Durable and stable type anti-blocking micro spray head

Abstract

The utility model discloses a durable and stable anti-blocking micro spray head. The stability and the self-cleaning capacity of the micro spray head are improved through precise structural design. The key point is that the metal rod, the nozzle rotor and the metal ball are mutually matched, the metal rod is fixed on the frame, and the tail end of the metal rod is in contact with the metal ball arranged in a shaft cavity of the nozzle rotor to form movable connection. The design of the semi-arc grooves and the open grooves allows the metal balls to rotate freely within a limited range, meanwhile, it is ensured that water flow is smooth, impurity particles are effectively guided to be discharged through the bottom end channel holes, and the blocking risk is reduced. And during inverted installation, the assembly moves along the axis along with the change of water flow, so that impurity discharge is further promoted, and smooth operation and high reliability in long-term use are ensured. According to the design, by means of exquisite gap control and material selection, the dual purposes of efficient anti-blocking and long service life are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of irrigation sprinkler heads, and mainly relates to the structural design of a micro sprinkler head, in particular to a durable, stable, and anti-clogging micro sprinkler head. Background Art

[0002] Micro-sprinklers are a key component of modern water-saving irrigation technology. They produce fine droplets or form mist sprays, enabling efficient and precise water delivery to crops. This irrigation method not only significantly conserves water resources but also ensures that crops across every inch of land receive the appropriate amount of water, promoting healthy growth. Micro-sprinklers are ideal for precise irrigation in a wide range of applications, from enclosed greenhouses to open orchards, landscape gardens, and even delicate flower cultivation sites. Micro-sprinkler technology has also facilitated the development of fertigation, a modern agricultural practice. By precisely mixing liquid fertilizer with irrigation water and delivering it directly to the crop root zone via a micro-sprinkler system, this method significantly improves fertilizer utilization and reduces nutrient loss and environmental pollution associated with traditional fertilization methods. This method ensures timely nutrient delivery and efficient absorption, boosting both crop yield and quality. However, in practice, micro-sprinklers face a number of challenges, the most common of which is clogging. Impurities in the water source, including silt, organic matter, mineral deposits and other tiny particles, may become the culprit for clogging the fine channels of micro sprinklers. Especially when used for liquid fertilizer spraying, if the solid particles in the fertilizer are not fully dissolved, it is more likely to aggravate the clogging phenomenon. Clogging will not only cause the rotation of the sprinkler to be obstructed or the efficiency to be reduced, but also cause abnormal spraying patterns, such as a narrow spraying range and uneven distribution, which will ultimately affect the uniform water supply to the crops and limit their growth potential. In addition, in the design of traditional micro sprinklers, the continuous friction and wear of the shaft and rotor components is another problem that cannot be ignored. Over time, the wear and tear of these key components will gradually reduce the performance of the sprinkler and shorten its service life, forcing users to frequently replace and maintain it, thereby increasing the economic burden and the complexity of maintenance management. Summary of the Invention

[0003] To address the shortcomings of the above-mentioned prior art, the inventors have designed and improved a new structure that can avoid the problem of shaft clogging that reduces the service life and spray quality of the nozzle. The metal contact design of the metal rotating rod and the metal ball is adopted to further improve the wear resistance and extend the service life. Specifically, the present invention is achieved as follows:

[0004] A durable, stable, anti-clogging micro sprinkler head includes a micro sprinkler head frame, a nozzle mounting seat, a nozzle rotor, and further includes:

[0005] A metal rod, one end of which is mounted on the micro-sprinkler frame and located on the axis of the nozzle mounting seat and facing the nozzle mounting seat, and the other end of which extends into the shaft cavity at the bottom of the nozzle rotor;

[0006] The nozzle rotor has one end sleeved on the water outlet end of the nozzle mounting seat and the other end provided with an axial cavity, the interior of the nozzle rotor not being in communication with the axial cavity;

[0007] A metal ball is movably disposed in the shaft cavity and contacts the end of the metal rod;

[0008] The nozzle mounting seat is connected to the water inlet end, and the water flows into the nozzle rotor through the water outlet end of the nozzle mounting seat, and is ejected along the gap opened by the nozzle rotor, driving the nozzle rotor to rotate. When the nozzle rotor rotates, the metal ball contacts and rotates relative to the metal rod and the shaft cavity.

