Water delivery device capable of eliminating water hammer

Abstract

The utility model relates to a water hammer eliminating water delivery device which comprises a front water delivery pipe, a rear water delivery pipe, a valve, a three-way valve and a water hammer eliminator, the water hammer eliminator comprises an eliminating cylinder, an air injection pipe, an air injection valve, a pressure gauge, a piston, a first sealing ring and a first connecting flange, and a second sealing ring is arranged on the first connecting flange. A plurality of first connecting bolts are arranged on the first connecting flange on the outer side of the second sealing ring, a supporting limiting boss extending into an inner hole in the lower portion of the eliminating cylinder is arranged on the inner side of a top opening of the three-way valve, and a buffering rubber gasket is fixed to the top of the supporting limiting boss. The lower portion of the eliminating cylinder is open, the piston extends into the supporting limiting boss in the inner hole in the lower portion of the eliminating cylinder through the top of the three-way valve to be limited, the piston can be taken out to replace the first sealing ring after the eliminating cylinder is detached, the buffering rubber gasket is fixed on the supporting limiting boss, and therefore impact of the piston can be buffered. The piston is protected, the limiting boss is supported, and noise is reduced.

Description

Technical Field

[0001] The utility model relates to a water hammer eliminating water delivery device, belonging to the technical field of water delivery equipment. Background Art

[0002] The water pipeline is an important part of the transportation equipment. Valves are installed in the pipeline to control the on-off of the pipeline. When the valve is suddenly closed, the flow rate of the medium in the pipeline suddenly decreases, which will cause the medium in the pipeline to produce a reverse shock wave. This shock wave is water hammer. Water hammer causes great damage to pipelines and other equipment. Therefore, a water hammer eliminator is often installed in the upper part in front of the valve. However, the piston of the current water hammer eliminator is sealed and installed in the eliminator cylinder. When the sealing ring on the piston is severely worn, the entire eliminator needs to be replaced, which increases the cost. In addition, when the piston falls, it directly hits the lower limit platform, which is easy to cause damage and noise. Utility Model Content

[0003] The utility model provides a water hammer eliminating water delivery device, which solves the problem that the piston of the current water hammer eliminator is sealed and installed in the eliminator cylinder, when the sealing ring on the piston is seriously worn, the whole eliminator needs to be replaced, which increases the cost, and when the piston falls, it directly hits the lower limit platform, which is easy to cause damage and noise.

[0004] The utility model relates to a water hammer eliminating water delivery device, comprising a front water delivery pipe, a rear water delivery pipe and a valve connecting the two, the front water delivery pipe is provided with a three-way valve, the top opening of the three-way valve is fixed with a water hammer eliminator, the water hammer eliminator comprises an eliminator cylinder, the top of the eliminator cylinder is closed, an air injection pipe is fixed with the top of the eliminator cylinder, an air injection valve is provided on the air injection pipe, a pressure gauge is provided at the top opening of the air injection valve, a piston is provided in the eliminator cylinder, a sealing ring is provided on the outer wall of the piston, a connecting flange that matches with each other is provided on the outer side of the bottom of the eliminator cylinder and the outer side of the top opening of the three-way valve, a sealing ring is provided on the connecting flange, a plurality of connecting bolts are provided on the connecting flange outside the sealing ring, a supporting and limiting boss that extends into the inner hole of the lower part of the eliminator cylinder is provided on the inner side of the top opening of the three-way valve, and a buffer rubber gasket is fixed on the top of the supporting and limiting boss.

[0005] As a preferred embodiment, an annular sealing groove is provided on the outer wall of the piston, the sealing ring 1 is in the sealing groove, an annular extrusion groove is provided on the top of the sealing groove, an extrusion ring is provided in the extrusion groove, the extrusion ring is composed of two extrusion half rings, which is convenient for placing the extrusion ring from the sealing groove, and a plurality of stepped holes connected to the extrusion groove are evenly provided on the top of the piston. When water hammer occurs, the piston moves upward to compress the air on the upper part of the piston, so that the gas presses the extrusion ring to squeeze the sealing ring 1, and the sealing effect is better.

[0006] As a preferred embodiment, a turbulence cylinder is provided between the rear water supply pipe and the valve, and a left turbulence plate and a right turbulence plate are provided in the turbulence cylinder. Turbulence water holes are evenly provided on the left turbulence plate and the right turbulence plate. The diameter of the turbulence water holes on the left turbulence plate is larger than the diameter of the turbulence water holes on the right turbulence plate. This can eliminate the vortex generated in the water supply device, better prevent the pipeline from vibrating, and eliminate noise.

[0007] As a preferred embodiment, the outer side of the right end of the turbulence cylinder and the outer side of the left end of the rear water pipe are both provided with a connecting flange 2 that matches each other, a sealing ring 3 is provided on the connecting flange 2, and a plurality of connecting bolts 2 are provided on the connecting flange 2 outside the sealing ring 3. The outer side of the left end of the turbulence cylinder and the outer side of the right end of the valve are both provided with a connecting flange 3 that matches each other, a sealing ring 4 is provided on the connecting flange 3, and a plurality of connecting bolts 3 are provided on the connecting flange 3 outside the sealing ring 4.

