Fire valve with cleaning function

Abstract

The fire valve with the cleaning function comprises a valve body, a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are connected with the two sides of the valve body respectively, an injection opening is formed in the water inlet pipe, and a medicament injection mechanism is connected to the injection opening; a filter screen is arranged at a connecting port of the water inlet pipe and the valve body, a flow guide groove is formed in the position, close to the filter screen, of the inner side wall of the lower portion of the water inlet pipe, a sewage draining opening is formed in the bottom of the flow guide groove, and a sewage draining pipe is connected to the sewage draining opening. According to the fire valve with the cleaning function, the water inlet pipe can be effectively cleaned when the fire valve is not used for a long time, water scaling in the water inlet pipe is reduced, scaling particles and foreign matter can be discharged in time, the foreign matter and the particles are prevented from entering the valve body to cause damage, smooth water flow is ensured, and the service life of the fire valve is prolonged. The normal operation performance of the fire valve is guaranteed, and the service life of the fire valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fire valve bodies, in particular to a fire valve with a cleaning function. Background Art

[0002] Firefighting refers to the activities and technical means of preventing and fighting fires, aiming to protect the lives and property of people. Firefighting work includes prevention, monitoring, alarm, escape, firefighting and emergency rescue. The fire valve is a key component in the firefighting system. It is used to control the flow of the fire water system and provide fire extinguishing function when a fire occurs. It can effectively control and regulate the fire water flow and help firefighters respond to fire quickly.

[0003] After the existing fire valve has not been used for a long time, scale is likely to accumulate on the inside of the water inlet pipe of the valve body, making the valve difficult to open or close, affecting the smooth flow of water, increasing the force required to operate the valve, and reducing the operating performance of the valve. Scaling will also cause corrosion and damage to the valve body, reducing the service life of the valve body. Utility Model Content

[0004] The utility model aims to provide a fire valve with a cleaning function, which can solve the problem that scale is easily accumulated on the inner side of the water inlet pipe of the existing valve body, resulting in reduced valve body operating performance and affecting the service life of the valve body.

[0005] The utility model provides a fire valve with a cleaning function, comprising a valve body and a water inlet pipe and a water outlet pipe respectively connected to two sides of the valve body, an injection port is arranged on the water inlet pipe, and a medicine injection mechanism is connected to the injection port; a filter screen is arranged at the connecting port between the water inlet pipe and the valve body, a guide groove is arranged on the lower inner side wall of the water inlet pipe at a position close to the filter screen, a sewage outlet is arranged at the bottom of the guide groove, and a sewage outlet is connected to the sewage outlet.

[0006] According to a fire valve with a cleaning function provided by the utility model, the drug injection mechanism includes a drug-dosing pipe and a one-way valve, the lower end of the drug-dosing pipe is connected to the input end of the one-way valve, and the output end of the one-way valve is connected to the injection port; a top plate is fixedly provided at the upper end of the drug-dosing pipe, a piston is provided in the drug-dosing pipe, and the piston is sealingly and slidingly matched with the drug-dosing pipe; the piston is rotatably connected to the lower end of the threaded rod, the upper end of the threaded rod passes through the top plate and is fixedly connected to the turntable, and the threaded rod is threadedly matched with the top plate; a first threaded hole and a second threaded hole are respectively provided on the side wall of the drug-dosing pipe from top to bottom, and a first screw plug and a second screw plug are respectively provided at the first threaded hole and the second threaded hole.

[0007] According to a fire valve with a cleaning function provided by the utility model, a first flange is provided at the upper end of the one-way valve, and a second flange is provided at the lower end of the dosing pipeline, and the first flange and the second flange are connected and fixed by a plurality of connecting bolts.

[0008] According to the fire valve with cleaning function provided by the utility model, the lower end of the threaded rod is rotatably connected to the piston through a bearing.

[0009] According to a fire valve with a cleaning function provided by the utility model, a first mounting plate is provided on the outer side wall of the lower end of the one-way valve, a first sealing gasket is provided on the lower end surface of the first mounting plate, and the one-way valve is sealed and installed with the injection port through the first mounting plate.

