Backwash nozzle with slagging function
By designing a backwash nozzle with a slag discharge function, the problem of clogging in traditional nozzles was solved, and the automatic discharge of small particulate impurities was achieved, ensuring the normal use of the nozzle and the continuity of the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI YITONG SANFANG TECH CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional sprinklers lack an effective impurity discharge mechanism after filtering small particulate impurities, leading to nozzle blockage and affecting normal water output and operation.
A backwash nozzle with slag discharge function was designed, comprising a conical nozzle, a circular filter screen and an automatic slag discharge mechanism. The nozzle swings to automatically discharge impurities, and the assembly blocks, booster plates, spring telescopic rods and other structures are used to remove small particulate impurities in a timely manner.
It effectively prevents nozzle clogging, ensures normal water output and smooth operation, and guarantees the long-term performance of the nozzles.
Smart Images

Figure CN224486330U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nozzle technology, and in particular to a backwash nozzle with slag discharge function. Background Technology
[0002] In traditional coal mining operations, coal mine water is usually discharged directly. This untreated coal mine water contains a variety of harmful substances, and its discharge can cause serious potential harm to the surrounding environment. It may not only pollute water sources and soil and damage the surrounding ecosystem, but also threaten the health of residents. More seriously, long-term direct discharge of coal mine water will create hidden dangers for mine safety and increase the possibility of accidents. Once an accident occurs, it will cause casualties and huge economic losses. Therefore, coal mine water needs to be filtered before it is discharged.
[0003] Coal mine water contains various impurities of different sizes. Although it is filtered before discharge, some very small impurities may still remain. When a nozzle sprays water containing small particles of impurities, the filter screen inside the nozzle can perform secondary filtration of the small particles. However, the nozzle lacks an impurity discharge mechanism, which causes small particles of impurities to accumulate inside the nozzle, eventually causing blockage, affecting the normal water output and use of the nozzle, and interfering with related work processes. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides the following technical solution: a backwash nozzle with slag discharge function, comprising a conical nozzle, wherein the outer side of the conical nozzle near the bottom is provided with multiple water outlet holes in a circular shape, a water inlet pipe is fixedly installed on the top of the conical nozzle, a threaded hole is provided on the bottom of the conical nozzle, and a circular filter screen is fixedly installed on the inner wall of the conical nozzle.
[0005] The cone-shaped nozzle has a fixed, swing-type slag discharge mechanism inside for automatically discharging impurities. The slag discharge mechanism is connected to the threaded hole via a thread.
[0006] As an improvement to the above technical solution, the slag discharge mechanism includes an assembly block, an assist plate, a fulcrum sphere, a spring telescopic rod, a fixed sphere, a circular blocking plate, a return spring, a counterweight sphere, and a circular baffle. The assembly block is threaded into a threaded hole. A slag discharge hole is formed through the center of the top of the assembly block. An expansion groove is formed near the slag discharge hole at the top of the assembly block. The assist plate is fixedly installed on the lower side of the inner wall of the slag discharge hole. A spherical slot is formed through the center of the assist plate. The fulcrum sphere is movably engaged in the spherical slot. The spring telescopic rod is fixedly installed on the top outer side of the fulcrum sphere. The fixed sphere is fixedly installed on the top of the spring telescopic rod. The circular blocking plate is movably engaged on the outer side of the fixed sphere. The bottom of the circular blocking plate, away from the center, is in contact with the bottom of the expansion groove. The return spring is fixedly installed on the bottom outer side of the fulcrum sphere via a plate. The counterweight sphere is fixedly installed at the bottom end of the return spring. The circular baffle is fixedly installed on the top of the assembly block via a plate.
[0007] As an improvement to the above technical solution, the cross-section of the threaded hole is designed in an L-shape.
[0008] As an improvement to the above technical solution, the top of the assembly block is designed to be low in the middle and high around the edges.
[0009] As an improvement to the above technical solution, the top of the circular baffle is designed to be high in the middle and low around the edges.
[0010] The beneficial effects of this utility model are as follows: When the filtered water enters the conical nozzle, it is filtered again by the circular filter screen and then discharged through the outlet. When it is necessary to remove impurities, simply swing the conical nozzle so that the impurities are automatically discharged with the help of the slag discharge mechanism. This allows small particles of impurities to be discharged from the conical nozzle in a timely manner, preventing impurities from accumulating inside the nozzle and thus effectively preventing blockages. This ensures the normal water output and use of the conical nozzle and guarantees the smooth operation of related processes. Attached Figure Description
[0011] Figure 1 This is a front view of the backwash nozzle of this utility model;
[0012] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0013] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.
