A fire water pipeline flow regulation device

Abstract

This invention provides a fire-fighting water pipeline flow regulation device, comprising an inlet pipe, a shut-off valve for controlling the flow of pressurized water within the pipe, an adjustable filter connected to a flow regulator with a cross-sectional area, and an outlet pipe connected to the other end of the flow regulator. Hose connector end caps are fixedly installed at the ends of the inlet and outlet pipes, and an automatic pressure relief valve with upper and lower chambers is installed at the end of the hose connector end cap. This device addresses the problems of unadjustable flow and pressure, failure to automatically drain residual water leading to accelerated pipe corrosion, and lack of filtration causing blockages. It enables manual adjustment of flow and pressure within the pipe, automatic drainage of residual water, and filtration and anti-blockage of pressurized water within the pipe.

Description

Technical Field

[0001] This invention relates to the field of fire protection pipeline technology, and specifically to a fire water pipeline flow regulation device. Background Technology

[0002] Hydraulic pipelines are widely distributed in all aspects of life and production, including hydraulic system pipelines in engineering machinery and systems, and essential fire-fighting water pipelines in industrial and domestic facilities. In industrial applications, hydraulic pipeline flow control is often achieved through a combination of pump source and hydraulic valve control. Both pump source control and hydraulic valve control are highly dependent on the reliability of the electrical system; in the event of a power outage, the system randomly loses its regulating function. In fire-fighting pipeline applications, fire-fighting water pressure often depends on the water source, pump, and the height difference of the water usage point. The water pressure and flow rate at a specific location are not adjustable, and the pressure and flow rate at different points of the same water source can vary significantly. Excessive water pressure and flow rate pose a safety risk of damaging the equipment being sprayed, while insufficient water pressure and flow rate cannot meet the fire-fighting water demand.

[0003] Patent CN205590336U, "Water System with Flow Regulation Device," discloses a flow regulation water system with water quality detection, flow regulation, and electronic control. However, the flow regulation is controlled by electrical signals from the water quality detection and electronic control devices, thus remaining dependent on electricity. This affects the system's reliability and adaptability to outdoor rainwater environments. Therefore, a reliable hydraulic filtration, flow regulation, and automatic residual water drainage device that is independent of electricity has not yet been found. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention provides a fire water pipeline flow regulation device to solve the problems of unadjustable flow and pressure, failure to automatically drain residual water leading to accelerated pipeline corrosion, and lack of filtration causing blockage. The device enables manual adjustment of flow and pressure within the pipeline, automatic drainage of residual water, and filtration and anti-blockage of pressurized water within the pipeline.

[0005] To achieve the above-mentioned technical features, the present invention aims to provide a fire-fighting water pipeline flow regulation device, comprising an inlet pipe, a shut-off valve for controlling the flow of pressurized water within the pipe, the inlet pipe being connected to a flow regulator with an adjustable filter, and an outlet pipe connected to the other end of the flow regulator with an adjustable filter; hose connector end caps are fixedly installed at the ends of the inlet and outlet pipes, and an automatic pressure relief valve with upper and lower chambers is installed at the end where the hose connector end cap is located.

[0006] Under normal water supply operation, the shut-off valve is open; under maintenance of the entire system, the shut-off valve is closed.

[0007] The adjustable filter includes a longitudinal filter screen and a transverse filter screen. The size of the filter holes in the transverse filter screen is distributed progressively from large to small. The transverse filter screen is superimposed on the longitudinal filter screen. By adjusting the position of the transverse filter screen in the vertical direction, the size of the filter screen holes can be adjusted to achieve coarse filtration, medium filtration, and fine filtration, respectively. The filtered residue is automatically removed from the filter screen and stored at the bottom of the pipe for periodic cleaning.

[0008] The flow regulator with intercepting area includes a flow regulating valve stem, a flow regulating blade, a throttling plate, a pipe connecting flange, a valve stem directional support block, a pressure spring, a convenient disconnect pin, a flow regulating turntable, and a connecting pipe. The connecting pipes are assembled and connected by pipe connecting flanges. The flow regulating valve stem is slidably supported inside the connecting pipe by the valve stem directional support block. A flow regulating blade is installed on the flow regulating valve stem, and the flow regulating blade cooperates with the throttling plate. A pressure spring is fitted on the flow regulating valve stem, and the flow regulator is kept at a fixed opening by adjusting the pressure spring. The end of the flow regulating valve stem is connected to the flow regulating turntable via a convenient disconnect pin, and the flow regulating turntable is located outside the outlet pipe.

