Durable leak-proof check valve

Abstract

The utility model relates to the field of check valves, in particular to a durable leak-proof check valve which comprises a valve body. The butterfly valve is installed in the valve body and used for stopping a medium, an upper cover is installed above the valve body, and a shell is fixedly installed outside the valve body. According to the durable leakage-proof check valve, through the arrangement of the butterfly valve, the groove, the spring, the connecting ring, the sealing ring, the first flange, the sealing groove, the sealing piece, the second flange and the clamping block, leakage can be avoided, and meanwhile the overall sealing performance is improved; the spring in the groove in one side of the butterfly valve is used for extruding the connecting ring and the sealing ring, sealing is conducted in the valve body, and therefore leakage is avoided, meanwhile, the first flange and the second flange are connected, a second flange clamping block is used for extruding the sealing groove in one side of the first flange and an internally-installed sealing piece, and therefore the sealing performance between the first flange and the second flange is enhanced; and the condition of leakage is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to check valve field, concretely relates to a durable anti-leakage check valve. BACKGROUND

[0002] Check valve is the closing piece is circular valve clapper and by self weight and medium pressure produces action to cut off medium backflow a kind of valve. It belongs to automatic valve, also called check valve, one-way valve, backflow valve or isolation valve. Valve clapper movement mode is divided into lift type and swing type. Medium from import end swing check valve has a oblique and can rotate around axle valve clapper, check valve is commonly used as the bottom valve of water pumping device, can prevent the backflow of water.

[0003] Through the retrieval, a utility model check valve with publication number CN220060651U, including: valve cover, valve cover lower end installs check valve device, check valve device includes: flow-through assembly and check assembly, check assembly can be detachably installed in flow-through assembly inside, flow-through assembly upper end can be detachably installed in valve cover lower end, flow-through assembly includes: valve body, first valve clapper and bolt, first valve clapper rear end installs lower valve body. The check valve of the utility model, if gas is from second valve clapper backflow after baffle completes lamination work, can increase the resistance of baffle other side, after the resistance of baffle other side is enhanced, baffle and first valve clapper inside flow port lamination is more closely, after baffle and first valve clapper inside flow port lamination is more closely, effectively prevent the backflow problem of lower valve body inside gas, check assembly installation and disassembly are simple and convenient, reduce its replacement difficulty and use difficulty, to further enhance the practicality and use convenience of entire device.

[0004] The existing check valve, butterfly valve is poor in sealing when closing, prone to leakage, when check valve is connected with pipeline, most are connected by simple flange, and dislocation vibration occurs between two connecting flanges, gap is easily generated, liquid in pipeline is leaked, and the check valve in the above-mentioned comparative example is also simply stopped back by butterfly valve, but lacks certain sealing effect, and is also connected by simple flange.

[0005] Therefore, it is necessary to provide a durable anti-leakage check valve to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a durable anti-leakage check valve, when the medium behind butterfly valve is pushed, the spring in the groove on one side of butterfly valve extrudes connecting ring and sealing ring, and seals in the valve body, so that the leakage is avoided, meanwhile, the first flange is connected with the second flange, the sealing groove on one side of the first flange is extruded by the second flange block and the internal sealing element is installed, so that the sealing between the two is strengthened, and the leakage is avoided, to solve the problems in the above background.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a durable leakproof check valve, including valve body,

[0008] Butterfly valve is installed in the inside of valve body, is used for check medium, the top of valve body is installed with upper cover, the outside fixed mounting of valve body has the casing, the inside movable joint of casing has movable rod, the outside movable joint of movable rod has sleeve rod, butterfly valve is installed in sleeve rod side;

[0009] Sealing ring is installed in butterfly valve side, is used for strengthening seal, the inside of one side of butterfly valve is provided with recess, the inside of recess is provided with spring, the side fixed mounting of spring has connecting ring;

[0010] First flange is installed in both ends of valve body, is used for connecting pipeline, the inside surface of one side of first flange is provided with sealing groove, the inside of sealing groove is provided with sealing element, one side of first flange is installed with second flange, the side fixed mounting of one side of second flange has clamping block;

[0011] Filter assembly is installed in the inside of first flange, is used for filtering impurity.

