Water outlet connecting structure of farmland irrigation valve with high sealing performance

Abstract

The utility model relates to a high-leakproofness farmland irrigation valve water outlet connecting structure applied to the field of valve connection, which comprises an external thread joint positioned below a three-way valve, the upper end of the external thread joint is fixedly connected with a solenoid, the solenoid is in threaded connection with the inner wall of the three-way valve, the surface of the solenoid is provided with a limiting groove, and a sealing ring is arranged in the limiting groove. A positioning block is fixedly connected to the outer surface of the three-way valve, a rotation stopping screw is arranged at the end, away from the three-way valve, of the positioning block, the end, close to the positioning block, of the rotation stopping screw sequentially penetrates through the positioning block and the three-way valve in a threaded mode and abuts against the solenoid, and the outer surface of the three-way valve is fixedly sleeved with a positioning ring. A traditional mode of taper pipe thread sealing is changed, the step of winding a raw material belt when the valve and the water outlet are connected is effectively reduced, and threaded connection looseness is effectively prevented by screwing up the rotation stopping screw and then abutting against the external thread connector, so that the situations of looseness, leakage and the like in the using process of the valve are effectively avoided.

Description

Technical Field

[0001] The utility model relates to a valve outlet connection structure, in particular to a high-sealing farmland irrigation valve outlet connection structure applied to the valve connection field. Background Art

[0002] Valves can be used to control the flow of various fluids, including air, water, steam, various corrosive media, slurries, oils, liquid metals, and radioactive media. Valves are also categorized by material, including cast iron valves, cast steel valves, stainless steel valves, chrome-molybdenum steel valves, chrome-molybdenum-vanadium steel valves, duplex steel valves, plastic valves, and custom-made valves.

[0003] Existing valves usually use a tapered pipe thread sealing method when connecting to pipe joints, and then wrap the external thread with raw tape to improve the sealing of the connection. However, this connection method is not only cumbersome to operate, but also difficult to disassemble and assemble after installation. After long-term use, the threaded connection between the tapered pipe and the valve may loosen, causing liquid or gas in the valve to leak out, thereby causing inconvenience to the staff. Utility Model Content

[0004] In view of the above-mentioned existing technology, the technical problem to be solved by the present invention is that the existing valve and pipe joints adopt a tapered pipe thread sealing method, and then wrap the external thread with raw tape to improve the sealing during connection. This method is not only difficult to disassemble and assemble, but after long-term use, the threaded connection between the tapered pipe and the valve may become loose, thereby causing leakage.

[0005] The cam is threadably connected to the valve body by a threaded connection to the valve body, and the cam is secured to the valve body with an angular channel formed between the end of the valve body and the valve body, and a check valve is placed in the cam face to close the check valve.

[0006] In the above-mentioned high-sealing farmland irrigation valve outlet connection structure, the traditional method of using tapered pipe thread sealing has been changed, effectively reducing the steps of wrapping raw tape when connecting the valve and the outlet. By tightening the stop screw and supporting the external thread joint, the threaded connection is effectively prevented from loosening, thereby effectively avoiding the occurrence of loosening and leakage during the use of the valve.

[0007] As a further improvement of the present application, the external thread connector and the spiral tube are both made of UPVC material, and the outer surface of the spiral tube is provided with a large pitch thread.

[0008] As a further improvement of the present application, the sealing ring is O-shaped and is made of silicone material.

[0009] As a further improvement of the present application, the lower end of the positioning ring fits into the upper end of the external thread connector, and the positioning ring and the external thread connector have the same diameter.

[0010] As another improvement of the present application, the lower end of the inserting plate is fitted with the upper end of the positioning ring, and the inserting plate is arc-shaped as a whole.

[0011] As another improvement of the present application, multiple slide grooves and multiple insert plates are distributed in a ring array around the central axis of the regulating tube, the limit block is located below the sealing ring, and the sealing ring is made of rubber material.