[0009] Preferably, the metal rod is inserted into and fixedly installed from the end of the micro-spray head frame, and an arc-shaped cavity is provided at the upper end of the shaft cavity. The specifications of the arc-shaped cavity are adapted to the metal ball. The metal ball is placed in the arc-shaped cavity and can rotate within the cavity without falling out.

[0010] Preferably, one end of the metal rod is fixedly mounted in the bottom shaft cavity of the nozzle rotor, and the other end extends into the slot in the base along the axial direction; the micro-nozzle frame is also provided with a base in the axial direction opposite to the nozzle mounting seat, the slot is provided on the base along the axial direction, a semi-circular groove is also provided below the slot of the base, the semi-circular groove is placed in the clamping opening of the base, and a channel hole connected to the semi-circular groove is also provided at the bottom of the base; the metal ball is placed in the semi-circular groove, and the metal rod contacts the metal ball in the slot.

[0011] Preferably, the hole spacing of the slot is greater than the rod diameter of the metal rod, so that there is a gap between the metal rod and the slot wall.

[0012] Preferably, the size of the semi-arc groove is larger than the diameter of the metal ball, and the distance between the bottom of the semi-arc groove and the slot is larger than the diameter of the metal ball, so that the metal ball has movable space in the semi-arc groove but is limited so that it will not fall out.

[0013] Preferably, when the anti-clogging micro-sprinkler is installed and used, the water outlet end of the nozzle mounting seat is kept installed in the direction of water outlet upwards; in the static state, the nozzle rotor and the metal rod are in a low position, and the metal ball is also in a low position and does not contact the bottom of the semicircular arc groove, exposing a gap; in the use state, due to the impact of the water flow, the nozzle rotor and the metal rod are lifted up to a high position, and the metal rod lifts the metal ball to a high position.

[0014] The working principle of the present invention is as follows: the micro-sprinkler frame is used to provide a carrier for installing the nozzle mounting seat, one end of the nozzle mounting seat is connected to the water pipe, and the micro-sprinkler frame is used to provide support for installing and limiting the nozzle rotor, and the nozzle rotor docks the water outlet end of the nozzle mounting seat. The metal rod is installed on the micro-sprinkler frame to install the nozzle rotor and limit it. The metal rod is inserted into the nozzle rotor and contacts the metal ball placed in the bottom of the nozzle rotor. When the nozzle rotor rotates, it can limit the rotation on the axis between the ball and the nozzle mounting seat. Since the metal ball has a smaller bearing area when subjected to force, it can provide smaller friction loss, thereby reducing friction and extending the service life of the product. The contact friction between the metal ball and the metal rod is higher in strength because they are both made of metal. Compared with plastic, it has a long service life and less operating wear, so it is stable and reliable to use throughout its life cycle. On the other hand, under this structure, the metal ball is built into the inner side of the bottom of the nozzle rotor, which is well concealed and will not come into contact with the water. Therefore, impurities contained in the water will not enter the shaft cavity and come into contact with the metal ball, and will not be adsorbed on the surface of the metal ball or stuck in the gap between the metal ball and the cavity wall. This can effectively solve the problem of low rotation efficiency of the rotating rod due to the entry of dust and debris. The utility model can also have another structural form, in which the metal rod is fixedly connected to the nozzle rotor and extends into the base at the other end of the micro-sprinkler frame, and the metal ball is also placed in the semi-circular arc groove of the base, which can also achieve the effect of reducing wear and loss and extending service life. Under this structure, due to the size design of the semi-circular arc groove, the metal ball can move slightly within the limited space, forming a gap, which can facilitate the outflow of impurity particles. In particular, a channel hole is also provided at the bottom of the semi-circular arc groove, which can also facilitate the outflow of impurity particles. The design of the gap makes it easy for water and impurities to pass through and flow away, and can also reduce the probability of the rotating rod being stuck. The existence of the gap also facilitates the metal ball to move slightly in the limited space, forming a gap, which can facilitate the outflow of impurity particles. The tumbling rotation inside drives the incoming water to form a flow, which can discharge the incoming dust and impurities to the bottom channel hole; this structure of the micro-spray is also suitable for the situation of water outlet from the top. At this time, the micro-spray is installed upside down. Under this structure, the nozzle rotor and the metal rod and metal ball are designed with activity space, so they will move up and down in the axial direction. When in use, due to the impact of the water flow, they will be in the upper stroke section. When the water flow impact weakens or is closed, the overall structure will move downward to leave gaps. These gaps are usually larger than the particles and impurity particles in the fertilizer liquid, so they can flow out and be washed away through the gaps. In addition, this movable design can also promote impurities and dust, promote their movement and flow away, and avoid getting stuck.

