Dripper for ensuring fullness of drip irrigation pipe

Abstract

This utility model discloses a dripper that ensures a full drip irrigation pipe, comprising an upper part with an inlet pipe, a lower part with an outlet pipe, and an elastic core ball; the inlet pipe is located on the top surface of the upper part, and a connecting cylinder is located on the bottom surface of the upper part. The bottom surface of the connecting cylinder has an upper concave spherical surface, and the inlet pipe is connected to the top surface of the upper concave spherical surface; the top surface of the lower part has a connecting round countersunk that matches the connecting cylinder, and the bottom surface of the connecting round countersunk has a lower concave spherical surface. A bottom cylinder is located at the center of the bottom surface of the lower concave spherical surface, and a circular concave transition cavity is formed between the lower concave spherical surface and the bottom cylinder. Multiple channels A connected to the transition cavity are provided on the lower concave spherical surface; the outlet pipe is located on the bottom surface of the lower part, and the outlet pipe is connected to the top surface of the bottom cylinder. Multiple channels B connected to the inner wall of the outlet pipe and the outer wall of the bottom cylinder are radially provided on the top surface of the bottom cylinder; the elastic core ball is pressed between the upper and lower concave spherical surfaces. It can quickly stop leaks and ensure better uniformity of drip irrigation.

Description

Technical Field

[0001] This utility model relates to drip irrigation technology, and specifically to a dripper that ensures the drip irrigation pipe is full of water. Background Technology

[0002] Although existing drip irrigation emitters come in various specific forms, their basic structure generally includes two types: one type includes an upper part with an inlet pipe, a lower part with an outlet pipe, and a core component for regulating the drip irrigation water flow; the other type includes an upper part with an inlet pipe, a lower part with an outlet pipe, and a water channel for regulating the drip irrigation water flow is provided in the inner cavity of the upper part, the inner cavity of the lower part, or both.

[0003] For example, Chinese patent CN218690557U, entitled "An Agricultural Fruit and Vegetable Drip Irrigation Sprinkler," discloses an agricultural fruit and vegetable drip irrigation sprinkler, including a disc-shaped drip irrigation head with a disc-shaped cavity inside. Several drip irrigation square holes communicating with the interior are evenly arranged on the arc-shaped sidewall of the disc-shaped drip irrigation head. An insertion section is divided into a rigid circular tube section and a rigid conical tube section. The insertion section is fixedly connected to and communicates with the disc-shaped drip irrigation head. A frustum-shaped limiting block is fixedly fitted at the end of the rigid circular tube section away from the disc-shaped drip irrigation head. A first cylindrical screen is provided inside the disc-shaped drip irrigation head corresponding to the insertion section. A second cylindrical screen is fitted over the first cylindrical screen. The length of the first cylindrical screen is shorter than that of the second cylindrical screen. The lower end of the first cylindrical screen is sealed and fixedly connected to the second cylindrical screen through an annular plate. A sealing plug is threaded onto the annular plate, and a pressure indicator component is provided on the sealing plug. This invention is easy to use, has a filtering function, facilitates the cleaning of filtered debris, and ensures that drip irrigation is not affected by blockages.

[0004] For example, Chinese patent CN219664041U, entitled "A Self-Closing Anti-Clogging Drip Irrigation Sprinkler," discloses a self-closing anti-clogging drip irrigation sprinkler, including a receiving sprinkler frame. The upper end of the receiving sprinkler frame is fitted with a drip irrigation sprinkler. The upper edge of the drip irrigation sprinkler has a spray hole. The upper end of the receiving sprinkler frame, directly below the spray hole, is also provided with a stop for filling the spray hole. A support frame is coaxially provided inside the receiving sprinkler frame. The upper end of the support frame is provided with a guide component for moving the drip irrigation sprinkler up and down. By installing a drip irrigation nozzle that can move up and down at the upper end of the receiving nozzle frame, and installing a stop block at the upper end of the receiving nozzle frame to fill the spray hole, when the drip irrigation nozzle is not working, the drip irrigation nozzle can move down by its own weight, so that the stop block is located inside the spray hole, thereby closing the spray hole and preventing external dust and other debris from covering the spray hole or entering the receiving nozzle frame.

[0005] Droppers using this technology can certainly be used, but their shortcomings are:

[0006] Because drippers are installed in the field through multiple distributed water pipes, the main water valve sometimes needs to be closed depending on the weather conditions. Since drippers are usually made of relatively inexpensive plastic parts with limited processing precision and relatively poor sealing, the fertilizer water remaining in the pipes will still leak from the drippers after the main water valve is closed. The leakage amount of each dripper is different, which causes uneven drip irrigation and affects the quality of crops. When fertilizer water needs to be applied again, the main water valve is opened. Because the pipes are hollow after leakage, the impact force of the fertilizer water flow is very large, and the relatively fragile drippers are easily washed off.

