CN217784315U

CN217784315U - Safety valve with good sealing performance

Info

Publication number: CN217784315U
Application number: CN202222017686.8U
Authority: CN
Inventors: 张琪; 张炳星
Original assignee: Jiujiang Dechang Hardware Electromechanical Co ltd
Current assignee: Jiujiang Dechang Hardware Electromechanical Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-11-11
Anticipated expiration: 2032-08-02

Abstract

The utility model discloses a relief valve that leakproofness is good, the pressure control valve comprises a valve seat, the top of disk seat is provided with loading mechanism, loading mechanism's top is provided with presses the cap, the disk seat includes the control seat, the top of control seat is connected with the connection swivel nut, the bottom fixedly connected with input tube of control seat, one side fixedly connected with output tube of control seat, the position sleeve pole has been cup jointed in the inside activity of input tube, the top fixedly connected with spliced pole of position sleeve pole, sealed external member has been cup jointed to the outside of spliced pole, external member activity groove has been seted up to the inside on control seat top, sealed external member swing joint is in the inside in external member activity groove, the outer wall of sealed external member is laminated with the inner wall in external member activity groove mutually, the top of sealed external member is provided with the valve clack. The utility model discloses a set up the sealed external member of metal system in the outside of spliced pole to make sealed external member swing joint in the inside of external member activity groove, the condition of opening and shutting of passageway between control output tube and the input tube can improve sealed external member life and sealed effect.

Description

Safety valve with good sealing performance

Technical Field

The utility model relates to a relief valve technical field, more specifically say, the utility model relates to a relief valve that leakproofness is good.

Background

The safety valve is mainly used on boiler, pressure container and pipeline to ensure that the pressure is not over the specified value, and plays an important role in protecting personal safety and equipment operation. The valve clack is connected with a valve rod, the valve rod is fastened on a valve seat, a loading mechanism is arranged on the valve clack, the load can be adjusted, when the pressure in the equipment is within a certain working pressure range, the force of the internal medium acting on the valve clack is smaller than the force of the loading mechanism acting on the valve, so that the gap between the valve seats is sealed by the valve clack, when the pressure in the equipment exceeds the specified working pressure and reaches the opening pressure of the safety valve, the force of the internal medium acting on the alarm valve is larger than the force of the loading mechanism acting on the alarm valve, so that the valve clack leaves the valve seat, the safety valve is opened, the medium in the equipment is discharged through the valve seat, if the discharge capacity of the safety valve is larger than the safe discharge capacity of the equipment, the pressure in the equipment is gradually reduced, and after short-time exhaust, the pressure is reduced to the normal working pressure.

The spring type safety valve generally realizes the sealing function by connecting a channel on a sealing rubber ring plugging valve seat at the bottom of the valve clack, but because the safety valve can be applied to different pipeline environments, a rubber sealing ring is easily corroded by a medium conveyed in a pipeline, and the sealing performance of the safety valve is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the utility model provides a relief valve that leakproofness is good, the utility model aims to solve the technical problem that: when the safety valve is applied to the environment of a pipeline for transporting corrosive media, the rubber sealing ring is easily corroded by the media transported in the pipeline, so that the sealing performance of the safety valve is reduced.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a relief valve that leakproofness is good, includes the disk seat, the top of disk seat is provided with loading mechanism, loading mechanism's top is provided with presses the cap, the disk seat includes the control seat, the top of control seat is connected with the connection swivel nut, the bottom fixedly connected with input tube of control seat, one side fixedly connected with output tube of control seat, connect swivel nut threaded connection in loading mechanism's bottom, the inside activity of input tube has cup jointed the location loop bar, the top fixedly connected with spliced pole of location loop bar, sealed external member has been cup jointed to the outside of spliced pole, the external member activity groove has been seted up to the inside on control seat top, sealed external member swing joint is in the inside of external member activity groove, the outer wall of sealed external member is laminated with the inner wall in external member activity groove mutually, the top of sealed external member is provided with the valve clack, the valve clack is including the activity push away the dish, the top fixedly connected with location sleeve pipe of activity push away the dish, the steel ball constant head tank has been seted up on the top at activity push away dish center, the bottom of activity push away the dish carries out swing joint with the top of sealed external member.

In a preferred embodiment, the sealing sleeve piece bottom inner wall both sides all seted up a groove, the equal fixedly connected with location strip in both sides, location strip swing joint is in the inside in a groove, through making location strip swing joint in the inside in a groove, is convenient for rotate connecting screw and makes the bottom of connecting screw and the top of spliced pole carry out threaded connection.

