A welding oil check valve and its use method

Abstract

The present invention relates to the technical field of check valves, and specifically to a welding oil check valve and a method for using the same. The present invention provides a welding oil check valve, comprising: a valve body, the interior of the valve body is hollow, and a valve core is provided in the valve body for lifting and lowering; a gasket, the gasket is horizontally fixed in the valve body, and the inner diameter of the gasket is smaller than the outer diameter of the valve core; a filter cleaning component, the filter cleaning component is slidably arranged on the gasket, and the filter cleaning component is arranged circumferentially around the valve core; wherein the medium pushes the valve core to move upward, and the filter cleaning component is suitable for filtering impurities in the medium; when the valve core moves downward, the protrusion on the outer wall of the valve core is suitable for pushing the filter cleaning component to move outward, and the filter cleaning component is suitable for scraping impurities on the gasket. The provision of the filter cleaning component improves the sealing performance of the valve core.

Description

Technical Field

[0001] The invention relates to the technical field of check valves, and in particular to a welding oil check valve and a use method thereof. Background Art

[0002] For welding oil, it means that the joint end is welded on the pipeline; for vertically arranged pipelines, a check valve is usually fixed between the two joint ends. The medium flows from bottom to top, and the medium pushes the valve core to move upward.

[0003] When the medium flows upward without pressure, the valve core falls downward due to its own weight and finally sticks to the gasket, preventing the medium above from flowing downward. However, the medium flows to both sides due to the obstruction of the valve core, and the impurities in the medium will accumulate on the gasket. The long-term accumulation of impurities in the medium will cause the valve core to move downward and abut against the gasket, which will reduce the sealing performance and affect the non-return effect of the valve body.

[0004] Therefore, how to solve the air tightness between the valve core and the gasket is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The object of the present invention is to provide a welding oil check valve and a use method thereof.

[0006] In order to solve the above technical problems, the present invention provides a welding oil check valve, comprising:

[0007] A valve body, wherein the interior of the valve body is hollow and a valve core is arranged in the valve body for lifting and lowering;

[0008] A gasket, the gasket is horizontally fixed in the valve body, and the inner diameter of the gasket is smaller than the outer diameter of the valve core;

[0009] A filter cleaning component, wherein the filter cleaning component is slidably disposed on the gasket and is circumferentially disposed around the valve core;

[0010] The medium pushes the valve core upward, and the filter cleaning component is suitable for filtering impurities in the medium;

[0011] When the valve core moves downward, the protrusion on the outer wall of the valve core is suitable for pushing the filter cleaning component to move outward, and the filter cleaning component is suitable for scraping impurities on the gasket.

[0012] Preferably, a plurality of limit rods are fixed to the inner wall of the valve body along the axial direction, and the plurality of limit rods are arranged circumferentially along the inner wall of the valve body;

[0013] Every two of the protrusions are symmetrically fixed on the outer wall of the valve core, and the distance between the two protrusions is not less than the width of the limiting rod.

[0014] Preferably, the filter cleaning assembly comprises: a filter plate, the filter plate is slidably arranged on the gasket, and a plurality of the filter plates are equidistantly arranged around the gasket in a circumferential direction;

[0015] The connecting piece is a flexible piece, and both ends of the connecting piece are respectively fixed on the side walls of the filter plate.

[0016] Preferably, the filter disc is in an arc shape, and the inner diameter of a circular ring formed by a plurality of the filter discs is not less than the outer diameter of the valve core.

[0017] Preferably, the filter cleaning assembly further comprises a sealing ring, and the sealing ring is suitable for abutting against the gasket;

[0018] A connecting rod is fixed to the inner wall of each filter sheet, and one end of the connecting rod is fixed to the sealing ring;

[0019] When the valve core pushes the filter plate to slide outward, the connecting rod is suitable for pulling the sealing ring to expand and deform outward.

[0020] Preferably, the upper end of the valve body abuts against the upper socket, and the upper end of the upper socket is fixed on the pipeline;

[0021] An upper nut is sleeved on the outer wall of the upper socket, and the upper nut is suitable for being threadedly fixed with the valve body.

[0022] Preferably, the lower end of the valve body abuts against the lower bellmouth, and the lower end of the lower bellmouth is fixed on the pipeline;

[0023] A lower nut is sleeved on the outer wall of the lower socket, and the lower nut is suitable for being threadedly fixed with the valve body.

