A groove connection type fire water pump connector

Abstract

The present invention belongs to the field of fire protection technology, and in particular relates to a groove-connected fire pump coupler, comprising a main body, wherein the main body is provided with a handwheel, a valve stem and a valve plate, the support member comprises a fixed block connected to the main body, the fixed block is rotatably connected to a support plate abutting the valve plate, the bottom of the fixed block is provided with a ring portion for accommodating the downward rotation of the support plate, and the rotation of the rotating member drives the bottom pushing block to rotate synchronously and embed into the card slot, and at the same time abuts the arc surface on the rack through the arc surface, thereby pushing the entire rack backward and driving the meshing driving wheel to be transmitted to the transmission wheel, so that the transmission wheel rotates synchronously and drives the support plate to rotate downward, so that the aperture of the support member abutting the valve plate is expanded, thereby the water entering the main body joint flows more smoothly into the bottom pipe of the main body, and at the same time, when the water flow rate remains unchanged, the water flow entering the expanded port connecting with the bottom pipe will not be too turbulent, the inlet flow rate is reduced, and the water flow is more stable.

Description

Technical Field

[0001] The invention discloses a connector, in particular to a groove-connected fire water pump connector. Background Art

[0002] The water pump coupler is a device used in conjunction with a water pump in firefighting. When a fire occurs, the water pump of the fire truck can be quickly and conveniently connected to the fire-fighting equipment in the building through the interface of the coupler, and water is supplied to increase pressure, so that the indoor fire-fighting equipment can obtain sufficient pressurized water source to extinguish fires on different floors. This effectively solves the problem of fire trucks having difficulty extinguishing fires in buildings or the inability of indoor fire-fighting equipment to extinguish fires due to lack of sufficient pressurized water source.

[0003] In the prior art, when water is injected into the structure to increase the pressure, water may flow back from the mouth due to excessive water pressure and excessive water inflow on both sides. Therefore, a check valve is provided at the interface of the prior art coupler to prevent water from flowing back. However, due to the setting of the check valve, if the water pressure is too high, it will fill the entire coupler. If the water pressure cannot be eliminated in time or the water flow cannot be slowed down, the coupler may burst. Therefore, a safety valve is added in the prior art. When the pressure is too high, the safety valve spring is compressed and the drain port is opened to drain and relieve the pressure. However, the pressure relief port is generally small, and the fire-fighting water contains more impurities in the water, so it is easy to get clogged during use. If it is clogged, the pressure cannot be relieved. Excessive pressure will damage the internal structure of the coupler and even cause the pipe to burst. Therefore, a new solution is proposed to enlarge the drain port and guide the water flow away for secondary pressure relief. Summary of the Invention

[0004] The object of the present invention is to provide a groove connection type fire pump coupler in order to solve the above problems.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a groove connection type fire pump coupler, comprising a main body, the main body being provided with a hand wheel, a valve stem and a valve plate, a support member abutting the valve plate being provided in the main body, two interfaces being provided on both sides of the main body, a check valve being provided on the interfaces, a safety valve for pressure relief being provided in the middle of the main body, a spring being provided inside the safety valve, and the opening and closing of the safety valve being controlled by the elastic force of the spring, characterized in that the support member comprises a fixed block connected to the main body, a support plate abutting the valve plate being rotatably connected to the fixed block, and a plurality of support plates being annularly distributed, an annular portion being provided at the bottom of the fixed block for accommodating the downward rotation of the support plate, a rotating member being rotatably connected to the fixed block, a pushing block being provided at the bottom of the rotating member, a rack being slidably connected to the fixed block, a driving wheel 1 being meshed with the rack being provided at the rear end of the supporting plate, a transmission wheel meshed with the driving wheel 1 being clamped at the rotatable connection between the supporting plate and the fixed block, and the transmission wheel and the support plate being staggered in vertical arrangement, and a driving device for driving the rotating member to rotate being provided on the fixed block and the main body;

[0006] The rack is provided with a slot for accommodating the push block, the contact surface between the push block and the rack is an arc surface, a spring is provided between the rack and the fixed block to push the rack to reset, the diameter of the driving wheel is larger than the diameter of the transmission wheel, and the fixed block is provided with a drainage device for drainage.

