A type of water curtain nozzle at the pier front

Abstract

This utility model discloses a water curtain nozzle at the front edge of a wharf, including a wharf and nozzle assemblies. Several water spray pipes are connected to the outer edge of the wharf via several fixed supports, and these water spray pipes are interconnected. Several sets of nozzle assemblies are provided, and these nozzle assemblies are evenly distributed on the water spray pipes. Each nozzle assembly includes a nozzle and a connecting pipe. One end of the connecting pipe is connected to the nozzle. A water flow channel is provided inside the connecting pipe, and a filter plate is located within the water flow channel. A flushing channel for backwashing the filter plate is also provided inside the connecting pipe. By setting a flushing channel inside the connecting pipe, when impurities accumulate on the filter plate, a ball valve is operated by a valve stem to close the water flow channel, allowing water to enter through the flushing channel and impact the filter plate in the reverse direction, washing away the impurities. This process does not require manual disassembly, saving a significant amount of manpower and avoiding damage to the nozzle components caused by frequent disassembly, effectively extending the nozzle's service life and reducing maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of water curtain nozzle technology, specifically relating to a water curtain nozzle at the front of a wharf. Background Technology

[0002] In the fire protection system of the dock, the dock is a key place for loading, unloading and transportation of goods. It stores and handles a large number of flammable and explosive materials, such as oil and chemical raw materials. The fire risk is extremely high. Once a fire occurs, the fire spreads rapidly and the consequences are unimaginable. Water curtain nozzles can effectively block the spread of fire by forming a dense water curtain at the front of the dock, which can buy valuable time for personnel evacuation and fire fighting and rescue. At the same time, it can also cool and protect the surrounding equipment and buildings, reducing fire losses.

[0003] To prevent clogging, existing water curtain nozzles typically incorporate filters. These filters remove impurities from the water, preventing clogging and ensuring even water spray and stable operation. However, over time, impurities accumulate on the filters, leading to clogging. Once clogged, the filters must be manually removed and cleaned. This process is not only tedious and time-consuming, requiring significant manpower and resources, but frequent manual cleaning can also damage nozzle components, shortening their lifespan and further increasing maintenance costs, making it quite inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a water curtain nozzle at the front of a wharf to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water curtain nozzle at the front edge of a wharf, comprising:

[0006] The wharf has several water spray pipes connected to its outer edge by several fixed supports, and the water spray pipes are interconnected.

[0007] The nozzle assembly comprises several groups of nozzles evenly distributed on a water spray pipe for spraying water onto the surface of the dock. The nozzle assembly includes a nozzle and a connecting pipe. One end of the connecting pipe is threadedly connected to the nozzle. The connecting pipe has a water flow channel and a filter plate located within the water flow channel. The connecting pipe also has a flushing channel for backwashing the filter plate.

[0008] Preferably, the flushing channel is connected to the water flow channel, and a ball valve is provided in the water flow channel, with a connecting groove inside the ball valve.

[0009] Preferably, a locking block is connected inside the connecting groove, and one end of the locking block is connected to a valve stem, with one end of the valve stem rotating through the connecting pipe.

[0010] Preferably, the end of the rinsing channel that connects to the water flow channel is provided with a filter screen, and the other end of the rinsing channel extends into the water flow channel.

[0011] Preferably, a sealing block is provided at one end of the flushing channel extending into the water flow channel, and a guide rod is connected to the top of the sealing block. One end of the guide rod slides through a groove provided in the flushing channel.

[0012] Preferably, a spring is sleeved on the surface of the guide rod, and the two ends of the spring are respectively connected to the sealing block and the flushing channel.

[0013] Preferably, one end of the connecting pipe is provided with an external thread, and the connecting pipe is threadedly connected to the internal thread inside the water spray pipe through the external thread.

[0014] Preferably, the connecting pipe is equipped with a drain pipe, and one end of the drain pipe is connected to the water flow channel.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) By setting a flushing channel in the connecting pipe, when impurities accumulate on the filter plate, the ball valve is operated by the valve stem to close the water flow channel, so that the water flow can enter from the flushing channel and impact the filter plate in the reverse direction to flush off the impurities. This process does not require manual disassembly, which not only saves a lot of manpower, but also avoids damage to the nozzle components caused by frequent disassembly, effectively extending the service life of the nozzle and reducing maintenance costs.

[0017] (2) The external thread at one end of the connecting pipe matches the internal thread in the spray pipe. This threaded connection method is easy to operate. When installing the nozzle assembly, no complicated tools or operating procedures are required, and the installation can be completed quickly. When the nozzle malfunctions or needs to be replaced, it can also be easily disassembled, which improves maintenance efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the nozzle and connecting pipe of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sealing block of this utility model;

[0021] Figure 4 This is a schematic diagram of the ball valve and valve stem of this utility model.

