CN216618606U

CN216618606U - Safety valve

Info

Publication number: CN216618606U
Application number: CN202123224385.4U
Authority: CN
Inventors: 张汉涛
Original assignee: Shanghai Shenji Meter Co ltd
Current assignee: Shanghai Shenji Meter Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-27
Anticipated expiration: 2031-12-21

Abstract

The utility model belongs to the field of valves, in particular to a safety valve, aiming at the problem that the existing safety valve can only realize opening or closing and is difficult to control the flow, so that the safety valve is inconvenient to use, the utility model provides a scheme which comprises a valve seat, wherein a water inlet is arranged on the right side of the valve seat, a water outlet pipe is fixedly arranged on the inner wall of the bottom of the valve seat, a valve cover is connected in a sealing and sliding manner in the water outlet pipe, a flow hole is arranged on the inner wall of the right side of the valve cover, an installation pipe is fixedly communicated with the top of the valve seat, a connecting cover is fixedly communicated with the top of the installation pipe, and a valve rod is fixedly connected with the top of the valve cover. Therefore, the utility model has good practicability.

Description

Safety valve

Technical Field

The utility model relates to the technical field of valves, in particular to a safety valve.

Background

The safety valve is widely applied to the fields of power generation, oil refining, chemical instruments, instruments and meters and the like, and is particularly widely used in liquid conveying pipelines. When the pipeline bursts or the equipment fails to cause the fluid to leak, the safety valve can automatically close the valve and cut off the flow of the fluid so as to prevent the flammable, explosive or toxic and harmful fluid from flowing out in large quantity, reduce the damage to the health of people and the pollution to the natural environment, and simultaneously reduce the loss of enterprises and the waste of resources;

the prior safety valve can only realize opening or closing, is difficult to realize flow control, and has no convenience in use, so that the safety valve is provided for solving the problems outlined above.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that the prior art has a safety valve which can only realize opening or closing and is difficult to control the flow, so that the prior art has no convenience in use.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a safety valve comprises a valve seat, a water inlet is arranged on the right side of the valve seat, a water outlet pipe is fixedly arranged on the inner wall of the bottom of the valve seat, and the water outlet pipe is connected with a valve cover in a sealing and sliding way, the right inner wall of the valve cover is provided with a flowing hole, the top of the valve seat is fixedly communicated with a mounting pipe, the top end of the mounting pipe is fixedly communicated with a connecting cover, the top of the valve cover is fixedly connected with a valve rod, the top end of the valve rod respectively penetrates through the valve seat and the mounting pipe and extends into the connecting cover, a baffle plate is fixedly arranged at the top end of the valve rod, a sliding hole is arranged on the inner wall of the left side of the connecting cover, the left side of the baffle plate penetrates through the sliding hole and extends to the left side of the connecting cover, the left side of the connecting cover is connected with a transmission assembly, the transmission assembly is matched with the baffle, the valve rod is connected with a reset assembly, and the reset assembly is connected with the inner wall of the right side of the installation pipe.

Preferably, the inner wall of the installation pipe is fixedly provided with a sealing ring, the sealing ring is internally and fixedly provided with sealing filler, the valve rod penetrates through the sealing filler and is in sealing sliding connection with the sealing filler, the sealing filler is arranged to realize sealing sliding limitation on the valve rod, and the safety valve can be prevented from leakage.

Preferably, including perk pole and screw member on the drive assembly, the top of perk pole rotates with the left side top of connecting cover to be connected, the bottom of perk pole and baffle contacts, screw member is connected with the left side of perk pole and connecting cover respectively, sets up drive assembly and can conveniently drive the valve rod and upwards remove, realizes adjusting flow.

Preferably, including backup pad, screw rod and nut on the screw member, the backup pad rotates to be connected in the left side of installation pipe, the screw rod is rotated with the left side of backup pad and is connected, the screw rod run through the nut and with nut threaded connection, the nut is rotated with the front side bottom of perk pole and is connected, sets up the screw member and can drive when rotating the screw rod and stick up the pole and rotate to this can promote the baffle and carry out longitudinal movement.