[0007] The performance of existing drippers is not ideal. Utility Model Content

[0008] To overcome the shortcomings of the existing technology, this utility model provides a dripper that can quickly seal and stop after the main water valve is closed, ensuring that the drip irrigation pipe is full of water.

[0009] The technical solution adopted by this utility model to achieve the above-mentioned technical objectives is as follows: a dripper that ensures the drip irrigation pipe is full of water, comprising an upper part with an inlet pipe, a lower part with an outlet pipe, and a core component for regulating the drip irrigation water flow rate, wherein the core component is an elastic core ball; the upper part is circular in shape, the inlet pipe is located on the top surface of the upper part, the bottom surface of the upper part has a connecting cylinder, the bottom surface of the connecting cylinder has an upper concave spherical surface, and the inlet pipe communicates with the top surface of the upper concave spherical surface; the lower part is circular in shape, and the top surface of the lower part has a surface that connects with the connecting cylinder. The fitting connecting round countersunk has a lower concave spherical surface on its bottom surface. A bottom cylinder is located at the center of the bottom surface of the lower concave spherical surface. A circular concave transition cavity is opened between the lower concave spherical surface and the bottom cylinder. Multiple water channels A are opened on the lower concave spherical surface, which communicate with the transition cavity. The water outlet pipe is located on the bottom surface of the lower part and is connected to the top surface of the bottom cylinder. Multiple water channels B are provided radially on the top surface of the bottom cylinder, which communicate with the inner wall of the water outlet pipe and the outer wall of the bottom cylinder. An elastic core ball is pressed between the upper and lower concave spherical surfaces.

[0010] The elastic core ball is a rubber ball; the upper mold and the lower mold are injection molded parts.

[0011] The top surface of the bottom cylinder is a concave arc surface, and the bottom center of the elastic core ball is pressed onto this concave arc surface.

[0012] The upper molded part has upper teeth around its circular edge, and a slit B is provided radially at one point around its circumference. A slit A is provided from one side of the bottom edge of the slit B. A locking block is provided on the bottom surface of the circular piece at the junction of the slit A and the slit B. The lower molded part has lower teeth around its circumference. After the drip head is assembled, the locking block is positioned and engaged with the corresponding tooth gap of the lower teeth.

[0013] The beneficial effects of this utility model are:

[0014] Since the core component is an elastic core ball 3, after the main water valve is closed, the elastic core ball 3 can use its own restoring elasticity to seal the water inlet pipe 8, which overcomes the leakage caused by insufficient processing precision of the injection molded part and prevents excessive impact force when the main water valve is reopened.

[0015] Because of the transition cavity 15, when the residual liquid in the drip irrigation nozzle is about to drip, it will be pulled back by the negative pressure tendency formed in the transition cavity 15, which can quickly stop the drip irrigation and make the uniformity of drip irrigation better. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. Wherein:

[0017] Figure 1 This is a breakdown diagram of the present invention;

[0018] Figure 2 This is a split view of the present invention from another perspective;

[0019] Figure 3 This is a schematic diagram of part 1 of the upper part in this utility model;

[0020] Figure 4 This is a schematic diagram of the lower part 2 in this utility model;

[0021] Figure 5 This is a schematic cross-sectional view of the present invention;

[0022] Figure 6 This is a top view of the lower two parts of this utility model;

[0023] Figure 7 This is a cross-sectional schematic diagram of the lower part 2 in this utility model.

[0024] The markings in the attached diagram are explained as follows: Upper part 1, Lower part 2, Elastic core ball 3, Upper tooth 4, A-type slit 5, Upper semi-concave spherical surface 6, Connecting cylinder 7, Inlet pipe 8, B-type slit 9, Locking block 10, Outlet pipe 11, Connecting round countersunk 12, Lower tooth 13, Lower semi-concave spherical surface 14, Transition cavity 15, A-type water channel 16, B-type water channel 17, Bottom cylinder 18. Detailed Implementation

[0025] Embodiments of this utility model, such as Figures 1 to 7As shown, a dripper that ensures the drip irrigation pipe is full of water includes an upper part 1 with an inlet pipe 8, a lower part 2 with an outlet pipe 11, and a core component for regulating the drip irrigation water flow. The core component is an elastic core ball 3. The upper part 1 is circular, with the inlet pipe 8 located on its top surface. The bottom surface of the upper part 1 has a connecting cylinder 7, and the bottom surface of the connecting cylinder 7 has an upper concave spherical surface 6. The inlet pipe 8 communicates with the top surface of the upper concave spherical surface 6. The lower part 2 is circular, with a connecting countersunk hole 12 on its top surface that matches the connecting cylinder 7. The bottom surface of the connecting countersunk hole 12 has a... The lower concave spherical surface 14 has a bottom cylinder 18 at the center of its bottom surface. A circular concave transition cavity 15 is formed between the lower concave spherical surface 14 and the bottom cylinder 18. Multiple water channels 16 connected to the transition cavity 15 are formed on the lower concave spherical surface 14. A water outlet pipe 11 is located on the bottom surface of the lower part 2 and is connected to the top surface of the bottom cylinder 18. Multiple water channels 17 connected to the inner wall of the water outlet pipe 11 and the outer wall of the bottom cylinder 18 are formed radially on the top surface of the bottom cylinder 18. An elastic core ball 3 is pressed between the upper concave spherical surface 6 and the lower concave spherical surface 14.

