Anti-clogging spray head for biogas slurry spraying

Abstract

The utility model relates to a kind of anti-blocking spray head for biogas slurry spraying, including injection main part.The inside of injection main part is provided with first flow channel for the flow of biogas slurry and second flow channel for the flow of clean water.Separate plate is arranged between first flow channel and second flow channel.Rotary part is arranged in second flow channel, which surrounds separate plate and is communicated with first flow channel.Spray hole is arranged on rotary part, which is communicated from second flow channel to first flow channel.Rotary part is rotatably connected with separate plate in a way that clean water in second flow channel is rotated and directed to first flow channel.The utility model converts the flow of clean water into rotary power by rotary part, and directs the rotary clean water to first flow channel where biogas slurry is located by spray hole.Rotary water flow can not only disturb biogas slurry in first flow channel, prevent suspended impurities in biogas slurry from adhering and depositing due to reduced flow rate, but also directly flush the inner wall of first flow channel and possible blockage, solve the core problem of easy clogging of biogas slurry spray head from two dimensions of active anti-blocking and passive unblocking.

Description

Technical Field

[0001] This utility model relates to the field of biogas slurry spraying technology, and in particular to an anti-clogging nozzle for biogas slurry spraying. Background Technology

[0002] Biogas slurry, an important product of anaerobic fermentation of biomass, is rich in nitrogen, phosphorus, potassium, and various trace elements, making it a high-quality organic fertilizer resource for agricultural production. Applying biogas slurry to farmland, orchards, or greenhouse crops via spraying not only achieves the resource utilization of waste but also reduces the use of chemical fertilizers, meeting the needs of ecological agriculture development. Therefore, biogas slurry spraying technology is increasingly widely used in modern agriculture.

[0003] However, biogas slurry has a complex composition, containing not only nutrients but also a large amount of incompletely degraded organic matter, suspended particles, colloidal substances, and a small amount of fibrous impurities. These components make biogas slurry prone to sedimentation and clogging during transportation and spraying, with the nozzles, as the core component of the spraying system, being particularly susceptible to clogging. Currently, most biogas slurry spray nozzles on the market use the structure of ordinary liquid spray nozzles, which mainly have the following defects:

[0004] 1. Poor anti-clogging ability: Traditional nozzles mostly adopt a single flow channel design, with biogas slurry sprayed directly through the nozzle, lacking a targeted anti-clogging structure. Suspended impurities in biogas slurry easily accumulate at the nozzle inlet and in the flow channel. As the usage time increases, the nozzle gradually narrows or even becomes completely blocked, resulting in a decrease in spray volume and uneven spray range, seriously affecting the fertilization effect.

[0005] 2. Difficulty in cleaning and maintenance: When a nozzle becomes clogged, it needs to be removed from the sprinkler system for cleaning or replacement. This not only increases the workload of operators but also causes sprinkler operation to be interrupted, reducing production efficiency. Some nozzles use pre-filtration with a filter screen to improve clogging resistance, but the filter screen itself is easily clogged by biogas slurry impurities, requiring frequent cleaning and further increasing maintenance costs.

[0006] 3. Limited functionality and high energy consumption: Some existing anti-clogging solutions achieve clogging by increasing the spray pressure, but the high pressure requirement increases the energy consumption of power equipment such as water pumps and is prone to impact damage to crops; other solutions use clean water to periodically flush the nozzles, which requires additional independent flushing pipelines and control devices, resulting in a complex system structure, cumbersome operation, and inability to achieve real-time anti-clogging during the spraying process.

[0007] The aforementioned problems result in low reliability and high maintenance costs for biogas slurry spraying systems, severely hindering the promotion of biogas slurry resource utilization technology. Therefore, a biogas slurry spray nozzle with a simple structure, significant anti-clogging effect, convenient maintenance, and good spraying performance has become a pressing technical challenge in the field of agricultural equipment.