Preferably, reset assembly is last including linking spacing cover, sliding member, extension spring and dwang, spacing cover fixed mounting is in the front side of valve rod, sliding member connects in spacing cover, sliding member rotates with the dwang to be connected, the right-hand member of dwang rotates with the right side inner wall of installation pipe to be connected, extension spring is located spacing cover, and extension spring's left end and right-hand member are connected with the left side inner wall and the sliding member of spacing cover respectively, set up reset assembly and can provide necessary power that resets when the valve rod moves down.

Preferably, including gag lever post, spacing ring and connecting axle on the sliding member, gag lever post fixed mounting is in spacing cover, the gag lever post slip cap is established on the gag lever post, the connecting axle rotates with the front side of gag lever post and is connected, the connecting axle run through the dwang and with dwang fixed connection, the extension spring cover is established on the gag lever post, extension spring's right-hand member sets up the sliding member with the left side fixed connection of gag lever post and can carry out longitudinal movement at the gag lever post when, can drive the dwang and rotate to rotation through the dwang can make extension spring be in the stress state.

Has the advantages that:

1. according to the utility model, the nut can be driven to move towards the left side by rotating the screw rod, the tilting rod can be driven to rotate upwards by the nut, the baffle can be pushed to move upwards when the tilting rod rotates upwards, the valve rod can be driven to move upwards when the baffle moves, the valve cover can be driven to move upwards at the moment, the flow hole can be moved into the valve seat to be communicated with the valve seat, and the communication area between the flow hole and the valve seat can be continuously increased along with the increase of the upward movement displacement of the valve cover, so that the flow can be regulated;

2. according to the utility model, when the valve rod moves upwards, the limiting cover can be driven to move upwards, at the moment, the rotating rod can be driven to rotate upwards under the sliding fit of the limiting ring and the limiting rod, and when the rotating rod rotates upwards, the limiting ring can be driven to move towards the right side, so that the extension spring can be in a stressed state, and the extension spring in the stressed state can provide necessary reset force when the valve rod moves downwards;

according to the utility model, the tilting rod is driven to rotate by rotating the screw rod, so that the valve cover can be driven to longitudinally move through the valve rod, and the flow can be regulated.

Drawings

Fig. 1 is a front view of a safety valve according to the present invention;

FIG. 2 is a front view of the internal structure of a safety valve according to the present invention;

FIG. 3 is a side three-dimensional view of a valve stem, a sealing ring and a valve bonnet connection structure of a safety valve according to the present invention;

fig. 4 is a top view of the internal structure of a limiting cover of the safety valve according to the present invention;

fig. 5 is a schematic structural view of a portion a in fig. 1 of a safety valve according to the present invention.

In the figure: the device comprises a valve seat 1, a water outlet pipe 2, an installation pipe 3, a connecting cover 4, a valve cover 5, a valve rod 6, a flow hole 7, a sealing ring 8, a rotating rod 9, a baffle plate 10, a warped rod 11, a limiting cover 12, a limiting rod 13, a limiting ring 14, an extension spring 15, a sealing filler 16, a supporting plate 17, a screw rod 18 and a nut 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a safety valve comprises a valve seat 1, a water inlet is arranged on the right side of the valve seat 1, a water outlet pipe 2 is fixedly arranged on the inner wall of the bottom of the valve seat 1, a valve cover 5 is connected in the water outlet pipe 2 in a sealing and sliding manner, a flow hole 7 is arranged on the inner wall of the right side of the valve cover 5, the valve cover 5 is arranged and can adjust the flow rate through the longitudinal movement of the valve cover 5, a mounting pipe 3 is fixedly communicated with the top of the valve seat 1, a connecting cover 4 is fixedly communicated with the top end of the mounting pipe 3, a valve rod 6 is fixedly connected with the top of the valve cover 5, the valve rod 6 is arranged and can drive the valve cover 5 to move, the top end of the valve rod 6 respectively penetrates through the valve seat 1 and the mounting pipe 3 and extends into the connecting cover 4, a baffle 10 is fixedly arranged on the top end of the valve rod 6, the baffle 10 can drive the valve rod 6 to move when a tilting rod 11 rotates, a slide hole is arranged on the inner wall of the left side of the connecting cover 4, the left side of baffle 10 runs through the slide opening and extends to the left side of connecting cover 4, and the left side of connecting cover 4 is connected with drive assembly, and drive assembly cooperatees with baffle 10, is connected with reset assembly on the valve rod 6, and reset assembly is connected with the right side inner wall of installation pipe 3.

