CN215831202U

CN215831202U - Backflow-preventing drainage control mechanism

Info

Publication number: CN215831202U
Application number: CN202121518084.XU
Authority: CN
Inventors: 罗陆军
Original assignee: Zhejiang Coral Sanitary Ware Co ltd
Current assignee: Zhejiang Coral Sanitary Ware Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-02-15
Anticipated expiration: 2031-07-05

Abstract

The utility model provides a backflow-preventing drainage control mechanism, and belongs to the technical field of machinery. It has solved the current problem that the place that adds water structure is suitable for is few. The backflow-preventing drainage control mechanism comprises a shell with a water passing cavity inside, wherein the shell is further provided with a water inlet, a water outlet and a water outlet, a valve core and an elastic piece are arranged in the water passing cavity, a water inlet communicated with the water inlet and the water passing cavity, a water outlet communicated with the water outlet and the water passing cavity and a drain hole communicated with the water outlet and the water passing cavity are further arranged in the shell, the valve core can be close to the water inlet and block the water inlet under the elastic action of the elastic piece, and the valve core can overcome the elastic action of the elastic piece to move under the hydraulic action of the water inlet to open the water inlet and block the drain hole. The backflow-preventing drainage control mechanism has the advantage of wide application range.

Description

Backflow-preventing drainage control mechanism

Technical Field

The utility model belongs to the technical field of machinery, and relates to a backflow-preventing drainage control mechanism.

Background

The pipeline is the most commonly used conveying device for conveying the fluid medium, and during the conveying process of the fluid medium, if the conveying is stopped, a large amount of the fluid medium remains in the pipeline, and the fluid medium remaining in the pipeline can flow back and the like. If the water is accumulated in the pipeline for a long time, bacteria are easy to breed, and the residual accumulated water in the medium, especially the pipeline for conveying the drinking water, can affect the body health of the user if the water is drunk again.

Therefore, people design a water adding structure for preventing backflow and water accumulation, and apply for Chinese patent with the application numbers as follows: 201201600470. X; the authorized bulletin number is: CN 205371699U; this structure of adding water includes with the water pump, inlet tube and outlet pipe are connected with the water inlet and the delivery port that add the water pump respectively, the structure of adding water still includes drainage component and intercommunication control, drainage component sets up in inlet port department and switches on water inlet and inlet tube, be equipped with the intercommunication mouth on the drainage component, the intercommunication control sets up on the intercommunication mouth and can open or close the intercommunication mouth, when the intercommunication mouth is opened to the intercommunication control, the inside and the outside of inlet tube switch on, when the intercommunication mouth is closed to the intercommunication control, the inside and the outside of inlet tube are isolated. The water adding structure sends the residual water in the pipeline to the water source and the water receiving container respectively by the air at the position of the water discharging piece being sent into the pipeline and matched with the water adding pump.

However, the water adding structure needs to be matched with structures such as a water adding pump and an electromagnetic valve for use, and is complex in structure, large in size, large in occupied space and few in applicable places.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a backflow-preventing drainage control mechanism aiming at the problems in the prior art, and solves the problem that the existing water adding structure is applicable to few places.

The purpose of the utility model can be realized by the following technical scheme:

the backflow-preventing drainage control mechanism comprises a shell with a water passing cavity inside, a water inlet, a water outlet and a water outlet are further arranged on the shell, and a valve core and an elastic piece are arranged in the water passing cavity.

When the backflow-preventing drainage control mechanism is installed, the water inlet and the water outlet are correspondingly connected into a pipeline, the water outlet can not be connected, and the backflow-preventing drainage control mechanism can also be connected into a corresponding water receiving container according to requirements. When the valve core is used, the valve core is used for acquiescently plugging the water inlet hole under the elastic action of the elastic piece, the drain hole is opened, when water enters the water inlet, along with the rise of water pressure, the water at the water inlet hole exerts acting force on the valve core, so that the valve core overcomes the elastic action of the elastic piece to move, the water inlet hole is opened and the drain hole is plugged, and then water flows out through the water passing cavity, the water outlet hole and the water outlet hole. After water is fed, the water pressure disappears, the valve core resets under the elastic action of the elastic piece, the water inlet hole is blocked, the water discharging hole is opened, water in the water passing cavity and the pipeline cannot flow back through the water inlet hole and can flow out through the opened water discharging hole and the water discharging hole, the backflow preventing function can be achieved, and water accumulated in the pipeline can be discharged.

