CN213088832U

CN213088832U - Liquid flow one-way valve

Info

Publication number: CN213088832U
Application number: CN202021717676.XU
Authority: CN
Inventors: 叶海游; 叶茂; 林微琴; 周谦; 王天贵; 刘海锋; 王西峰
Original assignee: CHINA HUAM DEVELOPMENT TECHNOLOGY CO LTD
Current assignee: CHINA HUAM DEVELOPMENT TECHNOLOGY CO LTD
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-04-30
Anticipated expiration: 2030-08-12

Abstract

A liquid flow check valve comprises a valve body and a swing plug, wherein the valve body comprises a valve seat and a valve cover, the valve seat is provided with a plug groove, a liquid inlet channel and a liquid outlet channel, the liquid inlet channel and the liquid outlet channel are respectively communicated with the plug groove through a first valve port and a second valve port, the first valve port is positioned above the second valve port, the valve cover covers the valve seat and seals the plug groove, the swing plug is hinged in the plug groove, the swing plug comprises a plug part and a floating part, the plug part is positioned between the first valve port and the second valve port, the floating part can drive the plug part to swing to close the first valve port through buoyancy in liquid, a protruding limiting part is arranged at the second valve port and used for limiting the maximum swing angle of the swing plug, the swing plug capable of swinging is used for controlling the opening and closing of the first valve port, and the buoyancy of the floating part in the liquid is used for replacing the traditional spring force, so that the swing plug has closing force and the automatic swinging capability.

Description

Liquid flow one-way valve

Technical Field

The utility model relates to a control valve technical field, concretely relates to flow check valve.

Background

The check valve is also called a check valve or a check valve, and is a control valve which controls fluid to flow in only one direction but cannot flow back.

The existing check valve basically adopts a spring to enable a valve core or a piston to close a valve port, the valve port is opened by inputting fluid (such as liquid) to overcome the elasticity of the spring, the spring can cause performance reduction under long-term compression and bouncing, the effect of the check valve is influenced, and the service life of the spring directly influences the service life of the check valve.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a flow check valve:

a liquid flow check valve comprises a valve body and a swing plug, wherein the valve body comprises a valve seat and a valve cover, the valve seat is provided with a plug groove, a liquid inlet channel and a liquid outlet channel, the liquid inlet channel and the liquid outlet channel are respectively communicated with the plug groove through a first valve port and a second valve port, the first valve port is positioned above the second valve port, the valve cover covers the valve seat and seals the plug groove, the swing plug is hinged in the plug groove, the swing plug comprises a plug portion and a floating portion, the plug portion is positioned between the first valve port and the second valve port, the floating portion can drive the plug portion to swing to close the first valve port through buoyancy in liquid, a protruding limiting portion is arranged at the second valve port, and the limiting portion is used for limiting the maximum swing angle of the swing plug.

Preferably, the first valve port is fixedly provided with an annular shoulder, and the annular shoulder and the plug part are in mutual magnetic attraction fit, so that the acting force of the plug part for closing the first valve port is improved.

Preferably, the outer end face of the annular shoulder is fixedly provided with a rubber layer, the rubber layer is used for abutting against the plug part in a fitting manner, the sealing performance of the plug part for closing the first valve port is improved, and the annular shoulder has the function of buffering impact protection.

Preferably, the valve seat is connected with the valve cover through the bolt that is equipped with, and is equipped with seal gasket between valve seat and the valve cover, the bolt includes an axle bolt, the axle bolt penetrates in the stopper groove, and the pendulum stopper articulates in the axle bolt, and the assembly of being convenient for just improves the leakproofness, appears damaging and leads to the pendulum stopper during operation difficulty at the axle bolt, is convenient for change the maintenance.

Preferably, the end of the shaft bolt is in threaded fit with a blind hole formed in the plug groove, so that the axial stability of the shaft bolt is improved, and the swing of the swing plug is more stable.

Preferably, the valve seat is connected with the valve cover in a threaded fit mode, a sealing ring is arranged at the joint, and the swing plug is hinged to an upright post arranged in the plug groove, so that the valve seat is convenient to manufacture and assemble quickly.

The utility model discloses following beneficial effect has: the swinging plug is used for controlling the opening and closing of the first valve port, and the buoyancy of the floating part in the liquid is adopted to replace the traditional spring force, so that the swinging plug has closing force and automatic swinging capacity.