[0007] Preferably, the driving device includes a bracket arranged at the upper end of the fixed block, the bracket is rotatably connected to a driving wheel 2 engaged with the rotating member, the outer ring of the rotating member is provided with a tooth 1 engaged with the driving wheel, the driving wheel 2 is provided with a rotating shaft embedded in the bracket, a torsion spring is provided between the rotating shaft and the bracket, a protrusion is provided on the rotating shaft, the bracket is provided with a limiting groove 1 for accommodating the embedding of the protrusion and limiting the rotation of the protrusion, the bottom of the limiting groove 1 is connected to an annular groove for accommodating the rotation of the protrusion, a rubber bag for supporting and blocking the protrusion from entering the annular groove is provided in the annular groove, and the rubber bag is filled with gas, the bracket is slidably connected to an extrusion block, a spring 3 is provided between the extrusion block and the bracket, and the bottom of the extrusion block is provided with a plug-in for inserting the rubber bag.

[0008] Preferably, the driving wheel 2 and the rotating member are staggered up and down, the elastic force of the torsion spring is greater than the elastic force of the spring 1 and the spring 2, and the elastic force of the spring 3 is greater than the elastic force of the safety valve spring.

[0009] Preferably, an extension portion is provided on the valve plate, a limit block embedded in the rotating member is provided on the extension portion, and a second limit groove for accommodating the limit block is provided on the rotating member.

[0010] Preferably, a torsion piece is provided at the upper end of the fixed block outside the main body, a rotating shaft is provided on the torsion piece, and the rotating shaft passes through the main body and extends to the inside of the main body, a second tooth is provided on the upper surface of the rotating piece, and the second tooth and the second limit groove are staggered front and back, and a rotating wheel is provided on the rotating shaft, which engages with the second tooth on the upper surface of the rotating piece.

[0011] Preferably, the drainage device includes a drainage hole 1 provided through the fixed block at the support plate, a drainage hole 2 provided at the fixed block of the main body which is connected to the drainage hole 1, and an annular water storage part for accommodating water flow entering is provided outside the main body.

[0012] Preferably, a kit is slidably connected in the drainage hole 1, and the kit is connected to the support plate through a connector, and the connector is deformable. The connector is located at the rear end of the kit and is provided with a scraper for cleaning the drainage hole 1.

[0013] Preferably, the drainage hole 1 is provided with a guide groove 1 and a guide groove 2 for guiding the movement of the sleeve and the scraper, and the guide groove 1 and the guide groove 2 are cross-shaped, and the drainage hole 1 is close to the end of the main body to accommodate the sleeve to pass through.

[0014] Preferably, the fixed block is slidably connected with a receiving piece that abuts against and blocks the support plate, two springs are provided between the receiving piece and the fixed block to push the receiving piece to move outward, and the receiving piece is located at the lower end of the support plate, and two slots are provided on the receiving piece. The rotating part is provided with a blocking block that is embedded in the second slot and blocks the receiving piece from moving backward, and the surface of the blocking block that abuts against the receiving piece and pushes the receiving piece to return to its original position is an arc surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The cam is then opened, and the cam is engaged, and the cam is engaged with the gear, and the gear is engaged with the gear, and the cam is engaged with the gear, and the gear is engaged with the gear, and the cam is engaged with the gear, and the gear is engaged with the gear, and the cam is engaged with the gear, and the gear is engaged with the gear, and the cam is engaged with the gear, and the gear is engaged with the gear.

[0017] Secondly, when the safety valve is damaged and cannot relieve pressure, the water pressure in the main body increases, and the pressure enters the extrusion block, causing the extrusion block to move downward to compress the spring three, and the plug-in at the bottom of the extrusion block is embedded in the rubber bag, so that the damaged rubber bag cancels the obstruction of the protrusion, and the protrusion moves down and breaks away from the restriction and enters the annular groove. At the same time, the rotating shaft and the driving wheel two also move downward, and the driving wheel two meshes with the teeth of the rotating part one. After breaking away from the obstruction of the protrusion, the elastic force of the torsion spring is released to drive the rotating shaft to rotate, so that the rotating shaft drives the driving wheel two to rotate, and drives the meshed rotating part to rotate synchronously, controlling the support plate to open, thereby achieving the effect of automatic opening. In addition, since the elastic force of the spring three at the bottom of the extrusion block is greater than the elastic force of the spring in the safety valve, it is ensured that only when the safety valve cannot relieve pressure, the extrusion block acts as a spare part, automatically driving the control support plate to open, so that the water flow is slightly relieved;