[0015] Beneficial technical effects of the utility model:

[0016] (1) Reduce friction loss and extend service life: The metal-to-metal contact between the metal ball and the metal rod provides high wear resistance and a low friction coefficient. Compared with plastic components, it greatly reduces friction loss during operation and effectively extends the service life of the product. The small contact area of the metal ball further reduces friction resistance, ensuring efficient and stable long-term operation.

[0017] (2) Optimized anti-clogging design improves operational stability: The metal ball is built into the bottom of the nozzle rotor, isolated from the water body, effectively preventing impurities in the water from directly contacting and adhering to the ball surface or getting stuck in the gap between the ball and the cavity wall, thereby avoiding problems such as poor rotation or clogging caused by impurity accumulation. This design significantly improves the self-cleaning ability and anti-clogging performance of the micro sprinkler.

[0018] (3) Structural flexibility and adaptability: In another structure where the ball is externally mounted, the gap between the metal rod and the metal ball is designed so that impurities can be automatically cleared and discharged in the gap under the flow of water. Even when installed upside down, if impurities enter, they can be discharged smoothly due to the existence of the gap, without affecting the rotation of the ball or causing it to get stuck.

[0019] Figures in the specification

[0020] Figure 1 This is a schematic diagram of the structure of a durable and stable anti-clogging micro sprinkler in Example 1 of the present utility model;

[0021] Figure 2 This is an exploded view of the structure of a durable and stable anti-clogging micro sprinkler in Example 1 of the present utility model;

[0022] Figure 3 This is a three-dimensional diagram of a durable and stable anti-clogging micro sprinkler in Example 1 of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of a durable and stable anti-clogging micro sprinkler in Example 2 of the present utility model;

[0024] Figure 5 This is an exploded view of the structure of a durable and stable anti-clogging micro sprinkler in Example 2 of the present utility model;

[0025] Figure 6 This is a three-dimensional diagram of a durable and stable anti-clogging micro sprinkler in Example 2 of the present utility model;

[0026] Figure 7 This is a schematic diagram of the upper water outlet state of a durable and stable anti-clogging micro sprinkler in Example 2 of the present utility model;

[0027] Figure 8 yes Figure 7 A partial enlarged schematic diagram of part A.

[0028] Among them: 1-micro sprinkler frame, 2-nozzle mounting seat, 3-nozzle rotor, 4-metal rod, 5-metal ball, 6-axis cavity, 7-arc-shaped cavity, 8-slot, 9-base, 10-semicircular groove, 11-clamp, 12-gap, 13-channel hole. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0030] Example 1: A durable and stable anti-clogging micro sprinkler, comprising a micro sprinkler frame 1, a nozzle mounting seat 2, and a nozzle rotor 3. The micro sprinkler frame 1 serves as the main frame to carry and install other components, and is integrally formed with the nozzle mounting seat 2. It has a water outlet end and acts as a rotating shaft, so that the nozzle rotor 3 sleeved thereon can rotate. The other end of the nozzle rotor 3 is connected to a metal rod 4. One end of the metal rod 4 is mounted on the micro sprinkler frame 1 and is located on the axis of the nozzle mounting seat 2, facing the nozzle mounting seat 2, and the other end extends into the shaft cavity 6 at the bottom of the nozzle rotor 3; the interior of the nozzle rotor 3 is not connected to the shaft cavity 6; the shaft The cavity 6 is for inserting the metal rod 4, and the metal ball 5 is movably mounted within the axial cavity 6, contacting the rod end of the metal rod 4. The top of the metal rod 4 contacts the bottom of the metal ball 5, forming a position-limiting mounting for the nozzle rotor 3. That is, the nozzle mount 2, nozzle rotor 3, ball, and metal rod 4 are vertically mounted, and the nozzle rotor 3 can rotate along its axis. During use, the nozzle mount 2 is connected to the water inlet end, and water flows through the water outlet end of the nozzle mount 2 into the nozzle rotor 3, and then flows out through the gap formed in the nozzle rotor 3, driving the nozzle rotor 3 to rotate. When the nozzle rotor 3 rotates, the metal ball 5 rotates relative to the metal rod 4 and the axial cavity 6. The metal rod 4 is inserted and fixedly mounted at the end of the micro-sprinkler frame 1. The upper end of the axial cavity 6 is provided with an arc-shaped cavity 7, the specifications of which are compatible with the metal ball 5. The metal ball 5 is placed in the arc-shaped cavity 7 and can rotate within it without falling out. Water enters the nozzle rotor 3 through the outlet of the nozzle mount 2, driving the nozzle rotor 3 to rotate. During this process, the metal ball 5 contacts and rotates with the metal rod 4, reducing friction losses. The metal ball 5 is embedded in the bottom inner side of the nozzle rotor 3, making it well concealed from the water. Therefore, impurities in the water cannot enter the shaft cavity 6 and come into contact with the metal ball 5. Consequently, they cannot be adsorbed on the surface of the metal ball 5 or become lodged in the gap 12 between the metal ball 5 and the cavity wall. This effectively solves the problem of reduced rotational efficiency of the rotating rod due to the ingress of dust and debris.

