CN218377965U - Check valve - Google Patents

Abstract

The utility model provides a check valve belongs to the valve field. It has solved the current not long and not good problem of filter effect of check valve life. This check valve, including the check valve main part, be provided with the end of intaking and the play water end that is connected with corresponding pipe fitting along the axial direction in the check valve main part, it is provided with filtering component to be located check valve main part department of intaking, be provided with non return subassembly in the check valve main part, non return subassembly is by the case, the connecting piece, the valve clack and constitute with connecting portion, it installs first magnetism ring to be located to inlay on the valve clack, inlay on the connecting piece and install the second magnetism ring that repels with first magnetism ring, valve clack swing joint is on the case, be provided with seal structure between valve clack and the check valve main part inner wall. The utility model has the advantages of high sealing, high strength, high efficiency and good filtering effect.

Description

Check valve

Technical Field

The utility model belongs to the valve field relates to a valve, in particular to check valve.

Background

The check valve is a valve whose opening and closing member is a circular valve flap and can be actuated by self-weight and medium pressure to block back flow of medium, belonging to the field of automatic valve, also called check valve, one-way valve, backflow valve or isolating valve, and its valve flap movement mode can be divided into lifting type and swing type, the lifting type check valve is similar to the structure of stop valve, and only lacks valve rod for driving valve flap, the medium can be flowed in from inlet end (lower side) and flowed out from outlet end (upper side), when the inlet pressure is greater than the sum of valve flap weight and its flow resistance, the valve can be opened, otherwise, when the medium is back flow, the valve can be closed, and the swing type check valve has a valve flap which is obliquely placed and can be rotated around shaft, and its working principle is similar to that of lifting type check valve, and the check valve can be used as bottom valve of water-pumping device, and can block back flow of water. The check valve and the stop valve are used in combination, so that the safety isolation effect can be achieved, and the defects that the resistance is large and the sealing performance is poor when the valve is closed are overcome.

But current check valve utilizes spring elasticity to restore to the throne its valve clack usually and seals up and realize preventing the phenomenon of circulation countercurrent, under the check valve long-term working condition, the spring elasticity number of times that resets leads to elasticity not enough, can't effectively prevent the phenomenon of fluid countercurrent, and the spring belongs to elastic metal, impurity in the fluid divide into metallic impurity and non-metallic impurity usually, metallic impurity gets into in the valve body and depends on the spring and on the internals, metallic impurity deposits in the valve body for a long time and leads to spring and partial spare part to damage.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a high efficiency filter and adopt the check valve that magnetism resets.

The purpose of the utility model can be realized by the following technical proposal: a check valve comprises a check valve body, wherein a water inlet end and a water outlet end which are connected with corresponding pipe fittings are arranged in the check valve body along the axial direction, and the check valve is characterized in that a filtering component used for filtering impurities in fluid is arranged at the water inlet end of the check valve body;

the filter assembly comprises a magnetic filter framework, a filter screen and a connecting framework, wherein the magnetic filter framework is arranged in a hollow cylinder net structure, the filter screen is positioned at one end of the magnetic filter framework and used for filtering fluid impurities, the connecting framework is used for fixing the filter screen and is connected with the valve core, and the connecting framework is connected with the valve core through a clamping structure.

In the check valve, one end of the valve core is fixedly connected to the connecting piece, and the other end of the valve core is connected to the connecting part and penetrates out of the connecting part.

In the above check valve, the sealing structure is composed of a third magnetic ring arranged in the water inlet end of the check valve body and attracted with the first magnetic ring, and a sealing washer which is arranged between the third magnetic ring and the valve flap and used for buffering the reset impact force of the valve flap and strengthening sealing, and the valve flap is provided with a limit step matched with the third magnetic ring for limiting.

In the check valve, the inner peripheral wall of the check valve body is provided with a flaring portion which is used for embedding and limiting the third magnetic ring and the sealing washer and is arranged in a flaring structure.

In the check valve, the connecting part and the connecting part are provided with a plurality of water passing holes for fluid to flow through, and the connecting part is in fit connection with the inner peripheral wall of the water outlet port of the check valve main body through inner and outer threads.

In the check valve, one end of the magnetic filtering framework is provided with a fixing piece which is convenient to detach and used for fixing the magnetic filtering framework.