[0009] By rotating the flow regulating disc, the flow regulating valve stem is moved back and forth, thereby adjusting the interception area between the flow regulating blade and the intercepting plate, and thus adjusting the flow rate of the water. When the flow regulator malfunctions and needs to be repaired, the pipe connection flange is disassembled to separate the two ends of the pipe, and the flow regulating disc is loosened to separate the two ends of the convenient release pin.

[0010] The upper and lower chamber automatic pressure relief valve includes an inlet pipe, a one-way shut-off valve, an upper chamber water pressure control branch pipe, a diaphragm connecting shaft, an upper chamber, a pre-tightening spring, an outlet, a double-layer valve disc, a double-layer diaphragm, a diaphragm connecting shaft directional support block, a lower chamber, and a valve body.

[0011] The one-way shut-off valve is installed inside the inlet pipe, and the other end of the inlet pipe is connected to the valve body. The valve body is equipped with a double-layer valve disc, which cooperates with a double-layer diaphragm installed on the diaphragm connecting shaft. The diaphragm connecting shaft is set inside the valve body through a diaphragm connecting shaft directional support block. A pre-tightening spring is fitted on the diaphragm connecting shaft. The valve body is equipped with an upper chamber and a lower chamber. The other end of the valve body is equipped with an outlet.

[0012] The inlet pipe is connected to the upper chamber via an upper chamber water pressure control branch pipe. When high-pressure water passes through the inlet pipe, the high-pressure water simultaneously enters the upper and lower chambers through the one-way shut-off valve and the upper chamber water pressure control branch pipe. Under the action of the pre-tightening spring, the double-layer diaphragm and the double-layer valve disc are tightly fitted, the automatic pressure relief valve is closed, and there is no water output from the outlet. When the water pressure in the inlet pipe decreases, the water pressure in the upper chamber, which is directly connected to the inlet pipe, decreases synchronously. The water pressure in the lower chamber remains constant due to the one-way shut-off valve. When the water pressure in the lower chamber is greater than the sum of the water pressure in the upper chamber and the pressure of the pre-tightening spring, the double-layer diaphragm is pushed upward, and the remaining water in the pipe is discharged through the outlet.

[0013] The hose connection end cap consists of two DN65 end caps. After opening the end caps, external hoses can be directly connected for fire fighting.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention provides a fire-fighting water pipeline flow regulation device. Compared with existing fire-fighting water pipeline flow regulation devices, this device adopts a fully mechanical design, eliminating dependence on electricity, and the flow rate can be precisely adjusted, achieving high-precision and high-reliability regulation of flow and pressure. The regulating device's structure is designed to be detachable and convenient, providing convenience for later maintenance and repair.

[0016] 2. The present invention provides an automatic pressure relief valve with upper and lower chambers. With a simple and purely mechanical structure, the pressure relief valve is automatically closed by the spring preload under normal water pressure. When the water pressure decreases, the one-way characteristic of the one-way shut-off valve creates a pressure difference between the upper and lower chambers of the pressure relief valve, thereby overcoming the spring preload and pushing the double-layer diaphragm to separate from the double-layer valve disc, thereby realizing the drainage of residual water in the pipeline.

[0017] 3. The present invention provides an adjustable filter that achieves three filtration effects—coarse filtration, medium filtration, and fine filtration—as needed by using different stacking patterns between two layers of filter screens with progressively larger filter holes. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a general diagram of the fire water pipeline flow regulation device of the present invention.

[0020] Figure 2 This is a structural diagram of the longitudinal filter screen of the present invention.

[0021] Figure 3 This is a structural diagram of the transverse filter screen of the present invention.

[0022] Figure 4 This is a rough filtration pattern diagram of the adjustable filter of the present invention.

[0023] Figure 5 This is a diagram of the medium filtration mode of the adjustable filter of the present invention.

[0024] Figure 6 This is a diagram illustrating the fine filtration mode of the adjustable filter of the present invention.

[0025] Figure 7 This is a structural diagram of the flow regulator with intercepting area according to the present invention.

[0026] Figure 8 This is a structural diagram of the upper and lower chamber type automatic pressure relief valve of the present invention.

[0027] In the diagram: 1. Inlet pipe; 2. Shut-off valve; 3. Adjustable filter; 4. Flow regulator with cut-off area; 5. Outlet pipe; 6. Automatic pressure relief valve with upper and lower chambers; 7. Water hose interface end cap.

