CN211288867U - Spring check valve - Google Patents

Abstract

The utility model discloses a spring type check valve, which is characterized by comprising a valve body, a baffle plate, a spring, a support rod and a fixing plate; the valve body is provided with a water inlet and a water outlet; Installation steps are installed on the installation steps; a fixing plate is installed on the installation steps; a spring is installed between the fixing plate and the baffle; a sealing ring is installed on the baffle. The utility model has the advantages of simple structure, convenient use, better sealing performance, and can also effectively prevent backflow of fluid.

Description

A spring type check valve

【Technical field】

The utility model relates to the technical field of valves, in particular to a spring-type check valve.

【Background technique】

The check valve is one of many pipeline valves. It is widely used to control the one-way flow of liquid media in the pipeline. In the drainage system, the check valve is usually installed at the liquid outlet of the pump to prevent the backflow of water. Harm to the water pump, some check valves have poor sealing effect, complex structure and long assembly time. For this purpose, a spring-type check valve is proposed.

[Content of the invention]

The purpose of the utility model is to propose a spring-type check valve in order to solve the problems of the prior art.

In order to achieve the above purpose, the utility model provides the following technical solutions: a spring-type check valve, which is characterized by including a valve body, a baffle plate, a spring, a screw rod and a fixed plate; the valve body is provided with a water inlet and a water outlet; Both the water inlet and the water outlet are provided with installation steps; a fixing plate is installed on the installation step; a spring is installed between the fixing plate and the baffle; a sealing ring is installed on the baffle; The plate includes a bottom plate and a supporting rib; the supporting rib is welded on the bottom plate; the bottom plate is provided with a through-hole plate and a bolt fixing plate is arranged outside the plate; both ends of the spring are welded with a screw rod; The plates are connected; the other end of the spring is fixedly mounted on the bottom plate through a screw rod and a nut; the water inlet and the water outlet are provided with quick-install flanges.

The beneficial effects of the utility model are as follows: the device has a simple structure, is convenient to use, has better sealing performance, and can also effectively prevent backflow of fluid.

【Description of drawings】

Figure 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the structure of the fixing plate of the present invention.

Legend: 1 valve body; 2 spring; 3 screw rod; 4 baffle plate; 5 sealing ring; 6 fixing block; 601 bottom plate; 602 support ribs; 603 bolt fixing plate; 7 water inlet; 8 water outlet; 9 installation steps; 10 nut.

Detailed ways

Hereinafter, we will further describe the spring-type check valve of the present invention with reference to the accompanying drawings.

1-2, a spring-type check valve of this embodiment is characterized by a valve body 1, a baffle 4, a spring 2, a screw 3 and a fixed plate 6; the valve body 1 is provided with an inlet The water inlet 7 and the water outlet 8; the water inlet 7 and the water outlet 8 are provided with installation steps 9; the installation steps 9 are installed with a fixed plate 6; Spring 2; a sealing ring 5 is installed on the baffle plate 4; the fixing plate 6 includes a bottom plate 601 and a support rib 602; a support rib 602 is welded on the bottom plate 601; The bottom plate 601 is provided with a bolt fixing plate 603; both ends of the spring 2 are welded with a screw 3; one end of the spring 2 is connected to the baffle 4 through the screw 3; the other end of the spring 2 is connected to the nut through the screw 3 10 is fixedly installed on the bottom plate 601; the water inlet 7 and the water outlet 8 are provided with quick-install flanges.

In the working process of the utility model, firstly, the water inlet 7 and the water outlet 8 are connected to the pipeline through the quick connection flange, and then the water enters from the water inlet 7, the spring 2 is contracted by the pressure of the water, and the baffle plate 4 moves downward, At this time, the water inlet 7 and the water outlet 8 are connected, and the water enters from the water inlet 7 and then flows out from the water outlet 8. When the water is closed, because the water inlet 7 loses the pressure of the water, the spring 2 begins to open, blocking the The block 4 moves upward until the sealing ring 5 touches the installation step 9. At this time, the water inlet 7 is separated from the water outlet 8, and the water flow cannot flow back from the water outlet 8 to the water inlet 7, which can effectively prevent backflow.

The beneficial effect of the utility model is that the device has a simple structure and is easy to use. By arranging quick-connect flanges at the water inlet 7 and the water outlet 8, the connection between the water inlet 7 and the water outlet 8 and the pipeline is quicker and more convenient, so that the The tightness between the valve and the pipeline is also better; by installing the sealing ring 5 on the baffle 4, when the pressure of the spring 2 is greater than the water pressure, the baffle 4 moves upward, so that the sealing ring 5 is tightly attached to the installation step 9, The effect of preventing backflow can be better.

The above embodiment is an illustration of the present utility model, not a limitation of the present utility model. Any simple transformation scheme of the present utility model belongs to the protection scope of the present utility model.

Claims (1)

1. A spring-type check valve, characterized by comprising a valve body (1), a baffle plate (4), a spring (2), a screw (3) and a fixed plate (6); the valve body (1) is provided with a There is a water inlet (7) and a water outlet (8); both the water inlet (7) and the water outlet (8) are provided with installation steps (9); a fixing plate (6) is installed on the installation steps (9) ); a spring (2) is installed between the fixing plate (6) and the baffle plate (4); a sealing ring (5) is installed on the baffle plate (4); the fixing plate (6) includes a bottom plate ( 601) and a supporting rib (602); a supporting rib (602) is welded on the bottom plate (601); a through hole (604) is provided on the bottom plate (601); plate (603); both ends of the spring (2) are welded with a screw (3); one end of the spring (2) is connected to the baffle (4) through the screw (3); the other end of the spring (2) The screw (3) and the nut (10) are fixedly mounted on the bottom plate (601); the water inlet (7) and the water outlet (8) are provided with quick-installation flanges.

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