Anti-deposition pipe fitting

Abstract

The utility model relates to the technical field of agricultural irrigation pipe fittings, more particularly to a pipe fitting of preventing deposition, which comprises a pipe body, the pipe body is divided into a reduced diameter section and water inlet flared sections and water outlet flared sections located at both ends of the reduced diameter section, one end of the reduced diameter section close to the water inlet flared section is provided with a partition net, the partition net comprises a plurality of spoke ribs arranged in a circumferential interval, the spoke ribs are fixedly connected with the inner wall of the reduced diameter section, the adjacent spoke ribs form a hollow part, the partition net is conical, the conical tip of the partition net points to one side of the water inlet flared section, a plurality of spiral flow guide parts are arranged on the inner wall of the reduced diameter section, the pitch between adjacent spiral flow guide parts changes from large to small along the direction from the water inlet flared section to the water outlet flared section. The utility model can avoid the deposition of impurities in the pipe fitting to block the pipe fitting.

Description

Technical Field

[0001] This utility model relates to the field of agricultural irrigation pipe fittings technology, and more specifically, to a pipe fitting for preventing sedimentation. Background Technology

[0002] Agricultural pipe fittings are crucial core components in building efficient irrigation networks in the agricultural irrigation field. In engineering applications, agricultural irrigation water typically contains a significant amount of suspended particles, silt, and organic matter, and the irrigation water flow often exhibits noticeable fluctuations in speed depending on water demand. These characteristics raise two key issues: when the water flow velocity is low, larger impurities in the water easily settle and accumulate on the pipe wall surface, forming a sediment layer; more challengingly, when the water flow velocity needs to be increased to flush the pipe wall due to scheduling requirements, the simple, straight-in-straight-out, uniformly smooth internal cavity design of most existing pipe fittings fails to provide an effective fluid guidance mechanism. This type of structure lacks specific fluid pattern control capabilities, resulting in the overall flow pattern remaining predominantly laminar or weakly turbulent even with increased velocity, lacking sufficient disturbance energy to the boundary layer close to the pipe wall. Consequently, the core kinetic energy of the water flow cannot be efficiently transferred to the pipe wall area, failing to generate the necessary strong shear force and local vortices to effectively strip away and carry away the settled impurities. What is particularly disadvantageous is that if these deposits are not removed in time, they will gradually adhere to, compact, or even stick to the pipe wall under long-term physical and chemical action, significantly increasing their adhesion. Even if the flow rate is increased later, it will be more difficult to flush them clean, eventually leading to a reduction in the inner diameter of the pipe fittings, an increase in water flow resistance, a decrease in water delivery efficiency, or even local blockage, which seriously restricts the effectiveness of the irrigation system and increases maintenance costs. Utility Model Content

[0003] The purpose of this invention is to overcome the problem of insufficient self-cleaning ability of existing agricultural pipe fittings under conditions of impurities in water and fluctuations in flow rate. It provides a pipe fitting that prevents sedimentation, can actively optimize the fluid dynamics inside the pipe cavity, enhance the flushing effect of water flow on the pipe wall during operation, and effectively prevent impurities from depositing inside the pipe fitting and clogging it.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A pipe fitting for preventing sedimentation is provided, comprising a pipe body divided into a reduced diameter section and an inlet flared section and an outlet flared section located at both ends of the reduced diameter section. A dividing mesh is provided at one end of the reduced diameter section near the inlet flared section. The dividing mesh includes a plurality of circumferentially spaced spokes, which are fixedly connected to the inner wall of the reduced diameter section. A hollow portion is formed between adjacent spokes. The dividing mesh is conical, with the conical tip pointing towards the inlet flared section. A plurality of spiral guide sections are provided on the inner wall of the reduced diameter section, and the pitch between adjacent spiral guide sections decreases from large to small along the direction from the inlet flared section to the outlet flared section.

