CN111911671A

CN111911671A - Novel check valve

Info

Publication number: CN111911671A
Application number: CN201910386545.3A
Authority: CN
Inventors: 刘金玫
Original assignee: Jin Yuan Energy Saving System Tianjin Ltd By Share Ltd
Current assignee: Jin Yuan Energy Saving System Tianjin Ltd By Share Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-11-10

Abstract

The application discloses a novel check valve, which comprises a valve body; the valve body is provided with an inlet end and an outlet end; a check mechanism is arranged in the valve body; the valve body is provided with an overflowing cavity; the non-return mechanism comprises a fixed plate; the center of the surface of the fixing plate is fixedly provided with a track rod; the track rod is sleeved with a circular valve clack in a sliding manner; the end part of the track rod is provided with a limiting end cap; a non-return convex ring is arranged on the inner wall of the valve body; the inner diameter of the check convex ring is smaller than the outer diameter of the valve clack; the track rod is provided with a return spring. This application simple structure, the non return is flowed effectually, and is convenient for inside clearance.

Description

Novel check valve

Technical Field

The present disclosure relates generally to check valves and, more particularly, to a novel check valve.

Background

The check valve is a valve which automatically opens and closes a valve flap by the flow of a medium and is used for preventing the medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve. The check valve is an automatic valve and mainly used for preventing medium from flowing backwards, preventing the pump and a driving motor from reversing and discharging container medium. The valve clack of the check valve can generate attachments after being used for a long time, and the check effect is influenced. Currently, there are commercially available check valves that include a check valve body. Although the check valve body has good backflow stopping effect, the structure is complex, and the check valve body is inconvenient to clean the inside.

Disclosure of Invention

In view of the above-mentioned drawbacks or deficiencies in the prior art, it is desirable to provide a novel check valve that has a simple structure, good check flow effect, and is convenient for internal cleaning.

The application provides a novel check valve, which comprises a valve body; the valve body is provided with an inlet end and an outlet end; a non-return mechanism is fixedly arranged in the valve body close to the inlet end; an overflowing cavity is arranged between the check mechanism and the outlet end of the valve body;

the non-return mechanism comprises a fixed plate which is fixedly arranged in the valve body, is close to the inlet end and is vertical to the water flow direction; a track rod perpendicular to the fixed plate is fixedly arranged at the center of the plate surface of the fixed plate close to the outlet end; the track rod is sleeved with a circular valve clack in a sliding manner; the end part of the track rod, which is far away from the fixed plate, is provided with a limiting end cap; the limiting end cap extends into the overflowing chamber;

a non-return convex ring is arranged on one side, close to the fixed plate, of the valve clack on the inner wall of the valve body; the inner diameter of the check convex ring is smaller than the outer diameter of the valve clack; a return spring is arranged on the track rod between the valve clack and the fixing plate; the end part of the return spring close to the valve clack is fixed on the valve clack; the end part of the return spring close to the fixed plate is fixed on the fixed plate; the return spring is under tension.

According to the technical scheme provided by the embodiment of the application, a sealing rubber strip is arranged between the check convex ring and the valve clack; and a sealing rubber ring is arranged at the sleeving joint of the valve clack and the track rod.

According to the technical scheme provided by the embodiment of the application, an inlet flange sheet is arranged at the inlet end of the valve body; an outlet flange sheet is arranged at the outlet end of the valve body.

Compared with the prior art, the beneficial effects of this application are: the novel check valve is provided with the check mechanism, is simple in structure and can effectively prevent backflow; through the arrangement of the inlet flange plate and the outlet flange plate, the novel check valve is convenient to disassemble and clean.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a novel check valve provided in an embodiment of the present application;

fig. 2 is a sectional view taken along a line a-a of the check valve according to the present invention.