[0031] Example 2: Compared to Example 1, the structure is improved in some respects. One end of the metal rod 4 is fixedly mounted within the bottom axial cavity 6 of the nozzle rotor 3, while the other end extends axially into the slot 8 within the base 9. The micro-sprinkler frame 1 is further provided with a base 9 on the opposite axial direction from the nozzle mounting base 2. The slot 8 is provided on the base 9 along the axial direction. A semi-circular groove 10 is provided below the slot 8 of the base 9. The semi-circular groove 10 is positioned within a clamping opening 11 formed in the base 9. A channel hole 13 is also provided at the bottom of the base 9, connecting to the semi-circular groove 10. The metal ball 5 is positioned within the semi-circular groove 10, and the metal rod 4 contacts the metal ball 5 within the slot 8. In this structure, the metal ball 5 is not positioned within the nozzle rotor 3, but rather externally positioned at the other end of the metal rod 4. The metal rod 4 is integrally fixed to the nozzle rotor 3. The two can be fixed by adhesive bonding, or the metal rod 4 can be prefabricated and fixed within the nozzle rotor 3 during production, or can be installed later. The hole spacing of the slot 8 is greater than the rod diameter of the metal rod 4, so that there is a gap 12 between the metal rod 4 and the groove wall of the slot 8; the size of the semicircular arc groove 10 is greater than the diameter of the metal ball 5, and the distance between the bottom of the semicircular arc groove 10 and the slot 8 is greater than the diameter of the metal ball 5, so that the metal ball 5 has movable space in the semicircular arc groove 10 but is limited so that it will not fall out. The size design of the semicircular groove 10 enables the metal ball 5 to move slightly within the limited space, forming a gap 12, which is conducive to the outflow of foreign particles, especially the channel hole 13 is also provided at the bottom of the semicircular groove 10, which is also conducive to the outflow of foreign particles. The design of the gap 12 makes it easy for water and impurities to pass through and flow away smoothly, and can also reduce the probability of the rotating rod being stuck. The existence of the gap 12 also facilitates the tumbling rotation of the metal ball 5 to drive the incoming water to form a flow, which can discharge the incoming dust and impurities to the bottom channel hole 13; when the anti-clogging micro-sprinkler is installed and used, the water outlet end of the nozzle mounting seat 2 is kept installed in the direction of water outlet upward; in the static state, the nozzle rotor 3 and the metal rod 4 are in a low position, and the metal ball 5 is also in a low position and does not contact the bottom of the semicircular groove 10, exposing the gap 12; in the use state, due to the impact of the water flow, the nozzle rotor 3 and the metal rod 4 are lifted up to a high position, and the metal rod 4 lifts the metal ball 5 to a high position. The micro-sprayer with this structure is also suitable for the situation of water discharge from the top. In this case, the micro-sprayer is installed inverted. Under this structure, the nozzle rotor 3, the metal rod 4 and the metal ball 5 are designed with movable space, so they will move up and down in the axial direction. When in use, due to the impact of the water flow, they will be in the upper stroke section. When the impact of the water flow is weakened or closed, the overall structure will move downward to leave a gap 12. These gaps 12 are usually larger than the particles and impurity particles in the fertilizer liquid, so they can flow out and be washed away through the gap. In addition, this movable design can also promote impurities and dust, promote their movement and flow away, and avoid getting stuck.In this installation configuration, the nozzle rotor 3, metal rod 4, and metal ball 5 have room for movement, allowing them to rise and fall vertically. During operation, the impact of the water flow causes the entire assembly to move upward. When the water flow weakens or stops, the assembly naturally drops downward, creating gaps 12 significantly larger than typical fertilizer particles or impurities, ensuring they can pass through these spaces and be flushed out without obstruction. This dynamic design also helps dislodge accumulated impurities and dust, effectively preventing clogging.