Compared with the prior art, the check valve has the following advantages:

1. the check valve is provided with the sealing structure which adopts magnetic closed type sealing, the valve clack is reset and sealed by the repulsion of the first magnetic ring and the second magnetic ring, the first magnetic ring and the third magnetic ring are attracted, and the sealing gasket is arranged between the first magnetic ring and the third magnetic ring, so that the traditional spring reset structure is changed, the sealing effect and the sealing strength are improved, the backflow of fluid is effectively prevented, and the service life of the fluid is prolonged;

2. this check valve is provided with and can dismantle filtering component, and this filtering component is filtered skeleton, filter screen and connection skeleton by the magnetism that cavity drum network structure set up and is constituteed, and this structural design can effectively advance to filter with non-metallic impurity to metallic impurity in the fluid, prevents that metallic impurity from getting into the inside spare part that leads to of valve body and damaging to the periodic cleaning of being convenient for has improved the filter effect and has increased the practicality.

Drawings

Fig. 1 is a schematic view of a half-section structure of the check valve.

Fig. 2 is a schematic view of a part a of the enlarged structure in fig. 1.

In the drawings, 1, a check valve body; 2. a water inlet end; 3. a water outlet end; 4. a valve core; 5. a connecting member; 6. a connecting portion; 7. a valve flap; 8. a first magnetic ring; 9. a second magnetic ring; 10. a third magnetic ring; 11. a magnetic filtration framework; 12. a filter screen; 13. connecting the framework; 14. a sealing gasket; 15. a limiting step; 16. a flared part; 17. and a fixing member.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the check valve comprises a check valve body 1, wherein a water inlet end 2 and a water outlet end 3 connected with corresponding pipe fittings are arranged in the check valve body 1 along an axial direction, and is characterized in that a filtering component for filtering impurities in fluid is arranged at the water inlet end 2 of the check valve body 1, a check component for preventing the backflow of the fluid is arranged in the check valve body 1, the check component comprises a valve core 4, a connecting piece 5 which is arranged at one end of the valve core 4 and connected with the inner peripheral wall of the water outlet end 3 of the check valve, a valve flap 7 which is sleeved on the valve core 4 and used for preventing the backflow of the fluid, and a connecting part 6 which is integrally formed with the water inlet end 2 of the check valve body 1 and used for connecting the valve core 4, a first magnetic ring 8 is embedded on the valve flap 7, a second magnetic ring 9 which is repelled from the first magnetic ring 8 is embedded on the connecting piece 5, the valve flap 7 is movably connected on the valve core 4, a sealing structure for enhancing the sealing performance is arranged between the valve flap 7 and the inner wall of the check valve body 1, one end of the valve core 4 is fixedly connected on the connecting piece 5, and the other end of the connecting part is connected on the connecting part 6 and penetrates out;

the filtering component comprises a magnetic filtering framework 11 which is arranged in a hollow cylinder net structure, a filtering net 12 which is arranged at one end of the magnetic filtering framework 11 and used for filtering fluid impurities, and a connecting framework 13 which is used for fixing the filtering net 12 and is connected with the valve core 4, wherein the connecting framework 13 is connected with the valve core 4 in a clamping structure mode.

Principle of operation

The check valve changes the traditional spring reset structure, the improvement is that the valve clack 7 is reset by adopting a magnetic closed structure, the reset is realized by the repulsion of a first magnetic ring 8 and a second magnetic ring 9, and the magnetic closed sealing is realized by the attraction of the first magnetic ring 8 and a third magnetic ring 10, when the flow rate of a fluid medium is greater than the repulsion magnetic force and the attraction magnetic force, the valve clack 7 is pushed, the fluid medium enters the valve body, when the flow rate of the fluid at the water inlet end 2 is less than the repulsion magnetic force and the attraction magnetic force, the valve clack 7 is reset and realizes the fluid backflow by the attraction of the first magnetic ring 8 and the third magnetic ring 10, and a sealing structure is arranged, the sealing effect and the sealing strength are improved by the repulsion of the first magnetic ring 8 and the second magnetic ring 9, a sealing gasket 14 is arranged between the first magnetic ring 8 and the third magnetic ring 10, the traditional spring reset structure is changed, the sealing effect and the sealing strength are improved, the service life of the fluid is effectively prevented from backflow, a detachable filtering component is also arranged, the filtering component is composed of a magnetic filtering framework 11, the filtering framework 12 and a connecting framework 13, the filtering component can effectively prevent the impurities from entering the metallic impurity and the filtering components, and the filtering effect of the non-metallic impurities in the filtering component is improved, and the filtering effect of the filtering component is improved, and the filtering component is convenient for removing the non-metallic impurity removing, and the non-metallic impurity filtering effect of the non-metallic impurity.