[0018] Thirdly, after the support plate rotates downward, the connecting piece is pulled to move the driving kit and the scraper piece synchronously, and the drainage holes on the fixed block are exposed and opened, so that water can be discharged from several drainage holes, enter the two drainage ports of the main body, and flow into the water storage part. The water storage part can be connected to an external drainage pipe to allow water to flow away, relieve part of the water pressure, and at the same time the pipe mouth is expanded, and the water flow is slowed down after it stabilizes, reducing the risk of bursting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a groove-connected fire pump coupler Figure 1 ;

[0020] Figure 2 A schematic diagram of the structure of a groove-connected fire pump coupler Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the internal structure of a groove-connected fire pump coupler;

[0022] Figure 4 It is a structural diagram of the valve plate and the fixed block;

[0023] Figure 5 Schematic diagram of the internal structure of the valve plate and the fixed block;

[0024] Figure 6 for Figure 5 A local enlarged schematic diagram at point A;

[0025] Figure 7 It is a schematic diagram of the partial structure of the valve plate and the fixed block;

[0026] Figure 8 This is a structural diagram of a groove-connected fire pump coupler drive device;

[0027] Figure 9It is a structural diagram of the fixed block;

[0028] Figure 10 Schematic diagram of the drainage system.

[0029] Reference numerals: 1, main body; 2, valve stem; 3, valve plate; 4, second limiting groove; 5, interface; 6, safety valve; 7, fixing block; 8, support plate; 9, annular portion; 10, rotating member; 11, pushing block; 12, rack; 13, driving wheel 1; 14, transmission wheel; 15, first clamping groove; 16, first spring; 17, receiving plate; 18, second spring; 19, second clamping groove; 20, blocking block; 21, bracket; 22, second driving wheel; 23, rotating shaft; 24. Tooth 1; 25. Torsion spring; 26. Bump; 27. Limiting groove 1; 28. Annular groove; 29. ​​Rubber bag; 30. Extrusion block; 31. Spring 3; 32. Plug-in unit; 33. Twisting member; 34. Rotating shaft; 35. Tooth 2; 36. Rotating wheel; 37. Drain hole 1; 38. Limiting block; 39. Water storage member; 40. Kit; 41. Connecting member; 42. Scraping member; 43. Guide groove 1; 44. Guide groove 2; 45. Extension. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. They 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 orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] A groove connection type fire pump coupler, such as Figures 1-10As shown, it includes a main body 1, which is provided with a handwheel, a valve stem 2 and a valve plate 3. A support member abutting against the valve plate 3 is provided in the main body 1, two interfaces 5 are provided on both sides of the main body 1, and a check valve is provided on the interface 5. A safety valve 6 for pressure relief is provided in the middle of the main body 1, and a spring is provided inside the safety valve 6, and the opening and closing of the safety valve 6 is controlled by the spring elastic force. In the prior art, this device is used to open the interface 5 first, and then connect the joint or water hose of the fire truck to the interface 5, and then rotate the handwheel of the main body 1, and the valve stem 2 is continuously engaged through the inner thread of the handwheel to push the valve stem 2 upward The valve stem 2 is restricted by the main body 1 and can only move up and down. The rotation drives the valve stem 2 to move up, which can drive the valve plate 3 to move up synchronously and away from the support. The bottom of the main body 1 is opened, and the water supply flows into the pipe along the bottom of the main body 1 from the interface 5 and is discharged into the fire-fighting pipe to supply water to the fire-fighting pipe. If the safety valve 6 is damaged but water supply is still needed, the boosting device can only be turned off or the pressure can be manually released. However, on high floors, it will cause insufficient water pressure. If the pressure is continuously increased, long-term use will cause greater damage to the pipeline and may cause damage and bursting.

