Quick assembly joint for water inlet pipe of fire pump

Abstract

The utility model provides a fire pump water inlet pipe quick assembly joint which comprises a fixing pipe arranged at the water inlet end of a fire pump and a water pipe end arranged at one end of a water pipe, a plurality of inserting plates are annularly arranged at the connecting end of the water pipe end and are annularly distributed at equal angles, inserting grooves in one-to-one correspondence with the inserting plates are formed in the fixing pipe, and the inserting plates are inserted into the inserting grooves. A guide arc edge extending in the circumferential direction of the fixing pipe is arranged between every two adjacent inserting grooves, the guide arc edges are arranged from high to low from one inserting groove to the next inserting groove, a fixing hole is formed in the wall of each inserting plate, and a fixing mechanism capable of being clamped in the fixing hole is arranged on the fixing pipe. When the water pipe end is connected with the fixing pipe, due to the fact that the probability that the inserting plate is directly aligned with the inserting groove is low, no matter where the inserting plate abuts against the guiding arc edge, the inserting plate only needs to abut against the guiding arc edge to apply force and rotate by a certain angle in the descending direction of the guiding arc edge till the inserting plate enters the inserting groove, the connecting speed of the inserting plate and the fixing pipe is high, and the butt joint time is greatly saved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting water pipe docking, in particular to a fire-fighting pump water inlet pipe quick assembly joint. Background Art

[0002] Fire pumps are mainly used for pressurized water supply in fire protection system pipelines and fire water supply in various occasions (fire hydrant fire extinguishing systems, automatic sprinkler fire extinguishing systems and water spray fire extinguishing systems, etc.). They are also suitable for various industrial and urban water supply and drainage, pressurized water supply in high-rise buildings, long-distance water supply, heating, bathrooms, boiler hot and cold water circulation, pressurized air conditioning and refrigeration system water supply and equipment matching, etc.

[0003] Currently available fire pumps on the market, such as one with Chinese patent publication number CN112377460B, include a pump body and a pipe interface. The pipe interface is located on the lower side of the outer surface of the pump body and is fixedly connected to the pump body in an integrated manner. A protective polished cover is provided on the outer surface of the pipe interface away from the pump body. A connecting mechanism is provided on the outer surface of the upper end of the pipe interface, and the protective polished cover is movably connected to the pipe interface.

[0004] However, for fire pumps such as the above, when connecting the pipe interface to the external water pipe, the connection holes on the interface need to be aligned with each other, and then connected by bolts or threads, which takes a long time to assemble, which will have a serious impact on the fire extinguishing efficiency. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the utility model provides a quick assembly joint for a fire pump water inlet pipe, which solves the problems raised in the above-mentioned background technology.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fire pump water inlet pipe quick assembly joint, comprising a fixed pipe arranged at the water inlet end of the fire pump and a water pipe end arranged at one end of the water pipe, a plurality of plug-ins are circumferentially arranged on the connecting end of the water pipe end, and the plurality of plug-ins are circumferentially distributed at equal angles, the fixed pipe is provided with slots corresponding to the plurality of plug-ins one by one, and a guide arc edge extending circumferentially along the fixed pipe is provided between two adjacent slots, and the height of the guide arc edge from one slot to the next slot is arranged from high to low, a fixing hole is provided on the wall of each plug-in plate, and a fixing mechanism that can be stuck in the fixing hole is provided on the fixed pipe.

[0009] Preferably, the number of the inserting plates, slots, and guide arc edges is at least four.

[0010] Preferably, the fixing mechanism includes a fixing column, a top plate and a spring. The fixing column is radially slidably adapted on the fixing tube, and the inner end corresponds to the fixing hole. The top plate is arranged on the outer end of the fixing column. The spring is sleeved outside the fixing column, and the two ends are respectively connected to the top plate and the outer wall of the fixing tube.

[0011] Preferably, the top plate is arc-shaped, and the arc of the top plate is concentric with the fixed tube.

[0012] Preferably, the fixing mechanism also includes a driving ring and a plurality of magnets arranged on the inner wall of the driving ring. The driving ring is slidably adapted on the fixing tube in an annular direction. The plurality of magnets correspond one-to-one with the top plate. The top plate is a magnetic body, and the magnetic poles of one side of the top plate corresponding to the magnet are opposite.