The tilting rod 11 is driven to rotate by rotating the screw rod 18, so that the valve cover 5 can be driven to longitudinally move through the valve rod 6, and the flow can be adjusted.

According to the utility model, the sealing ring 8 is fixedly arranged on the inner wall of the mounting pipe 3, the sealing filler 16 is fixedly arranged in the sealing ring 8, the valve rod 6 penetrates through the sealing filler 16 and is in sealing sliding connection with the sealing filler 16, and the sealing filler 16 is arranged to realize sealing sliding limit of the valve rod 6, so that the problem of leakage of the safety valve can be prevented.

According to the utility model, the transmission assembly comprises the tilting rod 11 and the threaded component, the top end of the tilting rod 11 is rotatably connected with the top of the left side of the connecting cover 4, the tilting rod 11 is contacted with the bottom of the baffle plate 10, the threaded component is respectively connected with the tilting rod 11 and the left side of the connecting cover 4, and the transmission assembly is arranged to conveniently drive the valve rod 6 to move upwards so as to realize flow regulation.

According to the utility model, the threaded member comprises a support plate 17, a screw rod 18 and a nut 19, the support plate 17 is rotatably connected to the left side of the installation pipe 3, the screw rod 18 is rotatably connected with the left side of the support plate 17, the screw rod 18 penetrates through the nut 19 and is in threaded connection with the nut 19, the nut 19 is rotatably connected with the bottom of the front side of the tilting rod 11, and the threaded member is arranged to be capable of driving the tilting rod 11 to rotate when the screw rod 18 is rotated, so that the baffle plate 10 can be pushed to move longitudinally.

In the utility model, the reset assembly comprises a connecting limit cover 12, a sliding component, an extension spring 15 and a rotating rod 9, wherein the limit cover 12 is fixedly arranged at the front side of the valve rod 6, the sliding component is connected in the limit cover 12 and is rotatably connected with the rotating rod 9, the right end of the rotating rod 9 is rotatably connected with the right inner wall of the mounting pipe 3, the extension spring 15 is positioned in the limit cover 12, the left end and the right end of the extension spring 15 are respectively connected with the left inner wall of the limit cover 12 and the sliding component, and the reset assembly is arranged to provide necessary reset force when the valve rod 6 moves downwards.

In the utility model, the sliding component comprises a limiting rod 13, a limiting ring 14 and a connecting shaft, the limiting rod 13 is fixedly arranged in a limiting cover 12, the limiting ring 14 is sleeved on the limiting rod 13 in a sliding manner, the connecting shaft is rotatably connected with the front side of the limiting ring 14, the connecting shaft penetrates through the rotating rod 9 and is fixedly connected with the rotating rod 9, the extension spring 15 is sleeved on the limiting rod 13, the right end of the extension spring 15 is fixedly connected with the left side of the limiting ring 14 to form a sliding component, the sliding component can drive the rotating rod 9 to rotate when the limiting cover 12 longitudinally moves, and the extension spring 15 can be in a stressed state through the rotation of the rotating rod 9.