[0032] The support member includes a fixed block 7 connected to the main body 1. The fixed block 7 is rotatably connected to a support plate 8 that abuts the valve plate 3. The support plates 8 are distributed in a ring. A rotating member 10 is rotatably connected to the fixed block 7. A push block 11 is provided at the bottom of the rotating member 10. A rack 12 is slidably connected to the fixed block 7. A drive wheel 13 is provided at the rear end of the support plate 8 to engage with the rack 12. A transmission wheel 14 is clamped at the rotational connection between the support plate 8 and the fixed block 7 to engage with the drive wheel 13. The transmission wheel 14 is staggered with the support plate 8. A driving device for driving the rotating member 10 is provided on the fixed block 7 and the main body 1. A slot 15 is provided on the rack 12 to accommodate the push block 11. The abutting surface between the push block 11 and the rack 12 is an arc surface. A spring 16 is provided between the rack 12 and the fixed block 7 to push the rack 12 back. The diameter of the drive wheel 13 is larger than that of the transmission wheel 14. The fixed block 7 is provided with a drainage device for draining water. After using the device of the present application, if the safety valve 6 is damaged, the safety valve 6 is blocked and cannot move upward, the internal spring cannot be compressed, and thus the pressure relief cannot be achieved. At this time, the internal water pressure increases, and the driving component is turned on to rotate the rotating member 10. The rotation of the rotating member 10 drives the pushing block 11 to move synchronously, so that the pushing block 11 is embedded in the slot 15 of the rack 12, and the rack 12 is pushed backward along the arc surface of the slot of the rack 12. The moving rack 12 drives the meshing driving wheel 13 to rotate, thereby the driving wheel 13 drives the meshing transmission wheel 14 to rotate synchronously, so that the transmission wheel 14 will engage the engaged The support plate 8 is driven downward to open, thereby expanding the entrance of the pipe. At the same time, the transmission wheel 14 is staggered with the support plate 8 up and down, and the bottom of the fixed block 7 is provided with an annular portion 9 that accommodates the downward rotation of the support plate 8, thereby ensuring that the support plate 8 will not be stuck with the edge of the fixed block 7 when rotating downward, resulting in an immobility. Secondly, the rack 12 drives the driving wheel 13 to rotate a limited distance. Therefore, the driving wheel 13 is a large gear with a larger diameter, while the transmission wheel 14 is a small gear with a smaller diameter, and the transmission ratio is four to one or more. Therefore, even if the rotation path of the large gear is short, the support plate 8 can be opened to a sufficient angle. By expanding the pipe entrance, under the same water flow rate, the water flow in the main body 1 enters the pipe better, and through the expanded pipe entrance, the water flow rate at the entrance is reduced, and the entry is also more stable. The water flow is also stable, so the overall flow is stable, and the impact force of the water flow will also be reduced, thereby reducing the damage caused by the impact force.

[0033] The driving device includes a bracket 21 arranged at the upper end of the fixed block 7, and the bracket 21 is rotatably connected to a driving wheel 22 engaged with the rotating member 10, and the outer ring of the rotating member 10 is provided with a tooth 24 engaged with the driving wheel, and the driving wheel 22 is provided with a rotating shaft 23 embedded in the bracket 21, and a torsion spring 25 is provided between the rotating shaft 23 and the bracket 21. A protrusion 26 is provided on the rotating shaft 23, and the bracket 21 is provided with a limiting groove 27 for accommodating the protrusion 26 to be embedded and limiting the rotation of the protrusion 26. The bottom of the limiting groove 27 is connected to an annular groove 28 for accommodating the rotation of the protrusion 26, and a rubber bag 29 for supporting and blocking the protrusion 26 from entering the annular groove 28 is provided in the annular groove 28, and the rubber bag 29 is filled with gas. The bracket 21 is slidably connected to an extrusion block 30, and a spring 31 is provided between the extrusion block 30 and the bracket 21. The bottom of the extrusion block 30 is provided with a plug-in 32 for inserting the rubber bag 29. The second driving wheel 22 and the rotating member 10 are arranged in an upper and lower offset manner. The elastic force of the torsion spring 25 is greater than the elastic force of the first spring 16 and the second spring 18. The elastic force of the third spring 31 is greater than the elastic force of the safety valve 6 spring. The spring 31 at the bottom of the squeeze block 30 is greater than the spring 31 at the rear end of the safety valve 6. As a result, the squeeze block 30 is squeezed downward after the water pressure increases, causing the squeeze block 30 to move downward to compress the spring 31 and drive the bottom plug-in 32 to move downward synchronously, so that the plug-in 32 is inserted into the rubber bag 29. The gas in the rubber bag 29 is discharged, and the supporting force disappears, canceling the support and obstruction of the protrusion 26. At this time, the protrusion 26, the rotating shaft 23 and the driving wheel 22 move downward by their own gravity, so that the protrusion 26 is freed from the restriction and obstruction of the limiting groove 1 27, and the protrusion 26 is embedded in the annular groove 28. The rotating shaft 23 is provided with a groove for accommodating the sliding of the torsion spring 25. As a result, the torsion spring 25 is freed from the restriction and release of the elastic force, and pushes the rotating shaft 23 to rotate, so that the rotating shaft 23 drives the driving wheel 22 and the protrusion 26 to rotate, driving When the driving wheel 22 moves downward, it will mesh with the teeth 1 24 of the outer ring of the rotating part 10. As a result, when the driving wheel 22 rotates, it will drive the rotating part 10 to rotate synchronously, so that the rotating part 10 drives the support plate 8 to rotate downward to open the expanded pipeline inlet. Finally, the elastic force of the torsion spring 25 can overcome the gravity of the rotating part 10 and the weight and elastic force of the structure that the rotating part 10 needs to drive, thereby ensuring complete driving and achieving the effect of automatic opening without manual adjustment. At the same time, the bracket 21 at the upper end of the main body 1 can be opened and directly disassembled and connected to the fixing block 7 and fixed by bolts and other objects. Secondly, the side of the bracket 21 can be opened to replace the rubber bag 29 to ensure that it can be used again. Because the safety valve 6 is damaged, the rubber bag 29 can be replaced when the safety valve 6 is repaired after use of the above device, and the rotating shaft 23 is manually pulled upward to reset, which is convenient for emergency use next time.

