure that the pressure of the medium in the equipment and pipeline is below the set pressure, thereby protecting the equipment and pipeline and preventing accidents. In the prior art, the automatic pressure relief type valve seat of rubber structure has poor sealing between the valve seat and the valve seat support ring, and has poor installation stability between the valve seat and the valve seat support ring. Therefore, the prior art needs to be improved. SUMMARY

[0003] The application aims to provide an automatic pressure relief type valve seat of rubber structure to solve the problems in the background art.

[0004] To solve the above problems, the application provides a technical scheme.

[0005] An automatic pressure relief type valve seat of rubber structure comprises a valve seat, a valve seat support ring slidably sleeved in the valve seat, a sealing mechanism arranged in the valve seat support ring, a support cylinder welded on the valve seat support ring, the support cylinder and the valve seat being slidably connected, an accommodating groove formed in the valve seat, a spring arranged in the accommodating groove, one end of the spring being in contact with the valve seat and the other end of the spring being in contact with the valve seat support ring, the spring and the support cylinder being slidably connected, a fixing mechanism arranged in the valve seat, a baffle slidably connected in the support cylinder, a compression spring arranged in the support cylinder, a pull rod welded on the baffle, the pull rod and the compression spring being slidably connected, one end of the compression spring being welded with the support cylinder, and the other end of the compression spring being welded with the baffle.

[0006] Preferably, a guide hole is formed in the support cylinder, and a pull rod is slidably connected in the guide hole.

[0007] Preferably, the sealing mechanism comprises an elastic gasket, a vent hole, a shaft hole, an air outlet hole, a triangular sealing ring, an O-ring retainer, an O-ring seal, a sealing groove, an O-ring seal ring and a graphite packing, the elastic gasket and the valve seat support ring are slidingly sleeved, the vent hole is formed in the valve seat support ring, the triangular sealing ring and the valve seat support ring are slidingly sleeved, the air outlet hole is formed in the valve seat support ring, the O-ring retainer and the valve seat support ring are fixedly sleeved, the O-ring retainer and the valve seat are slidingly connected, the O-ring seal and the valve seat support ring are slidingly sleeved, the sealing groove is formed in the valve seat support ring, the O-ring seal ring is slidingly connected in the sealing groove, the O-ring seal ring and the valve seat are slidingly connected, and the graphite packing and the valve seat support ring are fixedly sleeved.

[0008] Preferably, the shaft hole is formed in the valve seat support ring, and the shaft hole is communicated with the vent hole and the air outlet hole.

[0009] Preferably, the O-ring seal and the valve seat are slidingly sleeved, and the O-ring seal and the O-ring retainer are in contact.

[0010] Preferably, the fixing mechanism comprises a ring groove, a screw ring, a mounting groove, a half ring, a corrugated sleeve, a clamping groove, a plug rod, a limiting hole, a pressing ring, a pin and a clamping hole, the ring groove is formed in the valve seat, the screw ring is threadedly connected in the ring groove, the mounting groove is formed in the screw ring, the two half rings are slidingly connected in the mounting groove, the corrugated sleeve is arranged in the mounting groove, the clamping groove is formed in the pull rod, the half ring is slidingly connected in the clamping groove, the plug rod is slidingly connected in the screw ring, the limiting hole is formed in the half ring, the plug rod and the limiting hole are slidingly connected, the pressing ring is in contact with the screw ring, the pressing ring and the plug rod are welded, the pin is welded on the pressing ring, the clamping hole is formed in the screw ring, and the pin is clamped in the clamping hole.

[0011] Preferably, the two half rings are symmetrically distributed in the mounting groove, and the two half rings are in contact.

[0012] Preferably, one end of the corrugated sleeve is bonded with the screw ring, and the other end of the corrugated sleeve is bonded with the half ring.

[0013] The rubber automatic pressure relief type structure valve seat has the following two beneficial effects compared with the traditional rubber automatic pressure relief type structure valve seat in specific use:

[0014] Firstly, through the setting of the support cylinder, spring, baffle, compression spring, pull rod, screw ring, half ring, corrugated sleeve, clamping groove, plug rod and other structures, the screw ring and the valve seat are made to screw motion by rotating, the half ring drives the pull rod to move, and then the compression spring acts on the support cylinder, so that the support cylinder elastically presses the valve seat support ring on the valve seat, and the half ring is limited by the plug rod, so that the valve seat and the valve seat support ring are connected, and the connection stability is high.