[0028] Vertical filter screen 3-1, horizontal filter screen 3-2;

[0029] Flow regulating valve stem 4-1, flow regulating blade 4-2, throttling plate 4-3, pipe connection flange 4-4, valve stem directional support block 4-5, pressure spring 4-6, convenient release pin 4-7, flow regulating turntable 4-8, connecting pipe 4-9;

[0030] 6-1 Inlet pipe, 6-2 One-way shut-off valve, 6-3 Upper chamber water pressure control branch pipe, 6-4 Diaphragm connecting shaft, 6-5 Upper chamber, 6-6 Pre-tightening spring, 6-7 Outlet, 6-8 Double-layer valve disc, 6-9 Double-layer diaphragm, 6-10 Diaphragm connecting shaft directional support block, 6-11 Lower chamber, 6-12 Valve body. Detailed Implementation

[0031] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0032] Example 1:

[0033] See Figure 1-8 A fire-fighting water pipeline flow regulation device includes an inlet pipe 1, on which a shut-off valve 2 for controlling the flow of pressurized water is installed. The inlet pipe 1 is connected to a flow regulator 4 with a cross-sectional area via an adjustable filter 3, and the other end of the flow regulator 4 is connected to an outlet pipe 5. A hose connector end cap 7 is fixedly installed at the ends of the inlet pipe 1 and the outlet pipe 5, and an automatic pressure relief valve 6 with upper and lower chambers is installed at the end of the hose connector end cap 7. By using the above-mentioned pipeline flow regulation device, the problems of unadjustable flow and pressure, failure to automatically drain residual water leading to accelerated pipeline corrosion, and lack of filtration causing blockage can be solved. It enables manual adjustment of flow and pressure within the pipeline, automatic drainage of residual water, and filtration and anti-blocking of pressurized water within the pipeline.

[0034] Furthermore, the inlet pipe 1 controls the flow of pressurized water through the shut-off valve 2. Under normal water supply conditions, the shut-off valve 2 is open; under maintenance conditions, the shut-off valve 2 is closed. When water supply is needed, only the shut-off valve 2 needs to be opened.

[0035] Furthermore, the adjustable filter 3 includes a longitudinal filter screen 3-1 and a transverse filter screen 3-2. The size of the filter holes in the transverse filter screen 3-2 is progressively smaller. The transverse filter screen 3-2 is superimposed on the longitudinal filter screen 3-1. By adjusting the vertical position of the transverse filter screen 3-2, the size of the filter holes can be adjusted to achieve coarse filtration, medium filtration, and fine filtration, respectively. The filtered residue automatically detaches from the filter screen and is stored at the bottom of the pipe for periodic cleaning. In practical use, by selectively superimposing the longitudinal filter screen 3-1 and the transverse filter screen 3-2, it is possible to effectively filter impurities of different particle sizes, thus achieving the filtration purpose.

[0036] Furthermore, the flow regulating device 4 with intercepting area includes a flow regulating valve stem 4-1, a flow regulating blade 4-2, a flow intercepting plate 4-3, a pipe connecting flange 4-4, a valve stem directional support block 4-5, a pressure spring 4-6, a convenient release pin 4-7, a flow regulating turntable 4-8, and a connecting pipe 4-9. The connecting pipes 4-9 are assembled and connected to each other through the pipe connecting flange 4-4. The flow regulating valve stem 4-1 is slidably supported inside the connecting pipe 4-9 by the valve stem directional support block 4-5. The flow regulating blade 4-2 is installed on the flow regulating valve stem 4-1 and cooperates with the flow intercepting plate 4-3. The pressure spring 4-6 is fitted on the flow regulating valve stem 4-1, and the flow regulating device 4 is kept at a fixed opening by adjusting the pressure spring 4-6. The end of the flow regulating valve stem 4-1 is connected to the flow regulating turntable 4-8 through the convenient release pin 4-7. The flow regulating turntable 4-8 is set outside the water outlet pipe 5. The flow rate can be adjusted using the aforementioned cross-sectional area flow regulator 4.

[0037] Furthermore, by rotating the flow regulating disc 4-8, the flow regulating valve stem 4-1 is moved back and forth, thereby adjusting the intercepting area between the flow regulating blade 4-2 and the throttling plate 4-3, and thus regulating the flow rate of the water. When the flow regulator 4 malfunctions and needs maintenance, the pipe connection flange 4-4 is disassembled to separate the two ends of the pipe, and the flow regulating disc 4-8 is loosened to separate the two ends of the convenient release pin 4-7. The use of the pipe connection flange 4-4 ensures that the connecting pipe 4-9 can be easily disassembled, facilitating subsequent internal maintenance.

