CN216923267U

CN216923267U - Suction valve of central oxygen supply system

Info

Publication number: CN216923267U
Application number: CN202123179789.6U
Authority: CN
Inventors: 徐程; 徐东; 徐飞
Original assignee: Guangzhou Lanjing Environmental Protection Technology Development Co ltd
Current assignee: Guangzhou Lanjing Environmental Protection Technology Development Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-07-08
Anticipated expiration: 2031-12-17

Abstract

The utility model discloses an attraction valve of a central oxygen supply system, which comprises a valve body, wherein a metal shell is fixedly arranged at the middle position of the upper end surface of the valve body, a stepping motor is fixedly arranged at the middle position of the upper end surface of the metal shell, a rotating shaft is connected at the middle position of the lower end surface of the stepping motor, the stepping motor is connected with the rotating shaft through a coupling, a through hole is formed in the outer side of the rotating shaft, a circular limiting groove extending into the metal shell is formed in the inner wall of the through hole, a limiting ring fixedly sleeved on the outer surface of the rotating shaft is arranged in the circular limiting groove, the lower end of the through hole extends to the inner wall of a cylindrical groove in the metal shell, and a cylindrical block positioned in the cylindrical groove is fixedly arranged on the lower end surface of the rotating shaft. The suction valve of the central oxygen supply system can effectively prevent gas leakage through the threaded sealing structure, thereby greatly increasing the sealing property of the valve body.

Description

Suction valve of central oxygen supply system

Technical Field

The utility model relates to the technical field of valves, in particular to an attraction valve of a central oxygen supply system.

Background

With the increasingly rapid development of life needs and technological progress of people, valves can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and the valves are divided into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316 and the like), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves and the like according to the materials.

However, the existing oxygen supply center suction valve has poor sealing performance, and a gap is formed at a vent after the valve is closed; therefore, the existing requirement is not met, and a suction valve of a central oxygen supply system is provided for the requirement.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a suction valve of a central oxygen supply system, so as to solve the problems of the prior art that a gap is formed at a vent after the valve is closed.

In order to achieve the purpose, the utility model provides the following technical scheme: a suction valve of a central oxygen supply system comprises a valve body, wherein a metal shell is fixedly arranged at the middle position of the upper end face of the valve body, a stepping motor is fixedly arranged at the middle position of the upper end face of the metal shell, a rotating shaft is connected with the middle position of the lower end face of the stepping motor, the stepping motor is connected with the rotating shaft through a coupling, an opening is formed in the outer side of the rotating shaft, a circular limiting groove extending into the metal shell is formed in the inner wall of the opening, a limiting ring fixedly sleeved on the outer surface of the rotating shaft is arranged in the circular limiting groove, the lower end of the opening extends to the inner wall of a cylindrical groove in the metal shell, a cylindrical block located in the cylindrical groove is fixedly arranged on the lower end face of the rotating shaft, a cuboid groove extending into the cylindrical block is formed in the middle position of the lower end face of the cylindrical block, the inside in cuboid groove is equipped with square limiting plate, the fixed external screw thread axle that is equipped with in intermediate position of terminal surface under the square limiting plate, the outside of external screw thread axle is equipped with the internal thread opening, the one end of internal thread opening is located the inner wall in cuboid groove, the other end of internal thread opening extends to metal casing's surface, the lower terminal surface of external screw thread axle is equipped with the sealed thread head that is located the valve body inside through the lower terminal surface that runs through the internal thread opening and extend to the inside of valve body and external screw thread axle, the below of sealed thread head is equipped with the isolated board with valve body inner wall fixed connection, one side of isolated board surface is equipped with the internal thread vent that has run through isolated board, the position of internal thread vent is corresponding with the position of sealed thread head.

Preferably, the valve body is connected with the metal shell through a flange.

Preferably, the stepping motor is electrically connected with a power supply.

Preferably, the outer surface of the sealing thread head is provided with external threads, the inner wall of the internal thread ventilation opening is provided with internal threads, and the external threads of the sealing thread head and the internal threads of the internal thread ventilation opening correspond to each other.

