Check valve with filtering mechanism

Abstract

The check valve with the filtering mechanism comprises a valve body, flange plates are fixedly arranged on the left side and the right side of the valve body in a sleeved mode, four flange holes are formed in each flange plate, an installation ring is arranged on the side, away from the valve body, of each flange plate, a filtering net is fixedly connected to the inner side of each installation ring, and the filtering mechanism is fixedly connected with the filtering net. According to the check valve with the filtering mechanism, in the using process, before the valve body is connected with a connecting pipeline through a flange plate, an installation ring is moved, a limiting cylinder is moved to be inserted into an inner cavity of a corresponding flange hole, then the flange plate on the connecting pipeline is attached to a first sealing ring, and then fixing is conducted through an external screw; compared with the prior art, the device has the advantages that the mounting operation of the filter screen is simple, screw holes do not need to be punched in the valve body, and the influence on the service life of the valve body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a check valve provided with a filtering mechanism. Background Art

[0002] A stop check valve is a valve in which the closing member moves along the center line of the valve seat to prevent the backflow of the medium. However, the existing marine external thread high-pressure stop check valve has disadvantages during use. It does not have the function of filtering debris, and there is a problem that debris enters the inside of the stop check valve and damages the valve. At the same time, it does not have the function of locking the rotating disk of the valve. There is a situation where the rotating disk rotates or accidentally touches, resulting in a poor valve closing effect, affecting the use of the valve. For this reason, we propose a marine external thread high-pressure stop check valve.

[0003] The existing Chinese patent CN215110701U discloses a marine external thread high-pressure stop check valve, comprising a valve body, a support frame is provided at the upper end of the valve body, a rotating disk is provided at the upper end of the support frame, a threaded valve stem is provided between the rotating disk and the valve body, a water outlet is provided on the left side of the valve body, a water inlet is provided at the right end of the valve body, a groove is provided inside the port of the water inlet, an internal threaded hole is provided on the internal surface of the groove, a connecting disk is provided in the groove, a filter screen is provided in the middle of the surface of the connecting disk, and through holes are provided on the surface of the connecting disk around the filter screen, and screws are provided in the through holes. The marine external thread high-pressure stop check valve described in the utility model has a good debris filtering effect, preventing debris from entering the valve body and damaging the valve, and at the same time has a good valve rotating disk locking effect, preventing rotation and accidental collision, which affect the use of the valve.

[0004] In actual use, the installation of the filter screen and the connecting plate of the above-mentioned patent requires internal threaded holes to be drilled on both sides of the valve, which will undoubtedly affect the rigidity of the valve and greatly reduce the service life of the valve. At the same time, no sealing measures are added between the connecting plate and the groove, and the sealing performance is poor, thereby affecting the normal use of the valve. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, one of the objectives of the utility model is to provide a check valve provided with a filtering mechanism.

[0006] One of the purposes of the utility model is achieved by the following technical solution:

[0007] A check valve with a filtering mechanism comprises a valve body, flanges are fixedly sleeved on both left and right sides of the valve body, four flange holes are opened on the flange, a mounting ring is provided on the side of the flange away from the valve body, a filter screen is fixedly connected to the inner side of the mounting ring, four connecting rods are fixedly connected to the outer edge of the mounting ring, a limiting cylinder is fixedly connected to the side of the connecting rod away from the mounting ring, the limiting cylinder is movably inserted in the inner cavity of the adjacent flange hole, and a first sealing ring and a second sealing ring are respectively bonded to both sides of the mounting ring.

[0008] Furthermore, a fixing seat is fixedly connected to the top of the valve body, a sealing ring is connected to the top of the fixing seat, a valve stem is inserted into the top of the fixing seat, and a rocker is fixedly connected to the top of the valve stem.

[0009] Furthermore, the second sealing ring is respectively fitted with the mounting ring and the valve body.

[0010] Furthermore, the thickness of the connecting rod is smaller than the thickness of the mounting ring, and the side of the limiting cylinder away from the valve body is flush with the side wall of the connecting rod.

[0011] Furthermore, the four limiting cylinders are arranged in a rectangular array, and the limiting cylinders and the flange holes match each other.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model is a check valve with a filtering mechanism. During use, before the valve body is connected to the connecting pipe through the flange, the installation ring is first moved to move the limiting cylinder to be inserted into the corresponding flange hole cavity, and then the flange on the connecting pipe is fitted with the first sealing ring, and then fixed by an external screw. At this time, the screw passes through the limiting cylinder to complete the installation of the filter screen, and the installation of the external pipe is also completed. Compared with the prior art, the installation operation of the filter screen of the device is simple, and there is no need to drill screw holes on the valve body, which avoids affecting the service life of the valve body;

[0014] 2. The utility model is a check valve with a filtering mechanism. During use, the sealing rings between the mounting ring and the valve body and the external pipe are secured by the arrangement of the first sealing ring and the second sealing ring, thereby ensuring the normal use of the valve.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 This is an exploded view of the utility model;

[0018] Figure 3 It is an exploded view of the mounting ring, the first sealing ring and the second sealing ring of the utility model.