[0038] Furthermore, the upper and lower chamber automatic pressure relief valve 6 includes an inlet pipe 6-1, a one-way shut-off valve 6-2, an upper chamber water pressure control branch pipe 6-3, a diaphragm connecting shaft 6-4, an upper chamber 6-5, a preload spring 6-6, an outlet 6-7, a double-layer valve disc 6-8, a double-layer diaphragm 6-9, a diaphragm connecting shaft directional support block 6-10, a lower chamber 6-11, and a valve body 6-12; the one-way shut-off valve 6-2 is installed inside the inlet pipe 6-1, and the other end of the inlet pipe 6-1 is connected to the valve. The valve body 6-12 has a double-layer valve disc 6-8 inside, which cooperates with a double-layer diaphragm 6-9 mounted on a diaphragm connecting shaft 6-4. The diaphragm connecting shaft 6-4 is located inside the valve body 6-12 via a diaphragm connecting shaft directional support block 6-10. A preload spring 6-6 is fitted on the diaphragm connecting shaft 6-4. The valve body 6-12 has an upper chamber 6-5 and a lower chamber 6-11 inside, and an outlet 6-7 is located at the other end of the valve body 6-12. This upper and lower chamber type automatic pressure relief valve 6 enables automatic pressure relief.

[0039] Furthermore, the inlet pipe 6-1 is connected to the upper chamber 6-5 via the upper chamber water pressure control branch pipe 6-3. When high-pressure water passes through the inlet pipe 6-1, the high-pressure water simultaneously enters the upper chamber 6-5 and the lower chamber 6-11 through the one-way shut-off valve 6-2 and the upper chamber water pressure control branch pipe 6-3. Under the action of the pre-tightening spring 6-6, the double-layer diaphragm 6-9 and the double-layer valve disc 6-8 are tightly fitted, the automatic pressure relief valve 6 is in the closed state, and there is no water output from the outlet 6-7. When the water pressure in the inlet pipe 6-1 decreases, the water pressure in the upper chamber 6-5, which is directly connected to the inlet pipe 6-1, decreases synchronously. The water pressure in the lower chamber 6-11 remains unchanged due to the one-way shut-off valve 6-2. When the water pressure in the lower chamber 6-11 is greater than the sum of the water pressure in the upper chamber 6-5 and the pressure of the pre-tightening spring 6-6, the double-layer diaphragm 6-9 is pushed upward, and the remaining water in the pipe is discharged through the outlet 6-7.

[0040] Furthermore, the hose interface end cap 7 consists of two DN65 end caps. After opening the end cap 7, an external hose can be directly connected for fire extinguishing.

[0041] The specific working process and principle of this invention:

[0042] By opening the shut-off valve 2, water is controlled to enter the inlet pipe 1. The water then passes through the adjustable filter 3. By adjusting the vertical position of the horizontal filter screen 3-2, the size of the filter screen holes can be adjusted to achieve coarse, medium, and fine filtration. The filtered residue automatically detaches from the filter screen and is stored at the bottom of the pipe for periodic cleaning. When it is necessary to adjust the water flow rate, the flow rate adjustment disc 4-8 is rotated to move the flow rate adjustment valve rod 4-1 back and forth, thereby adjusting the interception area between the flow rate adjustment blade 4-2 and the intercepting plate 4-3, and thus adjusting the water flow rate. Finally, after adjustment, the water enters the outlet pipe 5 and is supplied through the outlet pipe 5.

Claims

1. A fire service waterway flow regulating device, characterized by: It includes water inlet pipeline (1), water inlet pipeline (1) is installed for controlling the pressure water on-off valve (2) in pipeline, water inlet pipeline (1) is connected with the flow area type flow regulator (4) through adjustable filter (3), the other end of flow area type flow regulator (4) is connected with water outlet pipeline (5);The end of water inlet pipeline (1) and water outlet pipeline (5) is respectively fixedly installed with the water hose interface end cover (7), and the water hose interface end cover (7) is installed on the end of the upper and lower split cavity type automatic pressure relief valve (6); The adjustable filter (3) includes longitudinal filter screen (3-1) and transverse filter screen (3-2), the size of the transverse filter screen (3-2) filter hole is progressively distributed from big to small, the transverse filter screen (3-2) is superimposed with the longitudinal filter screen (3-1), the size of the filter screen hole is adjusted by adjusting the position of the transverse filter screen (3-2) in the vertical direction, thereby realizing rough filtering, medium filtering and fine filtering respectively, and the residues after filtering are automatically separated from the filter screen to the pipeline below for storage and regular cleaning.