Preferably, the outer surface of the external screw shaft extends over the external screw thread, the inner wall of the internal screw thread through opening extends over the internal screw thread, and the external screw thread of the external screw shaft corresponds to the internal screw thread of the internal screw thread through opening.

Preferably, the rotating shaft is fixedly connected with the limiting ring through socket joint, the outer surface of the limiting ring is closely attached to the inner wall of the circular limiting groove, and the limiting ring is connected with the circular limiting groove through a roller bearing.

Preferably, the outer surface of the square limiting plate is closely attached to the inner wall of the rectangular groove, and the square limiting plate is connected with the external thread shaft through welding.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the sealing performance of the valve is improved through the thread sealing structure, and the connection strength between structures and the sealing performance between the structures are ensured, so that gas is prevented from leaking from the internal thread vent;

2. when the rotating shaft is rotated to control the opening and closing of the valve body, the limiting ring sleeved on the outer surface of the rotating shaft can rotate in the circular limiting groove, the outer surface of the limiting ring is in sealing fit with the inner wall of the circular limiting groove, the limiting ring is connected with the circular limiting groove through the roller bearing, and the rotating shaft can be effectively prevented from falling off or being misplaced through the limiting ring and the circular limiting groove, so that the stability between structures is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a front view of the overall internal structure of the present invention;

FIG. 3 is an enlarged view of the internal structure of FIG. 2 at A;

fig. 4 is an enlarged view of the internal structure of fig. 2 at B.

In the figure: 1. a valve body; 2. a stepping motor; 3. a metal housing; 4. an insulating panel; 5. a port; 6. a limiting ring; 7. a cylindrical groove; 8. a cylindrical block; 9. a square limiting plate; 10. a rectangular parallelepiped trough; 11. An externally threaded shaft; 12. an internal thread through opening; 13. a rotating shaft; 14. a circular limiting groove; 15. sealing the thread head; 16. an internally threaded vent.

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.

The valve body 1 (model number Z12X), the stepping motor 2 (model number 5IK90RGUCF-5GU5K) and the spacing ring 16 (model number SCS16) can be purchased from the market or customized by a person.

Referring to fig. 1 to 4, an embodiment of the present invention includes: a suction valve of a central oxygen supply system comprises a valve body 1, a metal shell 3 is fixedly arranged at the middle position of the upper end face of the valve body 1, a stepping motor 2 is fixedly arranged at the middle position of the upper end face of the metal shell 3, a rotating shaft 13 is connected at the middle position of the lower end face of the stepping motor 2, the stepping motor 2 is connected with the rotating shaft 13 through a coupling, a through hole 5 is arranged at the outer side of the rotating shaft 13, a circular limiting groove 14 extending into the shell of the metal shell 3 is arranged on the inner wall of the through hole 5, a limiting ring 6 fixedly sleeved on the outer surface of the rotating shaft 13 is arranged inside the circular limiting groove 14, the lower end of the through hole 5 extends to the inner wall of a cylindrical groove 7 positioned inside the metal shell 3, a cylindrical block 8 positioned inside the cylindrical groove 7 is fixedly arranged on the lower end face of the rotating shaft 13, a cuboid groove 10 extending into the cylindrical block 8 is arranged at the middle position of the lower end face of the cylindrical block 8, the inside of cuboid groove 10 is equipped with square limiting plate 9, the fixed external screw thread axle 11 that is equipped with of intermediate position of terminal surface under the square limiting plate 9, the outside of external screw thread axle 11 is equipped with internal thread opening 12, the one end of internal thread opening 12 is located the inner wall of cuboid groove 10, the other end of internal thread opening 12 extends to metal casing 3's surface, the lower terminal surface of external screw thread axle 11 is equipped with the sealed thread head 15 that is located 1 inside of valve body through running through internal thread opening 12 and extending to valve body 1's inside and external screw thread axle 11's lower terminal surface is fixed, the below of sealed thread head 15 is equipped with isolation plate 4 with 1 inner wall fixed connection of valve body, one side of isolation plate 4 surface is equipped with the internal thread vent 16 that has run through isolation plate 4, the position of internal thread vent 16 is corresponding with sealed thread head 15's position.