In this prevent water drainage control mechanism's the use of refluence, can not cooperate structures such as water pump, solenoid valve to use, only need with the casing correspond connect in the pipeline can, occupy small, application scope is wide.

In the backflow-preventing drainage control mechanism, the shell is further internally connected with an annular guide ring, the valve core is arranged in the guide ring in a penetrating mode, two ends of the valve core can extend out of two ends of the guide ring, and the inner side of the guide ring is a guide surface capable of guiding the movement of the valve core. The guide ring is connected in the shell, the moving direction of the valve core is limited by the guide ring, and the guide is provided for the stable movement of the valve core, so that the valve core can stably plug the water inlet hole or the water drain hole no matter how the shell is installed, and the valve core is suitable for various installation environments.

In the backflow-preventing drainage control mechanism, the guide ring is provided with a plurality of water through holes in an axial direction. The water passing area in the water passing cavity can be increased by arranging the water passing holes, the water passing speed is increased, and the water using requirements of users are met.

As another case, in the backflow prevention and drainage control mechanism, the valve element has a protruding guide portion on an outer side thereof, and an outer side surface of the guide portion can abut against a side wall of the water passing chamber. The moving direction of the valve core is limited by the mode that the guide part fixed with the valve core is abutted against the inner wall of the water passing cavity, so that the moving stability of the valve core is ensured.

In the above anti-backflow drainage control mechanism, the water inlet hole and the water discharge hole are oppositely arranged on two sides of the valve core, the side walls of the water passing cavity surrounding the water inlet hole and the water discharge hole are respectively provided with a conical surface, and the end parts of the valve core facing the water inlet hole and the water discharge hole are respectively provided with a sealing part which can be attached to the conical surfaces and form sealing. The valve core can better abut and seal after moving through the guiding of the conical surface.

In the backflow prevention drainage control mechanism, the number of the water outlet holes is several, and the water outlet holes are arranged around the water outlet hole. The water passing area can be increased by the plurality of water outlet holes, and the water passing speed is increased.

In the backflow-preventing drainage control mechanism, the valve core comprises a first rod and a second rod which are coaxially arranged and are rod-shaped, one end of the second rod is sleeved outside one end of the first rod and is in threaded connection with the first rod and the second rod, and the other ends of the first rod and the second rod are opposite to the water inlet hole and the water drain hole respectively. The two parts of the valve core are in threaded connection, and the axial length of the valve core can be adjusted according to different water pressures of actual installation environments, so that on-off control of the water inlet hole and the water drain hole can be realized better and more stably.

In the above anti-backflow drainage control mechanism, the outer side of the guide ring is in threaded connection with the inner side wall of the shell. The threaded connection mode can ensure the connection stability, is favorable for replacement and maintenance, and adjusts the axial position of the guide ring.

Compared with the prior art, in the use of this prevent water drainage control mechanism that flows backwards, can not cooperate structures such as water pump, solenoid valve, only need with the casing correspond connect in the pipeline can, occupy small, application scope is wide.

Drawings

Fig. 1 is a schematic sectional structure view of the backflow prevention drainage control mechanism.