[0014] Reference numerals: 1. Conical nozzle; 11. Water outlet; 12. Water inlet pipe; 13. Threaded hole; 2. Circular filter screen; 21. Assembly block; 3. Slag discharge hole; 31. Expansion tank; 32. Assist plate; 33. Pivot sphere; 34. Spring telescopic rod; 35. Fixed sphere; 36. Circular blocking plate; 37. Return spring; 38. Counterweight sphere; 39. Circular baffle. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.
[0016] Reference Appendix Figure 1 ,exist Figure 1 In the diagram, 'a' points to the front view and 'b' points to the right-side view. These views are only used to understand the scheme.
[0017] Please see Figure 1-3 This utility model provides a technical solution: a backwash nozzle with slag discharge function, including a conical nozzle 1, with multiple water outlet holes 11 in a circular shape on the outer side of the conical nozzle 1 near the bottom, a water inlet pipe 12 fixedly installed on the top of the conical nozzle 1, a threaded hole 13 opened on the bottom of the conical nozzle 1, and a circular filter screen 2 fixedly installed on the inner wall of the conical nozzle 1.
[0018] The cone-shaped nozzle 1 has a fixed, swing-type slag discharge mechanism for automatically discharging impurities inside, and the slag discharge mechanism is connected to the threaded hole 13 by a thread.
[0019] In this embodiment, after the filtered water enters the conical nozzle 1, it is filtered again by the circular filter screen 2, and then discharged through the water outlet 11. When it is necessary to remove impurities, simply swing the conical nozzle 1 so that the impurities are automatically discharged with the help of the slag discharge mechanism. This allows small particles of impurities to be discharged from the conical nozzle 1 in a timely manner, avoiding the accumulation of impurities in the conical nozzle 1, thereby effectively preventing clogging and ensuring the normal water output and use of the conical nozzle 1.
[0020] Specifically, the slag discharge mechanism includes an assembly block 21, an assist plate 32, a fulcrum sphere 33, a spring telescopic rod 34, a fixed sphere 35, a circular blocking plate 36, a return spring 37, a counterweight sphere 38, and a circular baffle 39. The assembly block 21 is threaded into the threaded hole 13. A slag discharge hole 3 is formed through the center of the top of the assembly block 21. An expansion groove 31 is formed near the slag discharge hole 3 at the top of the assembly block 21. The assist plate 32 is fixedly installed on the inner wall of the slag discharge hole 3 near the lower side. A spherical slot is formed through the center of the assist plate 32. The pivot sphere 33 is movably engaged in the sphere slot. The spring telescopic rod 34 is fixedly installed on the top outer side of the pivot sphere 33. The fixed sphere 35 is fixedly installed on the top of the spring telescopic rod 34. The circular blocking plate 36 is movably engaged on the outside of the fixed sphere 35. The bottom of the circular blocking plate 36, away from the center, is in contact with the bottom of the expansion groove 31. The return spring 37 is fixedly installed on the bottom outer side of the pivot sphere 33 through the inter-plate. The counterweight sphere 38 is fixedly installed on the bottom end of the return spring 37. The circular baffle 39 is fixedly installed on the top of the assembly block 21 through the inter-plate.
[0021] In this embodiment, small particulate impurities are automatically discharged during the oscillation process through the cooperation of the internal structure of the slag discharge mechanism, thereby preventing impurities from clogging the conical nozzle 1.
[0022] Specifically, the cross-section of threaded hole 13 is designed in an L-shape.
[0023] In this embodiment, the assembly block 21 is restricted so that excessive rotation of the assembly block 21 causes it to disengage from the threaded hole 13, affecting the sealing effect.
[0024] Specifically, the top of assembly block 21 has a low center and high sides design.
[0025] In this embodiment, impurities that fall onto the top of assembly block 21 can move toward the middle position of assembly block 21.
[0026] Specifically, the top of the circular baffle 39 has a design that is high in the middle and low around the edges.
[0027] In this embodiment, the water flow impacting the circular baffle 39 is able to impact the circular filter screen 2 when it rebounds.
