CN205578799U - Encrypt multi -functional environmental protection check valve - Google Patents

Abstract

The utility model discloses an encrypted multifunctional environmental protection check valve, which comprises a main valve body and an auxiliary valve body. The auxiliary valve body is arranged at the outlet end of the main valve body. One side of the valve disc leans against the auxiliary valve body through a spring, and the other side of the valve disc forms a seal with the outlet end of the main valve body. An O-ring is arranged on the end face of the valve disc and the main valve body to form a seal, and the spring is always in a certain position. In the compressed state, when there is no water flow, the disc is always pressed against the main valve body by the elastic force of the spring itself, and the valve disc and the main valve body are sealed by an O-ring, and the O-ring and the main valve body are sealed by an O-ring. Wire seal, sensitive and reliable, can keep the sealed closed state under a certain range of medium pressure fluctuations; when the user actively uses water, the pressure difference between the front and back of the valve becomes larger, thereby overcoming the elastic force of the spring, pushing the valve disc to move to the auxiliary valve body, and then realizing When the user does not use water, rely on the elastic force of the spring itself to press the disc tightly against the main valve body again.

Description

An encrypted multifunctional environmental protection check valve

technical field

The utility model relates to the field of check valves, in particular to the manufacture of an encrypted multifunctional environmental protection check valve.

Background technique

In today's society, tap water flows into almost every household through pipes and valves. With the improvement of people's requirements for water quality, the requirements for the quality of tap water pipes and valves have also increased accordingly, but the existing tap water pipes and valves are exposed. There are also more and more problems, among which disputes in the management of tap water are difficult to deal with. Among them, several problems are particularly troublesome for managers: users close the valve in front of the meter and tamper with the water meter to achieve the purpose of paying less or even no water fee ; The user refuses to pay the water fee due to the insufficient water supply pressure and the fluctuation of the pressure of the pipe network, which causes the rotation of the water meter without water. If the front valve is an ordinary valve, anyone can open and close it at any time, and the manager loses control over the pipeline system.

The utility model patent with the patent application number of 200820063446.9 provides an encrypted gate valve. It is necessary to use a special internal hexagonal password magnetic tool to make the valve transmission mechanism bite and open and close the valve, so that only managers with special tools can control the pipeline system. , but the valve must be equipped with an anti-interference check valve to avoid some adverse consequences caused by fluid pressure fluctuations in the pipeline, which will bring inconvenience to construction and management.

Existing check valves have high resistance to water flow, resulting in loss of water flow power. The same transportation distance often requires more power to support, which consumes a lot of energy. In addition, existing check valves are usually made of metal materials such as copper and iron. Made of copper, lead, mercury and other heavy metals that are harmful to the human body often remain in copper, while iron is easy to rust and often causes secondary pollution to tap water.

Utility model content

The utility model provides an encrypted multifunctional environmental protection check valve to solve the problems of poor anti-interference, large energy consumption and easy secondary pollution in the check valve in the prior art.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is summarized as follows:

An encrypted multifunctional environmental protection check valve, comprising a main valve body and an auxiliary valve body. The spring leans against the auxiliary valve body, and the other side of the valve disc forms a seal with the outlet end of the main valve body. An O-ring is arranged on the end surface of the valve disc and the main valve body to form a seal. The spring is always in a certain state of compression. When there is no water flow, the disc is always pressed against the main valve body by the elastic force of the spring itself, and the valve disc and the main valve body are sealed by an O-ring, and the line seal is used between the O-ring and the main valve body, which is sensitive and reliable , can maintain a sealed and closed state under a certain range of medium pressure fluctuations; when the user actively uses water, the pressure difference between the front and rear of the valve becomes larger, thereby overcoming the elastic force of the spring, pushing the valve disc to move to the auxiliary valve body, and then realizing water flow; when the user When no water is used, the valve clack is pressed tightly against the main valve body again by the elastic force of the spring itself.

More preferably, the end of the valve flap connected to the main valve body is conical, and the top of the cone of the valve flap can effectively guide and divert the medium and reduce resistance.

More preferably, the cross-sectional area of the cavity of the auxiliary valve body is larger than the cross-sectional area of the flow channel of the main valve body, so that the cross-sectional area of the flow space formed after the valve flap moving stroke is compressed is larger than the nominal diameter cross-sectional area , further reducing resistance.