[0034] The valve plate 3 is provided with an extension 45, which is provided with a limit block 38 that is embedded in the rotating member 10. The rotating member 10 is provided with a limit groove 2 4 for accommodating the limit block 38. The fixed block 7 is slidably connected to a receiving piece 17 that abuts against and blocks the support plate 8. A spring 2 18 is provided between the receiving piece 17 and the fixed block 7 to push the receiving piece 17 outward. The receiving piece 17 is located at the lower end of the support plate 8. The receiving piece 17 is provided with a second locking groove 19. The rotating member 10 is provided with a blocking block 20 that is embedded in the second locking groove 19 and blocks the receiving piece 17 from moving backward. The surface of the blocking block 20 that abuts against the receiving piece 17 and pushes the receiving piece 17 to return to its original position is an arc surface. At the same time, the valve plate 3 is normally closed and fitted on the support plate 8, and when the rotating member 10 is not driven, the limit groove 2 4 on the rotating member 10 and the limit block 38 of the extension part 45 of the valve plate 3 are in a relative state. Therefore, the valve plate 3 moves downward, which will directly drive the limit block 38 to be embedded in the limit groove 2 4, thereby limiting the rotation of the rotating member 10, and avoiding the situation where the rotating member 10 is not restricted, the force of the valve plate 3 moving downward is too large to push the support plate 8 downward, and the pipe orifice is expanded, and the valve plate 3 cannot cover the pipe orifice, resulting in the internal pipe water backflowing out from the pipe. Secondly, the spare torsion member 33 is restricted by the limit block 38 on the extension part 45, and the situation of direct accidental touch from the outside is avoided. When the valve plate 3 is opened, the support plate 8 inside cannot be started, which plays a role of insurance. At the same time, after the valve plate 3 is lifted and the restriction on the rotating member 10 is released, when the rotating member 10 drives the support plate 8 to open, the rotation of the rotating member 10 will drive the blocking block 20 away from the receiving plate 17 and cancel the blocking of the receiving plate 17. In this way, the spring 18 at the rear end of the receiving plate 17 will push the receiving plate 17 to move back and cancel the restriction and blocking of the support plate 8. Under normal conditions, when the rotating member 10 rotates, the blocking block 20 first releases the restriction on the support, and then the pushing block 11 pushes the rack 12 to ensure that the support plate 8 can be driven to rotate. Conversely, the support plate 8 is reset first and then the receiving plate 17 is reset. In this way, the valve plate 3 is prevented from moving downward and squeezing, causing the support plate 8 to rotate downward under pressure, and the support plate 8 is prevented from accidentally opening. At the same time, if it is automatically opened, after the support plate 8 is expanded and the new rubber bag 29 is replaced after maintenance, the rotating member 10 and the support plate 8 can be manually reset by the twisting member 33.