In the figure, 1, a housing; 11. a water passing cavity; 12. a water inlet; 13. a water outlet; 14. a water outlet; 15. a water inlet hole; 16. a water outlet hole; 17. a drain hole; 18. a conical surface; 2. a valve core; 21. a sealing part; 22. a first rod; 23. a second rod; 3. an elastic member; 4. a guide ring; 41. a guide surface; 42. and a water through hole.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, the backflow-preventing drainage control mechanism comprises a housing 1 with a water passing cavity 11 inside, a water inlet 12 and a water outlet 13 are respectively arranged at two ends of the housing 1, a water outlet 14 is arranged at the side part of the housing 1, and a valve core 2 and a spring property are arranged in the water passing cavity 11. The shell 1 is also provided with a water inlet hole 15 for communicating the water inlet 12 with the water passing cavity 11, a water outlet hole 16 for communicating the water outlet 13 with the water passing cavity 11, and a water outlet hole 17 for communicating the water outlet 14 with the water passing cavity 11, wherein the water inlet hole 15 is arranged on the side wall of the water passing cavity 11 close to the water inlet 12, and the water outlet hole 16 and the water outlet hole 17 are arranged on the side wall of the water passing cavity 11 close to the water outlet 13. In this embodiment, the water inlet holes 15 and the water outlet holes 17 are disposed on two sides of the valve core 2 in a facing manner, and the number of the water outlet holes 16 is several and is opened around the water outlet holes 17.

The internal thread of the shell 1 is connected with a guide ring 4 in a circular ring shape, the valve core 2 is arranged in the guide ring 4 in a penetrating mode, two ends of the valve core 2 extend out from two ends of the guide ring 4, the inner side of the guide ring 4 is a guide surface 41 capable of providing guide for the movement of the valve core 2, the deviation center of the guide ring 4 is axially penetrated, a plurality of water passing holes 42 are formed, and the plurality of water passing holes 42 are uniformly distributed on the axis of the guide ring 4.

The valve core 2 comprises a first rod 22 and a second rod 23 which are coaxially arranged and are rod-shaped, one end of the second rod 23 is sleeved outside one end of the first rod 22 and is in threaded connection with the first rod 22 and the second rod 23, and the other ends of the first rod 22 and the second rod 23 are respectively opposite to the water inlet hole 15 and the water drain hole 17.

The side walls of the water passing cavity 11 surrounding the water inlet hole 15 and the water discharging hole 17 are provided with conical surfaces 18, the two conical surfaces 18 incline towards the direction of the water inlet hole 15 or the water discharging hole 17, and the end parts of the valve core 2 facing the water inlet hole 15 and the water discharging hole 17 are provided with sealing parts 21 which can be abutted against the conical surfaces 18 and form sealing. In this embodiment, the sealing portion 21 includes a circular sealing groove formed at the outer sides of the two ends of the valve rod and a sealing ring disposed in the sealing groove, the outer sides of the two sealing rings both protrude from the outer side surface of the valve core 2, and one side of the sealing ring facing the corresponding conical surface 18 has a conical sealing surface, and the sealing surface can be attached to the conical surface 18 to form a seal; the elastic part 3 is a spring sleeved on the outer side of the valve core 2, and two ends of the spring respectively abut against the guide ring 4 and the valve core 2.

For convenient installation, the shell 1 comprises a first shell and a second shell, wherein one ends of the first shell and the second shell, which are opposite, are provided with concave cavities, and after the first shell and the second shell are oppositely screwed, the two cavities form the water passing cavity 11.

To facilitate the drainage connection, a tubular drainage nozzle is also screwed into the drainage opening 14 of the housing 1, the outer end of the drainage nozzle extending outside the housing 1.

When the backflow-preventing drainage control mechanism is installed, the water inlet 12 and the water outlet 13 are correspondingly connected into a pipeline, and the water outlet 14 can not be connected or can be connected into a corresponding water receiving container according to requirements.

When the water inlet valve is used, the valve core 2 is used for acquiescently plugging the water inlet hole 15 under the elastic force action of the elastic piece 3, the drain hole 17 is opened, when water enters the water inlet 12, along with the rise of water pressure, the water at the position of the water inlet hole 15 exerts an acting force on the valve core 2, so that the valve core 2 overcomes the elastic force action of the elastic piece 3 under the guiding of the guide ring 4 to move towards the direction of the drain hole 17 and keep away from the water inlet hole 15, the water inlet hole 15 is opened and the drain hole 17 is plugged, and then water flows out through the water passing cavity 11, the water outlet hole 16 and the water outlet 13.