[0024] Preferably, a cushion block is fixed in the valve body, and the inner diameter of the cushion block is consistent with the inner diameter of the gasket.

[0025] Preferably, a plurality of upper positioning teeth are fixed to the lower end of the upper nut, the upper positioning teeth are in the shape of a right triangle, and the hypotenuse of the upper positioning teeth is arranged downward.

[0026] Preferably, a plurality of lower positioning teeth are fixed to the upper end of the lower nut, the lower positioning teeth are in the shape of a right triangle, and the hypotenuse of the lower positioning teeth is parallel to the hypotenuse of the upper positioning teeth.

[0027] Preferably, a locking block is detachably provided on the outer wall of the valve body, and two ends of the locking block are respectively abutted against the upper positioning tooth and the lower positioning tooth.

[0028] On the other hand, the present invention also provides a method for using a welding oil check valve, comprising the following steps:

[0029] After the upper socket and the lower socket are respectively in contact with the valve body, the upper nut and the lower nut are suitable for fixing them at both ends of the valve body;

[0030] When the medium flows from bottom to top, the medium is suitable for pushing the valve core to move upward until the valve core moves to the maximum stroke; after passing through the filter plate, the medium flows upward, and the filter plate is suitable for filtering and intercepting impurities in the medium;

[0031] When the medium in the lower socket stops flowing upward, the valve core moves downward under the action of its own gravity, and the protrusion on the outer wall of the valve core abuts against the upper end of the filter plate when moving downward, and the protrusion is suitable for pushing the filter plate to slide outward;

[0032] When the filter moves outward, it is suitable for pulling the sealing ring to expand outward, and the sealing ring is suitable for scraping impurities on the gasket until the bottom wall of the valve core abuts against the gasket; at this time, the sealing ring is sleeved on the outer wall of the valve core.

[0033] The beneficial effect of the present invention is that, in the welding oil check valve of the present invention, when the valve core moves upward to open the valve body, the filter plate can filter impurities in the medium through the setting of the filter cleaning component; and when the valve core moves downward to close the valve body, the filter plate moves outward to drive the sealing ring to expand and deform outward, and the sealing ring slides on the gasket to scrape off the impurities on the gasket, thereby avoiding the accumulation of impurities on the gasket and causing the sealing to deteriorate. The sealing effect of the valve core on the valve body is improved.

[0034] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practicing the present invention.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a stereoscopic diagram of a preferred embodiment of a welding oil check valve of the present invention;

[0038] Figure 2 It is a schematic diagram of the expanded state of the welding oil check valve of the present invention;

[0039] Figure 3 is a cutaway perspective view of the interior of the valve body of the present invention;

[0040] Figure 4 is a stereoscopic view of the filter cleaning assembly of the present invention;

[0041] Figure 5 This is a schematic diagram of the valve core in the open state of the present invention;

[0042] Figure 6 It is a schematic diagram of the valve core closed state of the present invention.

[0043] In the figure:

[0044] 1. Valve body; 11. Valve core; 12. Bump; 13. Limit rod; 14. Upper socket; 15. Upper nut; 16. Lower socket; 17. Lower nut; 18. Upper positioning tooth; 19. Lower positioning tooth; 20. Locking block;

[0045] 2. Gasket; 21. Pad;

[0046] 3. Filter cleaning assembly; 31. Filter plate; 32. Connecting piece; 33. Sealing ring; 34. Connecting rod. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In some embodiments, Figures 1 to 6 As shown, the present invention provides a welding oil check valve, comprising:

[0049] The valve body 1 is hollow inside, and a chamber is arranged inside the valve body 1, and the inner diameter of the chamber is larger than the outer diameter of the valve core 11. A valve core 11 is arranged in the valve body 1 for lifting; the valve core 11 is suitable for vertically moving up and down in the chamber; when the valve core 11 is away from the gasket 2, the medium in the lower socket 16 is suitable for flowing through the chamber toward the upper socket 14. The gasket 2 is horizontally fixed in the valve body 1, and the inner diameter of the gasket 2 is smaller than the outer diameter of the valve core 11; when the valve core 11 abuts against the gasket 2, the valve core 11 is suitable for sealing the valve body 1. The filter cleaning assembly 3 is slidably arranged on the gasket 2, and the filter cleaning assembly 3 is circumferentially arranged around the valve core 11; wherein, the medium pushes the valve core 11 upward, and the filter cleaning assembly 3 is suitable for filtering impurities in the medium; when the valve core 11 moves downward, the protrusion 12 on the outer wall of the valve core 11 is suitable for pushing the filter cleaning assembly 3 outward, and the filter cleaning assembly 3 is suitable for scraping impurities on the gasket 2. Through the arrangement of the filter cleaning assembly 3, when the valve core 11 moves upward to open the valve body 1, the filter plate 31 can filter impurities in the medium; and when the valve core 11 moves downward to close the valve body 1, the filter plate 31 moves outward to drive the sealing ring 33 to expand and deform outward, and the sealing ring 33 slides on the gasket 2 to scrape impurities on the gasket 2, avoiding the accumulation of impurities on the gasket 2, which causes the seal to deteriorate. The sealing effect of the valve core 11 on the valve body 1 is improved.