[0035] The drainage device includes a drainage hole 1 37 provided through the fixed block 7 at the support plate 8, a drainage hole 2 provided at the fixed block 7 of the main body 1 and connected to the drainage hole 1 37, and an annular water storage part 39 is provided on the outside of the main body 1 to accommodate the inflow of water. At the same time, after the above-mentioned arrangement, when the support plate 8 is driven to rotate and open downward, the drainage hole 1 37 is freed from obstruction and closure and is directly exposed. Therefore, when water is injected into the main body 1 and the internal pressure relief valve is damaged, the water can be discharged from the drainage port 1, which serves as a backup pressure relief device for drainage. Through the connection between the drainage hole 1 37 and the drainage hole 2, the water can enter the water storage part 39. At the same time, the water storage part 39 is externally connected to a drainage pipe, so that the water flowing out of all the drainage holes 1 37 can be gathered in the water storage part 39, and at the same time, discharged through the drainage pipe to the outside through the water storage part 39, thereby diverting the water flow. The effect is to further reduce the flow rate of the pipeline, thereby playing a diversion role to reduce loss under the same water volume. The original energy loss at the bottom of the pipeline will be reduced in terms of its impact force, thereby reducing the damage inside the pipeline. The source of pressure relief and pressure reduction are achieved by releasing the fluid. It also has other functions such as eliminating the water hammer effect. Although the additional diversion cannot reduce the water pressure very well, it reduces the retention of internal water flow and reduces the flow by diversion. The pressure is reduced, which mainly slows down the impact and makes the water flow more stable, so as to avoid excessive impact on the pipeline and cause bursting. The risk of bursting is reduced by the above settings.

[0036] A torsion member 33 is provided on the outside of the main body 1 at the upper end of the fixed block 7. The torsion member 33 is provided with a rotating shaft 34, which extends through the main body 1 and into the interior of the main body 1. A second tooth 35 is provided on the upper surface of the rotating member 10, and the second tooth 35 is staggered with the second limiting groove 4. The rotating shaft 34 is provided with a rotating wheel 36 that engages with the second tooth 35 on the upper surface of the rotating member 10. By rotating the torsion member 33 on the outside of the main body 1, the rotating shaft 34 is driven to rotate synchronously. At the same time, the rotating shaft 34 drives the internal rotating wheel 36 to rotate synchronously. The rotating wheel 36 engages with the second tooth 35, driving the rotating member 10 to rotate synchronously and driving the support plate 8 to open. At the same time, the second limiting groove 4 is staggered with the second tooth 35. This ensures that as long as the valve plate 3 is not opened, even if the external torsion member 33 rotates, the rotating member 10 cannot be driven, thereby preventing the support plate 8 from being directly opened from the outside.

[0037] A sleeve 40 is slidably connected in the drainage hole 37 , and the sleeve 40 is connected to the support plate 8 via a connector 41 , and the connector 41 is deformable. The connector 41 is located at the rear end of the sleeve 40 and is provided with a scraper 42 for cleaning the drainage hole 37 . At the same time, when the support plate 8 is opened, it will pull the connecting piece 41 to move together and drive the sleeve 40 and the scraper 42 to move synchronously, so that the scraper 42 and the sleeve 40 can move along the inner wall of the drainage hole 37. Because the connecting piece 41 is soft and deformable, such as a rubber bone or a steel wire, it can pull the sleeve 40 and the scraper 42 to move when moving, and can also push the sleeve 40 and the scraper 42 to move when returning, so as to avoid being too soft to bend and unable to be pushed. The rubber bone or steel wire can ensure both pushing and bending. When the support plate 8 is opened, the sleeve 40 and the scraper 42 move, and the scraper 42 moves along the guide groove 44 and disengages from the drainage hole 37, canceling the closure of the drainage hole 37. At this time, water can enter along the drainage hole 37. At the same time, there are gaps on both sides of the sleeve 40 to accommodate water flow, so that water can pass through the drainage hole 37. The flow then flows along the gap through the kit 40 into the drainage hole 2, while there is no gap for the scraper 42, so that all the impurities in the hole can be pushed out by this movement. On the contrary, when resetting, because the scraper 42 and the kit 40 and the connecting member 41 are fixed and therefore will not rotate, when resetting, they are re-embedded into the drainage hole 1 37 along the guide groove 2 44, and the kit 40 moves along the guide groove 1 43 and resets. Therefore, the drainage hole 1 37 is opened during use. When the support plate 8 moves, it can both drain water and clean internal impurities to avoid blockage. After use, it will not be blocked and automatically cleaned, ensuring repeated use. The drainage hole 1 37 is provided with a guide groove 1 43 and a guide groove 2 44 for guiding the movement of the kit 40 and the scraper 42, and the guide groove 1 43 and the guide groove 2 44 are cross-shaped. The end of the drainage hole 1 37 close to the main body 1 accommodates the kit 40 to pass through. The guide groove 1 43 and the guide groove 2 44 can also be tilted to form an X shape. Whether it is a cross or an X, it is to ensure that the movement of the kit 40 and the scraper 42 is stable while avoiding the restriction of the two being staggered. Secondly, the kit 40 cannot be separated from the drainage hole 1 37, which can ensure that when the support plate 8 rotates and resets, the connecting member 41 and the scraper 42 can be driven by the kit 40 to continue moving along the drainage hole 1 37.