After water inflow is finished, water pressure disappears, the valve core 2 resets under the elastic action of the elastic piece 3, the water inlet hole 15 is plugged again, the drain hole 17 is opened, water in the water passing cavity 11 and the pipeline cannot flow back through the water inlet hole 15 and can flow out through the opened drain hole 17 and the water outlet 14, the backflow preventing function can be achieved, and water accumulated in the pipeline can be drained.

Example two

The technical solution of the present embodiment is substantially the same as that of the first embodiment, except that: the outer side of the valve core 2 is not provided with the guide ring 4, but the outer side of the valve core 2 is provided with a convex guide part, the guide part is fixed with the valve core 2, and the outer side surface of the guide part can be abutted against the side wall of the water passing cavity 11. That is, the moving direction of the valve core 2 is limited by the way that the guide part fixed with the valve core 2 is abutted against the inner wall of the water passing cavity 11, so that the moving stability of the valve core 2 is ensured.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The backflow-preventing drainage control mechanism comprises a shell (1) with a water passing cavity (11) inside, the shell (1) is also provided with a water inlet (12), a water outlet (13) and a water outlet (14), a valve core (2) and an elastic piece (3) are arranged in the water passing cavity (11), it is characterized in that the shell (1) is also internally provided with a water inlet hole (15) for communicating the water inlet (12) with the water passing cavity (11), a water outlet hole (16) for communicating the water outlet (13) with the water passing cavity (11) and a water discharging hole (17) for communicating the water discharging hole (14) with the water passing cavity (11), the valve core (2) can be close to the water inlet hole (15) under the elastic force action of the elastic piece (3) and block the water inlet hole (15), the valve core (2) can overcome the elastic force of the elastic piece (3) to move under the action of water pressure at the water inlet (15) so as to open the water inlet (15) and block the water outlet (17).

2. The backflow prevention drainage control mechanism according to claim 1, wherein an annular guide ring (4) is further connected in the housing (1), the valve core (2) is arranged in the guide ring (4) in a penetrating manner, two ends of the valve core (2) can extend out from two ends of the guide ring (4), and a guide surface (41) capable of guiding the movement of the valve core (2) is arranged on the inner side of the guide ring (4).

3. The mechanism of claim 2, wherein the guide ring (4) further has a plurality of water holes (42) formed therethrough along the axial direction.

4. The backflow-preventing water drainage control mechanism is characterized in that a convex guide part is arranged on the outer side of the valve core (2), and the outer side surface of the guide part can abut against the side wall of the water passing cavity (11).

5. The backflow-preventing and water-draining control mechanism is characterized in that the water inlet hole (15) and the water draining hole (17) are oppositely arranged on two sides of the valve core (2), the side wall of the water passing cavity (11) surrounding the water inlet hole (15) and the water draining hole (17) is provided with a conical surface (18), and the end part of the valve core (2) facing the water inlet hole (15) and the water draining hole (17) is provided with a sealing part (21) which can be abutted against the conical surface (18) and form a seal.

6. The mechanism of claim 5, wherein the number of the water outlet holes (16) is several, and the several water outlet holes (16) are disposed around the water outlet hole (17).

7. The backflow-preventing and water-draining control mechanism is characterized in that the valve core (2) comprises a first rod (22) and a second rod (23) which are coaxially arranged and are rod-shaped, one end of the second rod (23) is sleeved outside one end of the first rod (22) and is in threaded connection with the first rod (22) and the second rod (23), and the other ends of the first rod (22) and the second rod (23) are respectively opposite to the water inlet hole (15) and the water draining hole (17).

8. The backflow prevention drainage control mechanism as claimed in claim 2 or 3, wherein the outer side of the guide ring (4) is in threaded connection with the inner side wall of the housing (1).