Novel water dropper for polyethylene drip irrigation pipe

Abstract

The utility model discloses a novel water dropper for a polyethylene drip irrigation pipe, and mainly relates to the field of drip irrigation heads. Comprising a supporting piece and a plug piece, the supporting piece comprises a straight rod and an elastic ring, one end of the straight rod is fixed to the top of the inner wall of the elastic ring, a through hole through which the straight rod penetrates is formed in the bottom of the elastic ring, the plug piece comprises a conical plug head, and a threaded groove in threaded connection with the straight rod is formed in the middle of the round end face of the narrow end of the plug head. A conical cavity matched with the chock plug is formed in the chock plug, a water permeable hole penetrating through the side wall is formed in the upper portion of the conical cavity, and a valve cavity penetrating through the bottom end of the chock plug is formed in the bottom end of the cavity. The utility model has the beneficial effects that the water pipe connector can be fixed on the water pipe in a tapping manner, and the sealing and fixing effect with the tapping position of the water pipe is improved.

Description

Technical Field

[0001] The utility model relates to the field of drip irrigation heads, in particular to a novel dripper for a polyethylene drip irrigation pipe. Background Art

[0002] Drip irrigation technology is widely used in agriculture. By delivering water and fertilizer directly to the roots of crops, it achieves integrated water and fertilizer use, thereby improving water and fertilizer utilization efficiency. This technology is particularly suitable for arid and water-scarce areas because it can significantly reduce water evaporation and leakage, while also avoiding over-application of fertilizer.

[0003] Drip heads are the core components of drip irrigation systems, and their selection and structural design are crucial to the efficiency and effectiveness of the entire system. Currently, there are two main ways to connect drip heads to water pipes. One method involves drilling a hole in the pipe and inserting the drip head's plug into the hole for a sealed connection. The other method involves severing the pipe and attaching a pipe fitting connected to the cut. The second method is obviously more damaging to the pipe, resulting in significant pipe loss if the installation position needs to be adjusted. Therefore, the first method is actually more widely used. However, because some field water pipes are made of relatively soft rubber hoses, maintaining a seal at the connection between the drip head and the pipe is often difficult. After dragging and using for a period of time, water leaks often occur at the interface, resulting in uncontrolled drip irrigation water output. This not only wastes water resources but also disrupts the optimal water supply environment for crop growth. Utility Model Content

[0004] The purpose of the utility model is to provide a novel polyethylene drip irrigation pipe dripper, which can be fixed on the water pipe by opening a hole and improves the sealing and fixing effect with the water pipe opening position.

[0005] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0006] A novel dripper for a polyethylene drip irrigation pipe comprises a support member and a plug member, wherein the support member comprises a straight rod and an elastic ring, one end of the straight rod is fixed to the top of the inner wall of the elastic ring, and the bottom of the elastic ring is provided with a through hole penetrated by the straight rod, and the plug member comprises a conical plug head, a thread groove threadedly connected to the straight rod is provided in the center of the circular end surface of the narrower end of the plug head, a conical cavity adapted thereto is provided inside the plug head, a water-permeable hole penetrating the side wall is provided on the upper part of the conical cavity, and a valve cavity penetrating the bottom end of the plug head is provided at the bottom end of the cavity.

[0007] The wider end of the plug is provided with a connecting seat coaxial therewith, the valve cavity passes through the connecting seat, the connecting seat is matched with a cap seat, the connecting seat is threadedly connected to the cap seat, a disc-shaped water distribution cavity is provided in the cap seat, water outlet holes are provided on the circumference or bottom of the water distribution cavity, a raised conical valve core is provided in the center of the water distribution cavity, and the valve cavity is conical and matched with the valve core.

[0008] There is an annular step structure between the connecting seat and the wide end face of the plug head. A pull ring is sleeved on the connecting seat and cannot pass through the step structure. The inner diameter of the pull ring is adapted to the outer diameter of the connecting seat. A pull belt and a toothed belt are fixed on both sides of the pull ring, and the ends of the pull belt and the toothed belt can be tightened and connected.

[0009] A clamping ring is provided at the end of the pull belt, and a wedge-shaped convex tooth is provided on the outer side of the toothed belt. The wedge-shaped convex tooth cooperates with the clamping ring to lock.

[0010] The number of the water outlet holes is 6-12 and they are distributed in a ring shape on the peripheral side wall of the cap seat.

[0011] A corresponding sleeve cap is movably inserted on the outside of the cap seat, and an arc-shaped hole is provided on the side wall of the sleeve cap corresponding to the water outlet position. The arc-shaped hole can expose part of the water outlet, and an arc-shaped sealing gasket is provided on the inner wall of the sleeve cap. The sealing gasket is located at the water outlet position and can cover other water outlet holes that are not located at the arc-shaped hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] Combined with the support of the support piece on the top of the inner wall of the water pipe, it can achieve auxiliary internal shaping of the water pipe at the opening position, reduce the deformation of the water pipe caused by the opening and plugging of the plug, as well as long-term use, and improve the durability of the dripper installation seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the use of the present utility model.