[0050] In order to prevent the valve core 11 from rotating in the chamber, a plurality of limit rods 13 are fixed along the axial direction on the inner wall of the valve body 1, and the limit rods 13 are arranged circumferentially along the inner wall of the valve body 1; every two of the protrusions 12 are symmetrically fixed on the outer wall of the valve core 11, and the distance between the two protrusions 12 is not less than the width of the limit rod 13. The cooperation between the protrusion 12 and the limit rod 13 can prevent the valve core 11 from rotating relative to the valve body 1 when the medium pushes the valve core 11 to flow upward. The outer diameter of the upper end of the valve core 11 is smaller than the outer diameter of the lower end of the valve core 11, and a limit block is arranged in the valve body 1, and the limit block is suitable for abutting against the outer wall of the upper end of the valve core 11. When the medium pushes the valve core 11 to move upward, until the outer wall of the valve core 11 abuts against the limit block, the valve core 11 moves upward to the maximum stroke. The setting of the limit block prevents the pressure of the medium from being too high, which would cause the valve core 11 to move upward and block the water inlet of the upper bearing 14.

[0051] Reference Figure 3The filter cleaning assembly 3 comprises: a filter disc 31, which is slidably arranged on the gasket 2, and a plurality of the filter discs 31 are arranged circumferentially around the gasket 2 at equal intervals; the filter disc 31 is in an arc shape, and the inner diameter of the circular ring formed by the plurality of the filter discs 31 is not less than the outer diameter of the valve core 11. When the valve core 11 moves upward relative to the filter disc 31 to the maximum stroke of the valve core 11, the inner wall of the upper end of the filter disc 31 is suitable for abutting against the outer wall of the valve core 11. At this time, after the medium is blocked by the valve core 11, the medium in the valve body 1 is suitable for passing through the filter disc 31 to flow upward, and the filter disc 31 is suitable for filtering and intercepting large particles of impurities in the medium. The filter disc 31 is provided with a plurality of mesh holes, and the medium is suitable for flowing through the filter disc 31 toward the upper socket 14; a connector 32, which is a flexible member, and the two ends of the connector 32 are respectively fixed to the side wall of the filter disc 31. The connecting member 32 is suitable for connecting two adjacent filter sheets 31 . When the protrusion 12 pushes the filter sheets 31 to slide outward, the filter sheets 31 are suitable for stretching the connecting member 32 during the outward sliding process.

[0052] The filter cleaning assembly 3 also includes a sealing ring 33, which is suitable for abutting against the gasket 2; a connecting rod 34 is fixed to the inner wall of each filter 31, and one end of the connecting rod 34 is fixed to the sealing ring 33; wherein, when the protrusion 12 on the outer wall of the valve core 11 pushes the filter 31 to slide outward, the lower end of the filter 31 slides outward, and at this time, the upper end of the filter 31 abuts against the outer wall of the valve core 11; the connecting rod 34 is suitable for pulling the sealing ring 33 to expand and deform outward. The sealing ring 33 expands and deforms outward on the gasket 2, and the sealing ring 33 can scrape off the impurities accumulated on the gasket 2. At this time, the impurities on the gasket 2 are cleaned, and impurities will not accumulate on the contact surface between the valve core 11 and the gasket 2, thereby avoiding the loose sealing between the valve core 11 and the gasket 2. When the lower end of the valve core 11 abuts against the gasket 2, the sealing ring 33 can be sleeved on the outer wall of the valve core 11, further improving the sealing effect between the valve core 11 and the gasket 2.