[0008] As a preferred embodiment, a supporting groove 1 for supporting the left turbulence plate is provided on the inner wall of the left end of the turbulence cylinder, an annular pressing platform 1 for pressing the left turbulence plate is provided on the right end of the valve, a supporting groove 2 for supporting the right turbulence plate is provided on the inner wall of the right end of the turbulence cylinder, and an annular pressing platform 2 for pressing the right turbulence plate is provided on the left end of the rear water pipe, so that the turbulence cylinder can be easily disassembled and the left and right turbulence plates can be taken out for cleaning.

[0009] The utility model has the following beneficial effects:

[0010] The lower part of the eliminating cylinder is open, and the piston extends into the supporting and limiting boss in the lower inner hole of the eliminating cylinder through the top of the three-way valve for limiting. The piston can be taken out and the sealing ring can be replaced after disassembling the eliminating cylinder. A buffer rubber gasket is fixed on the supporting and limiting boss, which can buffer the impact of the piston, protect the piston and the supporting and limiting boss, and reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 for Figure 1 Schematic diagram of some structures;

[0013] Figure 3 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0014] In the figure: 1. front water pipe, 2. valve, 3. rear water pipe, 4. three-way valve, 5. support limit boss, 6. buffer rubber gasket, 7. piston, 8. elimination cylinder, 9. air injection pipe, 10. air injection valve, 11. pressure gauge, 12. extrusion ring, 13. sealing ring 1, 14. annular pressure platform 1, 15. left turbulence plate, 16. turbulence cylinder, 17. annular pressure platform 2, 18. right turbulence plate, 19. stepped hole. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with embodiments.

[0016] Embodiment 1, as Figures 1 to 3 As shown, the utility model is a water hammer eliminating water delivery device, comprising a front water delivery pipe 1, a rear water delivery pipe 3 and a valve 2 connecting the two, a three-way valve 4 is provided on the front water delivery pipe 1, a water hammer eliminator is fixed to the top opening of the three-way valve 4, the water hammer eliminator comprises an eliminating cylinder 8, the top of the eliminating cylinder 8 is closed, an air injection pipe 9 is fixed to the top of the eliminating cylinder 8, an air injection valve 10 is provided on the air injection pipe 9, a pressure gauge 11 is provided at the top opening of the air injection valve 10, a piston 7 is provided in the eliminating cylinder 8, a sealing ring 13 is provided on the outer wall of the piston 7, a connecting flange 1 that matches each other is provided on the outer side of the bottom of the eliminating cylinder 8 and the outer side of the top opening of the three-way valve 4, a sealing ring 2 is provided on the connecting flange 1, a plurality of connecting bolts 1 are provided on the connecting flange 1 outside the sealing ring 2, a supporting and limiting boss 5 extending into the inner hole of the lower part of the eliminating cylinder 8 is provided on the inner side of the top opening of the three-way valve 4, and a buffer rubber gasket 6 is fixed on the top of the supporting and limiting boss 5.

[0017] When delivering water, water enters from the front water pipe 1, and then passes through the valve 2 into the rear water pipe 3 for water delivery. When the valve 2 is closed, water hammer occurs at the front water pipe 1. At this time, the liquid will squeeze the piston 7 upward, and then press the piston 7 to move upward to offset the water hammer pressure. When it is necessary to replace the sealing ring 13, unscrew the connecting bolt 1, then take out the piston 7, and then replace it with a new sealing ring 13, and then reinstall the elimination tube 8, and inject pressurized gas into the upper part of the elimination tube 8 from the side air injection port of the air injection valve 10.

[0018] Embodiment 2, on the basis of embodiment 1, an annular sealing groove is provided on the outer wall of the piston 7, a sealing ring 13 is located in the sealing groove, an annular extrusion groove is provided on the top of the sealing groove, an extrusion ring 12 is provided in the extrusion groove, the extrusion ring 12 is composed of two extrusion half rings, the two extrusion half rings are installed in the sealing groove and then welded and fixed, the side wall of the extrusion ring 12 and the side wall of the extrusion groove are processed to form an airtight seal, and a plurality of stepped holes 19 connecting the extrusion grooves are evenly provided on the top of the piston 7.

[0019] A turbulence tube 16 is provided between the rear water delivery pipe 3 and the valve 2. A left turbulence plate 15 and a right turbulence plate 18 are provided inside the turbulence tube 16. Turbulence water holes are evenly provided on the left turbulence plate 15 and the right turbulence plate 18. The diameter of the turbulence water holes on the left turbulence plate 15 is larger than the diameter of the turbulence water holes on the right turbulence plate 18.