Drawings

Fig. 1 is a schematic front view of a valve seat according to embodiment 1.

FIG. 2 is a sectional top view of example 1.

FIG. 3 is a partial sectional view schematically showing embodiment 1.

Fig. 4 is a schematic view of a valve seat elevation mechanism of embodiment 2.

FIG. 5 is a sectional top view of example 2.

1. Swinging a plug; 2. a valve seat; 3. a valve cover; 4. plugging the groove; 5. a liquid inlet channel; 6. a liquid outlet channel; 7. a first valve port; 8. a second valve port; 9. a plug portion; 10. a float section; 11. a restricting section; 12. an annular shoulder; 13. a rubber layer; 14. sealing gaskets; 15. an axle bolt; 16. blind holes; 17. a seal ring; 18. and (4) a column.

Detailed Description

The present invention will be further described with reference to fig. 1 to 5 and embodiments 1 and 2.

Example 1:

a kind of liquid flow check valve, including valve block and pendulum plug 1, the valve block includes valve block 2 and valve bonnet 3, the valve block 2 has plug slot 4, enter liquid channel 5 and fluid outlet duct 6 and connect to plug slot 4 through the first valve port 7 and second valve port 8 separately, and the first valve port 7 locates above the second valve port 8, the valve bonnet 3 covers and closes on the valve block 2 and closes the plug slot 4, the valve block 2 is connected with valve bonnet 3 through the bolt equipped, and there are gasket seals 14 between valve block 2 and valve bonnet 3, the bolt includes an axle bolt 15, the axle bolt 15 penetrates in the plug slot 4 and the end screw thread of the axle bolt 15 cooperates with blind hole 16 equipped with plug slot 4, improve its axial stability, the pendulum plug 1 locates in plug slot 4 and articularly connects to the axle bolt 15, facilitate assembling and improve the sealing, when the axle bolt 15 is damaged and causes the work difficulty of pendulum plug 1, is convenient for replacement and maintenance.

The swing plug 1 comprises a plug portion 9 and a floating portion 10, the plug portion 9 is located between a first valve port 7 and a second valve port 8, the floating portion 10 can drive the plug portion 9 to swing to close the first valve port 7 through buoyancy in liquid, an annular shoulder 12 is fixedly arranged at the first valve port 7, the annular shoulder 12 and the plug portion 9 are in mutual magnetic attraction fit, acting force of the plug portion 9 for closing the first valve port 7 is improved, a rubber layer 13 is fixedly arranged on the outer end face of the annular shoulder 12, the rubber layer 13 is used for being attached and abutted to the plug portion 9, sealing performance of the plug portion 9 for closing the first valve port 7 is improved, buffering impact protection is achieved on the shoulder, a protruding limiting portion 11 is arranged at the second valve port 8, the limiting portion 11 is used for limiting the maximum swing angle of the swing plug 1, and the swing plug 1 is prevented from blocking the second valve port 8.

The operation principle is as follows: liquid is input into the valve seat 2 from the liquid inlet channel 5, the whole swing plug 1 is jacked open by overcoming the magnetic attraction between the annular protruding shoulder 12 and the plug part 9, the swing plug 1 swings downwards, the first valve port 7 is opened, partial buoyancy of the floating part 10 needs to be overcome when the plug groove 4 is filled with the liquid, when the impact force of the liquid is large, the swing plug 1 butts against the limiting part 11, the swing plug 1 can not block the second valve port 8, the liquid flows to the liquid outlet channel 6 from the second valve port 8 after entering the plug groove 4 from the first valve port 7, when the input of the liquid is stopped, the impact force borne by the swing plug 1 disappears, the buoyancy of the floating part 10 drives the swing plug 1 to swing back, the plug part 9 is enabled to recover the magnetic attraction state with the annular protruding shoulder 12, the first valve port 7 is closed, and liquid backflow is blocked.

It should be noted that, pendulum stopper 1 receives the pulling of magnetism effort and buoyancy simultaneously in stopper groove 4, and when pendulum stopper 1 lower hem was to great angle, magnetism effort can reduce, and it probably can't make pendulum stopper 1 pendulum back to rely on magnetism effort alone, but buoyancy still can pull the pendulum back to pendulum stopper 1 this moment, when pendulum stopper 1 pendulum back to magnetism effort is enough big, pendulum stopper 1 can be closed first valve port 7 in the twinkling of an eye for block the speed of backward flow.