[0028] In use, when the inlet pipe 12 is connected to an external filtration device, and the filtered coal mine water is pressurized and flows into the conical nozzle 1 through the inlet pipe 12, it will first impact the circular baffle 39. The circular baffle 39 blocks the water flow, causing the water flow to rebound and impact the circular filter screen 2. The circular filter screen 2 filters the water flow, and the filtered water flow is sprayed out through the outlet hole 11 under pressure. At this time, small particulate impurities will be adsorbed on the inner side of the circular filter screen 2. Under the washing of the water flow and its own gravity, the small particulate impurities will move downward and fall to the top center of the assembly block 21. When it is necessary to remove these impurities, simply swing the conical nozzle 1 by external force. When the conical nozzle 1 swings, the counterweight sphere 38 will deflect due to the cooperation of the assembly block 21 and the return spring 37. When the counterweight sphere 38 deflects, it uses the fulcrum sphere 33 as the support. The spring telescopic rod 34 is deflected in the opposite direction. The spring telescopic rod 34 drives the circular blocking plate 36 to move in the opposite direction through the fixed sphere 35. When the circular blocking plate 36 moves, it releases the blockage of the slag discharge hole 3. At this time, small particles of impurities will move downwards and fall to the top center of the assembly block 21 under the flushing of water. Under the action of pressure and water flow, the small particles of impurities are discharged through the slag discharge hole 3. Under the action of the return spring 37, the counterweight sphere 38 can swing multiple times. Under the action of the spring telescopic rod 34, the fixed sphere 35 is kept in contact with the expansion tank 31 when it moves, so that the small particles of impurities can be discharged from the conical nozzle 1 in time, avoiding the accumulation of impurities in the conical nozzle 1, thereby effectively preventing the occurrence of blockage, ensuring the normal water output and use of the conical nozzle 1, and ensuring the smooth operation of related processes.
[0029] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.
Claims
1. A backwash nozzle with slag discharge function, comprising a conical nozzle (1), characterized in that: The conical nozzle (1) has multiple water outlet holes (11) in a circular shape near the bottom on the outer side. A water inlet pipe (12) is fixedly installed on the top of the conical nozzle (1). A threaded hole (13) is opened at the bottom of the conical nozzle (1). A circular filter screen (2) is fixedly installed on the inner wall of the conical nozzle (1). The cone-shaped nozzle (1) has a fixed, swing-type slag discharge mechanism for automatically discharging impurities inside, and the slag discharge mechanism is connected to the threaded hole (13) by a thread.
2. A backwash nozzle with slag discharge function according to claim 1, characterized in that: The slag discharge mechanism includes an assembly block (21), an assist plate (32), a fulcrum sphere (33), a spring telescopic rod (34), a fixed sphere (35), a circular blocking plate (36), a return spring (37), a counterweight sphere (38), and a circular baffle (39). The assembly block (21) is threaded into a threaded hole (13). A slag discharge hole (3) is formed through the center of the top of the assembly block (21). An expansion groove (31) is formed near the slag discharge hole (3) at the top of the assembly block (21). The assist plate (32) is fixedly installed on the inner wall of the slag discharge hole (3) near the lower side. A spherical slot is formed through the middle of the inside of the assist plate (32). The fulcrum sphere (33) is movably engaged in the sphere slot, the spring telescopic rod (34) is fixedly installed on the top outer side of the fulcrum sphere (33), the fixed sphere (35) is fixedly installed on the top of the spring telescopic rod (34), the circular blocking plate (36) is movably engaged on the outside of the fixed sphere (35), the bottom of the circular blocking plate (36) is in contact with the bottom of the expansion groove (31) at the point away from the center, the reset spring (37) is fixedly installed on the bottom outer side of the fulcrum sphere (33) through the inter-plate, the counterweight sphere (38) is fixedly installed on the bottom end of the reset spring (37), and the circular baffle (39) is fixedly installed on the top of the assembly block (21) through the inter-plate.
3. A backwash nozzle with slag discharge function according to claim 1, characterized in that: The cross-section of the threaded hole (13) is L-shaped.
4. A backwash nozzle with slag discharge function according to claim 2, characterized in that: The top of the assembly block (21) is designed to be low in the middle and high around the edges.
5. A backwash nozzle with slag discharge function according to claim 2, characterized in that: The top of the circular baffle (39) is designed to be high in the middle and low around the edges.