[0013] Preferably, sealing gaskets are provided on the inner walls of the slot and the guide arc edge.

[0014] (3) Beneficial effects

[0015] The utility model provides a quick assembly joint for a fire pump water inlet pipe. It has the following beneficial effects:

[0016] 1. The fire pump water inlet pipe quick assembly connector, when the water pipe end is connected to the fixed pipe, the probability of the plug-in plate directly aligning with the slot is low. However, no matter where the plug-in plate is against the guide arc edge, it is only necessary to apply a force against the guide arc edge and rotate a certain angle along the downward direction of the guide arc edge until the plug-in plate enters the slot. The two are connected quickly, which greatly saves docking time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the connection between the fixed pipe and the water pipe end of the utility model;

[0018] Figure 2 This is a schematic diagram of the water pipe port of the utility model;

[0019] Figure 3 This is a schematic diagram of a fixed nozzle of the utility model;

[0020] Figure 4 This is a cross-sectional view of the connection between the fixed pipe and the water pipe end of the utility model.

[0021] In the figure: 1 fixed pipe, 2 water pipe end, 3 plug plate, 4 slot, 5 guide arc edge, 6 fixing hole, 7 fixing column, 8 top plate, 9 spring, 10 drive ring, 11 magnet. DETAILED DESCRIPTION

[0022] The present invention provides a fire pump water inlet pipe quick assembly connector. Figure 1-4As shown, it includes a fixed pipe 1 arranged at the water inlet end of the fire pump and a water pipe end 2 arranged at one end of the water pipe. The fire pump and the water pipe are not shown in the figure.

[0023] Several inserts 3 are circumferentially arranged on the connecting end of the water pipe end 2. These inserts 3 are equidistantly distributed around the circumference and have an arc-shaped cross-section. Slots 4 are provided on the fixed pipe 1, corresponding one to each of the inserts 3. The cross-sections of the slots 4 are slightly larger than those of the inserts 3. Between adjacent slots 4, a guide arc 5 is provided, extending circumferentially along the fixed pipe 1. The height of the guide arc 5 decreases from one slot 4 to the next. The upper end of the guide arc 5 is flush with the end of the fixed pipe 1, and the lower end is higher than the bottom of the slot 4. A fixing hole 6 is provided in the wall of each insert 3. When the bottom end of the insert 3 contacts the bottom of the slot 4, the fixing hole 6 is located between the lower end of the guide arc 5 and the bottom of the slot 4.

[0024] The circumferential angle of each guide arc edge 5 is at least three times that of the slot 4 , that is, the sum of the circumferential angles of each group of guide arc edges 5 and the slot 4 is 90°, with the guide arc edges 5 accounting for 70° and the slot 4 accounting for 20°.

[0025] When the water pipe end 2 is connected to the fixed pipe 1, the probability of the plug-in plate 3 directly aligning with the slot 4 is low. However, no matter where the plug-in plate 3 is against the guide arc edge 5, it is only necessary to apply a force against the guide arc edge 5 and rotate a certain angle along the downward direction of the guide arc edge 5 until the plug-in plate 3 enters the slot 4. The connection speed between the two is fast, which greatly saves the docking time.

[0026] The fixing tube 1 is provided with a fixing mechanism that can be clamped in the fixing hole 6 .

[0027] The number of the inserting plates 3, the slots 4, and the guide arc edges 5 is at least four. In this embodiment, four groups are used.

[0028] Specifically, such as Figure 3 and Figure 4 As shown, the fixing mechanism includes a fixing column 7, a top plate 8, and a spring 9. The fixing column 7 is radially slidably adapted on the fixing tube 1, and its inner end corresponds to the fixing hole 6. The top plate 8 is arranged on the outer end of the fixing column 7. The spring 9 is sleeved outside the fixing column 7, and its two ends are respectively connected to the top plate 8 and the outer wall of the fixing tube 1. In the absence of external interference, under the action of the spring 9, one end of the fixing column 7 extends into the interior of the slot 4. When the insert plate 3 is inserted into the slot 4, the insert plate 3 will squeeze the fixing column 7 outward until the insert plate 3 is fully inserted into the slot 4. The fixing column 7 just corresponds to the fixing hole 6, and the fixing column 7 is pushed into the fixing hole 6 under the action of the spring 9. In order to facilitate the insert plate 3 to squeeze the fixing column 7, the side of the insert plate 3 that first contacts the fixing column 7 is an inclined surface.