Further, the valve body 1 is connected with the metal shell 3 through a flange.

Through adopting above-mentioned technical scheme, can fix metal casing 3 through the flange.

Further, the stepping motor 2 is electrically connected with a power supply.

By adopting the technical scheme, the stepping motor 2 can be started through the power supply.

Further, the outer surface of the sealing thread head 15 is provided with external threads, the inner wall of the internal thread ventilation opening 16 is provided with internal threads, and the external threads of the sealing thread head 15 correspond to the internal threads of the internal thread ventilation opening 16.

By adopting the technical scheme, the internal thread ventilation opening 16 can be sealed by sealing the thread head 15.

Further, the outer surface of the male screw shaft 11 extends over the male screw, the inner wall of the female screw through hole 12 extends over the female screw, and the male screw of the male screw shaft 11 and the female screw of the female screw through hole 12 correspond to each other.

Through adopting above-mentioned technical scheme, can reciprocate in the inside of internal thread through hole 12 through screw thread external screw thread axle 11.

Further, the rotating shaft 13 is fixedly connected with the limit ring 6 through socket joint, the outer surface of the limit ring 6 is closely attached to the inner wall of the circular limit groove 14, and the limit ring 6 is connected with the circular limit groove 14 through a roller bearing.

By adopting the technical scheme, the rotating shaft 13 can be prevented from falling off or being misplaced by the limiting ring 6.

Further, the outer surface of the square limiting plate 9 is closely attached to the inner wall of the rectangular groove 10, and the square limiting plate 9 is connected with the external threaded shaft 11 through welding.

Through adopting above-mentioned technical scheme, can drive external screw thread axle 11 rotatory through square limiting plate 9.

The working principle is as follows: when the valve body 1 is required to be closed, the stepping motor 2 is started, the rotating shaft 13 connected with the stepping motor 2 through the coupler can be rotated through the stepping motor 2, the cylindrical block 8 fixedly connected with the rotating shaft 13 can also rotate along with the rotating shaft 13 when the rotating shaft 13 rotates, the cuboid groove 10 extending into the cylindrical block 8 is arranged at the middle position of the lower end face of the cylindrical block 8, the square limiting plate 9 is arranged inside the cuboid groove 10, the outer surface of the square limiting plate 9 is closely attached to the inner wall of the cuboid groove 10, the square limiting plate 9 can also rotate along with the inner surface of the cuboid groove 10 when the cylindrical block 8 rotates, the external threaded shaft 11 fixedly connected with the square limiting plate 9 can also rotate along with the square limiting plate 9 when the square limiting plate 9 rotates, a part of the external threaded shaft 11 is positioned inside the internal threaded through hole 12, and the external threads on the outer surface of the external threaded shaft 11 correspond to the internal threads of the internal threaded through hole 12, the male screw shaft 11 rotated by the screw can be moved up and down inside the female screw through hole 12, when the male screw shaft 11 descends by rotation, the sealing thread head 15 on the lower end surface of the male screw shaft 11 also descends by rotation, and as the sealing thread head 15 descends, the sealing thread head 15 contacts the female thread ventilation opening 16 on the outer surface of the isolation plate 4, when the sealing thread head 15 contacts the female thread ventilation opening 16 and the sealing thread head 15 further rotates and descends, the sealing thread head 15 enters the inner part of the female thread ventilation opening 16, and after the sealing thread head 15 completely enters the inner part of the female thread ventilation opening 16, namely, the sealing is finished, when the valve body 1 needs to be opened, the rotating shaft 13 is rotated reversely, and the gas leakage can be effectively prevented through the thread sealing structure, so that the sealing performance of the valve body 1 is greatly improved;