[0020] The right end outer side of the turbulence cylinder 16 and the left end outer side of the rear water delivery pipe 3 are both provided with mutually matching connecting flanges 2, a sealing ring 3 is provided on the connecting flange 2, and a plurality of connecting bolts 2 are provided on the connecting flange 2 outside the sealing ring 3. The left end outer side of the turbulence cylinder 16 and the right end outer side of the valve 2 are both provided with mutually matching connecting flanges 3, a sealing ring 4 is provided on the connecting flange 3, and a plurality of connecting bolts 3 are provided on the connecting flange 3 outside the sealing ring 4. A section of bellows may be provided on the rear water delivery pipe 3 or the turbulence cylinder 16.

[0021] The inner wall at the left end of the turbulence tube 16 is provided with a supporting groove 1 for supporting the left turbulence plate 15, the right end of the valve 2 is provided with an annular pressing platform 14 for pressing the left turbulence plate 15, the inner wall at the right end of the turbulence tube 16 is provided with a supporting groove 2 for supporting the right turbulence plate 18, and the left end of the rear water delivery pipe 3 is provided with an annular pressing platform 2 17 for pressing the right turbulence plate 18. When water enters the turbulence tube 16 from the valve 2, it will cause turbulence to the liquid. At this time, the liquid passing through will not rotate and will not generate eddy currents, thus eliminating the damage to the pipeline caused by eddy currents and achieving better silencing effect. When it is necessary to clean the left turbulence plate 15 and the right turbulence plate 18, then disassemble the second and third connecting bolts, remove the turbulence tube 16, the left turbulence plate 15 and the right turbulence plate 18 for cleaning.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0023] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. A water hammer elimination water delivery device, comprising a front water delivery pipe (1), a rear water delivery pipe (3) and a valve (2) connecting the two, the front water delivery pipe (1) is provided with a three-way valve (4), the top opening of the three-way valve (4) is fixed with a water hammer eliminator, characterized in that: The water hammer arrester comprises an arrester tube (8), the top of which is closed, an air injection pipe (9) is fixed to the top of the arrester tube (8), an air injection valve (10) is provided on the air injection pipe (9), a pressure gauge (11) is provided at the top opening of the air injection valve (10), a piston (7) is provided in the arrester tube (8), a sealing ring (13) is provided on the outer wall of the piston (7), a connecting flange (1) which matches each other is provided on the outer side of the bottom of the arrester tube (8) and the top opening of a three-way valve (4), a sealing ring (2) is provided on the connecting flange (1), a plurality of connecting bolts (1) are provided on the connecting flange (1) outside the sealing ring (2), a supporting and limiting boss (5) which extends into the inner hole at the bottom of the arrester tube (8) is provided on the inner side of the top opening of the three-way valve (4), and a buffer rubber gasket (6) is fixed on the top of the supporting and limiting boss (5).

2. A water hammer elimination water delivery device according to claim 1, characterized in that: An annular sealing groove is provided on the outer wall of the piston (7), a sealing ring (13) is located in the sealing groove, an annular extrusion groove is provided on the top of the sealing groove, an extrusion ring (12) is provided in the extrusion groove, the extrusion ring (12) is composed of two extrusion half rings, and a plurality of stepped holes (19) communicating with the extrusion grooves are evenly provided on the top of the piston (7).

3. A water hammer elimination water delivery device according to claim 1, characterized in that: A turbulence cylinder (16) is provided between the rear water delivery pipe (3) and the valve (2), a left turbulence plate (15) and a right turbulence plate (18) are provided in the turbulence cylinder (16), turbulence water holes are evenly provided on the left turbulence plate (15) and the right turbulence plate (18), and the diameter of the turbulence water holes on the left turbulence plate (15) is larger than the diameter of the turbulence water holes on the right turbulence plate (18).

4. A water hammer elimination water delivery device according to claim 3, characterized in that: The right end outer side of the turbulence cylinder (16) and the left end outer side of the rear water delivery pipe (3) are both provided with mutually matching connecting flanges 2, a sealing ring 3 is provided on the connecting flange 2, and a plurality of connecting bolts 2 are provided on the connecting flange 2 outside the sealing ring 3. The left end outer side of the turbulence cylinder (16) and the right end outer side of the valve (2) are both provided with mutually matching connecting flanges 3, a sealing ring 4 is provided on the connecting flange 3, and a plurality of connecting bolts 3 are provided on the connecting flange 3 outside the sealing ring 4.

5. A water hammer elimination water delivery device according to claim 4, characterized in that: A supporting groove 1 for supporting the left turbulence plate (15) is provided on the inner side wall at the left end of the turbulence cylinder (16); an annular pressing platform 1 (14) for pressing the left turbulence plate (15) is provided on the right end of the valve (2); a supporting groove 2 for supporting the right turbulence plate (18) is provided on the inner side wall at the right end of the turbulence cylinder (16); and an annular pressing platform 2 (17) for pressing the right turbulence plate (18) is provided on the left end of the rear water delivery pipe (3).

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