[0029] The top plate 8 is arc-shaped, and the arc of the top plate 8 is concentric with the fixed pipe 1 .

[0030] The fixing mechanism also includes a drive ring 10 and a plurality of magnets 11 disposed on the inner wall of the drive ring 10. The drive ring 10 slides circumferentially onto the fixed tube 1. The plurality of magnets 11 correspond one-to-one with the top plate 8. The top plate 8 is a magnetic body, and the magnetic poles of the side of the top plate 8 corresponding to the magnets 11 are opposite. When the water pipe end 2 needs to be removed from the fixed tube 1, it is only necessary to rotate the drive ring 10 until the magnets 11 correspond to the top plate 8. The magnets 11 will attract the top plate 8, causing the fixing column 7 to disengage from the fixing hole 6, and the water pipe end 2 can be separated from the fixed tube 1. When the drive ring 10 rotates circumferentially until the magnets 11 disengage from the top plate 8, the top plate 8 and the fixing column 7 can be reset under the action of the spring 9.

[0031] In order to improve the sealing performance of the connection between the water pipe end 2 and the fixed pipe 1, sealing gaskets are provided on the inner walls of the slot 4 and the guide arc edge 5. When the plug-in plate 3 is inserted, the sealing gasket is squeezed to achieve a sealing effect.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick assembly joint for a fire pump water inlet pipe, comprising a fixed pipe (1) arranged at the water inlet end of the fire pump and a water pipe end (2) arranged at one end of the water pipe, characterized in that: A plurality of inserting plates (3) are circumferentially arranged on the connecting end of the water pipe end (2), and the plurality of inserting plates (3) are circumferentially distributed at equal angles. The fixed pipe (1) is provided with slots (4) corresponding to the plurality of inserting plates (3) one by one. A guide arc edge (5) extending circumferentially along the fixed pipe (1) is provided between two adjacent slots (4). The height of the guide arc edge (5) is arranged from high to low from one slot (4) to the next slot (4). A fixing hole (6) is provided on the wall of each inserting plate (3), and the fixed pipe (1) is provided with a fixing mechanism that can be clamped in the fixing hole (6).

2. A fire pump water inlet pipe quick assembly connector according to claim 1, characterized in that: The number of the inserting plates (3), slots (4), and guide arc edges (5) is at least four groups.

3. A fire pump water inlet pipe quick assembly connector according to claim 1, characterized in that: The fixing mechanism comprises a fixing column (7), a top plate (8) and a spring (9); the fixing column (7) is radially slidably adapted on the fixing tube (1), and the inner end thereof corresponds to the fixing hole (6); the top plate (8) is arranged on the outer end of the fixing column (7); the spring (9) is sleeved outside the fixing column (7), and the two ends thereof are respectively connected to the top plate (8) and the outer wall of the fixing tube (1).

4. A fire pump water inlet pipe quick assembly connector according to claim 3, characterized in that: The top plate (8) is in an arc shape, and the arc shape of the top plate (8) is concentric with the fixed pipe (1).

5. A fire pump water inlet pipe quick assembly connector according to claim 4, characterized in that: The fixing mechanism further comprises a driving ring (10) and a plurality of magnets (11) arranged on the inner wall of the driving ring (10); the driving ring (10) is circumferentially slidably adapted on the fixing tube (1); the plurality of magnets (11) correspond one-to-one with the top plate (8); the top plate (8) is a magnetic body; the magnetic poles of one side of the top plate (8) and the magnets (11) are opposite.

6. A fire pump water inlet pipe quick assembly connector according to claim 1, characterized in that: Sealing pads are provided on the inner walls of the slot (4) and the guide arc edge (5).

Images