CN216812858U

CN216812858U - Novel pressure reducing valve with good sealing performance

Info

Publication number: CN216812858U
Application number: CN202122729364.1U
Authority: CN
Inventors: 王烨
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-06-24
Anticipated expiration: 2031-11-09

Abstract

The utility model discloses a novel pressure reducing valve with good sealing performance, which comprises a valve body, wherein an air inlet is fixedly formed in one side of the valve body, an air outlet is fixedly formed in the other side of the valve body, a hemispherical cavity is fixedly formed in the middle of the upper end face of the valve body, an external connecting port is fixedly formed in the middle of the hemispherical cavity, a pressure regulating spring is sleeved at the inner end of the external connecting port, a piston is fixedly connected to the lower end face of the pressure regulating spring, a valve rod is movably sleeved at the inner end of the piston and comprises a valve head, a protective sleeve and a bolt rod, a threaded hole is fixedly formed in the valve head, a locking nut is sleeved on the outer wall of the lower end of the bolt rod in a threaded manner, and the locking nut is arranged at the lower end of the piston. The device has the advantages of simple structure, good air tightness, long service life, easy disassembly and replacement of the valve rod structure, and material and cost saving.

Description

Novel pressure reducing valve with good sealing performance

Technical Field

The utility model relates to the field of pressure reducing valves, in particular to a novel pressure reducing valve with good sealing performance.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, that is, the flow speed and the kinetic energy of the fluid are changed by changing the throttling area, so as to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the adjustment of the control and adjustment system, so that the pressure behind the valve is kept constant within a certain error range.

When traditional relief pressure valve used, its inside metal valve rod can lead to the surface to have some slight holes because of the characteristic of metal, consequently is used in this kind of the higher equipment of gas tightness requirement of steam conduit relief pressure valve, and these slight pore lead to sealed effect not good enough, probably have the leakage problem, and based on this, we provide a novel relief pressure valve that the leakproofness is good and improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a novel pressure reducing valve with good sealing property.

In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a novel relief pressure valve that leakproofness is good, includes the valve body, the fixed air inlet of having seted up in valve body one side, the fixed gas outlet of having seted up of valve body opposite side, the fixed hemisphere chamber that is provided with of valve body up end middle part position department, the fixed external connection mouth that is provided with in hemisphere chamber middle part, the inner pot head of external connection mouth is equipped with pressure regulating spring, terminal surface fixedly connected with piston under the pressure regulating spring, the movable sleeve of piston inner is equipped with the valve rod, the valve rod includes valve head, protective sheath and shank of bolt, the fixed screw hole of seting up on the valve head, the screw thread has cup jointed lock nut on the shank of bolt lower extreme outer wall, lock nut sets up at the piston lower extreme.

As a further description of the above technical solution:

and the inner wall of the external connector is sleeved with a sealing plug in a threaded manner.

As a further description of the above technical solution:

the middle part of the external connector is fixedly provided with a channel, and the pressure regulating spring is fixedly connected to the lower end face of the channel.

As a further description of the above technical solution:

the upper end face of the piston is fixedly connected with a sealing gasket, and the side of the sealing gasket is fixedly connected to the inner wall of the hemispherical cavity.

As a further description of the above technical solution:

and a pressure gauge is fixedly arranged on one side of the hemispherical cavity.

As a further description of the above technical solution:

the protective sleeve is sleeved at the outer end of the bolt rod, and the bolt rod is in threaded connection with the threaded hole.

As a further description of the above technical solution:

the outer end of the valve head is wrapped by PTFE material.

As a further description of the above technical solution:

the valve body both sides are fixed respectively and are provided with the baffle, the fixed annular pad that is provided with between the baffle.

The utility model has the following beneficial effects:

1. according to the novel pressure reducing valve with good sealing performance, the conical valve head is arranged, and the PTFE material is coated on the outer surface of the conical valve head, so that the valve rod is driven to ascend when the piston ascends, the valve head is driven to abut against a channel, the valve rod is in soft contact with a channel hole, and better sealing performance is realized.

2. According to the novel pressure reducing valve with good sealing performance, the outer surface of the valve head is wrapped by the PTFE material, so that the valve head can be protected, the abrasion degree of the valve head is reduced, and the service life of the valve head is prolonged.

3. The novel pressure reducing valve with good sealing performance is simple in structure, good in air tightness and long in service life, and the valve rod structure is easy to disassemble and replace, so that materials and cost are saved.

Drawings

Fig. 1 is a schematic view of an internal structure of a novel pressure reducing valve with good sealing performance according to the present invention;

FIG. 2 is a schematic structural view of a valve stem of the novel pressure reducing valve with good sealing performance;

FIG. 3 is an exploded view of a valve stem of the novel pressure reducing valve with good sealing performance;

fig. 4 is a schematic diagram of the internal structure of the valve head of the novel pressure reducing valve with good sealing performance.