[0053] Reference Figure 2In order to facilitate the fixing of the valve body 1, the upper end of the valve body 1 is in contact with the upper socket 14, and an upper sealing ring is arranged between the upper end of the valve body 1 and the upper socket 14. When the upper end of the valve body 1 is in contact with the upper socket 14, the upper sealing ring is suitable for improving the direct airtightness between the two. The upper end of the upper socket 14 is fixed on the pipeline; the outer wall of the upper socket 14 is sleeved with an upper nut 15, and the upper nut 15 is suitable for threaded fixation with the valve body 1. The lower end of the valve body 1 is in contact with the lower socket 16, and a lower sealing ring is arranged between the lower end of the valve body 1 and the lower socket 16, and the lower sealing ring is suitable for improving the airtightness between the valve body 1 and the lower socket 16. The lower end of the lower socket 16 is fixed on the pipeline; the outer wall of the lower socket 16 is sleeved with a lower nut 17, and the lower nut 17 is suitable for threaded fixation with the valve body 1.

[0054] In order to improve the stability of the gasket 2, a gasket 21 is fixed in the valve body 1, and the inner diameter of the gasket 21 is consistent with the inner diameter of the gasket 2. A sealing ring is respectively provided at the lower end and the outer wall of the gasket 21, and the sealing ring improves the air tightness between the gasket 21 and the valve body 1. When the valve body 1 abuts against the lower bell mouth 16, the lower end of the gasket 21 abuts against the lower bell mouth 16, and the sealing ring improves the air tightness between the gasket 21 and the lower bell mouth 16.

[0055] In order to ensure the stability of the upper nut 15 and the lower nut 17 fixed to the valve body 1, a plurality of upper positioning teeth 18 are fixed to the lower end of the upper nut 15. The upper positioning teeth 18 are in the shape of a right triangle, and the hypotenuse of the upper positioning teeth 18 is set downward. A plurality of lower positioning teeth 19 are fixed to the upper end of the lower nut 17. The lower positioning teeth 19 are in the shape of a right triangle, and the hypotenuse of the lower positioning teeth 19 is parallel to the hypotenuse of the upper positioning teeth 18. A locking block 20 is detachably provided on the outer wall of the valve body 1, and the two ends of the locking block 20 are respectively abutted against the upper positioning teeth 18 and the lower positioning teeth 19. The setting of the locking block 20 can prevent the upper nut 15 and the lower nut 17 from being loosened due to the vibration caused by the up and down movement of the valve core 11 during the long-term use of the valve body 1, and the locking block 20 can prevent the upper nut 15 and the lower nut 17 from rotating circumferentially relative to the valve body 1.

[0056] In some embodiments, the present invention further provides a method for using a welding oil check valve, comprising the following steps:

[0057] After the upper socket 14 and the lower socket 16 are respectively in contact with the valve body 1, the upper nut 15 and the lower nut 17 are suitable for fixing them at both ends of the valve body 1;

[0058] When the medium flows upward from bottom to top, the medium is suitable for pushing the valve core 11 upward until the valve core 11 moves to the maximum stroke; the medium flows upward after passing through the filter plate 31, and the filter plate 31 is suitable for filtering and intercepting impurities in the medium;

[0059] When the medium in the lower socket 16 stops flowing upward, the valve core 11 moves downward under the action of its own gravity, and the protrusion 12 on the outer wall of the valve core 11 abuts against the upper end of the filter plate 31 when moving downward, and the protrusion 12 is suitable for pushing the filter plate 31 to slide outward;

[0060] When the filter plate 31 moves outward, it is suitable for pulling the sealing ring 33 to expand outward. The sealing ring 33 is suitable for scraping off impurities on the gasket 2 until the bottom wall of the valve core 11 abuts against the gasket 2; at this time, the sealing ring 33 is sleeved on the outer wall of the valve core 11.