[0005] In the above-described process, water enters from the flared inlet section and flows over the conical surface. The conical surface forces the water to diverge radially, giving it initial angular momentum. The water is then forcibly divided by circumferentially spaced spokes and flows through the hollow section. Upon entering the narrowing section, due to the difference in flow velocity and the conservation of angular momentum (resulting from pipe diameter reduction, increased flow velocity, and decreased pressure), the water spontaneously converges and intensifies into an organized initial vortex. The gradually decreasing pitch design of the spiral guide section on the inner wall of the narrowing section (the pitch gradually decreases along the water flow direction) applies progressive constraints to the vortex. Due to the wall-hanging effect (also known as the Coanda effect), the initial large-pitch section guides the vortex to develop smoothly. As the pitch decreases, the water's rotation radius is continuously compressed, and the tangential velocity increases sharply, ultimately forming a high-intensity spiral turbulence. The centrifugal force generated by the high-speed rotation of the spiral turbulence throws impurities radially toward the pipe wall. The strong shear force between the fluid and the pipe wall directly strips away sediment, and the dynamic vortex carries impurities to prevent settling. When water carrying impurities enters the flared outlet section, the expansion of the pipe diameter causes a decrease in flow velocity and a rise in pressure. The strong vortex already formed maintains its rotational energy due to inertia (similar to the vortex principle in a toilet flushing system). During the diffusion process, impurities continuously detach from the pipe wall under the action of centrifugal force and fluid drag, and are stably transported to the outlet by the vortex core. The hydrodynamic form of the vortex effectively enhances the flushing effect of the water flow on the pipe wall, effectively preventing impurities from depositing inside the pipe and clogging it.

[0006] Furthermore, the dividing net also includes a conical disk, which is located at the center of the dividing net and fixedly connected to several of the spoke ribs; the conical tip of the dividing net adopts a disk-shaped conical structure, which increases the contact area between the conical tip and the water flow, and can give the water flow a stable rotational angular momentum in the initial stage.

[0007] Furthermore, the thickness of the spoke reinforcement gradually increases along the radial direction of the tube body; the thickness is greatest at the point where the spoke reinforcement connects to the tube wall of the reduced diameter section, thus preventing stress concentration at the connection point of the spoke reinforcement from causing breakage.

[0008] Furthermore, four to six spokes are provided, and the included angle between adjacent spokes is between 60° and 90°. The main function of the spokes is to divide the water flow. The four spokes are provided with an included angle of 90° between adjacent spokes to divide one water flow into four water flows, making the rotation of the water flow more stable in the initial stage.

[0009] Furthermore, it also includes a barrier net, which is slidably connected to the inner wall of the inlet flare section. The barrier net acts as a barrier in the inlet flare section, and its main function is to capture larger solid impurities (such as stones, dead branches, plastic fragments, etc.) in the water, preventing these coarse particles from flowing into the narrowing section and clogging the narrowing section with a smaller diameter. At the same time, it avoids large particles from impacting or clogging the spokes and hollow parts of the dividing net, ensuring the fluid guiding function of the dividing net.

[0010] Furthermore, it also includes a damping connection part, the inner wall of the water inlet flared section is provided with a sliding groove, the damping connection part is slidably connected to the sliding groove, and the barrier net is fixedly connected to the damping connection part; the damping connection part constructs a buffer connection system for the barrier net, improving the applicability of the pipe fitting under complex working conditions.

[0011] Furthermore, the damping connection includes an elastic element and a slider. The edge of the barrier net is fixedly connected to the slider, and the slider is slidably connected to the groove. The elastic element is connected to both sides of the slider, and the other end of the elastic element is fixedly connected to the side wall of the groove. The damping connection, through the slider and groove structure and the elastic element, constructs a buffer system. When the water flow suddenly increases, the impact energy is converted into elastic potential energy by the slider compressing the elastic element, avoiding rigid collisions. The damping properties of the elastic element effectively absorb the mechanical vibration caused by water flow fluctuations. When the impact force exceeds the threshold, the groove limiting structure can prevent the barrier net from dislodging and being damaged.

[0012] Furthermore, the outer wall of the water inlet flared section is provided with a thickening protrusion, which is located on the outer wall corresponding to the location of the chute. Since the inner wall of the water inlet flared section has a chute, the strength of the pipe wall will decrease. Therefore, a thickening protrusion is provided on the outer wall corresponding to the location of the chute to increase the thickness of the pipe wall at that location and restore the compressive strength of the pipe wall.

[0013] Furthermore, the outlet flared section is equipped with an anti-backflow device. Since the pitch between the spiral guides decreases from large to small along the direction from the inlet flared section to the outlet flared section, and the conical tip of the dividing mesh points towards the inlet flared section, the reverse flow of water cannot effectively change the fluid flow pattern or achieve the effect of creating a vortex. Therefore, an anti-backflow device is installed to remind workers to install correctly and to prevent the pipe fittings from being used in reverse.