[0026] The elastic core ball 3 is a rubber ball; the upper molded part 1 and the lower molded part 2 are injection molded parts.

[0027] The top surface of the bottom cylinder 18 is a concave arc surface, and the bottom center of the elastic core ball 3 is pressed onto this concave arc surface.

[0028] The upper molded part 1 has upper teeth 4 around its circular edge, and a second slit 9 is provided radially at one point around its circumference. An upper slit 5 is provided from one side of the bottom edge of the second slit 9. A locking block 10 is provided on the bottom surface of the circular piece at the junction of the first slit 5 and the second slit 9. The lower molded part 2 has lower teeth 13 around its circumference. After the drip head is assembled, the locking block 10 is positioned and locked into the corresponding tooth gap of the lower teeth 13.

[0029] The working principle of this utility model:

[0030] A. During drip irrigation, the main water valve is opened, and the fertilizer and water pressure in the distribution pipe forces the elastic core ball 3 to deform. The fertilizer and water flow sequentially through the inlet pipe 8, the gap between the surface of the elastic core ball 3 and the upper concave spherical surface 6, water channel A 16, water channel B 17, and the outlet pipe 11, dripping down.

[0031] B. When irrigation stops, the main water valve closes, the elastic core ball 3 deforms and returns to its original position, and the elastic core ball 3 seals tightly with the upper concave spherical surface 6. This prevents the fertilizer solution in the distribution pipe from leaking through the drippers, overcoming leakage caused by insufficient machining precision and preventing excessive impact force when the main water valve is reopened. Simultaneously, due to the transition cavity 15, any residual fertilizer solution in the drip irrigation head is promptly stopped by the negative pressure tendency created within the transition cavity 15 when it is about to drip, resulting in rapid stopping and better uniformity of drip irrigation.

[0032] Further description of this utility model:

[0033] The adjustable flow rate setting of the card block 10 allows the same product to be flexibly applied to crops with different drip irrigation needs, reducing the total production cost of batch drippers.

[0034] The sealing connection between the upper part 1 and the lower part 2 can be a spiral plus sealing ring type sealing connection, or it can be a sealing connection method such as ultrasonic welding.

[0035] As a technical alternative, the elastic core ball 3 can also be replaced by an elastomer with other geometric shapes. At the same time, the inner cavities of the upper mold 1 and the lower mold 2 should also be adapted accordingly.

Claims

1. A dripper that ensures a full drip irrigation pipe, comprising an upper part with an inlet pipe, a lower part with an outlet pipe, and a core component for regulating the drip irrigation water flow rate, characterized in that: The core component is an elastic core ball; the upper molded component is circular, with an inlet pipe on its top surface and a connecting cylinder on its bottom surface. The bottom surface of the connecting cylinder has an upper concave spherical surface, and the inlet pipe is connected to the top surface of the upper concave spherical surface; the lower molded component is circular, with a connecting countersunk end on its top surface that matches the connecting cylinder. The bottom surface of the connecting countersunk end has a lower concave spherical surface, and a bottom cylinder is located at the center of the bottom surface of the lower concave spherical surface. A circular concave transition cavity is formed between the lower concave spherical surface and the bottom cylinder. Multiple water channels A connected to the transition cavity are formed on the lower concave spherical surface. The outlet pipe is located on the bottom surface of the lower molded component and is connected to the top surface of the bottom cylinder. Multiple water channels B connected to the inner wall of the outlet pipe and the outer wall of the bottom cylinder are radially formed on the top surface of the bottom cylinder; the elastic core ball is pressed between the upper and lower concave spherical surfaces.

2. An emitter according to claim 1, characterized in that: The elastic core ball is a rubber ball; the upper mold and the lower mold are injection molded parts.

3. An emitter according to claim 2, characterized in that: The top surface of the bottom cylinder is a concave arc surface, and the bottom center of the elastic core ball is pressed onto this concave arc surface.

4. An emitter according to claim 3, characterized in that: The upper molded part has upper teeth around its circular edge, and a slit B is provided radially at one point around its circumference. A slit A is provided from one side of the bottom edge of the slit B. A locking block is provided on the bottom surface of the circular piece at the junction of the slit A and the slit B. The lower molded part has lower teeth around its circumference. After the drip head is assembled, the locking block is positioned and engaged with the corresponding tooth gap of the lower teeth.

Images