CN214367986U

CN214367986U - Stop check valve

Info

Publication number: CN214367986U
Application number: CN202023002108.4U
Authority: CN
Inventors: 李宗府
Original assignee: Ninghai Hengzhen Copper Co ltd
Current assignee: Ninghai Hengzhen Copper Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-10-08
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a stop check valve, which comprises a valve body, a valve cover, a valve rod, a valve plate, a pressing cap, an O-shaped ring, a filler, a valve clack, a spring, a nameplate, a check nut and a hand wheel after improvement; the valve cover is screwed on the valve body, the valve rod is inserted in the valve cover and is pressed tightly by the pressing cap; valve plate, O type circle, valve clack, spring are located the cavity that valve gap and valve body correspond, and the valve clack corresponds to the tip of valve plate, and the spring corresponds between valve rod and the valve plate. The stop check valve is a multi-purpose valve with the functions of a stop valve and a check valve. The structure form is similar to that of a stop valve, but the valve rod is not fixedly connected with the valve clack. When the valve rod descends to press the valve clack on the valve seat, the valve rod plays a role of a stop valve; the valve rod acts as a check valve when lifted. The use of a stop check valve saves installation effort and space.

Description

Stop check valve

Technical Field

The utility model relates to a relevant technical field of valve, what specifically say relates to is a stop check valve.

Background

As is well known, a check valve is a valve in which an opening and closing member is a circular valve flap and operates by its own weight and pressure of a medium to block the reverse flow of the medium. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved. The disadvantages are high resistance and poor sealing performance when closed. However, the existing check valve has a single structure and function, and those skilled in the art want to have a multi-purpose valve with functions of a stop valve and a check valve.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above-mentioned deficiencies, the present invention provides a check valve; the stop check valve is a multi-purpose valve with the functions of a stop valve and a check valve. The structure form is similar to that of a stop valve, but the valve rod is not fixedly connected with the valve clack. When the valve rod descends to press the valve clack on the valve seat, the valve rod plays a role of a stop valve; the valve rod acts as a check valve when lifted. The use of a stop check valve saves installation effort and space.

The utility model is realized in such a way that a stop check valve is constructed, which is characterized in that; the valve comprises a valve body, a valve cover, a valve rod, a valve plate, a pressing cap, an O-shaped ring, filler, a valve clack, a spring, a nameplate, a check nut and a hand wheel; the valve cover is screwed on the valve body, the valve rod is inserted in the valve cover and is pressed tightly by the pressing cap; valve plate, O type circle, valve clack, spring are located the cavity that valve gap and valve body correspond, and the valve clack corresponds to the tip of valve plate, and the spring corresponds between valve rod and the valve plate.

The stop check valve is characterized in that the stop check valve is provided with a stop hole; the nameplate and the locknut correspond to the end part of the valve rod.

The stop check valve is characterized in that the stop check valve is provided with a stop hole; the valve cover is screwed on the valve body in an inclined way.

The stop check valve is characterized in that the stop check valve is provided with a stop hole; the hand wheel is arranged on the top of the valve rod and is screwed tightly through the anti-loosening nut.

The utility model has the advantages of as follows: the utility model provides a stop check valve through improvement, which comprises a valve body, a valve cover, a valve rod, a valve plate, a pressing cap, an O-shaped ring, a filler, a valve clack, a spring, a nameplate, a check nut and a hand wheel; the valve cover is screwed on the valve body, the valve rod is inserted in the valve cover and is pressed tightly by the pressing cap; valve plate, O type circle, valve clack, spring are located the cavity that valve gap and valve body correspond, and the valve clack corresponds to the tip of valve plate, and the spring corresponds between valve rod and the valve plate. The stop check valve is a multi-purpose valve with the functions of a stop valve and a check valve. The structure form is similar to that of a stop valve, but the valve rod is not fixedly connected with the valve clack. When the valve rod descends to press the valve clack on the valve seat, the valve rod plays a role of a stop valve; the valve rod acts as a check valve when lifted. The use of a stop check valve saves installation effort and space.

Drawings

FIG. 1 is a schematic overall view of a check valve according to the present invention;

FIG. 2 is a schematic internal view of the check valve of the present invention;

fig. 3 is a schematic view of the middle hand wheel of the present invention.

Wherein: the valve comprises a valve body 1, a valve cover 2, a valve rod 3, a valve plate 4, a compression cap 5, an O-shaped ring 6, a filler 7, a valve clack 8, a spring 9, a nameplate 10, a check nut 11 and a hand wheel 12.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 3, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present invention provides a check valve by improvement, as shown in fig. 1 to 3, which can be implemented as follows; the valve comprises a valve body 1, a valve cover 2, a valve rod 3, a valve plate 4, a pressing cap 5, an O-shaped ring 6, a filler 7, a valve clack 8, a spring 9, a nameplate 10, a check nut 11 and a hand wheel 12; the valve cover 2 is screwed on the valve body 1, the valve rod 3 is inserted in the valve cover 2 and is pressed tightly by the pressing cap 5; valve plate 4, O type circle 6, valve clack 8, spring 9 are located valve gap 2 and the cavity that valve body 1 corresponds, and valve clack 8 corresponds to the tip of valve plate 4, and spring 9 corresponds between valve rod 3 and the valve plate 4.

When the stop check valve is implemented in the utility model; the nameplate 10 and the locknut 11 correspond to the end of the valve rod 3.

When the stop check valve is implemented in the utility model; the valve cover 2 is screwed on the valve body 1 in an inclined way. The hand wheel 12 is positioned at the top of the product, the hand wheel 12 is pressed on the valve rod 3, and then a gasket and a nut are screwed tightly.

The stop check valve is a multi-purpose valve with the functions of a stop valve and a check valve. The structure form is similar to that of a stop valve, but the valve rod is not fixedly connected with the valve clack. When the valve rod descends to press the valve clack on the valve seat, the valve rod plays a role of a stop valve; the valve rod acts as a check valve when lifted. The use of a stop check valve saves installation effort and space.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stop check valve, characterized by; the check valve comprises a valve body (1), a valve cover (2), a valve rod (3), a valve plate (4), a pressing cap (5), an O-shaped ring (6), a filler (7), a valve clack (8), a spring (9), a nameplate (10), a check nut (11) and a hand wheel (12); the valve cover (2) is screwed on the valve body (1), the valve rod (3) is inserted in the valve cover (2) and is pressed by the pressing cap (5); valve plate (4), O type circle (6), valve clack (8), spring (9) are located valve gap (2) and the cavity that valve body (1) corresponds, and valve clack (8) are corresponding to the tip of valve plate (4), and spring (9) are corresponding to between valve rod (3) and valve plate (4).

2. The check valve of claim 1, wherein; the nameplate (10) and the locknut (11) correspond to the end part of the valve rod (3).

3. The check valve of claim 1, wherein; the valve cover (2) is screwed on the valve body (1) in an inclined way.

4. The check valve of claim 1, wherein; the hand wheel (12) is arranged on the top of the valve rod (3) and is screwed tightly through the locknut (11).