[0015] Secondly, through the setting of the elastic washer, air hole, shaft hole, air outlet hole, triangular sealing ring, O-ring retainer, O-ring seal, sealing groove, O-ring seal ring and graphite packing, the elastic washer and the triangular sealing ring are stably connected and fitted through the cooperation of the air hole, air outlet hole and shaft hole, and the valve seat and the valve seat support ring are high in sealing property through the elastic washer, triangular sealing ring, O-ring retainer, O-ring seal, O-ring seal ring and graphite packing. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to facilitate the description, the present application is described in detail by the following specific implementation and drawings.

[0017] Figure 1 It is the overall structure schematic diagram of the present application;

[0018] Figure 2 It is the support cylinder sectional view of the present application in A of Figure 1 ;

[0019] Figure 3 It is the B enlarged view in of the present application Figure 1 ;

[0020] Figure 4 It is the left view of the present application Figure 1 ;

[0021] Figure 5 It is the support cylinder sectional view of the present application in A of Figure 1 ;

[0022] Figure 6 It is the C enlarged view in of the present application Figure 1 ;

[0023] In the figure: 1, valve seat; 2, valve seat support ring; 3, sealing mechanism; 31, elastic washer; 32, air hole; 33, shaft hole; 34, air outlet hole; 35, triangular sealing ring; 36, O-ring retainer; 37, O-ring seal; 38, sealing groove; 39, O-ring seal; 310, graphite packing; 4, support cylinder; 5, containing groove; 6, spring; 7, fixing mechanism; 71, ring groove; 72, spiral ring; 73, mounting groove; 74, half ring; 75, corrugated sleeve; 76, clamping groove; 77, insertion rod; 78, limiting hole; 79, pressure ring; 710, clamping pin; 711, clamping hole; 8, baffle; 9, compression spring; 10, pull rod; 11, guide hole. DETAILED DESCRIPTION

[0024] As Figures 1-6 shown, the present specific embodiment adopts the following technical solutions:

[0025] Embodiment:

[0026] A rubber automatic pressure relief type structure valve seat, comprising a valve seat 1, a valve seat support ring 2 is slidably sleeved in the valve seat 1, a sealing mechanism 3 is arranged in the valve seat support ring 2, a support cylinder 4 is welded on the valve seat support ring 2, the support cylinder 4 and the valve seat 1 are slidably connected, a containing groove 5 is formed in the valve seat 1, a spring 6 is arranged in the containing groove 5, one end of the spring 6 is in contact with the valve seat 1, the other end of the spring 6 is in contact with the valve seat support ring 2, the spring 6 and the support cylinder 4 are slidably connected, a fixing mechanism 7 is arranged in the valve seat 1, a baffle 8 is slidably connected in the support cylinder 4, a compression spring 9 is arranged in the support cylinder 4, a pull rod 10 is welded on the baffle 8, the pull rod 10 and the compression spring 9 are slidably connected, one end of the compression spring 9 is welded with the support cylinder 4, and the other end of the compression spring 9 is welded with the baffle 8.

[0027] Among them, the support cylinder 4 is provided with a guide hole 11, and the pull rod 10 is slidably connected in the guide hole 11. By setting the guide hole 11, the pull rod 10 is guided.

[0028] The sealing mechanism 3 comprises an elastic gasket 31, a breathable hole 32, a shaft hole 33, an air outlet hole 34, a triangular sealing ring 35, an O-ring stop ring 36, an O-shaped sealing ring 37, a sealing groove 38, an O-shaped sealing ring 39 and a graphite packing 310. The elastic gasket 31 is sleeved with the valve seat support ring 2. The breathable hole 32 is arranged on the valve seat support ring 2. The triangular sealing ring 35 is sleeved with the valve seat support ring 2. The air outlet hole 34 is arranged on the valve seat support ring 2. The O-ring stop ring 36 is fixedly sleeved with the valve seat support ring 2. The O-ring stop ring 36 is slidably connected with the valve seat 1. The O-shaped sealing ring 37 is sleeved with the valve seat support ring 2. The sealing groove 38 is arranged on the valve seat support ring 2. The O-shaped sealing ring 39 is slidably connected in the sealing groove 38. The O-shaped sealing ring 39 is slidably connected with the valve seat 1. The graphite packing 310 is fixedly sleeved with the valve seat support ring 2. Through the cooperation of the breathable hole 32, the air outlet hole 34 and the shaft hole 33, the elastic gasket 31 and the triangular sealing ring 35 are stably connected and fit. Through the structures of the elastic gasket 31, the triangular sealing ring 35, the O-ring stop ring 36, the O-shaped sealing ring 37, the O-shaped sealing ring 39 and the graphite packing 310, the sealing property between the valve seat 1 and the valve seat support ring 2 is high.