[0014] Furthermore, both the inlet flared section and the outlet flared section have internal threads on their inner walls near the socket. The internal threads of both the inlet flared section and the outlet flared section are used to connect to external pipes, thus achieving the basic function of normal connection.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. A dividing mesh is installed at one end of the reduced diameter section near the inlet flared section. The dividing mesh includes several circumferentially spaced spokes, which are fixedly connected to the inner wall of the reduced diameter section. Hollow sections are formed between adjacent spokes. The dividing mesh is conical, with its pointed tip pointing towards the inlet flared section. Several spiral guide sections are installed on the inner wall of the reduced diameter section. The pitch between adjacent spiral guide sections decreases from large to small along the direction from the inlet flared section to the outlet flared section. The conical dividing mesh and spiral guide sections guide the fluid to form vortices, enhancing the scouring effect of the water flow on the pipe wall and effectively preventing impurities from accumulating and clogging the pipe.

[0016] 2. A barrier net is installed to filter larger solid impurities in the water. A damping connection is used to achieve a sliding connection with the inlet flared section of the pipe fitting. The damping connection uses a slider and groove structure in conjunction with elastic elements to build a buffer system, avoid rigid collisions, and effectively improve the applicability of the pipe fitting under complex working conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of a pipe fitting designed to prevent sedimentation. Figure 2 A schematic diagram of the end face structure of the flared section of a pipe fitting designed to prevent sedimentation. Figure 3 A schematic diagram of the structure of a pipe fitting for preventing sedimentation after installing a barrier mesh and a damping connection. Figure 4 This is a schematic diagram of the structure of a pipe fitting after the installation of an anti-backflow device to prevent sedimentation.

[0018] In the attached diagram: 100, pipe body; 110, reduced diameter section; 120, inlet flaring section; 121, chute; 122, thickened protrusion; 130, outlet flaring section; 200, dividing mesh; 210, spoke ribs; 220, conical disc; 230, hollow section; 300, spiral guide section; 400, barrier mesh; 500, damping connection section; 510, elastic element; 520, slider; 600, anti-backflow device. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Example 1 This embodiment is a first embodiment of a pipe fitting for preventing sedimentation, such as... Figure 1 and 2 As shown, the device includes a pipe body 100, which is divided into a reduced diameter section 110 and an inlet flared section 120 and an outlet flared section 130 located at both ends of the reduced diameter section 110. A dividing mesh 200 is provided at one end of the reduced diameter section 110 near the inlet flared section 120. The dividing mesh 200 includes several circumferentially spaced spokes 210, which are fixedly connected to the inner wall of the reduced diameter section 110. A hollow portion 230 is formed between adjacent spokes 210. The dividing mesh 200 is conical, and the conical tip of the dividing mesh 200 points to the side of the inlet flared section 120. Several spiral guide portions 300 are provided on the inner wall of the reduced diameter section 110. The pitch between adjacent spiral guide portions 300 decreases from large to small along the direction from the inlet flared section 120 to the outlet flared section 130.

[0022] Specifically, the dividing net 200 also includes a conical disk 220, which is located at the center of the dividing net 200 and is fixedly connected to several spoke ribs 210. The conical tip of the dividing net 200 adopts a disk-shaped conical structure to increase the contact area between the conical tip and the water flow, and can give the water flow a stable rotational angular momentum in the initial stage.

[0023] Specifically, the thickness of the spoke rib 210 gradually increases in the radial direction of the tube body 100; the thickness of the spoke rib 210 is greatest at the point where it connects with the tube wall of the reduced diameter section 110, so as to avoid the connection of the spoke rib 210 from breaking due to stress concentration.

[0024] Specifically, four to six spokes 210 are provided, with the included angle between adjacent spokes 210 being between 60° and 90°; the main function of the spokes 210 is to divide the water flow, such as... Figure 2 As shown, the spoke ribs 210 are set with four corresponding adjacent spoke ribs 210 with an included angle of 90° to divide one water flow into four water flows, making the rotation of the water flow more stable in the initial stage.

