CN2491663Y - Two-way single flow valve - Google Patents

Abstract

A two-way check valve, mainly composed of a valve sleeve (1), a valve body (2), a valve core (3), an upper snap ring (4), a lower snap ring (5), and a water flow cavity (6), wherein The valve body (2) is formed with a bypass nozzle (21), a water supply hole (22), and an upper snap ring (4) and a lower snap ring (5) are built in, and the valve core (3) can slide therebetween. A valve sleeve (1) is arranged outside the valve body (2) to form a water flow cavity (6). The utility model is used in solar energy system engineering to realize the automatic water emptying function of the system pipeline, has a simple structure, is easy to manufacture, can produce series products of various specifications, and is easy to use, maintain and repair.

Description

Two-way check valve

The utility model relates to a special valve used in a water supply system, in particular to a two-way single-flow valve used for stopping a pump and controlling the return flow of a return water bypass.

In the general water supply system, during each interval of water supply, that is, when the pump is stopped, there will be water flow back to the pump in the system. According to different system layouts, the backflow has a certain potential energy, which can be converted into pressure energy or kinetic energy when it returns. Shocking the pump, which can reverse the pump or shock the blades of the pump, can be regarded as the effect of a fixed intermittent periodic shock load under certain circumstances. This situation has an adverse effect on the pump and its adjacent systems. When the problem is serious, the "water hammer" phenomenon when the water supply system backflows occurs. According to the specific conditions of the water supply system, the technical solution that the water flow returned by the water system no longer passes through the water pump channel, but automatically flows back to the water source connected to the water pump suction port through the bypass nozzle of the valve. There is no technical solution similar to the above in the country in the near future, so designing a two-way check valve that meets the above technical requirements will be a top priority.

The purpose of this utility model is to provide a water pump that returns water from the water system no longer through the water pump channel, but can automatically flow back to the water pump to absorb water through the bypass nozzle of the valve body during the intermittent time of each water supply. A two-way check valve for the water source connected to the port.

The utility model is achieved through the following technical solutions:

A two-way check valve, mainly composed of a valve sleeve (1), a valve body (2), a valve core (3), an upper snap ring (4), a lower snap ring (5), and a water flow chamber (6), wherein The valve body (2) is formed with a bypass nozzle (21), two sets of circular water supply holes (22), the valve body (2) is built with an upper snap ring (4) and a lower snap ring (5), and is equipped with The valve core (3), which can slide between the upper snap ring (4) and the lower snap ring (5), is equipped with a cylindrical valve sleeve (1) outside the valve body (2) to form a water flow chamber (6).

working principle:

When the water pump starts to feed water, the valve core (3) is pushed by the water pressure to slide to the A end of the valve body (2), and is stopped by the upper snap ring (4), at this moment the bypass nozzle (21) is blocked. Water will flow into the inner cavity of the valve sleeve (1) through a group of water supply holes (22) at the B end of the valve body (2), and then enter the A end of the valve body (2) through a group of water supply holes (22) at the A end to flow into the water system.

When the water pump stops running, the water in the water system returns to the valve body (2), and pushes the valve core (3) to slide towards the B end, and is stopped by the lower snap ring (5). At this time, a group of water supply holes (22 ) is blocked by the spool (3), the backflow water can only flow out through the bypass nozzle (21), and then flow to the pipeline at the suction port of the water pump through the additional bypass pipeline to return to the water source.

The utility model has the following advantages and effects:

1. The utility model can be effectively applied to the water supply system. It is installed at the water pump outlet, and its return channel is connected to the water pump suction port pipeline through the bypass nozzle to protect the water pump from reverse rotation or damage to the blades of the water pump. .

2. The structural device of the present utility model has the automatic feature of bypass backflow. If it is used in the solar water heating system project, it can realize the automatic emptying and antifreezing effect in the pipeline of the system in winter.

3. The utility model has a reasonable and simple structure, is easy to manufacture, and is easy to use, maintain and repair.

The descriptions of the attached drawings are as follows:

Fig. 1 is an overall sectional view of the utility model

Figure 2A is a front sectional view of the utility model valve body

Fig. 2B is a side view of the utility model valve body

Fig. 3A is the front sectional view of the utility model valve sleeve

Figure 3B is a side view of the utility model valve sleeve

Fig. 4 is the front sectional view of the valve core of the present invention

In the figure: 1-valve sleeve, 2-valve body, 21-bypass nozzle, 22-water supply hole, 23-snap ring groove,

  3-Spool, 4-Upper snap ring, 5-Lower snap ring, 6-Water flow chamber

Below in conjunction with accompanying drawing and embodiment for further explanation:

As can be seen from Figure 1, the utility model is mainly composed of a valve sleeve 1, a valve body 2, a valve core 3, an upper snap ring 4, a lower snap ring 5, and a water flow chamber 6, wherein the valve body 2 is formed with a bypass nozzle 21 , two sets of circular water supply holes 22, the upper snap ring 4 and the lower snap ring 5 are built in the valve body 2, and the valve core 3 that can slide between the upper snap ring 4 and the lower snap ring 5 is installed, in the valve body 2 A cylindrical valve sleeve 1 is installed outside to form a water flow cavity 6 .

It can be seen from the figure that a valve sleeve 1 is installed outside the valve body 2 to form a water flow cavity 6, which can stabilize the flow rate and flow state of the water flow and facilitate continuous flow in the pipeline.

It can be seen that the utility model determines the size of the two-way check valve according to the specific requirements of the water supply system, and can produce series products of various specifications.

From Fig. 2A and Fig. 2B, it can be seen that the valve body 2 is an important part of the present utility model, and its structure is composed of a bypass nozzle 21, two groups of water supply holes 22, and two snap ring grooves 23, wherein two can be seen from Fig. 2B Groups of water supply holes 22, each group should be evenly distributed on the circumference, the number and size of the holes depends on the flow of the system.

As shown in Fig. 3A and Fig. 3B, the structure of the valve sleeve 1 of the present invention, the size of its cavity depends on the flow rate and flow state of the water flow.

Shown in Fig. 4, the structural form of the spool of the present utility model.

Claims (2)

1, a kind of two-way one-way valve, mainly by valve pocket (1), valve body (2), spool (3), upper snap ring (4), the next snap ring (5), current cavity (6) is formed, it is characterized in that: be shaped on the bypass mouth of pipe (21) on the valve body (2), two groups of circular water holes (22) of giving, valve body (2) is built-in with upper snap ring (4) and the next snap ring (5), and the spool (3) that can slide between upper snap ring (4) and the next snap ring (5) is housed, and cylindrical valve pocket (1) is housed outside valve body (2) constitutes current cavitys (6).

2, two-way one-way valve according to claim 1 is characterized in that: valve body (2), mainly by the bypass mouth of pipe (21), give water hole (22) for two groups, and two annular grooves (23) are formed.

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