In a preferred embodiment, the sealing rubber disc is movably connected inside the sealing sleeve, and is movably connected to the top of the connecting column, and by arranging the sealing rubber disc between the sealing sleeve and the connecting column, the medium to be conveyed can be prevented from permeating from the bottom of the sealing sleeve to the top of the sealing sleeve.

In a preferred embodiment, the inside swing joint of sealing external member has connecting screw, the bottom threaded connection of connecting screw is in the inside of spliced pole, sealing rubber plate swing joint is in the outside of connecting screw, fixes sealing external member and spliced pole through utilizing connecting screw, conveniently dismantles the change with sealing external member.

In a preferred embodiment, a screw receiving groove is formed in the top end of the sealing sleeve, the connecting screw is movably connected inside the screw receiving groove, and the top of the connecting screw can be received inside the screw receiving groove by forming the screw receiving groove in the top end of the sealing sleeve, so that the bottom end of the movable push disc is attached to the top end of the sealing sleeve.

In a preferred embodiment, the positioning sleeve rod is made of a cylindrical rod movably connected in the input pipe, and a straight section is processed on two sides of the cylindrical rod.

The utility model discloses a technological effect and advantage:

1. the utility model overcomes the resistance of the loading mechanism by utilizing the pressure exerted by the conveyed medium, the sealing sleeve moves towards the top in the movable groove of the sleeve to open the channel between the output pipe and the movable groove of the sleeve, the conveying medium is convenient to enter the output pipe from the inside of the input pipe, and the service life and the sealing effect of the sealing sleeve can be prolonged in the process of using the metal sealing sleeve.

2. The utility model discloses a place the sealed rubber disk in the inside of sealed external member and will cup joint in the inside of sealed external member to utilize connecting screw to pass sealed external member and sealed rubber disk's inside and top carry out threaded connection, can avoid being carried the top infiltration of medium from the bottom between sealed external member and the spliced pole to sealed external member.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a top view of the valve flap of the present invention;

FIG. 4 is a cross-sectional view of the valve seat and seal assembly of the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 4 according to the present invention.

The reference signs are: 1. pressing the cap; 2. a loading mechanism; 3. a valve seat; 31. a control seat; 32. an input tube; 33. an output pipe; 34. connecting a threaded sleeve; 35. positioning the loop bar; 36. connecting columns; 4. a valve flap; 41. a movable push disc; 42. positioning the sleeve; 43. positioning a steel ball groove; 5. a connecting screw; 6. a sealing sleeve; 7. sealing the rubber disc; 8. a screw receiving groove; 9. a strip groove; 10. a movable groove of the external member; 11. and a positioning strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4 of the specification, the safety valve with good sealing performance of this embodiment includes a valve seat 3, a loading mechanism 2 is disposed on the top of the valve seat 3, a pressing cap 1 is disposed on the top of the loading mechanism 2, the valve seat 3 includes a control seat 31, a connection screw sleeve 34 is connected to the top end of the control seat 31, an input tube 32 is fixedly connected to the bottom end of the control seat 31, an output tube 33 is fixedly connected to one side of the control seat 31, the connection screw sleeve 34 is screwed to the bottom of the loading mechanism 2, a positioning sleeve rod 35 is movably sleeved inside the input tube 32, the positioning sleeve rod 35 is made of a cylindrical rod movably connected inside the input tube 32 by processing straight tangent planes on both sides, by using the positioning sleeve rod 35, a transported medium can enter the output tube 33 from a gap between the positioning sleeve rod 35 and the input tube 32 after the connecting rod 36 moves to the top, a sealing sleeve 6 is sleeved outside the connecting rod 36, a sleeve groove 10 is disposed inside the top end of the control seat 31, the sleeve 6 is movably connected to the inside of the sleeve 10, a movable sealing sleeve 41 is movably connected to the inner wall of the valve clack, a push disc 41 for pressing disc 41, and a steel ball pushing disc 41 for pressing disc is disposed on the movable disc 41.

The implementation scenario is specifically as follows:

going on the utility model discloses an in the use, overcome the resistance of loading mechanism 2 by the pressure that the transport medium was applyed, make spliced pole 36 drive sealed external member 6 move to the top in the inside of external member movable groove 10, can open the passageway between output tube 33 and the external member movable groove 10, thereby be convenient for get into the inside effect that reaches the release of output tube 33 by the inside that the transport medium got into external member movable groove 10 from the both sides of location loop bar 35, thereby the mode that adopts mechanical seal through the sealed external member 6 that utilizes the metal system can improve life, the problem of carrying the medium corrosion in the rubber seal is easily by the pipeline among the prior art is solved.

