CN218625551U

CN218625551U - Anti-reflux valve

Info

Publication number: CN218625551U
Application number: CN202222555235.XU
Authority: CN
Inventors: 蔡祖发; 史春淼; 陈鹏华; 班代勇; 华焕焕
Original assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Current assignee: Jinhua Hongchang Electrlcal Equipment Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-03-14
Anticipated expiration: 2032-09-22

Abstract

The anti-reflux valve comprises a pipeline, wherein a water inlet mechanism is installed at the front end of the pipeline, and an anti-reflux mechanism for preventing liquid in the pipeline from flowing reversely is installed at the rear end of the pipeline. The utility model discloses a flashing valve against current adopts compact structure's structure against current, compact structure, and simple to operate has improved space utilization greatly, and the processing step is few, and the reliability is high, and the yields is high.

Description

Anti-reflux valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a prevent valve against reverse flow.

Background

At present, need use this spare part of flashing valve in the toilet bowl, current toilet bowl flashing valve has adopted the structure against current mostly, but the shortcoming of the structure against current of preventing among the present toilet bowl lies in space and bulky, influences the inside overall arrangement of toilet bowl to the processing cost is high, and process steps are more, and the yields is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide a prevent valve against reverse flow to solve the problem that proposes in the background art.

The utility model provides a technical scheme that its technical problem adopted: the anti-reflux valve comprises a pipeline, wherein a water inlet mechanism is installed at the front end of the pipeline, and an anti-reflux mechanism for preventing liquid in the pipeline from flowing reversely is installed at the rear end of the pipeline.

In order to further improve the structure, the water inlet mechanism comprises a water inlet tank fixedly arranged at the front end of the pipeline in an integrated forming mode, a shunt cylinder communicated with the pipeline is fixedly arranged at the top of the inner wall of the water inlet tank, a water inlet guide pipe communicated with the water inlet tank is fixedly arranged at the front end of the water inlet tank, a pressing plate capable of plugging the bottom of the shunt cylinder for sealing is arranged inside the water inlet tank, lower sealing rubber rings are fixedly arranged on two sides of the pressing plate, the outer sides of the lower sealing rubber rings are fixedly connected with the inner wall of the water inlet tank in a sealing mode, lower pressure inlet holes are formed in the pressing plate, and lower springs are fixedly arranged on the pressing plate and the inner wall of the bottom of the water inlet tank; the water inlet tank is provided with a sealing cavity communicated with the outside, the water inlet tank is provided with a first guide channel communicated with the sealing cavity and the inner wall of the bottom of the water inlet tank, the water inlet tank is provided with a counter bore cavity communicated with the sealing cavity, the inner wall of the counter bore cavity is provided with a second guide channel communicated with the inside of the pipeline, and the inner wall of the sealing cavity is connected with a plug capable of plugging the counter bore cavity to prevent the counter bore cavity from being communicated with the sealing cavity in a sliding and sealing mode. This structure can play the effect of valve, and when only when the heavy vestibule was stopped up to the end cap, rivers could press the clamp plate and carry out the operation of intaking.

Further perfect, prevent mechanism against the current is including preventing the adverse current chamber, pipe inner wall sliding connection has the frame, fixed mounting has the anti-adverse current board that can plug up the pipeline other end on the frame, be equipped with the external negative pressure balancing hole of intercommunication on preventing the adverse current chamber, prevent against the current intracavity wall and be equipped with the backup pad, array fixed mounting has the guide bar that corresponds with the negative pressure balancing hole in the backup pad, it has the stifled ball that can plug up the negative pressure balancing hole to slide between the guide bar. The structure can supplement air in time when negative pressure is generated in the pipeline, so that the negative pressure is prevented from being generated.

The utility model discloses profitable effect is: the utility model discloses a flashing valve against current adopts compact structure's structure against current, compact structure, and simple to operate has improved space utilization greatly, and the processing step is few, and the reliability is high, and the yields is high.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional axial view of the present invention;

fig. 3 is a partial enlarged view a of fig. 2.