[0008] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that this utility model does not have the features of these prior art. On the contrary, this utility model has all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides an anti-clogging nozzle for biogas slurry spraying, comprising a spray body for biogas slurry spraying. One end of the spray body is provided with a first connector for connecting to a biogas slurry pipeline. The interior of the spray body is provided with a first flow channel for biogas slurry flow and a second flow channel for clean water flow. An annular baffle is provided between the first and second flow channels. A rotating component is provided within the second flow channel, surrounding the baffle and communicating with the first flow channel. The rotating component has spray holes communicating from the second flow channel to the first flow channel. The rotating component is rotatably connected to the baffle in a manner that guides the clean water from the second flow channel to the first flow channel.

[0010] According to a preferred embodiment, the second flow channel is provided with a second connector for connecting to a clean water pipe. The second connector is arranged in a manner that does not coincide with the radial direction of the first flow channel. The second connector communicates with the second flow channel in an eccentric manner with respect to the first flow channel.

[0011] According to a preferred embodiment, a plurality of guide members are arranged at intervals around the circumferential direction at the end of the rotating member away from the nozzle. The guide members are located at the inlet position of the corresponding second connector in the second flow channel.

[0012] According to a preferred embodiment, a cavity for water flow is provided between the nozzle and the guide member. A plurality of nozzles are spaced apart circumferentially along the rotating member.

[0013] According to a preferred embodiment, the first flow channel and the second flow channel are coaxially arranged, and a plurality of nozzles connect the first flow channel and the second flow channel in a manner that surrounds the inner wall of the first flow channel.

[0014] According to a preferred embodiment, a first Glyd ring is provided between the side of the rotating member near the nozzle and the inner wall of the spray body for dynamic sealing. A second Glyd ring is provided between the side of the rotating member near the guide member and the partition for dynamic sealing.

[0015] According to a preferred embodiment, a limiting platform for limiting the rotating component is provided on the side of the baffle near the nozzle. The limiting platform extends radially along the second flow channel to confine the rotating component within the second flow channel.

[0016] According to a preferred embodiment, an axial limiting member is provided on the side of the rotating member near the guide member.

[0017] According to a preferred embodiment, the axial limiting member is engaged in a ring-shaped manner between the injection body and the partition.

[0018] According to a preferred embodiment, the rotating member is rotatably connected to the partition via a needle roller bearing in a manner that guides the clean water from the second flow channel to the first flow channel. The rotating member is rotatably disposed within the internal space formed by the second flow channel and the partition via the needle roller bearing. Attached Figure Description

[0019] Figure 1 This is a simplified structural diagram of an anti-clogging nozzle for biogas slurry spraying, according to a preferred embodiment of the present invention.

[0020] Figure 2 This is a simplified cross-sectional view of an anti-clogging nozzle for biogas slurry spraying, according to a preferred embodiment of the present invention.

[0021] Figure 3 This is a simplified structural diagram of a rotating component according to a preferred embodiment of the present invention;

[0022] Figure 4 This is a simplified cross-sectional view of the rotating component according to a preferred embodiment of the present invention.

[0023] List of reference numerals

[0024] 100: Spray body; 101: First connector; 102: Second connector; 103: First glyph ring; 104: Second glyph ring; 201: First flow channel; 202: Second flow channel; 203: Baffle; 204: Rotating component; 205: Spray nozzle; 206: Guide component; 207: Limiting platform; 208: Axial limiting component; 209: Needle roller bearing. Detailed Implementation

[0025] The following is a detailed explanation with reference to the accompanying drawings.