[0025] The working principle of the anti-deposition pipe fitting in this embodiment is as follows: As the water flows over the conical disk 220, it undergoes radial divergent rotation, gaining initial rotational angular momentum. Continuing its flow, it is divided into four rotating streams by four circumferentially spaced spokes 210, flowing through the hollow section 230. Upon entering the narrowing section 110, due to the reduced cross-section and the fluid's incompressibility under these conditions, the flow velocity increases. Simultaneously, due to the conservation of angular momentum, the water's spin radius decreases, and the rotational angular velocity increases. Then, under the wall-hanging effect of the spiral guide section 300, a gradual constraint is applied to the four swirling streams. The initial large-pitch section guides the swirling streams to develop smoothly, while the pitch decreases as the spiral density increases. The water flow's rotation radius is continuously compressed, and the tangential velocity increases sharply, eventually forming a high-intensity spiral turbulence. The centrifugal force generated by the high-speed rotation of the spiral turbulence throws impurities in the water flow radially toward the pipe wall. The strong shear force between the fluid and the pipe wall directly strips away the sediment and impurities. Most of the smaller impurities are dynamically trapped in the vortex and cannot settle (similar to the process of a washing machine rinsing clothes). When the water flow carrying impurities enters the 130° outlet section, the pipe diameter expands, causing the flow velocity to decrease and the pressure to rise. The strong vortex that has already formed carries away the impurities due to the inertia that maintains the rotational energy (similar to the vortex principle of flushing a toilet).

[0026] The beneficial effects of this embodiment are: the conical dividing mesh 200 and the spiral guide part 300 guide the fluid to form a vortex, which enhances the flushing effect of the water flow on the pipe wall and effectively avoids impurities from depositing inside the pipe and clogging it.

[0027] Example 2 This embodiment is a second embodiment of a pipe fitting designed to prevent sedimentation, such as... Figure 3 As shown, it also includes a barrier net 400, which is slidably connected to the inner wall of the inlet flare section 120. The barrier net 400 is a barrier for the inlet flare section 120. Its main function is to capture larger solid impurities (such as stones, dead branches, plastic fragments, etc.) in the water, preventing these coarse particles from flowing into the narrowing section 110 and clogging the narrowing section 110 with a smaller diameter. At the same time, it avoids large particles from impacting or clogging the spoke ribs 210 and the hollow part 230 of the dividing net 200, thus ensuring the fluid guiding function of the dividing net 200.

[0028] Specifically, it also includes a damping connection part 500, and a groove 121 is provided on the inner wall of the water inlet flared section 120. The damping connection part 500 is slidably connected to the groove 121, and the barrier net 400 is fixedly connected to the damping connection part 500. The damping connection part 500 forms a buffer connection system for the barrier net 400, improving the applicability of the pipe fitting under complex working conditions.

[0029] Specifically, the damping connection 500 includes an elastic element 510 and a slider 520. The edge of the barrier net 400 is fixedly connected to the slider 520, and the slider 520 is slidably connected to the slide groove 121. Elastic elements 510 are connected to both sides of the slider 520, and the other end of the elastic element 510 is fixedly connected to the side wall of the slide groove 121. The damping connection 500, through the slider 520 and slide groove 121 structure in conjunction with the elastic element 510, constructs a buffer system. When the water flow suddenly increases, the impact energy is converted into elastic potential energy by the slider 520 compressing the elastic element 510, thus avoiding rigid collisions. The damping properties of the elastic element 510 effectively absorb the mechanical vibration caused by water flow fluctuations. When the impact force exceeds a threshold, the limiting structure of the slide groove 121 prevents the barrier net 400 from dislodging and being damaged.

[0030] Specifically, the outer wall of the inlet flared section 120 is provided with a thickened protrusion 122, which is located on the outer wall corresponding to the location of the groove 121. Since the inner wall of the pipe body 100 of the inlet flared section 120 has a groove 121, the strength of the pipe body 100 wall will decrease. Therefore, the thickened protrusion 122 is provided on the outer wall opposite to the groove 121 to increase the pipe wall thickness at that location and restore the compressive strength of the pipe wall.

[0031] The working principle of the anti-deposition pipe fitting in this embodiment is as follows: When larger impurity particles flow in, they impact the barrier net 400. The barrier net 400 is subjected to force and slides under the action of the elastic element 510. This buffers the impact force of the particles, reduces the flow velocity of the water, reduces the fluctuation amplitude of the water flow, and keeps the water flow in a stable laminar flow state.

[0032] The beneficial effects of this embodiment are: by using the barrier net 400, larger particles are prevented from flowing into the narrowing section 110 and blocking the narrowing section 110 with smaller diameter, while large particles are prevented from impacting or blocking the spoke ribs 210 and the hollow part 230 of the dividing net 200, thus ensuring the fluid guiding function of the dividing net 200.