[0032] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. A durable and stable anti-clogging micro sprinkler, comprising a micro sprinkler frame (1), a nozzle mounting seat (2), and a nozzle rotor (3), characterized in that Also includes: A metal rod (4), one end of which is mounted on the micro-spray head frame (1) and is located on the axis of the nozzle mounting seat (2) and faces the nozzle mounting seat (2), and the other end of which extends into the shaft cavity (6) at the bottom of the nozzle rotor (3); A nozzle rotor (3) has one end sleeved on the water outlet end of the nozzle mounting seat (2) and the other end is provided with an axial cavity (6), wherein the interior of the nozzle rotor (3) is not in communication with the axial cavity (6); A metal ball (5) is movably arranged in the shaft cavity (6) and contacts the end of the metal rod (4); The nozzle mounting seat (2) is connected to the water inlet end, and water flows into the nozzle rotor (3) through the water outlet end of the nozzle mounting seat (2), and is ejected along the gap formed in the nozzle rotor (3), thereby driving the nozzle rotor (3) to rotate. When the nozzle rotor (3) rotates, the metal ball (5) contacts and rotates relative to the metal rod (4) and the shaft cavity (6).

2. The anti-clogging micro sprinkler according to claim 1, characterized in that: The metal rod (4) is inserted from the end of the micro-spray head frame (1) and fixedly installed. A circular arc cavity (7) is provided at the upper end of the shaft cavity (6). The specifications of the circular arc cavity (7) are adapted to the metal ball (5). The metal ball (5) is placed in the circular arc cavity (7) and can rotate within the circular arc cavity without falling out.

3. The anti-clogging micro sprinkler according to claim 1 or 2, characterized in that: The metal rod (4) is modified so that one end is fixedly mounted in the bottom shaft cavity (6) of the nozzle rotor (3), and the other end extends along the axial direction into the slot (8) in the base (9); The micro-sprinkler frame (1) is further provided with a base (9) in an axial direction opposite to the nozzle mounting seat (2); the base (9) is provided with the slot (8) along the axial direction; a semi-circular groove (10) is further provided below the slot (8) of the base (9); the semi-circular groove (10) is placed in a clamping opening (11) provided on the base (9); and a channel hole (13) connected to the semi-circular groove (10) is further provided at the bottom of the base (9); The metal ball (5) is placed in the semicircular arc groove (10), and the metal rod (4) is in contact with the metal ball (5) in the slot (8).

4. The anti-clogging micro sprinkler according to claim 3, characterized in that: The hole spacing of the slot (8) is greater than the rod diameter of the metal rod (4), so that a gap (12) exists between the metal rod (4) and the slot wall of the slot (8).

5. The anti-clogging micro sprinkler according to claim 4, characterized in that: The size of the semicircular arc groove (10) is larger than the diameter of the metal ball (5), and the distance between the bottom of the semicircular arc groove (10) and the slot (8) is larger than the diameter of the metal ball (5), so that the metal ball (5) has a movable space in the semicircular arc groove (10) but is limited so that it will not fall out.

6. The anti-clogging micro sprinkler according to claim 5, characterized in that: When the anti-clogging micro-sprinkler is installed and used, the water outlet end of the nozzle mounting seat (2) is kept installed in the direction of water outlet upward; in a static state, the nozzle rotor (3) and the metal rod (4) are in a low position, and the metal ball (5) is also in a low position and does not contact the bottom of the semicircular arc groove (10), exposing a gap (12); in a use state, due to the impact of water flow, the nozzle rotor (3) and the metal rod (4) are lifted up and placed in a high position, and the metal rod (4) lifts the metal ball (5) to be in a high position.

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