Example 2:

the utility model provides a liquid flow check valve, including valve body and pendulum stopper 1, the valve body includes disk seat 2 and valve gap 3, disk seat 2 is equipped with stopper groove 4, go into liquid passageway 5 and liquid outlet channel 6, it communicates in stopper groove 4 through first valve port 7 and second valve port 8 respectively to go into liquid passageway 5 and liquid outlet channel 6, and first valve port 7 is located the top of second valve port 8, valve gap 3 lid closes on disk seat 2 and seals stopper groove 4, disk seat 2 passes through screw-thread fit with valve gap 3 and is connected, and be equipped with sealing washer 17 in the junction, pendulum stopper 1 is arranged in stopper groove 4 and articulates the stand 18 that is equipped with in stopper groove 4, easy manufacturing, and rapid Assembly.

The operation principle is as follows: liquid is input into the valve seat 2 from the liquid inlet channel 5, the whole swing plug 1 is jacked open by overcoming the magnetic attraction between the annular protruding shoulder 12 and the plug part 9, the swing plug 1 swings downwards, the first valve port 7 is opened, partial buoyancy of the floating part 10 needs to be overcome when the plug groove 4 is filled with the liquid, when the impact force of the liquid is large, the swing plug 1 butts against the limiting part 11, the swing plug 1 can not block the second valve port 8, the liquid flows to the liquid outlet channel 6 from the second valve port 8 after entering the plug groove 4 from the first valve port 7, when the input of the liquid is stopped, the impact force borne by the swing plug 1 disappears, the buoyancy of the floating part 10 drives the swing plug 1 to swing back, the plug part 9 is enabled to recover the magnetic attraction state with the annular protruding shoulder 12, and the first valve port 7 is closed, and liquid backflow is blocked.

It should be understood that the above examples 1 and 2 of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. There is no need or no way to give poor examples of all embodiments. And that such obvious changes and modifications are within the scope of the present invention as defined by the appended claims.

Claims

1. A flow check valve characterized by: the valve comprises a valve body and a swing plug (1), wherein the valve body comprises a valve seat (2) and a valve cover (3), the valve seat (2) is provided with a plug groove (4), a liquid inlet channel (5) and a liquid outlet channel (6), the liquid inlet channel (5) and the liquid outlet channel (6) are respectively communicated with the plug groove (4) through a first valve port (7) and a second valve port (8), the first valve port (7) is positioned above the second valve port (8), the valve cover (3) covers the valve seat (2) and seals the plug groove (4), the swing plug (1) is hinged in the plug groove (4), the swing plug (1) comprises a plug part (9) and a floating part (10), the plug part (9) is positioned between the first valve port (7) and the second valve port (8), the floating part (10) can drive the plug part (9) to swing to close the first valve port (7) through buoyancy in liquid, the second valve port (8) is provided with a protruding limiting part (11), and the limiting part (11) is used for limiting the maximum swing angle of the swing plug (1).

2. A fluid flow check valve as defined in claim 1 wherein: an annular shoulder (12) is fixedly arranged at the first valve port (7), and the annular shoulder (12) and the plug part (9) are mutually matched in a magnetic attraction manner.

3. A fluid flow check valve as defined in claim 2 wherein: the outer end face of the annular shoulder (12) is fixedly provided with a rubber layer (13), and the rubber layer (13) is used for attaching and abutting the plug part (9).

4. A fluid flow check valve as defined in claim 1 wherein: the valve seat (2) is connected with the valve cover (3) through a bolt, a sealing gasket (14) is arranged between the valve seat (2) and the valve cover (3), the bolt comprises an axle bolt (15), the axle bolt (15) penetrates into the plug groove (4), and the swing plug (1) is hinged to the axle bolt (15).

5. A fluid flow check valve as defined in claim 4 wherein: the tail end of the shaft bolt (15) is in threaded fit with a blind hole (16) formed in the plug groove (4).

6. A fluid flow check valve as defined in claim 1 wherein: the valve seat (2) is connected with the valve cover (3) in a threaded fit mode, a sealing ring (17) is arranged at the joint of the valve seat and the valve cover, and the swing plug (1) is hinged to an upright post (18) arranged in the plug groove (4).