[0061] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0062] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0064] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A welding oil check valve, characterized in that: include: A valve body (1), the interior of the valve body (1) being hollow, and a valve core (11) being arranged in a lifting manner inside the valve body (1); A gasket (2), the gasket (2) being fixed horizontally in the valve body (1), and the inner diameter of the gasket (2) being smaller than the outer diameter of the valve core (11); A filter cleaning component (3), the filter cleaning component (3) being slidably disposed on the gasket (2), and the filter cleaning component (3) being circumferentially disposed around the valve core (11); The medium pushes the valve core (11) to move upward, and the filter cleaning component (3) is suitable for filtering impurities in the medium; When the valve core (11) moves downward, the protrusion (12) on the outer wall of the valve core (11) is suitable for pushing the filter cleaning component (3) to move outward, and the filter cleaning component (3) is suitable for scraping impurities on the gasket (2); A plurality of limit rods (13) are fixed to the inner wall of the valve body (1) along the axial direction, and the plurality of limit rods (13) are arranged circumferentially along the inner wall of the valve body (1); Every two of the protrusions (12) are symmetrically fixed on the outer wall of the valve core (11), and the distance between the two protrusions (12) is not less than the width of the limiting rod (13); The filtering and cleaning assembly (3) comprises: a filter plate (31), wherein the filter plate (31) is slidably arranged on the gasket (2), and a plurality of the filter plates (31) are equidistantly arranged around the gasket (2) in a circumferential direction; A connecting piece (32), the connecting piece (32) being a flexible piece, and two ends of the connecting piece (32) are respectively fixed to the side walls of the filter sheet (31); The filter disc (31) is in an arc shape, and the inner diameter of a ring formed by a plurality of the filter discs (31) is not less than the outer diameter of the valve core (11); The filter cleaning assembly (3) further comprises a sealing ring (33), wherein the sealing ring (33) is suitable for abutting against the gasket (2); A connecting rod (34) is fixed to the inner wall of each filter sheet (31), and one end of the connecting rod (34) is fixed to the sealing ring (33); When the valve core (11) pushes the filter plate (31) to slide outward, the connecting rod (34) is suitable for pulling the sealing ring (33) to expand and deform outward.

2. A welding oil check valve as claimed in claim 1, characterized in that: The upper end of the valve body (1) abuts against the upper socket (14), and the upper end of the upper socket (14) is fixed on the pipeline; An upper nut (15) is sleeved on the outer wall of the upper receiving port (14), and the upper nut (15) is suitable for being threadedly fixed to the valve body (1); The lower end of the valve body (1) abuts against the lower bellmouth (16), and the lower end of the lower bellmouth (16) is fixed on the pipeline; The outer wall of the lower socket (16) is sleeved with a lower nut (17), and the lower nut (17) is suitable for being threadedly fixed to the valve body (1); A cushion block (21) is fixed inside the valve body (1), and the inner diameter of the cushion block (21) is consistent with the inner diameter of the gasket (2).

3. A welding oil check valve as claimed in claim 2, characterized in that: A plurality of upper positioning teeth (18) are fixed to the lower end of the upper nut (15), the upper positioning teeth (18) are in the form of a right triangle, and the hypotenuse of the upper positioning teeth (18) is arranged downward.

4. A welding oil check valve as claimed in claim 3, characterized in that: A plurality of lower positioning teeth (19) are fixed to the upper end of the lower nut (17), the lower positioning teeth (19) are in the form of a right triangle, and the hypotenuse of the lower positioning teeth (19) is parallel to the hypotenuse of the upper positioning teeth (18).

5. A welding oil check valve as claimed in claim 4, characterized in that: A locking block (20) is detachably provided on the outer wall of the valve body (1), and two ends of the locking block (20) are respectively in contact with the upper positioning tooth (18) and the lower positioning tooth (19).

6. A method for using a welding oil check valve, characterized in that: A welding oil check valve as claimed in claim 5, comprising the following steps: After the upper socket (14) and the lower socket (16) are respectively in contact with the valve body (1), the upper nut (15) and the lower nut (17) are suitable for fixing them at two ends of the valve body (1); When the medium flows from bottom to top, the medium is suitable for pushing the valve core (11) upward until the valve core (11) moves to a maximum stroke; The medium flows upward after passing through the filter sheet (31), and the filter sheet (31) is suitable for filtering and intercepting impurities in the medium; When the medium in the lower socket (16) stops flowing upward, the valve core (11) moves downward under the action of its own weight, and the protrusion (12) on the outer wall of the valve core (11) abuts against the upper end of the filter plate (31) when moving downward, and the protrusion (12) is suitable for pushing the filter plate (31) to slide outward; During the process of the filter plate (31) moving outward, it is suitable for pulling the sealing ring (33) to expand outward, and the sealing ring (33) is suitable for scraping off impurities on the gasket (2) until the bottom wall of the valve core (11) abuts against the gasket (2); at this time, the sealing ring (33) is sleeved on the outer wall of the valve core (11).

Images