[0015] Figure 2 It is a schematic diagram of the present utility model.

[0016] Figure 3 It is a front schematic diagram of the utility model in use.

[0017] Figure 4 It is a schematic cross-sectional view along the center of the straight pipe when the utility model is in use.

[0018] Figure 5 This is a schematic diagram of the disassembly of components of the utility model.

[0019] Figure 6 It is a schematic diagram of the internal structure of the plug of the utility model.

[0020] Reference numerals shown in the accompanying drawings:

[0021] 1. Straight rod; 2. Elastic ring; 3. Through hole; 4. Plug; 5. Threaded groove; 6. Conical cavity; 7. Water hole; 8. Valve cavity; 9. Connecting seat; 10. Step structure; 11. Pull ring; 12. Pull belt; 13. Toothed belt; 14. Snap ring; 15. Cap seat; 16. Water distribution cavity; 17. Valve core; 18. Sealing ring; 19. Water outlet; 20. Cap; 21. Wedge-shaped clamp; 22. Arc hole; 23. Sealing gasket. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined in this application.

[0023] This dripper has been improved in its connection method with the water pipe. The water pipe is a rubber water pipe with a certain degree of softness. Although it has a good shape, it will lose its sealing at the punching position due to deformation of the pipe body under tight binding and long-term use, resulting in water leakage. The main structure of this dripper includes:

[0024] Support and plug parts of separate structures.

[0025] The support member includes a straight rod 1, one end of which is fixed with an elastic ring 2, the top of the elastic ring 2 is fixed in the center of the top of the straight rod 1, and the bottom of the elastic ring 2 is provided with a through hole 3 penetrated by the straight rod 1. The elastic ring 2 has a certain elasticity and can be made of a metal ring or a plastic ring. It can be inserted into the opening on the water pipe through its own deformation and pressed against the inner wall opposite the water pipe opening through the elastic ring 2. The lower half of the straight rod 1 is provided with an external thread.

[0026] The plug includes a conical plug head 4, the shape of which can better cooperate with the water pipe opening to achieve plugging and sealing. A thread groove 5 is provided in the center of the circular end face of the narrower end of the plug head 4. The thread groove 5 cooperates with the external thread of the lower half of the straight rod 1, making it easier to insert the plug head 4 into the opening, and the insertion depth is increased by tightening the thread.

[0027] The plug 4 has a corresponding conical cavity 6 within it. A water hole 7 is located at the top of the conical cavity 6. Multiple water holes 7 are arranged around the plug 4 to facilitate adequate water inflow. The top of the cavity communicates with the bottom of the threaded groove 5. The bottom of the cavity is provided with a valve cavity 8 that extends through the end of the plug 4 (away from the threaded groove 5). The valve cavity 8 is conical in shape, with the narrow end connecting to the cavity.

[0028] A coaxial connection seat 9 is provided at the wider end of the plug 4. The valve cavity 8 also passes through the connection seat 9. The connection seat 9 is cylindrical and has external threads. An annular step structure 10 is provided at the location where the plug 4 and the connection seat 9 meet. A plastic pull ring 11 is movably sleeved on the connection seat 9. The inner diameter of the pull ring 11 is adapted to the outer diameter of the connection seat 9. Thus, the inner ring of the pull ring 11 is loosely fitted with the connection seat 9, allowing for convenient replacement and flexible use. The pull ring 11 cooperates with the step structure 10 to limit the lower end position of the pull ring 11. A pull belt 12 and a toothed belt 13 are fixed to both sides of the pull ring 11, respectively. The pull belt 12 and the toothed belt 13 can be made of plastic belts or rubber belts. A snap ring 14 is provided at the end of the pull belt 12. The outer side of the toothed belt 13 is provided with wedge-shaped protruding teeth, which cooperate with the snap ring 14 to achieve tightening.

[0029] Based on the above structure, the following steps are taken during installation:

[0030] Insert the elastic ring 2 into the opening of the pipe by deforming it, then insert the plug 4 into the opening and make the thread groove 5 screw-fit with the straight rod 1; or screw the straight rod 1 slightly into the thread groove 5 of the plug 4 and insert the preliminarily assembled elastic ring 2 into the opening;

[0031] Gradually tighten the plug 4 onto the straight rod 1 until the plug 4 is tightly plugged at the opening. The top of the plug 4 pushes the bottom of the elastic ring 2 upward, so that the elastic ring 2 is supported in the tube. Regardless of the direction of the elastic ring 2, it can provide flexible and arc-shaped support to the top of the tube wall.

[0032] Insert the pull ring 11 into the connecting seat 9, wrap the pull belt 12 and toothed belt 13 around the water pipe on both sides of the pipe, insert the top of the toothed belt 13 into the clamping ring 14 and tighten it, firmly locking the plug 4 in the opening position. The internal elastic ring 2 supports it and can resist deformation of the water pipe to a certain extent, thereby effectively maintaining the plugging effect between the plug 4 and the opening. After the pull belt 12 and toothed belt 13 are tightened, the plug 4 and toothed belt 13 can be repeatedly adjusted to improve the sealing effect.