2. A fire water line flow regulating device according to claim 1, wherein: In normal water supply working state, the stop valve (2) is opened;The entire device is in maintenance state, the stop valve (2) is closed.

3. The fire protection water piping flow regulating device according to claim 1, wherein: The flow area type flow regulator (4) includes flow regulating valve rod (4-1), flow regulating blade (4-2), intercepting disc (4-3), pipeline connection flange (4-4), valve rod directional support block (4-5), pressure spring (4-6), convenient disengagement pin (4-7), flow regulating turntable (4-8) and communication pipe (4-9);The communication pipe (4-9) is assembled and connected through the pipeline connection flange (4-4) between the communication pipe (4-9), the inside of the communication pipe (4-9) is slidably supported by the flow regulating valve rod (4-1) through the valve rod directional support block (4-5), the flow regulating valve rod (4-1) is provided with the flow regulating blade (4-2), the flow regulating blade (4-2) is matched with the intercepting disc (4-3), the flow regulating valve rod (4-1) is provided with the pressure spring (4-6), and the flow regulator (4) is kept at a fixed opening by adjusting the pressure spring (4-6);The end of the flow regulating valve rod (4-1) is connected with the flow regulating turntable (4-8) through the convenient disengagement pin (4-7), and the flow regulating turntable (4-8) is arranged outside the water outlet pipeline (5).

4. A fire water pipe flow regulating device according to claim 3, wherein: By rotating the flow regulating turntable (4-8) to drive the flow regulating valve rod (4-1) to move forward and backward, the intercepting area between the flow regulating blade (4-2) and the intercepting disc (4-3) is adjusted, and then the water flow size is adjusted;When the flow regulator (4) needs to be repaired, the pipeline connection flange (4-4) is disassembled to separate the two ends of the pipeline, and the convenient disengagement pin (4-7) is separated at both ends by loosening the flow regulating turntable (4-8).

5. The fire protection water piping flow regulating device according to claim 1, wherein: The upper and lower cavity type automatic pressure relief valve (6) comprises a water inlet pipe (6-1), a one-way stop valve (6-2), an upper cavity water pressure control branch pipe (6-3), a diaphragm connecting shaft (6-4), an upper cavity (6-5), a pre-tightening spring (6-6), a water outlet (6-7), a double-layer valve disc (6-8), a double-layer diaphragm (6-9), a diaphragm connecting shaft directional support block (6-10), a lower cavity (6-11) and a valve body (6-12). The one-way stop valve (6-2) is installed in the water inlet pipe (6-1), the other end of the water inlet pipe (6-1) is connected with the valve body (6-12), the valve body (6-12) is internally provided with the double-layer valve disc (6-8), the double-layer valve disc (6-8) is matched with the double-layer diaphragm (6-9) installed on the diaphragm connecting shaft (6-4), the diaphragm connecting shaft (6-4) is arranged in the valve body (6-12) through the diaphragm connecting shaft directional support block (6-10), the pre-tightening spring (6-6) is sleeved on the diaphragm connecting shaft (6-4), the valve body (6-12) is internally provided with the upper cavity (6-5) and the lower cavity (6-11), and the other end of the valve body (6-12) is provided with the water outlet (6-7).

6. A fire water line flow regulating device according to claim 5, wherein: The water inlet pipe (6-1) is communicated with the upper cavity (6-5) through the upper cavity water pressure control branch pipe (6-3); when high-pressure water flows in the water inlet pipe (6-1), the high-pressure water enters the upper cavity (6-5) and the lower cavity (6-11) through the one-way stop valve (6-2) and the upper cavity water pressure control branch pipe (6-3) at the same time, under the action of the pre-tightening spring (6-6), the double-layer diaphragm (6-9) is tightly attached to the double-layer valve disc (6-8), the automatic pressure relief valve (6) is in a closed state, and the water outlet (6-7) has no water outlet; when the water pressure of the water inlet pipe (6-1) decreases, the water pressure of the upper cavity (6-5) directly communicated with the water inlet pipe (6-1) is reduced synchronously, the water pressure of the lower cavity (6-11) remains unchanged due to the one-way stop valve (6-2), when the water pressure of the lower cavity (6-11) is greater than the sum of the water pressure of the upper cavity (6-5) and the pressure of the pre-tightening spring (6-6), the double-layer diaphragm (6-9) is pushed upward, and the residual water in the pipeline is discharged through the water outlet (6-7).

7. A fire protection water piping flow regulating device according to claim 5, wherein: The water hose interface end cover (7) is two DN65 end covers, and the water hose can be directly connected after the end cover (7) is opened, so that the fire extinguishing can be carried out.

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