CN218954116U - Check valve for water conservancy pipeline - Google Patents

Abstract

The utility model discloses a water conservancy pipeline check valve, in particular to the field of check valves, which comprises a valve body, wherein two ends of the valve body are respectively communicated with a first pipeline and a second pipeline along the water flow direction, and two groups of flange ports are welded at two ends of the valve body.

Description

Check valve for water conservancy pipeline

Technical Field

The utility model relates to the technical field of check valves, in particular to a water conservancy pipeline check valve.

Background

The check valve is a valve with a circular valve clack as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure. Belongs to automatic valves, which are also called check valves, one-way valves, reflux valves or isolation valves; the valve clack movement mode is divided into two modes of lifting type and swing type; medium flows in from the inlet end and flows out from the outlet end; when the inlet pressure is greater than the sum of the weight of the valve clack and the flow resistance thereof, the valve is opened; otherwise, the valve is closed when the medium flows backwards; check valves are commonly used as bottom valves for pumping devices to prevent backflow of water.

The Chinese patent publication CN206754490U discloses a check valve, which comprises a valve body, wherein the valve body is fixedly connected with a first pipeline and a second pipeline, a fixed shaft is penetrated through the valve body, a valve rod is sleeved on the fixed shaft, the valve rod is fixedly connected with a valve clack for sealing the first pipeline, the diameter of the valve clack is larger than that of the first pipeline, the valve body is fixedly connected with a limiting plate, the limiting plate is provided with a first through groove, and when the valve clack rotates around the fixed shaft, the valve rod is positioned in the first through groove. When the first pipeline is fed with water, the water flow impacts the valve clack to drive the valve rod to rotate around the fixed shaft. Because the valve rod is positioned in the first through groove, the rotating track of the valve rod is limited by the groove wall of the first through groove. At this point the valve flap forms a gap with the first conduit and water flows from the first conduit through the valve body to the second conduit. But current check valve adopts the direct-connected type to install on water pipeline, is applicable to the pipeline of the water of processing, and in irrigation process, the natural water source is mostly directly taken to the water, contains a large amount of impurity in the water, and current check valve lacks filtration, very easily causes the valve body pipeline to block up.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present utility model provides a check valve for a water conservancy pipeline, wherein a sieving assembly is disposed between a first pipeline and a valve body, an annular sieving plate is used for filtering impurity dust and the like in a water flow flowing in a directional manner, and meanwhile, an inner wall of a garbage transfer plate is protruded towards a horizontal center line direction of an annular sieving plate, so that a recess exists at a connection position of the garbage transfer plate and the annular sieving plate, wherein when the annular sieving plate filters dust in flowing water, and further adheres to a surface of a filter screen of the annular sieving plate, after water inflow is stopped, the impurity dust enters into the recess which falls into the connection position of the garbage transfer plate and the annular sieving plate due to self gravity, and the sieving assembly is used for sieving dust impurities and also serves as a receiving box for the dust impurities, so as to solve the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a water conservancy pipeline check valve, includes the valve body, the both ends of valve body have first pipeline and second pipeline in the water flow direction intercommunication respectively, two sets of flange ports have been welded at the both ends of valve body, the second pipeline has all been welded flange towards the valve body, the one end of first pipeline towards the valve body, and the inside cartridge multiunit fixed positioning assembly of flange port, be provided with the subassembly that sieves between first pipeline and the valve body, the lateral wall of subassembly that sieves is laminated mutually with flange and flange port respectively;

the screening assembly comprises an annular screening plate, a group of garbage transfer plates are fixedly connected to the side wall of the annular screening plate, and the inner wall of each garbage transfer plate protrudes towards the horizontal center line direction of the annular screening plate.

In a preferred embodiment, the fixed positioning assembly comprises an end fitting plate attached to the surface of the flange port, a group of central inserting rods are inserted into the end fitting plate along the horizontal axis direction of the valve body, one end of each central inserting rod penetrates through the flange port, the sieving assembly and the connecting flange, an arc-shaped connecting plate is attached to the surface of the other end of the fixed positioning assembly, and two groups of positioning rods are fixedly connected to one surface of the arc-shaped connecting plate, facing the end fitting plate.

In a preferred embodiment, the arc-shaped connecting plate penetrates through the flange port, the sieving assembly and one end of the connecting flange to be inserted with a stepped plate, and a plurality of groups of horizontal cross bars are fixedly connected between the stepped plate and the arc-shaped connecting plate.

In a preferred embodiment, two groups of through holes penetrate through the interior of the end fitting plate, and the apertures of the two groups of through holes are consistent with the outer diameter dimension of the positioning rod.