[0022] In the diagram: 1. Dock; 2. Fixed bracket; 3. Spray pipe; 4. Nozzle; 5. Connecting pipe; 6. Water flow channel; 7. Filter plate; 8. Flushing channel; 9. Ball valve; 10. Connecting groove; 11. Locking block; 12. Valve stem; 13. Filter screen; 14. Sealing block; 15. Guide rod; 16. Slide groove; 17. Spring; 18. External thread; 19. Sewage pipe; 20. Pull rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figure 1-4 The water curtain nozzle shown includes:

[0025] The outer edge of the dock 1 is connected to several water spray pipes 3 by several fixed brackets 2, and the several water spray pipes 3 are interconnected.

[0026] The nozzle assembly comprises several groups of nozzles evenly distributed on the water spray pipe 3 for spraying water onto the surface of the dock 1. The nozzle assembly includes a nozzle 4 and a connecting pipe 5. One end of the connecting pipe 5 is threadedly connected to the nozzle 4, and a sealing ring is provided at the threaded connection between the connecting pipe 5 and the nozzle 4 to seal the threaded connection and prevent water leakage. A water flow channel 6 is provided inside the connecting pipe 5, and a filter plate 7 is provided inside the water flow channel 6. A flushing channel 8 for backwashing the filter plate 7 is provided inside the connecting pipe 5.

[0027] The flushing channel 8 is connected to the water flow channel 6. The water flow channel 6 is equipped with a ball valve 9, and the ball valve 9 is equipped with a connecting groove 10.

[0028] A locking block 11 is connected inside the connecting groove 10, and a valve stem 12 is connected to one end of the locking block 11. One end of the valve stem 12 rotates through the connecting pipe 5. A sealing ring is provided at the penetration point between the valve stem 12 and the connecting pipe 5 to seal the penetration point and prevent water leakage.

[0029] The flushing channel 8 is connected to the water flow channel 6 at one end and is equipped with a filter screen 13. The other end of the flushing channel 8 extends into the water flow channel 6. The filter screen 13 can prevent large particles of impurities from entering the flushing channel 8 and avoid clogging. The filter screen 13 is installed into the flushing channel 8 by a snap-fit. When replacing the filter screen 13 after long-term use, the connecting pipe 5 can be loosened and removed from the surface of the spray pipe 3. The end of the filter screen 13 that protrudes from the flushing channel 8 can be clamped out by a clamping tool for removal. During installation, the filter screen 13 is clamped and engaged with the snap-fit ​​in the flushing channel 8 to install the filter screen 13.

[0030] A sealing block 14 is provided at one end of the flushing channel 8 extending into the water flow channel 6. A guide rod 15 is connected to the top of the sealing block 14. One end of the guide rod 15 slides through the groove 16 provided in the flushing channel 8. The guide rod 15 guides the movement direction of the sealing block 14, which can enhance the stability of the movement of the sealing block 14.

[0031] A spring 17 is sleeved on the surface of the guide rod 15, and the two ends of the spring 17 are respectively connected to the sealing block 14 and the flushing channel 8.

[0032] One end of the connecting pipe 5 is provided with an external thread 18. The connecting pipe 5 is threadedly connected to the internal thread in the water spray pipe 3 through the external thread 18. This threaded connection method is simple to operate. When installing the nozzle assembly, no complicated tools or operating procedures are required, and the installation can be completed quickly.

[0033] The connecting pipe 5 is equipped with a drain pipe 19, and one end of the drain pipe 19 is connected to the water flow channel 6. One end of the drain pipe 19 is threaded with a sealing head. When it is necessary to discharge the flushing sewage, the sealing head on the surface of the drain pipe 19 can be screwed on to open the drain pipe 19. The impurities that are washed off will enter the drain pipe 19 with the water flow and finally be discharged from the connecting pipe 5 through the drain pipe 19.

[0034] When the water curtain nozzles at the front of the dock are working normally, the external water pump draws water from the dock 1 into the water spray pipe 3 and flows from the water spray pipe 3 into the water flow channel 6 of the connecting pipe 5. At this time, the ball valve 9 is in the open state, and the opening in the middle of the ball valve 9 is connected to the water flow channel 6, so that the water can pass directly through the water flow channel 6 and be filtered by the filter plate 7. The filter plate 7 can intercept impurities such as mud and suspended solids in the water, ensuring that the water without impurities is sprayed out from the nozzle 4. The sprayed water forms a dense water curtain at the front of the dock 1, which can effectively block the spread of fire and protect the dock facilities and personnel safety in the event of a fire.

