CN215522105U

CN215522105U - Two-way check valve

Info

Publication number: CN215522105U
Application number: CN202121920284.8U
Authority: CN
Inventors: 宋艳方; 方小英
Original assignee: Shaanxi Qisheng Energy Co ltd
Current assignee: Shaanxi Qisheng Energy Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-01-14
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a two-way check valve which comprises a valve pipe, wherein a pair of sealing plates are symmetrically and fixedly connected to two sides in the valve pipe, a flow opening is formed in each sealing plate, sliding grooves are formed in the top and the bottom of the inner sides in the valve pipe, sliding plates are connected between the inner walls of the sliding grooves in a sliding mode, the sliding plates are elastically connected to the side walls of the sealing plates through springs, a sealing mechanism used for sealing the flow opening is installed at one end, away from the sliding grooves, of each sliding plate, and a threaded rod is rotatably connected between the side walls, opposite to the pair of sealing plates. The check valve is provided with the sliding plate, the sealing plate, the flow port, the sealing plug and the like, so that the one-way flow limiting function of the check valve can be realized, and when the one-way flow limiting function is reversely realized, the flow limiting direction of the check valve can be changed by only rotating the handle and replacing the sliding plate with the resistance rod for obstructing sliding, so that the check valve does not need to be disassembled and replaced, and the use convenience of the check valve is improved.

Description

Two-way check valve

Technical Field

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

Background

The check valve is a valve which automatically opens and closes a valve clack depending on the flowing of a medium and is used for preventing the medium from flowing backwards, and is also called a check valve, a reverse flow valve and a back pressure valve.

However, the check valve in the prior art has a certain problem, the function of preventing the media from flowing backwards only has a unidirectional property, and when the media are required to be reversely prevented from flowing backwards, the check valve needs to be disassembled and replaced, so that the unidirectional flow limiting direction of the check valve is replaced, and certain inconvenience exists when the check valve is used, and therefore a bidirectional check valve needs to be provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a bidirectional check valve.

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

the utility model provides a two-way check valve, includes the valve pipe, a pair of closing plate of bilateral symmetry fixedly connected with in the valve pipe, the circulation mouth has been seted up on the closing plate, the sliding tray has all been seted up on top and the interior bottom in the valve pipe in both sides, equal sliding connection has the sliding plate between the inner wall of sliding tray, the sliding plate passes through spring elastic connection and is in on the closing plate lateral wall, the sliding plate is kept away from the one end of sliding tray is installed and is used for sealing the sealing mechanism of circulation mouth is a pair of the closing plate rotates between the opposite side wall and is connected with the threaded rod, install on the threaded rod and be used for blockking sliding plate horizontal slip's resistance mechanism, install on the threaded rod and be used for driving threaded rod pivoted actuating mechanism.

Preferably, the sealing mechanism includes a sealing plug and a bent rod, the sealing plug is matched with the flow port, one end of the bent rod is fixedly connected to the end of the sliding plate, and the other end of the bent rod is fixedly connected to the side wall of the sealing plug.

Preferably, the resistance mechanism comprises a threaded sleeve and a pair of resistance rods, the threaded sleeve is in threaded connection with the threaded rod, the pair of resistance rods are fixedly connected to the upper end of the threaded sleeve, and the pair of resistance rods respectively penetrate through the other end of the sealing plate close to the upper end of the threaded sleeve.

Preferably, the driving mechanism comprises a first bevel gear and a second bevel gear, the first bevel gear is coaxially and fixedly connected to the end of the threaded rod, the second bevel gear is rotatably connected to the top of the valve pipe through a rotating shaft, the first bevel gear is meshed with the second bevel gear, and a power mechanism for providing power for the rotation of the second bevel gear is mounted on the rotating shaft.

Preferably, the power mechanism comprises a handle, the rotating shaft extends to the upper part of the valve pipe, and the handle is fixedly connected to the upper end of the rotating shaft.

Preferably, the joint of the rotating shaft and the valve pipe is wrapped by a sealing ring.

The utility model has the following beneficial effects:

1. by arranging the sliding plate, the sealing plate, the flow opening and the sealing plug, when fluid flows from an undefined direction, the flow force of the fluid can push the sliding plate to slide, so that the sealing plug is pushed to block the flow opening, and the one-way flow limiting function of the check valve can be realized;

2. when the one-way current-limiting function is realized in the reverse direction of needs, only need turning handle, drive the threaded rod and rotate under first bevel gear and second bevel gear meshing to drive the threaded sleeve and drive two resistance bars and remove, change the resistance bar and hinder gliding sliding plate, can change check valve current-limiting direction, thereby need not to dismantle and change the check valve, promoted the convenience that the check valve used.

Drawings

FIG. 1 is a schematic structural view of a two-way check valve according to the present invention in a reverse flow state;

FIG. 2 is a schematic structural diagram of a bidirectional check valve according to the present invention in a forward flow state;

fig. 3 is an enlarged view of a structure of fig. 2.

In the figure: 1. a valve tube; 2. a sealing plate; 3. a flow port; 4. a sliding groove; 5. a sliding plate; 6. a spring; 7. a bending rod; 8. a sealing plug; 9. a threaded rod; 10. a threaded sleeve; 11. a resistance bar; 12. a first bevel gear; 13. a second bevel gear; 14. a rotating shaft; 15. a handle.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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.

Referring to fig. 1-3, a two-way check valve, includes valve pipe 1, and the bilateral symmetry fixedly connected with a pair of closing plate 2 in valve pipe 1 has seted up circulation mouth 3 on the closing plate 2, has all seted up sliding tray 4 on top and the interior bottom in the valve pipe 1 interior both sides, and equal sliding connection has sliding plate 5 between sliding tray 4 inner wall, and sliding plate 5 passes through spring 6 elastic connection on closing plate 2 lateral wall.