In a preferred embodiment, a half sinking groove is formed in one surface of the arc-shaped connecting plate, which faces the step plate, and one end of the center inserted rod is inserted into the half sinking groove.

The utility model has the technical effects and advantages that:

1. according to the utility model, the screening assembly is arranged between the first pipeline and the valve body, the annular screening plate is used for filtering impurity dust and the like in the directionally flowing water flow, meanwhile, the inner wall of the garbage transfer plate is protruded towards the horizontal central line direction of the annular screening plate, so that a pit exists at the connecting position of the garbage transfer plate and the annular screening plate, when the annular screening plate filters the dust in the flowing water and is adhered to the surface of the filter screen of the annular screening plate, after water inflow is stopped, the impurity dust enters the pit connected with the annular screening plate due to the self gravity effect, and the screening assembly is used for screening dust impurities and also used as a receiving box for the dust impurities;

2. the utility model realizes the fixed communication between the second pipeline and the valve body as well as between the valve body and the first pipeline through the simple stretching and fixing positioning assembly, the installation is quick and the steps are simple, and meanwhile, the fixing positioning assembly is also used for positioning the position for installing the sieving assembly, and simultaneously, the relative rotation between the connecting flange and the sieving assembly as well as between the sieving assembly and the flange port can be prevented.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the water conservancy pipeline check valve of the present utility model.

Fig. 2 is a partial view of the overall structure of the hydraulic pipeline check valve of the present utility model.

Fig. 3 is a schematic view of the overall structure of the fixing and positioning assembly of the present utility model.

Fig. 4 is a schematic view of the overall structure of the screen assembly of the present utility model.

The reference numerals are: 1. a second pipe; 2. a connecting flange; 3. a flange port; 4. a valve body; 5. fixing the positioning assembly; 501. an arc-shaped connecting plate; 502. a step plate; 503. a horizontal cross bar; 504. a head attaching plate; 505. a central plunger; 506. a positioning rod; 507. a column; 6. a sieving assembly; 601. annular screening plates; 602. positioning holes; 603. a garbage transfer plate; 7. a first conduit.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: as shown in fig. 1-4, a water conservancy pipeline check valve comprises a valve body 4, wherein two ends of the valve body 4 are respectively communicated with a first pipeline 7 and a second pipeline 1 along the water flow direction, as shown in fig. 1, two groups of flange ports 3 are welded at two ends of the valve body 4, a connecting flange 2 is welded at one end, facing the valve body 4, of the second pipeline 1 and the first pipeline 7, facing the valve body 4, of the connecting flange 2 and a plurality of groups of fixed positioning components 5 are inserted in the connecting flange 2 and the flange ports 3, a sieving component 6 is arranged between the first pipeline 7 and the valve body 4, and the side wall of the sieving component 6 is respectively attached to the connecting flange 2 and the flange ports 3;

the screening assembly 6 comprises an annular screening plate 601, a group of garbage transfer plates 603 are fixedly connected to the side wall of the annular screening plate 601, and the inner walls of the garbage transfer plates 603 are protruded towards the horizontal center line of the annular screening plate 601.

Referring to fig. 1 and 4, in which water flows from the open end of the first pipe 7 into the interior of the second pipe 1 through the valve body 4, wherein the connection flange 2 welded at the pipe opening opposite to the second pipe 1 and the valve body 4 is attached to the flange port 3, the screen assembly 6 is disposed between the connection flange 2 welded at the pipe opening opposite to the first pipe 7 and the valve body 4 and the flange port 3, the annular screen plate 601 is used for filtering impurity dust and the like in the water flow flowing in a directional manner, and at the same time, the inner wall of the garbage transfer plate 603 is protruded inwards, so that there is a recess at the connection position of the garbage transfer plate 603 and the annular screen plate 601, wherein when the annular screen plate 601 filters dust in the flowing water and adheres to the filter screen surface of the annular screen plate 601, after stopping water inflow, the impurity dust enters the recess where the garbage transfer plate 603 is connected to the annular screen plate 601 due to self gravity, and the filtered impurity dust can be synchronously taken out by taking the screen assembly 6 out from between the connection flange 2 and the flange port 3.

As shown in fig. 2, the fixed positioning component 5 includes an end fitting plate 504 attached to the surface of the flange port 3, a set of central inserting rods 505 are inserted in the end fitting plate 504 along the horizontal axis direction of the valve body 4, one end of each central inserting rod 505 penetrates through the flange port 3, the sieving component 6 and the connecting flange 2, an arc-shaped connecting plate 501 is attached to the surface of the other end of the fixed positioning component 5, and two sets of positioning rods 506 are fixedly connected to one surface of the arc-shaped connecting plate 501 facing the end fitting plate 504.