In more detail, the sealing structure is composed of a third magnetic ring 10 which is arranged in the water inlet end 2 of the check valve main body 1 and is attracted with the first magnetic ring 8, and a sealing washer 14 which is arranged between the third magnetic ring 10 and the valve clack 7 and is used for buffering the reset impact force of the valve clack 7 and strengthening sealing, and the valve clack 7 is provided with a limit step 15 which is matched with the third magnetic ring 10 for limiting.

In more detail, a flared portion 16 for embedding and limiting the third magnetic ring 10 and the sealing washer 14 and having a flared structure is disposed on the inner circumferential wall of the check valve body 1.

In detail, the connecting part 6 and the connecting part 5 are provided with a plurality of water holes for the fluid to flow through, and the connecting part 5 is connected with the inner peripheral wall of the water outlet end 3 of the check valve main body 1 through the matching of the internal thread and the external thread.

In further detail, one end of the magnetic filter framework 11 is provided with a fixing member 17 which is convenient to detach and used for fixing the magnetic filter framework 11.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the check valve body 1, the water inlet end 2, the water outlet end 3, the valve core 4, the connecting piece 5, the connecting part 6, the valve flap 7, the first magnetic ring 8, the second magnetic ring 9, the third magnetic ring 10, the magnetic filtering framework 11, the filtering net 12, the connecting framework 13, the sealing washer 14, the limiting step 15, the flared part 16, the fixing part 17, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (6)

1. A check valve comprises a check valve main body (1), wherein a water inlet end (2) and a water outlet end (3) which are connected with corresponding pipe fittings are arranged in the check valve main body (1) along the axial direction, and is characterized in that a filtering component for filtering impurities in fluid is arranged at the water inlet end (2) of the check valve main body (1), a check component for preventing the backflow of the fluid is arranged in the check valve main body (1), the check component comprises a valve core (4), a connecting piece (5) which is arranged at one end of the valve core (4) and is connected with the inner peripheral wall of the water outlet end (3) of the check valve, a valve clack (7) which is sleeved on the valve core (4) and is used for preventing the backflow of the fluid, and a connecting part (6) which is integrally formed with the water inlet end (2) of the check valve main body (1) and is used for connecting the valve core (4), a first magnetic ring (8) is embedded in the valve clack (7), a second magnetic ring (9) which is repellent to the first magnetic ring (8) is arranged on the connecting piece (5), the valve clack (7) is movably connected to the valve core (4), and a sealing structure for enhancing the sealing performance is arranged between the valve clack (7) and the inner wall of the check valve main body (1);

the filter assembly comprises a magnetic filter framework (11) which is of a hollow cylinder net structure, a filter screen (12) which is located at one end of the magnetic filter framework (11) and used for filtering fluid impurities, and a connecting framework (13) which is used for fixing the filter screen (12) and is connected with the valve core (4), wherein the connecting framework (13) is connected with the valve core (4) in a clamping structure mode.

2. A check valve according to claim 1, characterized in that the spool (4) is fixedly connected at one end to the connecting piece (5) and at the other end to the connecting piece (6) and passes out.

3. The check valve as claimed in claim 1, wherein the sealing structure comprises a third magnetic ring (10) disposed in the water inlet end (2) of the check valve body (1) and attracted to the first magnetic ring (8), and a sealing washer (14) disposed between the third magnetic ring (10) and the valve flap (7) for buffering the impact force of the valve flap (7) and enhancing the sealing, and the valve flap (7) is provided with a limit step (15) for cooperating with the third magnetic ring (10) for limiting.

4. A check valve as claimed in claim 3, characterized in that the inner peripheral wall of the check valve body (1) has a flared portion (16) for engaging and retaining the third magnetic ring (10) and the sealing washer (14) and arranged in a flared configuration.

5. The check valve as claimed in claim 1, wherein the connecting part (6) and the connecting part (5) each have a plurality of water through holes for fluid to flow through, and the connecting part (5) is connected with the inner peripheral wall of the outlet end (3) of the check valve body (1) by internal and external screw threads.

6. A check valve according to claim 1, characterized in that one end of the magnetic filtering frame (11) is provided with a fixing member (17) for fixing the magnetic filtering frame (11) and facilitating disassembly.

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