[0038] Finally, through the above arrangement, under normal use, if the water pressure is high, the torsion piece 33 can be opened manually to open the support plate 8, so that the pipe entrance is expanded, and the water flow can be diverted through the drain hole 37 to make the water flow stable and the impact force is reduced. If it does not need to be opened manually and is used normally, if the safety valve 6 is damaged and not checked in advance, then when the water pressure is too high and cannot be released during use, the spring 31 at the bottom of the squeezing block 30 will overcome the elastic force of the spring 31 through the pressure greater than the spring 31 at the bottom of the squeezing block 30, and the squeezing block 30 will be compressed, so that the plug 32 at the bottom of the squeezing block 30 will puncture the rubber bag 29, and at the same time, the exhaust drive supports and restricts the protrusion 26, and the protrusion 26 will be out of the restriction after it is out of the support. The positioning slot enters the annular groove 28, is released by the elastic force of the torsion spring 25, and the driving wheel 22 moves down and engages with the rotating member 10. At this time, the torsion spring 25 pushes to drive the rotating member 10 to rotate, thereby achieving the effect of automatic opening, automatically expanding the pipe mouth and opening the drainage hole 1 37, thereby diverting the flow while reducing the flow rate of the pipe mouth, making the water flow smooth. At the same time, through the misalignment of the driving wheel 22, it is ensured that when the driving wheel 22 is not engaged with the rotating member 10, the torsional member 33 can manually drive the rotating member 10 to rotate without being restricted by the driving wheel 22. At the same time, the opening of the support plate 8 drives the kit 40 and the scraper 42 to move, as well as the movement driven by the reset, which can achieve the effect of self-cleaning to avoid blockage.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A groove connection type fire pump coupler, comprising a main body (1), wherein the main body (1) is provided with a hand wheel, a valve stem (2) and a valve plate (3), wherein a support member is provided in the main body (1) and contacts the valve plate (3), wherein two interfaces (5) are provided on both sides of the main body (1), wherein a check valve is provided on each interface (5), wherein a safety valve (6) for pressure relief is provided in the middle of the main body (1), wherein a spring is provided inside the safety valve (6), and the opening and closing of the safety valve (6) is controlled by the spring elastic force, and wherein: The support member includes a fixed block (7) connected to the main body (1), a support plate (8) abutting against the valve plate (3) is rotatably connected to the fixed block (7), and a plurality of support plates (8) are distributed in an annular shape, a ring portion (9) for accommodating the support plate (8) to rotate downward is provided at the bottom of the fixed block (7), a rotating member (10) is rotatably connected to the fixed block (7), a pushing block (11) is provided at the bottom of the rotating member (10), a rack (12) is slidably connected to the fixed block (7), a driving wheel (13) meshing with the rack (12) is provided at the rear end of the fixed block (7) and located at the support plate (8), a transmission wheel (14) meshing with the driving wheel (13) is clamped at the rotation connection between the support plate (8) and the fixed block (7), and the transmission wheel (14) and the support plate (8) are staggered in the upper and lower positions, and a driving device for driving the rotating member (10) to rotate is provided on the fixed block (7) and the main body (1); The rack (12) is provided with a slot (15) for accommodating the push block (11) to be embedded, the contact surface between the push block (11) and the rack (12) is an arc surface, a spring (16) for pushing the rack (12) to return to its original position is provided between the rack (12) and the fixed block (7), the diameter of the driving wheel (13) is larger than the diameter of the transmission wheel (14), and a drainage device for drainage is provided on the fixed block (7); The driving device comprises a bracket (21) arranged at the upper end of the fixed block (7), a driving wheel (22) engaged with the rotating member (10) being rotatably connected to the bracket (21), a tooth (24) engaged with the driving wheel being provided on the outer ring of the rotating member (10), a rotating shaft (23) embedded in the bracket (21) being provided on the driving wheel (22), a torsion spring (25) being provided between the rotating shaft (23) and the bracket (21), a protrusion (26) being provided on the rotating shaft (23), and a retaining member (26) being provided on the bracket (21) to accommodate the protrusion (26) and to limit the protrusion. (26) is rotated in a limiting groove (27), the bottom of the limiting groove (27) is connected to an annular groove (28) for accommodating the rotation of the protrusion (26), a rubber bag (29) is provided in the annular groove (28) for supporting and blocking the protrusion (26) from entering the annular groove (28), and the rubber bag (29) is filled with gas, an extrusion block (30) is slidably connected to the bracket (21), a spring (31) is provided between the extrusion block (30) and the bracket (21), and a plug-in (32) for inserting the rubber bag (29) is provided at the bottom of the extrusion block (30).