As shown in fig. 2, the arc-shaped connecting plate 501 penetrates through the flange port 3, the sieving assembly 6 and one end of the connecting flange 2 to be inserted with a step plate 502, and a plurality of groups of horizontal cross bars 503 are fixedly connected between the step plate 502 and the arc-shaped connecting plate 501.

As shown in fig. 2, two sets of through holes are formed through the interior of the tip attachment plate 504, and the apertures of the two sets of through holes are consistent with the outer diameter dimension of the positioning rod 506.

As shown in fig. 3, a half sink is formed on a surface of the arc-shaped connection plate 501 facing the stepped plate 502, and one end of the center insert rod 505 is inserted into the half sink.

The specific operation is as follows, referring to fig. 2 and 3, the end fitting plate 504 is attached to the pipe of the valve body 4, so that two sets of upright posts 507 are inserted into the flange port 3, and then the central inserting rod 505 is inserted into the flange port 3 along the horizontal axis direction of the fixed positioning component 5, the surfaces of the flange port 3, the sieving component 6, the connecting flange 2, the stepped plate 502 and the end fitting plate 504 are provided with through grooves matched with the central inserting rod 505, the stepped plate 502 is aligned with the central inserting rod 505 to insert the other end of the central inserting rod 505 into the semi-sinking groove on the surface of the arc connecting rod 501, at this time, the stepped plate 502 and the arc connecting rod 501 are respectively arranged in an attaching state between the first pipe 7 and the valve body 4, and two sets of positioning rods 506 synchronously positioned on the surface of the arc connecting rod 501 are inserted into the interiors of the two sets of end fitting plates 504 of the end fitting plate 504, so as to fix, wherein the rod bodies of the horizontal cross rods 503 are elastic telescopic rods, and the elastic rods, the elastic rods generated by stretching the horizontal cross rods 503 promote tight connection between the connecting flange 2, the connecting flange 6 and the flange port 3, the sieving component 6 and the flange port 3, and the central inserting rod 505 can prevent the sieving component 2 and the flange 6 from rotating relatively.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the utility model, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present utility model.

Claims (5)

1. The utility model provides a water conservancy pipeline check valve, includes valve body (4), the both ends of valve body (4) have first pipeline (7) and second pipeline (1) along the rivers direction intercommunication respectively, its characterized in that: two groups of flange ports (3) are welded at two ends of the valve body (4), a connecting flange (2) is welded at one end of the second pipeline (1) facing the valve body (4) and one end of the first pipeline (7) facing the valve body (4), a plurality of groups of fixed positioning assemblies (5) are inserted into the connecting flange (2) and the flange ports (3), a sieving assembly (6) is arranged between the first pipeline (7) and the valve body (4), and the side walls of the sieving assembly (6) are respectively attached to the connecting flange (2) and the flange ports (3);

the screening assembly (6) comprises an annular screening plate (601), a group of garbage transfer plates (603) are fixedly connected to the side wall of the annular screening plate (601), and the inner wall of each garbage transfer plate (603) protrudes towards the horizontal center line of the annular screening plate (601).

2. A water conservancy pipeline check valve according to claim 1, wherein: the fixed positioning assembly (5) comprises an end attachment plate (504) attached to the surface of the flange port (3), a group of central inserting rods (505) are inserted into the end attachment plate (504) along the horizontal axis direction of the valve body (4), one end of each central inserting rod (505) penetrates through the flange port (3), the sieving assembly (6) and the connecting flange (2), an arc-shaped connecting plate (501) is attached to the surface of the other end of the fixed positioning assembly (5), and two groups of positioning rods (506) are fixedly connected to the arc-shaped connecting plate (501) towards one surface of the end attachment plate (504).

3. A water conservancy pipeline check valve according to claim 2, wherein: the arc-shaped connecting plate (501) penetrates through the flange port (3), the screening assembly (6) and one end of the connecting flange (2) to be inserted with the step plate (502), and a plurality of groups of horizontal cross bars (503) are fixedly connected between the step plate (502) and the arc-shaped connecting plate (501).

4. A water conservancy pipeline check valve according to claim 3, wherein: two groups of through holes penetrate through the inside of the end head bonding plate (504), and the apertures of the two groups of through holes are consistent with the outer diameter size of the positioning rod (506).

5. The hydraulic conduit check valve of claim 4, wherein: the arc-shaped connecting plate (501) is provided with a half sinking groove towards one surface of the stepped plate (502), and one end of the center inserted rod (505) is inserted into the half sinking groove.

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