[0012] Preferably, the spring is recessed in the side of the butterfly valve in the form of a ring array, and the sealing ring is arranged on the side of the connecting ring.

[0013] Preferably, the filter assembly includes a sliding groove, a sliding block, a sleeve, a filter screen, and a bolt. The sliding groove is formed on the inside of the first flange on both upper and lower sides. The sliding block is movably connected to the inside of the sliding groove. The sleeve is fixedly installed on one side of the sliding block. The filter screen is arranged in the inside of the sleeve. Bolts pass through both sides of the sleeve.

[0014] Preferably, the sliding blocks fixedly installed on both upper and lower sides of the sleeve are in sliding connection with the first flange. The outer diameter of the sleeve is consistent with the inner diameter of the first flange.

[0015] Preferably, the clamping block fixedly installed on one side of the second flange is movably connected with the sealing groove formed on one side of the first flange. The sealing element is pressed between the sealing groove and the clamping block.

[0016] Preferably, the limiting columns fixedly installed on one side of the first flange are movably connected with the limiting grooves formed on the inside surface of one side of the second flange.

[0017] In the above technical scheme, the utility model provides the technical effect and advantage:

[0018] 1、Through the setting of the butterfly valve, the groove, the spring, the connecting ring, the sealing ring, the first flange, the sealing groove, the sealing element, the second flange and the clamping block, leakage can be avoided, and the overall sealing performance is improved, when the medium behind the butterfly valve is pushed, the spring in the groove on one side of the butterfly valve is used to extrude the connecting ring and the sealing ring, and the sealing is performed in the valve body, so that the leakage is avoided, meanwhile, the first flange is connected with the second flange, the second flange clamping block extrudes the sealing groove on one side of the first flange and the internal sealing element is installed, so that the sealing performance between the two is strengthened, and the leakage is avoided;

[0019] 2、Through the setting of the first flange and the filter assembly, impurities in the medium can be filtered, and the impurities flowing in the valve body for a long time to cause wear of the valve body is avoided, the filter screen in the sleeve is used to filter the impurities in the conveying medium when the medium is conveyed to the first flange at both ends, and the sleeve is limited and fixed in the first flange at both ends through the sliding block, and is convenient to disassemble, so that the filter assembly can not only filter the impurities in the medium, but also avoid that the impurities enter the valve body for a long time to cause damage and unable to work normally, and the service life is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the internal structure of the valve body of the present application;

[0023] Figure 3 It is a schematic diagram of the butterfly valve structure of the present application;

[0024] Figure 4 It is a schematic diagram of the sealing element structure of the present application;

[0025] Figure 5 It is a schematic diagram of the filter assembly structure of the present application;

[0026] Figure 6 It is a schematic diagram of the second flange structure of the present application.

[0027] Explanation of reference signs:

[0028] 1, valve body; 2, upper cover; 3, shell; 4, movable rod; 5, sleeve rod; 6, butterfly valve; 7, groove; 8, spring; 9, connecting ring; 10, sealing ring; 11, first flange; 12, limiting column; 13, sealing groove; 14, sealing element; 15, filter assembly; 1501, sliding groove; 1502, sliding block; 1503, sleeve; 1504, filter screen; 1505, bolt; 16, second flange; 17, limiting groove; 18, clamping block. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0030] The utility model provides a kind of durable leakproof check valve as Figures 1-6 As shown in the figure, including valve body 1;

[0031] Butterfly valve 6 is installed in valve body 1 inside, for check medium, the upper portion of valve body 1 is equipped with upper cover 2, the outside of valve body 1 is fixedly installed with shell 3, movable rod 4 is movably connected in the inside of shell 3, sleeve rod 5 is movably connected to the outside of movable rod 4, butterfly valve 6 is installed in one side of sleeve rod 5;

[0032] Sealing ring 10 is installed in one side of butterfly valve 6, for strengthening sealing, recess 7 is formed in the inside of one side of butterfly valve 6, spring 8 is arranged in the inside of recess 7, connecting ring 9 is fixedly installed on one side of spring 8;

[0033] First flange 11 is installed in both ends of valve body 1, for connecting pipeline, sealing groove 13 is formed in the inside surface of one side of first flange 11, sealing element 14 is arranged in the inside of sealing groove 13, second flange 16 is installed on one side of first flange 11, clamping block 18 is fixedly installed on one side of second flange 16;