The working principle is as follows: the nut 19 can be driven to move towards the left side by rotating the screw rod 18, at the moment, the tilting rod 11 can be driven to rotate upwards under the driving of the nut 19, when the tilting rod 11 rotates upwards, the baffle plate 10 can be pushed to move upwards, when the baffle plate 10 moves, the valve rod 6 can be driven to move upwards, at the moment, the valve cover 5 can be driven to move upwards, the flow hole 7 can be moved into the valve seat 1 to be communicated with the valve seat 1, and the communication area between the flow hole 7 and the valve seat 1 can be continuously increased along with the increase of the displacement of the upward movement of the valve cover 5, so that the flow can be adjusted, when the valve rod 6 moves upwards, the limit cover 12 can be driven to move upwards, at the moment, under the sliding fit of the limit ring 14 and the limit rod 13, the rotating rod 9 can be driven to rotate upwards, and when the rotating rod 9 rotates upwards, can drive spacing ring 14 and remove to the right side, alright be in the stress state for extension spring 15, extension spring 15 that is in the stress state can provide necessary restoring force when valve rod 6 moves downwards, so when using, can adjust the flow of relief valve as required, consequently has good practicality.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A safety valve comprises a valve seat (1), wherein a water inlet is formed in the right side of the valve seat (1), the safety valve is characterized in that a water outlet pipe (2) is fixedly installed on the inner wall of the bottom of the valve seat (1), a valve cover (5) is connected in the water outlet pipe (2) in a sealing and sliding mode, a flow hole (7) is formed in the inner wall of the right side of the valve cover (5), an installation pipe (3) is fixedly communicated with the top of the valve seat (1), a connecting cover (4) is fixedly communicated with the top end of the installation pipe (3), a valve rod (6) is fixedly connected with the top end of the valve cover (5), the top end of the valve rod (6) penetrates through the valve seat (1) and the installation pipe (3) respectively and extends into the connecting cover (4), a baffle (10) is fixedly installed at the top end of the valve rod (6), a sliding hole is formed in the inner wall of the left side of the connecting cover (4), and the left side of the baffle (10) penetrates through the sliding hole and extends to the left side of the connecting cover (4), the left side of connecting cover (4) is connected with drive assembly, drive assembly cooperatees with baffle (10), be connected with reset assembly on valve rod (6), reset assembly is connected with the right side inner wall of installation pipe (3).

2. A safety valve according to claim 1, wherein the mounting tube (3) has a sealing ring (8) fixedly mounted on its inner wall, and a sealing packing (16) is fixedly mounted in the sealing ring (8), and the valve stem (6) extends through the sealing packing (16) and is in sealing sliding connection with the sealing packing (16).

3. The safety valve according to claim 1, characterized in that the transmission assembly comprises a tilting rod (11) and a screw member, the top end of the tilting rod (11) is rotatably connected with the top of the left side of the connecting cover (4), the tilting rod (11) is in contact with the bottom of the baffle (10), and the screw member is respectively connected with the tilting rod (11) and the left side of the connecting cover (4).

4. A safety valve according to claim 3, characterized in that the screw member comprises a support plate (17), a screw rod (18) and a nut (19), the support plate (17) is rotatably connected to the left side of the mounting tube (3), the screw rod (18) is rotatably connected to the left side of the support plate (17), the screw rod (18) penetrates through the nut (19) and is in threaded connection with the nut (19), and the nut (19) is rotatably connected to the bottom of the front side of the tilting rod (11).

5. A safety valve according to claim 1, characterized in that the reset assembly comprises a connecting limit cover (12), a sliding member, an extension spring (15) and a rotating rod (9), the limit cover (12) is fixedly arranged at the front side of the valve rod (6), the sliding member is connected in the limit cover (12), the sliding member is rotatably connected with the rotating rod (9), the right end of the rotating rod (9) is rotatably connected with the right inner wall of the mounting pipe (3), the extension spring (15) is arranged in the limit cover (12), and the left end and the right end of the extension spring (15) are respectively connected with the left inner wall of the limit cover (12) and the sliding member.

6. A safety valve according to claim 5, characterized in that the sliding member comprises a limiting rod (13), a limiting ring (14) and a connecting shaft, the limiting rod (13) is fixedly installed in the limiting cover (12), the limiting ring (14) is slidably sleeved on the limiting rod (13), the connecting shaft is rotatably connected with the front side of the limiting ring (14), the connecting shaft penetrates through the rotating rod (9) and is fixedly connected with the rotating rod (9), the extension spring (15) is sleeved on the limiting rod (13), and the right end of the extension spring (15) is fixedly connected with the left side of the limiting ring (14).