[0029] The shaft hole 33 is arranged on the valve seat support ring 2. The shaft hole 33 is communicated with the breathable hole 32. The shaft hole 33 is communicated with the air outlet hole 34. Through the shaft hole 33, the air in the air outlet hole 34 and the breathable hole 32 can be discharged.

[0030] The O-shaped sealing ring 37 is sleeved with the valve seat 1. The O-shaped sealing ring 37 is in contact with the O-ring stop ring 36. Through the O-ring stop ring 36, the O-shaped sealing ring 37 is limited.

[0031] The fixing mechanism 7 comprises an annular groove 71, a screw ring 72, a mounting groove 73, a half ring 74, a corrugated sleeve 75, a clamping groove 76, a plug rod 77, a limiting hole 78, a compression ring 79, a bayonet 710 and a clamping hole 711. The annular groove 71 is formed in the valve seat 1. The screw ring 72 is connected with the annular groove 71 in a threaded mode. The mounting groove 73 is formed in the screw ring 72. The two half rings 74 are slidably connected in the mounting groove 73. The corrugated sleeve 75 is arranged in the mounting groove 73. The clamping groove 76 is formed in the pull rod 10. The half ring 74 is slidably connected in the clamping groove 76. The plug rod 77 is slidably connected in the screw ring 72. The limiting hole 78 is formed in the half ring 74. The plug rod 77 is slidably connected with the limiting hole 78. The compression ring 79 is in contact with the screw ring 72. The compression ring 79 is welded with the plug rod 77. The bayonet 710 is welded on the compression ring 79. The clamping hole 711 is formed in the screw ring 72. The bayonet 710 is clamped in the clamping hole 711. The bayonet 710 is made of elastic metal. The screw ring 72 and the valve seat 1 are arranged to be in threaded movement, so that the half ring 74 drives the pull rod 10 to move, and then the compression spring 9 acts on the supporting cylinder 4, so that the supporting cylinder 4 elastically presses the valve seat supporting ring 2 on the valve seat 1, and the plug rod 77 limits the half ring 74, so that the valve seat 1 and the valve seat supporting ring 2 are easily connected, and the connection stability is high.

[0032] The two half rings 74 are symmetrically arranged in the mounting groove 73, and the two half rings 74 are in contact. The two half rings 74 are arranged to make the half ring 74 move in the mounting groove 73.

[0033] One end of the corrugated sleeve 75 is bonded with the screw ring 72, and the other end of the corrugated sleeve 75 is bonded with the half ring 74. The corrugated sleeve 75 is arranged to facilitate the reset of the half ring 74.

[0034] The use state of the present application is: when installing, the elastic washer 31 and the triangular sealing ring 35 are installed into the valve seat support ring 2, so that the groove accommodating the elastic washer 31 and the triangular sealing ring 35 enters the shaft hole 33 from the air hole 32 and the air outlet hole 34, so that the elastic washer 31 and the triangular sealing ring 35 are stably connected and fit, through the structure of the elastic washer 31, the triangular sealing ring 35, the O-ring stop ring 36, the O-ring sealing ring 37, the O-ring sealing ring 39, the graphite packing 310 and the like, the sealing property between the valve seat 1 and the valve seat support ring 2 is high, when installing the valve seat support ring 2, the valve seat support ring 2 is slid into the valve seat 1, so that the support cylinder 4 passes through the valve seat 1 and enters the ring groove 71, the half ring 74 enters the installation groove 73, so that the corrugated sleeve 75 is compressed, when the support cylinder 4 moves to the position corresponding to the clamping groove 76 and the half ring 74 on the pull rod 10, the half ring 74 is loosened, the corrugated sleeve 75 is reset so that the half ring 74 enters the clamping groove 76, then the plug rod 77 is pressed in the direction of the screw ring 72, so that the plug rod 77 passes through the limiting hole 78 and limits the half ring 74, through the structure of the support cylinder 4, the spring 6, the baffle 8, the compression spring 9, the pull rod 10, the screw ring 72, the half ring 74, the corrugated sleeve 75, the clamping groove 76, the plug rod 77 and the like, by rotating the screw ring 72 and the valve seat 1 to make screwing movement, the half ring 74 drives the pull rod 10 to move, so that the compression spring 9 acts on the support cylinder 4, the support cylinder 4 elastically presses the valve seat support ring 2 on the valve seat 1, and through the limiting of the plug rod 77 to the half ring 74, the valve seat 1 and the valve seat support ring 2 are convenient to connect, and the connection stability is high.