Illustration of the drawings:

1. a valve body; 2. an air inlet; 3. an air outlet; 4. a hemispherical cavity; 5. an external connection port; 6. a sealing plug; 7. a channel; 8. a pressure regulating spring; 9. a piston; 10. a gasket; 11. a pressure gauge; 12. a valve stem; 13. a valve head; 14. a protective sleeve; 15. a bolt shank; 16. a threaded hole; 17. locking the nut; 18. a baffle plate; 19. a ring-shaped cushion.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, one embodiment of the present invention is provided: the utility model provides a novel relief pressure valve that leakproofness is good, including

valve body

1, 1 one side of valve body is fixed has seted up

air inlet

2, 1 opposite side of valve body is fixed has seted up

gas outlet

3, 1 up end middle part of valve body position department is fixed and is provided with

hemisphere chamber

4, 4 fixed external connection mouth 5 that are provided with in the middle part of hemisphere chamber, the pot head is equipped with pressure regulating spring 8 in external connection mouth 5, terminal surface fixedly connected with piston 9 under the pressure regulating spring 8, the movable cover of piston 9 inner is equipped with valve rod 12, valve rod 12 includes valve head 13, protective sheath 14 and shank of bolt 15, fixed threaded hole 16 has been seted up on the valve head 13, the screw has cup jointed lock nut 17 on the 15 lower extreme outer walls of shank of bolt, lock nut 17 sets up at piston 9 lower extreme.

The inner wall of the external connecting port 5 is sleeved with a sealing plug 6 in a threaded manner.

The middle part of the external connector 5 is fixedly provided with a channel 7, and the pressure regulating spring 8 is fixedly connected to the lower end face of the channel 7.

The upper end surface of the piston 9 is fixedly connected with a sealing gasket 10, and the side of the sealing gasket 10 is fixedly connected to the inner wall of the hemispherical cavity 4.

A pressure gauge 11 is fixedly arranged on one side of the hemispherical cavity 4.

The protective sleeve 14 is sleeved on the outer end of the bolt rod 15, and the bolt rod 15 is in threaded connection with the threaded hole 16.

The outer end of the valve head 13 is wrapped by PTFE material.

The two sides of the valve body 1 are respectively and fixedly provided with a baffle 18, an annular pad 19 is fixedly arranged between the baffles 18, and the piston 9 and the annular pad 19 are matched to block an air passage between the air inlet 2 and the air outlet 3 in a natural state.

The working principle is as follows: when the device is used, gas enters the valve body 1 from the gas inlet 2, the piston 9 is jacked up along with the increase of the gas pressure, the piston 9 rises and simultaneously drives the sealing gasket 10 and the valve rod 12 to rise, and further drives the valve head 13 to block the channel 7, so that secondary sealing is realized, and the gas pressure in the hemispherical cavity 4 and the gas pressure circulating in the valve body 1 tend to be balanced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a novel relief pressure valve that leakproofness is good, includes valve body (1), its characterized in that: an air inlet (2) is fixedly arranged on one side of the valve body (1), an air outlet (3) is fixedly arranged on the other side of the valve body (1), a semi-spherical cavity (4) is fixedly arranged at the middle position of the upper end surface of the valve body (1), an external connecting port (5) is fixedly arranged in the middle of the hemispherical cavity (4), a pressure regulating spring (8) is sleeved at the inner end of the external connecting port (5), a piston (9) is fixedly connected with the lower end surface of the pressure regulating spring (8), a valve rod (12) is movably sleeved at the inner end of the piston (9), the valve rod (12) comprises a valve head (13), a protective sleeve (14) and a bolt rod (15), the valve head (13) is fixedly provided with a threaded hole (16), the outer wall of the lower end of the bolt rod (15) is in threaded sleeve connection with a locking nut (17), and the locking nut (17) is arranged at the lower end of the piston (9).

2. The pressure reducing valve according to claim 1, wherein: and a sealing plug (6) is sleeved on the inner wall of the external connector (5) in a threaded manner.

3. The pressure reducing valve according to claim 1, wherein: the middle part of the external connector (5) is fixedly provided with a channel (7), and the pressure regulating spring (8) is fixedly connected to the lower end face of the channel (7).

4. The pressure reducing valve according to claim 1, wherein: the upper end face of the piston (9) is fixedly connected with a sealing gasket (10), and the edge side of the sealing gasket (10) is fixedly connected to the inner wall of the hemispherical cavity (4).

5. The pressure reducing valve according to claim 1, wherein: and a pressure gauge (11) is fixedly arranged on one side of the hemispherical cavity (4).

6. The pressure reducing valve according to claim 1, wherein: the protective sleeve (14) is sleeved at the outer end of the bolt rod (15), and the bolt rod (15) is in threaded connection with the threaded hole (16).

7. The pressure reducing valve according to claim 1, wherein: the outer end of the valve head (13) is wrapped by PTFE material.

8. The pressure reducing valve according to claim 1, wherein: the valve is characterized in that baffle plates (18) are respectively fixedly arranged on two sides of the valve body (1), and annular gaskets (19) are fixedly arranged between the baffle plates (18).