Description of the reference numerals: the device comprises a pipeline 1, a water inlet mechanism 2, a backflow prevention mechanism 3 flow distribution cylinder 201, a sealing rubber ring 202, a water inlet tank 203, a lower spring 204, a first guide channel 205, a counter bore cavity 206, a sealing cavity 207, a plug 208, a second guide channel 209, a pressure plate 210, a lower pressure inlet hole 211, a water inlet conduit 212, a backflow prevention cavity 301, a backflow prevention plate 302, a frame 303, a support plate 304, a guide rod 305, a blocking ball 306 and a negative pressure balance hole 307.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to the attached FIG. 1~3: the valve for preventing reverse flow in the embodiment comprises a pipeline 1, wherein a water inlet mechanism 2 is installed at the front end of the pipeline 1, and a reverse flow preventing mechanism 3 for preventing liquid in the pipeline 1 from flowing reversely is installed at the rear end of the pipeline 1. The water inlet mechanism 2 comprises a water inlet tank 203 fixedly arranged at the front end of the pipeline 1 in an integrated forming mode, a shunt cylinder 201 communicated with the pipeline 1 is fixedly arranged at the top of the inner wall of the water inlet tank 203, a water inlet guide pipe 212 communicated with the water inlet tank 203 is fixedly arranged at the front end of the water inlet tank 203, a pressing plate 210 capable of blocking the bottom of the shunt cylinder 201 for sealing is arranged inside the water inlet tank 203, lower sealing rubber rings 202 are fixedly arranged at two sides of the pressing plate 210, the outer side of each lower sealing rubber ring 202 is fixedly connected with the inner wall of the water inlet tank 203 in a sealing mode, a lower pressure inlet hole 211 is formed in the pressing plate 210, and a lower spring 204 is fixedly arranged on the inner walls of the bottoms of the pressing plate 210 and the water inlet tank 203; the water inlet tank 203 is provided with a sealing cavity 207 communicated with the outside, the water inlet tank 203 is provided with a first guiding and conducting channel 205 communicated with the sealing cavity 207 and the inner wall of the bottom of the water inlet tank 203, the water inlet tank 203 is provided with a counter bore cavity 206 communicated with the sealing cavity 207, the inner wall of the counter bore cavity 206 is provided with a second guiding channel 209 communicated with the inside of the pipeline 1, and the inner wall of the sealing cavity 207 is connected with a plug 208 in a sliding and sealing manner, wherein the plug 208 can plug the counter bore cavity 206 to enable the counter bore cavity 206 not to be communicated with the sealing cavity 207. Prevent mechanism 3 against current including preventing backflow chamber 301, 1 inner wall sliding connection of pipeline has frame 303, fixed mounting has the anti-backflow board 302 that can plug up the pipeline 1 other end on the frame 303, prevent being equipped with the external negative pressure balancing hole 307 of intercommunication on the backflow chamber 301, prevent that backflow chamber 301 inner wall is equipped with backup pad 304, array fixed mounting has the guide bar 305 that corresponds with negative pressure balancing hole 307 on the backup pad 304, it has the stifled ball 306 that can plug up negative pressure balancing hole 307 to slide between the guide bar 305.

When the anti-backflow device is used, the plug 208 is opened, water flow is introduced from the water inlet guide pipe 212, the pressing plate 210 is pushed open under the pressure of the water flow, the water flow enters the pipeline 1 through the flow dividing cylinder 201, then the anti-backflow plate 302 is pushed by the water flow to be conveyed, and when the water flow stops being conveyed, the anti-backflow plate 302 blocks the rear end of the pipeline 1 under the action of water pressure to prevent backflow.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims

1. An anti-reflux valve comprises a pipeline (1) and is characterized in that: the water inlet mechanism (2) is installed at the front end of the pipeline (1), and the backflow preventing mechanism (3) for preventing liquid in the pipeline (1) from flowing reversely is installed at the rear end of the pipeline (1).

2. The valve for preventing reverse-flow according to claim 1, wherein: the water inlet mechanism (2) comprises a water inlet tank (203) fixedly mounted at the front end of the pipeline (1) in an integrated forming mode, a shunt cylinder (201) communicated with the pipeline (1) is fixedly mounted at the top of the inner wall of the water inlet tank (203), a water inlet guide pipe (212) communicated with the water inlet tank (203) is fixedly mounted at the front end of the water inlet tank (203), a pressing plate (210) capable of blocking the bottom of the shunt cylinder (201) for sealing is arranged inside the water inlet tank (203), lower sealing rubber rings (202) are fixedly mounted on two sides of the pressing plate (210), the outer side of each lower sealing rubber ring (202) is fixedly connected with the inner wall of the water inlet tank (203) in a sealing mode, a lower pressure inlet hole (211) is formed in the pressing plate (210), and a lower spring (204) is fixedly mounted on the inner walls of the bottoms of the pressing plate (210) and the water inlet tank (203); the water inlet tank is characterized in that a sealing cavity (207) communicated with the outside is arranged on the water inlet tank (203), a first guiding and conducting channel (205) communicated with the sealing cavity (207) and the inner wall of the bottom of the water inlet tank (203) is arranged on the water inlet tank (203), a counter bore cavity (206) communicated with the sealing cavity (207) is arranged on the water inlet tank (203), a second guiding channel (209) communicated with the inside of the pipeline (1) is arranged on the inner wall of the counter bore cavity (206), and a plug (208) capable of plugging the counter bore cavity (206) to enable the counter bore cavity (206) not to be communicated with the sealing cavity (207) is connected to the inner wall of the sealing cavity (207) in a sliding sealing mode.

3. The valve for preventing reverse-flow according to claim 1, wherein: prevent mechanism (3) against current including preventing counter-current chamber (301), pipeline (1) inner wall sliding connection has frame (303), fixed mounting has anti-counter-current board (302) that can plug up the pipeline (1) other end on frame (303), be equipped with the external negative pressure balancing hole of intercommunication (307) on preventing counter-current chamber (301), it is equipped with backup pad (304) to prevent counter-current chamber (301) inner wall, array fixed mounting has guide rod (305) that correspond with negative pressure balancing hole (307) on backup pad (304), it has stifled ball (306) that can plug up negative pressure balancing hole (307) to slide between guide rod (305).