[0033] Example 3 This embodiment is a third embodiment of a pipe fitting designed to prevent sedimentation. Figure 4As shown, the outlet flared section 130 is equipped with an anti-backflow device 600. Since the pitch between the spiral guide sections 300 decreases from large to small along the direction from the inlet flared section 120 to the outlet flared section 130, and the conical tip of the dividing mesh 200 points towards the inlet flared section 120, the reverse flow of water cannot effectively change the fluid flow pattern and achieve the effect of fluid vortex generation. Therefore, the anti-backflow device 600 is set to remind workers to install correctly and to prevent the pipe fittings from being used in reverse.

[0034] Specifically, both the inlet flared section 120 and the outlet flared section 130 have internal threads on their inner walls near the socket. The internal threads of both the inlet flared section 120 and the outlet flared section 130 are used to connect to external pipes, thus achieving the basic function of normal connection.

[0035] The working principle of the anti-deposition pipe fitting in this embodiment is as follows: like Figure 4 As shown, the anti-backflow device 600 is an inclined plate that is rotatably connected to the inner wall of the outlet flare section 130. When the water flows from the inlet flare section 120 to the outlet flare section 130, the water pushes the plate open, and the plate rotates open, allowing the water to flow normally. When the water flows in the opposite direction, the water pushes the plate, and the plate closes, preventing the water from continuing to flow.

[0036] The beneficial effects of this embodiment are: the anti-backflow device 600 installed inside the pipe fitting can effectively remind workers to install it correctly and at the same time prevent the pipe fitting from being used in reverse.

[0037] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pipe fitting for preventing sedimentation, characterized in that, The system includes a pipe body (100), which is divided into a reduced-diameter section (110) and an inlet flared section (120) and an outlet flared section (130) located at both ends of the reduced-diameter section (110). A dividing mesh (200) is provided at one end of the reduced-diameter section (110) near the inlet flared section (120). The dividing mesh (200) includes a plurality of circumferentially spaced spokes (210). The spokes (210) are connected to the inner wall of the reduced-diameter section (110). The fixed connection is formed between adjacent spokes (210) to form a hollow part (230). The dividing mesh (200) is conical, and the conical tip of the dividing mesh (200) points to the side of the water inlet flared section (120). Several spiral guide parts (300) are provided on the inner wall of the narrowing section (110). The pitch between adjacent spiral guide parts (300) decreases from large to small along the direction from the water inlet flared section (120) to the water outlet flared section (130).

2. The anti-deposition pipe fitting according to claim 1, characterized in that, The dividing mesh (200) also includes a conical disk (220), which is located at the center of the dividing mesh (200) and is fixedly connected to a plurality of the spokes (210).

3. The anti-deposition pipe fitting according to claim 1, characterized in that, The thickness of the spoke rib (210) gradually increases along the radial direction of the tube body (100).

4. The anti-deposition pipe fitting according to claim 1, characterized in that, The spokes (210) are provided in four to six sections, and the included angle between adjacent spokes (210) is between 60° and 90°.

5. The anti-deposition pipe fitting according to claim 1, characterized in that, It also includes a barrier net (400), which is slidably connected to the inner wall of the inlet flare section (120).

6. A pipe fitting for preventing sedimentation according to claim 5, characterized in that, It also includes a damping connection part (500), the inner wall of the water inlet flare section (120) is provided with a sliding groove (121), the damping connection part (500) is slidably connected to the sliding groove (121), and the barrier net (400) is fixedly connected to the damping connection part (500).

7. A pipe fitting for preventing sedimentation according to claim 6, characterized in that, The damping connection (500) includes an elastic element (510) and a slider (520). The edge of the barrier net (400) is fixedly connected to the slider (520). The slider (520) is slidably connected to the slide groove (121). Both sides of the slider (520) are fixedly connected to one end of the elastic element (510), and the other end of the elastic element (510) is fixedly connected to the side wall of the slide groove (121).

8. A pipe fitting for preventing sedimentation according to claim 6, characterized in that, The outer wall of the water inlet flare section (120) is provided with a thickened protrusion (122), which is located on the outer wall corresponding to the location of the slide groove (121).

9. A pipe fitting for preventing sedimentation according to any one of claims 5-7, characterized in that, The flared outlet section (130) is equipped with an anti-backflow device (600).

10. A pipe fitting for preventing sedimentation according to claim 9, characterized in that, Both the inlet flared section (120) and the outlet flared section (130) have internal threads on their inner wall surfaces near the socket.

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