[0010] According to a fire valve with cleaning function provided by the utility model, the output end of the sewage pipe is connected to the input end of the storage pipe, a first butterfly valve is provided at the output end of the sewage pipe, and a second butterfly valve is provided at the output end of the storage pipe.

[0011] According to a fire valve with a cleaning function provided by the utility model, a second mounting plate is provided on the outer side wall of the input end of the sewage pipe, a second sealing gasket is provided on the upper end surface of the second mounting plate, and the sewage pipe is sealed and installed with the sewage outlet through the second mounting plate.

[0012] A fire valve with a cleaning function provided by the utility model also includes a valve stem, a valve plate, a cover plate and a rotating handle, the cover plate is installed on the upper end of the valve body, the upper end of the valve stem is connected to the rotating handle, the lower end of the valve stem passes through the cover plate and extends into the valve body, the valve plate is arranged in the valve body, and the valve plate is arranged on the valve stem.

[0013] According to a fire valve with a cleaning function provided by the utility model, a rubber pad is provided between the cover plate and the valve body; a circle of first grooves is provided on the lower end surface of the cover plate, and a circle of second grooves is provided on the upper end surface of the valve body, and the rubber pad is provided with a first protrusion adapted to the first groove and a second protrusion adapted to the second groove, the first protrusion is sealed in the first groove, and the second protrusion is sealed in the second groove.

[0014] According to a fire valve with a cleaning function provided by the utility model, a mounting frame is provided on the outer circle of the filter screen, a circle of mounting grooves is provided on the inner side wall of the water inlet pipe, and the mounting frame is installed in the mounting grooves.

[0015] The fire valve with cleaning function provided by the utility model comprises a valve body and a water inlet pipe and a water outlet pipe respectively connected to two sides of the valve body; an injection port is provided on the water inlet pipe, and a medicine injection mechanism is connected at the injection port to inject chemical agents such as retarders and descaling agents to prevent scaling into the water inlet pipe; a filter screen is provided at the connecting port between the water inlet pipe and the valve body, a guide groove is provided at a position close to the filter screen on the lower inner wall of the water inlet pipe, a sewage outlet is provided at the bottom of the guide groove, and a sewage outlet is connected to the sewage outlet. After the water in the water inlet pipe is filtered through the filter screen, scaling particles and foreign matter in the water can be prevented from entering the interior of the valve body, and the filtered particles and foreign matter can be accumulated at the bottom of the guide groove and can be discharged through the sewage pipe. Therefore, the fire valve with cleaning function provided by the utility model can effectively clean the water inlet pipe when the fire valve has not been used for a long time, reduce water scaling inside the water inlet pipe, and can discharge scaling particles and foreign matter in time, preventing foreign matter and particles from entering the valve body and causing damage, thereby ensuring smooth water flow, protecting the normal operating performance of the fire valve, and extending the service life of the fire valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the fire protection valve with cleaning function of the utility model;

[0018] Figure 2 It is a three-dimensional cross-sectional view of the fire valve with cleaning function of the utility model;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 4 for Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0021] Figure 5 It is a three-dimensional cross-sectional view of the medicine injection mechanism in the fire valve with cleaning function of the utility model;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of the structure at C in the middle;

[0023] Figure 7 It is a schematic diagram of the structure of the sewage pipe and the storage pipe in the fire valve with cleaning function of the utility model.

[0024] Description of reference numerals:

[0025] 1. valve body; 101. second groove; 2. water inlet pipe; 201. mounting groove; 3. water outlet pipe;

[0026] 4. Drug injection mechanism; 401. Dosing pipeline; 402. One-way valve; 403. Top plate; 404. Piston; 405. Threaded rod; 406. Turntable; 407. First threaded hole; 408. Second threaded hole; 409. First screw plug; 410. Second screw plug; 411. First flange; 412. Second flange; 413. Connecting bolt; 414. Bearing; 415. First mounting plate; 416. First sealing gasket;

[0027] 5. Filter screen; 6. Guide groove; 7. Drain pipe; 8. Mounting frame; 9. Storage pipe; 10. First butterfly valve; 11. Second butterfly valve; 12. Second mounting plate; 13. Second sealing gasket; 14. Valve stem; 15. Valve plate; 16. Cover plate; 161. First groove; 17. Rotating handle; 18. Rubber pad. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] like Figures 1 to 7 As shown, the fire valve with cleaning function of the embodiment of the utility model comprises a valve body 1 and a water inlet pipe 2 and a water outlet pipe 3 respectively connected to the two sides of the valve body 1. An injection port is provided on the water inlet pipe 2, and a reagent injection mechanism 4 is connected to the injection port. The reagent injection mechanism 4 is used to inject chemical agents such as retarders and descaling agents to prevent scaling into the water inlet pipe 2.