[0026] Example 1

[0027] This utility model provides an anti-clogging nozzle for biogas slurry spraying, such as... Figure 1 and Figure 2As shown, the device includes a spray body 100 for biogas slurry spraying. One end of the spray body 100 is provided with a first connector 101 for connecting to a biogas slurry pipeline. The interior of the spray body 100 is provided with a first flow channel 201 for biogas slurry flow and a second flow channel 202 for clean water flow. An annular baffle 203 is provided between the first flow channel 201 and the second flow channel 202. A rotating member 204 is provided within the second flow channel 202, surrounding the baffle 203 and communicating with the first flow channel 201. The rotating member 204 is provided with spray holes 205 communicating from the second flow channel 202 to the first flow channel 201. The rotating member 204 is rotatably connected to the baffle 203 in a manner that rotates and guides the clean water from the second flow channel 202 to the first flow channel 201. This invention addresses the issue of biogas slurry nozzle clogging by incorporating a first channel 201 (biogas slurry channel) and a second channel 202 (clean water channel) that are isolated from each other within the spray body 100. An annular baffle 203 effectively separates the two channels, preventing concentration changes and impurity deposition caused by premature mixing of biogas slurry and clean water within the channels. The core design of the rotating component 204 converts the clean water flow into rotational power, guiding the rotating clean water through the nozzle 205 to the first channel 201 containing the biogas slurry. This rotating water flow not only disturbs the biogas slurry within the first channel 201, preventing suspended impurities from adhering and depositing due to reduced flow velocity, but also directly flushes the inner wall of the first channel 201 and any potential blockages. This addresses the core problem of biogas slurry nozzle clogging from both active anti-clogging and passive clearing perspectives. Furthermore, the compatible design of the first connector 101 with the biogas slurry pipeline ensures the sealing and stability of the biogas slurry supply, providing a fundamental guarantee for the overall functionality of the nozzle.

[0028] According to a preferred embodiment, the second flow channel 202 is provided with a second connector 102 for connecting to a clean water pipe. The second connector 102 is arranged in a manner that does not coincide with the radial direction of the first flow channel 201. The second connector 102 communicates with the second flow channel 202 in an eccentric manner with the first flow channel 201. The eccentric inflow causes the clean water to naturally form a circulation after entering the second flow channel 202. This circulation, in conjunction with the guide member 206, can significantly enhance the driving force on the rotating member 204, making the rotating member 204 start more quickly and rotate more smoothly. The rotating member 204 drives the clean water to flow out from the rotating nozzle 205, avoiding the problem of nozzle clogging.

[0029] According to a preferred embodiment, such as Figure 3 and Figure 4As shown, a plurality of guide members 206 are arranged at intervals around the circumference of the rotating member 204 at the end away from the nozzle 205. The guide members 206 are located at the inlet position of the corresponding second connector 102 in the second flow channel 202. The design of arranging a plurality of guide members 206 at intervals around the circumference of the rotating member 204 at the end away from the nozzle 205 and positioning them at the inlet position of the second connector 102 efficiently captures the kinetic energy of the clean water entering the second flow channel 202. By guiding the eccentrically flowing clean water, the guide members 206 convert the power of the water flow into the circumferential torque of the rotating member 204, enabling the rotating member 204 to obtain stable and sufficient rotational power. The stable rotation ensures the uniformity of the water output from the subsequent nozzle 205 and the continuity of the flushing force, further improving the anti-clogging effect.

[0030] According to a preferred embodiment, a cavity for clean water flow is provided between the nozzle 205 and the guide member 206. A plurality of nozzles 205 are distributed circumferentially around the rotating member 204. The cavity design between the nozzles 205 and the guide member 206 provides a buffer and pressure equalization space for the clean water entering the second flow channel 202. The circumferentially distributed arrangement of the nozzles 205 around the rotating member 204 allows clean water to be sprayed into the first flow channel 201 in a ring array through the nozzles 205 when the rotating member 204 rotates, forming a surrounding flushing effect that covers all areas of the inner wall of the first flow channel 201, thoroughly removing impurities deposited in the dead corners of traditional nozzle flushing. This uniformly distributed water outlet method also ensures that the biogas slurry is uniformly disturbed within the first flow channel 201, further preventing impurity accumulation and improving the uniformity of spraying and the comprehensiveness of anti-clogging.