[0033] A cap seat 15 is threadedly connected to the connecting seat 9. The top surface of the cap seat 15 is provided with a cap opening threadedly connected to the connecting seat 9. A disc-shaped water distribution cavity 16 is provided at the bottom of the cap opening. A raised conical valve core 17 is provided in the center of the water distribution cavity 16. The valve core 17 cooperates with the valve cavity 8. When the cap seat 15 is tightened on the connecting seat 9, the valve core 17 blocks the valve cavity 8 to achieve closed flow. When the cap seat 15 is loosened downward, flow is achieved. The water flow can be appropriately adjusted by the degree of loosening.

[0034] An annular groove is provided at the bottom of the valve core 17 , in which a sealing ring 18 is fixed. The sealing ring 18 strengthens the sealing of the connection when the valve core 17 and the valve cavity 8 are blocked.

[0035] The cap seat 15 is provided with eight water outlet holes 19 on its circumference, which are in communication with the water distribution cavity 16 . The water outlet holes 19 can evenly distribute the irrigation water.

[0036] When it is necessary to concentrate drip irrigation on a certain area, a cap 20 can also be used. The inner cavity of the cap 20 is adapted to the circular cap seat 15. The top side of the cap 20 is provided with a circle of wedge-shaped clamps 21 that cooperate with the edge of the cap seat 15. The cap 20 is provided with an arc hole 22 corresponding to the water outlet hole 19. The arc hole 22 can accommodate some of the water outlet holes 19. It is recommended to accommodate 3 water outlet holes 19, and an arc sealing gasket 23 is provided on the inner wall of the cap 20. The sealing gasket 23 is located at the water outlet hole 19 and is used to block other water outlet holes 19 that cannot be exposed at the arc hole 22. Through the above structure, the cap 20 can be used flexibly. When drip irrigation is required only on a certain side, there is no need to replace the dripper. Just put on the cap 20 and rotate the arc hole 22 to the area where drip irrigation is required. It is very convenient and flexible.

Claims

1. A new type of polyethylene drip irrigation pipe dripper, characterized in that: It includes a support member and a plug member, the support member includes a straight rod and an elastic ring, one end of the straight rod is fixed to the top of the inner wall of the elastic ring, the bottom of the elastic ring is provided with a through hole penetrated by the straight rod, the plug member includes a conical plug head, a thread groove is provided in the center of the circular end surface of the narrower end of the plug head for threaded connection with the straight rod, the interior of the plug head is provided with a conical cavity adapted thereto, the upper part of the conical cavity is provided with a water-permeable hole penetrating the side wall, and the bottom end of the cavity is provided with a valve cavity penetrating the bottom end of the plug head.

2. A novel polyethylene dripper for drip irrigation pipe according to claim 1, characterized in that: The wider end of the plug is provided with a connecting seat coaxial therewith, the valve cavity passes through the connecting seat, the connecting seat is matched with a cap seat, the connecting seat is threadedly connected to the cap seat, a disc-shaped water distribution cavity is provided in the cap seat, water outlet holes are provided on the circumference or bottom of the water distribution cavity, a raised conical valve core is provided in the center of the water distribution cavity, and the valve cavity is conical and matched with the valve core.

3. The novel polyethylene dripper for drip irrigation pipe according to claim 1, characterized in that: The wider end of the plug is provided with a connecting seat coaxial with the same, the valve cavity passes through the connecting seat, and an annular step structure is provided between the connecting seat and the end face of the wide end of the plug. A pull ring that cannot pass through the step structure is sleeved on the connecting seat, and the inner diameter of the pull ring is adapted to the outer diameter of the connecting seat. A pull belt and a toothed belt are fixed on both sides of the pull ring, and the ends of the pull belt and the toothed belt can be tightened and connected.

4. A novel polyethylene dripper for drip irrigation pipe according to claim 3, characterized in that: A clamping ring is provided at the end of the pull belt, and a wedge-shaped convex tooth is provided on the outer side of the toothed belt. The wedge-shaped convex tooth cooperates with the clamping ring to lock.

5. The novel polyethylene dripper for drip irrigation pipe according to claim 2, characterized in that: The number of the water outlet holes is 6 to 12 and they are distributed in a ring shape on the peripheral side wall of the cap seat.

6. A novel polyethylene dripper for drip irrigation pipe according to claim 5, characterized in that: A corresponding sleeve cap is movably inserted on the outside of the cap seat, and an arc-shaped hole is provided on the side wall of the sleeve cap corresponding to the water outlet position. The arc-shaped hole can expose part of the water outlet, and an arc-shaped sealing gasket is provided on the inner wall of the sleeve cap. The sealing gasket is located at the water outlet position and can cover other water outlet holes that are not located at the arc-shaped hole.

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