[0032] A filter screen 5 is provided at the connection port between the water inlet pipe 2 and the valve body 1, a guide groove 6 is provided on the lower inner wall of the water inlet pipe 2 near the filter screen 5, a sewage outlet is provided at the bottom of the guide groove 6, and a sewage outlet is connected to a sewage pipe 7. The filter screen 5 can filter the water flowing into the valve body 1 from the water inlet pipe 2, thereby preventing the scale particles and foreign matter in the water from entering the interior of the valve body 1, and the filtered particles and foreign matter can be accumulated at the bottom of the guide groove 6 and can be discharged through the sewage pipe 7.

[0033] Therefore, the fire valve with cleaning function in the embodiment of the utility model can effectively clean the water inlet pipe 2 when the fire valve has not been used for a long time, reduce water scaling inside the water inlet pipe 2, and can discharge scaling particles and foreign matter in time, preventing foreign matter and particles from entering the valve body 1 and causing damage, thereby ensuring smooth water flow, protecting the normal operating performance of the fire valve, and extending the service life of the fire valve.

[0034] In some embodiments of the utility model, the medicine injection mechanism 4 includes a dosing pipe 401 and a one-way valve 402, the lower end of the dosing pipe 401 is connected to the input end of the one-way valve 402, and the output end of the one-way valve 402 is connected to the injection port on the water inlet pipe 2. A top plate 403 is fixedly provided at the upper end of the dosing pipe 401, and a piston 404 is provided in the dosing pipe 401, and the piston 404 is sealed and slidably matched with the inner side wall of the dosing pipe 401. Among them, the lower end of the threaded rod 405 is rotatably connected to the piston 404 through a bearing 414, and the upper end of the threaded rod 405 passes through the top plate 403 and is fixedly connected to the turntable 406, and the threaded rod 405 is threadedly matched with the top plate. A first threaded hole 407 and a second threaded hole 408 are respectively opened on the side wall of the dosing pipe 401 from top to bottom, and a first screw plug 409 and a second screw plug 410 are respectively provided at the first threaded hole 407 and the second threaded hole 408.

[0035] Among them, a first flange 411 is provided at the upper end of the one-way valve 402, and a second flange 412 is provided at the lower end of the dosing pipe 401. The first flange 411 and the second flange 412 are connected and fixed by multiple connecting bolts 413, thereby realizing reliable connection and assembly between the dosing pipe 401 and the one-way valve 402.

[0036] Among them, a circle of first mounting plate 415 is provided on the outer wall of the lower end of the one-way valve 402, and a first sealing gasket 416 is provided on the lower end surface of the first mounting plate 415. The one-way valve 402 is sealed and installed with the injection port on the water inlet pipe 2 through the first mounting plate 415, thereby realizing a reliable sealing installation of the output end of the one-way valve 402 at the injection port.

[0037] When the valve body 1 is not used for a long time, the first screw plug 409 is rotated to remove the first screw plug 409 from the first threaded hole 407, and then a chemical agent such as a retarder and a descaling agent to prevent scaling is injected through the first threaded hole 407, and then the first screw plug 409 is threadedly connected to the first threaded hole 407, and the piston 404 is located above the first threaded hole 407. Then the turntable 406 is rotated to drive the threaded rod 405 to rotate through the turntable 406, so that the threaded rod 405 moves downward with the top plate 403 as a fulcrum, and the bearing 414 cooperates to push the piston 404 downward, so that the retarder and descaling agent inside the dosing pipe 401 enter the water inlet pipe 2 through the one-way valve 402, thereby reducing water scaling inside the water inlet pipe 2.