[0031] According to a preferred embodiment, the first flow channel 201 and the second flow channel 202 are coaxially arranged, and a plurality of nozzles 205 connect the first flow channel 201 and the second flow channel 202 in a manner surrounding the inner wall of the first flow channel 201. The coaxial arrangement of the first flow channel 201 and the second flow channel 202 ensures the consistency of the water flow axis inside the nozzle, reduces the turning resistance and energy loss of the water flow within the channels, and allows both the biogas slurry and clean water to maintain a stable flow velocity, avoiding impurity deposition caused by excessively low local flow velocities due to channel offset. The nozzles 205 connect the two flow channels in a manner surrounding the inner wall of the first flow channel 201, allowing the rotating clean water to directly act on the core area of ​​the biogas slurry flow and the inner wall of the first flow channel 201. The scouring direction forms a reasonable angle with the biogas slurry flow direction, which can efficiently remove impurities from the inner wall and promote the biogas slurry to form a spiral flow, strengthening the biogas slurry's own anti-deposition ability. This structural combination synergistically improves the anti-clogging effect and spraying efficiency, ensuring that the nozzle maintains stable spraying performance during long-term use.

[0032] According to a preferred embodiment, a first Glyd ring 103 is provided between the side of the rotating component 204 near the nozzle 205 and the inner wall of the spray body 100 for dynamic sealing. A second Glyd ring 104 is provided between the side of the rotating component 204 near the guide component 206 and the partition plate 203 for dynamic sealing. The first Glyd ring 103 and the second Glyd ring 104 are respectively provided on the two key dynamic sealing surfaces of the rotating component 204 and the inner wall of the spray body 100, and the rotating component 204 and the partition plate 203, thus constructing a dual dynamic sealing system. The Glyd ring has excellent wear resistance and sealing stability, effectively preventing water from flowing out of the gaps during the high-speed rotation of the rotating component 204. The dual sealing design not only improves sealing reliability but also adapts to pressure fluctuations and media corrosion inside the nozzle, extending the replacement cycle of the seals, reducing the maintenance cost of the nozzle, and ensuring long-term stable operation of the nozzle under complex working conditions.

[0033] According to a preferred embodiment, a limiting platform 207 for limiting the rotating component 204 is provided on the side of the partition 203 near the nozzle 205. The limiting platform 207 extends radially along the second flow channel 202 to confine the rotating component 204 within the second flow channel 202. The radially extending limiting platform 207 provided on the partition 203 forms a precise axial positioning for the rotating component 204, stably confining the rotating component 204 within a preset working area of ​​the second flow channel 202, effectively preventing the rotating component 204 from axially shifting under the impact of water flow. The elimination of axial shift ensures, on the one hand, the relative position of the nozzle 205 and the first flow channel 201 remains stable, ensuring that the direction of the clean water rinsing always accurately acts on the target area, avoiding a decrease in the anti-clogging effect due to positional deviation; on the other hand, it reduces the axial collision wear between the rotating component 204 and components such as the spray body 100 and the partition 203, reducing the risk of component damage, while maintaining the fitting accuracy of the dynamic sealing surface, ensuring the stability of the sealing performance, and extending the overall service life of the nozzle.

[0034] According to a preferred embodiment, an axial limiting member 208 is provided on the side of the rotating member 204 near the guide member 206. Preferably, the axial limiting member 208 is engaged in a ring-like manner between the injection body 100 and the partition plate 203. The axial limiting member 208 on the side of the rotating member 204 near the guide member 206 forms a "bidirectional limiting" structure with the limiting platform 207 on the partition plate 203, strictly constraining the axial displacement of the rotating member 204 from both ends, completely solving the positioning deviation problem that may exist with a single limiting mechanism. This design ensures that the rotating member 204 maintains a stable working position under various operating conditions (such as sudden changes in water flow pressure or long-term high-speed rotation), avoiding a chain reaction of problems such as rotational jamming and seal failure caused by axial movement.

[0035] According to a preferred embodiment, the rotating component 204 is rotatably connected to the partition 203 via a needle roller bearing 209 in a manner that guides the clean water from the second flow channel 202 to the first flow channel 201. The rotating component 204 is rotatably disposed within the internal space formed by the second flow channel 202 and the partition 203 via the needle roller bearing 209. The needle roller bearing 209, which enables the rotatable connection between the rotating component 204 and the partition 203, has the characteristics of high load-bearing capacity and low coefficient of friction, providing stable support and flexible rotation for the rotating component 204 within the confined installation space inside the nozzle. The low coefficient of friction significantly reduces the rotational resistance of the rotating component 204, allowing it to be more easily driven by clean water, improving rotational response speed and stability, and avoiding rotational stagnation caused by excessive resistance.