[0035] As usage time increases, impurities gradually accumulate on filter plate 7, affecting water flow. At this point, the operator rotates valve stem 12. The rotation of valve stem 12 causes the locking block 11 to rotate. Because the locking block 11 tightly engages with the connecting groove 10 inside ball valve 9, the rotation of valve stem 12 causes ball valve 9 to rotate accordingly. This causes the opening in the middle of ball valve 9 to tightly fit against the inner wall of water flow channel 6, preventing water from flowing into water flow channel 6 through ball valve 9. At this time, water can enter flushing channel 8. The filter screen 13 located near one end of the water flow channel 6 can prevent large particles of impurities from entering the flushing channel 8 and avoid clogging. As a large amount of water flows forward in the flushing channel 8, the resulting impact force can impact the sealing block 14. Under the impact force of the water flow, the sealing block 14 overcomes the elastic force of the spring 17 and slides along the guide rod 15 into the slide groove 16. At this time, after the sealing block 14 is opened, the water flow can extend from the flushing channel 8 to one end of the water flow channel 6 and spray out at high speed, which strongly backwashes the filter plate 7. Under the impact of the strong water flow, the impurities accumulated on the filter plate 7 fall off.

[0036] The top of the filter plate 7 is connected to a pull rod 20, which can contact the nozzle 4. This allows the filter plate 7 to be held in place within the connecting pipe 5 by the action of the nozzle 4 to prevent movement. When the filter plate 7 is damaged due to prolonged use, the threaded connection between the connecting pipe 5 and the nozzle 4 can be loosened, and the filter plate 7 can be pulled out of the connecting pipe 5 using the pull rod to replace the damaged filter plate 7.

[0037] When impurities fall off, the sealing head on the surface of the drain pipe 19 can be screwed on to open the drain pipe 19. The impurities that have been washed off will enter the drain pipe 19 with the water flow and eventually be discharged into the connecting pipe 5 through the drain pipe 19, completing the rinsing of the filter plate 7. After the backwashing is completed, the operator rotates the valve stem 12, causing the opening of the ball valve 9, which was originally tightly fitted to the inner wall of the water flow channel 6, to gradually separate from the inner wall of the water flow channel 6. Under the action of the valve stem 12, the opening in the middle of the ball valve 9 is rotated to connect with the water flow channel 6. At this time, the water flow can continue to flow to the nozzle 4 through the water flow channel 6 and spray out. At this time, most of the water flow mainly flows into the water flow channel 6, and a small amount of water flows into the flushing channel 8. The impact force on the sealing block 14 is small. Therefore, the sealing block 14, which loses the impact force of the water flow, slides down along the guide rod 15 under the elastic force of the spring 17 and returns to the initial position, sealing the flushing channel 8. This allows the nozzle 4 to return to the normal water spraying working state and be ready to deal with possible fire hazards.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water curtain nozzle at the front edge of a wharf, characterized in that, include: The dock (1) has several water spray pipes (3) connected to its outer edge by several fixed brackets (2), and the water spray pipes (3) are interconnected. The nozzle assembly has several groups and several nozzle assemblies are evenly distributed on the water spray pipe (3) for spraying water onto the surface of the dock (1). The nozzle assembly includes a nozzle (4) and a connecting pipe (5). One end of the connecting pipe (5) is threaded to the nozzle (4). The connecting pipe (5) has a water flow channel (6) and a filter plate (7) is located in the water flow channel (6). The connecting pipe (5) has a flushing channel (8) for backwashing the filter plate (7).

2. A water curtain nozzle at the front of a wharf according to claim 1, characterized in that: The flushing channel (8) is connected to the water flow channel (6), and a ball valve (9) is provided in the water flow channel (6), and a connecting groove (10) is provided in the ball valve (9).

3. A water curtain nozzle at the front of a wharf according to claim 2, characterized in that: The connecting groove (10) is connected to a locking block (11), and one end of the locking block (11) is connected to a valve stem (12). One end of the valve stem (12) rotates through the connecting pipe (5).

4. A water curtain nozzle at the front of a wharf according to claim 1, characterized in that: The flushing channel (8) is connected to the water flow channel (6) at one end with a filter screen (13) and the other end of the flushing channel (8) extends into the water flow channel (6).

5. A water curtain nozzle at the front of a wharf according to claim 4, characterized in that: The flushing channel (8) extends into the water flow channel (6) and has a sealing block (14) at one end. The top of the sealing block (14) is connected to a guide rod (15), and one end of the guide rod (15) slides through the groove (16) provided in the flushing channel (8).

6. A water curtain nozzle at the front of a wharf according to claim 5, characterized in that: The guide rod (15) is fitted with a spring (17), and the two ends of the spring (17) are connected to the sealing block (14) and the flushing channel (8) respectively.

7. A water curtain nozzle for the front edge of a wharf according to claim 1, characterized in that: One end of the connecting pipe (5) is provided with an external thread (18), and the connecting pipe (5) is threadedly connected to the internal thread in the water spray pipe (3) through the external thread (18).

8. A water curtain nozzle at the front of a wharf according to claim 1, characterized in that: The connecting pipe (5) is equipped with a drain pipe (19), and one end of the drain pipe (19) is connected to the water flow channel (6).

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