Drip-proof check valve

Abstract

The utility model belongs to the technical field of check valves, and discloses a drip-proof check valve which comprises a check valve body, flanges are installed on the two sides of the check valve body respectively, an annular installation base is installed on the peripheral sides of the flanges, an annular sliding groove is formed in the inner side of the annular installation base, and a pair of semi-annular sliding blocks are symmetrically installed on the two sides of the annular sliding groove. First sealing gaskets are installed on the opposite sides of the pair of semi-annular sliding blocks, and a plurality of first compression springs are installed on the opposite sides of the pair of semi-annular sliding blocks. According to the check valve, the sealing effect of the joint of the check valve body and a water pipe can be improved, dripped liquid is recycled and an alarm is given out when liquid drips, meanwhile, large-particle impurities in the liquid can be blocked through the filter screen, the situation that the large-particle impurities enter the check valve to cause that the valve clack cannot be closed is prevented, and the sealing effect of the check valve is improved. Therefore, the use effect of the check valve is improved, the service life of the check valve is prolonged, liquid waste is reduced, and production risks caused by liquid leakage are prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, and more specifically, particularly relates to an anti-drip check valve. Background Art

[0002] A check valve is a valve that has a circular disc as the opening and closing part and blocks the backflow of the medium by its own weight and the pressure of the medium. It is an automatic valve and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The disc movement mode is divided into lifting type and swing type. The check valve is often used as a bottom valve of a pumping device to prevent the backflow of water. The check valve is used in combination with a stop valve to achieve a safe isolation effect.

[0003] When the check valve is in use, debris in the liquid entering the valve body will block the automatic closing of the valve disc, affecting the self-closing effect of the check valve and causing leakage. In addition, when the connection between the check valve and the water pipe is used for a long time, it is easy for the connection to loosen due to the impact of water pressure, resulting in dripping and causing waste. If the liquid in the water pipe is harmful, it will also cause environmental pollution and increase production risks.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a drip-proof check valve is provided to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an anti-drip check valve, which is achieved by the following specific technical means:

[0006] A drip-proof check valve comprises a check valve body, flanges are installed on both sides of the check valve body, an annular mounting seat is installed on the circumference of the flange, an annular slide groove is provided on the inner side of the annular mounting seat, a pair of semi-annular sliders are symmetrically installed on both sides of the annular slide groove, a pair of semi-annular sliders are installed with a first sealing gasket on the opposite side, a pair of semi-annular sliders are installed with a plurality of first compression springs on the opposite side, and the other end of the first compression spring is connected to one side of the annular slide groove, a leakage groove is penetrated at the bottom end of the annular slide groove, a pair of second sealing gaskets are symmetrically installed at the edge of the inner side of the annular mounting seat, a collection box is installed on the annular mounting seat at a position directly below the leakage groove, a water level detector is installed on one side of the collection box, and a filter assembly is installed on one side of the check valve body.

[0007] Furthermore, the filter assembly includes an opening, a filter screen and a pair of second slide grooves, the opening is penetrated and opened on one side of the check valve body, the filter screen is installed on one side of the opening and penetrates the opening, a pair of card slots are symmetrically opened on one side of the filter screen, a pair of second slide grooves are penetrated and opened on one side of the check valve body near the card slots, and a card block is slidably installed in the second slide groove.

[0008] Furthermore, the card block is engaged and connected with the card slot.

[0009] Furthermore, a plurality of second compression springs are installed on the peripheral side of the clamping block, and the other end of the second compression spring is connected to one side of the second sliding groove.

[0010] Furthermore, a pull plate is installed on one side of the filter screen.

[0011] Furthermore, a pull block is installed on one side of the clamping block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The anti-drip check valve in the utility model is convenient for improving the sealing effect of the connection between the check valve body and the water pipe through the coordinated use of the check valve body, flange, annular mounting seat, annular slide groove, semi-annular slider, first sealing gasket, first compression spring, leakage groove, second sealing gasket, collection box and water level detector, and when liquid dripping occurs, the dripping liquid is recovered and an alarm is issued, thereby reducing liquid waste and preventing production risks caused by liquid dripping.