[0035] The basic principles and main features of the present application and the advantages of the present application are shown and described above, and those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A rubber automatic pressure relief type structural valve seat comprising a valve seat (1), characterized in that: The valve seat (1) is sleeved with a valve seat support ring (2), the valve seat support ring (2) is provided with a sealing mechanism (3), the valve seat support ring (2) is welded with a support cylinder (4), the support cylinder (4) and the valve seat (1) are in sliding connection, the valve seat (1) is provided with a containing groove (5), the containing groove (5) is provided with a spring (6), one end of the spring (6) is in contact with the valve seat (1), the other end of the spring (6) is in contact with the valve seat support ring (2), the spring (6) and the support cylinder (4) are in sliding connection, the valve seat (1) is provided with a fixing mechanism (7), the support cylinder (4) is in sliding connection with a baffle (8), the support cylinder (4) is provided with a compression spring (9), the baffle (8) is welded with a pull rod (10), the pull rod (10) and the compression spring (9) are in sliding connection, one end of the compression spring (9) is welded with the support cylinder (4), the other end of the compression spring (9) is welded with the baffle (8); The sealing mechanism (3) comprises an elastic washer (31), a breathable hole (32), a shaft hole (33), an air outlet hole (34), a triangular sealing ring (35), an O-ring stop ring (36), an O-shaped sealing ring (37), a sealing groove (38), an O-shaped sealing ring (39) and a graphite packing (310), the elastic washer (31) and the valve seat support ring (2) are in sliding sleeve connection, the breathable hole (32) is formed in the valve seat support ring (2), the triangular sealing ring (35) and the valve seat support ring (2) are in sliding sleeve connection, the air outlet hole (34) is formed in the valve seat support ring (2), the O-ring stop ring (36) and the valve seat support ring (2) are fixedly sleeved, the O-ring stop ring (36) and the valve seat (1) are in sliding connection, the O-shaped sealing ring (37) and the valve seat support ring (2) are in sliding sleeve connection, the sealing groove (38) is formed in the valve seat support ring (2), the O-shaped sealing ring (39) is in sliding connection in the sealing groove (38), the O-shaped sealing ring (39) and the valve seat (1) are in sliding connection, and the graphite packing (310) and the valve seat support ring (2) are fixedly sleeved; The shaft hole (33) is formed in the valve seat support ring (2), the shaft hole (33) and the breathable hole (32) are in communication, and the shaft hole (33) and the air outlet hole (34) are in communication; The O-shaped sealing ring (37) and the valve seat (1) are in sliding sleeve connection, and the O-shaped sealing ring (37) is in contact with the O-ring stop ring (36). The fixing mechanism (7) comprises a ring groove (71), a screw ring (72), a mounting groove (73), a half ring (74), a corrugated sleeve (75), a clamping groove (76), a plug rod (77), a limiting hole (78), a pressing ring (79), a bayonet (710) and a clamping hole (711), the ring groove (71) is arranged on the valve seat (1), the screw ring (72) is connected in the ring groove (71) through threads, the mounting groove (73) is arranged in the screw ring (72), the two half rings (74) are slidably connected in the mounting groove (73), the corrugated sleeve (75) is arranged in the mounting groove (73), the clamping groove (76) is arranged on the pull rod (10), the half ring (74) is slidably connected in the clamping groove (76), the plug rod (77) is slidably connected in the screw ring (72), the limiting hole (78) is arranged on the half ring (74), the plug rod (77) and the limiting hole (78) are slidably connected, the pressing ring (79) is arranged on the screw ring (72), the pressing ring (79) and the plug rod (77) are welded, the bayonet (710) is welded on the pressing ring (79), the clamping hole (711) is arranged on the screw ring (72), and the bayonet (710) is clamped in the clamping hole (711).

2. The self-relieving rubber valve seat according to claim 1, wherein: The supporting barrel (4) is provided with a guide hole (11), and the pull rod (10) is slidably connected in the guide hole (11).

3. The self-relieving rubber valve seat according to claim 1, wherein: The two half rings (74) are symmetrically arranged in the mounting groove (73), and the two half rings (74) are in contact.

4. The self-relieving rubber valve seat according to claim 1, wherein: One end of the corrugated sleeve (75) is bonded with the screw ring (72), and the other end of the corrugated sleeve (75) is bonded with the half ring (74).

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