when the switch of the valve body 1 is controlled by rotating the rotating shaft 13, the solid sleeve is sleeved on the limiting ring 6 on the outer surface of the rotating shaft 13 and can rotate in the circular limiting groove 14, the outer surface of the limiting ring 6 is in sealing fit with the inner wall of the circular limiting groove 14, the limiting ring 6 is connected with the circular limiting groove 14 through the roller bearing, the rotating shaft 13 can be effectively prevented from falling off or being misplaced through the limiting ring 6 and the circular limiting groove 14, the stability between structures is improved, and after the whole installation of the device is completed, the power supply is connected and can be used.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a central oxygen system's attraction valve, includes valve body (1), its characterized in that: the valve comprises a valve body (1), a metal shell (3) is fixedly arranged at the middle position of the upper end face of the valve body (1), a stepping motor (2) is fixedly arranged at the middle position of the upper end face of the metal shell (3), a rotating shaft (13) is connected to the middle position of the lower end face of the stepping motor (2), the stepping motor (2) is connected with the rotating shaft (13) through a coupling, an opening (5) is arranged on the outer side of the rotating shaft (13), a circular limiting groove (14) extending into the shell of the metal shell (3) is arranged on the inner wall of the opening (5), a limiting ring (6) fixedly sleeved on the outer surface of the rotating shaft (13) is arranged inside the circular limiting groove (14), the lower end face of the opening (5) extends to the inner wall of a cylindrical groove (7) located inside the metal shell (3), and a cylindrical block (8) located inside the cylindrical groove (7) is fixedly arranged on the lower end face of the rotating shaft (13), the middle position of the lower end face of the cylindrical block (8) is provided with a cuboid groove (10) extending to the inside of the cylindrical block (8), the inside of the cuboid groove (10) is provided with a square limiting plate (9), the middle position of the lower end face of the square limiting plate (9) is fixedly provided with an external threaded shaft (11), the outer side of the external threaded shaft (11) is provided with an internal threaded through hole (12), one end of the internal threaded through hole (12) is positioned on the inner wall of the cuboid groove (10), the other end of the internal threaded through hole (12) extends to the outer surface of the metal shell (3), the lower end face of the external threaded shaft (11) extends to the inside of the valve body (1) through penetrating through the internal threaded through hole (12), the lower end face of the external threaded shaft (11) is fixedly provided with a sealing threaded head (15) positioned inside the valve body (1), and an isolation plate (4) fixedly connected with the inner wall of the valve body (1) is arranged below the sealing threaded head (15), one side of the outer surface of the isolation plate (4) is provided with an internal thread ventilation opening (16) penetrating through the isolation plate (4), and the position of the internal thread ventilation opening (16) corresponds to the position of the sealing thread head (15).

2. The suction valve of a central oxygen supply system according to claim 1, wherein: the valve body (1) is connected with the metal shell (3) through a flange.

3. The suction valve of a central oxygen supply system according to claim 1, wherein: the stepping motor (2) is electrically connected with a power supply.

4. The suction valve of a central oxygen supply system according to claim 1, wherein: the outer surface of the sealing thread head (15) is provided with external threads, the inner wall of the internal thread ventilation opening (16) is provided with internal threads, and the external threads of the sealing thread head (15) correspond to the internal threads of the internal thread ventilation opening (16).

5. The suction valve of a central oxygen supply system according to claim 1, wherein: the surface of external screw thread axle (11) spreads throughout the external screw thread, the inner wall of internal thread opening (12) spreads throughout the internal thread, the external screw thread of external screw thread axle (11) corresponds each other with the internal thread of internal thread opening (12).

6. The suction valve of a central oxygen supply system according to claim 1, wherein: the rotating shaft (13) is fixedly connected with the limiting ring (6) through socket joint, the outer surface of the limiting ring (6) is closely attached to the inner wall of the circular limiting groove (14), and the limiting ring (6) is connected with the circular limiting groove (14) through a roller bearing.

7. The suction valve of a central oxygen supply system according to claim 1, wherein: the outer surface of the square limiting plate (9) is closely attached to the inner wall of the cuboid groove (10), and the square limiting plate (9) is connected with the external threaded shaft (11) through welding.