[0014] The anti-drip check valve in the utility model, through the coordinated use of the check valve body, the filter assembly, the second compression spring, the pull plate and the pull block, is convenient for blocking larger particles of impurities in the liquid through the filter screen, preventing large particles of impurities from entering the inside of the check valve and causing the valve disc to be unable to close, thereby improving the use effect of the check valve and extending the service life of the check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model.

[0016] Figure 2 It is a front cross-sectional schematic diagram of a partial structure of the utility model.

[0017] Figure 3 It is a side cross-sectional schematic diagram of a partial structure at the opening position of the utility model.

[0018] Figure 4 It is a front view schematic diagram of the filter screen structure of the utility model.

[0019] Figure 5 The utility model Figure 1 Enlarged schematic diagram of part A.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 1. Check valve body; 2. Flange; 3. Annular mounting seat; 4. Annular slide; 5. Semi-annular slider; 6. First sealing gasket; 7. First compression spring; 8. Leakage groove; 9. Second sealing gasket; 10. Collection box; 11. Water level detector; 12. Opening; 13. Filter; 14. Second slide; 15. Slot; 16. Block; 17. Second compression spring; 18. Pull plate; 19. Pull block. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To Attachment Figure 5 As shown:

[0027] The utility model provides a drip-proof check valve, comprising a check valve body 1, flanges 2 are installed on both sides of the check valve body 1, an annular mounting seat 3 is installed on the circumferential side of the flange 2, an annular slide groove 4 is arranged on the inner side of the annular mounting seat 3, a pair of semi-annular sliders 5 are symmetrically installed on both sides of the annular slide groove 4, a pair of semi-annular sliders 5 are installed with a first sealing gasket 6 on the opposite side, a pair of semi-annular sliders 5 are installed with a plurality of first compression springs 7 on the opposite side, and the other end of the first compression spring 7 is connected to one side of the annular slide groove 4, a leakage groove 8 is penetrated at the bottom end of the annular slide groove 4, a pair of second sealing gaskets 9 are symmetrically installed at the edge of the inner side of the annular mounting seat 3, a collection box 10 is installed on the annular mounting seat 3 at a position directly below the leakage groove 8, a water level detector 11 is installed on one side of the collection box 10, and a filter component is installed on one side of the check valve body 1.

[0028] Among them, the filter assembly includes an opening 12, a filter screen 13 and a pair of second slide grooves 14. The opening 12 is opened through one side of the check valve body 1, and the filter screen 13 is installed on one side of the opening 12 and passes through the opening 12. A pair of card grooves 15 are symmetrically opened on one side of the filter screen 13. A pair of second slide grooves 14 are opened through one side of the check valve body 1 near the card grooves 15. A card block 16 is slidably installed in the second slide groove 14. Impurities in the liquid are filtered through the filter screen 13 to prevent impurities from entering the inside of the check valve and affecting the use effect of the check valve. At the same time, the filter screen 13 can be quickly removed and cleaned.

[0029] The clamping block 16 is connected to the clamping slot 15 by clamping, and the filter screen 13 can be quickly fixed or removed through the clamping between the clamping block 16 and the clamping slot 15.

[0030] A plurality of second compression springs 17 are installed around the block 16 , and the other end of the second compression spring 17 is connected to one side of the second slide slot 14 . Under the rebound effect of the second compression spring 17 , the block 16 can be stuck in the slot 15 .

[0031] A pull plate 18 is installed on one side of the filter screen 13 .

[0032] Among them, a pull block 19 is installed on one side of the block 16. When the filter screen 13 needs to be removed, the pull block 19 is first pulled so that the pull block 19 drives the block 16 to disengage from the slot 15. At this time, the block 16 no longer limits the filter screen 13, and the filter screen 13 can be removed by pulling the pull plate 18.