Referring to the attached

drawings

2, 4 and 5 of the specification, the safety valve with good sealing performance comprises a sealing sleeve 6, the inside of the sealing sleeve 6 is movably connected with a connecting screw 5, a screw accommodating groove 8 is formed in the top of the sealing sleeve 6, the connecting screw 5 is movably connected in the screw accommodating groove 8, the screw accommodating groove 8 is formed in the top of the sealing sleeve 6, the top of the connecting screw 5 can be accommodated in the screw accommodating groove 8, the bottom of the movable push disc 41 is attached to the top of the sealing sleeve 6, the bottom of the connecting screw 5 is in threaded connection with the inside of a connecting column 36, a sealing rubber disc 7 is movably connected to the outside of the connecting screw 5, the sealing sleeve 6 and the connecting column 36 are fixed by the connecting screw 5, the sealing sleeve 6 is convenient to detach and replace, a strip groove 9 is formed in the two sides of the inner wall of the bottom of the sealing sleeve 6, a positioning strip 11 is fixedly connected to the two sides of the connecting column 36, the positioning strip 11 is movably connected to the inside of the strip groove 9, the bottom of the connecting column 5 is convenient to enable the bottom of the connecting screw of the connecting column 5 to penetrate through the top of the movable push disc 36, the sealing sleeve 6, the sealing sleeve 7, the top of the sealing sleeve 6 and the sealing sleeve 6, and the sealing sleeve can be prevented from penetrating through the sealing sleeve 7, and the top of the sealing sleeve 6, and the sealing sleeve 7, and the sealing sleeve.

The implementation scenario is specifically as follows:

in carrying out the utility model discloses an in the use, through placing sealed rubber disk 7 in the inside of sealed external member 6 and cup joint spliced pole 36 in the inside of sealed external member 6, make location strip 11 peg graft in the inside of strip groove 9, then arrange connecting screw 5 in the inside of screw storage groove 8 and pass the inside of sealed external member 6 and sealed rubber disk 7, make its bottom threaded connection in the inside of spliced pole 36, make things convenient for spliced pole 36 to fix with sealed external member 6, and avoid being carried medium from the bottom between sealed external member 6 and the spliced pole 36 to the top infiltration of sealed external member 6.

And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a relief valve that leakproofness is good, includes valve seat (3), its characterized in that: the top of the valve seat (3) is provided with a loading mechanism (2), the top of the loading mechanism (2) is provided with a pressure cap (1), the valve seat (3) comprises a control seat (31), the top end of the control seat (31) is connected with a connecting threaded sleeve (34), the bottom end of the control seat (31) is fixedly connected with an input pipe (32), one side of the control seat (31) is fixedly connected with an output pipe (33), the connecting threaded sleeve (34) is in threaded connection with the bottom of the loading mechanism (2), a positioning loop bar (35) is movably sleeved in the input pipe (32), the top end of the positioning loop bar (35) is fixedly connected with a connecting column (36), the sealing sleeve (6) is sleeved outside the connecting column (36), a sleeve moving groove (10) is formed in the top end of the control seat (31), the sealing sleeve (6) is movably connected inside the sleeve moving groove (10), the outer wall of the sealing sleeve (6) is attached to the inner wall of the sleeve moving groove (10), a valve flap (4) is arranged at the top of the sealing sleeve (6), the valve flap (4) comprises a movable push disc (41), the top end of the movable push disc (41) is fixedly connected with a positioning sleeve (42), a steel ball positioning groove (43) is formed in the top end of the center of the movable push disc (41), the bottom end of the movable push disc (41) is movably connected with the top end of the sealing sleeve member (6).

2. The safety valve of claim 1, wherein: strip groove (9) have all been seted up to the both sides of sealed external member (6) bottom inner wall, the equal fixedly connected with location strip (11) in both sides of spliced pole (36), location strip (11) swing joint is in the inside in strip groove (9).

3. The safety valve of claim 1, wherein: the inside swing joint of sealed external member (6) has sealed rubber disc (7), sealed rubber disc (7) swing joint is at the top of spliced pole (36).

4. A safety valve with good sealing performance as claimed in claim 3, wherein: the inside swing joint of sealed external member (6) has connecting screw (5), the bottom threaded connection of connecting screw (5) is in the inside of spliced pole (36), sealed rubber disc (7) swing joint is in the outside of connecting screw (5).

5. The safety valve of claim 4, wherein: screw storage groove (8) have been seted up to the inside on sealing sleeve spare (6) top, connecting screw (5) swing joint accomodates the inside of groove (8) at the screw.

6. The safety valve with good sealing performance as claimed in claim 1, wherein: the positioning sleeve rod (35) is made by processing straight sections on two sides of a cylindrical rod movably connected in the input pipe (32).