[0012] To sum up, in actual application, the spiral tube is screwed into the lower end of the three-way valve so that the lower end of the three-way valve contacts the external thread joint. At this time, the sealing ring is squeezed and deformed to fit with the inner wall of the three-way valve, thereby effectively improving the sealing during the connection. Then the anti-rotation screw is passed through the positioning block and the three-way valve, and it is in conflict with the thread of the spiral tube, effectively preventing the threaded connection from loosening, thereby effectively avoiding the occurrence of loosening, leakage, etc. during the use of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application;

[0014] Figure 2 This is a structural cross-sectional view of the first embodiment of the present application;

[0015] Figure 3 This is an exploded view of the structure of the first embodiment of the present application;

[0016] Figure 4 This is a left view of the outer wire connector structure according to the first embodiment of the present application;

[0017] Figure 5 This is a structural front view of the second embodiment of the present application;

[0018] Figure 6 This is a schematic diagram of the regulating tube structure of the second embodiment of this application.

[0019] Description of the numbers in the figure:

[0020] 1 three-way valve, 2 external thread connector, 3 screw tube, 4 limit groove, 5 sealing ring, 6 positioning block, 7 stop screw, 8 positioning ring, 9 adjusting tube, 10 sealing ring, 11 slide groove, 12 limit block, 13 plug plate. DETAILED DESCRIPTION

[0021] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0022] The first implementation method:

[0023] Figure 1 and Figure 2 It shows: a highly sealing farmland irrigation valve outlet connection structure, including an external thread joint 2 located below the three-way valve 1, the upper end of the external thread joint 2 is fixedly connected to a spiral tube 3, the spiral tube 3 is threadedly connected to the inner wall of the three-way valve 1, the spiral tube 3 is threadedly connected to the three-way valve 1, which is convenient for fixing the three-way valve 1 to the external thread joint 2, the lower end of the external thread joint 2 is a socket type and is vertically bonded to the underground UPVC pipe, a limiting groove 4 is excavated on the surface of the spiral tube 3, and a sealing ring 5 is provided in the limiting groove 4.

[0024] Figure 3 and Figure 4 It is shown that: the outer surface of the three-way valve 1 is fixedly connected to a positioning block 6, and a stop screw 7 is provided at the end of the positioning block 6 away from the three-way valve 1, and the end of the stop screw 7 close to the positioning block 6 is threaded through the positioning block 6 and the three-way valve 1 in sequence and conflicts with the spiral tube 3. The external thread connector 2 and the spiral tube 3 are both made of UPVC material. The outer surface of the spiral tube 3 is provided with a large pitch thread, which effectively prevents frequent disassembly and assembly of the threaded buckle. The sealing ring 5 is O-shaped and made of silicone material. The sealing ring 5 is squeezed and deformed to fit the inner wall of the three-way valve 1, thereby effectively improving the sealing during connection.

[0025] During use, screw the spiral tube 3 into the lower end of the three-way valve 1 so that the lower end of the three-way valve 1 contacts the external thread connector 2. At this time, the sealing ring 5 is squeezed and deformed to fit the inner wall of the three-way valve 1, thereby effectively improving the sealing during the connection. Then, the anti-rotation screw 7 is passed through the positioning block 6 and the three-way valve 1, and it is in conflict with the thread of the spiral tube 3, effectively preventing the threaded connection from loosening, thereby effectively avoiding the occurrence of loosening, leakage, etc. during the use of the valve.

[0026] Second implementation method:

[0027] Based on the first embodiment, this embodiment adds a positioning ring 8, an adjustment tube 9, a sealing ring 10, a sliding groove 11, a limit block 12 and an inserting plate 13, and the rest of the parts are consistent with the first embodiment.

[0028] Figure 5 and Figure 6 It is shown that: the outer surface of the three-way valve 1 is fixedly sleeved with a positioning ring 8, which is convenient for limiting the three-way valve 1, the outer surface of the external thread joint 2 is sleeved with an adjusting tube 9, the inner wall of the adjusting tube 9 is fixedly connected with a sealing ring 10, the outer surfaces of the positioning ring 8 and the external thread joint 2 are both in contact with the inner wall of the sealing ring 10, and the connection between the three-way valve 1 and the external thread joint 2 can be sealed, and the outer surface of the external thread joint 2 is chiseled with a plurality of chute grooves 11, and the chute 11 is slidably connected with a limiting block 12, the chute 11 and the limiting block 12 can limit the adjusting tube 9, effectively preventing the adjusting tube 9 from falling off, and the end of the limiting block 12 away from the chute 11 is in contact with the adjusting tube 9 The inner wall of the adjusting tube 9 is fixedly connected, and a plurality of plug-ins 13 are provided on the outer surface of the adjusting tube 9. The plug-in plate 13 is movable through the adjusting tube 9 near one end of the adjusting tube 9, and the lower end of the plug-in plate 13 is fitted with the upper end of the positioning ring 8. The plug-in plate 13 is arc-shaped as a whole. The plurality of plug-ins 13 are located above the positioning ring 8, thereby limiting and fixing the adjusting tube 9. The lower end of the positioning ring 8 is fitted with the upper end of the external thread connector 2. The positioning ring 8 and the external thread connector 2 have the same diameter. The plurality of slide grooves 11 and the plurality of plug-ins 13 are distributed in a ring array around the central axis of the adjusting tube 9. The limit block 12 is located below the sealing ring 10, and the sealing ring 10 is made of rubber material.