[0038] In some embodiments of the utility model, a mounting frame 8 is provided on the outer circle of the filter screen 5, and a circle of mounting grooves 201 is provided on the inner wall of the water inlet pipe 2, and the mounting frame 8 is installed in the mounting groove 201, thereby realizing the reliable installation of the filter screen 5 at the output port of the water inlet pipe 2.

[0039] In some embodiments of the utility model, the output end of the sewage pipe 7 is connected to the input end of the storage pipe 9 , a first butterfly valve 10 is provided at the output end of the sewage pipe 7 , and a second butterfly valve 11 is provided at the output end of the storage pipe 9 .

[0040] When in use, by opening the first butterfly valve 10, the granular foreign matter accumulated in the guide groove 6 can be stored in the storage pipe 9 through the sewage pipe 7, and then the first butterfly valve 10 is closed and the second butterfly valve 11 is opened to discharge the granular foreign matter stored in the storage pipe 9, which is easy to operate.

[0041] In some embodiments of the utility model, a second mounting plate 12 is provided on the outer side wall of the input end of the sewage pipe 7, and a second sealing gasket 13 is provided on the upper end surface of the second mounting plate 12. The sewage pipe 7 is sealed and installed with the sewage outlet on the water inlet pipe 2 through the second mounting plate 12, thereby realizing reliable sealing installation of the sewage pipe 7 at the sewage outlet of the water inlet pipe 2.

[0042] In some embodiments of the utility model, the fire valve with cleaning function also includes a valve stem 14, a valve plate 15, a cover plate 16 and a rotating handle 17. The cover plate 16 is installed on the upper end of the valve body 1, the upper end of the valve stem 14 is connected to the rotating handle 17, the lower end of the valve stem 14 passes through the cover plate 16 and extends into the valve body 1, the valve plate 15 is arranged in the valve body 1, and the valve plate 15 is arranged on the valve stem 14.

[0043] Among them, a rubber pad 18 is provided between the cover plate 16 and the valve body 1. A circle of first grooves 161 is provided on the lower end surface of the cover plate 16, and a circle of second grooves 101 is provided on the upper end surface of the valve body 1. The rubber pad 18 is provided with a first protrusion adapted to the first groove 161 and a second protrusion adapted to the second groove 101. The first protrusion is sealed in the first groove 161, and the second protrusion is sealed in the second groove 101. That is, by providing the first protrusion and the second protrusion on the rubber pad 18, and then inserting the first protrusion and the second protrusion into the first groove 161 and the second groove 101 respectively, the rubber pad 18 can form a step structure, thereby increasing the contact area between the rubber pad 18 and the cover plate 16 and the valve body 1. When applying pressure during installation, the same force will be distributed on a larger contact surface, making the seal tighter, which not only effectively improves the sealing effect, but also has a better ability to resist vibration and impact, and reduces the risk of leakage.

[0044] The working principle of the fire protection valve with cleaning function in the embodiment of the utility model is as follows:

[0045] When the fire valve is not used for a long time, the first threaded hole 407 is opened by rotating the first screw plug 409, and chemical agents such as retarders and descaling agents to prevent scaling are injected into the dosing pipe 401 through the first threaded hole 407, and then the first screw plug 409 is screwed into the first threaded hole 407. Then, by rotating the turntable 406, the turntable 406 drives the threaded rod 405 to rotate, so that the threaded rod 405 moves downward with the top plate 403 as the fulcrum, and the bearing 414 cooperates to push the piston 404 downward, so that the retarder and descaling agent inside the dosing pipe 401 are injected into the water inlet pipe 2 through the one-way valve 402, thereby reducing the scaling of water inside the water inlet pipe 2. During use, intermittent progressive injection can be adopted to save maintenance time. When the piston 404 reaches the position of the second threaded hole 408, the second screw plug 410 is rotated to open the second threaded hole 408, and then the turntable 406 is rotated to move the piston 404 to the upper position of the first threaded hole 407, and then the second screw plug 410 is screwed into the second threaded hole 408, so as to facilitate the re-addition of retarder and descaling agent into the dosing pipe 401.

