CN216479112U - Check valve with filtering function - Google Patents

Abstract

The utility model relates to the technical field of check valves and discloses a check valve with a filtering function. According to the utility model, the filter screen is arranged at the position close to one end of the inner wall of the water inlet pipe, the auxiliary filtering mechanism is arranged at one end of the water inlet pipe, water flow passing through the valve body can be filtered, the pipe body is opened through the auxiliary filtering mechanism, and filtered impurities are cleaned.

Description

Check valve with filtering function

Technical Field

The utility model relates to the technical field of check valves, in particular to a check valve with a filtering function.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. 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.

Some check valves on the market at present generally do not have a filtering structure, and the media passing through the check valve are more or less doped with impurities, and if the media are not treated, the impurities are accumulated over a long period of time, and the service life of the check valve can be influenced.

We have proposed a check valve with a filtering function in order to solve the problems set forth above.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In view of the above-mentioned shortcomings in the prior art, an object of the present invention is to provide a check valve with a filtering function, so as to solve the problem that some existing check valves in the market proposed in the above-mentioned prior art generally do not have a filtering structure, and the media passing through the check valve are more or less doped with some impurities, and if the impurities are not treated, the impurities accumulate over the day and the month, which may affect the service life of the check valve.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme:

a check valve with a filtering function comprises a check valve main body, a bolt and a nut, wherein a valve cover is arranged at the top of the check valve main body, a water inlet pipe is connected to the position, close to the bottom, of one side of the check valve main body, a water outlet pipe is connected to the position, close to the top, of the other side of the check valve main body, a filtering net is arranged on the position, close to one end, of the inner wall of the water inlet pipe, a filtering auxiliary mechanism is arranged at one end of the water inlet pipe, and a lead-in pipe is arranged at one end of the filtering auxiliary mechanism;

the check valve main body comprises a valve body, and a flange plate is fixedly connected to the top of the valve body;

the valve cover comprises a cover body, the center of the top of the cover body is connected with a lifting pipe, a valve plate is movably connected below the lifting pipe, and the cover body and the flange plate are fixed through bolts and nuts;

the end surface of the water inlet pipe is provided with a movable groove, the filtering auxiliary mechanism comprises a connecting pipe, one end surface of the connecting pipe is fixedly connected with a movable pipe, the inner wall of the connecting pipe is provided with an internal thread, and the movable pipe is movably connected with the movable groove;

and the outer surface of the leading-in pipe is provided with an external thread matched with the internal thread at a position close to one end face.

Preferably, the lower surface of the valve plate is fixed with a wear-resistant waterproof rubber pad.

Preferably, the outer side surface of the connecting pipe is symmetrically connected with auxiliary handles.

(III) advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

(1) according to the utility model, the filter screen is arranged at the position, close to one end, of the inner wall of the water inlet pipe, and the auxiliary filtering mechanism is arranged at one end of the water inlet pipe, so that water flow passing through the valve body can be filtered, the pipe body is opened through the auxiliary filtering mechanism, and filtered impurities are cleaned, so that the problem that the service life of a check valve is possibly influenced due to the fact that the check valve in the existing market is not provided with a filtering structure generally, and the medium passing through the check valve is doped with a little or more impurities if the check valve is not processed is solved.

(2) According to the utility model, the wear-resistant waterproof rubber pad is fixed on the lower surface of the valve plate, so that the valve plate wear can be reduced, the service life of the valve plate can be prolonged, and the non-return effect can be further improved.

(3) According to the utility model, the auxiliary handles are symmetrically connected to the outer side surface of the connecting pipe, so that a worker can conveniently rotate the filtering auxiliary mechanism.

Drawings

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

FIG. 2 is a schematic front view of a check valve with a filtering function according to the present invention;

FIG. 3 is a schematic side view of a check valve with filtering function according to the present invention;

fig. 4 is a schematic sectional view showing the structure of the check valve with a filtering function according to the present invention.