[0034] Filter assembly 15 is installed in the inside of first flange 11, for filtering impurities, when being pushed by the medium behind butterfly valve 6, spring 8 in the inside of recess 7 of one side of butterfly valve 6 extrudes connecting ring 9 and sealing ring 10, and sealing is carried out in valve body 1, so as to avoid the occurrence of leakage, and simultaneously, first flange 11 is connected with second flange 16, and clamping block 18 of second flange 16 extrudes sealing groove 13 and internally installed sealing element 14 on one side of first flange 11, so as to strengthen the sealing between the two, avoid the occurrence of leakage.

[0035] As shown in the figure, Figure 1 , Figure 2 and Figure 2As shown, the spring 8 is arranged in a ring array on one side of the butterfly valve 6, and the sealing ring 10 is arranged on one side of the connecting ring 9. When the butterfly valve 6 is pushed by the medium behind it, the spring 8 inside the groove 7 on one side of the butterfly valve 6 is used to extrude the connecting ring 9 and the sealing ring 10, and the sealing is performed in the valve body 1, so as to avoid the leakage.

[0036] As shown in Figure 2 , Figure 3 and Figure 4 , the filter assembly 15 includes a sliding groove 1501, a sliding block 1502, a sleeve 1503, a filter screen 1504, and a bolt 1505. The sliding groove 1501 is arranged on the inside of the first flange 11, and the sliding block 1502 is movably connected inside the sliding groove 1501. The sleeve 1503 is fixedly installed on one side of the sliding block 1502, and the filter screen 1504 is arranged inside the sleeve 1503. The bolt 1505 penetrates through the two sides of the sleeve 1503. The impurities in the conveying medium are filtered by the filter screen 1504 in the sleeve 1503 when the medium is conveyed into the first flange 11 at both ends. In this way, the filter assembly 15 not only filters out the impurities in the medium, but also avoids the damage caused by the impurities entering the valve body 1 after long-term use, so that the normal work is not affected and the service life is reduced.

[0037] As shown in Figure 4 , the sliding block 1502 fixedly installed on the upper and lower sides of the sleeve 1503 is in sliding connection with the first flange 11, and the outer diameter of the sleeve 1503 matches the inner diameter of the first flange 11. The sleeve 1503 is fixedly positioned in the first flange 11 at both ends through the sliding block 1502, and is also convenient to disassemble.

[0038] As shown in Figure 1 , Figure 4 and Figure 6 , the clamping block 18 fixedly installed on one side of the second flange 16 is movably clamped with the sealing groove 13 arranged on one side of the first flange 11, and the sealing element 14 is extruded between the sealing groove 13 and the clamping block 18. The sealing element 14 is installed inside the sealing groove 13 and the clamping block 18 on one side of the first flange 11, so as to strengthen the sealing between the two, and avoid the leakage.

[0039] As shown in Figure 1 , Figure 4 and Figure 6 , the limiting column 12 is fixedly installed on one side of the first flange 11, and the limiting groove 17 is arranged on the inner surface of one side of the second flange 16. The first flange 11 is movably sleeved with the second flange 16 through the limiting column 12. The limiting column 12 on one side of the first flange 11 is aligned with the limiting groove 17 inside the second flange 16, so as to improve the butt joint between the two.