[0046] When water in the water inlet pipe 2 enters the valve body 1 , it can be filtered through the filter 5 so that the filtered particulate foreign matter accumulates at the bottom of the guide groove 6 , thereby preventing the particulate foreign matter that scales in the water from entering the valve body 1 .

[0047] When it is necessary to discharge and clean the particulate foreign matter accumulated in the guide groove 6, first open the first butterfly valve 10 to allow the particulate foreign matter accumulated in the guide groove 6 to enter the storage pipe 9 through the sewage pipe 7, then close the first butterfly valve 10, and open the second butterfly valve 11 to discharge the particulate foreign matter inside the storage pipe 9.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A fire valve with cleaning function, comprising a valve body and a water inlet pipe and a water outlet pipe respectively connected to both sides of the valve body, characterized in that: An injection port is provided on the water inlet pipe, and a medicine injection mechanism is connected to the injection port; a filter screen is provided at the connecting port between the water inlet pipe and the valve body, a guide groove is provided on the lower inner wall of the water inlet pipe near the filter screen, a sewage outlet is provided at the bottom of the guide groove, and a sewage outlet is connected to the sewage pipe.

2. The fire valve with cleaning function according to claim 1, characterized in that: The medicine injection mechanism includes a dosing pipeline and a one-way valve, the lower end of the dosing pipeline is connected to the input end of the one-way valve, and the output end of the one-way valve is connected to the injection port; a top plate is fixedly provided at the upper end of the dosing pipeline, a piston is provided in the dosing pipeline, and the piston is in sealing and sliding cooperation with the dosing pipeline; the piston is rotatably connected to the lower end of the threaded rod, the upper end of the threaded rod passes through the top plate and is fixedly connected to the turntable, and the threaded rod is in threaded cooperation with the top plate; a first threaded hole and a second threaded hole are respectively provided on the side wall of the dosing pipeline from top to bottom, and a first screw plug and a second screw plug are respectively provided at the first threaded hole and the second threaded hole.

3. The fire valve with cleaning function according to claim 2, characterized in that: A first flange is provided at the upper end of the one-way valve, and a second flange is provided at the lower end of the dosing pipeline. The first flange and the second flange are connected and fixed by a plurality of connecting bolts.

4. The fire valve with cleaning function according to claim 2, characterized in that: The lower end of the threaded rod is rotatably connected to the piston through a bearing.

5. The fire valve with cleaning function according to claim 2, characterized in that: A first mounting plate is provided on the outer side wall of the lower end of the one-way valve, a first sealing gasket is provided on the lower end surface of the first mounting plate, and the one-way valve is sealed and installed with the injection port through the first mounting plate.

6. The fire valve with cleaning function according to claim 1, characterized in that: The output end of the sewage pipe is connected to the input end of the storage pipe. A first butterfly valve is arranged at the output end of the sewage pipe, and a second butterfly valve is arranged at the output end of the storage pipe.

7. The fire valve with cleaning function according to claim 1, characterized in that: A second mounting plate is provided on the outer side wall of the input end of the sewage pipe, a second sealing gasket is provided on the upper end surface of the second mounting plate, and the sewage pipe is sealed and installed with the sewage outlet through the second mounting plate.

8. The fire valve with cleaning function according to claim 1, characterized in that: It also includes a valve stem, a valve plate, a cover plate and a rotating handle, wherein the cover plate is installed on the upper end of the valve body, the upper end of the valve stem is connected to the rotating handle, the lower end of the valve stem passes through the cover plate and extends into the valve body, the valve plate is arranged in the valve body, and the valve plate is arranged on the valve stem.

9. The fire valve with cleaning function according to claim 8, characterized in that: A rubber pad is provided between the cover plate and the valve body; a circle of first grooves is provided on the lower end surface of the cover plate, and a circle of second grooves is provided on the upper end surface of the valve body; the rubber pad is provided with a first protrusion adapted to the first groove and a second protrusion adapted to the second groove, the first protrusion is sealed in the first groove, and the second protrusion is sealed in the second groove.

10. The fire valve with cleaning function according to claim 1, characterized in that: The outer circle of the filter screen is provided with a mounting frame, the inner side wall of the water inlet pipe is provided with a circle of mounting grooves, and the mounting frame is installed in the mounting grooves.

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