[0033] Working principle of this embodiment: When installing the check valve, the staff first aligns and installs the flange 2 on the side of the check valve body 1 equipped with the filter screen 13 with the flange 2 of the liquid inlet pipe, so that the first sealing gasket 6 on one side of the pair of semi-annular sliders 5 is close to the connection of the flange 2. At this time, under the action of the rebound of the first compression spring 7, the first sealing gasket 6 is always tightly attached to the connection of the flange 2, thereby improving the sealing of the connection of the flange 2. When the water pressure in the pipeline is large and the pair of semi-annular sliders 5 are lifted up when leakage occurs, the leaked liquid will drip along the annular mounting seat 3 through the leakage groove 8 into the collection box 10. The water level detector 11 detects the liquid in the collection box 10 and issues an alarm to prevent a large amount of liquid from leaking and causing waste of resources and environmental pollution. When the check valve is in use, the filter screen 13 can block and filter large particles of impurities in the liquid, preventing large particles of impurities from entering the inside of the check valve body 1 and affecting the sealing effect of the check valve body 1. When the filter screen 13 needs to be disassembled and replaced, the staff first removes the check valve body 1, and then pulls the pull block 19 so that the pull block 19 drives the block 16 to disengage from the slot 15. At this time, the block 16 no longer limits the filter screen 13. The filter screen 13 can be removed by pulling the pull plate 18. When reinstalling the filter screen 13, the filter screen 13 is passed through the opening 12 and pushed in. Under the action of the rebound of the second compression spring 17, the block 16 enters the slot 15, thereby fixing the filter screen 13 on the side of the check valve body 1 close to the liquid inlet pipe.

[0034] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

Claims

1. A drip-proof check valve, comprising a check valve body (1), characterized in that: The check valve body (1) is provided with flanges (2) on both sides, an annular mounting seat (3) is provided on the circumference of the flange (2), an annular groove (4) is provided on the inner side of the annular mounting seat (3), a pair of semi-annular sliders (5) are symmetrically provided on both sides of the annular groove (4), a first sealing gasket (6) is provided on the opposite sides of the pair of semi-annular sliders (5), a plurality of first compression springs (7) are provided on the opposite sides of the pair of semi-annular sliders (5), and the other end of the first compression spring (7) is connected to one side of the annular groove (4), a leakage groove (8) is provided through the bottom end of the annular groove (4), a pair of second sealing gaskets (9) are symmetrically provided on the inner edge of the annular mounting seat (3), a collection box (10) is provided on the annular mounting seat (3) at a position directly below the leakage groove (8), a water level detector (11) is provided on one side of the collection box (10), and a filter assembly is provided on one side of the check valve body (1).

2. The anti-drip check valve according to claim 1, characterized in that: The filter assembly comprises an opening (12), a filter screen (13) and a pair of second slide grooves (14); the opening (12) is opened through one side of the check valve body (1); the filter screen (13) is installed on one side of the opening (12) and passes through the opening (12); a pair of clamping grooves (15) are symmetrically opened on one side of the filter screen (13); a pair of second slide grooves (14) are opened through one side of the check valve body (1) at positions close to the clamping grooves (15); and a clamping block (16) is slidably installed in the second slide groove (14).

3. The anti-drip check valve according to claim 2, characterized in that: The card block (16) is engaged and connected with the card slot (15).

4. The anti-drip check valve according to claim 2, characterized in that: A plurality of second compression springs (17) are installed on the peripheral side of the clamping block (16), and the other end of the second compression spring (17) is connected to one side of the second sliding groove (14).

5. The anti-drip check valve according to claim 2, characterized in that: A pull plate (18) is installed on one side of the filter screen (13).

6. The anti-drip check valve according to claim 2, characterized in that: A pull block (19) is installed on one side of the clamping block (16).

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