More preferably, the main valve body, the auxiliary valve body and the valve disc are made of polymer engineering plastics, which will not cause secondary pollution to the medium.

More preferably, the O-ring is made of nitrile rubber, which does not cause secondary pollution to the medium.

More preferably, the spring is made of stainless steel, which does not cause secondary pollution to the medium.

More preferably, a guide device is provided between the valve clack and the auxiliary valve body, which avoids the problem of weakened sealing performance caused by spring deformation after the valve clack undergoes repeated reciprocating movements under pressure, and improves the service life of the valve.

More preferably, the guide device is a telescopic guide column, and the spring is sleeved outside the telescopic guide column, which has a simple structure and is easy to realize. The spring sleeved outside the telescopic guide column saves space and reduces water flow resistance.

The beneficial effects produced by the utility model:

1. Anti-interference: The valve disc and O-ring are always pressed tightly on the main valve body by the spring, and the O-ring and the main valve body are sealed in a line seal, which is sensitive and reliable, and can maintain a sealed closed state under a certain range of medium pressure fluctuations , avoid being disturbed by subtle pressure changes, solve the problem that the one-way valve in the prior art is easy to interfere and cause water leakage, and save losses for customers;

2. Small pressure loss: the top of the disc cone can effectively guide the diversion of the medium and reduce resistance; the cross-sectional area of the flow space formed after the valve disc travel is compressed is larger than the nominal diameter cross-sectional area, further reducing resistance;

3. Environmental protection: the product is made of polymer engineering plastics, the O-ring is made of nitrile rubber, and the spring is made of stainless steel, which will not cause secondary pollution to the medium.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the structural representation of the utility model;

The labels in the figure are: 1. Main valve body; 2. Auxiliary valve body; 3. Disc; 4. Spring; 5. O-ring.

detailed description

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment. Embodiments of the present utility model include but are not limited to the following examples.

Example 1

As shown in Figure 1, an encrypted multifunctional environmental protection check valve includes a main valve body 1 and an auxiliary valve body 2, the auxiliary valve body 2 is arranged at the outlet end of the main valve body 1, and the auxiliary valve body 2 A valve disc 3 is provided, one side of the valve disc 3 leans against the auxiliary valve body 2 through a spring 4, the other side of the valve disc 3 forms a seal with the outlet end of the main valve body 1, and the valve disc 3 and the main valve body 1 An O-ring 5 is provided on the end face forming the seal.

In this embodiment, the valve transmission part of the main valve body 1 adopts a disc-type magnetic password locking device, and its shape is an outer hexagon. To close the valve, a special internal hexagonal password magnetic tool must be used to make the valve transmission mechanism bite and open and close the valve, so that only managers with special tools can control the pipeline system.

The spring 4 is always in a certain compressed state. When there is no water flow, the valve disc 3 is always pressed against the main valve body 1 by the elastic force of the spring 4 itself, and the O-ring 5 passes between the valve disc 3 and the main valve body 1. Sealing, the line seal between the O-ring 5 and the main valve body 1 is sensitive and reliable, and can maintain a sealed closed state under a certain range of medium pressure fluctuations; when the user actively uses water, the pressure difference between the front and rear of the valve becomes larger, thereby overcoming the spring The elastic force of the spring 4 pushes the valve disc 3 to move to the auxiliary valve body 2, thereby realizing water flow; when the user does not use water, relying on the elastic force of the spring 4 itself, the valve disc 3 is pressed against the main valve body 1 again to prevent the water from flowing backward.

This embodiment solves the problems of inconvenient management of existing valves and the influence of fluid pressure fluctuations in pipelines on users.

Example 2

Further optimization is carried out on the basis of an encrypted multi-functional environmental protection check valve described in Example 1, the end of the disc 3 connected to the main valve body 1 is conical; the cavity of the auxiliary valve body 2 The cross-sectional area of the cavity is greater than that of the flow channel of the main valve body 1 .

The setting of this embodiment is to reduce the pressure loss. The top of the valve disc 3 can effectively guide the diversion of the medium and reduce the resistance; the cross-sectional area of the flow space formed after the valve disc 3 is compressed is larger than the cross-sectional area of the nominal diameter. , to further reduce resistance and save transportation energy.

