CN206268515U - A kind of dismountable check-valves - Google Patents

Abstract

The utility model discloses a kind of dismountable check-valves, including the first valve body, the side of first valve body is connected with feed tube, and first the inside of valve body be fixed with screen pack, the screen pack is connected with check valve spool by adjustable spring, seal gasket is provided between the check valve spool and feed tube, sealing ring is provided between first valve body and the second valve body, the side of second valve body is connected with drain pipe.The utility model, screen pack is provided with by the inside of the first valve body, can carry out filtration treatment to the liquid being input into, it is to avoid impurity directly flows out from drain pipe, it is ensured that the purity of liquid；By adjusting fastening bolt; first valve body and the second valve body can be separated; the convenient impurity to valve inner is cleared up; valve inner is avoided to produce clogging; the surface of check valve spool is provided with epoxy anticorrosive coating; the erosion of check valve spool not liquid body can be protected, with etch-proof effect.

Description

A detachable check valve

technical field

The utility model relates to the technical field of valve equipment, in particular to a detachable check valve.

Background technique

Check valve refers to the valve that relies on the flow of the medium itself to automatically open and close the disc to prevent the backflow of the medium, also known as check valve, one-way valve, reverse flow valve, and back pressure valve. The check valve is a kind of automatic valve, its main function is to prevent the reverse flow of the medium, the reverse rotation of the pump and the drive motor, and the discharge of the container medium. According to the structure, the check valve can be divided into three types: lift check valve, swing check valve and butterfly check valve. Lift check valves can be divided into two types: vertical and straight-through. Swing check valves are divided into three types: single-disc, double-disc and multi-disc. Butterfly check valves are butterfly double discs and butterfly single discs. The above check valves can be divided into four types of connection forms: threaded connection, flange connection, welding and wafer connection. The function of the traditional check valve is relatively simple, and there is no filter and impurity removal function. The existing check valve is very inconvenient to disassemble. At the same time, the filtered impurities are easy to block inside the check valve, which affects the check valve. The working efficiency of the check valve is greatly limited.

Utility model content

The purpose of this utility model is to provide a detachable check valve to solve the inconvenient disassembly of the check valve proposed in the above-mentioned background technology. The problem of the working efficiency of the return valve.

In order to achieve the above object, the utility model provides the following technical solution: a detachable check valve, including a first valve body, one side of the first valve body is connected with a liquid inlet pipe, and the inside of the first valve body A filter screen is fixed, and the filter screen is connected to the check valve spool through a telescopic spring. A sealing rubber pad is provided between the check valve spool and the liquid inlet pipe. The first valve body and the second valve body A sealing ring is arranged between them, and a liquid outlet pipe is connected to one side of the second valve body.

Preferably, the surface of the check valve core is provided with an epoxy anti-corrosion coating.

Preferably, the surface of the first valve body is provided with a heavy-duty single-rivet clamp, and a fixing plate is installed on the heavy-duty single-rivet clamp.

Preferably, there are four fixing plates in total, and the four fixing plates are installed on the outer wall of the first valve body respectively, and the four fixing plates are connected by fastening bolts.

Preferably, the telescopic spring is connected to the valve core of the check valve by welding.

Compared with the prior art, the beneficial effects of the utility model are: the utility model has a scientific and reasonable structure, and is convenient and efficient to use; a filter screen is installed inside the first valve body, and the input liquid can be filtered to avoid impurities It flows directly from the outlet pipe to ensure the purity of the liquid; by adjusting the fastening bolts, the first valve body and the second valve body can be separated to facilitate the cleaning of impurities inside the valve body and avoid blockage inside the valve body , improve the practicability of the check valve; the surface of the check valve spool is provided with an epoxy anti-corrosion coating, which can protect the check valve spool from liquid erosion and has the effect of anti-corrosion, thus extending the check valve life. The service life of the valve spool.

Description of drawings

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

Fig. 2 is a structural schematic diagram of a heavy-duty single rivet clamp of the present invention;

Fig. 3 is a schematic structural diagram of the valve core of the check valve of the present invention.