[0036] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection scope. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. This utility model specification contains multiple inventive concepts; phrases such as "preferred" or "according to a preferred embodiment" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept. Throughout the text, the feature introduced by "preferred" is only an optional mode and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A clog-resistant nozzle for biogas slurry spraying, characterized in that, The system includes a spraying body (100) for biogas slurry spraying. One end of the spraying body (100) is provided with a first connector (101) for connecting to a biogas slurry pipeline. The interior of the spraying body (100) is provided with a first flow channel (201) for biogas slurry flow and a second flow channel (202) for clean water flow. An annular partition (203) is provided between the first flow channel (201) and the second flow channel (202). A rotating member (204) is provided in the second flow channel (202) surrounding the partition (203) and communicating with the first flow channel (201). A spray hole (205) is provided on the rotating member (204) communicating from the second flow channel (202) to the first flow channel (201). The rotating member (204) is rotatably connected to the partition (203) in such a way as to rotate and guide the clean water in the second flow channel (202) to the first flow channel (201).

2. The anti-clogging nozzle for biogas slurry spraying according to claim 1, characterized in that, The second flow channel (202) is provided with a second connector (102) for connecting to a clean water pipe. The second connector (102) is arranged in a manner that does not coincide with the radial direction of the first flow channel (201). The second connector (102) is connected to the second flow channel (202) in an eccentric manner with respect to the first flow channel (201).

3. The anti-clogging nozzle for biogas slurry spraying according to claim 2, characterized in that, The rotating component (204) has a plurality of guides (206) arranged at intervals on the circumferential direction at the end away from the nozzle (205). The guides (206) are located at the inlet position of the second flow channel (202) corresponding to the second connector (102).

4. The anti-clogging nozzle for biogas slurry spraying according to claim 3, characterized in that, A cavity for the flow of clean water is provided between the nozzle (205) and the guide (206), wherein, Several of the nozzles (205) are distributed at circumferential intervals along the rotating member (204).

5. The anti-clogging nozzle for biogas slurry spraying according to claim 4, characterized in that, The first flow channel (201) and the second flow channel (202) are coaxially arranged, and a plurality of the nozzles (205) are connected to the first flow channel (201) and the second flow channel (202) in a manner that surrounds the inner wall of the first flow channel (201).

6. The anti-clogging nozzle for biogas slurry spraying according to claim 5, characterized in that, A first glyph ring (103) is provided between the side of the rotating component (204) near the nozzle (205) and the inner wall of the spray body (100) for dynamic sealing, and a second glyph ring (104) is provided between the side of the rotating component (204) near the guide (206) and the partition (203) for dynamic sealing.

7. The anti-clogging nozzle for biogas slurry spraying according to claim 6, characterized in that, The partition (203) is provided with a limiting platform (207) for limiting the rotating member (204) on the side near the nozzle (205). The limiting platform (207) extends radially along the second flow channel (202) to confine the rotating member (204) within the second flow channel (202).

8. The anti-clogging nozzle for biogas slurry spraying according to claim 7, characterized in that, An axial limiting member (208) is provided on the side of the rotating member (204) near the guide member (206).

9. The anti-clogging nozzle for biogas slurry spraying according to claim 8, characterized in that, The axial limiting member (208) is engaged in a ring-shaped manner between the injection body (100) and the partition (203).

10. The anti-clogging nozzle for biogas slurry spraying according to claim 1, characterized in that, The rotating component (204) is rotatably connected to the partition (203) via a needle roller bearing (209) in a manner that guides the clean water from the second flow channel (202) to the first flow channel (201). The rotating component (204) is rotatably disposed in the internal space formed by the second flow channel (202) and the partition plate (203) via the needle roller bearing (209).

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