Wherein: 1 check valve body, 101 valve body, 102 flange plate, 2 valve cover, 201 cover body, 202 lifting pipe, 3 water inlet pipe, 301 movable groove, 4 water outlet pipe, 5 filter screen, 6 filter auxiliary mechanism, 601 connecting pipe, 6011 internal thread, 602 movable pipe, 603 auxiliary handle, 7 leading-in pipe, 701 external thread, 8 valve plate, 9 bolt, 10 nut, 11 wear-resisting waterproof rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a check valve with filtering function; the check valve comprises a check valve body 1, bolts 9 and nuts 10, wherein a valve cover 2 is arranged at the top of the check valve body 1, a water inlet pipe 3 is connected at a position, close to the bottom, of one side of the check valve body 1, a water outlet pipe 4 is connected at a position, close to the top, of the other side of the check valve body 1, a filter screen 5 is arranged at a position, close to one end, of the inner wall of the water inlet pipe 3, a filtering auxiliary mechanism 6 is arranged at one end of the water inlet pipe 3, a guide pipe 7 is arranged at one end of the filtering auxiliary mechanism 6, the check valve body 1 comprises a valve body 101, a flange plate 102 is fixedly connected to the top of the valve body 101, the valve cover 2 comprises a cover body 201, a lifting pipe 202 is connected to the center position of the top of the cover body 201, a valve plate 8 is movably connected below the lifting pipe 202, the cover body 201 and the flange plate 102 are fixed through the bolts 9 and the nuts 10, a movable groove 301 is formed in the end face of the water inlet pipe 3, the filtering auxiliary mechanism 6 comprises a connecting pipe 601, one end face of the connecting pipe 601 is fixedly connected with a movable pipe 602, an internal thread 6011 is formed on the inner wall of the connecting pipe 601, the movable pipe 602 is movably connected with the movable groove 301, and an external thread 701 matched with the internal thread 6011 is formed on the outer surface of the introducing pipe 7 close to one end face;

according to the illustration in fig. 4, as a preferred embodiment of the present invention: the lower surface of the valve plate 8 is fixed with a wear-resistant waterproof rubber pad 11, and through the arrangement, the non-return effect can be further improved while the valve plate wear is reduced and the service life of the valve plate is prolonged;

according to the drawings shown in fig. 1-2, as a preferred technical solution of the present invention: the outside face symmetry of connecting pipe 601 is connected with supplementary handle 603, through setting up like this, makes things convenient for the staff to rotate filtering auxiliary mechanism.

The working principle of the embodiment is as follows: when the check valve with the filtering function is used, as shown in fig. 1-4, the whole device is composed of a check valve main body 1, a valve cover 2, a water inlet pipe 3, a water outlet pipe 4, a filter screen 5, a filtering auxiliary mechanism 6, a lead-in pipe 7, a valve plate 8, a bolt 9, a nut 10 and a wear-resistant waterproof rubber pad 11, water flow entering the check valve main body 1 can be filtered through the filter screen 5, the filtering auxiliary mechanism 6 can be rotated through an auxiliary handle 603 according to actual needs to be separated from the lead-in pipe 7, then the filtering auxiliary mechanism 6 is moved through the matching of a movable pipe 602 and a movable groove 301 to clean filtered impurities, after the cleaning is completed, the filtering auxiliary mechanism 6 is rotated, the filtering auxiliary mechanism 6 and the lead-in pipe 7 are connected through the matching of an internal thread 6011 and an external thread 701, so that the whole device works, and those not described in detail in this specification are well within the skill of those in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it should be noted that, in the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, may be fixedly connected or detachably connected; or indirectly through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations; it will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.

Claims (3)

1. The check valve with the filtering function comprises a check valve main body (1), a bolt (9) and a nut (10), and is characterized in that a valve cover (2) is arranged at the top of the check valve main body (1), a water inlet pipe (3) is connected to a position, close to the bottom, of one side of the check valve main body (1), a water outlet pipe (4) is connected to a position, close to the top, of the other side of the check valve main body (1), a filter screen (5) is arranged at a position, close to one end, of the inner wall of the water inlet pipe (3), a filtering auxiliary mechanism (6) is arranged at one end of the water inlet pipe (3), and a lead-in pipe (7) is arranged at one end of the filtering auxiliary mechanism (6);

the check valve main body (1) comprises a valve body (101), and the top of the valve body (101) is fixedly connected with a flange plate (102);

the valve cover (2) comprises a cover body (201), a lifting pipe (202) is connected to the center of the top of the cover body (201), a valve plate (8) is movably connected to the lower portion of the lifting pipe (202), and the cover body (201) and the flange plate (102) are fixed through bolts (9) and nuts (10);

a movable groove (301) is formed in the end face of the water inlet pipe (3), the auxiliary filtering mechanism (6) comprises a connecting pipe (601), a movable pipe (602) is fixedly connected to one end face of the connecting pipe (601), an internal thread (6011) is formed in the inner wall of the connecting pipe (601), and the movable pipe (602) is movably connected with the movable groove (301);

and an external thread (701) matched with the internal thread (6011) is arranged on the outer surface of the introducing pipe (7) close to one end face.

2. The non-return valve with filtering function according to claim 1, characterized in that a wear-resistant waterproof rubber pad (11) is fixed to the lower surface of the valve plate (8).

3. The check valve with filtering function according to claim 1, wherein an auxiliary handle (603) is symmetrically connected to an outer side of the connection pipe (601).

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