In the figure: 1-inlet pipe; 2-check valve core; 3-sealing pad; 4-telescopic spring; 5-first valve body; 6-filter; 7-sealing ring; 8-second valve Body; 9-liquid outlet pipe; 10-heavy-duty single rivet clamp; 11-fixing plate; 12-fastening bolt; 13-epoxy anti-corrosion coating.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-3, an embodiment provided by the utility model: a detachable check valve, including a first valve body 5, one side of the first valve body 5 is connected with a liquid inlet pipe 1, and the second A filter 6 is fixed inside the first valve body 5, and a filter 6 is installed inside the first valve body 5, which can filter the input liquid to prevent impurities from directly flowing out of the liquid outlet pipe 9, ensuring the purity of the liquid , the filter screen 6 and the check valve core 2 are connected by a telescopic spring 4, a sealing rubber pad 3 is provided between the check valve core 2 and the liquid inlet pipe 1, and a sealing pad 3 is provided between the first valve body 5 and the second valve body 8 A sealing ring 7 is provided, a liquid outlet pipe 9 is connected to one side of the second valve body 8, and an epoxy anti-corrosion coating 13 is provided on the surface of the check valve core 2, which can protect the check valve valve. The core 2 is not eroded by the liquid and has the effect of anti-corrosion. The surface of the first valve body 5 is provided with a heavy-duty single rivet clamp 10, and a fixed plate 11 is installed on the heavy-duty single rivet clamp 10. The fixed plate 11 is provided with Four, and the four fixing plates 11 are respectively installed on the outer wall of the first valve body 5, and the four fixing plates 11 are connected by fastening bolts 12, and the first valve body 5 can be adjusted by adjusting the fastening bolts 12. Separated from the second valve body 8, it is convenient to clean the impurities inside the valve body and avoid blockage inside the valve body. The telescopic spring 4 and the check valve core 2 are connected by welding.

Specific use method: In the work of the utility model, the liquid medium enters from the liquid inlet pipe 1, and then the check valve spool 2 is washed away by the pressure of the flow of the liquid medium, so that the liquid medium is filtered through the filter screen 6, and finally It flows out from the liquid outlet pipe 9. When the medium does not flow, the telescopic spring 4 on the filter screen 6 pushes the check valve spool 2 against the mouth of the liquid inlet pipe 1 to avoid the phenomenon of backflow of the liquid medium. 1 and the check valve core 2 are provided with a sealing rubber pad 2, which can ensure the tightness of the check valve. When impurities are generated inside the first valve body 5, loosen the fastening bolt 12 and fasten the heavy-duty single rivet clamp 10 is removed, the impurities in the first valve body 5 can be cleaned, thereby improving the working efficiency of the check valve.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to fall within the scope of the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A detachable check valve, comprising a first valve body (5), characterized in that: a liquid inlet pipe (1) is connected to one side of the first valve body (5), and the first valve body The inside of (5) is fixed with a filter screen (6), the filter screen (6) is connected with the check valve spool (2) through the telescopic spring (4), and the check valve spool (2) is connected with the liquid inlet A sealing rubber pad (3) is provided between the pipes (1), a sealing ring (7) is provided between the first valve body (5) and the second valve body (8), and the second valve body (8 ) is connected with a liquid outlet pipe (9). 2. A detachable check valve according to claim 1, characterized in that: the surface of the check valve core (2) is provided with an epoxy anti-corrosion coating (13). 3. A detachable check valve according to claim 1, characterized in that: the surface of the first valve body (5) is provided with a heavy-duty single rivet clamp (10), and the heavy-duty single rivet clamp A fixed plate (11) is installed on the hoop (10). 4. A detachable check valve according to claim 3, characterized in that: there are four fixing plates (11) in total, and the four fixing plates (11) are respectively installed on the first valve body On the outer wall of (5), the four fixed plates (11) are connected by fastening bolts (12). 5. A detachable check valve according to claim 1, characterized in that: the telescopic spring (4) is connected to the check valve core (2) by welding.