Example 3

On the basis of a kind of encrypted multifunctional environmental protection check valve described in embodiment 1 or 2, further optimization is carried out, the material of the main valve body 1, the auxiliary valve body 2 and the valve disc 3 is polyoxymethylene material, and the O The material of the type ring 5 is NBR, and the material of the spring 4 is stainless steel.

The setting of this embodiment prevents the valve from causing secondary pollution to the medium, and solves the problem that the existing metal valve easily causes secondary pollution.

Example 4

Further optimization is carried out on the basis of an encrypted multifunctional environmental protection check valve described in embodiment 1 or 2, the material of the main valve body 1, the auxiliary valve body 2 and the valve disc 3 is polycarbonate material, and the The material of the O-ring 5 is NBR, and the material of the spring 4 is stainless steel.

The setting of this embodiment prevents the valve from causing secondary pollution to the medium, and solves the problem that the existing metal valve easily causes secondary pollution.

Example 5

On the basis of an encrypted multifunctional environmental protection check valve described in embodiment 1 or 2, further optimization is carried out, the material of the main valve body 1, the auxiliary valve body 2 and the valve flap 3 is polyphenylene sulfide material, so The material of the O-ring 5 is NBR, and the material of the spring 4 is stainless steel.

The setting of this embodiment prevents the valve from causing secondary pollution to the medium, and solves the problem that the existing metal valve easily causes secondary pollution.

Example 6

Further optimization is carried out on the basis of an encrypted multifunctional environmental protection check valve described in Example 3. A guide device is provided between the valve disc 3 and the auxiliary valve body 2, and the guide device is a telescopic guide column. The spring 4 is sleeved outside the telescopic guide column.

If there is no setting in this embodiment, after the disc 3 is pressed back and forth for many times, the offset and deformation of the spring 4 will make the contact between the disc 3 and the main valve body 1 not tight, which will affect the service life of the valve. .

This embodiment is provided so that the spring 4 does not shift or deform, and the reciprocating motion of the valve disc 3 is always on a fixed track, so the setting of this embodiment improves the service life of the valve; the spring 4 is sleeved outside the telescopic guide column It also has the effect of saving space and reducing water flow resistance.

The above is the embodiment of the present utility model. The utility model is not limited to the above-mentioned embodiment, anyone should know that the structural changes made under the enlightenment of the utility model, all technical solutions that are the same as or similar to the utility model, all fall into the protection scope of the utility model within.

Claims (8)

1. An encrypted multi-functional environmental protection check valve, comprising a main valve body (1) and an auxiliary valve body (2), the auxiliary valve body (2) is arranged at the outlet end of the main valve body (1), characterized in that , the auxiliary valve body (2) is provided with a valve disc (3), one side of the valve disc (3) leans against the auxiliary valve body (2) through a spring (4), and the other side of the valve disc (3) The side forms a seal with the outlet end of the main valve body (1), and an O-ring (5) is arranged on the end face of the valve disc (3) forming a seal with the main valve body (1). 2. An encrypted multifunctional environmental protection check valve according to claim 1, characterized in that: the end of the disc (3) connected to the main valve body (1) is conical. 3. An encrypted multifunctional environmental protection check valve according to claim 1 or 2, characterized in that: the cross-sectional area of the cavity of the auxiliary valve body (2) is larger than that of the flow channel of the main valve body (1) cross-sectional area. 4. An encrypted multifunctional environmental protection check valve as claimed in claim 1, characterized in that: the material of the main valve body (1), auxiliary valve body (2) and valve disc (3) is polymer engineering plastic. 5. An encrypted multifunctional environmental protection check valve as claimed in claim 4, characterized in that: the material of the O-ring (5) is NBR. 6. An encrypted multifunctional environmental protection check valve according to claim 4 or 5, characterized in that: the material of the spring (4) is stainless steel. 7. An encrypted multifunctional environmental protection check valve according to claim 1, characterized in that: a guiding device is provided between the valve disc (3) and the auxiliary valve body (2). 8. An encrypted multifunctional environmental protection check valve as claimed in claim 7, characterized in that: the guide device is a telescopic guide column, and the spring (4) is sheathed outside the telescopic guide column.