CN215445196U

CN215445196U - Lifting check valve

Info

Publication number: CN215445196U
Application number: CN202120508142.4U
Authority: CN
Inventors: 张思俊
Original assignee: Anhui Yuneng Industrial Technology Co ltd
Current assignee: Anhui Yuneng Industrial Technology Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2022-01-07
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a lifting check valve, which comprises a valve body and a valve cover, wherein a liquid inlet channel and a liquid outlet channel are arranged in the valve body, the liquid inlet channel and the liquid outlet channel are connected through a vertical connecting channel, a check valve port is arranged at the connecting channel, a valve clack is arranged at the position of the check valve port, a buffer spring is arranged between the upper surface of the valve clack and the lower surface of the valve cover, and a vertical through hole and a transverse flow guide hole penetrating through the through hole are formed in the valve clack. When the check valve works, the valve clack is reset under the action of the buffer spring, so that the valve clack moves up and down, and the valve clack can be flexibly opened and closed under the action of liquid in the valve body; the valve clack is provided with a vertical through hole and a transverse flow guide hole penetrating through the through hole, so that the contact area of the valve clack and liquid is increased, the pressure of the liquid on the valve clack is increased, and the sealing property between the valve clack and the valve body is improved.

Description

Lifting check valve

Technical Field

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

Background

In the production fields of petroleum, chemical industry and the like, fluid media are often required to be transmitted, and a backflow prevention device is required to be arranged on a pipeline in order to prevent the safety problem caused by backflow in the fluid transmission process. The structure of the existing anti-reflux device, namely a check valve, mainly comprises a liquid inlet channel, a liquid outlet channel, a valve cover and a check valve plate, wherein the check valve plate is connected with a guide rail, the guide rail is matched with a guide and moving channel on the valve cover to realize lifting motion so as to achieve the effect of opening and closing a valve port, when the valve plate is required to close the valve port, the valve plate and the guide rail simultaneously fall down to close the valve port so as to achieve the check effect, the adjusting process is inflexible, and the check effect is poor; in the structure, a valve port between the valve plate and the liquid inlet channel and the liquid outlet channel is lack of a good opening and closing matching device, so that the valve plate still has the problem of backflow caused by the fact that the valve plate is impacted by liquid in the liquid outlet channel in the liquid transmission process; in addition, due to frequent lifting of the valve sheet in the fluid transmission process, impact on the valve body in different degrees is generated, and the valve body is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lifting check valve which prevents a valve block from lifting under the action of liquid impact and improves the check effect.

The utility model is realized by adopting the following technical scheme:

a lifting check valve comprises a valve body and a valve cover, wherein a liquid inlet channel and a liquid outlet channel are arranged in the valve body, the liquid inlet channel and the liquid outlet channel are connected through a vertical connecting channel, a check valve port is arranged at the connecting channel, a valve clack is arranged at the position of the check valve port, a buffer spring is arranged between the upper surface of the valve clack and the lower surface of the valve cover, and a vertical through hole and a transverse flow guide hole penetrating through the through hole are formed in the valve clack.

Furthermore, a step-shaped valve block is arranged at the bottom end of the valve clack, a notch matched with the bottom end of the step-shaped valve block is formed in the check valve port, and a spring located at the bottom end of the valve clack is arranged at the check valve port.

Furthermore, a movable channel for the valve clack to move up and down is arranged between the upper surface of the valve clack and the lower surface of the valve cover, and the buffer spring is arranged in the movable channel.

Further, a gasket is arranged between the valve body and the valve cover.

Further, the valve body and the valve cover are fixedly connected through bolts.

Furthermore, connecting plates are arranged on two sides of the valve body, and mounting holes are formed in the connecting plates.

Compared with the prior art, the utility model has the following advantages:

1. according to the utility model, under the impact action of liquid in the liquid inlet channel, the valve clack moves upwards to communicate the liquid inlet channel with the liquid outlet channel, and when the check valve operates, the valve clack resets under the action of the buffer spring to realize the up-and-down movement of the valve clack, and the valve clack can flexibly realize opening and closing under the action of the liquid in the valve body; the valve clack is provided with a vertical through hole and a transverse flow guide hole penetrating through the through hole, so that the contact area of the valve clack and liquid is increased, the pressure of the liquid on the valve clack is increased, and the sealing property between the valve clack and the valve body is improved.

2. The bottom end of the valve clack is provided with the step-shaped valve block, and the notch matched with the lower end face of the step-shaped valve block is formed in the opening of the check valve, so that the matching degree of the step-shaped valve block and the check valve block is improved, the step-shaped valve block is prevented from being lifted due to the impact of liquid in the liquid outlet channel, and the check effect is improved;

3. through set up the spring in the valve clack bottom, reduce the impact strength of valve clack and valve body inner wall, avoid causing the damage to the valve body, better promotion life.

Drawings

FIG. 1 is a schematic view of a lift check valve according to an embodiment of the present invention;

FIG. 2 is a schematic view of a lift check valve according to another embodiment of the present invention;

FIG. 3 is a schematic view of the valve body of the poppet check valve of FIG. 1;

FIG. 4 is a partial schematic view of the poppet check valve of FIG. 1.

