CN220957093U - Waterproof hammer structure of slow-closing check valve in pipeline system - Google Patents

Abstract

The utility model relates to a water hammer preventing structure of a slow-closing check valve in a pipeline system, which belongs to the technical field of check valves and comprises the following components: the balance slow-closing oil cylinder is rotationally connected with a rotary valve rod in the check valve main body; the mounting seat is rotationally connected with the cylinder bottom in the balanced slow-closing cylinder; the utility model can be slowly closed in the last stroke of the valve check process, reduces water hammer, eliminates pipeline vibration, and protects the water pump and other spare parts of the system; the main function of the structure is to achieve the aim of slow closing by balancing the slow closing oil cylinder, reduce closing water hammer and ensure the safety of the pipeline system.

Description

Waterproof hammer structure of slow-closing check valve in pipeline system

Technical Field

The utility model relates to the technical field of check valves, in particular to a water hammer preventing structure of a slow-closing check valve in a pipeline system.

Background

The check valve is a valve with a circular valve clack as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure. Belongs to automatic valves, which are also called check valves, one-way valves, reflux valves or isolation valves. The water hammer is called a water hammer because of the inertia of pressure water flow when power is suddenly cut off or when the valve is closed too fast, and the water hammer generates water flow shock waves just like a hammer to strike. The force generated by the water shock wave back and forth can sometimes be large, thereby damaging the valve and the water pump. At present, the conventional check valve has an unsatisfactory water hammer eliminating effect, so the utility model structurally improves the structure, and provides a water hammer preventing structure of a slow-closing check valve in a pipeline system.

Disclosure of utility model

Aiming at the problems of the prior art, the utility model aims to provide a water hammer preventing structure of a slow-closing check valve in a pipeline system.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The slow-closing check valve is waterproof hammer structure in piping system, includes:

The balance slow-closing oil cylinder is rotationally connected with a rotary valve rod in the check valve main body;

and the mounting seat is rotationally connected with the cylinder bottom in the balanced slow-closing cylinder.

As a further technical scheme of the present utility model, the balanced slow-closing cylinder includes:

The inner diameter of the cavity of the upper buffer section of the cylinder is smaller than the inner diameter of the bottom side in the cylinder, and the cylinder bottom is fixedly arranged at the bottom end outside the cylinder;

The cylinder cover is arranged at the upper end of the cylinder barrel, and a first sealing ring is arranged between the cylinder cover and the cylinder barrel;

The piston is arranged in the cylinder barrel in a sliding manner, and a second sealing ring is arranged between the piston and the cylinder barrel;

And one end of the piston rod is inserted in the cylinder barrel in a sliding way and is fixedly connected with the piston, a third sealing ring is arranged on a cylinder cover penetrated by the piston rod, and one end of the piston rod is rotationally connected with a rotary valve rod in the check valve main body.

Compared with the prior art, the utility model has the beneficial effects that: the utility model can be slowly closed in the last stroke of the valve check process, reduces water hammer, eliminates pipeline vibration, and protects the water pump and other spare parts of the system; the main function of the structure is to achieve the aim of slow closing by balancing the slow closing oil cylinder, reduce closing water hammer and ensure the safety of the pipeline system.

Drawings

Fig. 1 is a schematic structural view of a water hammer preventing structure of a slow-closing check valve in a pipeline system.

Fig. 2 is a schematic view showing a construction of the slow-closure check valve in which a water hammer preventing structure is installed at one side of the check valve in a piping system.

In the figure: 1-cylinder barrel, 2-cylinder cover, 3-first sealing ring, 4-piston rod, 5-piston, 6-third sealing ring, 7-mount pad, 8-cylinder bottom, 9-second sealing ring, 10-check valve main part.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

The embodiment of the utility model is realized in such a way that the slow-closing check valve as shown in fig. 1 to 2 has a water hammer preventing structure in a pipeline system, comprising:

The balance slow-closing oil cylinder is rotationally connected with a rotary valve rod in the check valve main body 10;

the mounting seat 7 is rotationally connected with a cylinder bottom 8 in the balanced slow-closing cylinder.

In this embodiment, the balanced slow-closing cylinder includes:

The inner diameter of a cavity of the upper buffer section of the cylinder barrel 1 is smaller than the inner diameter of the bottom side in the cylinder barrel 1, and the cylinder bottom 8 is fixedly arranged at the bottom end outside the cylinder barrel 1;

the cylinder cover 2 is arranged at the upper end of the cylinder barrel 1, and a first sealing ring 3 is arranged between the cylinder cover 2 and the cylinder barrel 1;

The piston 5 is arranged in the cylinder barrel 1 in a sliding manner, and a second sealing ring 9 is arranged between the piston 5 and the cylinder barrel 1;

The piston rod 4, one end slip interlude in the cylinder 1, and with piston 5 fixed connection, be provided with third sealing washer 6 on the cylinder cap 2 that piston rod 4 passed, piston rod 4 one end with the rotation valve rod in the check valve main part 10 rotates to be connected.

Working principle: when the device is used, the device is fixedly arranged on one side of the check valve, so that one end of the piston rod 4 is rotationally connected with a rotary valve rod in the check valve main body 10, the device can be slowly closed by the last 15% stroke in the check valve process, the water hammer is reduced, the vibration of a pipeline is eliminated, and the water pump and other spare parts of the system are protected; the main function of the structure is to achieve the aim of slow closing by balancing the slow closing oil cylinder, reduce closing water hammer and ensure the safety of the pipeline system.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (1)

1. Slowly close check valve waterproof hammer structure in piping system, its characterized in that includes:

The balance slow-closing oil cylinder is rotationally connected with a rotary valve rod in the check valve main body;

the mounting seat is rotationally connected with the cylinder bottom in the balanced slow-closing cylinder;

The balanced slow-closing oil cylinder comprises:

The inner diameter of the cavity of the upper buffer section of the cylinder is smaller than the inner diameter of the bottom side in the cylinder, and the cylinder bottom is fixedly arranged at the bottom end outside the cylinder;

The cylinder cover is arranged at the upper end of the cylinder barrel, and a first sealing ring is arranged between the cylinder cover and the cylinder barrel;

The piston is arranged in the cylinder barrel in a sliding manner, and a second sealing ring is arranged between the piston and the cylinder barrel;

And one end of the piston rod is inserted in the cylinder barrel in a sliding way and is fixedly connected with the piston, a third sealing ring is arranged on a cylinder cover penetrated by the piston rod, and one end of the piston rod is rotationally connected with a rotary valve rod in the check valve main body.