Reference numbers in the figures: 11. a valve body; 12. an inlet end; 13. an outlet end; 14. a non-return mechanism; 15. An overflow chamber; 16. sealing the rubber strip; 17. an inlet flange plate; 18. an outlet flange sheet;

41. a fixing plate; 42. a track rod; 43. a valve flap; 44. a limiting end cap; 45. a non-return convex ring; 46. a return spring.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 and 2, the present embodiment provides a novel check valve, which includes a valve body 11; the valve body 11 is provided with an inlet end 12 and an outlet end 13; a check mechanism 14 is fixedly arranged in the valve body 11 close to the inlet end 12; an overflowing cavity 15 is arranged between the check mechanism 14 and the outlet end 13 of the valve body 11;

the check mechanism 14 comprises a fixed plate 41 which is fixedly arranged in the valve body 11 close to the inlet end 12 and is vertical to the water flow direction; a track rod 42 vertical to the fixed plate 41 is fixedly arranged at the center of the plate surface of the fixed plate 41 close to the outlet end 13; a circular valve clack 43 is sleeved on the track rod 42 in a sliding manner; the end part of the track rod 42 far away from the fixing plate 41 is provided with a limiting end cap 44; the limiting end cap 44 extends into the overflowing chamber 15;

a non-return convex ring 45 is arranged on one side, close to the fixed plate 41, of the valve clack 43 on the inner wall of the valve body 11; the inner diameter of the check convex ring 45 is smaller than the outer diameter of the valve clack 43; a return spring 46 is arranged on the track rod 42 between the valve clack 43 and the fixing plate 41; the end of the return spring 46 close to the valve clack 43 is fixed on the valve clack 43; the end of the return spring 46 close to the fixed plate 41 is fixed on the fixed plate 41; the return spring 46 is under tension.

The working principle of the novel check valve is as follows: fluid enters from the inlet end 12, pushes the valve flap 43, the return spring 46 extends, the valve flap 43 is pushed into the flow-through chamber 15, and the fluid passes through the two sides of the valve flap 43; after overflowing, the valve clack 43 resets under the pulling force of the reset spring 46, the valve clack 43 is attached to the check convex ring 45, a check airtight structure is formed, the structure is simple, and the check flow effect is good.

In a preferred embodiment, a sealing rubber strip 45 is arranged between the check convex ring 45 and the valve clack 43, so that the sealing property between the check convex ring 45 and the valve clack 43 is ensured, and the check effect is enhanced; the valve clack 43 and the track rod 42 are sleeved with a sealing rubber ring to prevent leakage at the sleeved part.

In a preferred embodiment, an inlet flange plate 17 is provided at the inlet end 12 of the valve body 11; the outlet end 13 of the valve body 11 is provided with an outlet flange piece 18, an inlet flange piece 17 and an outlet flange piece 18, so that the valve body 11 can be detached to be cleaned under the condition that the whole pipeline system is not influenced, and the cleaning is convenient.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The novel check valve is characterized by comprising a valve body; the valve body is provided with an inlet end and an outlet end; a check mechanism is fixedly arranged in the valve body and close to the inlet end; an overflowing cavity is arranged between the check mechanism and the outlet end of the valve body;

the check mechanism comprises a fixing plate which is fixedly arranged in the valve body, is close to the inlet end and is vertical to the water flow direction; a track rod perpendicular to the fixed plate is fixedly arranged at the center of the plate surface of the fixed plate close to the outlet end; the track rod is sleeved with a circular valve clack in a sliding manner; the end part of the track rod, which is far away from the fixed plate, is provided with a limiting end cap; the limiting end cap extends into the overflowing chamber;

a non-return convex ring is arranged on one side, close to the fixed plate, of the valve clack on the inner wall of the valve body; the inner diameter of the check convex ring is smaller than the outer diameter of the valve clack; a return spring is arranged on the track rod between the valve clack and the fixing plate; the end part of the return spring close to the valve clack is fixed on the valve clack; the end part of the return spring close to the fixed plate is fixed on the fixed plate; the return spring is in a tensioned state.

2. The novel check valve as claimed in claim 1, wherein a sealing rubber strip is arranged between the check convex ring and the valve flap; and a sealing rubber ring is arranged at the sleeving part of the valve clack and the track rod.

3. The novel check valve of claim 2 wherein an inlet flange plate is provided at the inlet end of the valve body; an outlet flange sheet is arranged at the outlet end of the valve body.