In the figure: the valve comprises a valve body 1, a valve clack 2, a buffer spring 3, a gasket 4, a valve cover 5, a bolt 6, a liquid inlet channel 7, a liquid outlet channel 8, a connecting channel 9, a movable channel 10, a connecting plate 11, a mounting hole 12, a through hole 201, a transverse diversion hole 202, a step-shaped valve block 203, a notch 204 and a spring 205.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the patent.

As shown in fig. 1 to 4, a lifting check valve comprises a valve body 1 and a valve cover 5, wherein a liquid inlet channel 7 and a liquid outlet channel 8 are arranged in the valve body 1, the liquid inlet channel 7 and the liquid outlet channel 8 are connected through a vertical connecting channel 9, a check valve port is arranged at the connecting channel 9, a valve flap 2 is arranged at the check valve port, a buffer spring 3 is arranged between the upper surface of the valve flap 2 and the lower surface of the valve cover 5, and the valve flap 2 is provided with a vertical through hole 201 and a transverse diversion hole 202 penetrating through the through hole 201.

According to the utility model, under the impact action of liquid in the liquid inlet channel, the valve clack moves upwards to communicate the liquid inlet channel with the liquid outlet channel, and when the check valve operates, the valve clack resets under the action of the buffer spring to realize the up-and-down movement of the valve clack, and the valve clack can be opened and closed flexibly under the action of the acting force of the liquid in the valve body.

The valve clack 2 is provided with the vertical through hole 201 and the transverse diversion hole 202 communicated with the through hole 201, so that the contact area of the valve clack and liquid is increased, the pressure of the liquid on the valve clack is increased, and the sealing property between the valve clack and the valve body is improved.

As shown in fig. 3 and 4, in an embodiment of the present invention, a stepped valve block 203 is disposed at a bottom end of the valve flap 2, a notch 204 is formed on the check valve port and is matched with the bottom end of the stepped valve block 203, and a spring 205 is disposed at the check valve port and is located at the bottom end of the valve flap 2.

In the utility model, the stepped valve block 203 is arranged at the bottom end of the valve clack 2, and the notch 204 matched with the lower end face of the stepped valve block 203 is arranged at the opening of the check valve, so that the matching degree of the stepped valve block 203 and the check valve is improved, the stepped valve block 203 is prevented from being lifted due to the impact of liquid in the liquid outlet channel 8, and the check effect is improved.

Through set up spring 205 in valve clack 2 bottom, reduce the impact strength of valve clack 2 and valve body 1 inner wall, avoid causing the damage to the valve body, better promotion life.

As shown in fig. 1, in an embodiment of the present invention, a movable passage 10 for moving the valve flap 2 up and down is disposed between an upper surface of the valve flap 2 and a lower surface of the valve cover 5, and the buffer spring 3 is disposed in the movable passage 10.

As shown in fig. 1, in an embodiment of the present invention, a gasket 4 is disposed between the valve body 1 and the valve cover 5.

As shown in fig. 1, in an embodiment of the present invention, the valve body 1 and the valve cover 5 are fixed to each other by bolts 6.

In another embodiment of the present invention, as shown in fig. 2, connecting plates 11 are disposed on two sides of the valve body 1, and mounting holes 12 are disposed on the connecting plates 11.

Through the connecting plate 11 who sets up, can promote the sealed effect at connection position better, facilitate the use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an over-and-under type check valve, includes valve body (1) and valve gap (5), set up inlet channel (7) and liquid outlet channel (8) in valve body (1), its characterized in that: the liquid inlet channel (7) is connected with the liquid outlet channel (8) through a vertical connecting channel (9), a check valve port is arranged at the connecting channel (9), a valve flap (2) is arranged at the check valve port, a buffer spring (3) is arranged between the upper surface of the valve flap (2) and the lower surface of the valve cover (5), and the valve flap (2) is provided with a vertical through hole (201) and a transverse flow guide hole (202) penetrating through the through hole (201).

2. The poppet check valve as defined in claim 1, wherein: the bottom end of the valve clack (2) is provided with a step-shaped valve block (203), the check valve port is provided with a notch (204) matched with the bottom end of the step-shaped valve block (203), and the check valve port is provided with a spring (205) positioned at the bottom end of the valve clack (2).

3. The poppet check valve as defined in claim 1, wherein: a movable passage (10) for the valve clack (2) to move up and down is arranged between the upper surface of the valve clack (2) and the lower surface of the valve cover (5), and the buffer spring (3) is arranged in the movable passage (10).

4. The poppet check valve as defined in claim 1, wherein: a gasket (4) is arranged between the valve body (1) and the valve cover (5).

5. The poppet check valve as defined in claim 1, wherein: the valve body (1) and the valve cover (5) are fixedly connected through a bolt (6).

6. The poppet check valve as defined in claim 1, wherein: the valve is characterized in that connecting plates (11) are arranged on two sides of the valve body (1), and mounting holes (12) are formed in the connecting plates (11).