The sealing mechanism who is used for sealed circulation mouth 3 is installed to the one end that sliding plate 5 kept away from sliding tray 4, and sealing mechanism includes sealing plug 8 and buckling rod 7, and sealing plug 8 cooperates with

circulation mouth

3, and 7 one end fixed connection of buckling rod are on 5 tip of sliding plate, and 7 other end fixed connection of buckling rod is on the sealing plug 8 lateral wall.

The side wall rotates between 2 opposite sides of a pair of closing plate and is connected with threaded rod 9, installs on threaded rod 9 to be used for blockking 5 horizontal slip's of sliding plate resistance mechanism, and resistance mechanism includes threaded sleeve 10 and a pair of resistance bar 11, and threaded sleeve 10 threaded connection is on threaded rod 9, and the equal fixed connection of a pair of resistance bar 11 is in threaded sleeve 10 upper end, and a pair of resistance bar 11 runs through to the closing plate 2 other end that is close respectively.

The threaded rod 9 is provided with a driving mechanism for driving the threaded rod 9 to rotate, the driving mechanism comprises a first bevel gear 12 and a second bevel gear 13, the first bevel gear 12 is coaxially and fixedly connected to the end of the threaded rod 9, the second bevel gear 13 is rotatably connected to the top of the valve pipe 1 through a rotating shaft 14, the first bevel gear 12 is meshed with the second bevel gear 13, and a power mechanism for providing power for the rotation of the second bevel gear 13 is arranged on the rotating shaft 14.

The power mechanism comprises a handle 15, the rotating shaft 14 extends to the upper part of the valve tube 1, and the handle 15 is fixedly connected to the upper end of the rotating shaft 14.

The joint of the rotating shaft 14 and the valve pipe 1 is wrapped by a sealing ring.

In the utility model, in the position state of the resistance rod 11 in fig. 1 and fig. 2, when fluid flows from right to left, the fluid flow force can push the right sliding plate 5 to move leftward, so as to push the sealing plug 8 to block the right flow port 3, i.e. the fluid cannot flow leftward, and when the fluid flows from left to right, because the left resistance rod 11 pushes the left sliding plate 5, the sliding plate 5 cannot move rightward under the action of the fluid flow force, so that the smoothness of the flow port 3 is ensured, and the fluid can move rightward.

When the flowing direction of the fluid needs to be changed, only the handle 15 needs to be rotated, the handle 15 drives the rotating shaft 14 to rotate, so that the threaded rod 9 is driven to rotate under the meshing action of the first bevel gear 12 and the second bevel gear 13, the threaded rod 9 drives the threaded sleeve 10 and the two resistance rods 11 to move, the resistance rod 11 on the right side abuts against the sliding plate 5 on the right side, and therefore the function opposite to that of the check valve shown in fig. 1 and 2 can be achieved, namely the flowing direction of the fluid can be changed under the condition that the check valve does not need to be replaced.

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 two-way check valve comprises a valve pipe (1) and is characterized in that a pair of sealing plates (2) are symmetrically and fixedly connected with the two sides in the valve pipe (1), the sealing plate (2) is provided with a circulation port (3), the inner top and the inner bottom of the two sides of the valve pipe (1) are both provided with a sliding groove (4), sliding plates (5) are connected between the inner walls of the sliding grooves (4) in a sliding manner, the sliding plates (5) are elastically connected to the side wall of the sealing plate (2) through springs (6), one end of the sliding plate (5) far away from the sliding groove (4) is provided with a sealing mechanism for sealing the circulation port (3), a threaded rod (9) is rotatably connected between the opposite side walls of the pair of sealing plates (2), a resistance mechanism for blocking the sliding plate (5) from sliding horizontally is arranged on the threaded rod (9), and a driving mechanism for driving the threaded rod (9) to rotate is mounted on the threaded rod (9).

2. A two-way non-return valve according to claim 1, characterised in that the sealing means comprise a sealing plug (8) and a bent rod (7), the sealing plug (8) cooperating with the through-flow opening (3), the bent rod (7) being fixedly connected at one end to the end of the sliding plate (5) and at the other end to the side wall of the sealing plug (8).

3. The check valve according to claim 1, wherein the resistance mechanism comprises a threaded sleeve (10) and a pair of resistance rods (11), the threaded sleeve (10) is threaded on the threaded rod (9), the pair of resistance rods (11) are fixedly connected to the upper end of the threaded sleeve (10), and the pair of resistance rods (11) respectively penetrate to the other end of the adjacent sealing plate (2).

4. The two-way check valve according to claim 1, characterized in that the driving mechanism comprises a first bevel gear (12) and a second bevel gear (13), the first bevel gear (12) is coaxially and fixedly connected to the end of the threaded rod (9), the second bevel gear (13) is rotatably connected to the inner top of the valve tube (1) through a rotating shaft (14), the first bevel gear (12) is meshed with the second bevel gear (13), and a power mechanism for providing power for the rotation of the second bevel gear (13) is installed on the rotating shaft (14).

5. The two-way check valve according to claim 4, characterized in that the power mechanism comprises a handle (15), the rotating shaft (14) extends above the valve tube (1), and the handle (15) is fixedly connected to the upper end of the rotating shaft (14).

6. The two-way non-return valve according to claim 4, characterized in that the joint of the rotating shaft (14) and the valve pipe (1) is wrapped with a sealing ring.