2. A groove connection type fire pump adapter according to claim 1, characterized in that: The driving wheel 2 (22) and the rotating member (10) are arranged in an upper and lower offset manner. The elastic force of the torsion spring (25) is greater than the elastic force of the spring 1 (16) and the spring 2 (18). The elastic force of the spring 3 (31) is greater than the elastic force of the safety valve (6) spring.

3. The groove connection type fire pump adapter according to claim 1, characterized in that: The valve plate (3) is provided with an extension portion (45), the extension portion (45) is provided with a limit block (38) embedded in the rotating member (10), and the rotating member (10) is provided with a second limit groove (4) for accommodating the limit block (38) to be embedded.

4. The groove connection type fire pump adapter according to claim 1, characterized in that: A twisting member (33) is provided outside the main body (1) at the upper end of the fixed block (7), and a rotating shaft (34) is provided on the twisting member (33), and the rotating shaft (34) passes through the main body (1) and extends to the inside of the main body (1). A second tooth (35) is provided on the upper surface of the rotating member (10), and the second tooth (35) and the second limiting groove (4) are staggered in front and back. A rotating wheel (36) is provided on the rotating shaft (34) and is engaged with the second tooth (35) on the upper surface of the rotating member (10).

5. The groove connection type fire pump adapter according to claim 1, characterized in that: The drainage device comprises a drainage hole 1 (37) provided through the fixed block (7) at the support plate (8); a drainage hole 2 in communication with the drainage hole 1 (37) is provided on the main body (1) at the fixed block (7); and an annular water storage member (39) is provided on the outside of the main body (1) for accommodating water flow.

6. A groove-connected fire pump adapter according to claim 5, characterized in that: A sleeve (40) is slidably connected in the drainage hole (37), and the sleeve (40) is connected to the support plate (8) via a connector (41). The connector (41) is deformable, and the connector (41) is located at the rear end of the sleeve (40) and is provided with a scraper (42) for cleaning the drainage hole (37).

7. A groove-connected fire pump adapter according to claim 6, characterized in that: The drainage hole 1 (37) is provided with a guide groove 1 (43) and a guide groove 2 (44) for guiding the movement of the sleeve (40) and the scraper (42), and the guide groove 1 (43) and the guide groove 2 (44) are in a cross shape. The drainage hole 1 (37) is close to the end of the main body (1) to accommodate the sleeve (40) to pass through.

8. The groove connection type fire pump adapter according to claim 1, characterized in that: The fixed block (7) is slidably connected with a receiving piece (17) that abuts against the support plate (8) and blocks the support plate (8); a second spring (18) is provided between the receiving piece (17) and the fixed block (7) for pushing the receiving piece (17) to move outward, and the receiving piece (17) is located at the lower end of the support plate (8); a second card slot (19) is provided on the receiving piece (17); a blocking block (20) is provided on the rotating member (10) that is embedded in the second card slot (19) and blocks the receiving piece (17) from moving backward; and the surface of the blocking block (20) that abuts against the receiving piece (17) and pushes the receiving piece (17) to return to its original position is an arc surface.

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