[0029] When in use, after screwing the stop screw 7 into the positioning block 6, push the adjusting tube 9 upward, driving the limit block 12 and the sealing ring 10 to move upward until the sealing ring 10 covers the connection between the positioning ring 8 and the external thread connector 2, and then insert multiple plug plates 13 so that they are located at the upper end of the positioning ring 8, thereby limiting the adjusting tube 9. The sealing ring 10 can be used to perform an additional auxiliary seal on the connection between the three-way valve 1 and the external thread connector 2 from the outside, so that the connection between the external thread connector 2 and the three-way valve 1 through the stop screw 7 is more sealed, further reducing water seepage, and at the same time, it can also limit the external thread connector 2, making it difficult for the external thread connector 2 to separate downward from the three-way valve 1, thereby effectively improving the stability of the connection between the three-way valve 1 and the external thread connector 2.

[0030] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A highly sealed farmland irrigation valve outlet connection structure, comprising an external thread connector (2) located below a three-way valve (1), characterized in that: The upper end of the external thread connector (2) is fixedly connected to a screw tube (3), and the screw tube (3) is threadedly connected to the inner wall of the three-way valve (1). A limiting groove (4) is cut on the surface of the screw tube (3), and a sealing ring (5) is provided in the limiting groove (4). The outer surface of the three-way valve (1) is fixedly connected to a positioning block (6), and an end of the positioning block (6) away from the three-way valve (1) is provided with a stop screw (7), and an end of the stop screw (7) close to the positioning block (6) is threadedly passed through the positioning block (6), the three-way valve (1) and contacts the screw tube (3); The outer surface of the three-way valve (1) is fixedly sleeved with a positioning ring (8), the outer surface of the external thread joint (2) is sleeved with an adjusting tube (9), the inner wall of the adjusting tube (9) is fixedly connected with a sealing ring (10), the outer surfaces of the positioning ring (8) and the external thread joint (2) are both in contact with the inner wall of the sealing ring (10), the outer surface of the external thread joint (2) is cut with a plurality of sliding grooves (11), the sliding grooves (11) are slidably connected with a limiting block (12), the end of the limiting block (12) away from the sliding groove (11) is fixedly connected to the inner wall of the adjusting tube (9), the outer surface of the adjusting tube (9) is provided with a plurality of plug plates (13), the plug plate (13) is movable through the adjusting tube (9) at one end close to the adjusting tube (9).

2. The high-sealability farmland irrigation valve outlet connection structure according to claim 1, characterized in that: The external thread connector (2) and the spiral tube (3) are both made of UPVC material, and the outer surface of the spiral tube (3) is provided with a large-pitch thread.

3. The high-sealability farmland irrigation valve outlet connection structure according to claim 1, characterized in that: The sealing ring (5) is O-shaped and is made of silicone material.

4. The high-sealability farmland irrigation valve outlet connection structure according to claim 1, characterized in that: The lower end of the positioning ring (8) fits into the upper end of the external thread connector (2), and the positioning ring (8) and the external thread connector (2) have the same diameter.

5. The high-sealability farmland irrigation valve outlet connection structure according to claim 1, characterized in that: The lower end of the inserting plate (13) is fitted with the upper end of the positioning ring (8), and the inserting plate (13) is arc-shaped as a whole.

6. The high-sealability farmland irrigation valve outlet connection structure according to claim 1, characterized in that: The plurality of slide grooves (11) and the plurality of insert plates (13) are distributed in a ring array around the central axis of the regulating tube (9), and the limit block (12) is located below the sealing ring (10), and the sealing ring (10) is made of rubber material.

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