[0040] The utility model discloses a working principle: first sleeve 1503 upper and lower both sides'sliding block 1502 is aligned with the sliding slot 1501 that has been set up in the upper and lower both sides surface of first flange 11 inside, then sleeve 1503 is pushed into valve body 1, next through bolt 1505 sleeve 1503 is fixed in first flange 11 one side, after first flange 11 of valve body 1 both ends and the second flange 16 of conveying medium pipeline are connected, through the butt joint of the limiting slot 17 in the second flange 16 of first flange 11 one side's limiting column 12 alignment, has improved the butt joint of both, and when both are combined together, through the second flange 16 clamping block 18 extrusion first flange 11 one side sealing groove 13 and internal installation sealing element 14, to strengthen the sealing property between both, avoid the situation of causing leakage, finally through the mode of fixed together with screw thread connection, when needing to convey medium, will give priority to into sleeve 1503, utilize the filter screen 1504 in sleeve 1503 inside the impurity of medium and carry out filtration treatment, avoid the impurity into valve body 1 and cause abrasion, when medium enters valve body 1 and promotes butterfly valve 6 in valve body 1 and turns over, and the medium is conveyed to another end and is discharged, when conveying medium is finished, lose the thrust of medium flow butterfly valve 6 will fall down, utilize the spring 8 in the recess 7 of butterfly valve 6 one side inside extrusion connecting ring 9 and sealing ring 10, carry out sealing in valve body 1 and also avoid direct turning over and pound in valve body 1 inside and cause damage, after that when the medium backflow, through the filter screen 1504 of another sleeve 1503 and the medium backflow again, and the medium flow thrust of backflow, will push the rear of butterfly valve 6, will extrude butterfly valve 6 and one side sealing ring 10, to strengthen the sealing property of butterfly valve 6 again, avoid the situation of the medium backflow and leak, in this way the use process of the durable anti-leakage check valve is completed.

[0041] The above only describes certain exemplary embodiments of the utility model through the way of illustration, without doubt, for ordinary skilled person in the art, under the condition of not deviating from the spirit and scope of the utility model, can modify the described embodiment in various different ways. Therefore, the above drawing and description are illustrative in nature, and should not be understood as limiting the scope of protection of the utility model claims.

Claims

1. A durable anti-leakage check valve, characterized by: comprising a valve body (1); A butterfly valve (6) is installed inside a valve body (1) and is used for checking the medium. An upper cover (2) is installed above the valve body (1). A housing (3) is fixedly installed outside the valve body (1). A movable rod (4) is movably connected inside the housing (3). A sleeve rod (5) is movably connected outside the movable rod (4). The butterfly valve (6) is installed on one side of the sleeve rod (5). A sealing ring (10) is installed on one side of the butterfly valve (6) to strengthen the seal. A groove (7) is provided inside one side of the butterfly valve (6). A spring (8) is provided inside each groove (7). A connecting ring (9) is fixedly installed on one side of the spring (8). A first flange (11) is mounted on both ends of the valve body (1) and is used to connect a pipeline. A sealing groove (13) is provided on an inner surface of one side of the first flange (11), and a sealing member (14) is provided inside the sealing groove (13). A second flange (16) is mounted on one side of the first flange (11), and a clamping block (18) is fixedly mounted on one side of the second flange (16); The filter assembly (15) is installed inside the first flange (11) and is used to filter impurities.

2. A durable anti-leakage check valve according to claim 1, characterized in that: The spring (8) has grooves (7) arranged on one side of the butterfly valve (6) and distributed in an annular array, and the sealing ring (10) is arranged on one side of the connecting ring (9).

3. A durable anti-leakage check valve according to claim 1, characterized in that: The filter assembly (15) includes a slide (1501), a slider (1502), a sleeve (1503), a filter screen (1504), and a bolt (1505). The slide (1501) is provided on the upper and lower sides of the interior of the first flange (11). The slide (1502) is movably connected to the interior of the slide (1501). A sleeve (1503) is fixedly installed on one side of the slider (1502). A filter screen (1504) is provided inside the sleeve (1503). Bolts (1505) pass through both sides of the sleeve (1503).

4. A durable anti-leakage check valve according to claim 3, characterized in that: The sliding blocks (1502) fixedly mounted on the upper and lower sides of the sleeve (1503) are slidably connected to the first flange (11), and the outer diameter of the sleeve (1503) matches the inner diameter of the first flange (11).

5. The durable anti-leakage check valve according to claim 1, characterized in that: A clamping block (18) is fixedly mounted on one side of the second flange (16) and is movably clamped to a sealing groove (13) provided on one side of the first flange (11), and the sealing member (14) is squeezed between the sealing groove (13) and the clamping block (18).

6. A durable anti-leakage check valve according to claim 1, characterized in that: A limiting column (12) is fixedly installed on one side of the first flange (11), and a limiting groove (17) is provided on the inner surface of one side of the second flange (16). The first flange (11) is movably connected to the second flange (16) through the limiting column (12).

Images