[0019] Numbers in the figure: 1, valve body; 2, fixed seat; 3, sealing ring; 4, valve stem; 5, rocker; 6, flange; 7, flange hole; 8, mounting ring; 9, first sealing ring; 10, second sealing ring; 11, connecting rod; 12, limiting cylinder; 13, filter screen. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0021] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] See also Figure 1-3The utility model provides a technical solution: a check valve with a filtering mechanism, comprising a valve body 1, a fixed seat 2 is fixedly connected to the top of the valve body 1, a sealing ring 3 is connected to the top of the fixed seat 2, a valve stem 4 is inserted on the top of the fixed seat 2, a rocker 5 is fixedly connected to the top of the valve stem 4, a flange 6 is fixedly sleeved on both sides of the valve body 1, four flange holes 7 are opened on the flange 6, a mounting ring 8 is provided on the side of the flange 6 away from the valve body 1, a filter screen 13 is fixedly connected to the inner side of the mounting ring 8, and four flange holes 7 are fixedly connected to the outer edge of the mounting ring 8. A connecting rod 11, the side of the connecting rod 11 away from the mounting ring 8 is fixedly connected to a limiting cylinder 12, the limiting cylinder 12 is movably inserted in the inner cavity of the adjacent flange hole 7, the thickness of the connecting rod 11 is less than the thickness of the mounting ring 8, the side of the limiting cylinder 12 away from the valve body 1 is flush with the side wall of the connecting rod 11, the four limiting cylinders 12 are arranged in a rectangular array, the limiting cylinders 12 and the flange hole 7 match each other, the first sealing ring 9 and the second sealing ring 10 are respectively bonded on both sides of the mounting ring 8, the second sealing ring 10 is respectively in contact with the mounting ring 8 and the valve body 1.

[0024] Working principle: During use, before the valve body 1 is connected to the connecting pipe through the flange 6, the installation ring 8 is moved first, and the installation ring 8 drives the connecting rod 11 and the limiting cylinder 12 to move, and the installation ring 8 is moved to one side of the valve body 1, and then the limiting cylinder 12 is made to correspond to the adjacent flange holes 7 respectively, and then the installation ring 8 is moved horizontally, and the installation ring 8 drives the connecting rod 11 and the limiting cylinder 12 to move to be inserted in the corresponding flange hole 7 cavity, and then the flange on the connecting pipe is fitted with the first sealing ring 9, and then fixed by the external screw. At this time, the screw passes through the limiting cylinder 12, thereby completing the installation of the filter screen 13, and also completing the installation of the external pipe. The valve body 1 is closed and opened by rotating the rocker 5. Compared with the prior art, the installation operation of the filter screen 13 of the device is simple, and there is no need to drill screw holes on the valve body 1 to avoid affecting the service life of the valve body 1. Through the setting of the first sealing ring 9 and the second sealing ring 10, the sealing ring between the installation ring 8 and the valve body 1 and the external pipe is guaranteed, thereby ensuring the normal use of the valve.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0030] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A check valve with a filtering mechanism, comprising a valve body, characterized in that: Flanges are fixedly sleeved on the left and right sides of the valve body, four flange holes are opened on the flange, a mounting ring is provided on the side of the flange away from the valve body, a filter screen is fixedly connected to the inner side of the mounting ring, four connecting rods are fixedly connected to the outer edge of the mounting ring, a limiting cylinder is fixedly connected to the side of the connecting rod away from the mounting ring, the limiting cylinder is movably inserted in the inner cavity of the adjacent flange hole, and a first sealing ring and a second sealing ring are respectively bonded on both sides of the mounting ring.

2. A check valve with a filtering mechanism as claimed in claim 1, characterized in that: The top of the valve body is fixedly connected with a fixing seat, the top of the fixing seat is connected with a sealing ring, the top of the fixing seat is plugged with a valve stem, and the top of the valve stem is fixedly connected with a rocker.

3. A check valve with a filtering mechanism as claimed in claim 1, characterized in that: The second sealing ring is respectively fitted with the mounting ring and the valve body.

4. A check valve with a filtering mechanism as claimed in claim 1, characterized in that: The thickness of the connecting rod is smaller than the thickness of the mounting ring, and the side of the limiting cylinder away from the valve body is flush with the side wall of the connecting rod.

5. A check valve with a filtering mechanism as claimed in claim 1, characterized in that: The four limiting cylinders are arranged in a rectangular array, and the limiting cylinders and the flange holes match each other.

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